J Jacobs Solutions Inc

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Unless the context otherwise requires:

•References herein to “Jacobs” are to Jacobs Solutions Inc. and its predecessors;

•References herein to the “Company”, “we”, “us” or “our” are to Jacobs Solutions Inc. and its consolidated subsidiaries; and

•References herein to the “Group” are to the combined economic interests and activities of the Company and the persons and entities holding noncontrolling interests in our consolidated subsidiaries.

On August 29, 2022, Jacobs Engineering Group Inc. ("JEGI"), the predecessor to Jacobs Solutions Inc., implemented a holding company structure, which resulted in Jacobs Solutions Inc. becoming the parent company of, and successor issuer to, JEGI (the "Holding Company Reorganization"). For purposes of this report, references to Jacobs and the "Company", "we", "us" or "our" or our management or business at any point prior to the Holding Company Implementation Date refer to JEGI, or JEGI and its consolidated subsidiaries as the predecessor to Jacobs Solutions Inc.

The accompanying consolidated financial statements and financial information included herein have been prepared pursuant to the interim period reporting requirements of Form 10-Q. Consequently, certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) have been condensed or omitted. Readers of this Quarterly Report on Form 10-Q should also read our consolidated financial statements and the notes thereto included in our Annual Report on Form 10-K for the fiscal year ended September 29, 2023 (“2023 Form 10-K”).

In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments (consisting of normal recurring adjustments) necessary for a fair presentation of our consolidated financial statements at December 29, 2023, and for the three months ended December 29, 2023.

Our interim results of operations are not necessarily indicative of the results to be expected for the full fiscal year.

On November 20, 2023, Jacobs entered into a definitive agreement to spin-off and combine our Critical Mission Solutions ("CMS") and portions of our Divergent Solutions business, including Cyber & Intelligence (the "Separated Businesses") with Amentum Parent Holdings LLC ("Amentum"), in a Reverse Morris Trust transaction intended to be tax-free to Jacobs’ shareholders for U.S. federal income tax purposes (hereinafter referred to as the “Separation Transaction”). The Separation Transaction, which is expected to close in fiscal year 2024, is subject to regulatory approvals and other customary closing conditions.

The preparation of financial statements in conformity with U.S. GAAP requires us to employ estimates and make assumptions that affect the reported amounts of certain assets and liabilities; the revenues and expenses reported for the periods covered by the financial statements; and certain amounts disclosed in these Notes to the Consolidated Financial Statements. Although such estimates and assumptions are based on management’s most recent assessment of the underlying facts and circumstances utilizing the most current information available and past experience, actual results could differ significantly from those estimates and assumptions. Our estimates, judgments and assumptions are evaluated periodically and adjusted accordingly.

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Certain amounts included in the accompanying consolidated financial statements are presented at fair value. Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants as of the date fair value is determined (the “measurement date”). When determining fair value, we consider the principal or most advantageous market in which we would transact, and we consider only those assumptions we believe a typical market participant would consider when pricing an asset or liability. In measuring fair value, we use the following inputs in the order of priority indicated:

Level 1 - Quoted prices in active markets for identical assets or liabilities.

Level 2 - Observable inputs other than quoted prices in active markets included in Level 1, such as (i) quoted prices for similar assets or liabilities; (ii) quoted prices in markets that have insufficient volume or infrequent transactions (e.g., less active markets); and (iii) model-driven valuations in which all significant inputs are observable or can be derived principally from, or corroborated with, observable market data for substantially the full term of the asset or liability.

Level 3 - Unobservable inputs to the valuation methodology that are significant to the fair value measurement.

Please refer to Note 2- Significant Accounting Policies of Notes to Consolidated Financial Statements included in our 2023 Form 10-K for a more complete discussion of the various items within the consolidated financial statements measured at fair value and the methods used to determine fair value. Please also refer to Note 17- Commitments and Contingencies and Derivative Financial Instruments for discussion regarding the Company's derivative instruments.

The net carrying amounts of cash and cash equivalents, trade receivables and payables and short-term debt approximate fair value due to the short-term nature of these instruments. See Note 12- Borrowings for a discussion of the fair value of long-term debt.

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ASU 2023-09, Income Taxes, (Topic 740): Improvements to Income Tax Disclosures, provides qualitative and quantitative updates to the Company's effective income tax rate reconciliation and income taxes paid disclosures, among others, in order to enhance the transparency of income tax disclosures, including consistent categories and greater disaggregation of information in the rate reconciliation and disaggregation by jurisdiction of income taxes paid. The amendments in ASU 2023-09 are effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments should be applied prospectively; however, retrospective application is also permitted. ASU 2023-09 will be effective in the Company's annual fiscal 2026 period. The Company has identified and is implementing changes to processes and internal controls to meet the standard’s updated reporting and disclosure requirements.

ASU 2023-07, Segment Reporting, (Topic 280): Improvements to Reportable Segment Disclosures, requires disclosure of significant segment expenses that are regularly provided to the chief operating decision maker (“CODM”) and included within each reported measure of segment profit or loss, an amount and description of its composition for other segment items to reconcile to segment profit or loss, and the title and position of the entity’s CODM. The amendments in this update also expand the interim segment disclosure requirements. ASU 2023-07 is effective for annual periods beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted and the amendments in this update are required to be applied on a retrospective basis. The Company is evaluating the impact of this guidance on its consolidated financial statements and related disclosures.

ASU 2023-06, Disclosure Improvements: Amendments - Codification Amendments in Response to the Disclosure Update and Simplification Initiative of the Securities and Exchange Commission ("SEC"). The Financial Accounting Standards Board issued the standard to introduce changes to US GAAP that originate in either SEC Regulation S-X or S-K, which are rules about the form and content of financial reports filed with the SEC. The provisions of the standard are contingent upon instances where the SEC removes the related disclosure provisions from Regulation S-X and S-K. The Company does not expect that the application of this standard will have a material impact on our consolidated financial statements and related disclosures.

Disaggregation of Revenues

Our revenues are principally derived from contracts to provide a diverse range of technical, professional, and construction services to a large number of industrial, commercial, and governmental clients. We provide a broad range of engineering, design, and architectural services; construction and construction management services; operations and maintenance services; and technical, digital, process, scientific and systems consulting services. We provide our services through offices and subsidiaries located primarily in North America, Europe, the Middle East, India, Australia, Africa, and Asia. We provide our services under cost-reimbursable and fixed-price contracts. Our contracts are with many different customers in numerous industries. Refer to Note 18- Segment Information for additional information on how we disaggregate our revenues by reportable segment.

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The following table further disaggregates our revenue by geographic area for the three months ended December 29, 2023 and December 30, 2022 (in thousands):

			Three Months Ended
			December 29, 2023						December 30, 2022
Revenues:
United States			$	2,798,055					$	2,536,114
Europe			925,197						854,734
Canada			63,375						61,829
Asia			30,940						34,824
India			35,743						40,344
Australia and New Zealand			173,771						161,040
Middle East and Africa			132,144						109,783
Total			$	4,159,225					$	3,798,668

Contract Liabilities

Contract liabilities represent amounts billed to clients in excess of revenue recognized to date. Revenue recognized for the three months ended December 29, 2023 that was previously included in the contract liability balance on September 29, 2023 was $369.6 million. Revenue recognized for the three months ended December 30, 2022 that was included in the contract liability balance on September 30, 2022 was $330.3 million.

Remaining Performance Obligation

The Company’s remaining performance obligations as of December 29, 2023 represent a measure of the total dollar value of work to be performed on contracts awarded and in progress. The Company had approximately $17.7 billion in remaining performance obligations as of December 29, 2023. The Company expects to recognize approximately 56% of its remaining performance obligations into revenue within the next twelve months and the remaining 44% thereafter. The majority of the remaining performance obligations after the first twelve months are expected to be recognized over a four year period.

Although our remaining performance obligations reflect business volumes that are considered to be firm, normal business activities including scope adjustments, deferrals or cancellations may occur that impact volume or expected timing of their recognition. Remaining performance obligations are adjusted to reflect any known project cancellations, revisions to project scope and cost, foreign currency exchange fluctuations and project deferrals, as appropriate.

Basic and diluted earnings per share (“EPS”) are computed using the two-class method, which is an earnings allocation method that determines EPS for common shares and participating securities. The undistributed earnings are allocated between common shares and participating securities as if all earnings had been distributed during the period. Participating securities and common shares have equal rights to undistributed earnings. Net earnings used for the purpose of determining basic and diluted EPS is determined by taking net earnings, less earnings available to participating securities and the preferred redeemable noncontrolling interests redemption value adjustment associated with the PA Consulting transaction.

The following table reconciles the denominator used to compute basic EPS to the denominator used to compute diluted EPS for the three months ended December 29, 2023 and December 30, 2022 (in thousands):

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			Three Months Ended
			December 29, 2023						December 30, 2022
Numerator for Basic and Diluted EPS:
Net earnings attributable to Jacobs from continuing operations			$	172,184					$	136,355
Preferred Redeemable Noncontrolling interests redemption value adjustment (See Note 15- PA Consulting Redeemable Noncontrolling Interests)			1,766						—
Net earnings from continuing operations allocated to common stock for EPS calculation			$	173,950					$	136,355
Net loss from discontinued operations allocated to common stock for EPS calculation			$	(574)					$	(708)
Net earnings allocated to common stock for EPS calculation			$	173,376					$	135,647
Denominator for Basic and Diluted EPS:
Shares used for calculating basic EPS attributable to common stock			126,105						126,824
Effect of dilutive securities:
Stock compensation plans			708						672
Shares used for calculating diluted EPS attributable to common stock			126,813						127,496
Net Earnings Per Share:
Basic Net Earnings from Continuing Operations Per Share			$	1.38					$	1.08
Basic Net Loss from Discontinued Operations Per Share			$	—					$	(0.01)
Basic Earnings Per Share			$	1.37					$	1.07
Diluted Net Earnings from Continuing Operations Per Share			$	1.37					$	1.07
Diluted Net Loss from Discontinued Operations Per Share			$	—					$	(0.01)
Diluted Earnings Per Share			$	1.37					$	1.06

Note: Per share amounts may not add due to rounding.

Share Repurchases

On January 16, 2020, the Company's Board of Directors authorized a share repurchase program of up to $1.0 billion of the Company's common stock (the "2020 Repurchase Authorization"). The 2020 Repurchase Authorization expired on January 15, 2023. On January 25, 2023, the Company's Board of Directors authorized an incremental share repurchase program of up to $1.0 billion of the Company's common stock, to expire on January 25, 2026 (the "2023 Repurchase Authorization"). At December 29, 2023, the Company has $774.8 million remaining under the 2023 Repurchase Authorization.

The following table summarizes repurchase activity under the 2023 Repurchase Authorization through the first fiscal quarter of 2024:

Amount Authorized (2023 Repurchase Authorization)						Average Price Per Share (1)						Total Shares Retired						Shares Repurchased
$1,000,000,000						$126.80						788,758						788,758

(1)Includes commissions paid and calculated at the average price per share

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Our share repurchase program does not obligate the Company to purchase any shares. Share repurchases may be executed through various means including, without limitation, accelerated share repurchases, open market transactions, privately negotiated transactions, purchases pursuant to Rule 10b5-1 plans or otherwise. The authorization for the share repurchase programs may be terminated, increased or decreased by the Company’s Board of Directors in its discretion at any time. The timing, amount and manner of share repurchases may depend upon market conditions and economic circumstances, availability of investment opportunities, the availability and costs of financing, currency fluctuations, the market price of the Company's common stock, other uses of capital and other factors.

Dividends

On January 25, 2024, the Company’s Board of Directors declared a quarterly dividend of $0.29 per share of the Company’s common stock to be paid on March 22, 2024, to shareholders of record on the close of business on February 23, 2024. Future dividend declarations are subject to review and approval by the Company’s Board of Directors. Dividends paid through the first fiscal quarter of 2024 and the preceding fiscal year are as follows:

Declaration Date

Record Date

Payment Date

Cash Amount (per share)

September 28, 2023

October 27, 2023

November 9, 2023

$0.26

July 6, 2023

July 28, 2023

August 25, 2023

$0.26

April 27, 2023

May 26, 2023

June 23, 2023

$0.26

January 25, 2023

February 24, 2023

March 24, 2023

$0.26

September 15, 2022

September 30, 2022

October 28, 2022

$0.23

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The carrying value of goodwill appearing in the accompanying Consolidated Balance Sheets at December 29, 2023 and September 29, 2023 was as follows (in thousands):

			Critical Mission Solutions						People & Places Solutions						Divergent Solutions						PA Consulting						Total
Balance September 29, 2023			$	2,244,985					$	3,208,193					$	595,712					$	1,294,636					$	7,343,526
Foreign currency translation and other			6,530						8,954						1,733						60,655						77,872
Balance December 29, 2023			$	2,251,515					$	3,217,147					$	597,445					$	1,355,291					$	7,421,398

The following table provides certain information related to the Company’s acquired intangibles in the accompanying Consolidated Balance Sheets at December 29, 2023 and September 29, 2023 (in thousands):

			Customer Relationships, Contracts and Backlog												Developed Technology						Trade Names																								Total
Balance September 29, 2023			$	1,022,401											$	74,791					$	174,751																							$	1,271,943
Amortization			(44,602)												(3,971)						(2,546)																								(51,119)
Foreign currency translation and other			25,655												244						21,606																								47,505
Balance December 29, 2023			$	1,003,454											$	71,064					$	193,811																							$	1,268,329

The following table presents estimated amortization expense of intangible assets for the remainder of fiscal 2024 and for the succeeding years.

Fiscal Year						(in millions)
2024						$	158.5
2025						211.0
2026						187.8
2027						155.3
2028						144.4
Thereafter						411.3
Total						$	1,268.3

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The following table presents the components of receivables and contract assets appearing in the accompanying Consolidated Balance Sheets at December 29, 2023 and September 29, 2023, as well as certain other related information (in thousands):

			December 29, 2023						September 29, 2023
Components of receivables and contract assets:
Amounts billed, net			$	1,546,936					$	1,457,334
Unbilled receivables and other			1,443,568						1,442,486
Contract assets			686,004						658,986
Total receivables and contract assets, net			$	3,676,508					$	3,558,806
Other information about receivables:
Amounts due from the United States federal government, included above, net of contract liabilities			$	789,949					$	802,566

Amounts billed, net consist of amounts invoiced to clients in accordance with the terms of our client contracts and are shown net of an allowance for doubtful accounts. We anticipate that substantially all of such billed amounts will be collected over the next twelve months.

Unbilled receivables and other, which represent an unconditional right to payment subject only to the passage of time, are reclassified to amounts billed when they are billed under the terms of the contract. We anticipate that substantially all of such unbilled amounts will be billed and collected over the next twelve months.

Contract assets represent unbilled amounts where the right to payment is subject to more than merely the passage of time and includes performance-based incentives and services that have been provided in advance of agreed contractual milestones. Contract assets are transferred to unbilled receivables when the right to consideration becomes unconditional and are transferred to amounts billed upon invoicing.

The following table presents the Company's roll forward of accumulated other comprehensive income (loss) after-tax as of December 29, 2023 (in thousands):

			Change in Net Pension Obligation						Foreign Currency Translation Adjustment (1)						Gain/(Loss) on Cash Flow Hedges (2)						Total
Balance at September 29, 2023			$	(325,692)					$	(635,937)					$	103,675					$	(857,954)
Other comprehensive (loss) income			(11,215)						108,048						(10,785)						86,048
Reclassifications from accumulated other comprehensive income (loss)			—						—						(9,685)						(9,685)
Balance at December 29, 2023			$	(336,907)					$	(527,889)					$	83,205					$	(781,591)

(1) Included in the overall foreign currency translation adjustment for the three months ended December 29, 2023 and December 30, 2022 are $(37.7) million and $(74.9) million, respectively in unrealized gains (losses) on long-term foreign currency denominated intercompany loans not anticipated to be settled in the foreseeable future.

(2) Included in the Company’s cumulative net unrealized gains from interest rate and cross currency swaps recorded in accumulated other comprehensive income as of December 29, 2023 were approximately $19.1 million in unrealized gains, net of taxes, which are expected to be realized in earnings during the twelve months subsequent to December 29, 2023.

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The Company’s effective tax rates from continuing operations for the three months ended December 29, 2023 and December 30, 2022 were (9.8)% and 25.4%, respectively. The most significant item contributing to the difference between the statutory U.S. federal corporate tax rate of 21.0% and the Company's effective tax rate for the three-month period ended December 29, 2023 relates to a discrete event associated with the election to treat an Australian subsidiary as a corporation versus a partnership for U.S. tax purposes. The election resulted in the derecognition of a deferred tax liability, resulting in a discrete income tax benefit of $61.6 million as the Company asserts that a component of the investment will be indefinitely reinvested. This benefit was partly offset by U.S. state income tax expense of $3.2 million and U.S. tax on foreign earnings of $3.2 million. These expense items are expected to have a continuing impact on the Company's effective tax rate for the remainder of the fiscal year.                  The most significant items contributing to the difference between the statutory U.S. federal corporate tax rate of 21.0% and the Company's effective tax rate for the three months ended December 30, 2022, were U.S. state income tax expense of $4.6 million and U.S. tax on foreign earnings of $3.6 million.
The amount of income taxes the Company pays is subject to ongoing audits by tax jurisdictions around the world. In the normal course of business, the Company is subject to examination by tax authorities throughout the world, including such major jurisdictions as Australia, Canada, India, the Netherlands, the United Kingdom and the United States. Our estimate of the potential outcome of any uncertain tax issue is subject to our assessment of the relevant risks, facts, and circumstances existing at the time. The Company believes that it has adequately provided for reasonably foreseeable outcomes related to these matters. However, future results may include favorable or unfavorable adjustments to our estimated tax liabilities in the period the assessments are made or resolved, which may impact our effective tax rate.

For the Company's consolidated variable interest entities ("VIE") joint ventures, the carrying value of assets and liabilities was $409.8 million and $256.4 million, respectively, as of December 29, 2023 and $424.2 million and $279.8 million, respectively, as of September 29, 2023. There are no consolidated VIEs that have debt or credit facilities.

For the Company's proportionate consolidated VIEs, the carrying value of assets and liabilities was $146.1 million and $138.2 million, respectively, as of December 29, 2023, and $132.0 million and $128.9 million, respectively, as of September 29, 2023.

The carrying values of our investments in equity method joint ventures in the Consolidated Balance Sheets (reported in Other Noncurrent Assets: Miscellaneous) as of December 29, 2023 and September 29, 2023 were $48.1 million and $49.6 million, respectively. Additionally, income from equity method joint ventures (reported in Revenue) was $10.3 million and $10.0 million, respectively, during the three months ended December 29, 2023 and December 30, 2022. As of December 29, 2023, the Company's equity method investment carrying values do not include material amounts exceeding their share of the respective joint ventures' reported net assets.

Accounts receivable from unconsolidated joint ventures accounted for under the equity method was $12.0 million and $16.1 million as of December 29, 2023 and September 29, 2023, respectively.

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At December 29, 2023 and September 29, 2023, long-term debt consisted of the following (principal amounts in thousands):

			Interest Rate						Maturity						December 29, 2023						September 29, 2023
Revolving Credit Facility			Benchmark + applicable margin (1) (2)						February 2028						$	—					$	10,000
2021 Term Loan Facility - USD Portion			Benchmark + applicable margin (1) (3)						February 2026						120,000						120,000
2021 Term Loan Facility - GBP Portion			Benchmark + applicable margin (1) (3)						September 2025						829,075						794,170
2020 Term Loan Facility			Benchmark + applicable margin (1) (4)						March 2025 (6)						852,210						854,246
Fixed-rate:
5.9% Bonds, due 2033			5.9% (5)						March 2033						500,000						500,000
6.35% Bonds, due 2028			6.35%						August 2028						600,000						600,000
Less: Current Portion (6)															(52,444)						(51,773)
Less: Deferred Financing Fees															(13,961)						(13,172)
Total Long-term debt, net															$	2,834,880					$	2,813,471

(1)During the year ended September 29, 2023, the aggregate principal amounts denominated in U.S. dollars under the Revolving Credit Facility, the 2021 Term Loan Facility and the 2020 Term Loan Facility (each as defined below) transitioned from underlying LIBOR benchmarked rates to the Term Secured Overnight Financing Rate ("SOFR"). During fiscal 2022, the aggregate principal amounts denominated in British pounds under the Revolving Credit Facility, 2021 Term Loan Facility and 2020 Term Loan Facility transitioned from underlying LIBOR benchmarked rates to Sterling Overnight Index Average ("SONIA") rates.

(2)Depending on the Company’s Consolidated Leverage Ratio or Debt Rating (each as defined in the Revolving Credit Facility (defined below)), U.S. dollar denominated borrowings under the Revolving Credit Facility bear interest at either a SOFR rate plus a margin of between 0.975% and 1.725% or a base rate plus a margin of between 0% and 0.625%. The applicable SOFR rates, or LIBOR rate for the prior fiscal year end, including applicable margins at December 29, 2023 and September 29, 2023 were approximately 6.70% and 8.75%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.908% and 1.658%. There were no amounts drawn in British pounds as of December 29, 2023.

(3)Depending on the Company’s Consolidated Leverage Ratio or Debt Rating (each as defined in the Amended and Restated Term Loan Agreement (defined below)), U.S. dollar denominated borrowings under the 2021 Term Loan Facility bear interest at either a SOFR rate plus a margin of between 0.975% and 1.725% or a base rate plus a margin of between 0% and 0.625%. The applicable SOFR, or LIBOR rate for the prior fiscal year end, including applicable margins for borrowings denominated in U.S. dollars at December 29, 2023 and September 29, 2023 was approximately 6.70% and 6.68%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.908% and 1.658%, which was approximately 6.47% and 6.47% at December 29, 2023 and September 29, 2023, respectively.

(4)Depending on the Company’s Consolidated Leverage Ratio or Debt Rating (each as defined in the 2020 Term Loan Agreement), U.S. dollar denominated borrowings under the 2020 Term Loan Facility bear interest at either a SOFR rate plus a margin of between 0.975% and 1.725% or a base rate plus a margin of between 0% and 0.625%. The applicable SOFR, or LIBOR rate for the prior fiscal year end, including applicable margins for borrowings denominated in U.S. dollars at December 29, 2023 and September 29, 2023 were approximately 6.70% and 6.68%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.908% and 1.658%, which was approximately 6.47% and 6.47% at December 29, 2023 and September 29, 2023, respectively.

(5)From and including September 1, 2028 (the “First Step Up Date”), the interest rate payable on the 5.90% Bonds (as defined below) will be increased by an additional 12.5 basis points to 6.025% per annum (the “First Step Up Interest Rate”) unless the Company notifies the Trustee (as defined below) on or before the date that is 15 days prior to the First Step Up Date that the Percentage of Gender Diversity Performance Target (as defined in the First Supplemental Indenture (as defined below)) has been satisfied and receives a related assurance letter verifying such compliance. From and including September 1, 2030 (the “Second Step Up Date”), the interest rate payable on the 5.90% Bonds will be increased by 12.5 basis points to (x) 6.150% per annum if the First Step Up Interest Rate was in effect immediately prior to the Second Step Up Date or (y) 6.025% per annum if the initial interest rate was in effect immediately prior to the Second Step Up Date, unless the Company notifies the Trustee on or before the date that is 15 days prior to the Second Step Up Date that the GHG Emissions Performance Target (as defined in the First Supplemental Indenture) has been satisfied and receives a related assurance letter verifying such compliance.

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(6)The current portion of long-term debt is comprised primarily of the 2020 Term Loan Facility quarterly principal repayments of 1.25%, or $9.125 million and £3.125 million, of the aggregate initial principal amount borrowed.

Revolving Credit Facility and Term Loans

The Company and certain of its subsidiaries maintain a sustainability-linked $2.25 billion unsecured revolving credit facility (the “Revolving Credit Facility”) established under a third amended and restated credit agreement, dated February 6, 2023 (the "Revolving Credit Agreement"), among Jacobs and certain of its subsidiaries as borrowers and a syndicate of U.S. and international banks and financial institutions. The credit extensions under the Revolving Credit Facility can be funded in U.S dollars, British Sterling, Euros, Canadian dollars, Australian dollars, Swedish Krona, Singapore dollars and other agreed upon alternative currencies. The Revolving Credit Agreement also provides for a financial letter of credit sub facility of $400.0 million, permits performance letters of credit, and provides for a $100.0 million sub facility for swing line loans. Letters of credit are subject to fees based on the Company’s Consolidated Leverage Ratio and Debt Rating, whichever is more favorable to the Company.

The Revolving Credit Agreement amended and restated the second amended and restated credit agreement dated March 27, 2019, by and among JEGI and certain of its subsidiaries and a syndicate of banks and financial institutions, in order to, among other things, (a) extend the maturity date of the Revolving Credit Facility to February 6, 2028, (b) replace and adjust interest rates based on market conditions and incorporate a sustainability-linked pricing adjustment, (c) revise the commitment fee on the unused portion of the facility to a range of 0.10% to 0.25% depending on the higher of the pricing level associated with JEGI's Debt Rating or the Consolidated Leverage Ratio, (d) increase the Consolidated Leverage Ratio financial covenant to 3.50:1.00 (subject to temporary increases to 4.00:1.00 following the closing of certain material acquisitions), (e) eliminate the net worth financial covenant and (f) add the Company as a guarantor of the obligations of JEGI and its subsidiaries under the Revolving Credit Agreement.

The Company and JEGI maintain an unsecured delayed draft term loan facility (the “2021 Term Loan Facility”) established under an amended and restated term loan agreement dated February 6, 2023 (the "Amended and Restated Term Loan Agreement"), by and among the Company and JEGI and a syndicate of banks and financial institutions. JEGI borrowed $200.0 million and £650.0 million of term loans under the 2021 Term Loan Facility and the proceeds of such term loans were used primarily to fund JEGI's investment in PA Consulting. The Amended and Restated Term Loan Agreement amended and restated the term loan agreement dated January 15, 2021, by and among JEGI and a syndicate of U.S. banks and financial institutions to, among other things: (a) extend the maturity date of the U.S. dollar term loan to February 6, 2026 and the British sterling term loan to September 1, 2025, (b) replace and adjust interest rates based on market conditions and incorporate a sustainability-linked pricing adjustment, (c) increase the Consolidated Leverage Ratio financial covenant to 3.50:1.00 (subject to temporary increases to 4.00:1.00 following the closing of certain material acquisitions), (d) eliminate the net worth financial covenant, and (e) add Jacobs as a guarantor of the obligations of JEGI under the Amended and Restated Term Loan Agreement.

During the fourth quarter of fiscal 2023, the Company repaid $80.0 million of the USD portion of the 2021 Term Loan Facility.

On March 25, 2020, JEGI and Jacobs U.K., a wholly owned subsidiary of JEGI, entered into a term loan agreement (the "2020 Term Loan Agreement") with a syndicate of banks and financial institutions, which provides for an unsecured term loan facility (the “2020 Term Loan Facility”). Under the 2020 Term Loan Facility, JEGI borrowed an aggregate principal amount of $730.0 million and Jacobs U.K. borrowed an aggregate principal amount of £250.0 million. The proceeds of the term loans were used to repay an existing term loan with a maturity date of June 2020 and for general corporate purposes. On February 6, 2023, the 2020 Term Loan Agreement was amended to, among other things: (a) replace and adjust interest rates based on market conditions and incorporate a sustainability-linked pricing adjustment, (b) increase the Consolidated Leverage Ratio financial covenant to 3.50:1.00 (subject to temporary increases to 4.00:1.00 following the closing of certain material acquisitions), (c) eliminate the net worth financial covenant, and (d) add Jacobs as a guarantor of the obligations of JEGI and Jacobs U.K.

The 2020 Term Loan Facility and the 2021 Term Loan Facility are together referred to as the "Term Loan Facilities".

In the fourth quarter of fiscal 2022, the Revolving Credit Facility and Term Loan Facilities were amended to permit the Holding Company Reorganization.

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On December 20, 2023, the Revolving Credit Facility and Term Loan Facilities were amended to fix the point in time at which certain compliance thresholds are tested in connection with the Separation Transaction.

We were in compliance with the covenants under the Revolving Credit Facility and Term Loan Facilities at December 29, 2023.

5.90% Bonds, due 2033

On February 16, 2023, JEGI completed an offering of $500 million aggregate principal amount of 5.90% Bonds due 2033 (the “5.90% Bonds”). The 5.90% Bonds are fully and unconditionally guaranteed by the Company (the “5.90% Bonds Guarantee”). The 5.90% Bonds and the 5.90% Bonds Guarantee were offered pursuant to a prospectus supplement, dated February 13, 2023, to the prospectus dated February 6, 2023, that forms a part of the Company's and JEGI’s automatic shelf registration statement on Form S-3ASR previously filed with the SEC, and were issued pursuant to an Indenture, dated as of February 16, 2023, between JEGI, as issuer, the Company, as guarantor, and U.S. Bank Trust Company, National Association, as trustee (the “Trustee”), as amended and supplemented by the First Supplemental Indenture, dated as of February 16, 2023 (the “First Supplemental Indenture”). Interest on the 5.90% Bonds is payable semi-annually in arrears on each March 1 and September 1, commencing on September 1, 2023, until maturity. The 5.90% Bonds bear interest at 5.90% per annum, subject to adjustments as discussed in note (5) to the table above.

Prior to December 1, 2032 (the “5.90% Bonds Par Call Date”), JEGI may redeem the 5.90% Bonds at its option, in whole or in part, at any time and from time to time, at the redemption price calculated by JEGI (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of: (1) (a) the sum of the present values of the remaining scheduled payments of principal and interest on the 5.90% Bonds being redeemed, assuming that such 5.90% Bonds matured on the 5.90% Bonds Par Call Date, discounted to the redemption date on a semiannual basis (assuming a 360-day year of twelve 30-day months), at the Treasury Rate (as defined in the First Supplemental Indenture) plus 35 basis points, less (b) interest accrued to the redemption date, and (2) 100% of the principal amount of such 5.90% Bonds to be redeemed, plus, in either case, accrued and unpaid interest on the 5.90% Bonds, if any, to, but excluding, the redemption date. At any time and from time to time on or after the 5.90% Bonds Par Call Date, JEGI may redeem the 5.90% Bonds, at its option, in whole or in part, at a redemption price equal to 100% of the principal amount of the 5.90% Bonds to be redeemed, plus accrued and unpaid interest thereon, if any, up to, but excluding, the redemption date.

6.35% Bonds, due 2028

On August 18, 2023, JEGI completed an offering of $600 million aggregate principal amount of 6.35% Bonds due 2028 (the “6.35% Bonds”). The 6.35% Bonds are fully and unconditionally guaranteed by the Company (the “6.35% Bonds Guarantee”). The 6.35% Bonds and the 6.35% Bonds Guarantee were offered pursuant to a prospectus supplement, dated August 15, 2023, to the prospectus dated February 6, 2023, that forms a part of the Company and JEGI’s automatic shelf registration statement on Form S-3ASR previously filed with the SEC, and were issued pursuant to the Indenture, as amended and supplemented by the Second Supplemental Indenture, dated as of August 18, 2023 (the “Second Supplemental Indenture”). Interest on the 6.35% Bonds is payable semi-annually in arrears on each February 18 and August 18, commencing on February 18, 2024, until maturity. The Notes will bear interest at a rate of 6.35% per annum and will mature on August 18, 2028. The 6.35% Bonds bear interest at 6.35% per annum.

Prior to July 18, 2028 (the “6.35% Bonds Par Call Date”), JEGI may redeem the 6.35% Bonds at its option, in whole or in part, at any time and from time to time, at the redemption price calculated by JEGI (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of: (1) (a) the sum of the present values of the remaining scheduled payments of principal and interest on the 6.35% Bonds being redeemed, assuming that such 6.35% Bonds matured on the 6.35% Bonds Par Call Date, discounted to the redemption date on a semiannual basis (assuming a 360-day year of twelve 30-day months), at the Treasury Rate (as defined in the Second Supplemental Indenture) plus 30 basis points, less (b) interest accrued to the redemption date, and (2) 100% of the principal amount of such 6.35% Bonds to be redeemed, plus, in either case, accrued and unpaid interest on the 6.35% Bonds, if any, to, but excluding, the redemption date. At any time and from time to time on or after the 6.35% Bonds Par Call Date, JEGI may redeem the 6.35% Bonds, at its option, in whole or in part, at a redemption price equal to 100% of the principal amount of the 6.35% Bonds to be redeemed, plus accrued and unpaid interest thereon, if any, to, but excluding, the redemption date.

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Other arrangements

During fiscal 2022, the Company entered into two treasury lock agreements with an aggregate notional value of $500.0 million to manage its expected interest rate exposure in anticipation of issuing up to $500.0 million of fixed rate debt. On February 13, 2023 and with the issuance of the 5.90% Bonds, the Company settled these treasury lock agreements. See Note 17- Commitments and Contingencies and Derivative Financial Instruments for more discussion around this transaction.

During fiscal 2020, the Company entered into interest rate and cross currency derivative contracts to swap a portion of our variable rate debt to fixed rate debt. See Note 17- Commitments and Contingencies and Derivative Financial Instruments for discussion regarding the Company's derivative instruments.

The Company has issued $0.9 million in letters of credit under the Revolving Credit Facility, leaving $2.25 billion of available borrowing capacity under the Revolving Credit Facility at December 29, 2023. In addition, the Company had issued $310.7 million under separate, committed and uncommitted letter-of-credit facilities for total issued letters of credit of $311.5 million at December 29, 2023.

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The components of lease expense (reflected in selling, general and administrative expenses) for the three months ended December 29, 2023 and December 30, 2022 were as follows (in thousands):

						Three Months Ended
						December 29, 2023						December 30, 2022
Lease expense
Operating lease expense						$	34,200					$	35,282
Variable lease expense						9,337						9,346
Sublease income						(4,711)						(4,406)
Total lease expense						$	38,826					$	40,222

Supplemental information related to the Company's leases for the three months ended December 29, 2023 and December 30, 2022 was as follows (in thousands):

						Three Months Ended
						December 29, 2023						December 30, 2022
Cash paid for amounts included in the measurements of lease liabilities						$	47,413					$	45,770
Right-of-use assets obtained in exchange for new operating lease liabilities						$	8,384					$	29,801
Weighted average remaining lease term - operating leases						5.8 years						6.2 years
Weighted average discount rate - operating leases						3.4%						3.0%

Total remaining lease payments under the Company's leases for the remainder of fiscal 2024 and for the succeeding years is as follows (in thousands):

Fiscal Year						Operating Leases
2024						$	131,023
2025						146,078
2026						122,727
2027						100,231
2028						82,567
Thereafter						160,807
						743,433
Less Interest						(68,291)
						$	675,142

Right-of-Use and Other Long-Lived Asset Impairment

During fiscal 2023, as a result of the Company's transformation initiatives, including the changing nature of the Company's use of office space for its workforce, the Company evaluated its existing real estate lease portfolio. These initiatives resulted in the abandonment of certain leased office spaces and the establishment of a formal plan to sublease certain other leased spaces that will no longer be utilized by the Company. In connection with the Company’s actions related to these initiatives, the Company evaluated certain of its lease right-of-use assets and related property, equipment and leasehold improvements for impairment under ASC 360.

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As a result of this analysis, the Company recognized impairment losses during the first quarter of fiscal 2023 of $27.1 million, which is included in selling, general and administrative expenses in the accompanying statement of earnings. The impairment losses include $24.3 million related to right-of-use lease assets and $2.8 million related to other long-lived assets, including property, equipment and improvements and leasehold improvements for the fiscal 2023 period.

The fair values for the asset groups relating to the impaired long-lived assets were estimated primarily using discounted cash flow models (income approach) with Level 3 inputs. The significant assumptions used in estimating fair value include the expected downtime prior to the commencement of future subleases, projected sublease income over the remaining lease periods and discount rates that reflect the level of risk associated with receiving future cash flows.

The following table presents the components of net periodic pension benefit expense recognized in earnings during the three months ended December 29, 2023 and December 30, 2022 (in thousands):

			Three Months Ended
			December 29, 2023						December 30, 2022
Component:
Service cost			$	2,261					$	1,748
Interest cost			21,560						20,233
Expected return on plan assets			(23,726)						(21,091)
Amortization of previously unrecognized items			1,949						1,304
Total net periodic pension benefit expense recognized			$	2,044					$	2,194

The service cost component of net periodic pension benefit is presented in the same line item as other compensation costs (direct cost of contracts and selling, general and administrative expenses) and the other components of net periodic pension expense are presented in miscellaneous income (expense), net on the Consolidated Statements of Earnings.

The following table presents certain information regarding the Company’s cash contributions to our pension plans for fiscal 2024 (in thousands):

Cash contributions made during the first three months of fiscal 2024			$	5,297
Cash contributions projected for the remainder of fiscal 2024			13,984
Total			$	19,281

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On March 2, 2021, Jacobs completed the strategic investment of a 65% interest in PA Consulting, a UK-based leading innovation and transformation consulting firm. PA Consulting is accounted for as a consolidated subsidiary and as a separate operating segment.

In connection with the PA Consulting investment, the Company recorded redeemable noncontrolling interests, including subsequent purchase accounting adjustments, representing the noncontrolling interest holders' equity interests in the form of preferred and common shares of PA Consulting, with substantially all of the value associated with these interests allocable to the preferred shares.

During the first quarter of 2024, PA Consulting repurchased certain shares of the redeemable noncontrolling interest holders for $24.4 million in cash. The difference between the cash purchase prices and the recorded book values of these repurchased interests was recorded in the Company’s consolidated retained earnings. The Company held 70% and 69% of the outstanding ownership of PA Consulting as of December 29, 2023 and September 29, 2023, respectively.

During the first quarter of 2024 the Company recognized approximately $1.8 million in redemption value adjustments associated with redeemable noncontrolling interests preference share repurchase and reissuance activities that were recorded as an increase in consolidated retained earnings and a $0.01 increase in earnings per share, the results of which had no impact on the Company’s overall results of operations, financial position or cash flows. See Note 6- Earnings Per Share and Certain Related Information for more information.

Changes in the redeemable noncontrolling interests during the three months ended December 29, 2023 are as follows (in thousands):

Balance at September 29, 2023			$	632,979
Accrued Preferred Dividend to Preference Shareholders			19,285
Attribution of Preferred Dividend to Common Shareholders			(19,285)
Net earnings attributable to redeemable noncontrolling interests to Common Shareholders			2,618
Redeemable Noncontrolling interests redemption value adjustment			25,718
Repurchase of redeemable noncontrolling interests			(26,258)
Cumulative translation adjustment and other			19,019
Balance at December 29, 2023			$	654,076

In addition, certain employees and non-employees of PA Consulting are eligible to receive equity-based incentive grants in the future under the terms of the applicable agreements. During the first quarter of fiscal 2024 and 2023, the Company recorded $1.6 million and $4.3 million, respectively, in expenses associated with these agreements which is reflected in selling, general and administrative expenses in the consolidated statements of earnings.

The Company, through its investment in PA Consulting, held $1.0 million and $2.8 million at December 29, 2023 and September 29, 2023, respectively, in cash that is restricted from general use and is included in Prepaid expenses and other on the Consolidated Balance Sheets.

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During fiscal 2023, the Company implemented restructuring and separation initiatives relating to the Separation Transaction which are expected to continue through fiscal 2025. Restructuring initiatives were also implemented during fiscal 2023 relating to our investment in PA Consulting, which is expected to continue through fiscal 2024, and the DVS segment reorganization, which is substantially completed. While restructuring activities for each of these programs are comprised mainly of employee termination costs, the separation activities and costs are primarily related to the engagement of outside services and internal personnel and other related costs dedicated to the Company’s Separation Transaction.

During fiscal 2022, the Company implemented certain restructuring and integration initiatives relating to the acquisitions of (i) BlackLynx, Inc. (“BlackLynx”) in November 2021, and (ii) StreetLight Data, Inc. (“StreetLight”) in February 2022. Also, during fiscal 2022 and continuing into fiscal 2023, the Company implemented further real estate rescaling efforts that were associated with its fiscal 2020 transformation program relating to real estate and other staffing initiatives. These initiatives are substantially complete.

During the fiscal year ended October 1, 2021, the Company recorded other-than-temporary impairment charges on its equity method investment in AWE Management Ltd (“AWE”) which were included in miscellaneous income (expense), net in the consolidated statement of earnings. During fiscal year 2022, the contractual operating arrangement with UK Ministry of Defence was terminated which has resulted in the wind down and full impairment of the AWE Joint Venture with immaterial activity expected going forward.

During fiscal 2021, the Company implemented certain integration initiatives associated with our PA Consulting investment. The activities are substantially completed.

During fiscal 2019 and continuing into fiscal 2020, the Company implemented certain restructuring and separation initiatives associated with the ECR sale and other related cost reduction initiatives. The restructuring activities and related costs were comprised mainly of separation and lease abandonment and sublease programs, while the separation activities and costs were mainly related to the engagement of consulting services and internal personnel and other related costs dedicated to the Company’s ECR-business separation. The activities of these initiatives have been substantially completed.

As part of the Company's acquisition of CH2M Hill Companies, Ltd. ("CH2M") during fiscal 2018, the Company implemented certain restructuring plans that were comprised mainly of severance and lease abandonment programs as well as integration activities involving the engagement of professional services and internal personnel dedicated to the Company's integration management efforts. The activities of these initiatives have been substantially completed.

Collectively, the above-mentioned restructuring activities are referred to as “Restructuring and other charges.”

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The following table summarizes the impacts of the Restructuring and other charges by reportable segment in connection with the Separation Transaction, PA Consulting investment, DVS segment reorganization, StreetLight and BlackLynx acquisitions, the Company’s transformation initiatives relating to real estate and other staffing programs, the ECR sale, and CH2M acquisition for the three months ended December 29, 2023 and December 30, 2022 (in thousands):

			Three Months Ended
			December 29, 2023						December 30, 2022
Critical Mission Solutions			$	2,163					$	2,212
People & Places Solutions			8,129						27,317
Divergent Solutions			900						1,581
PA Consulting			1,175						—
Corporate			29,002						3,333
Total			$	41,369					$	34,443
Amounts included in:
Operating profit (mainly SG&A) (1)			$	41,369					$	35,072
Other Income, net			—						(629)
			$	41,369					$	34,443

(1)The three months ended December 29, 2023 included $40.1 million in restructuring and other charges mainly relating to the Separation Transaction (primarily professional services and employee separation costs). The three months ended December 30, 2022, included $27.8 million in charges associated mainly with real estate impairments and related charges.

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The activity in the Company’s accruals for Restructuring and other charges for the three months ended December 29, 2023 is as follows (in thousands):

Balance at September 29, 2023			$	37,318
Net Charges (Credits) (1)			41,320
Payments and other			(46,145)
Balance at December 29, 2023			$	32,493

(1) Excludes other net charges associated mainly with the real estate related impairments and other transformation activities during the three months ended December 29, 2023.

The following table summarizes the Restructuring and other charges by major type of costs for the three months ended December 29, 2023 and December 30, 2022 (in thousands):

			Three Months Ended
			December 29, 2023						December 30, 2022
Lease Abandonments and Impairments			$	49					$	26,831
Voluntary and Involuntary Terminations			11,728						6,570
Outside Services (1)			24,983						675
Other (2)			4,609						367
Total			$	41,369					$	34,443

(1) Amounts in the three months ended December 29, 2023 are comprised of outside services relating to the Separation Transaction.

(2) Amounts in the three months ended December 29, 2023 are comprised of charges relating to the Separation Transaction.

Cumulative amounts incurred to date under our various Restructuring and other activities described above by each major type of cost as of December 29, 2023 are as follows (in thousands):

Lease Abandonments and Impairments			$	432,773
Voluntary and Involuntary Terminations			180,044
Outside Services			370,673
Other			200,543
Total			$	1,184,033

Derivative Financial Instruments

The Company is exposed to interest rate risk under its variable rate borrowings and additionally, due to the nature of the Company's international operations, we are at times exposed to foreign currency risk. As such, we sometimes enter into foreign exchange hedging contracts and interest rate hedging contracts in order to limit our exposure to fluctuating foreign currencies and interest rates.

During fiscal 2022, the Company entered into two treasury lock agreements with a total notional value of $500 million to manage its interest rate exposure to the anticipated issuance of fixed rate debt before December 2023. On February 13, 2023, the Company settled these treasury lock agreements and issued the 5.90% Bonds in the aggregate principal amount of $500 million, which resulted in the receipt of cash and a gain of $37.4 million, before tax, which is being amortized to interest expense and recognized over the term of the 5.90% Bonds. See Note 12- Borrowings for further discussion relating to the terms of the 5.90% Bonds. The unrealized net gain on these instruments was $25.8 million and $26.5 million, net of tax, and is included in accumulated other comprehensive income as of December 29, 2023 and September 29, 2023, respectively.

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In fiscal 2020 we entered into interest rate swap agreements with a notional value of $779.9 million as of December 29, 2023 to manage the interest rate exposure on our variable rate loans. By entering into the swap agreements, the Company converted the LIBOR and SONIA rate based liabilities into fixed rate liabilities. The fair value of the interest rate swaps at December 29, 2023 and September 29, 2023 was $76.3 million and $102.6 million respectively, which are included in miscellaneous other assets on the consolidated balance sheet. The unrealized net gain on these interest rate swaps as of December 29, 2023 and September 29, 2023 was $57.4 million and $77.2 million, respectively, net of tax, and was included in accumulated other comprehensive income.

Additionally, in fiscal 2020, we entered into a cross-currency swap agreement with a notional value of $127.8 million to manage the interest rate and foreign currency exposure on our USD borrowings by a European subsidiary. By entering into the cross currency swap, our LIBOR rate based borrowing in USD to a fixed rate Euro liability, for periods ranging from three and a half to ten years. During the fourth quarter of fiscal 2023, the Company paid down the borrowings hedged by the cross currency swap and settled the cross currency swap agreement.

During fiscal 2023, the aggregate liability amounts denominated in U.S. dollars transitioned from underlying LIBOR benchmarked rates to the SOFR and the terms of the swaps were amended accordingly. The swaps were designated as cash-flow hedges in accordance with ASC 815, Derivatives and Hedging.

Additionally, the Company held foreign exchange forward contracts in currencies that support our operations, including British Pound, Euro, Australian Dollar and other currencies, with notional values of $964.9 million at December 29, 2023 and $857.7 million at September 29, 2023. The length of these contracts currently ranges from one week to 12 months. The fair value of the foreign exchange contracts at December 29, 2023 was $23.3 million, of which $24.8 million is included within current assets and $(1.5) million is included within accounts payable on the consolidated balance sheet as of December 29, 2023. The fair value of the contracts as of September 29, 2023 was $9.5 million, of which $16.1 million is included within current assets and $(6.6) million is included within accounts payable on the consolidated balance sheet as of September 29, 2023. Associated income statement impacts are included in miscellaneous income (expense) in the consolidated statements of earnings for both periods.

The fair value measurements of these derivatives are being made using Level 2 inputs under ASC 820, Fair Value Measurement, as the measurements are based on observable inputs other than quoted prices in active markets. We are exposed to risk from credit-related losses resulting from nonperformance by counterparties to our financial instruments. We perform credit evaluations of our counterparties under forward exchange and interest rate contracts and expect all counterparties to meet their obligations. We have not experienced credit losses from our counterparties.

Contractual Guarantees and Insurance

In the normal course of business, we make contractual commitments (some of which are supported by separate guarantees) and on occasion we are a party in a litigation or arbitration proceeding. The litigation or arbitration in which we are involved includes personal injury claims, professional liability claims and breach of contract claims. Where we provide a separate guarantee, it is strictly in support of the underlying contractual commitment. Guarantees take various forms including surety bonds required by law, or standby letters of credit ("LOC" and also referred to as “bank guarantees”) or corporate guarantees given to induce a party to enter into a contract with a subsidiary. Standby LOCs are also used as security for advance payments or in various other transactions. The guarantees have various expiration dates ranging from an arbitrary date to completion of our work (e.g., engineering only) to completion of the overall project. We record in the Consolidated Balance Sheets amounts representing our estimated liability relating to such guarantees, litigation and insurance claims. Guarantees are accounted for in accordance with ASC 460-10, Guarantees, at fair value at the inception of the guarantee.

At December 29, 2023 and September 29, 2023, the Company had issued and outstanding approximately $311.5 million and $322.0 million, respectively, in LOCs and $2.1 billion and $2.0 billion, respectively, in surety bonds.

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We maintain insurance coverage for most insurable aspects of our business and operations. Our insurance programs have varying coverage limits depending upon the type of insurance and include certain conditions and exclusions which insurance companies may raise in response to any claim that is asserted by or against the Company. We have also elected to retain a portion of losses and liabilities that occur through using various deductibles, limits, and retentions under our insurance programs. As a result, we may be subject to a future liability for which we are only partially insured or completely uninsured. We intend to mitigate any such future liability by continuing to exercise prudent business judgment in negotiating the terms and conditions of the contracts which the Company enters with its clients. Our insurers are also subject to business risk and, as a result, one or more of them may be unable to fulfill their insurance obligations due to insolvency or otherwise.

Additionally, as a contractor providing services to the U.S. federal government, we are subject to many types of audits, investigations, and claims by, or on behalf of, the government including with respect to contract performance, pricing, cost allocations, procurement practices, labor practices, and socioeconomic obligations. Furthermore, our income, franchise, and similar tax returns and filings are also subject to audit and investigation by the Internal Revenue Service, most states within the United States, as well as by various government agencies representing jurisdictions outside the United States.

Our Consolidated Balance Sheets include amounts representing our probable estimated liability relating to such claims, guarantees, litigation, audits, and investigations. We perform an analysis to determine the level of reserves to establish for insurance-related claims that are known and have been asserted against us, as well as for insurance-related claims that are believed to have been incurred based on actuarial analysis but have not yet been reported to our claims administrators as of the respective balance sheet dates. We include any adjustments to such insurance reserves in our consolidated results of operations. Insurance recoveries are recorded as assets if recovery is probable and estimated liabilities are not reduced by expected insurance recoveries.

The Company believes, after consultation with counsel, that such guarantees, litigation, U.S. government contract-related audits, investigations and claims, and income tax audits and investigations should not have a material adverse effect on our consolidated financial statements, beyond amounts currently accrued.

Litigation and Investigations

In 2012, CH2M HILL Australia PTY Limited, a subsidiary of CH2M, entered into a 50/50 integrated joint venture with Australian construction contractor UGL Infrastructure Pty Limited. The joint venture entered into a Consortium Agreement with General Electric and GE Electrical International Inc. The Consortium was awarded a subcontract by JKC Australia LNG Pty Limited ("JKC") for the engineering, procurement, construction and commissioning of a 360 MW Combined Cycle Power Plant for INPEX Operations Australia Pty Limited at Blaydin Point, Darwin, NT, Australia (the "Legacy CH2M Matter"). The subcontract was terminated in January 2017. In or around August 2017, the Consortium commenced an arbitration. On April 12, 2022, JKC and the Consortium entered into a confidential deed of settlement (“Settlement Agreement”). Under the terms of the Settlement Agreement, CH2M, as guarantor of CH2M Australia PTY Limited’s obligations with respect to the subcontract with JKC, made a cash payment to JKC in April 2022 of AUD 640 million (or approximately $475 million using mid-April 2022 exchange rates). As a result of the settlement agreement, additional pre-tax charges of $91.3 million were recorded during the year ended September 30, 2022 for this matter (over amounts previously reserved and reported in long-term Other Deferred Liabilities in the Company's Consolidated Balance Sheet). The Settlement Agreement provided for a release of claims between JKC and each member of the Consortium, and in connection with this agreement the members of the Consortium also waived all claims against each other and their respective parent guarantors relating to the project.

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On December 22, 2008, a coal fly ash pond at the Kingston Power Plant of the Tennessee Valley Authority ("TVA") was breached, releasing fly ash waste into the Emory River and surrounding community. In February 2009, TVA awarded a contract to the Company to provide project management services associated with the clean-up. All remediation and dredging were completed in August 2013 by other contractors under direct contracts with TVA. The Company did not perform the remediation, and its scope was limited to program management services. Certain employees of the contractors performing the cleanup work on the project filed lawsuits against the Company beginning in August 2013, alleging they were injured due to the Company's failure to protect the plaintiffs from exposure to fly ash, and asserting related personal injuries. The primary case, Greg Adkisson, et al. v. Jacobs Engineering Group Inc., case No. 3:13-CV-505-TAV-HBG, filed in the U.S. District Court for the Eastern District of Tennessee, consisted of 10 consolidated cases. This case and the related cases involved several hundred plaintiffs that were employees of the contractors that completed the remediation and dredging work. In the second quarter of fiscal 2023, the Company entered into a settlement agreement with the plaintiffs whose cases had not been previously dismissed. As of the third quarter of fiscal 2023, all conditions to the settlement had been satisfied, and the cases dismissed. The amount of the settlement was not material to the Company's business, financial condition, results of operations or cash flows.

The Company's four operating segments are comprised of its two global lines of business ("LOBs"): Critical Mission Solutions ("CMS") and People & Places Solutions ("P&PS"), its business unit Divergent Solutions ("DVS") and its majority investment in PA Consulting.

The Company’s Chief Executive Officer is the Chief Operating Decision Maker (“CODM”) and can evaluate the performance of each of these segments and make appropriate resource allocations among each of the segments. Under this organization, the sales function is managed by segment, and accordingly, the associated cost is embedded in the segments and reported to the respective head of each segment. In addition, a portion of the costs of other support functions (e.g., finance, legal, human resources, and information technology) is allocated to each segment using methodologies which, we believe, effectively attribute the cost of these support functions to the revenue generating activities of the Company on a rational basis. The cost of the Company’s cash incentive plan, the Leadership Performance Plan ("LPP"), formerly named the Management Incentive Plan, and the expense associated with the Jacobs 1999 Stock Incentive Plan, which was amended and restated in the second quarter of 2023 and is now referred to as the Jacobs 2023 Stock Incentive Plan (the "2023 SIP") have likewise been charged to the segments except for those amounts determined to relate to the business as a whole (which amounts remain in other corporate expenses).

Financial information for each segment is reviewed by the CODM to assess performance and make decisions regarding the allocation of resources. The CODM evaluates the operating performance of our operating segments using segment operating profit, which is defined as margin less “corporate charges” (e.g., the allocated amounts described above). The Company incurs certain Selling, General and Administrative costs (“SG&A”) that relate to its business as a whole which are not allocated to the segments.

The following tables present total revenues and segment operating profit from continuing operations for each reportable segment (in thousands) and includes a reconciliation of segment operating profit to total U.S. GAAP operating profit by including certain corporate-level expenses, Restructuring and other charges (as defined in Note 16- Restructuring and Other Charges) and transaction and integration costs (in thousands).

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			For the Three Months Ended
			December 29, 2023						December 30, 2022
Revenues from External Customers:
Critical Mission Solutions			$	1,128,603					$	1,075,175
People & Places Solutions			2,470,441						2,226,985
Divergent Solutions			254,180						214,465
PA Consulting			306,001						282,043
Total			$	4,159,225					$	3,798,668

			For the Three Months Ended
			December 29, 2023						December 30, 2022
Segment Operating Profit:
Critical Mission Solutions			$	93,407					$	82,220
People & Places Solutions			224,998						226,619
Divergent Solutions (1)			7,581						11,967
PA Consulting			54,455						51,027
Total Segment Operating Profit			380,441						371,833
Other Corporate Expenses (2)			(121,060)						(93,686)
Restructuring, Transaction and Other Charges (3)			(55,318)						(40,342)
Total U.S. GAAP Operating Profit			204,063						237,805
Total Other Expense, net			(38,314)						(40,324)
Earnings from Continuing Operations Before Taxes			$	165,749					$	197,481

(1)			Includes an approximate $15 million pre-tax non-cash charge associated with an inventory write down during the fiscal 2024 period comprised of adjustments of immaterial cumulative inventory misstatements previously reported which would not have been material to any prior period financial statements nor any amounts reported in the current period.
(2)			Other corporate expenses included intangibles amortization of $51.1 million and $49.8 million for the three months ended December 29, 2023 and December 30, 2022, respectively, along with an approximate $10 million intangibles impairment charge in the three month ended December 29, 2023 period. Additionally, the comparison of the three month period of fiscal 2024 to the corresponding 2023 period was unfavorably impacted by the one-time net favorable impacts of $41 million relating mainly to changes in employee benefits programs in the prior year, partly offset by year over year favorable department spending as well as favorable impacts of corporate functional overhead cost recovery by our lines of business.
(3)			The three months ended December 29, 2023 included $40.1 million in restructuring and $11.0 million of transaction charges, mainly relating to the Separation Transaction (primarily professional services and employee separation costs). Included in the three months ended December 30, 2022 were mainly $27.1 million in restructuring and other charges associated mainly with real estate impairments with the remainder associated with other miscellaneous separation and transaction professional services costs from the prior year.

(1)Included in other corporate expenses in the above table are costs and expenses, which relate to general corporate activities as well as corporate-managed benefit and insurance programs. Such costs and expenses include: (i) those elements of SG&A expenses relating to the business as a whole; (ii) those elements of our incentive compensation plans relating to corporate personnel whose other compensation costs are not allocated to the LOBs; (iii) the amortization of intangible assets acquired as part of business combinations; (iv) the quarterly variances between the Company’s actual costs of certain of its self-insured integrated risk and employee benefit programs and amounts charged to the LOBs; and (v) certain adjustments relating to costs associated with the Company’s international defined benefit pension plans. In addition, other corporate expenses may also include from time to time certain adjustments to contract margins (both positive and negative) associated with projects, as well as other items, where it has been determined that such adjustments are not indicative of the performance of the related LOB.

See also the further description of results of operations for our operating segments in Item 2- Management’s Discussion and Analysis of Financial Condition and Results of Operations.

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On November 28, 2023, Steven J. Demetriou, our Executive Chair, adopted a Rule 10b5-1 trading arrangement, as defined in Item 408(a) of Regulation S-K, intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. The arrangement provided for the sale of an aggregate of up to 42,000 shares of the Company’s common stock, subject to certain conditions. The arrangement will terminate on August 2, 2024.

On December 8, 2023, Patrick X. Hill, Executive Vice President and President, Global Operations, adopted a Rule 10b5-1 trading arrangement, as defined in Item 408(a) of Regulation S-K, intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. The arrangement provided for the sale of up to an aggregate of 5,486 shares of the Company’s common stock, subject to certain conditions. The arrangement will terminate on June 7, 2024.

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v3.24.0.1

Cover Page - shares	3 Months Ended
	Dec. 29, 2023	Jan. 26, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 29, 2023
Document Transition Report	false
Entity File Number	1-7463
Entity Registrant Name	JACOBS SOLUTIONS INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	88-1121891
Entity Address, Address Line One	1999 Bryan Street
Entity Address, Address Line Two	Suite 3500
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75201
City Area Code	214
Local Phone Number	583 – 8500
Title of 12(b) Security	Common Stock
Trading Symbol	J
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		125,650,977
Entity Central Index Key	0000052988
Current Fiscal Year End Date	--09-30
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false

v3.24.0.1

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 29, 2023	Sep. 29, 2023
Current Assets:
Cash and cash equivalents	$ 1,142,227	$ 926,582
Receivables and contract assets	3,676,508	3,558,806
Prepaid expenses and other	156,533	204,965
Total current assets	4,975,268	4,690,353
Property, Equipment and Improvements, net	353,305	357,032
Other Noncurrent Assets:
Goodwill	7,421,398	7,343,526
Intangibles, net	1,268,329	1,271,943
Deferred income tax assets	46,525	53,131
Operating lease right-of-use assets	405,748	414,384
Miscellaneous	481,631	486,740
Total other noncurrent assets	9,623,631	9,569,724
Assets	14,952,204	14,617,109
Current Liabilities:
Short-term debt	55,839	61,430
Accounts payable	1,114,790	1,143,802
Accrued liabilities	1,375,553	1,301,644
Operating lease liability	152,472	152,077
Contract liabilities	945,892	763,608
Total current liabilities	3,644,546	3,422,561
Long-term debt	2,834,880	2,813,471
Liabilities relating to defined benefit pension and retirement plans	276,307	258,540
Deferred income tax liabilities	153,869	221,158
Long-term operating lease liability	522,670	543,230
Other deferred liabilities	131,006	125,088
Commitments and Contingencies
Redeemable Noncontrolling interests	654,076	632,979
Capital stock:
Preferred stock, $1 par value, authorized - 1,000,000 shares; issued and outstanding - none	0	0
Common stock, $1 par value, authorized - 240,000,000 shares; issued and outstanding - 125,599,058 shares and 125,976,998 shares as of December 29, 2023 and September 29, 2023, respectively	125,599	125,977
Additional paid-in capital	2,729,416	2,735,325
Retained earnings	4,604,850	4,542,872
Accumulated other comprehensive loss	(781,591)	(857,954)
Total Jacobs stockholders’ equity	6,678,274	6,546,220
Noncontrolling interests	56,576	53,862
Total Group stockholders’ equity	6,734,850	6,600,082
Total liabilities and equity	$ 14,952,204	$ 14,617,109

v3.24.0.1

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 29, 2023	Sep. 29, 2023
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	240,000,000	240,000,000
Common stock, issued (in shares)	125,599,058	125,976,998
Common stock, outstanding (in shares)	125,599,058	125,976,998

v3.24.0.1

CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Income Statement [Abstract]
Revenues	$ 4,159,225	$ 3,798,668
Direct cost of contracts	(3,308,687)	(2,983,955)
Gross profit	850,538	814,713
Selling, general and administrative expenses	(646,475)	(576,908)
Operating Profit	204,063	237,805
Other Income (Expense):
Interest income	8,233	3,007
Interest expense	(43,352)	(40,077)
Miscellaneous expense	(3,195)	(3,254)
Total other expense, net	(38,314)	(40,324)
Earnings from Continuing Operations Before Taxes	165,749	197,481
Income Tax benefit (expense) from Continuing Operations	16,279	(50,103)
Net Earnings of the Group from Continuing Operations	182,028	147,378
Net Loss of the Group from Discontinued Operations	(574)	(708)
Net Earnings of the Group	181,454	146,670
Net Earnings Attributable to Noncontrolling Interests from Continuing Operations	(7,226)	(7,031)
Net Earnings Attributable to Redeemable Noncontrolling interests	(2,618)	(3,992)
Net Earnings Attributable to Jacobs from Continuing Operations	172,184	136,355
Net Earnings Attributable to Jacobs	$ 171,610	$ 135,647
Net Earnings Per Share:
Basic Net Earnings from Continuing Operations Per Share (in dollars per share)	$ 1.38	$ 1.08
Basic Net Loss from Discontinued Operations Per Share (in dollars per share)	0	(0.01)
Basic Earnings Per Share (in dollars per share)	1.37	1.07
Diluted Net Earnings from Continuing Operations Per Share (in dollars per share)	1.37	1.07
Diluted Net Loss from Discontinued Operations Per Share (in dollars per share)	0	(0.01)
Diluted Earnings Per Share (in dollars per share)	$ 1.37	$ 1.06

v3.24.0.1

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Statement of Comprehensive Income [Abstract]
Net Earnings of the Group	$ 181,454	$ 146,670
Other Comprehensive Income:
Foreign currency translation adjustment	108,048	165,335
Change in cash flow hedges	(27,666)	(10,144)
Change in pension plan liabilities	(10,753)	(22,266)
Other comprehensive income before taxes	69,629	132,925
Income Tax Benefit (Expense):
Foreign currency translation adjustment	0	(6,609)
Cash flow hedges	7,196	3,270
Change in pension plan liabilities	(462)	(308)
Income Tax Benefit (Expense):	6,734	(3,647)
Net other comprehensive income	76,363	129,278
Net Comprehensive Income of the Group	257,817	275,948
Net Earnings Attributable to Noncontrolling Interests	(7,226)	(7,031)
Net Earnings Attributable to Redeemable Noncontrolling interests	(2,618)	(3,992)
Net Comprehensive Income Attributable to Jacobs	$ 247,973	$ 264,925

v3.24.0.1

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Total Jacobs Stockholders’ Equity	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Beginning balance at Sep. 30, 2022	$ 6,104,392	$ 6,060,056	$ 127,393	$ 2,682,009	$ 4,225,784	$ (975,130)	$ 44,336
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	142,678	135,647			135,647		7,031
Foreign currency translation adjustments, net of deferred taxes	158,726	158,726				158,726
Pension liability, net of deferred taxes	(22,574)	(22,574)				(22,574)
Change in cash flow hedges, net of deferred taxes	(6,874)	(6,874)				(6,874)
Dividends	(874)	(874)			(874)
Redeemable Noncontrolling interests redemption value adjustment	(23,317)	(23,317)			(23,317)
Repurchase and issuance of redeemable noncontrolling interests	11,337	11,337			11,337
Noncontrolling interests - distributions and other	(1,873)						(1,873)
Stock based compensation	20,231	20,231		20,231
Issuances of equity securities including shares withheld for taxes	(7,732)	(7,732)	514	(3,762)	(4,484)
Repurchases of equity securities	(140,522)	(140,522)	(1,238)	(26,057)	(113,227)
Ending balance at Dec. 30, 2022	6,233,598	6,184,104	126,669	2,672,421	4,230,866	(845,852)	49,494
Beginning balance at Sep. 29, 2023	6,600,082	6,546,220	125,977	2,735,325	4,542,872	(857,954)	53,862
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	178,836	171,610			171,610		7,226
Foreign currency translation adjustments, net of deferred taxes	108,048	108,048				108,048
Pension liability, net of deferred taxes	(11,215)	(11,215)				(11,215)
Change in cash flow hedges, net of deferred taxes	(20,470)	(20,470)				(20,470)
Dividends	(361)	(361)			(361)
Redeemable Noncontrolling interests redemption value adjustment	(25,718)	(25,718)			(25,718)
Repurchase and issuance of redeemable noncontrolling interests	1,898	1,898			1,898
Noncontrolling interests - distributions and other	(4,512)						(4,512)
Stock based compensation	19,310	19,310		19,310
Issuances of equity securities including shares withheld for taxes	(11,032)	(11,032)	411	(8,093)	(3,350)
Repurchases of equity securities	(100,016)	(100,016)	(789)	(17,126)	(82,101)
Ending balance at Dec. 29, 2023	$ 6,734,850	$ 6,678,274	$ 125,599	$ 2,729,416	$ 4,604,850	$ (781,591)	$ 56,576

v3.24.0.1

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Statement of Stockholders' Equity [Abstract]
Foreign currency translation adjustment	$ 0	$ 6,609
Pension and retiree medical plan liability, deferred taxes	462	308
Derivative gains (losses), deferred tax expense (benefit)	$ (7,196)	$ (3,270)

v3.24.0.1

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Cash Flows from Operating Activities:
Net earnings attributable to the Group	$ 181,454	$ 146,670
Depreciation and amortization:
Property, equipment and improvements	25,169	27,979
Intangible assets	51,119	49,773
Stock based compensation	19,310	20,231
Equity in earnings of operating ventures, net of return on capital distributions	1,870	2,613
Loss on disposals of assets, net	608	241
Impairment of long-lived assets and equity method investment	0	27,142
Deferred income taxes	(58,239)	13,797
Changes in assets and liabilities, excluding the effects of businesses acquired:
Receivables and contract assets, net of contract liabilities	102,705	127,144
Prepaid expenses and other current assets	50,216	8,219
Miscellaneous other assets	28,385	42,578
Accounts payable	(35,843)	(51,669)
Accrued liabilities	37,584	(127,043)
Other deferred liabilities	(1,665)	8,462
Other, net	15,688	6,160
Net cash provided by operating activities	418,361	302,297
Cash Flows from Investing Activities:
Additions to property and equipment	(17,306)	(32,187)
Disposals of property and equipment and other assets	43	8
Capital contributions to equity investees, net of return of capital distributions	1,266	384
Acquisitions of businesses, net of cash acquired	0	(16,943)
Net cash used for investing activities	(15,997)	(48,738)
Cash Flows from Financing Activities:
Proceeds from long-term borrowings	540,401	1,282,000
Repayments of long-term borrowings	(567,752)	(1,289,421)
Repayments of short-term borrowings	(6,262)	0
Debt issuance costs	(1,606)	0
Proceeds from issuances of common stock	11,355	14,798
Common stock repurchases	(100,016)	(140,522)
Taxes paid on vested restricted stock	(22,387)	(22,530)
Cash dividends to shareholders	(33,366)	(29,811)
Net dividends associated with noncontrolling interests	(4,708)	(2,307)
Repurchase of redeemable noncontrolling interests	(24,360)	(58,353)
Net cash used for financing activities	(208,701)	(246,146)
Effect of Exchange Rate Changes	34,148	51,806
Net Increase in Cash and Cash Equivalents and Restricted Cash	227,811	59,219
Cash and Cash Equivalents, including Restricted Cash, at the Beginning of the Period	929,445	1,154,207
Cash and Cash Equivalents, including Restricted Cash, at the End of the Period	$ 1,157,256	$ 1,213,426

v3.24.0.1

Basis of Presentation	3 Months Ended
	Dec. 29, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Unless the context otherwise requires: •References herein to “Jacobs” are to Jacobs Solutions Inc. and its predecessors; •References herein to the “Company”, “we”, “us” or “our” are to Jacobs Solutions Inc. and its consolidated subsidiaries; and •References herein to the “Group” are to the combined economic interests and activities of the Company and the persons and entities holding noncontrolling interests in our consolidated subsidiaries. On August 29, 2022, Jacobs Engineering Group Inc. ("JEGI"), the predecessor to Jacobs Solutions Inc., implemented a holding company structure, which resulted in Jacobs Solutions Inc. becoming the parent company of, and successor issuer to, JEGI (the "Holding Company Reorganization"). For purposes of this report, references to Jacobs and the "Company", "we", "us" or "our" or our management or business at any point prior to the Holding Company Implementation Date refer to JEGI, or JEGI and its consolidated subsidiaries as the predecessor to Jacobs Solutions Inc. The accompanying consolidated financial statements and financial information included herein have been prepared pursuant to the interim period reporting requirements of Form 10-Q. Consequently, certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) have been condensed or omitted. Readers of this Quarterly Report on Form 10-Q should also read our consolidated financial statements and the notes thereto included in our Annual Report on Form 10-K for the fiscal year ended September 29, 2023 (“2023 Form 10-K”). In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments (consisting of normal recurring adjustments) necessary for a fair presentation of our consolidated financial statements at December 29, 2023, and for the three months ended December 29, 2023. Our interim results of operations are not necessarily indicative of the results to be expected for the full fiscal year. On November 20, 2023, Jacobs entered into a definitive agreement to spin-off and combine our Critical Mission Solutions ("CMS") and portions of our Divergent Solutions business, including Cyber & Intelligence (the "Separated Businesses") with Amentum Parent Holdings LLC ("Amentum"), in a Reverse Morris Trust transaction intended to be tax-free to Jacobs’ shareholders for U.S. federal income tax purposes (hereinafter referred to as the “Separation Transaction”). The Separation Transaction, which is expected to close in fiscal year 2024, is subject to regulatory approvals and other customary closing conditions. On April 26, 2019, Jacobs completed the sale of its Energy, Chemicals and Resources ("ECR") business to Worley Limited ("Worley"), a company incorporated in Australia, for a purchase price of $3.4 billion consisting of (i) $2.8 billion in cash plus (ii) 58.2 million ordinary shares of Worley, subject to adjustments for changes in working capital and certain other items (the “ECR sale”). As a result of the ECR sale, substantially all ECR-related assets and liabilities were sold (the "Disposal Group"). We determined that the Disposal Group should be reported as discontinued operations in accordance with ASC 210-05, Discontinued Operations because their disposal represents a strategic shift that had a major effect on our operations and financial results. As such, the financial results of the ECR business are reflected in our unaudited Consolidated Statements of Earnings as discontinued operations for all periods presented and all of the ECR business to be sold under the terms of the ECR sale had been conveyed to Worley and as such, no amounts remain held for sale.

v3.24.0.1

Use of Estimates and Assumptions	3 Months Ended
	Dec. 29, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Use of Estimates and Assumptions	Use of Estimates and Assumptions The preparation of financial statements in conformity with U.S. GAAP requires us to employ estimates and make assumptions that affect the reported amounts of certain assets and liabilities; the revenues and expenses reported for the periods covered by the financial statements; and certain amounts disclosed in these Notes to the Consolidated Financial Statements. Although such estimates and assumptions are based on management’s most recent assessment of the underlying facts and circumstances utilizing the most current information available and past experience, actual results could differ significantly from those estimates and assumptions. Our estimates, judgments and assumptions are evaluated periodically and adjusted accordingly. Please refer to Note 2- Significant Accounting Policies of Notes to Consolidated Financial Statements included in our 2023 Form 10-K for a discussion of other significant estimates and assumptions affecting our consolidated financial statements.

v3.24.0.1

Fair Value and Fair Value Measurements	3 Months Ended
	Dec. 29, 2023
Fair Value Disclosures [Abstract]
Fair Value and Fair Value Measurements	Fair Value and Fair Value Measurements Certain amounts included in the accompanying consolidated financial statements are presented at fair value. Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants as of the date fair value is determined (the “measurement date”). When determining fair value, we consider the principal or most advantageous market in which we would transact, and we consider only those assumptions we believe a typical market participant would consider when pricing an asset or liability. In measuring fair value, we use the following inputs in the order of priority indicated: Level 1 - Quoted prices in active markets for identical assets or liabilities. Level 2 - Observable inputs other than quoted prices in active markets included in Level 1, such as (i) quoted prices for similar assets or liabilities; (ii) quoted prices in markets that have insufficient volume or infrequent transactions (e.g., less active markets); and (iii) model-driven valuations in which all significant inputs are observable or can be derived principally from, or corroborated with, observable market data for substantially the full term of the asset or liability. Level 3 - Unobservable inputs to the valuation methodology that are significant to the fair value measurement. Please refer to Note 2- Significant Accounting Policies of Notes to Consolidated Financial Statements included in our 2023 Form 10-K for a more complete discussion of the various items within the consolidated financial statements measured at fair value and the methods used to determine fair value. Please also refer to Note 17- Commitments and Contingencies and Derivative Financial Instruments for discussion regarding the Company's derivative instruments. The net carrying amounts of cash and cash equivalents, trade receivables and payables and short-term debt approximate fair value due to the short-term nature of these instruments. See Note 12- Borrowings for a discussion of the fair value of long-term debt. Fair value measurements relating to our business combinations and goodwill allocations related to our segment realignment are made primarily using Level 3 inputs including discounted cash flow techniques. Fair value for the identified intangible assets is generally estimated using inputs primarily for the income approach using the multiple period excess earnings method and the relief from royalties method. The significant assumptions used in estimating fair value include (i) revenue projections of the business, including profitability, (ii) attrition rates and (iii) the estimated discount rate that reflects the level of risk associated with receiving future cash flows. Other personal property assets, such as furniture, fixtures and equipment, are valued using the cost approach, which is based on replacement or reproduction costs of the asset less depreciation. The fair value of the contingent consideration is estimated using a Monte Carlo simulation and the significant assumptions used include projections of revenues and probabilities of meeting those projections. Key inputs to the valuation of the noncontrolling interests include projected cash flows and the expected volatility associated with those cash flows.

v3.24.0.1

New Accounting Pronouncements	3 Months Ended
	Dec. 29, 2023
Accounting Standards Update and Change in Accounting Principle [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements ASU 2023-09, Income Taxes, (Topic 740): Improvements to Income Tax Disclosures, provides qualitative and quantitative updates to the Company's effective income tax rate reconciliation and income taxes paid disclosures, among others, in order to enhance the transparency of income tax disclosures, including consistent categories and greater disaggregation of information in the rate reconciliation and disaggregation by jurisdiction of income taxes paid. The amendments in ASU 2023-09 are effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments should be applied prospectively; however, retrospective application is also permitted. ASU 2023-09 will be effective in the Company's annual fiscal 2026 period. The Company has identified and is implementing changes to processes and internal controls to meet the standard’s updated reporting and disclosure requirements. ASU 2023-07, Segment Reporting, (Topic 280): Improvements to Reportable Segment Disclosures, requires disclosure of significant segment expenses that are regularly provided to the chief operating decision maker (“CODM”) and included within each reported measure of segment profit or loss, an amount and description of its composition for other segment items to reconcile to segment profit or loss, and the title and position of the entity’s CODM. The amendments in this update also expand the interim segment disclosure requirements. ASU 2023-07 is effective for annual periods beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted and the amendments in this update are required to be applied on a retrospective basis. The Company is evaluating the impact of this guidance on its consolidated financial statements and related disclosures. ASU 2023-06, Disclosure Improvements: Amendments - Codification Amendments in Response to the Disclosure Update and Simplification Initiative of the Securities and Exchange Commission ("SEC"). The Financial Accounting Standards Board issued the standard to introduce changes to US GAAP that originate in either SEC Regulation S-X or S-K, which are rules about the form and content of financial reports filed with the SEC. The provisions of the standard are contingent upon instances where the SEC removes the related disclosure provisions from Regulation S-X and S-K. The Company does not expect that the application of this standard will have a material impact on our consolidated financial statements and related disclosures.

v3.24.0.1

Revenue Accounting for Contracts	3 Months Ended
	Dec. 29, 2023
Revenue from Contract with Customer [Abstract]
Revenue Accounting for Contracts	Revenue Accounting for Contracts Disaggregation of Revenues Our revenues are principally derived from contracts to provide a diverse range of technical, professional, and construction services to a large number of industrial, commercial, and governmental clients. We provide a broad range of engineering, design, and architectural services; construction and construction management services; operations and maintenance services; and technical, digital, process, scientific and systems consulting services. We provide our services through offices and subsidiaries located primarily in North America, Europe, the Middle East, India, Australia, Africa, and Asia. We provide our services under cost-reimbursable and fixed-price contracts. Our contracts are with many different customers in numerous industries. Refer to Note 18- Segment Information for additional information on how we disaggregate our revenues by reportable segment. The following table further disaggregates our revenue by geographic area for the three months ended December 29, 2023 and December 30, 2022 (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Revenues:      United States $ 2,798,055  $ 2,536,114       Europe 925,197  854,734       Canada 63,375  61,829       Asia 30,940  34,824       India 35,743  40,344       Australia and New Zealand 173,771  161,040       Middle East and Africa 132,144  109,783  Total $ 4,159,225  $ 3,798,668  Contract Liabilities Contract liabilities represent amounts billed to clients in excess of revenue recognized to date. Revenue recognized for the three months ended December 29, 2023 that was previously included in the contract liability balance on September 29, 2023 was $369.6 million. Revenue recognized for the three months ended December 30, 2022 that was included in the contract liability balance on September 30, 2022 was $330.3 million. Remaining Performance Obligation The Company’s remaining performance obligations as of December 29, 2023 represent a measure of the total dollar value of work to be performed on contracts awarded and in progress. The Company had approximately $17.7 billion in remaining performance obligations as of December 29, 2023. The Company expects to recognize approximately 56% of its remaining performance obligations into revenue within the next twelve months and the remaining 44% thereafter. The majority of the remaining performance obligations after the first twelve months are expected to be recognized over a four year period. Although our remaining performance obligations reflect business volumes that are considered to be firm, normal business activities including scope adjustments, deferrals or cancellations may occur that impact volume or expected timing of their recognition. Remaining performance obligations are adjusted to reflect any known project cancellations, revisions to project scope and cost, foreign currency exchange fluctuations and project deferrals, as appropriate.

v3.24.0.1

Earnings Per Share and Certain Related Information	3 Months Ended
	Dec. 29, 2023
Earnings Per Share Reconciliation [Abstract]
Earnings Per Share and Certain Related Information	Earnings Per Share and Certain Related Information Basic and diluted earnings per share (“EPS”) are computed using the two-class method, which is an earnings allocation method that determines EPS for common shares and participating securities. The undistributed earnings are allocated between common shares and participating securities as if all earnings had been distributed during the period. Participating securities and common shares have equal rights to undistributed earnings. Net earnings used for the purpose of determining basic and diluted EPS is determined by taking net earnings, less earnings available to participating securities and the preferred redeemable noncontrolling interests redemption value adjustment associated with the PA Consulting transaction. The following table reconciles the denominator used to compute basic EPS to the denominator used to compute diluted EPS for the three months ended December 29, 2023 and December 30, 2022 (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Numerator for Basic and Diluted EPS: Net earnings attributable to Jacobs from continuing operations $ 172,184  $ 136,355  Preferred Redeemable Noncontrolling interests redemption value adjustment (See Note 15- PA Consulting Redeemable Noncontrolling Interests) 1,766  —  Net earnings from continuing operations allocated to common stock for EPS calculation $ 173,950  $ 136,355  Net loss from discontinued operations allocated to common stock for EPS calculation $ (574) $ (708) Net earnings allocated to common stock for EPS calculation $ 173,376  $ 135,647  Denominator for Basic and Diluted EPS: Shares used for calculating basic EPS attributable to common stock 126,105  126,824  Effect of dilutive securities: Stock compensation plans 708  672  Shares used for calculating diluted EPS attributable to common stock 126,813  127,496  Net Earnings Per Share: Basic Net Earnings from Continuing Operations Per Share $ 1.38  $ 1.08  Basic Net Loss from Discontinued Operations Per Share $ —  $ (0.01) Basic Earnings Per Share $ 1.37  $ 1.07  Diluted Net Earnings from Continuing Operations Per Share $ 1.37  $ 1.07  Diluted Net Loss from Discontinued Operations Per Share $ —  $ (0.01) Diluted Earnings Per Share $ 1.37  $ 1.06  Note: Per share amounts may not add due to rounding. Share Repurchases On January 16, 2020, the Company's Board of Directors authorized a share repurchase program of up to $1.0 billion of the Company's common stock (the "2020 Repurchase Authorization"). The 2020 Repurchase Authorization expired on January 15, 2023. On January 25, 2023, the Company's Board of Directors authorized an incremental share repurchase program of up to $1.0 billion of the Company's common stock, to expire on January 25, 2026 (the "2023 Repurchase Authorization"). At December 29, 2023, the Company has $774.8 million remaining under the 2023 Repurchase Authorization. The following table summarizes repurchase activity under the 2023 Repurchase Authorization through the first fiscal quarter of 2024: Amount Authorized (2023 Repurchase Authorization) Average Price Per Share (1) Total Shares Retired Shares Repurchased $1,000,000,000 $126.80 788,758 788,758 (1)Includes commissions paid and calculated at the average price per share Our share repurchase program does not obligate the Company to purchase any shares. Share repurchases may be executed through various means including, without limitation, accelerated share repurchases, open market transactions, privately negotiated transactions, purchases pursuant to Rule 10b5-1 plans or otherwise. The authorization for the share repurchase programs may be terminated, increased or decreased by the Company’s Board of Directors in its discretion at any time. The timing, amount and manner of share repurchases may depend upon market conditions and economic circumstances, availability of investment opportunities, the availability and costs of financing, currency fluctuations, the market price of the Company's common stock, other uses of capital and other factors. Dividends On January 25, 2024, the Company’s Board of Directors declared a quarterly dividend of $0.29 per share of the Company’s common stock to be paid on March 22, 2024, to shareholders of record on the close of business on February 23, 2024. Future dividend declarations are subject to review and approval by the Company’s Board of Directors. Dividends paid through the first fiscal quarter of 2024 and the preceding fiscal year are as follows: Declaration Date Record Date Payment Date Cash Amount (per share) September 28, 2023 October 27, 2023 November 9, 2023 $0.26 July 6, 2023 July 28, 2023 August 25, 2023 $0.26 April 27, 2023 May 26, 2023 June 23, 2023 $0.26 January 25, 2023 February 24, 2023 March 24, 2023 $0.26 September 15, 2022 September 30, 2022 October 28, 2022 $0.23

v3.24.0.1

Goodwill and Intangibles	3 Months Ended
	Dec. 29, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangibles	Goodwill and Intangibles The carrying value of goodwill appearing in the accompanying Consolidated Balance Sheets at December 29, 2023 and September 29, 2023 was as follows (in thousands): Critical Mission Solutions People & Places Solutions Divergent Solutions PA Consulting Total Balance September 29, 2023 $ 2,244,985  $ 3,208,193  $ 595,712  $ 1,294,636  $ 7,343,526  Foreign currency translation and other 6,530  8,954  1,733  60,655  77,872  Balance December 29, 2023 $ 2,251,515  $ 3,217,147  $ 597,445  $ 1,355,291  $ 7,421,398  The following table provides certain information related to the Company’s acquired intangibles in the accompanying Consolidated Balance Sheets at December 29, 2023 and September 29, 2023 (in thousands): Customer Relationships, Contracts and Backlog Developed Technology Trade Names Total Balance September 29, 2023 $ 1,022,401  $ 74,791  $ 174,751  $ 1,271,943  Amortization (44,602) (3,971) (2,546) (51,119) Foreign currency translation and other 25,655  244  21,606  47,505  Balance December 29, 2023 $ 1,003,454  $ 71,064  $ 193,811  $ 1,268,329  The following table presents estimated amortization expense of intangible assets for the remainder of fiscal 2024 and for the succeeding years. Fiscal Year (in millions) 2024 $ 158.5  2025 211.0  2026 187.8  2027 155.3  2028 144.4  Thereafter 411.3  Total $ 1,268.3

v3.24.0.1

Receivables and Contract Assets	3 Months Ended
	Dec. 29, 2023
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Receivables and Contract Assets	Receivables and Contract Assets The following table presents the components of receivables and contract assets appearing in the accompanying Consolidated Balance Sheets at December 29, 2023 and September 29, 2023, as well as certain other related information (in thousands): December 29, 2023 September 29, 2023 Components of receivables and contract assets: Amounts billed, net $ 1,546,936  $ 1,457,334  Unbilled receivables and other 1,443,568  1,442,486  Contract assets 686,004  658,986  Total receivables and contract assets, net $ 3,676,508  $ 3,558,806  Other information about receivables: Amounts due from the United States federal government, included above, net of contract liabilities $ 789,949  $ 802,566  Amounts billed, net consist of amounts invoiced to clients in accordance with the terms of our client contracts and are shown net of an allowance for doubtful accounts. We anticipate that substantially all of such billed amounts will be collected over the next twelve months. Unbilled receivables and other, which represent an unconditional right to payment subject only to the passage of time, are reclassified to amounts billed when they are billed under the terms of the contract. We anticipate that substantially all of such unbilled amounts will be billed and collected over the next twelve months. Contract assets represent unbilled amounts where the right to payment is subject to more than merely the passage of time and includes performance-based incentives and services that have been provided in advance of agreed contractual milestones. Contract assets are transferred to unbilled receivables when the right to consideration becomes unconditional and are transferred to amounts billed upon invoicing.

v3.24.0.1

Accumulated Other Comprehensive Income	3 Months Ended
	Dec. 29, 2023
Equity [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income The following table presents the Company's roll forward of accumulated other comprehensive income (loss) after-tax as of December 29, 2023 (in thousands): Change in Net Pension Obligation Foreign Currency Translation Adjustment (1) Gain/(Loss) on Cash Flow Hedges (2) Total Balance at September 29, 2023 $ (325,692) $ (635,937) $ 103,675  $ (857,954) Other comprehensive (loss) income (11,215) 108,048  (10,785) 86,048  Reclassifications from accumulated other comprehensive income (loss) —  —  (9,685) (9,685) Balance at December 29, 2023 $ (336,907) $ (527,889) $ 83,205  $ (781,591) (1) Included in the overall foreign currency translation adjustment for the three months ended December 29, 2023 and December 30, 2022 are $(37.7) million and $(74.9) million, respectively in unrealized gains (losses) on long-term foreign currency denominated intercompany loans not anticipated to be settled in the foreseeable future. (2) Included in the Company’s cumulative net unrealized gains from interest rate and cross currency swaps recorded in accumulated other comprehensive income as of December 29, 2023 were approximately $19.1 million in unrealized gains, net of taxes, which are expected to be realized in earnings during the twelve months subsequent to December 29, 2023.

v3.24.0.1

Income Taxes	3 Months Ended
	Dec. 29, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes                  The Company’s effective tax rates from continuing operations for the three months ended December 29, 2023 and December 30, 2022 were (9.8)% and 25.4%, respectively. The most significant item contributing to the difference between the statutory U.S. federal corporate tax rate of 21.0% and the Company's effective tax rate for the three-month period ended December 29, 2023 relates to a discrete event associated with the election to treat an Australian subsidiary as a corporation versus a partnership for U.S. tax purposes. The election resulted in the derecognition of a deferred tax liability, resulting in a discrete income tax benefit of $61.6 million as the Company asserts that a component of the investment will be indefinitely reinvested. This benefit was partly offset by U.S. state income tax expense of $3.2 million and U.S. tax on foreign earnings of $3.2 million. These expense items are expected to have a continuing impact on the Company's effective tax rate for the remainder of the fiscal year.                  The most significant items contributing to the difference between the statutory U.S. federal corporate tax rate of 21.0% and the Company's effective tax rate for the three months ended December 30, 2022, were U.S. state income tax expense of $4.6 million and U.S. tax on foreign earnings of $3.6 million. The amount of income taxes the Company pays is subject to ongoing audits by tax jurisdictions around the world. In the normal course of business, the Company is subject to examination by tax authorities throughout the world, including such major jurisdictions as Australia, Canada, India, the Netherlands, the United Kingdom and the United States. Our estimate of the potential outcome of any uncertain tax issue is subject to our assessment of the relevant risks, facts, and circumstances existing at the time. The Company believes that it has adequately provided for reasonably foreseeable outcomes related to these matters. However, future results may include favorable or unfavorable adjustments to our estimated tax liabilities in the period the assessments are made or resolved, which may impact our effective tax rate.

v3.24.0.1

Joint Ventures, VIEs and Other Investments	3 Months Ended
	Dec. 29, 2023
Equity Method Investments and Joint Ventures [Abstract]
Joint Ventures, VIEs and Other Investments	Joint Ventures, VIEs and Other Investments For the Company's consolidated variable interest entities ("VIE") joint ventures, the carrying value of assets and liabilities was $409.8 million and $256.4 million, respectively, as of December 29, 2023 and $424.2 million and $279.8 million, respectively, as of September 29, 2023. There are no consolidated VIEs that have debt or credit facilities. For the Company's proportionate consolidated VIEs, the carrying value of assets and liabilities was $146.1 million and $138.2 million, respectively, as of December 29, 2023, and $132.0 million and $128.9 million, respectively, as of September 29, 2023. The carrying values of our investments in equity method joint ventures in the Consolidated Balance Sheets (reported in Other Noncurrent Assets: Miscellaneous) as of December 29, 2023 and September 29, 2023 were $48.1 million and $49.6 million, respectively. Additionally, income from equity method joint ventures (reported in Revenue) was $10.3 million and $10.0 million, respectively, during the three months ended December 29, 2023 and December 30, 2022. As of December 29, 2023, the Company's equity method investment carrying values do not include material amounts exceeding their share of the respective joint ventures' reported net assets. Accounts receivable from unconsolidated joint ventures accounted for under the equity method was $12.0 million and $16.1 million as of December 29, 2023 and September 29, 2023, respectively.

v3.24.0.1

Borrowings	3 Months Ended
	Dec. 29, 2023
Debt Disclosure [Abstract]
Borrowings	Borrowings At December 29, 2023 and September 29, 2023, long-term debt consisted of the following (principal amounts in thousands): Interest Rate Maturity December 29, 2023 September 29, 2023 Revolving Credit Facility Benchmark + applicable margin (1) (2) February 2028 $ —  $ 10,000  2021 Term Loan Facility - USD Portion Benchmark + applicable margin (1) (3) February 2026 120,000  120,000  2021 Term Loan Facility - GBP Portion Benchmark + applicable margin (1) (3) September 2025 829,075  794,170  2020 Term Loan Facility Benchmark + applicable margin (1) (4) March 2025 (6) 852,210  854,246  Fixed-rate: 5.9% Bonds, due 2033 5.9% (5) March 2033 500,000  500,000  6.35% Bonds, due 2028 6.35% August 2028 600,000  600,000  Less: Current Portion (6) (52,444) (51,773) Less: Deferred Financing Fees (13,961) (13,172) Total Long-term debt, net $ 2,834,880  $ 2,813,471  (1)During the year ended September 29, 2023, the aggregate principal amounts denominated in U.S. dollars under the Revolving Credit Facility, the 2021 Term Loan Facility and the 2020 Term Loan Facility (each as defined below) transitioned from underlying LIBOR benchmarked rates to the Term Secured Overnight Financing Rate ("SOFR"). During fiscal 2022, the aggregate principal amounts denominated in British pounds under the Revolving Credit Facility, 2021 Term Loan Facility and 2020 Term Loan Facility transitioned from underlying LIBOR benchmarked rates to Sterling Overnight Index Average ("SONIA") rates. (2)Depending on the Company’s Consolidated Leverage Ratio or Debt Rating (each as defined in the Revolving Credit Facility (defined below)), U.S. dollar denominated borrowings under the Revolving Credit Facility bear interest at either a SOFR rate plus a margin of between 0.975% and 1.725% or a base rate plus a margin of between 0% and 0.625%. The applicable SOFR rates, or LIBOR rate for the prior fiscal year end, including applicable margins at December 29, 2023 and September 29, 2023 were approximately 6.70% and 8.75%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.908% and 1.658%. There were no amounts drawn in British pounds as of December 29, 2023. (3)Depending on the Company’s Consolidated Leverage Ratio or Debt Rating (each as defined in the Amended and Restated Term Loan Agreement (defined below)), U.S. dollar denominated borrowings under the 2021 Term Loan Facility bear interest at either a SOFR rate plus a margin of between 0.975% and 1.725% or a base rate plus a margin of between 0% and 0.625%. The applicable SOFR, or LIBOR rate for the prior fiscal year end, including applicable margins for borrowings denominated in U.S. dollars at December 29, 2023 and September 29, 2023 was approximately 6.70% and 6.68%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.908% and 1.658%, which was approximately 6.47% and 6.47% at December 29, 2023 and September 29, 2023, respectively. (4)Depending on the Company’s Consolidated Leverage Ratio or Debt Rating (each as defined in the 2020 Term Loan Agreement), U.S. dollar denominated borrowings under the 2020 Term Loan Facility bear interest at either a SOFR rate plus a margin of between 0.975% and 1.725% or a base rate plus a margin of between 0% and 0.625%. The applicable SOFR, or LIBOR rate for the prior fiscal year end, including applicable margins for borrowings denominated in U.S. dollars at December 29, 2023 and September 29, 2023 were approximately 6.70% and 6.68%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.908% and 1.658%, which was approximately 6.47% and 6.47% at December 29, 2023 and September 29, 2023, respectively. (5)From and including September 1, 2028 (the “First Step Up Date”), the interest rate payable on the 5.90% Bonds (as defined below) will be increased by an additional 12.5 basis points to 6.025% per annum (the “First Step Up Interest Rate”) unless the Company notifies the Trustee (as defined below) on or before the date that is 15 days prior to the First Step Up Date that the Percentage of Gender Diversity Performance Target (as defined in the First Supplemental Indenture (as defined below)) has been satisfied and receives a related assurance letter verifying such compliance. From and including September 1, 2030 (the “Second Step Up Date”), the interest rate payable on the 5.90% Bonds will be increased by 12.5 basis points to (x) 6.150% per annum if the First Step Up Interest Rate was in effect immediately prior to the Second Step Up Date or (y) 6.025% per annum if the initial interest rate was in effect immediately prior to the Second Step Up Date, unless the Company notifies the Trustee on or before the date that is 15 days prior to the Second Step Up Date that the GHG Emissions Performance Target (as defined in the First Supplemental Indenture) has been satisfied and receives a related assurance letter verifying such compliance. (6)The current portion of long-term debt is comprised primarily of the 2020 Term Loan Facility quarterly principal repayments of 1.25%, or $9.125 million and £3.125 million, of the aggregate initial principal amount borrowed. Revolving Credit Facility and Term Loans The Company and certain of its subsidiaries maintain a sustainability-linked $2.25 billion unsecured revolving credit facility (the “Revolving Credit Facility”) established under a third amended and restated credit agreement, dated February 6, 2023 (the "Revolving Credit Agreement"), among Jacobs and certain of its subsidiaries as borrowers and a syndicate of U.S. and international banks and financial institutions. The credit extensions under the Revolving Credit Facility can be funded in U.S dollars, British Sterling, Euros, Canadian dollars, Australian dollars, Swedish Krona, Singapore dollars and other agreed upon alternative currencies. The Revolving Credit Agreement also provides for a financial letter of credit sub facility of $400.0 million, permits performance letters of credit, and provides for a $100.0 million sub facility for swing line loans. Letters of credit are subject to fees based on the Company’s Consolidated Leverage Ratio and Debt Rating, whichever is more favorable to the Company. The Revolving Credit Agreement amended and restated the second amended and restated credit agreement dated March 27, 2019, by and among JEGI and certain of its subsidiaries and a syndicate of banks and financial institutions, in order to, among other things, (a) extend the maturity date of the Revolving Credit Facility to February 6, 2028, (b) replace and adjust interest rates based on market conditions and incorporate a sustainability-linked pricing adjustment, (c) revise the commitment fee on the unused portion of the facility to a range of 0.10% to 0.25% depending on the higher of the pricing level associated with JEGI's Debt Rating or the Consolidated Leverage Ratio, (d) increase the Consolidated Leverage Ratio financial covenant to 3.50:1.00 (subject to temporary increases to 4.00:1.00 following the closing of certain material acquisitions), (e) eliminate the net worth financial covenant and (f) add the Company as a guarantor of the obligations of JEGI and its subsidiaries under the Revolving Credit Agreement. The Company and JEGI maintain an unsecured delayed draft term loan facility (the “2021 Term Loan Facility”) established under an amended and restated term loan agreement dated February 6, 2023 (the "Amended and Restated Term Loan Agreement"), by and among the Company and JEGI and a syndicate of banks and financial institutions. JEGI borrowed $200.0 million and £650.0 million of term loans under the 2021 Term Loan Facility and the proceeds of such term loans were used primarily to fund JEGI's investment in PA Consulting. The Amended and Restated Term Loan Agreement amended and restated the term loan agreement dated January 15, 2021, by and among JEGI and a syndicate of U.S. banks and financial institutions to, among other things: (a) extend the maturity date of the U.S. dollar term loan to February 6, 2026 and the British sterling term loan to September 1, 2025, (b) replace and adjust interest rates based on market conditions and incorporate a sustainability-linked pricing adjustment, (c) increase the Consolidated Leverage Ratio financial covenant to 3.50:1.00 (subject to temporary increases to 4.00:1.00 following the closing of certain material acquisitions), (d) eliminate the net worth financial covenant, and (e) add Jacobs as a guarantor of the obligations of JEGI under the Amended and Restated Term Loan Agreement. During the fourth quarter of fiscal 2023, the Company repaid $80.0 million of the USD portion of the 2021 Term Loan Facility. On March 25, 2020, JEGI and Jacobs U.K., a wholly owned subsidiary of JEGI, entered into a term loan agreement (the "2020 Term Loan Agreement") with a syndicate of banks and financial institutions, which provides for an unsecured term loan facility (the “2020 Term Loan Facility”). Under the 2020 Term Loan Facility, JEGI borrowed an aggregate principal amount of $730.0 million and Jacobs U.K. borrowed an aggregate principal amount of £250.0 million. The proceeds of the term loans were used to repay an existing term loan with a maturity date of June 2020 and for general corporate purposes. On February 6, 2023, the 2020 Term Loan Agreement was amended to, among other things: (a) replace and adjust interest rates based on market conditions and incorporate a sustainability-linked pricing adjustment, (b) increase the Consolidated Leverage Ratio financial covenant to 3.50:1.00 (subject to temporary increases to 4.00:1.00 following the closing of certain material acquisitions), (c) eliminate the net worth financial covenant, and (d) add Jacobs as a guarantor of the obligations of JEGI and Jacobs U.K. The 2020 Term Loan Facility and the 2021 Term Loan Facility are together referred to as the "Term Loan Facilities". In the fourth quarter of fiscal 2022, the Revolving Credit Facility and Term Loan Facilities were amended to permit the Holding Company Reorganization. On December 20, 2023, the Revolving Credit Facility and Term Loan Facilities were amended to fix the point in time at which certain compliance thresholds are tested in connection with the Separation Transaction. We were in compliance with the covenants under the Revolving Credit Facility and Term Loan Facilities at December 29, 2023. 5.90% Bonds, due 2033 On February 16, 2023, JEGI completed an offering of $500 million aggregate principal amount of 5.90% Bonds due 2033 (the “5.90% Bonds”). The 5.90% Bonds are fully and unconditionally guaranteed by the Company (the “5.90% Bonds Guarantee”). The 5.90% Bonds and the 5.90% Bonds Guarantee were offered pursuant to a prospectus supplement, dated February 13, 2023, to the prospectus dated February 6, 2023, that forms a part of the Company's and JEGI’s automatic shelf registration statement on Form S-3ASR previously filed with the SEC, and were issued pursuant to an Indenture, dated as of February 16, 2023, between JEGI, as issuer, the Company, as guarantor, and U.S. Bank Trust Company, National Association, as trustee (the “Trustee”), as amended and supplemented by the First Supplemental Indenture, dated as of February 16, 2023 (the “First Supplemental Indenture”). Interest on the 5.90% Bonds is payable semi-annually in arrears on each March 1 and September 1, commencing on September 1, 2023, until maturity. The 5.90% Bonds bear interest at 5.90% per annum, subject to adjustments as discussed in note (5) to the table above. Prior to December 1, 2032 (the “5.90% Bonds Par Call Date”), JEGI may redeem the 5.90% Bonds at its option, in whole or in part, at any time and from time to time, at the redemption price calculated by JEGI (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of: (1) (a) the sum of the present values of the remaining scheduled payments of principal and interest on the 5.90% Bonds being redeemed, assuming that such 5.90% Bonds matured on the 5.90% Bonds Par Call Date, discounted to the redemption date on a semiannual basis (assuming a 360-day year of twelve 30-day months), at the Treasury Rate (as defined in the First Supplemental Indenture) plus 35 basis points, less (b) interest accrued to the redemption date, and (2) 100% of the principal amount of such 5.90% Bonds to be redeemed, plus, in either case, accrued and unpaid interest on the 5.90% Bonds, if any, to, but excluding, the redemption date. At any time and from time to time on or after the 5.90% Bonds Par Call Date, JEGI may redeem the 5.90% Bonds, at its option, in whole or in part, at a redemption price equal to 100% of the principal amount of the 5.90% Bonds to be redeemed, plus accrued and unpaid interest thereon, if any, up to, but excluding, the redemption date. 6.35% Bonds, due 2028 On August 18, 2023, JEGI completed an offering of $600 million aggregate principal amount of 6.35% Bonds due 2028 (the “6.35% Bonds”). The 6.35% Bonds are fully and unconditionally guaranteed by the Company (the “6.35% Bonds Guarantee”). The 6.35% Bonds and the 6.35% Bonds Guarantee were offered pursuant to a prospectus supplement, dated August 15, 2023, to the prospectus dated February 6, 2023, that forms a part of the Company and JEGI’s automatic shelf registration statement on Form S-3ASR previously filed with the SEC, and were issued pursuant to the Indenture, as amended and supplemented by the Second Supplemental Indenture, dated as of August 18, 2023 (the “Second Supplemental Indenture”). Interest on the 6.35% Bonds is payable semi-annually in arrears on each February 18 and August 18, commencing on February 18, 2024, until maturity. The Notes will bear interest at a rate of 6.35% per annum and will mature on August 18, 2028. The 6.35% Bonds bear interest at 6.35% per annum. Prior to July 18, 2028 (the “6.35% Bonds Par Call Date”), JEGI may redeem the 6.35% Bonds at its option, in whole or in part, at any time and from time to time, at the redemption price calculated by JEGI (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of: (1) (a) the sum of the present values of the remaining scheduled payments of principal and interest on the 6.35% Bonds being redeemed, assuming that such 6.35% Bonds matured on the 6.35% Bonds Par Call Date, discounted to the redemption date on a semiannual basis (assuming a 360-day year of twelve 30-day months), at the Treasury Rate (as defined in the Second Supplemental Indenture) plus 30 basis points, less (b) interest accrued to the redemption date, and (2) 100% of the principal amount of such 6.35% Bonds to be redeemed, plus, in either case, accrued and unpaid interest on the 6.35% Bonds, if any, to, but excluding, the redemption date. At any time and from time to time on or after the 6.35% Bonds Par Call Date, JEGI may redeem the 6.35% Bonds, at its option, in whole or in part, at a redemption price equal to 100% of the principal amount of the 6.35% Bonds to be redeemed, plus accrued and unpaid interest thereon, if any, to, but excluding, the redemption date. Other arrangements During fiscal 2022, the Company entered into two treasury lock agreements with an aggregate notional value of $500.0 million to manage its expected interest rate exposure in anticipation of issuing up to $500.0 million of fixed rate debt. On February 13, 2023 and with the issuance of the 5.90% Bonds, the Company settled these treasury lock agreements. See Note 17- Commitments and Contingencies and Derivative Financial Instruments for more discussion around this transaction. During fiscal 2020, the Company entered into interest rate and cross currency derivative contracts to swap a portion of our variable rate debt to fixed rate debt. See Note 17- Commitments and Contingencies and Derivative Financial Instruments for discussion regarding the Company's derivative instruments. The Company has issued $0.9 million in letters of credit under the Revolving Credit Facility, leaving $2.25 billion of available borrowing capacity under the Revolving Credit Facility at December 29, 2023. In addition, the Company had issued $310.7 million under separate, committed and uncommitted letter-of-credit facilities for total issued letters of credit of $311.5 million at December 29, 2023.

v3.24.0.1

Leases	3 Months Ended
	Dec. 29, 2023
Leases [Abstract]
Leases	Leases The components of lease expense (reflected in selling, general and administrative expenses) for the three months ended December 29, 2023 and December 30, 2022 were as follows (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Lease expense Operating lease expense $ 34,200  $ 35,282  Variable lease expense 9,337  9,346  Sublease income (4,711) (4,406) Total lease expense $ 38,826  $ 40,222  Supplemental information related to the Company's leases for the three months ended December 29, 2023 and December 30, 2022 was as follows (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Cash paid for amounts included in the measurements of lease liabilities $ 47,413 $ 45,770 Right-of-use assets obtained in exchange for new operating lease liabilities $ 8,384 $ 29,801 Weighted average remaining lease term - operating leases 5.8 years 6.2 years Weighted average discount rate - operating leases 3.4% 3.0% Total remaining lease payments under the Company's leases for the remainder of fiscal 2024 and for the succeeding years is as follows (in thousands): Fiscal Year Operating Leases 2024 $ 131,023  2025 146,078  2026 122,727  2027 100,231  2028 82,567  Thereafter 160,807  743,433  Less Interest (68,291) $ 675,142  Right-of-Use and Other Long-Lived Asset Impairment During fiscal 2023, as a result of the Company's transformation initiatives, including the changing nature of the Company's use of office space for its workforce, the Company evaluated its existing real estate lease portfolio. These initiatives resulted in the abandonment of certain leased office spaces and the establishment of a formal plan to sublease certain other leased spaces that will no longer be utilized by the Company. In connection with the Company’s actions related to these initiatives, the Company evaluated certain of its lease right-of-use assets and related property, equipment and leasehold improvements for impairment under ASC 360. As a result of this analysis, the Company recognized impairment losses during the first quarter of fiscal 2023 of $27.1 million, which is included in selling, general and administrative expenses in the accompanying statement of earnings. The impairment losses include $24.3 million related to right-of-use lease assets and $2.8 million related to other long-lived assets, including property, equipment and improvements and leasehold improvements for the fiscal 2023 period. The fair values for the asset groups relating to the impaired long-lived assets were estimated primarily using discounted cash flow models (income approach) with Level 3 inputs. The significant assumptions used in estimating fair value include the expected downtime prior to the commencement of future subleases, projected sublease income over the remaining lease periods and discount rates that reflect the level of risk associated with receiving future cash flows.
Leases	Leases The components of lease expense (reflected in selling, general and administrative expenses) for the three months ended December 29, 2023 and December 30, 2022 were as follows (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Lease expense Operating lease expense $ 34,200  $ 35,282  Variable lease expense 9,337  9,346  Sublease income (4,711) (4,406) Total lease expense $ 38,826  $ 40,222  Supplemental information related to the Company's leases for the three months ended December 29, 2023 and December 30, 2022 was as follows (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Cash paid for amounts included in the measurements of lease liabilities $ 47,413 $ 45,770 Right-of-use assets obtained in exchange for new operating lease liabilities $ 8,384 $ 29,801 Weighted average remaining lease term - operating leases 5.8 years 6.2 years Weighted average discount rate - operating leases 3.4% 3.0% Total remaining lease payments under the Company's leases for the remainder of fiscal 2024 and for the succeeding years is as follows (in thousands): Fiscal Year Operating Leases 2024 $ 131,023  2025 146,078  2026 122,727  2027 100,231  2028 82,567  Thereafter 160,807  743,433  Less Interest (68,291) $ 675,142  Right-of-Use and Other Long-Lived Asset Impairment During fiscal 2023, as a result of the Company's transformation initiatives, including the changing nature of the Company's use of office space for its workforce, the Company evaluated its existing real estate lease portfolio. These initiatives resulted in the abandonment of certain leased office spaces and the establishment of a formal plan to sublease certain other leased spaces that will no longer be utilized by the Company. In connection with the Company’s actions related to these initiatives, the Company evaluated certain of its lease right-of-use assets and related property, equipment and leasehold improvements for impairment under ASC 360. As a result of this analysis, the Company recognized impairment losses during the first quarter of fiscal 2023 of $27.1 million, which is included in selling, general and administrative expenses in the accompanying statement of earnings. The impairment losses include $24.3 million related to right-of-use lease assets and $2.8 million related to other long-lived assets, including property, equipment and improvements and leasehold improvements for the fiscal 2023 period. The fair values for the asset groups relating to the impaired long-lived assets were estimated primarily using discounted cash flow models (income approach) with Level 3 inputs. The significant assumptions used in estimating fair value include the expected downtime prior to the commencement of future subleases, projected sublease income over the remaining lease periods and discount rates that reflect the level of risk associated with receiving future cash flows.

v3.24.0.1

Pension and Other Postretirement Benefit Plans	3 Months Ended
	Dec. 29, 2023
Retirement Benefits [Abstract]
Pension and Other Postretirement Benefit Plans	Pension and Other Postretirement Benefit Plans The following table presents the components of net periodic pension benefit expense recognized in earnings during the three months ended December 29, 2023 and December 30, 2022 (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Component: Service cost $ 2,261  $ 1,748  Interest cost 21,560  20,233  Expected return on plan assets (23,726) (21,091) Amortization of previously unrecognized items 1,949  1,304  Total net periodic pension benefit expense recognized $ 2,044  $ 2,194  The service cost component of net periodic pension benefit is presented in the same line item as other compensation costs (direct cost of contracts and selling, general and administrative expenses) and the other components of net periodic pension expense are presented in miscellaneous income (expense), net on the Consolidated Statements of Earnings. The following table presents certain information regarding the Company’s cash contributions to our pension plans for fiscal 2024 (in thousands): Cash contributions made during the first three months of fiscal 2024 $ 5,297  Cash contributions projected for the remainder of fiscal 2024 13,984  Total $ 19,281

v3.24.0.1

PA Consulting Redeemable Noncontrolling Interests	3 Months Ended
	Dec. 29, 2023
PA Consulting Group Limited
Business Acquisition [Line Items]
PA Consulting Redeemable Noncontrolling Interests	PA Consulting Redeemable Noncontrolling Interests On March 2, 2021, Jacobs completed the strategic investment of a 65% interest in PA Consulting, a UK-based leading innovation and transformation consulting firm. PA Consulting is accounted for as a consolidated subsidiary and as a separate operating segment. In connection with the PA Consulting investment, the Company recorded redeemable noncontrolling interests, including subsequent purchase accounting adjustments, representing the noncontrolling interest holders' equity interests in the form of preferred and common shares of PA Consulting, with substantially all of the value associated with these interests allocable to the preferred shares. During the first quarter of 2024, PA Consulting repurchased certain shares of the redeemable noncontrolling interest holders for $24.4 million in cash. The difference between the cash purchase prices and the recorded book values of these repurchased interests was recorded in the Company’s consolidated retained earnings. The Company held 70% and 69% of the outstanding ownership of PA Consulting as of December 29, 2023 and September 29, 2023, respectively. During the first quarter of 2024 the Company recognized approximately $1.8 million in redemption value adjustments associated with redeemable noncontrolling interests preference share repurchase and reissuance activities that were recorded as an increase in consolidated retained earnings and a $0.01 increase in earnings per share, the results of which had no impact on the Company’s overall results of operations, financial position or cash flows. See Note 6- Earnings Per Share and Certain Related Information for more information. Changes in the redeemable noncontrolling interests during the three months ended December 29, 2023 are as follows (in thousands): Balance at September 29, 2023 $ 632,979  Accrued Preferred Dividend to Preference Shareholders 19,285  Attribution of Preferred Dividend to Common Shareholders (19,285) Net earnings attributable to redeemable noncontrolling interests to Common Shareholders 2,618  Redeemable Noncontrolling interests redemption value adjustment 25,718  Repurchase of redeemable noncontrolling interests (26,258) Cumulative translation adjustment and other 19,019  Balance at December 29, 2023 $ 654,076  In addition, certain employees and non-employees of PA Consulting are eligible to receive equity-based incentive grants in the future under the terms of the applicable agreements. During the first quarter of fiscal 2024 and 2023, the Company recorded $1.6 million and $4.3 million, respectively, in expenses associated with these agreements which is reflected in selling, general and administrative expenses in the consolidated statements of earnings. The Company, through its investment in PA Consulting, held $1.0 million and $2.8 million at December 29, 2023 and September 29, 2023, respectively, in cash that is restricted from general use and is included in Prepaid expenses and other on the Consolidated Balance Sheets.

v3.24.0.1

Restructuring and Other Charges	3 Months Ended
	Dec. 29, 2023
Restructuring and Related Activities [Abstract]
Restructuring and Other Charges	Restructuring and Other Charges During fiscal 2023, the Company implemented restructuring and separation initiatives relating to the Separation Transaction which are expected to continue through fiscal 2025. Restructuring initiatives were also implemented during fiscal 2023 relating to our investment in PA Consulting, which is expected to continue through fiscal 2024, and the DVS segment reorganization, which is substantially completed. While restructuring activities for each of these programs are comprised mainly of employee termination costs, the separation activities and costs are primarily related to the engagement of outside services and internal personnel and other related costs dedicated to the Company’s Separation Transaction. During fiscal 2022, the Company implemented certain restructuring and integration initiatives relating to the acquisitions of (i) BlackLynx, Inc. (“BlackLynx”) in November 2021, and (ii) StreetLight Data, Inc. (“StreetLight”) in February 2022. Also, during fiscal 2022 and continuing into fiscal 2023, the Company implemented further real estate rescaling efforts that were associated with its fiscal 2020 transformation program relating to real estate and other staffing initiatives. These initiatives are substantially complete. During the fiscal year ended October 1, 2021, the Company recorded other-than-temporary impairment charges on its equity method investment in AWE Management Ltd (“AWE”) which were included in miscellaneous income (expense), net in the consolidated statement of earnings. During fiscal year 2022, the contractual operating arrangement with UK Ministry of Defence was terminated which has resulted in the wind down and full impairment of the AWE Joint Venture with immaterial activity expected going forward. During fiscal 2021, the Company implemented certain integration initiatives associated with our PA Consulting investment. The activities are substantially completed. During fiscal 2019 and continuing into fiscal 2020, the Company implemented certain restructuring and separation initiatives associated with the ECR sale and other related cost reduction initiatives. The restructuring activities and related costs were comprised mainly of separation and lease abandonment and sublease programs, while the separation activities and costs were mainly related to the engagement of consulting services and internal personnel and other related costs dedicated to the Company’s ECR-business separation. The activities of these initiatives have been substantially completed. As part of the Company's acquisition of CH2M Hill Companies, Ltd. ("CH2M") during fiscal 2018, the Company implemented certain restructuring plans that were comprised mainly of severance and lease abandonment programs as well as integration activities involving the engagement of professional services and internal personnel dedicated to the Company's integration management efforts. The activities of these initiatives have been substantially completed. Collectively, the above-mentioned restructuring activities are referred to as “Restructuring and other charges.” The following table summarizes the impacts of the Restructuring and other charges by reportable segment in connection with the Separation Transaction, PA Consulting investment, DVS segment reorganization, StreetLight and BlackLynx acquisitions, the Company’s transformation initiatives relating to real estate and other staffing programs, the ECR sale, and CH2M acquisition for the three months ended December 29, 2023 and December 30, 2022 (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Critical Mission Solutions $ 2,163  $ 2,212  People & Places Solutions 8,129  27,317  Divergent Solutions 900  1,581  PA Consulting 1,175  —  Corporate 29,002  3,333  Total $ 41,369  $ 34,443  Amounts included in: Operating profit (mainly SG&A) (1) $ 41,369  $ 35,072  Other Income, net —  (629) $ 41,369  $ 34,443  (1)The three months ended December 29, 2023 included $40.1 million in restructuring and other charges mainly relating to the Separation Transaction (primarily professional services and employee separation costs). The three months ended December 30, 2022, included $27.8 million in charges associated mainly with real estate impairments and related charges. The activity in the Company’s accruals for Restructuring and other charges for the three months ended December 29, 2023 is as follows (in thousands): Balance at September 29, 2023 $ 37,318  Net Charges (Credits) (1) 41,320  Payments and other (46,145) Balance at December 29, 2023 $ 32,493  (1) Excludes other net charges associated mainly with the real estate related impairments and other transformation activities during the three months ended December 29, 2023. The following table summarizes the Restructuring and other charges by major type of costs for the three months ended December 29, 2023 and December 30, 2022 (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Lease Abandonments and Impairments $ 49  $ 26,831  Voluntary and Involuntary Terminations 11,728  6,570  Outside Services (1) 24,983  675  Other (2) 4,609  367  Total $ 41,369  $ 34,443  (1) Amounts in the three months ended December 29, 2023 are comprised of outside services relating to the Separation Transaction. (2) Amounts in the three months ended December 29, 2023 are comprised of charges relating to the Separation Transaction. Cumulative amounts incurred to date under our various Restructuring and other activities described above by each major type of cost as of December 29, 2023 are as follows (in thousands): Lease Abandonments and Impairments $ 432,773  Voluntary and Involuntary Terminations 180,044  Outside Services 370,673  Other 200,543  Total $ 1,184,033

v3.24.0.1

Commitments and Contingencies and Derivative Financial Instruments	3 Months Ended
	Dec. 29, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies and Derivative Financial Instruments	Commitments and Contingencies and Derivative Financial Instruments Derivative Financial Instruments The Company is exposed to interest rate risk under its variable rate borrowings and additionally, due to the nature of the Company's international operations, we are at times exposed to foreign currency risk. As such, we sometimes enter into foreign exchange hedging contracts and interest rate hedging contracts in order to limit our exposure to fluctuating foreign currencies and interest rates. During fiscal 2022, the Company entered into two treasury lock agreements with a total notional value of $500 million to manage its interest rate exposure to the anticipated issuance of fixed rate debt before December 2023. On February 13, 2023, the Company settled these treasury lock agreements and issued the 5.90% Bonds in the aggregate principal amount of $500 million, which resulted in the receipt of cash and a gain of $37.4 million, before tax, which is being amortized to interest expense and recognized over the term of the 5.90% Bonds. See Note 12- Borrowings for further discussion relating to the terms of the 5.90% Bonds. The unrealized net gain on these instruments was $25.8 million and $26.5 million, net of tax, and is included in accumulated other comprehensive income as of December 29, 2023 and September 29, 2023, respectively. In fiscal 2020 we entered into interest rate swap agreements with a notional value of $779.9 million as of December 29, 2023 to manage the interest rate exposure on our variable rate loans. By entering into the swap agreements, the Company converted the LIBOR and SONIA rate based liabilities into fixed rate liabilities. The fair value of the interest rate swaps at December 29, 2023 and September 29, 2023 was $76.3 million and $102.6 million respectively, which are included in miscellaneous other assets on the consolidated balance sheet. The unrealized net gain on these interest rate swaps as of December 29, 2023 and September 29, 2023 was $57.4 million and $77.2 million, respectively, net of tax, and was included in accumulated other comprehensive income. Additionally, in fiscal 2020, we entered into a cross-currency swap agreement with a notional value of $127.8 million to manage the interest rate and foreign currency exposure on our USD borrowings by a European subsidiary. By entering into the cross currency swap, our LIBOR rate based borrowing in USD to a fixed rate Euro liability, for periods ranging from three and a half to ten years. During the fourth quarter of fiscal 2023, the Company paid down the borrowings hedged by the cross currency swap and settled the cross currency swap agreement. During fiscal 2023, the aggregate liability amounts denominated in U.S. dollars transitioned from underlying LIBOR benchmarked rates to the SOFR and the terms of the swaps were amended accordingly. The swaps were designated as cash-flow hedges in accordance with ASC 815, Derivatives and Hedging. Additionally, the Company held foreign exchange forward contracts in currencies that support our operations, including British Pound, Euro, Australian Dollar and other currencies, with notional values of $964.9 million at December 29, 2023 and $857.7 million at September 29, 2023. The length of these contracts currently ranges from one week to 12 months. The fair value of the foreign exchange contracts at December 29, 2023 was $23.3 million, of which $24.8 million is included within current assets and $(1.5) million is included within accounts payable on the consolidated balance sheet as of December 29, 2023. The fair value of the contracts as of September 29, 2023 was $9.5 million, of which $16.1 million is included within current assets and $(6.6) million is included within accounts payable on the consolidated balance sheet as of September 29, 2023. Associated income statement impacts are included in miscellaneous income (expense) in the consolidated statements of earnings for both periods. The fair value measurements of these derivatives are being made using Level 2 inputs under ASC 820, Fair Value Measurement, as the measurements are based on observable inputs other than quoted prices in active markets. We are exposed to risk from credit-related losses resulting from nonperformance by counterparties to our financial instruments. We perform credit evaluations of our counterparties under forward exchange and interest rate contracts and expect all counterparties to meet their obligations. We have not experienced credit losses from our counterparties. Contractual Guarantees and Insurance In the normal course of business, we make contractual commitments (some of which are supported by separate guarantees) and on occasion we are a party in a litigation or arbitration proceeding. The litigation or arbitration in which we are involved includes personal injury claims, professional liability claims and breach of contract claims. Where we provide a separate guarantee, it is strictly in support of the underlying contractual commitment. Guarantees take various forms including surety bonds required by law, or standby letters of credit ("LOC" and also referred to as “bank guarantees”) or corporate guarantees given to induce a party to enter into a contract with a subsidiary. Standby LOCs are also used as security for advance payments or in various other transactions. The guarantees have various expiration dates ranging from an arbitrary date to completion of our work (e.g., engineering only) to completion of the overall project. We record in the Consolidated Balance Sheets amounts representing our estimated liability relating to such guarantees, litigation and insurance claims. Guarantees are accounted for in accordance with ASC 460-10, Guarantees, at fair value at the inception of the guarantee. At December 29, 2023 and September 29, 2023, the Company had issued and outstanding approximately $311.5 million and $322.0 million, respectively, in LOCs and $2.1 billion and $2.0 billion, respectively, in surety bonds. We maintain insurance coverage for most insurable aspects of our business and operations. Our insurance programs have varying coverage limits depending upon the type of insurance and include certain conditions and exclusions which insurance companies may raise in response to any claim that is asserted by or against the Company. We have also elected to retain a portion of losses and liabilities that occur through using various deductibles, limits, and retentions under our insurance programs. As a result, we may be subject to a future liability for which we are only partially insured or completely uninsured. We intend to mitigate any such future liability by continuing to exercise prudent business judgment in negotiating the terms and conditions of the contracts which the Company enters with its clients. Our insurers are also subject to business risk and, as a result, one or more of them may be unable to fulfill their insurance obligations due to insolvency or otherwise. Additionally, as a contractor providing services to the U.S. federal government, we are subject to many types of audits, investigations, and claims by, or on behalf of, the government including with respect to contract performance, pricing, cost allocations, procurement practices, labor practices, and socioeconomic obligations. Furthermore, our income, franchise, and similar tax returns and filings are also subject to audit and investigation by the Internal Revenue Service, most states within the United States, as well as by various government agencies representing jurisdictions outside the United States. Our Consolidated Balance Sheets include amounts representing our probable estimated liability relating to such claims, guarantees, litigation, audits, and investigations. We perform an analysis to determine the level of reserves to establish for insurance-related claims that are known and have been asserted against us, as well as for insurance-related claims that are believed to have been incurred based on actuarial analysis but have not yet been reported to our claims administrators as of the respective balance sheet dates. We include any adjustments to such insurance reserves in our consolidated results of operations. Insurance recoveries are recorded as assets if recovery is probable and estimated liabilities are not reduced by expected insurance recoveries. The Company believes, after consultation with counsel, that such guarantees, litigation, U.S. government contract-related audits, investigations and claims, and income tax audits and investigations should not have a material adverse effect on our consolidated financial statements, beyond amounts currently accrued. Litigation and Investigations In 2012, CH2M HILL Australia PTY Limited, a subsidiary of CH2M, entered into a 50/50 integrated joint venture with Australian construction contractor UGL Infrastructure Pty Limited. The joint venture entered into a Consortium Agreement with General Electric and GE Electrical International Inc. The Consortium was awarded a subcontract by JKC Australia LNG Pty Limited ("JKC") for the engineering, procurement, construction and commissioning of a 360 MW Combined Cycle Power Plant for INPEX Operations Australia Pty Limited at Blaydin Point, Darwin, NT, Australia (the "Legacy CH2M Matter"). The subcontract was terminated in January 2017. In or around August 2017, the Consortium commenced an arbitration. On April 12, 2022, JKC and the Consortium entered into a confidential deed of settlement (“Settlement Agreement”). Under the terms of the Settlement Agreement, CH2M, as guarantor of CH2M Australia PTY Limited’s obligations with respect to the subcontract with JKC, made a cash payment to JKC in April 2022 of AUD 640 million (or approximately $475 million using mid-April 2022 exchange rates). As a result of the settlement agreement, additional pre-tax charges of $91.3 million were recorded during the year ended September 30, 2022 for this matter (over amounts previously reserved and reported in long-term Other Deferred Liabilities in the Company's Consolidated Balance Sheet). The Settlement Agreement provided for a release of claims between JKC and each member of the Consortium, and in connection with this agreement the members of the Consortium also waived all claims against each other and their respective parent guarantors relating to the project. On December 22, 2008, a coal fly ash pond at the Kingston Power Plant of the Tennessee Valley Authority ("TVA") was breached, releasing fly ash waste into the Emory River and surrounding community. In February 2009, TVA awarded a contract to the Company to provide project management services associated with the clean-up. All remediation and dredging were completed in August 2013 by other contractors under direct contracts with TVA. The Company did not perform the remediation, and its scope was limited to program management services. Certain employees of the contractors performing the cleanup work on the project filed lawsuits against the Company beginning in August 2013, alleging they were injured due to the Company's failure to protect the plaintiffs from exposure to fly ash, and asserting related personal injuries. The primary case, Greg Adkisson, et al. v. Jacobs Engineering Group Inc., case No. 3:13-CV-505-TAV-HBG, filed in the U.S. District Court for the Eastern District of Tennessee, consisted of 10 consolidated cases. This case and the related cases involved several hundred plaintiffs that were employees of the contractors that completed the remediation and dredging work. In the second quarter of fiscal 2023, the Company entered into a settlement agreement with the plaintiffs whose cases had not been previously dismissed. As of the third quarter of fiscal 2023, all conditions to the settlement had been satisfied, and the cases dismissed. The amount of the settlement was not material to the Company's business, financial condition, results of operations or cash flows. During the fourth quarter of fiscal 2022, the Company recorded a receivable for certain expected third-party recoveries equal to approximately $27 million before tax. The Company received the payment during fiscal 2023.

v3.24.0.1

Segment Information	3 Months Ended
	Dec. 29, 2023
Segment Reporting [Abstract]
Segment Information	Segment Information The Company's four operating segments are comprised of its two global lines of business ("LOBs"): Critical Mission Solutions ("CMS") and People & Places Solutions ("P&PS"), its business unit Divergent Solutions ("DVS") and its majority investment in PA Consulting. The Company’s Chief Executive Officer is the Chief Operating Decision Maker (“CODM”) and can evaluate the performance of each of these segments and make appropriate resource allocations among each of the segments. Under this organization, the sales function is managed by segment, and accordingly, the associated cost is embedded in the segments and reported to the respective head of each segment. In addition, a portion of the costs of other support functions (e.g., finance, legal, human resources, and information technology) is allocated to each segment using methodologies which, we believe, effectively attribute the cost of these support functions to the revenue generating activities of the Company on a rational basis. The cost of the Company’s cash incentive plan, the Leadership Performance Plan ("LPP"), formerly named the Management Incentive Plan, and the expense associated with the Jacobs 1999 Stock Incentive Plan, which was amended and restated in the second quarter of 2023 and is now referred to as the Jacobs 2023 Stock Incentive Plan (the "2023 SIP") have likewise been charged to the segments except for those amounts determined to relate to the business as a whole (which amounts remain in other corporate expenses). Financial information for each segment is reviewed by the CODM to assess performance and make decisions regarding the allocation of resources. The CODM evaluates the operating performance of our operating segments using segment operating profit, which is defined as margin less “corporate charges” (e.g., the allocated amounts described above). The Company incurs certain Selling, General and Administrative costs (“SG&A”) that relate to its business as a whole which are not allocated to the segments. The following tables present total revenues and segment operating profit from continuing operations for each reportable segment (in thousands) and includes a reconciliation of segment operating profit to total U.S. GAAP operating profit by including certain corporate-level expenses, Restructuring and other charges (as defined in Note 16- Restructuring and Other Charges) and transaction and integration costs (in thousands). For the Three Months Ended December 29, 2023 December 30, 2022 Revenues from External Customers: Critical Mission Solutions $ 1,128,603  $ 1,075,175  People & Places Solutions 2,470,441  2,226,985  Divergent Solutions 254,180  214,465  PA Consulting 306,001  282,043                Total $ 4,159,225  $ 3,798,668  For the Three Months Ended December 29, 2023 December 30, 2022 Segment Operating Profit: Critical Mission Solutions $ 93,407  $ 82,220  People & Places Solutions 224,998  226,619  Divergent Solutions (1) 7,581  11,967  PA Consulting 54,455  51,027  Total Segment Operating Profit 380,441  371,833  Other Corporate Expenses (2) (121,060) (93,686) Restructuring, Transaction and Other Charges (3) (55,318) (40,342) Total U.S. GAAP Operating Profit 204,063  237,805  Total Other Expense, net (38,314) (40,324) Earnings from Continuing Operations Before Taxes $ 165,749  $ 197,481  (1) Includes an approximate $15 million pre-tax non-cash charge associated with an inventory write down during the fiscal 2024 period comprised of adjustments of immaterial cumulative inventory misstatements previously reported which would not have been material to any prior period financial statements nor any amounts reported in the current period. (2) Other corporate expenses included intangibles amortization of $51.1 million and $49.8 million for the three months ended December 29, 2023 and December 30, 2022, respectively, along with an approximate $10 million intangibles impairment charge in the three month ended December 29, 2023 period. Additionally, the comparison of the three month period of fiscal 2024 to the corresponding 2023 period was unfavorably impacted by the one-time net favorable impacts of $41 million relating mainly to changes in employee benefits programs in the prior year, partly offset by year over year favorable department spending as well as favorable impacts of corporate functional overhead cost recovery by our lines of business. (3) The three months ended December 29, 2023 included $40.1 million in restructuring and $11.0 million of transaction charges, mainly relating to the Separation Transaction (primarily professional services and employee separation costs). Included in the three months ended December 30, 2022 were mainly $27.1 million in restructuring and other charges associated mainly with real estate impairments with the remainder associated with other miscellaneous separation and transaction professional services costs from the prior year. (1)Included in other corporate expenses in the above table are costs and expenses, which relate to general corporate activities as well as corporate-managed benefit and insurance programs. Such costs and expenses include: (i) those elements of SG&A expenses relating to the business as a whole; (ii) those elements of our incentive compensation plans relating to corporate personnel whose other compensation costs are not allocated to the LOBs; (iii) the amortization of intangible assets acquired as part of business combinations; (iv) the quarterly variances between the Company’s actual costs of certain of its self-insured integrated risk and employee benefit programs and amounts charged to the LOBs; and (v) certain adjustments relating to costs associated with the Company’s international defined benefit pension plans. In addition, other corporate expenses may also include from time to time certain adjustments to contract margins (both positive and negative) associated with projects, as well as other items, where it has been determined that such adjustments are not indicative of the performance of the related LOB. See also the further description of results of operations for our operating segments in Item 2- Management’s Discussion and Analysis of Financial Condition and Results of Operations.

v3.24.0.1

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Pay vs Performance Disclosure
Net Income (Loss) Attributable to Parent	$ 171,610	$ 135,647

v3.24.0.1

Insider Trading Arrangements	3 Months Ended
	Dec. 29, 2023 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Steven J Demetriou [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On November 28, 2023, Steven J. Demetriou, our Executive Chair, adopted a Rule 10b5-1 trading arrangement, as defined in Item 408(a) of Regulation S-K, intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. The arrangement provided for the sale of an aggregate of up to 42,000 shares of the Company’s common stock, subject to certain conditions. The arrangement will terminate on August 2, 2024.
Name	Steven J. Demetriou
Title	Executive Chair
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	November 28, 2023
Arrangement Duration	248 days
Aggregate Available	42,000
Patrick X. Hill [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On December 8, 2023, Patrick X. Hill, Executive Vice President and President, Global Operations, adopted a Rule 10b5-1 trading arrangement, as defined in Item 408(a) of Regulation S-K, intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. The arrangement provided for the sale of up to an aggregate of 5,486 shares of the Company’s common stock, subject to certain conditions. The arrangement will terminate on June 7, 2024.
Name	Patrick X. Hill
Title	Executive Vice President and President, Global Operations
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	December 8, 2023
Arrangement Duration	182 days
Aggregate Available	5,486

v3.24.0.1

Use of Estimates and Assumptions (Policies)	3 Months Ended
	Dec. 29, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Use of Estimates and Assumptions	Please refer to Note 2- Significant Accounting Policies of Notes to Consolidated Financial Statements included in our 2023 Form 10-K for a discussion of other significant estimates and assumptions affecting our consolidated financial statements.
Fair Value and Fair Value Measurements	Certain amounts included in the accompanying consolidated financial statements are presented at fair value. Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants as of the date fair value is determined (the “measurement date”). When determining fair value, we consider the principal or most advantageous market in which we would transact, and we consider only those assumptions we believe a typical market participant would consider when pricing an asset or liability. In measuring fair value, we use the following inputs in the order of priority indicated: Level 1 - Quoted prices in active markets for identical assets or liabilities. Level 2 - Observable inputs other than quoted prices in active markets included in Level 1, such as (i) quoted prices for similar assets or liabilities; (ii) quoted prices in markets that have insufficient volume or infrequent transactions (e.g., less active markets); and (iii) model-driven valuations in which all significant inputs are observable or can be derived principally from, or corroborated with, observable market data for substantially the full term of the asset or liability. Level 3 - Unobservable inputs to the valuation methodology that are significant to the fair value measurement. Please refer to Note 2- Significant Accounting Policies of Notes to Consolidated Financial Statements included in our 2023 Form 10-K for a more complete discussion of the various items within the consolidated financial statements measured at fair value and the methods used to determine fair value. Please also refer to Note 17- Commitments and Contingencies and Derivative Financial Instruments for discussion regarding the Company's derivative instruments. The net carrying amounts of cash and cash equivalents, trade receivables and payables and short-term debt approximate fair value due to the short-term nature of these instruments. See Note 12- Borrowings for a discussion of the fair value of long-term debt. Fair value measurements relating to our business combinations and goodwill allocations related to our segment realignment are made primarily using Level 3 inputs including discounted cash flow techniques. Fair value for the identified intangible assets is generally estimated using inputs primarily for the income approach using the multiple period excess earnings method and the relief from royalties method. The significant assumptions used in estimating fair value include (i) revenue projections of the business, including profitability, (ii) attrition rates and (iii) the estimated discount rate that reflects the level of risk associated with receiving future cash flows. Other personal property assets, such as furniture, fixtures and equipment, are valued using the cost approach, which is based on replacement or reproduction costs of the asset less depreciation. The fair value of the contingent consideration is estimated using a Monte Carlo simulation and the significant assumptions used include projections of revenues and probabilities of meeting those projections. Key inputs to the valuation of the noncontrolling interests include projected cash flows and the expected volatility associated with those cash flows.
New Accounting Pronouncements	New Accounting Pronouncements ASU 2023-09, Income Taxes, (Topic 740): Improvements to Income Tax Disclosures, provides qualitative and quantitative updates to the Company's effective income tax rate reconciliation and income taxes paid disclosures, among others, in order to enhance the transparency of income tax disclosures, including consistent categories and greater disaggregation of information in the rate reconciliation and disaggregation by jurisdiction of income taxes paid. The amendments in ASU 2023-09 are effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments should be applied prospectively; however, retrospective application is also permitted. ASU 2023-09 will be effective in the Company's annual fiscal 2026 period. The Company has identified and is implementing changes to processes and internal controls to meet the standard’s updated reporting and disclosure requirements. ASU 2023-07, Segment Reporting, (Topic 280): Improvements to Reportable Segment Disclosures, requires disclosure of significant segment expenses that are regularly provided to the chief operating decision maker (“CODM”) and included within each reported measure of segment profit or loss, an amount and description of its composition for other segment items to reconcile to segment profit or loss, and the title and position of the entity’s CODM. The amendments in this update also expand the interim segment disclosure requirements. ASU 2023-07 is effective for annual periods beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted and the amendments in this update are required to be applied on a retrospective basis. The Company is evaluating the impact of this guidance on its consolidated financial statements and related disclosures. ASU 2023-06, Disclosure Improvements: Amendments - Codification Amendments in Response to the Disclosure Update and Simplification Initiative of the Securities and Exchange Commission ("SEC"). The Financial Accounting Standards Board issued the standard to introduce changes to US GAAP that originate in either SEC Regulation S-X or S-K, which are rules about the form and content of financial reports filed with the SEC. The provisions of the standard are contingent upon instances where the SEC removes the related disclosure provisions from Regulation S-X and S-K. The Company does not expect that the application of this standard will have a material impact on our consolidated financial statements and related disclosures.

v3.24.0.1

Revenue Accounting for Contracts (Tables)	3 Months Ended
	Dec. 29, 2023
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	The following table further disaggregates our revenue by geographic area for the three months ended December 29, 2023 and December 30, 2022 (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Revenues:      United States $ 2,798,055  $ 2,536,114       Europe 925,197  854,734       Canada 63,375  61,829       Asia 30,940  34,824       India 35,743  40,344       Australia and New Zealand 173,771  161,040       Middle East and Africa 132,144  109,783  Total $ 4,159,225  $ 3,798,668

v3.24.0.1

Earnings Per Share and Certain Related Information (Tables)	3 Months Ended
	Dec. 29, 2023
Earnings Per Share Reconciliation [Abstract]
Schedule of Earnings Per Share	The following table reconciles the denominator used to compute basic EPS to the denominator used to compute diluted EPS for the three months ended December 29, 2023 and December 30, 2022 (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Numerator for Basic and Diluted EPS: Net earnings attributable to Jacobs from continuing operations $ 172,184  $ 136,355  Preferred Redeemable Noncontrolling interests redemption value adjustment (See Note 15- PA Consulting Redeemable Noncontrolling Interests) 1,766  —  Net earnings from continuing operations allocated to common stock for EPS calculation $ 173,950  $ 136,355  Net loss from discontinued operations allocated to common stock for EPS calculation $ (574) $ (708) Net earnings allocated to common stock for EPS calculation $ 173,376  $ 135,647  Denominator for Basic and Diluted EPS: Shares used for calculating basic EPS attributable to common stock 126,105  126,824  Effect of dilutive securities: Stock compensation plans 708  672  Shares used for calculating diluted EPS attributable to common stock 126,813  127,496  Net Earnings Per Share: Basic Net Earnings from Continuing Operations Per Share $ 1.38  $ 1.08  Basic Net Loss from Discontinued Operations Per Share $ —  $ (0.01) Basic Earnings Per Share $ 1.37  $ 1.07  Diluted Net Earnings from Continuing Operations Per Share $ 1.37  $ 1.07  Diluted Net Loss from Discontinued Operations Per Share $ —  $ (0.01) Diluted Earnings Per Share $ 1.37  $ 1.06
Schedule of Share Repurchases	The following table summarizes repurchase activity under the 2023 Repurchase Authorization through the first fiscal quarter of 2024: Amount Authorized (2023 Repurchase Authorization) Average Price Per Share (1) Total Shares Retired Shares Repurchased $1,000,000,000 $126.80 788,758 788,758 (1)Includes commissions paid and calculated at the average price per share
Schedule of Dividends Declared	Dividends paid through the first fiscal quarter of 2024 and the preceding fiscal year are as follows: Declaration Date Record Date Payment Date Cash Amount (per share) September 28, 2023 October 27, 2023 November 9, 2023 $0.26 July 6, 2023 July 28, 2023 August 25, 2023 $0.26 April 27, 2023 May 26, 2023 June 23, 2023 $0.26 January 25, 2023 February 24, 2023 March 24, 2023 $0.26 September 15, 2022 September 30, 2022 October 28, 2022 $0.23

v3.24.0.1

Goodwill and Intangibles (Tables)	3 Months Ended
	Dec. 29, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Carrying Value of Goodwill by Reportable Segment Appearing in Accompanying Consolidated Balance Sheets	The carrying value of goodwill appearing in the accompanying Consolidated Balance Sheets at December 29, 2023 and September 29, 2023 was as follows (in thousands): Critical Mission Solutions People & Places Solutions Divergent Solutions PA Consulting Total Balance September 29, 2023 $ 2,244,985  $ 3,208,193  $ 595,712  $ 1,294,636  $ 7,343,526  Foreign currency translation and other 6,530  8,954  1,733  60,655  77,872  Balance December 29, 2023 $ 2,251,515  $ 3,217,147  $ 597,445  $ 1,355,291  $ 7,421,398
Schedule of Acquired Intangibles in Accompanying Consolidated Balance Sheets	The following table provides certain information related to the Company’s acquired intangibles in the accompanying Consolidated Balance Sheets at December 29, 2023 and September 29, 2023 (in thousands): Customer Relationships, Contracts and Backlog Developed Technology Trade Names Total Balance September 29, 2023 $ 1,022,401  $ 74,791  $ 174,751  $ 1,271,943  Amortization (44,602) (3,971) (2,546) (51,119) Foreign currency translation and other 25,655  244  21,606  47,505  Balance December 29, 2023 $ 1,003,454  $ 71,064  $ 193,811  $ 1,268,329
Schedule of Estimated Amortization Expense of Intangible Assets	The following table presents estimated amortization expense of intangible assets for the remainder of fiscal 2024 and for the succeeding years. Fiscal Year (in millions) 2024 $ 158.5  2025 211.0  2026 187.8  2027 155.3  2028 144.4  Thereafter 411.3  Total $ 1,268.3

v3.24.0.1

Receivables and Contract Assets (Tables)	3 Months Ended
	Dec. 29, 2023
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Schedule of Receivables	The following table presents the components of receivables and contract assets appearing in the accompanying Consolidated Balance Sheets at December 29, 2023 and September 29, 2023, as well as certain other related information (in thousands): December 29, 2023 September 29, 2023 Components of receivables and contract assets: Amounts billed, net $ 1,546,936  $ 1,457,334  Unbilled receivables and other 1,443,568  1,442,486  Contract assets 686,004  658,986  Total receivables and contract assets, net $ 3,676,508  $ 3,558,806  Other information about receivables: Amounts due from the United States federal government, included above, net of contract liabilities $ 789,949  $ 802,566

v3.24.0.1

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Dec. 29, 2023
Equity [Abstract]
Schedule of Reclassification out of Accumulated Other Comprehensive Income	The following table presents the Company's roll forward of accumulated other comprehensive income (loss) after-tax as of December 29, 2023 (in thousands): Change in Net Pension Obligation Foreign Currency Translation Adjustment (1) Gain/(Loss) on Cash Flow Hedges (2) Total Balance at September 29, 2023 $ (325,692) $ (635,937) $ 103,675  $ (857,954) Other comprehensive (loss) income (11,215) 108,048  (10,785) 86,048  Reclassifications from accumulated other comprehensive income (loss) —  —  (9,685) (9,685) Balance at December 29, 2023 $ (336,907) $ (527,889) $ 83,205  $ (781,591) (1) Included in the overall foreign currency translation adjustment for the three months ended December 29, 2023 and December 30, 2022 are $(37.7) million and $(74.9) million, respectively in unrealized gains (losses) on long-term foreign currency denominated intercompany loans not anticipated to be settled in the foreseeable future. (2) Included in the Company’s cumulative net unrealized gains from interest rate and cross currency swaps recorded in accumulated other comprehensive income as of December 29, 2023 were approximately $19.1 million in unrealized gains, net of taxes, which are expected to be realized in earnings during the twelve months subsequent to December 29, 2023.

v3.24.0.1

Borrowings (Tables)	3 Months Ended
	Dec. 29, 2023
Debt Disclosure [Abstract]
Schedule of Long-term Debt	At December 29, 2023 and September 29, 2023, long-term debt consisted of the following (principal amounts in thousands): Interest Rate Maturity December 29, 2023 September 29, 2023 Revolving Credit Facility Benchmark + applicable margin (1) (2) February 2028 $ —  $ 10,000  2021 Term Loan Facility - USD Portion Benchmark + applicable margin (1) (3) February 2026 120,000  120,000  2021 Term Loan Facility - GBP Portion Benchmark + applicable margin (1) (3) September 2025 829,075  794,170  2020 Term Loan Facility Benchmark + applicable margin (1) (4) March 2025 (6) 852,210  854,246  Fixed-rate: 5.9% Bonds, due 2033 5.9% (5) March 2033 500,000  500,000  6.35% Bonds, due 2028 6.35% August 2028 600,000  600,000  Less: Current Portion (6) (52,444) (51,773) Less: Deferred Financing Fees (13,961) (13,172) Total Long-term debt, net $ 2,834,880  $ 2,813,471  (1)During the year ended September 29, 2023, the aggregate principal amounts denominated in U.S. dollars under the Revolving Credit Facility, the 2021 Term Loan Facility and the 2020 Term Loan Facility (each as defined below) transitioned from underlying LIBOR benchmarked rates to the Term Secured Overnight Financing Rate ("SOFR"). During fiscal 2022, the aggregate principal amounts denominated in British pounds under the Revolving Credit Facility, 2021 Term Loan Facility and 2020 Term Loan Facility transitioned from underlying LIBOR benchmarked rates to Sterling Overnight Index Average ("SONIA") rates. (2)Depending on the Company’s Consolidated Leverage Ratio or Debt Rating (each as defined in the Revolving Credit Facility (defined below)), U.S. dollar denominated borrowings under the Revolving Credit Facility bear interest at either a SOFR rate plus a margin of between 0.975% and 1.725% or a base rate plus a margin of between 0% and 0.625%. The applicable SOFR rates, or LIBOR rate for the prior fiscal year end, including applicable margins at December 29, 2023 and September 29, 2023 were approximately 6.70% and 8.75%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.908% and 1.658%. There were no amounts drawn in British pounds as of December 29, 2023. (3)Depending on the Company’s Consolidated Leverage Ratio or Debt Rating (each as defined in the Amended and Restated Term Loan Agreement (defined below)), U.S. dollar denominated borrowings under the 2021 Term Loan Facility bear interest at either a SOFR rate plus a margin of between 0.975% and 1.725% or a base rate plus a margin of between 0% and 0.625%. The applicable SOFR, or LIBOR rate for the prior fiscal year end, including applicable margins for borrowings denominated in U.S. dollars at December 29, 2023 and September 29, 2023 was approximately 6.70% and 6.68%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.908% and 1.658%, which was approximately 6.47% and 6.47% at December 29, 2023 and September 29, 2023, respectively. (4)Depending on the Company’s Consolidated Leverage Ratio or Debt Rating (each as defined in the 2020 Term Loan Agreement), U.S. dollar denominated borrowings under the 2020 Term Loan Facility bear interest at either a SOFR rate plus a margin of between 0.975% and 1.725% or a base rate plus a margin of between 0% and 0.625%. The applicable SOFR, or LIBOR rate for the prior fiscal year end, including applicable margins for borrowings denominated in U.S. dollars at December 29, 2023 and September 29, 2023 were approximately 6.70% and 6.68%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.908% and 1.658%, which was approximately 6.47% and 6.47% at December 29, 2023 and September 29, 2023, respectively. (5)From and including September 1, 2028 (the “First Step Up Date”), the interest rate payable on the 5.90% Bonds (as defined below) will be increased by an additional 12.5 basis points to 6.025% per annum (the “First Step Up Interest Rate”) unless the Company notifies the Trustee (as defined below) on or before the date that is 15 days prior to the First Step Up Date that the Percentage of Gender Diversity Performance Target (as defined in the First Supplemental Indenture (as defined below)) has been satisfied and receives a related assurance letter verifying such compliance. From and including September 1, 2030 (the “Second Step Up Date”), the interest rate payable on the 5.90% Bonds will be increased by 12.5 basis points to (x) 6.150% per annum if the First Step Up Interest Rate was in effect immediately prior to the Second Step Up Date or (y) 6.025% per annum if the initial interest rate was in effect immediately prior to the Second Step Up Date, unless the Company notifies the Trustee on or before the date that is 15 days prior to the Second Step Up Date that the GHG Emissions Performance Target (as defined in the First Supplemental Indenture) has been satisfied and receives a related assurance letter verifying such compliance. (6)The current portion of long-term debt is comprised primarily of the 2020 Term Loan Facility quarterly principal repayments of 1.25%, or $9.125 million and £3.125 million, of the aggregate initial principal amount borrowed.

v3.24.0.1

Leases (Tables)	3 Months Ended
	Dec. 29, 2023
Leases [Abstract]
Schedule of Lease Cost	The components of lease expense (reflected in selling, general and administrative expenses) for the three months ended December 29, 2023 and December 30, 2022 were as follows (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Lease expense Operating lease expense $ 34,200  $ 35,282  Variable lease expense 9,337  9,346  Sublease income (4,711) (4,406) Total lease expense $ 38,826  $ 40,222  Supplemental information related to the Company's leases for the three months ended December 29, 2023 and December 30, 2022 was as follows (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Cash paid for amounts included in the measurements of lease liabilities $ 47,413 $ 45,770 Right-of-use assets obtained in exchange for new operating lease liabilities $ 8,384 $ 29,801 Weighted average remaining lease term - operating leases 5.8 years 6.2 years Weighted average discount rate - operating leases 3.4% 3.0%
Schedule of Operating Lease Maturity	Total remaining lease payments under the Company's leases for the remainder of fiscal 2024 and for the succeeding years is as follows (in thousands): Fiscal Year Operating Leases 2024 $ 131,023  2025 146,078  2026 122,727  2027 100,231  2028 82,567  Thereafter 160,807  743,433  Less Interest (68,291) $ 675,142

v3.24.0.1

Pension and Other Postretirement Benefit Plans (Tables)	3 Months Ended
	Dec. 29, 2023
Retirement Benefits [Abstract]
Schedule of Pension Plans' Net Benefit Obligation	The following table presents the components of net periodic pension benefit expense recognized in earnings during the three months ended December 29, 2023 and December 30, 2022 (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Component: Service cost $ 2,261  $ 1,748  Interest cost 21,560  20,233  Expected return on plan assets (23,726) (21,091) Amortization of previously unrecognized items 1,949  1,304  Total net periodic pension benefit expense recognized $ 2,044  $ 2,194
Schedule of Certain Information Regarding Cash Contributions	The following table presents certain information regarding the Company’s cash contributions to our pension plans for fiscal 2024 (in thousands): Cash contributions made during the first three months of fiscal 2024 $ 5,297  Cash contributions projected for the remainder of fiscal 2024 13,984  Total $ 19,281

v3.24.0.1

PA Consulting Redeemable Noncontrolling Interests (Tables)	3 Months Ended
	Dec. 29, 2023
PA Consulting Group Limited
Business Acquisition [Line Items]
Schedule of Redeemable Noncontrolling Interest	Changes in the redeemable noncontrolling interests during the three months ended December 29, 2023 are as follows (in thousands): Balance at September 29, 2023 $ 632,979  Accrued Preferred Dividend to Preference Shareholders 19,285  Attribution of Preferred Dividend to Common Shareholders (19,285) Net earnings attributable to redeemable noncontrolling interests to Common Shareholders 2,618  Redeemable Noncontrolling interests redemption value adjustment 25,718  Repurchase of redeemable noncontrolling interests (26,258) Cumulative translation adjustment and other 19,019  Balance at December 29, 2023 $ 654,076

v3.24.0.1

Restructuring and Other Charges (Tables)	3 Months Ended
	Dec. 29, 2023
Restructuring and Related Activities [Abstract]
Schedule of Restructuring and Other Charges Impacts on Reportable Segment Income by Line of Business	Three Months Ended December 29, 2023 December 30, 2022 Critical Mission Solutions $ 2,163  $ 2,212  People & Places Solutions 8,129  27,317  Divergent Solutions 900  1,581  PA Consulting 1,175  —  Corporate 29,002  3,333  Total $ 41,369  $ 34,443  Amounts included in: Operating profit (mainly SG&A) (1) $ 41,369  $ 35,072  Other Income, net —  (629) $ 41,369  $ 34,443  (1)The three months ended December 29, 2023 included $40.1 million in restructuring and other charges mainly relating to the Separation Transaction (primarily professional services and employee separation costs). The three months ended December 30, 2022, included $27.8 million in charges associated mainly with real estate impairments and related charges.
Schedule of Restructuring and Other Activities	The activity in the Company’s accruals for Restructuring and other charges for the three months ended December 29, 2023 is as follows (in thousands): Balance at September 29, 2023 $ 37,318  Net Charges (Credits) (1) 41,320  Payments and other (46,145) Balance at December 29, 2023 $ 32,493  (1) Excludes other net charges associated mainly with the real estate related impairments and other transformation activities during the three months ended December 29, 2023.
Schedule of Restructuring and Other Activities by Major Type of Costs	The following table summarizes the Restructuring and other charges by major type of costs for the three months ended December 29, 2023 and December 30, 2022 (in thousands): Three Months Ended December 29, 2023 December 30, 2022 Lease Abandonments and Impairments $ 49  $ 26,831  Voluntary and Involuntary Terminations 11,728  6,570  Outside Services (1) 24,983  675  Other (2) 4,609  367  Total $ 41,369  $ 34,443  (1) Amounts in the three months ended December 29, 2023 are comprised of outside services relating to the Separation Transaction. (2) Amounts in the three months ended December 29, 2023 are comprised of charges relating to the Separation Transaction.
Schedule of Cumulative Amounts Incurred for Restructuring and Other Activities Costs	Cumulative amounts incurred to date under our various Restructuring and other activities described above by each major type of cost as of December 29, 2023 are as follows (in thousands): Lease Abandonments and Impairments $ 432,773  Voluntary and Involuntary Terminations 180,044  Outside Services 370,673  Other 200,543  Total $ 1,184,033

v3.24.0.1

Segment Information (Tables)	3 Months Ended
	Dec. 29, 2023
Segment Reporting [Abstract]
Schedule of Total Revenues, Segment Operating Profit and Total Asset for Reporting Segment	The following tables present total revenues and segment operating profit from continuing operations for each reportable segment (in thousands) and includes a reconciliation of segment operating profit to total U.S. GAAP operating profit by including certain corporate-level expenses, Restructuring and other charges (as defined in Note 16- Restructuring and Other Charges) and transaction and integration costs (in thousands). For the Three Months Ended December 29, 2023 December 30, 2022 Revenues from External Customers: Critical Mission Solutions $ 1,128,603  $ 1,075,175  People & Places Solutions 2,470,441  2,226,985  Divergent Solutions 254,180  214,465  PA Consulting 306,001  282,043                Total $ 4,159,225  $ 3,798,668  For the Three Months Ended December 29, 2023 December 30, 2022 Segment Operating Profit: Critical Mission Solutions $ 93,407  $ 82,220  People & Places Solutions 224,998  226,619  Divergent Solutions (1) 7,581  11,967  PA Consulting 54,455  51,027  Total Segment Operating Profit 380,441  371,833  Other Corporate Expenses (2) (121,060) (93,686) Restructuring, Transaction and Other Charges (3) (55,318) (40,342) Total U.S. GAAP Operating Profit 204,063  237,805  Total Other Expense, net (38,314) (40,324) Earnings from Continuing Operations Before Taxes $ 165,749  $ 197,481  (1) Includes an approximate $15 million pre-tax non-cash charge associated with an inventory write down during the fiscal 2024 period comprised of adjustments of immaterial cumulative inventory misstatements previously reported which would not have been material to any prior period financial statements nor any amounts reported in the current period. (2) Other corporate expenses included intangibles amortization of $51.1 million and $49.8 million for the three months ended December 29, 2023 and December 30, 2022, respectively, along with an approximate $10 million intangibles impairment charge in the three month ended December 29, 2023 period. Additionally, the comparison of the three month period of fiscal 2024 to the corresponding 2023 period was unfavorably impacted by the one-time net favorable impacts of $41 million relating mainly to changes in employee benefits programs in the prior year, partly offset by year over year favorable department spending as well as favorable impacts of corporate functional overhead cost recovery by our lines of business. (3) The three months ended December 29, 2023 included $40.1 million in restructuring and $11.0 million of transaction charges, mainly relating to the Separation Transaction (primarily professional services and employee separation costs). Included in the three months ended December 30, 2022 were mainly $27.1 million in restructuring and other charges associated mainly with real estate impairments with the remainder associated with other miscellaneous separation and transaction professional services costs from the prior year.

v3.24.0.1

Basis of Presentation (Details) - USD ($) shares in Millions	Apr. 26, 2019	Dec. 29, 2023
Worley Stock
Business Acquisition [Line Items]
Ordinary shares included in purchase price (in shares)	58.2
Worley
Business Acquisition [Line Items]
Consideration transferred	$ 3,400,000,000
Consideration paid in cash	$ 2,800,000,000
Worley | Discontinued Operations
Business Acquisition [Line Items]
Assets held for sale		$ 0

v3.24.0.1

Revenue Accounting for Contracts - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 4,159,225	$ 3,798,668
United States
Disaggregation of Revenue [Line Items]
Revenues	2,798,055	2,536,114
Europe
Disaggregation of Revenue [Line Items]
Revenues	925,197	854,734
Canada
Disaggregation of Revenue [Line Items]
Revenues	63,375	61,829
Asia
Disaggregation of Revenue [Line Items]
Revenues	30,940	34,824
India
Disaggregation of Revenue [Line Items]
Revenues	35,743	40,344
Australia and New Zealand
Disaggregation of Revenue [Line Items]
Revenues	173,771	161,040
Middle East and Africa
Disaggregation of Revenue [Line Items]
Revenues	$ 132,144	$ 109,783

v3.24.0.1

Revenue Accounting for Contracts - Contract Liabilities (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Revenue from Contract with Customer [Abstract]
Revenue recognized included in contract liability	$ 369.6	$ 330.3

v3.24.0.1

Revenue Accounting for Contracts - Remaining Performance Obligation (Details) $ in Billions	Dec. 29, 2023 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, amounts	$ 17.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-12-30
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percentage	56.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-12-31
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percentage	44.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period

v3.24.0.1

Earnings Per Share and Certain Related Information - Schedule of EPS to Denominator (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Numerator for Basic and Diluted EPS:
Net earnings attributable to Jacobs from continuing operations	$ 172,184	$ 136,355
Preferred Redeemable Noncontrolling interests redemption value adjustment (See Note 15- PA Consulting Redeemable Noncontrolling Interests)	1,766	0
Net earnings from continuing operations allocated to common stock for EPS calculation	173,950	136,355
Net loss from discontinued operations allocated to common stock for EPS calculation	(574)	(708)
Net earnings allocated to common stock for EPS calculation	$ 173,376	$ 135,647
Denominator for Basic and Diluted EPS:
Shares used for calculating basic EPS attributable to common stock (in shares)	126,105	126,824
Effect of dilutive securities:
Stock compensation plans (in shares)	708	672
Shares used for calculating diluted EPS attributable to common stock (in shares)	126,813	127,496
Basic Earnings Per Share
Basic Net Earnings from Continuing Operations Per Share (in dollars per share)	$ 1.38	$ 1.08
Basic Net Loss from Discontinued Operations Per Share (in dollars per share)	0	(0.01)
Basic Earnings Per Share (in dollars per share)	1.37	1.07
Diluted Earnings Per Share
Diluted Net Earnings from Continuing Operations Per Share (in dollars per share)	1.37	1.07
Diluted Net Loss from Discontinued Operations Per Share (in dollars per share)	0	(0.01)
Diluted Earnings Per Share (in dollars per share)	$ 1.37	$ 1.06

v3.24.0.1

Earnings Per Share and Certain Related Information - Narrative (Details) - USD ($)	Jan. 25, 2024	Sep. 28, 2023	Aug. 25, 2023	Apr. 27, 2023	Jan. 25, 2023	Sep. 15, 2022	Dec. 29, 2023	Jan. 16, 2020
Class of Stock [Line Items]
Dividend declared (in dollars per share)		$ 0.26	$ 0.26	$ 0.26	$ 0.26	$ 0.23
Subsequent Event
Class of Stock [Line Items]
Dividend declared (in dollars per share)	$ 0.29
2020 Stock Repurchase Program
Class of Stock [Line Items]
Amount authorized to be repurchased								$ 1,000,000,000
2023 Stock Repurchase Program
Class of Stock [Line Items]
Amount authorized to be repurchased					$ 1,000,000,000		$ 1,000,000,000
Remaining authorized repurchase amount							$ 774,800,000

v3.24.0.1

Earnings Per Share and Certain Related Information - Schedule of Share Repurchases (Details) - 2023 Stock Repurchase Program - USD ($)	3 Months Ended
	Dec. 29, 2023	Jan. 25, 2023
Class of Stock [Line Items]
Amount authorized to be repurchased	$ 1,000,000,000	$ 1,000,000,000
Average Price Per Share (in dollars per share)	$ 126.80
Total Shares Retired (in shares)	788,758
Shares Repurchased (in shares)	788,758

v3.24.0.1

Earnings Per Share and Certain Related Information - Schedule of Dividends (Details) - $ / shares	Nov. 09, 2023	Sep. 28, 2023	Aug. 25, 2023	Jul. 06, 2023	Jun. 23, 2023	Apr. 27, 2023	Mar. 24, 2023	Jan. 25, 2023	Oct. 28, 2022	Sep. 15, 2022
Earnings Per Share Reconciliation [Abstract]
Dividend declared (in dollars per share)		$ 0.26	$ 0.26			$ 0.26		$ 0.26		$ 0.23
Dividends paid (in dollars per share)	$ 0.26			$ 0.26	$ 0.26		$ 0.26		$ 0.23

v3.24.0.1

Goodwill and Intangibles - Schedule of Carrying Value of Goodwill by Reportable Segment Appearing in Accompanying Consolidated Balance Sheets (Details) $ in Thousands	3 Months Ended
	Dec. 29, 2023 USD ($)
Goodwill [Roll Forward]
Balance at the beginning of the period	$ 7,343,526
Foreign currency translation and other	77,872
Balance at the end of the period	7,421,398
Critical Mission Solutions
Goodwill [Roll Forward]
Balance at the beginning of the period	2,244,985
Foreign currency translation and other	6,530
Balance at the end of the period	2,251,515
People & Places Solutions
Goodwill [Roll Forward]
Balance at the beginning of the period	3,208,193
Foreign currency translation and other	8,954
Balance at the end of the period	3,217,147
Divergent Solutions
Goodwill [Roll Forward]
Balance at the beginning of the period	595,712
Foreign currency translation and other	1,733
Balance at the end of the period	597,445
PA Consulting
Goodwill [Roll Forward]
Balance at the beginning of the period	1,294,636
Foreign currency translation and other	60,655
Balance at the end of the period	$ 1,355,291

v3.24.0.1

Goodwill and Intangibles - Schedule of Acquired Intangibles in Accompanying Consolidated Balance Sheets (Details) $ in Thousands	3 Months Ended
	Dec. 29, 2023 USD ($)
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 1,271,943
Amortization	(51,119)
Foreign currency translation and other	47,505
Ending balance	1,268,329
Customer Relationships, Contracts and Backlog
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	1,022,401
Amortization	(44,602)
Foreign currency translation and other	25,655
Ending balance	1,003,454
Developed Technology
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	74,791
Amortization	(3,971)
Foreign currency translation and other	244
Ending balance	71,064
Trade Names
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	174,751
Amortization	(2,546)
Foreign currency translation and other	21,606
Ending balance	$ 193,811

v3.24.0.1

Goodwill and Intangibles - Schedule of Estimated Amortization Expense of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 29, 2023	Sep. 29, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
2024	$ 158,500
2025	211,000
2026	187,800
2027	155,300
2028	144,400
Thereafter	411,300
Total	$ 1,268,329	$ 1,271,943

v3.24.0.1

Receivables and Contract Assets (Details) - USD ($) $ in Thousands	Dec. 29, 2023	Sep. 29, 2023
Components of receivables and contract assets:
Amounts billed, net	$ 1,546,936	$ 1,457,334
Unbilled receivables and other	1,443,568	1,442,486
Contract assets	686,004	658,986
Total receivables and contract assets, net	3,676,508	3,558,806
Related Party
Other information about receivables:
Amounts due from the United States federal government, included above, net of contract liabilities	$ 789,949	$ 802,566

v3.24.0.1

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 6,600,082	$ 6,104,392
Other comprehensive (loss) income	86,048
Reclassifications from accumulated other comprehensive income (loss)	(9,685)
Ending balance	6,734,850	6,233,598
Foreign currency translation adjustment	(37,700)	(74,900)
Interest rate and cross currency swap gains to be reclassified during the next 12 months	19,100
Total
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(857,954)	(975,130)
Ending balance	(781,591)	$ (845,852)
Change in Net Pension Obligation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(325,692)
Other comprehensive (loss) income	(11,215)
Reclassifications from accumulated other comprehensive income (loss)	0
Ending balance	(336,907)
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(635,937)
Other comprehensive (loss) income	108,048
Reclassifications from accumulated other comprehensive income (loss)	0
Ending balance	(527,889)
Gain/(Loss) on Cash Flow Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	103,675
Other comprehensive (loss) income	(10,785)
Reclassifications from accumulated other comprehensive income (loss)	(9,685)
Ending balance	$ 83,205

v3.24.0.1

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Income Tax Disclosure [Abstract]
Effective income tax rate	(9.80%)	25.40%
Deferred income tax benefit, change in indefinite reinvestment assertion in foreign subsidiary	$ 61.6
U.S state income tax expense	3.2	$ 4.6
U.S tax on foreign earnings	$ 3.2	$ 3.6

v3.24.0.1

Joint Ventures, VIEs and Other Investments (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022	Sep. 29, 2023
Variable Interest Entity [Line Items]
Consolidated assets	$ 14,952,204		$ 14,617,109
Income from equity method investments	(1,870)	$ (2,613)
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Consolidated assets	409,800		424,200
Consolidated liabilities	256,400		279,800
VIE, not primary beneficiary
Variable Interest Entity [Line Items]
Consolidated assets	146,100		132,000
Consolidated liabilities	138,200		128,900
Equity method investments	48,100		49,600
Income from equity method investments	10,300	$ 10,000
Accounts receivable from unconsolidated joint ventures accounted for under the equity method	$ 12,000		$ 16,100

v3.24.0.1

Borrowings - Schedule of Long-term Debt (Details) $ in Thousands			3 Months Ended		12 Months Ended
	Aug. 18, 2023	Feb. 16, 2023	Dec. 29, 2023 USD ($)	Dec. 29, 2023 GBP (£)	Sep. 29, 2023 USD ($)	Dec. 29, 2023 GBP (£)
Debt Instrument [Line Items]
Long-term debt			$ 2,834,880		$ 2,813,471
Less: Current Portion			(52,444)		(51,773)
Less: Deferred Financing Fees			(13,961)		(13,172)
2021 Term Loan Facility - USD Portion
Debt Instrument [Line Items]
Long-term debt			$ 120,000		120,000
2021 Term Loan Facility - USD Portion | Base Interest Rate | Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.00%	0.00%
2021 Term Loan Facility - USD Portion | Base Interest Rate | Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.625%	0.625%
2021 Term Loan Facility - GBP Portion
Debt Instrument [Line Items]
Long-term debt			$ 829,075		$ 794,170
2021 Term Loan Facility - GBP Portion | Sterling Overnight Interbank Average Rate (SONIA)
Debt Instrument [Line Items]
Effective interest rate			6.47%		6.47%	6.47%
2021 Term Loan Facility - GBP Portion | Sterling Overnight Interbank Average Rate (SONIA) | Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.908%	0.908%	1.658%
2020 Term Loan Facility
Debt Instrument [Line Items]
Long-term debt			$ 852,210		$ 854,246
Quarterly principal payment, percent of aggregate borrowings			1.25%			1.25%
Quarterly principal payment			$ 9,125	£ 3,125,000
2020 Term Loan Facility | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.975%	0.975%
2020 Term Loan Facility | Secured Overnight Financing Rate (SOFR) | Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.725%	1.725%
2020 Term Loan Facility | Base Interest Rate | Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.00%	0.00%
2020 Term Loan Facility | Base Interest Rate | Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.625%	0.625%
2020 Term Loan Facility | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Effective interest rate			6.70%		6.68%	6.70%
2020 Term Loan Facility | Sterling Overnight Interbank Average Rate (SONIA)
Debt Instrument [Line Items]
Effective interest rate			6.47%		6.47%	6.47%
2020 Term Loan Facility | Sterling Overnight Interbank Average Rate (SONIA) | Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.908%	0.908%	1.658%
5.90% Bonds | Senior Notes
Debt Instrument [Line Items]
Long-term debt			$ 500,000		$ 500,000
Interest rate		5.90%
Interest rate, increase (decrease) over period		0.35%
5.90% Bonds | Senior Notes | First Step Up Date
Debt Instrument [Line Items]
Interest rate			5.90%			5.90%
Debt instrument, basis spread on variable rate			6.025%	6.025%
Interest rate, increase (decrease) over period			0.125%	0.125%
Interest rate payable period			15 days	15 days
5.90% Bonds | Senior Notes | Second Step Up Date
Debt Instrument [Line Items]
Interest rate			5.90%			5.90%
Debt instrument, basis spread on variable rate			6.15%	6.15%
Interest rate, increase (decrease) over period			0.125%	0.125%
Interest rate payable period			15 days	15 days
6.35% Bonds | Senior Notes
Debt Instrument [Line Items]
Long-term debt			$ 600,000		$ 600,000
Interest rate	6.35%
Interest rate, increase (decrease) over period	0.30%
2021 Term Loan Facility - USD Portion | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.975%	0.975%
2021 Term Loan Facility - USD Portion | Secured Overnight Financing Rate (SOFR) | Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.725%	1.725%
2021 Term Loan Facility - USD Portion | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Effective interest rate			6.70%		6.68%	6.70%
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt			$ 0		$ 10,000	£ 0
Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.975%	0.975%
Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.725%	1.725%
Revolving Credit Facility | Base Interest Rate | Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.00%	0.00%
Revolving Credit Facility | Base Interest Rate | Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.625%	0.625%
Revolving Credit Facility | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Effective interest rate			6.70%		8.75%	6.70%
Revolving Credit Facility | Sterling Overnight Interbank Average Rate (SONIA) | Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.908%	0.908%
Revolving Credit Facility | Sterling Overnight Interbank Average Rate (SONIA) | Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					1.658%

v3.24.0.1

Borrowings - Narrative (Details) $ in Thousands, £ in Millions						3 Months Ended
	Aug. 18, 2023 USD ($)	Feb. 16, 2023 USD ($)	Feb. 06, 2023 USD ($)	Feb. 06, 2023 GBP (£)	Mar. 27, 2019	Dec. 29, 2023 USD ($)	Dec. 30, 2022 USD ($)	Sep. 29, 2023 USD ($)	Feb. 13, 2023 USD ($)	Sep. 30, 2022 USD ($) derivative_agreement	Mar. 25, 2020 USD ($)	Mar. 25, 2020 GBP (£)
Debt Instrument [Line Items]
Proceeds from long-term borrowings						$ 540,401	$ 1,282,000
Line of Credit
Debt Instrument [Line Items]
Short-term debt						311,500		$ 322,000
Treasury Lock
Debt Instrument [Line Items]
Number of instruments held | derivative_agreement										2
Derivative notional amount										$ 500,000
Fixed Rate Date | Treasury Lock
Debt Instrument [Line Items]
Aggregate principal amount								$ 500,000	$ 500,000
2021 Term Loan Facility
Debt Instrument [Line Items]
Proceeds from long-term borrowings			$ 200,000	£ 650.0
Long-term line of credit						80,000
2020 Term Loan Facility
Debt Instrument [Line Items]
Aggregate principal amount											$ 730,000
2020 Term Loan Facility | U.K. subsidiary
Debt Instrument [Line Items]
Aggregate principal amount | £												£ 250.0
5.90% Bonds | Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount		$ 500,000
Interest rate		5.90%
Interest rate, increase (decrease) over period		0.35%
Redemption price percentage		100.00%
6.35% Bonds | Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount	$ 600,000
Interest rate	6.35%
Interest rate, increase (decrease) over period	0.30%
Redemption price percentage	100.00%
Revolving Credit Facility
Debt Instrument [Line Items]
Available borrowing capacity						2,250,000
Revolving Credit Facility | Unsecured Revolving Credit Facility February 6, 2023
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity			$ 2,250,000
Revolving Credit Facility | Second Amendment to the Revolving Credit Facility
Debt Instrument [Line Items]
Covenant, leverage ratio, maximum					3.50
Covenant, leverage ratio, temporary maximum					4.00
Revolving Credit Facility | Second Amendment to the Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage					0.10%
Revolving Credit Facility | Second Amendment to the Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage					0.25%
Revolving Credit Facility | 2021 Term Loan Facility
Debt Instrument [Line Items]
Covenant, leverage ratio, maximum			3.50
Covenant, leverage ratio, temporary maximum			4.00
Revolving Credit Facility | 2020 Term Loan Facility
Debt Instrument [Line Items]
Covenant, leverage ratio, maximum			3.50
Covenant, leverage ratio, temporary maximum			4.00
Letter of Credit
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity			$ 400,000
Letter of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term line of credit						900
Letter of Credit | Committed and Uncommitted Letter-of-Credit Facilities
Debt Instrument [Line Items]
Long-term line of credit						$ 310,700
Sub Facility Of Swing Line Loans
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity			$ 100,000

v3.24.0.1

Leases - Schedule of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Leases [Abstract]
Operating lease expense	$ 34,200	$ 35,282
Variable lease expense	9,337	9,346
Sublease income	(4,711)	(4,406)
Total lease expense	$ 38,826	$ 40,222

v3.24.0.1

Leases - Schedule of Supplemental Cash Flow (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Leases [Abstract]
Cash paid for amounts included in the measurements of lease liabilities	$ 47,413	$ 45,770
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 8,384	$ 29,801
Weighted average remaining lease term - operating leases	5 years 9 months 18 days	6 years 2 months 12 days
Weighted average discount rate - operating leases	3.40%	3.00%

v3.24.0.1

Leases - Schedule of Operating Lease Maturity (Details) $ in Thousands	Dec. 29, 2023 USD ($)
Leases [Abstract]
2024	$ 131,023
2025	146,078
2026	122,727
2027	100,231
2028	82,567
Thereafter	160,807
Remaining lease payments under operating leases	743,433
Less Interest	(68,291)
Operating lease liabilities	$ 675,142

v3.24.0.1

Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Lessee, Lease, Description [Line Items]
Impairment losses	$ 27,100
Impairment of long-lived assets	0	$ 27,142
Right-of-Use Lease Asset
Lessee, Lease, Description [Line Items]
Impairment of long-lived assets	24,300
Other Long-Lived Assets
Lessee, Lease, Description [Line Items]
Impairment of long-lived assets	$ 2,800

v3.24.0.1

Pension and Other Postretirement Benefit Plans - Schedule of Pension Plans' Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Component:
Service cost	$ 2,261	$ 1,748
Interest cost	21,560	20,233
Expected return on plan assets	(23,726)	(21,091)
Amortization of previously unrecognized items	1,949	1,304
Total net periodic pension benefit expense recognized	$ 2,044	$ 2,194

v3.24.0.1

Pension and Other Postretirement Benefit Plans - Schedule of Certain Information Regarding Cash Contributions (Details) $ in Thousands	3 Months Ended
	Dec. 29, 2023 USD ($)
Retirement Benefits [Abstract]
Cash contributions made during the first three months of fiscal 2024	$ 5,297
Cash contributions projected for the remainder of fiscal 2024	13,984
Total	$ 19,281

v3.24.0.1

PA Consulting Redeemable Noncontrolling Interests - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022	Sep. 29, 2023	Mar. 02, 2021
Business Acquisition [Line Items]
Repurchase of redeemable noncontrolling interests	$ 24,360	$ 58,353
Preferred redeemable noncontrolling interests redemption value adjustment	$ 1,766	0
Preference share effect on basic earnings per share (in dollars per share)	$ 0.01
PA Consulting Employees
Business Acquisition [Line Items]
Ownership interest of employees	70.00%		69.00%
PA Consulting Group Limited
Business Acquisition [Line Items]
Percentage of outstanding shares of common and preferred stock acquired				65.00%
Allocated share-based compensation expense	$ 1,600	$ 4,300
Cash in employee benefit trust	$ 1,000		$ 2,800

v3.24.0.1

PA Consulting Redeemable Noncontrolling Interests - Schedule of Change in Redeemable Noncontrolling Interest (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Redeemable noncontrolling interest, beginning balance	$ 53,862
Attribution of Preferred Dividend to Common Shareholders	(4,512)	$ (1,873)
Redeemable noncontrolling interest, ending balance	56,576
PA Consulting Employees
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Redeemable noncontrolling interest, beginning balance	632,979
Accrued Preferred Dividend to Preference Shareholders	19,285
Attribution of Preferred Dividend to Common Shareholders	(19,285)
Net earnings attributable to redeemable noncontrolling interests to Common Shareholders	2,618
Redeemable Noncontrolling interests redemption value adjustment	25,718
Repurchase of redeemable noncontrolling interests	(26,258)
Cumulative translation adjustment and other	19,019
Redeemable noncontrolling interest, ending balance	$ 654,076

v3.24.0.1

Restructuring and Other Charges - Schedule of Restructuring and Other Charges Impacts on Reportable Segment Income by Line of Business (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 41,320
CH2M HILL Companies, Ltd.
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	41,369	$ 34,443
CH2M HILL Companies, Ltd. | Operating profit (mainly SG&A)
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	41,369	35,072
Real estate impairment and other moving cost		27,800
CH2M HILL Companies, Ltd. | Operating profit (mainly SG&A) | Professional Services and Employee Seperation
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	40,100
CH2M HILL Companies, Ltd. | Other (Income) Expense, net
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	0	(629)
CH2M HILL Companies, Ltd. | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	29,002	3,333
CH2M HILL Companies, Ltd. | Critical Mission Solutions | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	2,163	2,212
CH2M HILL Companies, Ltd. | People & Places Solutions | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	8,129	27,317
CH2M HILL Companies, Ltd. | Divergent Solutions | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	900	1,581
CH2M HILL Companies, Ltd. | PA Consulting | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 1,175	$ 0

v3.24.0.1

Restructuring and Other Charges - Schedule of Restructuring and Other Activities (Details) $ in Thousands	3 Months Ended
	Dec. 29, 2023 USD ($)
Restructuring Reserve [Roll Forward]
Beginning balance	$ 37,318
Net Charges (Credits)	41,320
Payments and other	(46,145)
Ending balance	$ 32,493

v3.24.0.1

Restructuring and Other Charges - Schedule of Restructuring and Other Activities by Major Type of Costs (Details) - CH2M Hill, KeyM, John Wood Group Acquisitions and ECR Sale - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 41,369	$ 34,443
Lease Abandonments and Impairments
Restructuring Cost and Reserve [Line Items]
Restructuring costs	49	26,831
Voluntary and Involuntary Terminations
Restructuring Cost and Reserve [Line Items]
Restructuring costs	11,728	6,570
Outside Services
Restructuring Cost and Reserve [Line Items]
Restructuring costs	24,983	675
Other
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 4,609	$ 367

v3.24.0.1

Restructuring and Other Charges - Schedule of Cumulative Amounts Incurred for Restructuring and Other Activities Costs (Details) $ in Thousands	Dec. 29, 2023 USD ($)
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	$ 1,184,033
Lease Abandonments and Impairments
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	432,773
Voluntary and Involuntary Terminations
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	180,044
Outside Services
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	370,673
Other
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	$ 200,543

v3.24.0.1

Commitments and Contingencies and Derivative Financial Instruments (Details) $ in Millions, $ in Millions				3 Months Ended	12 Months Ended
	Feb. 13, 2023 USD ($)	Apr. 12, 2022 USD ($)	Apr. 12, 2022 AUD ($)	Dec. 29, 2023 USD ($)	Sep. 29, 2023 USD ($)	Sep. 30, 2022 USD ($) derivative_agreement	Oct. 02, 2020 USD ($)	Sep. 28, 2012 MW	Dec. 22, 2008 case
Loss Contingencies [Line Items]
Recorded third-party environmental recoveries receivable						$ 27.0
JKC Australia LNG Pty Limited
Loss Contingencies [Line Items]
Settlement payment		$ 475.0
General Electric and GE Electrical International Inc
Loss Contingencies [Line Items]
Plant capacity (in MW's) | MW								360
Settlement payment			$ 640
Litigation expenses included in segment profit						$ 91.3
Kingston Power Plant of the TVA, Secondary Case No. 3:13CV-505-TAV-HBG
Loss Contingencies [Line Items]
Number of pending claims | case									10
UGL Infrastructure Pty Limited | Consortium Agreement
Loss Contingencies [Line Items]
Percentage of ownership interest in joint venture								5000.00%
Surety Bond
Loss Contingencies [Line Items]
Aggregate principal balance of short-term debt				$ 2,100.0	$ 2,000.0
LOCs
Loss Contingencies [Line Items]
Aggregate principal balance of short-term debt				311.5	322.0
Treasury Lock
Loss Contingencies [Line Items]
Number of instruments held | derivative_agreement						2
Derivative notional amount						$ 500.0
Gain on derivatives, before taxes	$ 37.4
Unrealized gain (loss) on derivatives				25.8	26.5
Treasury Lock | Fixed Rate Date
Loss Contingencies [Line Items]
Derivative fixed interest rate	5.90%
Aggregate principal amount	$ 500.0				500.0
Interest Rate Swap and Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Unrealized gain (loss) on derivatives				57.4	77.2
Derivative assets (liabilities), at fair value				76.3
Interest Rate Swap
Loss Contingencies [Line Items]
Derivative notional amount				$ 779.9
Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Derivative notional amount							$ 127.8
Cross Currency Interest Rate Contract | Minimum
Loss Contingencies [Line Items]
Term of derivative contract				3 years 6 months
Cross Currency Interest Rate Contract | Maximum
Loss Contingencies [Line Items]
Term of derivative contract							10 years
Cross Currency Interest Rate Contract and Interest Rate Swap
Loss Contingencies [Line Items]
Derivative assets (liabilities), at fair value					102.6
Foreign Exchange Forward
Loss Contingencies [Line Items]
Derivative notional amount				$ 964.9	857.7
Derivative assets (liabilities), at fair value				23.3	9.5
Foreign Exchange Forward | Other Current Assets
Loss Contingencies [Line Items]
Derivative assets (liabilities), at fair value				24.8	16.1
Foreign Exchange Forward | Accounts Payable
Loss Contingencies [Line Items]
Derivative assets (liabilities), at fair value				$ (1.5)	$ (6.6)
Foreign Exchange Forward | Minimum
Loss Contingencies [Line Items]
Term of derivative contract				7 days
Foreign Exchange Forward | Maximum
Loss Contingencies [Line Items]
Term of derivative contract				12 months

v3.24.0.1

Segment Information - Narrative (Details)	3 Months Ended
	Dec. 29, 2023 line_of_business segment
Segment Reporting [Abstract]
Number of operating segments | segment	4
Number of lines business | line_of_business	2

v3.24.0.1

Segment Information - Schedule of Total Revenues, Segment Operating Profit and Total Asset for Reporting Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Segment Reporting Information [Line Items]
Revenues	$ 4,159,225	$ 3,798,668
Total Segment Operating Profit	204,063	237,805
Restructuring, Transaction and Other Charges	(55,318)	(40,342)
Total Other Expense, net	(38,314)	(40,324)
Earnings from Continuing Operations Before Taxes	165,749	197,481
Inventory	15,000
Amortization of intangible assets	51,119
Intangible impairment charge	10,000
One-time benefit program changes		41,000
Restructuring charges	41,320
Real estate related impairments and other transformation		27,100
Professional Services and Employee Seperation
Segment Reporting Information [Line Items]
Restructuring, Transaction and Other Charges	(11,000)
CH2M HILL Companies, Ltd.
Segment Reporting Information [Line Items]
Restructuring charges	41,369	34,443
Operating profit (mainly SG&A) | CH2M HILL Companies, Ltd.
Segment Reporting Information [Line Items]
Restructuring charges	41,369	35,072
Operating profit (mainly SG&A) | CH2M HILL Companies, Ltd. | Professional Services and Employee Seperation
Segment Reporting Information [Line Items]
Restructuring charges	40,100
Operating Segments
Segment Reporting Information [Line Items]
Total Segment Operating Profit	380,441	371,833
Corporate
Segment Reporting Information [Line Items]
Other Corporate Expenses	(121,060)	(93,686)
Corporate | CH2M HILL Companies, Ltd.
Segment Reporting Information [Line Items]
Restructuring charges	29,002	3,333
Corporate | Other Expense
Segment Reporting Information [Line Items]
Amortization of intangible assets		49,800
Critical Mission Solutions | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,128,603	1,075,175
Total Segment Operating Profit	93,407	82,220
Critical Mission Solutions | Operating Segments | CH2M HILL Companies, Ltd.
Segment Reporting Information [Line Items]
Restructuring charges	2,163	2,212
People & Places Solutions | Operating Segments
Segment Reporting Information [Line Items]
Revenues	2,470,441	2,226,985
Total Segment Operating Profit	224,998	226,619
Divergent Solutions | Operating Segments
Segment Reporting Information [Line Items]
Revenues	254,180	214,465
Total Segment Operating Profit	7,581	11,967
Divergent Solutions | Operating Segments | CH2M HILL Companies, Ltd.
Segment Reporting Information [Line Items]
Restructuring charges	900	1,581
PA Consulting | Operating Segments
Segment Reporting Information [Line Items]
Revenues	306,001	282,043
Total Segment Operating Profit	54,455	51,027
PA Consulting | Operating Segments | CH2M HILL Companies, Ltd.
Segment Reporting Information [Line Items]
Restructuring charges	$ 1,175	$ 0

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