IT Gartner Inc

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Business. Gartner, Inc. (NYSE: IT) delivers actionable, objective insight that drives smarter decisions and stronger performance on an organization’s mission-critical priorities.

Segments. Gartner delivers its products and services globally through three business segments: Research, Conferences and Consulting. Revenues and other financial information for the Company’s segments are discussed in Note 7 — Segment Information.

Basis of presentation. The accompanying interim Condensed Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”), as defined in Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 270 for interim financial information and with the applicable instructions of U.S. Securities and Exchange Commission (“SEC”) Rule 10-01 of Regulation S-X on Form 10-Q, and should be read in conjunction with the consolidated financial statements and related notes of the Company in its Annual Report on Form 10-K for the year ended December 31, 2023.

The fiscal year of Gartner is the twelve-month period from January 1 through December 31. In the opinion of management, all normal recurring accruals and adjustments considered necessary for a fair presentation of financial position, results of operations and cash flows at the dates and for the periods presented herein have been included. The results of operations for the three and six months ended June 30, 2024 may not be indicative of the results of operations for the remainder of 2024 or beyond. When used in these notes, the terms “Gartner,” the “Company,” “we,” “us,” or “our” refer to Gartner, Inc. and its consolidated subsidiaries.

Principles of consolidation. The accompanying interim Condensed Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated.

Use of estimates. The preparation of the accompanying interim Condensed Consolidated Financial Statements requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities, and reported amounts of revenues and expenses. Such estimates include the valuation of fees receivable, goodwill, intangible assets and other long-lived assets, as well as tax accruals and other liabilities. In addition, estimates are used in revenue recognition, income tax expense or benefit, performance-based compensation charges, depreciation and amortization. Management believes its use of estimates in these interim Condensed Consolidated Financial Statements to be reasonable.

Management continually evaluates and revises its estimates using historical experience and other factors, including the general economic environment and actions it may take in the future. Management adjusts these estimates when facts and circumstances dictate. However, these estimates may involve significant uncertainties and judgments and cannot be determined with precision. In addition, these estimates are based on management’s best judgment at a point in time. As a result, differences between estimates and actual results could be material and would be reflected in the Company’s consolidated financial statements in future periods.

Cash and cash equivalents and restricted cash. Below is a table presenting the beginning-of-period and end-of-period cash amounts from the Company’s Condensed Consolidated Balance Sheets and the total cash amounts presented in the Condensed Consolidated Statements of Cash Flows (in thousands).

						June 30,						December 31,
						2024						2023
Cash and cash equivalents						$	1,235,785					$	1,318,999
Restricted cash classified in (1):
Prepaid expenses and other current assets						—						600
Cash and cash equivalents and restricted cash						$	1,235,785					$	1,319,599

(1)Restricted cash consisted of an escrow account established in connection with one of the Company’s business acquisitions. Generally, such cash is restricted to use due to provisions contained in the underlying acquisition agreement. During the

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three months ended June 30, 2024,the Company paid $0.6 million of restricted cash for deferred consideration related to a 2022 acquisition.

Revenue recognition. Revenue is recognized in accordance with the requirements of FASB ASC Topic 606, Revenue from Contracts with Customers (“ASC Topic 606”). Revenue is only recognized when all of the required criteria for revenue recognition have been met. The accompanying Condensed Consolidated Statements of Operations present revenue net of any sales or value-added taxes that we collect from customers and remit to government authorities. ASC Topic 270 requires certain disclosures in interim financial statements around the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Note 4 — Revenue and Related Matters provides additional information regarding the Company’s revenues.

Gain on event cancellation insurance claims. In February 2023, the Company received $3.1 million of proceeds related to 2020 event cancellation insurance claims. The Company does not record any gain on insurance claims in excess of expenses incurred until the receipt of the insurance proceeds is deemed to be realizable.

Accounting standards issued but not yet adopted. The FASB has issued accounting standards that have not yet become effective as of June 30, 2024 and may impact the Company’s Consolidated Financial Statements or related disclosures in future periods. The standards and their potential impacts are discussed below.

Income Taxes— In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures (“ASU No. 2023-09”). The amendments in this ASU are expected to enhance the transparency and decision usefulness of income tax disclosures. ASU 2023-09 requires entities to enhance income tax disclosures primarily related to the rate reconciliation and income taxes paid information. Companies will need to disaggregate the disclosure of income taxes paid (net of refunds received) by federal, state, and foreign taxes on an annual basis. Additionally, on an annual basis, companies would disclose income taxes paid disaggregated by individual jurisdiction using a quantitative threshold of 5% of total income taxes paid. Public business entities would also be required to provide, on an annual basis, rate reconciliation information by specific categories, including state and local income tax, the effect of cross-border tax laws, foreign tax effects, changes in prior year unrecognized tax benefits, and tax credits, among others. Additionally, some categories would then require disaggregation based on a quantitative threshold of 5%. The foreign tax effect category requires disaggregation by both jurisdiction and nature. The ASU also requires additional qualitative disclosures. All public entities will be required to report income tax information in accordance with the new guidance starting in annual periods beginning after December 15, 2024. The Company expects this ASU to only impact its disclosures with no impacts to the Company’s results of operations, cash flows, and financial condition.

Segment Reporting— In November 2023, the FASB issued ASU 2023-07, Segment Reporting: Improvements in Reportable Segment Disclosures (“ASU No. 2023-07”). The amendments in the ASU are expected to improve disclosures about a public entity’s reportable segments and addresses requests from investors and other allocators of capital for additional, more detailed information about a reportable segment’s expenses. ASU 2023-07 requires public companies to disclose, on an annual and interim basis, significant expenses that are regularly provided to the chief operating decision maker (CODM) and included within each reported measure of segment profit and loss. The amendments in the ASU require that a public company provide all annual disclosures about a reportable segment’s profit or loss and assets currently required under ASC 280 in interim periods. The amendments in the ASU also require that a public entity disclose, on an annual and interim basis, an amount for other segment items by reportable segment and a description of its composition. The other segment items category is the difference between segment revenue less the significant expenses disclosed and each reported measure of segment profit or loss. The amendments in the ASU, among other items, also requires that a public company disclose the title and position of the CODM and an explanation of how the CODM uses the reported measure(s) of segment profit or loss in assessing segment performance and deciding how to allocate resources. The ASU applies to all public entities that are required to report segment information in accordance with Topic 280. All public entities will be required to report segment information in accordance with the new guidance starting in annual periods beginning after December 15, 2023 and for interim periods within annual periods beginning after December 15, 2024. The Company expects this ASU to only impact its disclosures with no impacts to the Company’s results of operations, cash flows, and financial condition.

Acquisition

In September 2023, the Company acquired 100% of a formerly independent sales agent of Gartner research products in the Czech Republic for an aggregate purchase price of $7.9 million, including cash acquired and deferred consideration. During the

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six months ended June 30, 2024, the Company paid $2.0 million of deferred consideration. The allocation of the purchase price is preliminary with respect to certain tax matters.

Divestiture

Goodwill

Goodwill represents the excess of the purchase price of acquired businesses over the estimated fair values of the tangible and identifiable intangible net assets acquired. Evaluations of the recoverability of goodwill are performed in accordance with FASB ASC Topic 350, which requires an annual assessment of potential goodwill impairment at the reporting unit level and whenever events or changes in circumstances indicate that the carrying value of goodwill may not be recoverable.

When performing the annual assessment of the recoverability of goodwill, the Company initially performs a qualitative analysis evaluating whether any events or circumstances occurred or exist that provide evidence that it is more likely than not that the fair value of any of the Company’s reporting units is less than the related carrying amount. If the Company does not believe that it is more likely than not that the fair value of any of the Company’s reporting units is less than the related carrying amount, then no quantitative impairment test is performed. However, if the results of the qualitative assessment indicate that it is more likely than not that the fair value of a reporting unit is less than its respective carrying amount, then a quantitative impairment test is performed. Evaluating the recoverability of goodwill requires judgments and assumptions regarding future trends and events. As a result, both the precision and reliability of the estimates are subject to uncertainty.

The Company’s most recent annual impairment test of goodwill was a qualitative analysis conducted during the quarter ended September 30, 2023 that indicated no impairment. Subsequent to completing the 2023 annual impairment test, there were no events or changes in circumstances noted that required an interim impairment test.

The table below presents changes to the carrying amount of goodwill by segment during the six months ended June 30, 2024 (in thousands).

			Research						Conferences						Consulting						Total
Balance at December 31, 2023 (1)			$	2,657,549					$	183,997					$	95,714					$	2,937,260
Foreign currency translation impact			(2,789)						(43)						(206)						(3,038)
Balance at June 30, 2024 (1)			$	2,654,760					$	183,954					$	95,508					$	2,934,222

(1)The Company does not have any accumulated goodwill impairment losses.

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Finite-Lived Intangible Assets

The tables below present reconciliations of the carrying amounts of the Company’s finite-lived intangible assets as of the dates indicated (in thousands).

June 30, 2024						Customer Relationships						Technology-related												Other						Total
Gross cost at December 31, 2023						$	1,077,183					$	11,200											$	10,200					$	1,098,583
Foreign currency translation impact						(2,110)						—												—						(2,110)
Gross cost						1,075,073						11,200												10,200						1,096,473
Accumulated amortization (1)						(623,426)						(11,200)												(6,826)						(641,452)
Balance at June 30, 2024						$	451,647					$	—											$	3,374					$	455,021

December 31, 2023						Customer Relationships						Technology-related												Other						Total
Gross cost						$	1,077,183					11,200												$	10,200					$	1,098,583
Accumulated amortization (1)						(580,937)						(9,333)												(6,355)						(596,625)
Balance at December 31, 2023						$	496,246					$	1,867											$	3,845					$	501,958

(1) Finite-lived intangible assets are amortized using the straight-line method over the following periods: Customer relationships—6 to 13 years; Technology-related—3 years; and Other—11 years.

Amortization expense related to finite-lived intangible assets was $22.9 million during both the three months ended June 30, 2024 and 2023, and $45.9 million and $45.6 million during the six months ended June 30, 2024 and 2023, respectively. The estimated future amortization expense by year for finite-lived intangible assets is presented in the table below (in thousands).

2024 (remaining six months)			$	44,054
2025			81,308
2026			78,634
2027			78,026
2028			76,554
Thereafter			96,445
			$	455,021

Disaggregated Revenue — The Company’s disaggregated revenue by reportable segment is presented in the tables below for the periods indicated (in thousands).

By Primary Geographic Market (1)

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Three Months Ended June 30, 2024
Primary Geographic Market			Research			Conferences			Consulting			Total
United States and Canada			$	832,719		$	131,119		$	90,943		$	1,054,781
Europe, Middle East and Africa			287,650			46,629			34,681			368,960
Other International			145,623			8,336			17,360			171,319
Total revenues			$	1,265,992		$	186,084		$	142,984		$	1,595,060
Three Months Ended June 30, 2023
Primary Geographic Market			Research			Conferences			Consulting			Total
United States and Canada			$	812,724		$	123,243		$	76,413		$	1,012,380
Europe, Middle East and Africa			258,255			38,803			33,865			330,923
Other International			136,906			6,851			16,125			159,882
Total revenues			$	1,207,885		$	168,897		$	126,403		$	1,503,185
Six Months Ended June 30, 2024
Primary Geographic Market			Research			Conferences			Consulting			Total
United States and Canada			$	1,667,940		$	179,209		$	169,482		$	2,016,631
Europe, Middle East and Africa			575,193			56,957			71,283			703,433
Other International			291,031			19,987			36,904			347,922
Total revenues			$	2,534,164		$	256,153		$	277,669		$	3,067,986
Six Months Ended June 30, 2023
Primary Geographic Market			Research			Conferences			Consulting			Total
United States and Canada			$	1,622,123		$	172,018		$	153,388		$	1,947,529
Europe, Middle East and Africa			526,912			48,010			66,803			641,725
Other International			276,041			13,511			33,248			322,800
Total revenues			$	2,425,076		$	233,539		$	253,439		$	2,912,054

(1)Revenue is reported based on where the sale is fulfilled.

The Company’s revenue is generated primarily through direct sales to clients by domestic and international sales forces and a network of independent international sales agents.

By Timing of Revenue Recognition

Three Months Ended June 30, 2024
Timing of Revenue Recognition			Research			Conferences			Consulting			Total
Transferred over time (1)			$	1,187,626		$	—		$	106,584		$	1,294,210
Transferred at a point in time (2)			78,366			186,084			36,400			300,850
Total revenues			$	1,265,992		$	186,084		$	142,984		$	1,595,060
Three Months Ended June 30, 2023
Timing of Revenue Recognition			Research			Conferences			Consulting			Total
Transferred over time (1)			$	1,113,328		$	—		$	103,921		$	1,217,249
Transferred at a point in time (2)			94,557			168,897			22,482			285,936
Total revenues			$	1,207,885		$	168,897		$	126,403		$	1,503,185

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Six Months Ended June 30, 2024
Timing of Revenue Recognition			Research			Conferences			Consulting			Total
Transferred over time (1)			$	2,369,894		$	—		$	215,171		$	2,585,065
Transferred at a point in time (2)			164,270			256,153			62,498			482,921
Total revenues			$	2,534,164		$	256,153		$	277,669		$	3,067,986
Six Months Ended June 30, 2023
Timing of Revenue Recognition			Research			Conferences			Consulting			Total
Transferred over time (1)			$	2,223,124		$	—		$	200,928		$	2,424,052
Transferred at a point in time (2)			201,952			233,539			52,511			488,002
Total revenues			$	2,425,076		$	233,539		$	253,439		$	2,912,054

(1)Research revenues in this category are recognized in connection with performance obligations that are satisfied over time using a time-elapsed output method to measure progress. Consulting revenues in this category are recognized over time using costs incurred to date relative to total estimated costs at completion.

(2)The revenues in this category are recognized in connection with performance obligations that are satisfied at the point in time that the contractual deliverables are provided to the customer.

Performance Obligations — For customer contracts that are greater than one year in duration, the aggregate amount of the transaction price allocated to performance obligations that were unsatisfied (or partially unsatisfied) as of June 30, 2024 was approximately $5.6 billion. The Company expects to recognize $1.8 billion, $2.7 billion and $1.1 billion of this revenue (most of which pertains to Research) during the remainder of 2024, the year ending December 31, 2025 and thereafter, respectively. The Company applies a practical expedient that is permitted under ASC Topic 606 and, accordingly, it does not disclose such performance obligation information for customer contracts that have original durations of one year or less. The Company’s performance obligations for contracts meeting this ASC Topic 606 disclosure exclusion primarily include: (i) stand-ready services under Research subscription contracts; (ii) holding conferences and meetings where attendees and exhibitors can participate; and (iii) providing customized Consulting solutions for clients under fixed fee and time and materials engagements. The remaining duration of these performance obligations is generally less than one year, which aligns with the period that the parties have enforceable rights and obligations under the affected contracts.

Customer Contract Assets and Liabilities — The timing of the recognition of revenue and the amount and timing of the Company’s billings and cash collections, including upfront customer payments, result in the recognition of both assets and liabilities on the Company’s Condensed Consolidated Balance Sheets. The table below provides information regarding certain of the Company’s balance sheet accounts that pertain to its contracts with customers (in thousands).

			June 30,						December 31,
			2024						2023
Assets:
Fees receivable, gross (1)			$	1,413,321					$	1,610,228
Contract assets recorded in Prepaid expenses and other current assets (2)			$	29,773					$	28,791
Contract liabilities:
Deferred revenues (current liability) (3)			$	2,626,511					$	2,640,515
Non-current deferred revenues recorded in Other liabilities (3)			25,082						33,490
Total contract liabilities			$	2,651,593					$	2,674,005

(1)Fees receivable represent an unconditional right to payment from the Company’s customers and include both billed and unbilled amounts.

(2)Contract assets represent recognized revenue for which the Company does not have an unconditional right to payment as of the balance sheet date because the project may be subject to a progress billing milestone or some other billing restrictions.

(3)Deferred revenues represent amounts (i) for which the Company has received an upfront customer payment or (ii) that pertain to recognized fees receivable. Both situations occur before the completion of the Company’s performance obligation(s).

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Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of shares of Common Stock outstanding during the period. Diluted EPS reflects the potential dilution of securities that could share in earnings. Potential shares of common stock are excluded from the computation of diluted earnings per share when their effect would be anti-dilutive.

The table below sets forth the calculation of basic and diluted income per share for the periods indicated (in thousands, except per share data).

						Three Months Ended												Six Months Ended
						June 30,												June 30,
						2024						2023						2024						2023
Numerator:
Net income used for calculating basic and diluted income per share						$	229,548					$	198,043					$	440,093					$	493,826
Denominator:
Weighted average common shares used in the calculation of basic income per share						77,816						79,285						78,078						79,368
Dilutive effect of outstanding awards associated with stock-based compensation plans (1)						472						535						573						647
Shares used in the calculation of diluted income per share						78,288						79,820						78,651						80,015
Basic income per share						$	2.95					$	2.50					$	5.64					$	6.22
Diluted income per share						$	2.93					$	2.48					$	5.60					$	6.17

The Company grants stock-based compensation awards as an incentive for employees and directors to contribute to the Company’s long-term success. The Company currently awards stock-settled stock appreciation rights, service-based and performance-based restricted stock units, and common stock equivalents. As of June 30, 2024, the Company had 5.6 million shares of its common stock, par value $0.0005 per share, (the “Common Stock”) available for stock-based compensation awards under the Gartner, Inc. Long-Term Incentive Plan as amended and restated in June 2023 (the “Plan”).

The tables below summarize the Company’s stock-based compensation expense by award type and expense category line item during the periods indicated (in millions).

						Three Months Ended												Six Months Ended
						June 30,												June 30,
Award type						2024						2023						2024						2023
Stock appreciation rights						$	3.0					$	3.1					$	7.6					$	5.6
Restricted stock units						36.4						28.9						82.0						71.1
Common stock equivalents						0.3						0.3						0.6						0.6
Total (1)						$	39.7					$	32.3					$	90.2					$	77.3

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						Three Months Ended												Six Months Ended
						June 30,												June 30,
Expense category line item						2024						2023						2024						2023
Cost of services and product development						$	15.3					$	12.7					$	34.8					$	31.0
Selling, general and administrative						24.4						19.6						55.4						46.3
Total (1)						$	39.7					$	32.3					$	90.2					$	77.3

(1)Includes costs of $18.4 million and $13.1 million during the three months ended June 30, 2024 and 2023, respectively, and $49.0 million and $39.9 million during the six months ended June 30, 2024 and 2023, respectively, for awards to retirement-eligible employees. Those awards vest on an accelerated basis.

The Company’s products and services are delivered through three segments – Research, Conferences and Consulting, as described below.

•Research equips executives and their teams from every function and across all industries with actionable, objective insight, guidance and tools. Our experienced experts deliver all this value informed by an unmatched combination of practitioner-sourced and data-driven research to help our clients address their mission critical priorities.

•Conferences provides executives and teams across an organization the opportunity to learn, share and network. From our Gartner Symposium/Xpo series, to industry-leading conferences focused on specific business roles and topics, to peer-driven sessions, our offerings enable attendees to experience the best of Gartner insight and guidance.

•Consulting serves senior executives leading technology-driven strategic initiatives leveraging the power of Gartner’s actionable, objective insight. Through custom analysis and on-the-ground support we enable optimized technology investments and stronger performance on our clients’ mission critical priorities.

The Company evaluates segment performance and allocates resources based on gross contribution margin. Gross contribution, as presented in the tables below, is defined as operating income or loss excluding certain Cost of services and product development expenses, Selling, general and administrative expenses, Depreciation, Amortization of intangibles, Acquisition and integration charges and Gain from sale of divested operation. Certain bonus and fringe benefit costs included in consolidated Cost of services and product development are not allocated to segment expense. The accounting policies used by the reportable segments are the same as those used by the Company. There are no intersegment revenues. The Company does not identify or allocate assets, including capital expenditures, by reportable segment. Accordingly, assets are not reported by segment because the information is not available by segment and is not reviewed in the evaluation of segment performance or in making decisions regarding the allocation of resources.

The tables below present information about the Company’s reportable segments for the periods indicated (in thousands).

Three Months Ended June 30, 2024			Research						Conferences						Consulting						Consolidated
Revenues			$	1,265,992					$	186,084					$	142,984					$	1,595,060
Gross contribution			933,121						108,112						53,719						1,094,952
Corporate and other expenses																					(776,169)
Operating income																					$	318,783
Three Months Ended June 30, 2023			Research						Conferences						Consulting						Consolidated
Revenues			$	1,207,885					$	168,897					$	126,403					$	1,503,185
Gross contribution			885,282						98,450						47,321						1,031,053
Corporate and other expenses																					(747,946)
Operating income																					$	283,107

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Six Months Ended June 30, 2024			Research						Conferences						Consulting						Consolidated
Revenues			$	2,534,164					$	256,153					$	277,669					$	3,067,986
Gross contribution			1,877,690						131,367						108,006						2,117,063
Corporate and other expenses																					(1,524,395)
Operating income																					$	592,668
Six Months Ended June 30, 2023			Research						Conferences						Consulting						Consolidated
Revenues			$	2,425,076					$	233,539					$	253,439					$	2,912,054
Gross contribution			1,784,796						125,238						98,129						2,008,163
Corporate and other expenses																					(1,317,099)
Operating income																					$	691,064

The table below provides a reconciliation of total segment gross contribution to net income for the periods indicated (in thousands).

						Three Months Ended												Six Months Ended
						June 30,												June 30,
						2024						2023						2024						2023
Total segment gross contribution						$	1,094,952					$	1,031,053					$	2,117,063					$	2,008,163
Costs and expenses:
Cost of services and product development - unallocated (1)						13,206						15,286						21,832						18,666
Selling, general and administrative						712,071						680,168						1,401,904						1,337,258
Depreciation and amortization						50,534						46,613						99,841						93,244
Acquisition and integration charges						358						1,973						818						3,341
Gain from sale of divested operation						—						3,906						—						(135,410)
Operating income						318,783						283,107						592,668						691,064
Interest expense and other, net						(19,486)						(18,983)						(33,814)						(48,740)
Gain on event cancellation insurance claims						—						—						—						3,077
Less: Provision for income taxes						69,749						66,081						118,761						151,575
Net income						$	229,548					$	198,043					$	440,093					$	493,826

(1)The unallocated amounts consist of certain bonus and fringe costs recorded in consolidated Cost of services and product development that are not allocated to segment expense. The Company’s policy is to allocate bonuses to segments at 100% of a segment employee’s target bonus. Amounts above or below 100% are absorbed by corporate.

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The Company’s total outstanding borrowings are summarized in the table below (in thousands).

						June 30,						December 31,
Description						2024						2023
2024 Credit Agreement - Revolving facility (1), (2)						$	274,400					$	—
2020 Credit Agreement - Term loan facility						—						274,400
2020 Credit Agreement - Revolving credit facility						—						—
4.50% Senior Notes due 2028 (“2028 Notes”)						800,000						800,000
3.625% Senior Notes due 2029 (“2029 Notes”)						600,000						600,000
3.75% Senior Notes due 2030 (“2030 Notes”)						800,000						800,000
Other (3)						5,000						5,000
Principal amount outstanding (4)						2,479,400						2,479,400
Less: deferred financing fees (5)						(21,528)						(21,104)
Net balance sheet carrying amount						$	2,457,872					$	2,458,296

(1)The contractual annualized interest rate as of June 30, 2024 on the 2024 Credit Agreement was 6.725%, which consisted of Term Secured Overnight Financing Rate (“SOFR”) of 5.375% plus a margin of 1.350%. However, the Company has an interest rate swap contract that effectively converts the floating SOFR on outstanding amounts to a fixed base rate.

(2)The Company had approximately $0.7 billion of available borrowing capacity on the 2024 Credit Agreement revolver (not including the expansion feature) as of June 30, 2024.

(3)Consists of a State of Connecticut economic development loan originated in 2019 with a 10-year maturity and bears interest at a fixed rate of 1.75%. This loan may be repaid at any time by the Company without penalty.

(4)The weighted average annual effective rate on the Company’s outstanding debt for the three and six months ended June 30, 2024, including the effects of its interest rate swaps discussed below, was 5.03% and 5.02%, respectively.

(5)Deferred financing fees are being amortized to Interest expense, net over the term of the related debt obligation.

2024 Credit Agreement

On March 26, 2024, the Company entered into a Credit Agreement (the “2024 Credit Agreement”) among the Company, as borrower, the lenders party thereto and JPMorgan Chase Bank, N.A., as administrative agent (the “Administrative Agent”).

The 2024 Credit Agreement provides for a $1.0 billion senior unsecured five-year revolving facility. The facility may be increased, at the Company’s option and under certain conditions, by up to an additional $750 million in the aggregate. The facility may be used for revolving loans, and up to $75.0 million may be used for letters of credit. The revolving loans may be borrowed, repaid and re-borrowed until March 26, 2029, at which time all amounts borrowed must be repaid, subject to customary extension mechanics.

On March 26, 2024, the Company borrowed $274.4 million under the 2024 Credit Agreement. The initial borrowing was used to repay the outstanding amounts under the 2020 Credit Agreement. Additional amounts borrowed under the 2024 Credit Agreement will be used for working capital needs and general corporate purposes of the Company and its subsidiaries, including the funding of acquisitions and investments, payment of capital expenditures and the repurchase of shares.

Interest under the revolving facility accrues, at a variable rate, based on, at our option, (i) the Secured Overnight Funding Rate (“SOFR”) plus a credit spread adjustment of 0.10% or (ii) an alternate base rate (“Base Rate”) plus, in each case, an applicable margin, and is payable monthly. The applicable margin ranges between 1.125% and 1.75%, depending on the lower rate determined by either the Company’s leverage ratio or the credit rating of the Company’s senior unsecured debt. At June 30, 2024, the applicable all-in margin on the revolving facility was 1.35% (including the credit spread adjustment). The commitment fee payable on the unused portion of the facility is equal to between 0.125% and 0.25% based on utilization of the facility. The Company has also agreed to pay customary letter of credit fees.

The 2024 Credit Agreement contains certain customary restrictive loan covenants, including, among others, a financial covenant requiring a maximum leverage ratio and covenants limiting the Company’s ability to grant liens, make acquisitions, be acquired and the ability of the Company’s subsidiaries to incur indebtedness. Subsidiaries of the Company are not required to guarantee obligations under the facility, unless such subsidiaries guarantee indebtedness in excess of a threshold set out in the 2024 Credit Agreement, subject to certain limitations and exceptions.

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The 2024 Credit Agreement contains customary events of default that include, among others, non-payment of principal, interest or fees, material inaccuracy of representations and warranties, violation of covenants, cross defaults to certain other indebtedness, bankruptcy and insolvency events, ERISA defaults, material judgments, and events constituting a change of control. The occurrence of an event of default allows the lenders to terminate their obligations to lend under the 2024 Credit Agreement and could result in the acceleration of the Company’s obligations under the facility.

2029 Notes

On June 18, 2021, the Company issued $600.0 million aggregate principal amount of 3.625% Senior Notes due 2029. The 2029 Notes were issued pursuant to an indenture, dated as of June 18, 2021 (the “2029 Note Indenture”), among the Company, the guarantors party thereto and U.S. Bank National Association, as trustee.

The 2029 Notes were issued at an issue price of 100.0% and bear interest at a rate of 3.625% per annum. Interest on the 2029 Notes is payable on June 15 and December 15 of each year, beginning on December 15, 2021. The 2029 Notes will mature on June 15, 2029.

The Company may redeem some or all of the 2029 Notes at any time on or after June 15, 2024 for cash at the redemption prices set forth in the 2029 Notes Indenture, plus accrued and unpaid interest to, but excluding, the redemption date. Prior to June 15, 2024, the Company may redeem up to 40% of the aggregate principal amount of the 2029 Notes in connection with certain equity offerings, or some or all of the 2029 Notes with a “make-whole” premium, in each case subject to the terms set forth in the 2029 Note Indenture.

On March 26, 2024, in connection with the closing of the 2024 Credit Agreement and as a result of the termination of the 2020 Credit Agreement, the Company’s subsidiaries that guaranteed the Company’s 2029 Notes were released from their guarantee obligations with respect to the Notes, in accordance with the terms of the indenture pursuant to which the 2029 Notes was issued.

2030 Notes

On September 28, 2020, the Company issued $800.0 million aggregate principal amount of 3.75% Senior Notes due 2030. The 2030 Notes were issued pursuant to an indenture, dated as of September 28, 2020 (the “2030 Note Indenture”), among the Company, the guarantors party thereto and U.S. Bank National Association, as trustee.

The 2030 Notes were issued at an issue price of 100.0% and bear interest at a rate of 3.75% per annum. Interest on the 2030 Notes is payable on April 1 and October 1 of each year, beginning on April 1, 2021. The 2030 Notes will mature on October 1, 2030.

The Company may redeem some or all of the 2030 Notes at any time on or after October 1, 2025 for cash at the redemption prices set forth in the 2030 Note Indenture, plus accrued and unpaid interest to, but excluding, the redemption date. Prior to October 1, 2025, the Company may redeem up to 40% of the aggregate principal amount of the 2030 Notes in connection with certain equity offerings, or some or all of the 2030 Notes with a “make-whole” premium, in each case subject to the terms set forth in the 2030 Note Indenture.

On March 26, 2024, in connection with the closing of the 2024 Credit Agreement and as a result of the termination of the 2020 Credit Agreement, the Company’s subsidiaries that guaranteed the Company’s 2030 Notes were released from their guarantee obligations with respect to the Notes, in accordance with the terms of the indenture pursuant to which the 2030 Notes was issued.

2028 Notes

On June 22, 2020, the Company issued $800.0 million aggregate principal amount of 4.50% Senior Notes due 2028. The 2028 Notes were issued pursuant to an indenture, dated as of June 22, 2020 (the “2028 Note Indenture”), among the Company, the guarantors party thereto and U.S. Bank National Association, as trustee.

The 2028 Notes were issued at an issue price of 100.0% and bear interest at a rate of 4.50% per annum. Interest on the 2028 Notes is payable on January 1 and July 1 of each year, beginning on January 1, 2021. The 2028 Notes will mature on July 1, 2028.

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The Company may redeem some or all of the 2028 Notes at any time on or after July 1, 2023 for cash at the redemption prices set forth in the 2028 Note Indenture, plus accrued and unpaid interest to, but excluding, the redemption date. Prior to July 1, 2023, the Company may redeem up to 40% of the aggregate principal amount of the 2028 Notes in connection with certain equity offerings, or some or all of the 2028 Notes with a “make-whole” premium, in each case subject to the terms set forth in the 2028 Note Indenture.

On March 26, 2024, in connection with the closing of the 2024 Credit Agreement and as a result of the termination of the 2020 Credit Agreement, the Company’s subsidiaries that guaranteed the Company’s 2028 Notes were released from their guarantee obligations with respect to the Notes, in accordance with the terms of the indenture pursuant to which the 2028 Notes was issued.

2020 Credit Agreement

Prior to entering into the 2024 Credit Agreement, the Company had a credit facility that provided for a $400.0 million Term loan facility and a $1.0 billion Revolving credit facility (the “2020 Credit Agreement”). The 2020 Credit Agreement contained certain customary restrictive loan covenants, including, among others, financial covenants that applied a maximum consolidated leverage ratio and a minimum consolidated interest expense coverage ratio. On March 26, 2024, concurrently with the Company’s entry into the 2024 Credit Agreement, the Company terminated the 2020 Credit Agreement and repaid all amounts outstanding.

Interest Rate Swap

As of June 30, 2024, the Company had one fixed-for-floating interest rate swap contract with a notional value of $350.0 million that matures in September 2025. Under the contract, the Company pays a base fixed rate of 2.98% and in return receives a floating Term SOFR base rate on 30-day notional borrowings.

Effective June 30, 2020, the Company de-designated all of its interest rate swaps and discontinued hedge accounting. Accordingly, subsequent changes to the fair value of the interest rate swap are recorded in Other income, net. The amounts previously recorded in Accumulated other comprehensive loss are amortized into Interest expense, net over the terms of the hedged forecasted interest payments. As of June 30, 2024, $22.6 million is remaining in Accumulated other comprehensive loss, net. See Note 11 — Derivatives and Hedging for the amounts remaining in Accumulated other comprehensive loss, net of tax effect, at June 30, 2024 and December 31, 2023. See Note 12 — Fair Value Disclosures for a discussion of the fair values of Company’s interest rate swaps.

Share Repurchase Authorization

In 2015, the Company’s Board of Directors (the “Board”) authorized a share repurchase program to repurchase up to $1.2 billion of the Company’s common stock. The Board authorized incremental share repurchases of up to an aggregate additional $3.5 billion of the Company’s common stock during 2021, 2022, and 2023. As of June 30, 2024, $487.8 million remained available under the share repurchase program. The Company may repurchase its common stock from time-to-time in amounts, at prices and in the manner that the Company deems appropriate, subject to the availability of stock, prevailing market conditions, the trading price of the stock, the Company’s financial performance and other conditions. Repurchases may be made through open market purchases (which may include repurchase plans designed to comply with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended), accelerated share repurchases, private transactions or other transactions and will be funded by cash on hand and borrowings. Repurchases may also be made from time-to-time in connection with the settlement of the Company’s stock-based compensation awards.

The Company’s share repurchase activity is presented in the table below for the periods indicated.

						Three Months Ended												Six Months Ended
						June 30,												June 30,
						2024						2023						2024						2023
Number of shares repurchased (1)						778,575						423,833						1,268,309						751,513
Cash paid for repurchased shares (in thousands) (2)						$	339,593					$	131,522					$	564,717					$	238,372

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(1)The average purchase price for repurchased shares was $442.60 and $312.95 for the three months ended June 30, 2024 and 2023, respectively, and $449.19 and $321.34 for the six months ended June 30, 2024 and 2023, respectively. The repurchased shares during the three and six months ended June 30, 2024 and 2023 included purchases for both open market purchases and stock-based compensation award settlements.

(2)The cash paid for repurchased shares during the six months ended June 30, 2024 excluded $5.0 million of open market purchases with trade dates in June 2024 that settled in July 2024 and excise tax accrued. The cash paid for repurchased shares during the six months ended June 30, 2023 excluded $3.1 million of open market purchases with trade dates in June 2023 that settled in July 2023 and excise tax accrued. The cash paid for repurchased shares during the three months ended June 30, 2024 excluded $5.0 million of open market purchases with trade dates in June 2024 that settled in July 2024 and excise tax accrued. The cash paid for repurchased shares during the three months ended June 30, 2023 included $2.0 million of open market purchases with trade dates in March 2023 that settled in April 2023, and excluded $3.1 million of open market purchases with trade dates in June 2023 that settled in July 2023 and excise tax accrued.

Accumulated Other Comprehensive Loss, net (“AOCL”)

The tables below provide information about the changes in AOCL by component and the related amounts reclassified out of AOCL to income during the periods indicated (net of tax, in thousands) (1).

Three Months Ended June 30, 2024

						Interest Rate Swaps						Defined Benefit Pension Plans						Foreign Currency Translation Adjustments						Total
Balance – March 31, 2024						$	(20,561)					$	(5,680)					$	(56,145)					$	(82,386)
Other comprehensive income (loss) activity during the period:
Change in AOCL before reclassifications to income						—						—						(2,967)						(2,967)
Reclassifications from AOCL to income (2), (3)						3,649						51						—						3,700
Other comprehensive income (loss), net						3,649						51						(2,967)						733
Balance – June 30, 2024						$	(16,912)					$	(5,629)					$	(59,112)					$	(81,653)

Three Months Ended June 30, 2023

						Interest Rate Swaps						Defined Benefit Pension Plans						Foreign Currency Translation Adjustments						Total
Balance – March 31, 2023						$	(35,414)					$	(4,213)					$	(56,283)					$	(95,910)
Other comprehensive income (loss) activity during the period:
Change in AOCL before reclassifications to income						—						—						6,932						6,932
Reclassifications from AOCL to income (2), (3)						3,818						33						—						3,851
Other comprehensive income (loss), net						3,818						33						6,932						10,783
Balance – June 30, 2023						$	(31,596)					$	(4,180)					$	(49,351)					$	(85,127)

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Six Months Ended June 30, 2024
						Interest Rate Swaps						Defined Benefit Pension Plans						Foreign Currency Translation Adjustments						Total
Balance – December 31, 2023						$	(24,162)					$	(5,731)					$	(46,438)					$	(76,331)
Other comprehensive income (loss) activity during the period:
Change in AOCL before reclassifications to income						—						—						(12,674)						(12,674)
Reclassifications from AOCL to income (2), (3)						7,250						102						—						7,352
Other comprehensive income (loss), net						7,250						102						(12,674)						(5,322)
Balance – June 30, 2024						$	(16,912)					$	(5,629)					$	(59,112)					$	(81,653)

Six Months Ended June 30, 2023
						Interest Rate Swaps						Defined Benefit Pension Plans						Foreign Currency Translation Adjustments						Total
Balance – December 31, 2022						$	(39,248)					$	(4,247)					$	(58,115)					$	(101,610)
Other comprehensive income (loss) activity during the period:
Change in AOCL before reclassifications to income						—						—						8,764						8,764
Reclassifications from AOCL to income (2), (3)						7,652						67						—						7,719
Other comprehensive income (loss), net						7,652						67						8,764						16,483
Balance – June 30, 2023						$	(31,596)					$	(4,180)					$	(49,351)					$	(85,127)

(1)Amounts in parentheses represent debits (deferred losses).

(2)$4.9 million and $5.1 million of the reclassifications related to interest rate swaps (cash flow hedges) were recorded in Interest expense, net, for the three months ended June 30, 2024 and 2023, respectively. $9.7 million and $10.2 million of the reclassifications related to interest rate swaps (cash flow hedges) were recorded in Interest expense, net, for the six months ended June 30, 2024 and 2023, respectively. See Note 8 — Debt and Note 11 — Derivatives and Hedging for information regarding the cash flow hedges.

(3)The reclassifications related to defined benefit pension plans were recorded in Other income, net.

The provision for income taxes was $69.7 million and $66.1 million for the three months ended June 30, 2024 and 2023, respectively. The effective income tax rate was 23.3% and 25.0% for the three months ended June 30, 2024 and 2023, respectively. The effective income tax rate is lower in the current year primarily due to larger benefit of research and development tax credits.

The provision for income taxes was $118.8 million and $151.6 million for the six months ended June 30, 2024 and 2023, respectively. The effective income tax rate was 21.3% and 23.5% for the six months ended June 30, 2024 and 2023, respectively. The effective income tax rate was higher in the prior year primarily due to the impact of the sale of the TalentNeuron business.

The Company had gross unrecognized tax benefits of $157.6 million on June 30, 2024 and $148.4 million on December 31, 2023. It is reasonably possible that gross unrecognized tax benefits will decrease by approximately $9.3 million within the next twelve months due to the anticipated closure of audits and the expiration of certain statutes of limitation.

In January 2024, the Company completed an intercompany transfer of certain intellectual property (“IP”). The tax impact of the transfer did not have a significant impact on our effective tax rate. Prior to the sale, the Company had a $103.1 million deferred

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tax asset for tax basis in the related IP and a full valuation allowance due to no expected local tax benefit of the asset. As a result of the IP transfer, the deferred tax asset and related valuation allowance were written off with no impact to tax expense. The Company’s intellectual property footprint continues to evolve and may result in tax rate volatility in the future.

The Organization for Economic Co-operation and Development (“the OECD”) has issued various tax proposals including a two-pillar approach to global taxation (BEPS 2.0/ Pillar Two), focusing on global profit allocation and a 15% global corporate minimum tax rate. Several countries in which Gartner does business have proposed or enacted new laws to align with OECD Pillar Two proposals. The minimum tax is treated as a current cost beginning in 2024 and does not have a significant impact on the Company's effective tax rate for the current period. Significant details around the provisions are still uncertain as the OECD and participating countries continue to work on defining the underlying rules and administrative procedures. The Company will continue to monitor and reflect the impact of such legislative changes in future financial statements as appropriate.

The Company enters into a limited number of derivative contracts to mitigate the cash flow risk associated with changes in interest rates on variable-rate debt and changes in foreign exchange rates on forecasted foreign currency transactions. The Company accounts for its outstanding derivative contracts in accordance with FASB ASC Topic 815, which requires all derivatives, including derivatives designated as accounting hedges, to be recorded on the balance sheet at fair value. The tables below provide information regarding the Company’s outstanding derivative contracts as of the dates indicated (in thousands, except for number of contracts).

June 30, 2024
Derivative Contract Type						Number of Contracts						Notional Amounts						Fair Value Asset (Liability), Net (3)						Balance Sheet Line Item						Unrealized Loss Recorded in AOCL, net of tax
Interest rate swap (1)						1						$	350,000					$	1,108					Other assets						$	(16,912)
																		6,827						Other current assets
Foreign currency forwards (2)						31						195,193						(183)						Accrued liabilities						—
Total						32						$	545,193					$	7,752											$	(16,912)

December 31, 2023
Derivative Contract Type						Number of Contracts						Notional Amounts						Fair Value Asset (Liability), Net (3)						Balance Sheet Line Item						Unrealized Loss Recorded in AOCL, net of tax
Interest rate swap (1)						1						$	350,000					$	1,097					Other assets						$	(24,162)
																		5,962						Other current assets
Foreign currency forwards (2)						111						525,719						180						Other current assets						—
Total						112						$	875,719					$	7,239											$	(24,162)

(1)Effective June 30, 2020, the Company de-designated all of its interest rate swaps and discontinued hedge accounting. Accordingly, subsequent changes to fair value of the interest rate swap are recorded in Other income, net. The amounts previously recorded in Accumulated other comprehensive loss are amortized into Interest expense, net over the terms of the hedged forecasted interest payments. See Note 8 — Debt for additional information regarding the Company’s interest rate swap contract.

(2)The Company has foreign exchange transaction risk because it typically enters into transactions in the normal course of business that are denominated in foreign currencies that differ from the local functional currency. The Company enters into short-term foreign currency forward exchange contracts to mitigate the cash flow risk associated with changes in foreign currency rates on forecasted foreign currency transactions. These contracts are accounted for at fair value with realized and unrealized gains and losses recognized in Other income, net because the Company does not designate these contracts as hedges for accounting purposes. All of the outstanding foreign currency forward exchange contracts at June 30, 2024 matured before July 31, 2024.

(3)See Note 12 — Fair Value Disclosures for the determination of the fair values of these instruments.

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At June 30, 2024, all of the Company’s derivative counterparties were investment grade financial institutions. The Company did not have any collateral arrangements with its derivative counterparties and none of the derivative contracts contained credit-risk related contingent features. The table below provides information regarding amounts recognized in the accompanying Condensed Consolidated Statements of Operations for derivative contracts for the periods indicated (in thousands).

						Three Months Ended												Six Months Ended
						June 30,												June 30,
Amount recorded in:						2024						2023						2024						2023
Interest expense, net (1)						$	4,870					$	5,094					$	9,676					$	10,211
Other (income) expense, net (2)						(1,755)						(7,704)						(6,069)						(5,800)
Total (income) expense, net						$	3,115					$	(2,610)					$	3,607					$	4,411

(1)Consists of interest expense from interest rate swap contracts.

 

The Company’s financial instruments include cash equivalents, fees receivable from customers, accounts payable and accrued liabilities, all of which are normally short-term in nature. The Company believes that the carrying amounts of these financial instruments reasonably approximate their fair values due to their short-term nature. The Company’s financial instruments also include its outstanding variable-rate borrowings under the 2024 Credit Agreement. The Company believes that the carrying amounts of its variable-rate borrowings reasonably approximate their fair values because the rates of interest on those borrowings reflect current market rates of interest for similar instruments with comparable maturities.

The Company enters into a limited number of derivatives transactions but does not enter into repurchase agreements, securities lending transactions or master netting arrangements. Receivables or payables that result from derivatives transactions are recorded gross in the Company’s Condensed Consolidated Balance Sheets.

FASB ASC Topic 820 provides a framework for the measurement of fair value and a valuation hierarchy based on the transparency of inputs used in the valuation of assets and liabilities. Classification within the valuation hierarchy is based on the lowest level of input that is significant to the resulting fair value measurement. The valuation hierarchy contains three levels. Level 1 measurements consist of quoted prices in active markets for identical assets or liabilities. Level 2 measurements include significant other observable inputs such as quoted prices for similar assets or liabilities in active markets; identical assets or liabilities in inactive markets; observable inputs such as interest rates and yield curves; and other market-corroborated inputs. Level 3 measurements include significant unobservable inputs such as internally-created valuation models. Generally, the Company does not utilize Level 3 valuation inputs to remeasure any of its assets or liabilities. However, Level 3 inputs may be used by the Company when certain long-lived assets, including identifiable intangible assets, goodwill, and right-of-use assets are measured at fair value on a nonrecurring basis when there are indicators of impairment. Additionally, Level 3 inputs may be used by the Company in its required annual impairment review of goodwill. Information regarding the periodic assessment of the Company’s goodwill is included in Note 3 — Goodwill and Intangible Assets. The Company does not typically transfer assets or liabilities between different levels of the valuation hierarchy.

The table below presents the fair values of certain financial assets and liabilities that are measured at fair value on a recurring basis in the Company's financial statements (in thousands).

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Description						June 30, 2024						December 31, 2023
Assets:
Values based on Level 1 inputs:
Deferred compensation plan assets (1)						$	13,766					$	10,290
Total Level 1 inputs						13,766						10,290
Values based on Level 2 inputs:
Deferred compensation plan assets (1)						122,865						104,555
Foreign currency forward contracts (2)						81						1,646
Interest rate swap contract (3)						7,935						7,059
Total Level 2 inputs						130,881						113,260
Total Assets						$	144,647					$	123,550
Liabilities:
Values based on Level 2 inputs:
Deferred compensation plan liabilities (1)						$	139,856					$	121,708
Foreign currency forward contracts (2)						264						1,466
Total Level 2 inputs						140,120						123,174
Total Liabilities						$	140,120					$	123,174

(1)The Company has a deferred compensation plan for the benefit of certain highly compensated officers, managers and other key employees. The assets consist of investments in money market funds, mutual funds and company-owned life insurance contracts, which are valued based on Level 1 or Level 2 inputs. The related deferred compensation plan liabilities are recorded at fair value, or the estimated amount needed to settle the liability, which the Company considers to be a Level 2 input.

(2)The Company enters into foreign currency forward exchange contracts to hedge the effects of adverse fluctuations in foreign currency exchange rates (see Note 11 — Derivatives and Hedging). Valuation of these contracts is based on observable foreign currency exchange rates in active markets, which the Company considers to be a Level 2 input.

(3)The Company has an interest rate swap contract that hedges the risk of variability from interest payments on its borrowings (see Note 8 — Debt). The fair value of the interest rate swap is based on mark-to-market valuations prepared by a third-party broker. This valuation is based on observable interest rates from recently executed market transactions and other observable market data, which the Company considers to be Level 2 inputs. The Company independently corroborates the reasonableness of the valuations prepared by the third-party broker by using an electronic quotation service.

The table below presents the carrying amounts (net of deferred financing costs) and fair values of financial instruments that are not recorded at fair value in the Company’s Condensed Consolidated Balance Sheets (in thousands). The estimated fair value of the financial instruments was derived from quoted market prices provided by an independent dealer, which the Company considers to be a Level 2 input.

						Carrying Amount												Fair Value
						June 30,						December 31,						June 30,						December 31,
Description						2024						2023						2024						2023
2028 Notes						$	794,685					$	794,088					$	770,264					$	759,040
2029 Notes						595,227						594,794						548,016						543,408
2030 Notes						793,635						793,189						716,816						709,600
Total						$	2,183,547					$	2,182,071					$	2,035,096					$	2,012,048

Assets and liabilities measured at fair value on a non-recurring basis

The Company’s certain long-lived assets, including identifiable intangible assets, goodwill, right-of-use assets and other long-lived assets, are measured at fair value on a nonrecurring basis when there are indicators of impairment. The Company recorded

impairment losses during the three months ended June 30, 2023 of $10.0 million, and $0.5 million and $18.7 million for the six months ended June 30, 2024 and 2023, respectively, on right-of-use assets and other long-lived assets primarily related to certain office leases that the Company determined will no longer be used. The impairments were derived by comparing the fair

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value of the impacted assets to the carrying value of those assets as of the impairment measurement date, as required under ASC Topic 360 using Level 3 inputs. See Note 14 — Leases for additional discussion related to these impairment charges.

Legal Matters. The Company is involved in legal proceedings and litigation arising in the ordinary course of business. A provision is recorded for pending litigation in the Company’s consolidated financial statements when it is determined that an unfavorable outcome is probable and the amount of the loss can be reasonably estimated. The Company believes that the potential liability, if any, in excess of amounts already accrued from all proceedings, claims and litigation will not have a material effect on its financial position, cash flows or results of operations when resolved in a future period.

Indemnifications. The Company has various agreements that may obligate it to indemnify the other party with respect to certain matters. Generally, these indemnification clauses are included in contracts arising in the normal course of business under which the Company customarily agrees to hold the other party harmless against losses arising from a breach of representations related to matters such as title to assets sold and licensed or certain intellectual property rights. It is not possible to predict the maximum potential amount of future payments under these indemnification agreements due to the conditional nature of the Company’s obligations and the unique facts of each particular agreement. Historically, payments made by the Company under these agreements have not been material. As of June 30, 2024, the Company did not have any material payment obligations under any such indemnification agreements.

The Company’s leasing activities are primarily for facilities under cancelable and non-cancelable lease agreements expiring during 2024 and through 2038. These facilities support our executive and administrative activities, sales, systems support, operations, and other functions. The Company also has leases for office equipment and other assets, which are not significant. Certain of these lease agreements include (i) renewal options to extend the lease term for up to ten years and/or (ii) options to terminate the agreement within one year. Additionally, certain of the Company’s lease agreements provide standard recurring escalations of lease payments for, among other things, increases in a lessor’s maintenance costs and taxes. Under some lease agreements, the Company may be entitled to allowances, free rent, lessor-financed tenant improvements and other incentives. The Company’s lease agreements do not contain any material residual value guarantees or material restrictive covenants.

The Company subleases certain office space that it does not intend to occupy. Such sublease arrangements expire during 2024 and through 2032 and primarily relate to facilities in Arlington, Virginia. Certain of the Company’s sublease agreements: (i) include renewal and termination options; (ii) provide for customary escalations of lease payments in the normal course of business; and (iii) grant the subtenant certain allowances, free rent, Gartner-financed tenant improvements and other incentives.

All of the Company’s leasing and subleasing activity is recognized in Selling, general and administrative expense in the accompanying Condensed Consolidated Statements of Operations. The table below presents the Company’s net lease cost and certain other information related to the Company’s leasing activities as of and for the periods indicated (dollars in thousands).

						Three Months Ended												Six Months Ended
						June 30,												June 30,
Description:						2024						2023						2024						2023
Operating lease cost (1)						$	25,656					$	28,567					$	51,559					$	57,366
Lease cost (2)						5,073						5,560						10,704						10,280
Sublease income						(11,807)						(13,284)						(23,689)						(25,925)
Total lease cost, net (3) (4)						$	18,922					$	20,843					$	38,574					$	41,721
Cash paid for amounts included in the measurement of operating lease liabilities						$	38,787					$	35,194					$	72,836					$	70,142
Cash receipts from sublease arrangements						$	11,984					$	12,779					$	23,094					$	25,218
Right-of-use assets obtained in exchange for new operating lease liabilities						$	3,944					$	6,344					$	10,735					$	7,991

(1)Included in operating lease cost was $9.2 million and $10.8 million for the three months ended June 30, 2024 and 2023, respectively, and $18.4 million and $21.4 million for the six months ended June 30, 2024 and 2023, respectively, for costs related to subleasing activities.

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(2)These amounts are primarily variable lease and nonlease costs that are not fixed at the lease commencement date or are dependent on something other than an index or a rate.

(3)The Company did not capitalize any operating lease costs during any of the periods presented.

(4)Amount excludes impairment charges on lease related assets, as discussed below.

The table below indicates where the discounted operating lease payments from the above table are classified in the accompanying Condensed Consolidated Balance Sheets (in thousands).

						June 30,						December 31,
Description:						2024						2023
Accounts payable and accrued liabilities						$	92,567					$	98,493
Operating lease liabilities						471,553						513,406
Total operating lease liabilities included in the Condensed Consolidated Balance Sheets						$	564,120					$	611,899

As a result and in consideration of the changing nature of the Company’s use of office space, the Company continues to evaluate its existing real estate lease portfolio. In connection with this evaluation, the Company reviewed certain of its right-of-use assets and related other long-lived assets for impairment under ASC 360. As a result of the evaluation, the Company recognized impairment losses during the three months ended June 30, 2023 of $10.0 million, and $0.5 million and $18.7 million for the six months ended June 30, 2024 and 2023, respectively, which are included as a component of Selling, general and administrative expenses in the accompanying Condensed Consolidated Statements of Operations. The impairment losses recorded include $7.1 million related to right-of-use assets and $2.9 million related to other long-lived assets, primarily leasehold improvements, for the three months ended June 30, 2023. The impairment losses recorded include $0.4 million and $5.3 million related to right-of-use assets and $0.1 million and $13.4 million related to other long-lived assets, primarily leasehold improvements, for the six months ended June 30, 2024 and 2023, respectively.

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 values 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.

On July 25, 2024 the Company entered into a settlement agreement to resolve litigation concerning the Company's event cancellation insurance for 2020 and 2021. The settlement resolves all remaining 2020 and 2021 event cancellation insurance claims for $300.0 million. The Company expects to receive the settlement payment from the insurer during the third quarter of 2024.

On July 25, 2024, the Company’s Board of Directors authorized incremental share repurchases of up to an additional $600.0 million of Gartner’s common stock. This authorization is in addition to the previously authorized repurchases of up to $4.7 billion, which, as of the end of July 2024, had approximately $450.0 million remaining.

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v3.24.2

Cover Page - shares	6 Months Ended
	Jun. 30, 2024	Jul. 26, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	1-14443
Entity Registrant Name	Gartner, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-3099750
Entity Address, Address Line One	P.O. Box 10212
Entity Address, Address Line Two	56 Top Gallant Road
Entity Address, City or Town	Stamford,
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06902-7700
City Area Code	203
Local Phone Number	964-0096
Title of 12(b) Security	Common Stock, $.0005 par value per share
Trading Symbol	IT
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		77,059,514
Entity Central Index Key	0000749251
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Amendment Flag	false
Current Fiscal Year End Date	--12-31

v3.24.2

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 1,235,785	$ 1,318,999
Fees receivable, net of allowances of $9,000 for both periods	1,404,321	1,601,228
Deferred commissions	320,687	380,479
Prepaid expenses and other current assets	147,922	127,180
Total current assets	3,108,715	3,427,886
Property, equipment and leasehold improvements, net	258,450	262,718
Operating lease right-of-use assets	339,805	366,809
Goodwill	2,934,222	2,937,260
Intangible assets, net	455,021	501,958
Other assets	334,496	339,288
Total Assets	7,430,709	7,835,919
Current liabilities:
Accounts payable and accrued liabilities	835,287	1,127,604
Deferred revenues	2,626,511	2,640,515
Current portion of long-term debt	0	9,600
Total current liabilities	3,461,798	3,777,719
Long-term debt, net of deferred financing fees	2,457,872	2,448,696
Operating lease liabilities	471,553	513,406
Other liabilities	392,827	415,464
Total Liabilities	6,784,050	7,155,285
Stockholders’ Equity
Preferred stock, $0.01 par value, 5,000,000 shares authorized; none issued or outstanding	0	0
Common stock, $0.0005 par value, 250,000,000 shares authorized; 163,602,067 shares issued for both periods	82	82
Additional paid-in capital	2,421,835	2,320,289
Accumulated other comprehensive loss, net	(81,653)	(76,331)
Accumulated earnings	5,179,385	4,739,292
Treasury stock, at cost, 86,106,177 and 85,264,526 common shares, respectively	(6,872,990)	(6,302,698)
Total Stockholders’ Equity	646,659	680,634
Total Liabilities and Stockholders’ Equity	$ 7,430,709	$ 7,835,919

v3.24.2

Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Fees receivable, allowance	$ 9,000	$ 9,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0005	$ 0.0005
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	163,602,067	163,602,067
Treasury stock, common shares (in shares)	86,106,177	85,264,526

v3.24.2

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues:
Total revenues	$ 1,595,060	$ 1,503,185	$ 3,067,986	$ 2,912,054
Costs and expenses:
Cost of services and product development	513,314	487,418	972,755	922,557
Selling, general and administrative	712,071	680,168	1,401,904	1,337,258
Depreciation	27,594	23,712	53,911	47,608
Amortization of intangibles	22,940	22,901	45,930	45,636
Acquisition and integration charges	358	1,973	818	3,341
Gain from sale of divested operation	0	3,906	0	(135,410)
Total costs and expenses	1,276,277	1,220,078	2,475,318	2,220,990
Operating income	318,783	283,107	592,668	691,064
Interest expense, net	(19,990)	(24,558)	(39,209)	(51,949)
Gain on event cancellation insurance claims	0	0	0	3,077
Other income, net	504	5,575	5,395	3,209
Income before income taxes	299,297	264,124	558,854	645,401
Provision for income taxes	69,749	66,081	118,761	151,575
Net income	$ 229,548	$ 198,043	$ 440,093	$ 493,826
Net income per share:
Basic (in dollars per share)	$ 2.95	$ 2.50	$ 5.64	$ 6.22
Diluted (in dollars per share)	$ 2.93	$ 2.48	$ 5.60	$ 6.17
Weighted average shares outstanding:
Basic (in shares)	77,816	79,285	78,078	79,368
Diluted (in shares)	78,288	79,820	78,651	80,015
Research
Revenues:
Total revenues	$ 1,265,992	$ 1,207,885	$ 2,534,164	$ 2,425,076
Conferences
Revenues:
Total revenues	186,084	168,897	256,153	233,539
Consulting
Revenues:
Total revenues	$ 142,984	$ 126,403	$ 277,669	$ 253,439

v3.24.2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 229,548	$ 198,043	$ 440,093	$ 493,826
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(2,967)	6,932	(12,674)	8,764
Interest rate swaps – net change in deferred gain or loss	3,649	3,818	7,250	7,652
Pension plans – net change in deferred actuarial loss	51	33	102	67
Other comprehensive income (loss), net of tax	733	10,783	(5,322)	16,483
Comprehensive income	$ 230,281	$ 208,826	$ 434,771	$ 510,309

v3.24.2

Condensed Consolidated Statements of Changes in Stockholders’ Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss, Net	Accumulated Earnings	Treasury Stock
Beginning balance at Dec. 31, 2022	$ 227,798	$ 82	$ 2,179,604	$ (101,610)	$ 3,856,826	$ (5,707,104)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	295,783				295,783
Other comprehensive income (loss), net	5,700			5,700
Issuances under stock plans	7,379		(2,141)			9,520
Common share repurchases	(108,850)					(108,850)
Stock-based compensation expense	45,048		45,048
Ending balance at Mar. 31, 2023	472,858	82	2,222,511	(95,910)	4,152,609	(5,806,434)
Beginning balance at Dec. 31, 2022	227,798	82	2,179,604	(101,610)	3,856,826	(5,707,104)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	493,826
Other comprehensive income (loss), net	16,483
Ending balance at Jun. 30, 2023	586,506	82	2,259,057	(85,127)	4,350,652	(5,938,158)
Beginning balance at Mar. 31, 2023	472,858	82	2,222,511	(95,910)	4,152,609	(5,806,434)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	198,043				198,043
Other comprehensive income (loss), net	10,783			10,783
Issuances under stock plans	5,899		4,313			1,586
Common share repurchases	(133,310)					(133,310)
Stock-based compensation expense	32,233		32,233
Ending balance at Jun. 30, 2023	586,506	82	2,259,057	(85,127)	4,350,652	(5,938,158)
Beginning balance at Dec. 31, 2023	680,634	82	2,320,289	(76,331)	4,739,292	(6,302,698)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	210,545				210,545
Other comprehensive income (loss), net	(6,055)			(6,055)
Issuances under stock plans	8,072		2,712			5,360
Common share repurchases	(225,522)					(225,522)
Stock-based compensation expense	50,500		50,500
Ending balance at Mar. 31, 2024	718,174	82	2,373,501	(82,386)	4,949,837	(6,522,860)
Beginning balance at Dec. 31, 2023	680,634	82	2,320,289	(76,331)	4,739,292	(6,302,698)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	440,093
Other comprehensive income (loss), net	(5,322)
Ending balance at Jun. 30, 2024	646,659	82	2,421,835	(81,653)	5,179,385	(6,872,990)
Beginning balance at Mar. 31, 2024	718,174	82	2,373,501	(82,386)	4,949,837	(6,522,860)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	229,548				229,548
Other comprehensive income (loss), net	733			733
Issuances under stock plans	6,426		8,587			(2,161)
Common share repurchases	(347,969)					(347,969)
Stock-based compensation expense	39,747		39,747
Ending balance at Jun. 30, 2024	$ 646,659	$ 82	$ 2,421,835	$ (81,653)	$ 5,179,385	$ (6,872,990)

v3.24.2

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities:
Net income	$ 440,093	$ 493,826
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	99,841	93,244
Stock-based compensation expense	90,247	77,281
Deferred taxes	3,091	(16,153)
Gain from sale of divested operation	0	(135,410)
Loss on impairment of lease related assets	527	18,727
Reduction in the carrying amount of operating lease right-of-use assets	32,167	35,357
Amortization and write-off of deferred financing fees	2,548	2,330
Gain on de-designated swaps	(5,038)	(5,101)
Changes in assets and liabilities, net of acquisitions and divestitures:
Fees receivable, net	172,907	294,569
Deferred commissions	55,063	54,053
Prepaid expenses and other current assets	(22,525)	(18,667)
Other assets	(28,533)	(30,738)
Deferred revenues	15,935	36,704
Accounts payable and accrued and other liabilities	(297,523)	(299,561)
Cash provided by operating activities	558,800	600,461
Investing activities:
Additions to property, equipment and leasehold improvements	(52,027)	(46,694)
Acquisition of business	(2,000)	0
Proceeds from sale of divested operation	0	156,057
Cash (used in) provided by investing activities	(54,027)	109,363
Financing activities:
Proceeds from employee stock purchase plan	14,460	13,240
Payments of deferred financing fees	(2,972)	0
Proceeds from revolving credit facility	274,400	0
Payments on long-term debt	(274,400)	(3,600)
Purchases of treasury stock	(564,717)	(238,372)
Cash used in financing activities	(553,229)	(228,732)
Net (decrease) increase in cash and cash equivalents and restricted cash	(48,456)	481,092
Effects of exchange rates on cash and cash equivalents	(35,358)	(6,263)
Cash and cash equivalents and restricted cash, beginning of period	1,319,599	698,599
Cash and cash equivalents and restricted cash, end of period	$ 1,235,785	$ 1,173,428

v3.24.2

Business and Basis of Presentation	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Basis of Presentation	Business and Basis of Presentation Business. Gartner, Inc. (NYSE: IT) delivers actionable, objective insight that drives smarter decisions and stronger performance on an organization’s mission-critical priorities. Segments. Gartner delivers its products and services globally through three business segments: Research, Conferences and Consulting. Revenues and other financial information for the Company’s segments are discussed in Note 7 — Segment Information. Basis of presentation. The accompanying interim Condensed Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”), as defined in Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 270 for interim financial information and with the applicable instructions of U.S. Securities and Exchange Commission (“SEC”) Rule 10-01 of Regulation S-X on Form 10-Q, and should be read in conjunction with the consolidated financial statements and related notes of the Company in its Annual Report on Form 10-K for the year ended December 31, 2023. The fiscal year of Gartner is the twelve-month period from January 1 through December 31. In the opinion of management, all normal recurring accruals and adjustments considered necessary for a fair presentation of financial position, results of operations and cash flows at the dates and for the periods presented herein have been included. The results of operations for the three and six months ended June 30, 2024 may not be indicative of the results of operations for the remainder of 2024 or beyond. When used in these notes, the terms “Gartner,” the “Company,” “we,” “us,” or “our” refer to Gartner, Inc. and its consolidated subsidiaries. Principles of consolidation. The accompanying interim Condensed Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated. Use of estimates. The preparation of the accompanying interim Condensed Consolidated Financial Statements requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities, and reported amounts of revenues and expenses. Such estimates include the valuation of fees receivable, goodwill, intangible assets and other long-lived assets, as well as tax accruals and other liabilities. In addition, estimates are used in revenue recognition, income tax expense or benefit, performance-based compensation charges, depreciation and amortization. Management believes its use of estimates in these interim Condensed Consolidated Financial Statements to be reasonable. Management continually evaluates and revises its estimates using historical experience and other factors, including the general economic environment and actions it may take in the future. Management adjusts these estimates when facts and circumstances dictate. However, these estimates may involve significant uncertainties and judgments and cannot be determined with precision. In addition, these estimates are based on management’s best judgment at a point in time. As a result, differences between estimates and actual results could be material and would be reflected in the Company’s consolidated financial statements in future periods. Cash and cash equivalents and restricted cash. Below is a table presenting the beginning-of-period and end-of-period cash amounts from the Company’s Condensed Consolidated Balance Sheets and the total cash amounts presented in the Condensed Consolidated Statements of Cash Flows (in thousands). June 30, December 31, 2024 2023 Cash and cash equivalents $ 1,235,785  $ 1,318,999  Restricted cash classified in (1): Prepaid expenses and other current assets —  600  Cash and cash equivalents and restricted cash $ 1,235,785  $ 1,319,599  (1)Restricted cash consisted of an escrow account established in connection with one of the Company’s business acquisitions. Generally, such cash is restricted to use due to provisions contained in the underlying acquisition agreement. During the three months ended June 30, 2024,the Company paid $0.6 million of restricted cash for deferred consideration related to a 2022 acquisition. Revenue recognition. Revenue is recognized in accordance with the requirements of FASB ASC Topic 606, Revenue from Contracts with Customers (“ASC Topic 606”). Revenue is only recognized when all of the required criteria for revenue recognition have been met. The accompanying Condensed Consolidated Statements of Operations present revenue net of any sales or value-added taxes that we collect from customers and remit to government authorities. ASC Topic 270 requires certain disclosures in interim financial statements around the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Note 4 — Revenue and Related Matters provides additional information regarding the Company’s revenues. Gain on event cancellation insurance claims. In February 2023, the Company received $3.1 million of proceeds related to 2020 event cancellation insurance claims. The Company does not record any gain on insurance claims in excess of expenses incurred until the receipt of the insurance proceeds is deemed to be realizable. Accounting standards issued but not yet adopted. The FASB has issued accounting standards that have not yet become effective as of June 30, 2024 and may impact the Company’s Consolidated Financial Statements or related disclosures in future periods. The standards and their potential impacts are discussed below. Income Taxes— In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures (“ASU No. 2023-09”). The amendments in this ASU are expected to enhance the transparency and decision usefulness of income tax disclosures. ASU 2023-09 requires entities to enhance income tax disclosures primarily related to the rate reconciliation and income taxes paid information. Companies will need to disaggregate the disclosure of income taxes paid (net of refunds received) by federal, state, and foreign taxes on an annual basis. Additionally, on an annual basis, companies would disclose income taxes paid disaggregated by individual jurisdiction using a quantitative threshold of 5% of total income taxes paid. Public business entities would also be required to provide, on an annual basis, rate reconciliation information by specific categories, including state and local income tax, the effect of cross-border tax laws, foreign tax effects, changes in prior year unrecognized tax benefits, and tax credits, among others. Additionally, some categories would then require disaggregation based on a quantitative threshold of 5%. The foreign tax effect category requires disaggregation by both jurisdiction and nature. The ASU also requires additional qualitative disclosures. All public entities will be required to report income tax information in accordance with the new guidance starting in annual periods beginning after December 15, 2024. The Company expects this ASU to only impact its disclosures with no impacts to the Company’s results of operations, cash flows, and financial condition. Segment Reporting— In November 2023, the FASB issued ASU 2023-07, Segment Reporting: Improvements in Reportable Segment Disclosures (“ASU No. 2023-07”). The amendments in the ASU are expected to improve disclosures about a public entity’s reportable segments and addresses requests from investors and other allocators of capital for additional, more detailed information about a reportable segment’s expenses. ASU 2023-07 requires public companies to disclose, on an annual and interim basis, significant expenses that are regularly provided to the chief operating decision maker (CODM) and included within each reported measure of segment profit and loss. The amendments in the ASU require that a public company provide all annual disclosures about a reportable segment’s profit or loss and assets currently required under ASC 280 in interim periods. The amendments in the ASU also require that a public entity disclose, on an annual and interim basis, an amount for other segment items by reportable segment and a description of its composition. The other segment items category is the difference between segment revenue less the significant expenses disclosed and each reported measure of segment profit or loss. The amendments in the ASU, among other items, also requires that a public company disclose the title and position of the CODM and an explanation of how the CODM uses the reported measure(s) of segment profit or loss in assessing segment performance and deciding how to allocate resources. The ASU applies to all public entities that are required to report segment information in accordance with Topic 280. All public entities will be required to report segment information in accordance with the new guidance starting in annual periods beginning after December 15, 2023 and for interim periods within annual periods beginning after December 15, 2024. The Company expects this ASU to only impact its disclosures with no impacts to the Company’s results of operations, cash flows, and financial condition.

v3.24.2

Acquisitions and Divestiture	6 Months Ended
	Jun. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Acquisition and Divestiture	Acquisition and Divestiture Acquisition In September 2023, the Company acquired 100% of a formerly independent sales agent of Gartner research products in the Czech Republic for an aggregate purchase price of $7.9 million, including cash acquired and deferred consideration. During the six months ended June 30, 2024, the Company paid $2.0 million of deferred consideration. The allocation of the purchase price is preliminary with respect to certain tax matters. Divestiture In February 2023, the Company completed the sale of a non-core business, TalentNeuron, for approximately $161.1 million net of post-close adjustments. The Company recorded pre-tax gains of $135.4 million on the sale of TalentNeuron, which is included in Gain from sale of divested operation in the Consolidated Statement of Operations during the six months ended June 30, 2023. TalentNeuron was included in the Company’s Research segment.

v3.24.2

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill Goodwill represents the excess of the purchase price of acquired businesses over the estimated fair values of the tangible and identifiable intangible net assets acquired. Evaluations of the recoverability of goodwill are performed in accordance with FASB ASC Topic 350, which requires an annual assessment of potential goodwill impairment at the reporting unit level and whenever events or changes in circumstances indicate that the carrying value of goodwill may not be recoverable. When performing the annual assessment of the recoverability of goodwill, the Company initially performs a qualitative analysis evaluating whether any events or circumstances occurred or exist that provide evidence that it is more likely than not that the fair value of any of the Company’s reporting units is less than the related carrying amount. If the Company does not believe that it is more likely than not that the fair value of any of the Company’s reporting units is less than the related carrying amount, then no quantitative impairment test is performed. However, if the results of the qualitative assessment indicate that it is more likely than not that the fair value of a reporting unit is less than its respective carrying amount, then a quantitative impairment test is performed. Evaluating the recoverability of goodwill requires judgments and assumptions regarding future trends and events. As a result, both the precision and reliability of the estimates are subject to uncertainty. The Company’s most recent annual impairment test of goodwill was a qualitative analysis conducted during the quarter ended September 30, 2023 that indicated no impairment. Subsequent to completing the 2023 annual impairment test, there were no events or changes in circumstances noted that required an interim impairment test. The table below presents changes to the carrying amount of goodwill by segment during the six months ended June 30, 2024 (in thousands).   Research Conferences Consulting Total Balance at December 31, 2023 (1) $ 2,657,549  $ 183,997  $ 95,714  $ 2,937,260  Foreign currency translation impact (2,789) (43) (206) (3,038) Balance at June 30, 2024 (1) $ 2,654,760  $ 183,954  $ 95,508  $ 2,934,222  (1)The Company does not have any accumulated goodwill impairment losses. Finite-Lived Intangible Assets The tables below present reconciliations of the carrying amounts of the Company’s finite-lived intangible assets as of the dates indicated (in thousands). June 30, 2024 Customer Relationships Technology-related Other Total Gross cost at December 31, 2023 $ 1,077,183  $ 11,200  $ 10,200  $ 1,098,583  Foreign currency translation impact (2,110) —  —  (2,110) Gross cost 1,075,073  11,200  10,200  1,096,473  Accumulated amortization (1) (623,426) (11,200) (6,826) (641,452) Balance at June 30, 2024 $ 451,647  $ —  $ 3,374  $ 455,021  December 31, 2023 Customer Relationships Technology-related Other Total Gross cost $ 1,077,183  11,200  $ 10,200  $ 1,098,583  Accumulated amortization (1) (580,937) (9,333) (6,355) (596,625) Balance at December 31, 2023 $ 496,246  $ 1,867  $ 3,845  $ 501,958  (1) Finite-lived intangible assets are amortized using the straight-line method over the following periods: Customer relationships—6 to 13 years; Technology-related—3 years; and Other—11 years. Amortization expense related to finite-lived intangible assets was $22.9 million during both the three months ended June 30, 2024 and 2023, and $45.9 million and $45.6 million during the six months ended June 30, 2024 and 2023, respectively. The estimated future amortization expense by year for finite-lived intangible assets is presented in the table below (in thousands). 2024 (remaining six months) $ 44,054  2025 81,308  2026 78,634  2027 78,026  2028 76,554  Thereafter 96,445  $ 455,021

v3.24.2

Revenue and Related Matters	6 Months Ended
	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Revenue and Related Matters	Revenue and Related Matters Disaggregated Revenue — The Company’s disaggregated revenue by reportable segment is presented in the tables below for the periods indicated (in thousands). By Primary Geographic Market (1) Three Months Ended June 30, 2024 Primary Geographic Market Research Conferences Consulting Total United States and Canada $ 832,719  $ 131,119  $ 90,943  $ 1,054,781  Europe, Middle East and Africa 287,650  46,629  34,681  368,960  Other International 145,623  8,336  17,360  171,319  Total revenues $ 1,265,992  $ 186,084  $ 142,984  $ 1,595,060  Three Months Ended June 30, 2023 Primary Geographic Market Research Conferences Consulting Total United States and Canada $ 812,724  $ 123,243  $ 76,413  $ 1,012,380  Europe, Middle East and Africa 258,255  38,803  33,865  330,923  Other International 136,906  6,851  16,125  159,882  Total revenues $ 1,207,885  $ 168,897  $ 126,403  $ 1,503,185  Six Months Ended June 30, 2024 Primary Geographic Market Research Conferences Consulting Total United States and Canada $ 1,667,940  $ 179,209  $ 169,482  $ 2,016,631  Europe, Middle East and Africa 575,193  56,957  71,283  703,433  Other International 291,031  19,987  36,904  347,922  Total revenues $ 2,534,164  $ 256,153  $ 277,669  $ 3,067,986  Six Months Ended June 30, 2023 Primary Geographic Market Research Conferences Consulting Total United States and Canada $ 1,622,123  $ 172,018  $ 153,388  $ 1,947,529  Europe, Middle East and Africa 526,912  48,010  66,803  641,725  Other International 276,041  13,511  33,248  322,800  Total revenues $ 2,425,076  $ 233,539  $ 253,439  $ 2,912,054  (1)Revenue is reported based on where the sale is fulfilled. The Company’s revenue is generated primarily through direct sales to clients by domestic and international sales forces and a network of independent international sales agents. By Timing of Revenue Recognition Three Months Ended June 30, 2024 Timing of Revenue Recognition Research Conferences Consulting Total Transferred over time (1) $ 1,187,626  $ —  $ 106,584  $ 1,294,210  Transferred at a point in time (2) 78,366  186,084  36,400  300,850  Total revenues $ 1,265,992  $ 186,084  $ 142,984  $ 1,595,060  Three Months Ended June 30, 2023 Timing of Revenue Recognition Research Conferences Consulting Total Transferred over time (1) $ 1,113,328  $ —  $ 103,921  $ 1,217,249  Transferred at a point in time (2) 94,557  168,897  22,482  285,936  Total revenues $ 1,207,885  $ 168,897  $ 126,403  $ 1,503,185  Six Months Ended June 30, 2024 Timing of Revenue Recognition Research Conferences Consulting Total Transferred over time (1) $ 2,369,894  $ —  $ 215,171  $ 2,585,065  Transferred at a point in time (2) 164,270  256,153  62,498  482,921  Total revenues $ 2,534,164  $ 256,153  $ 277,669  $ 3,067,986  Six Months Ended June 30, 2023 Timing of Revenue Recognition Research Conferences Consulting Total Transferred over time (1) $ 2,223,124  $ —  $ 200,928  $ 2,424,052  Transferred at a point in time (2) 201,952  233,539  52,511  488,002  Total revenues $ 2,425,076  $ 233,539  $ 253,439  $ 2,912,054  (1)Research revenues in this category are recognized in connection with performance obligations that are satisfied over time using a time-elapsed output method to measure progress. Consulting revenues in this category are recognized over time using costs incurred to date relative to total estimated costs at completion. (2)The revenues in this category are recognized in connection with performance obligations that are satisfied at the point in time that the contractual deliverables are provided to the customer. Performance Obligations — For customer contracts that are greater than one year in duration, the aggregate amount of the transaction price allocated to performance obligations that were unsatisfied (or partially unsatisfied) as of June 30, 2024 was approximately $5.6 billion. The Company expects to recognize $1.8 billion, $2.7 billion and $1.1 billion of this revenue (most of which pertains to Research) during the remainder of 2024, the year ending December 31, 2025 and thereafter, respectively. The Company applies a practical expedient that is permitted under ASC Topic 606 and, accordingly, it does not disclose such performance obligation information for customer contracts that have original durations of one year or less. The Company’s performance obligations for contracts meeting this ASC Topic 606 disclosure exclusion primarily include: (i) stand-ready services under Research subscription contracts; (ii) holding conferences and meetings where attendees and exhibitors can participate; and (iii) providing customized Consulting solutions for clients under fixed fee and time and materials engagements. The remaining duration of these performance obligations is generally less than one year, which aligns with the period that the parties have enforceable rights and obligations under the affected contracts. Customer Contract Assets and Liabilities — The timing of the recognition of revenue and the amount and timing of the Company’s billings and cash collections, including upfront customer payments, result in the recognition of both assets and liabilities on the Company’s Condensed Consolidated Balance Sheets. The table below provides information regarding certain of the Company’s balance sheet accounts that pertain to its contracts with customers (in thousands). June 30, December 31, 2024 2023 Assets: Fees receivable, gross (1) $ 1,413,321  $ 1,610,228  Contract assets recorded in Prepaid expenses and other current assets (2) $ 29,773  $ 28,791  Contract liabilities: Deferred revenues (current liability) (3) $ 2,626,511  $ 2,640,515  Non-current deferred revenues recorded in Other liabilities (3) 25,082  33,490  Total contract liabilities $ 2,651,593  $ 2,674,005  (1)Fees receivable represent an unconditional right to payment from the Company’s customers and include both billed and unbilled amounts. (2)Contract assets represent recognized revenue for which the Company does not have an unconditional right to payment as of the balance sheet date because the project may be subject to a progress billing milestone or some other billing restrictions. (3)Deferred revenues represent amounts (i) for which the Company has received an upfront customer payment or (ii) that pertain to recognized fees receivable. Both situations occur before the completion of the Company’s performance obligation(s). The Company recognized revenue of $1.2 billion during both the three months ended June 30, 2024 and 2023, and $1.7 billion and $1.6 billion during the six months ended June 30, 2024 and 2023, respectively, that was attributable to deferred revenues that were recorded at the beginning of each such period. Those amounts primarily consisted of Research revenues that were recognized ratably as control of the goods or services passed to the customer during the reporting periods. During each of the three and six months ended June 30, 2024 and 2023, the Company did not record any material impairments related to its contract assets.

v3.24.2

Computation of Earnings Per Share	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Computation of Earnings Per Share	Computation of Earnings Per Share Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of shares of Common Stock outstanding during the period. Diluted EPS reflects the potential dilution of securities that could share in earnings. Potential shares of common stock are excluded from the computation of diluted earnings per share when their effect would be anti-dilutive. The table below sets forth the calculation of basic and diluted income per share for the periods indicated (in thousands, except per share data). Three Months Ended Six Months Ended   June 30, June 30,   2024 2023 2024 2023 Numerator:         Net income used for calculating basic and diluted income per share $ 229,548  $ 198,043  $ 440,093  $ 493,826  Denominator:         Weighted average common shares used in the calculation of basic income per share 77,816  79,285  78,078 79,368 Dilutive effect of outstanding awards associated with stock-based compensation plans (1) 472  535  573 647 Shares used in the calculation of diluted income per share 78,288  79,820  78,651 80,015 Basic income per share $ 2.95  $ 2.50  $ 5.64  $ 6.22  Diluted income per share $ 2.93  $ 2.48  $ 5.60  $ 6.17  (1)Certain outstanding awards associated with stock-based compensation plans were not included in the computation of diluted income per share because the effect would have been anti-dilutive. These anti-dilutive outstanding awards associated with stock-based compensation plans was approximately 0.1 million for both the three and six months ended June 30, 2024 and approximately 0.2 million for both the three and six months ended June 30, 2023.

v3.24.2

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Company grants stock-based compensation awards as an incentive for employees and directors to contribute to the Company’s long-term success. The Company currently awards stock-settled stock appreciation rights, service-based and performance-based restricted stock units, and common stock equivalents. As of June 30, 2024, the Company had 5.6 million shares of its common stock, par value $0.0005 per share, (the “Common Stock”) available for stock-based compensation awards under the Gartner, Inc. Long-Term Incentive Plan as amended and restated in June 2023 (the “Plan”). The tables below summarize the Company’s stock-based compensation expense by award type and expense category line item during the periods indicated (in millions). Three Months Ended Six Months Ended   June 30, June 30, Award type 2024 2023 2024 2023 Stock appreciation rights $ 3.0  $ 3.1  $ 7.6  $ 5.6  Restricted stock units 36.4  28.9  82.0  71.1  Common stock equivalents 0.3  0.3  0.6  0.6  Total (1) $ 39.7  $ 32.3  $ 90.2  $ 77.3  Three Months Ended Six Months Ended   June 30, June 30, Expense category line item 2024 2023 2024 2023 Cost of services and product development $ 15.3  $ 12.7  $ 34.8  $ 31.0  Selling, general and administrative 24.4  19.6  55.4  46.3  Total (1) $ 39.7  $ 32.3  $ 90.2  $ 77.3  (1)Includes costs of $18.4 million and $13.1 million during the three months ended June 30, 2024 and 2023, respectively, and $49.0 million and $39.9 million during the six months ended June 30, 2024 and 2023, respectively, for awards to retirement-eligible employees. Those awards vest on an accelerated basis.

v3.24.2

Segment Information	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Segment Information	Segment Information The Company’s products and services are delivered through three segments – Research, Conferences and Consulting, as described below. •Research equips executives and their teams from every function and across all industries with actionable, objective insight, guidance and tools. Our experienced experts deliver all this value informed by an unmatched combination of practitioner-sourced and data-driven research to help our clients address their mission critical priorities. •Conferences provides executives and teams across an organization the opportunity to learn, share and network. From our Gartner Symposium/Xpo series, to industry-leading conferences focused on specific business roles and topics, to peer-driven sessions, our offerings enable attendees to experience the best of Gartner insight and guidance. •Consulting serves senior executives leading technology-driven strategic initiatives leveraging the power of Gartner’s actionable, objective insight. Through custom analysis and on-the-ground support we enable optimized technology investments and stronger performance on our clients’ mission critical priorities. The Company evaluates segment performance and allocates resources based on gross contribution margin. Gross contribution, as presented in the tables below, is defined as operating income or loss excluding certain Cost of services and product development expenses, Selling, general and administrative expenses, Depreciation, Amortization of intangibles, Acquisition and integration charges and Gain from sale of divested operation. Certain bonus and fringe benefit costs included in consolidated Cost of services and product development are not allocated to segment expense. The accounting policies used by the reportable segments are the same as those used by the Company. There are no intersegment revenues. The Company does not identify or allocate assets, including capital expenditures, by reportable segment. Accordingly, assets are not reported by segment because the information is not available by segment and is not reviewed in the evaluation of segment performance or in making decisions regarding the allocation of resources. The tables below present information about the Company’s reportable segments for the periods indicated (in thousands). Three Months Ended June 30, 2024 Research Conferences Consulting Consolidated Revenues $ 1,265,992  $ 186,084  $ 142,984  $ 1,595,060  Gross contribution 933,121  108,112  53,719  1,094,952  Corporate and other expenses       (776,169) Operating income       $ 318,783  Three Months Ended June 30, 2023 Research Conferences Consulting Consolidated Revenues $ 1,207,885  $ 168,897  $ 126,403  $ 1,503,185  Gross contribution 885,282  98,450  47,321  1,031,053  Corporate and other expenses (747,946) Operating income $ 283,107  Six Months Ended June 30, 2024 Research Conferences Consulting Consolidated Revenues $ 2,534,164  $ 256,153  $ 277,669  $ 3,067,986  Gross contribution 1,877,690  131,367  108,006  2,117,063  Corporate and other expenses (1,524,395) Operating income $ 592,668  Six Months Ended June 30, 2023 Research Conferences Consulting Consolidated Revenues $ 2,425,076  $ 233,539  $ 253,439  $ 2,912,054  Gross contribution 1,784,796  125,238  98,129  2,008,163  Corporate and other expenses (1,317,099) Operating income $ 691,064  The table below provides a reconciliation of total segment gross contribution to net income for the periods indicated (in thousands). Three Months Ended Six Months Ended June 30, June 30, 2024 2023 2024 2023 Total segment gross contribution $ 1,094,952  $ 1,031,053  $ 2,117,063  $ 2,008,163  Costs and expenses: Cost of services and product development - unallocated (1) 13,206  15,286  21,832  18,666  Selling, general and administrative 712,071  680,168  1,401,904  1,337,258  Depreciation and amortization 50,534  46,613  99,841  93,244  Acquisition and integration charges 358  1,973  818  3,341    Gain from sale of divested operation —  3,906  —  (135,410) Operating income 318,783  283,107  592,668  691,064  Interest expense and other, net (19,486) (18,983) (33,814) (48,740) Gain on event cancellation insurance claims —  —  —  3,077  Less: Provision for income taxes 69,749  66,081  118,761  151,575  Net income $ 229,548  $ 198,043  $ 440,093  $ 493,826  (1)The unallocated amounts consist of certain bonus and fringe costs recorded in consolidated Cost of services and product development that are not allocated to segment expense. The Company’s policy is to allocate bonuses to segments at 100% of a segment employee’s target bonus. Amounts above or below 100% are absorbed by corporate.

v3.24.2

Debt	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Debt	Debt The Company’s total outstanding borrowings are summarized in the table below (in thousands). June 30, December 31, Description 2024 2023 2024 Credit Agreement - Revolving facility (1), (2) $ 274,400  $ —  2020 Credit Agreement - Term loan facility —  274,400  2020 Credit Agreement - Revolving credit facility —  —  4.50% Senior Notes due 2028 (“2028 Notes”) 800,000  800,000  3.625% Senior Notes due 2029 (“2029 Notes”) 600,000  600,000  3.75% Senior Notes due 2030 (“2030 Notes”) 800,000  800,000  Other (3) 5,000  5,000  Principal amount outstanding (4) 2,479,400  2,479,400  Less: deferred financing fees (5) (21,528) (21,104) Net balance sheet carrying amount $ 2,457,872  $ 2,458,296  (1)The contractual annualized interest rate as of June 30, 2024 on the 2024 Credit Agreement was 6.725%, which consisted of Term Secured Overnight Financing Rate (“SOFR”) of 5.375% plus a margin of 1.350%. However, the Company has an interest rate swap contract that effectively converts the floating SOFR on outstanding amounts to a fixed base rate. (2)The Company had approximately $0.7 billion of available borrowing capacity on the 2024 Credit Agreement revolver (not including the expansion feature) as of June 30, 2024. (3)Consists of a State of Connecticut economic development loan originated in 2019 with a 10-year maturity and bears interest at a fixed rate of 1.75%. This loan may be repaid at any time by the Company without penalty. (4)The weighted average annual effective rate on the Company’s outstanding debt for the three and six months ended June 30, 2024, including the effects of its interest rate swaps discussed below, was 5.03% and 5.02%, respectively. (5)Deferred financing fees are being amortized to Interest expense, net over the term of the related debt obligation. 2024 Credit Agreement On March 26, 2024, the Company entered into a Credit Agreement (the “2024 Credit Agreement”) among the Company, as borrower, the lenders party thereto and JPMorgan Chase Bank, N.A., as administrative agent (the “Administrative Agent”). The 2024 Credit Agreement provides for a $1.0 billion senior unsecured five-year revolving facility. The facility may be increased, at the Company’s option and under certain conditions, by up to an additional $750 million in the aggregate. The facility may be used for revolving loans, and up to $75.0 million may be used for letters of credit. The revolving loans may be borrowed, repaid and re-borrowed until March 26, 2029, at which time all amounts borrowed must be repaid, subject to customary extension mechanics. On March 26, 2024, the Company borrowed $274.4 million under the 2024 Credit Agreement. The initial borrowing was used to repay the outstanding amounts under the 2020 Credit Agreement. Additional amounts borrowed under the 2024 Credit Agreement will be used for working capital needs and general corporate purposes of the Company and its subsidiaries, including the funding of acquisitions and investments, payment of capital expenditures and the repurchase of shares. Interest under the revolving facility accrues, at a variable rate, based on, at our option, (i) the Secured Overnight Funding Rate (“SOFR”) plus a credit spread adjustment of 0.10% or (ii) an alternate base rate (“Base Rate”) plus, in each case, an applicable margin, and is payable monthly. The applicable margin ranges between 1.125% and 1.75%, depending on the lower rate determined by either the Company’s leverage ratio or the credit rating of the Company’s senior unsecured debt. At June 30, 2024, the applicable all-in margin on the revolving facility was 1.35% (including the credit spread adjustment). The commitment fee payable on the unused portion of the facility is equal to between 0.125% and 0.25% based on utilization of the facility. The Company has also agreed to pay customary letter of credit fees. The 2024 Credit Agreement contains certain customary restrictive loan covenants, including, among others, a financial covenant requiring a maximum leverage ratio and covenants limiting the Company’s ability to grant liens, make acquisitions, be acquired and the ability of the Company’s subsidiaries to incur indebtedness. Subsidiaries of the Company are not required to guarantee obligations under the facility, unless such subsidiaries guarantee indebtedness in excess of a threshold set out in the 2024 Credit Agreement, subject to certain limitations and exceptions. The 2024 Credit Agreement contains customary events of default that include, among others, non-payment of principal, interest or fees, material inaccuracy of representations and warranties, violation of covenants, cross defaults to certain other indebtedness, bankruptcy and insolvency events, ERISA defaults, material judgments, and events constituting a change of control. The occurrence of an event of default allows the lenders to terminate their obligations to lend under the 2024 Credit Agreement and could result in the acceleration of the Company’s obligations under the facility. 2029 Notes On June 18, 2021, the Company issued $600.0 million aggregate principal amount of 3.625% Senior Notes due 2029. The 2029 Notes were issued pursuant to an indenture, dated as of June 18, 2021 (the “2029 Note Indenture”), among the Company, the guarantors party thereto and U.S. Bank National Association, as trustee. The 2029 Notes were issued at an issue price of 100.0% and bear interest at a rate of 3.625% per annum. Interest on the 2029 Notes is payable on June 15 and December 15 of each year, beginning on December 15, 2021. The 2029 Notes will mature on June 15, 2029. The Company may redeem some or all of the 2029 Notes at any time on or after June 15, 2024 for cash at the redemption prices set forth in the 2029 Notes Indenture, plus accrued and unpaid interest to, but excluding, the redemption date. Prior to June 15, 2024, the Company may redeem up to 40% of the aggregate principal amount of the 2029 Notes in connection with certain equity offerings, or some or all of the 2029 Notes with a “make-whole” premium, in each case subject to the terms set forth in the 2029 Note Indenture. On March 26, 2024, in connection with the closing of the 2024 Credit Agreement and as a result of the termination of the 2020 Credit Agreement, the Company’s subsidiaries that guaranteed the Company’s 2029 Notes were released from their guarantee obligations with respect to the Notes, in accordance with the terms of the indenture pursuant to which the 2029 Notes was issued. 2030 Notes On September 28, 2020, the Company issued $800.0 million aggregate principal amount of 3.75% Senior Notes due 2030. The 2030 Notes were issued pursuant to an indenture, dated as of September 28, 2020 (the “2030 Note Indenture”), among the Company, the guarantors party thereto and U.S. Bank National Association, as trustee. The 2030 Notes were issued at an issue price of 100.0% and bear interest at a rate of 3.75% per annum. Interest on the 2030 Notes is payable on April 1 and October 1 of each year, beginning on April 1, 2021. The 2030 Notes will mature on October 1, 2030. The Company may redeem some or all of the 2030 Notes at any time on or after October 1, 2025 for cash at the redemption prices set forth in the 2030 Note Indenture, plus accrued and unpaid interest to, but excluding, the redemption date. Prior to October 1, 2025, the Company may redeem up to 40% of the aggregate principal amount of the 2030 Notes in connection with certain equity offerings, or some or all of the 2030 Notes with a “make-whole” premium, in each case subject to the terms set forth in the 2030 Note Indenture. On March 26, 2024, in connection with the closing of the 2024 Credit Agreement and as a result of the termination of the 2020 Credit Agreement, the Company’s subsidiaries that guaranteed the Company’s 2030 Notes were released from their guarantee obligations with respect to the Notes, in accordance with the terms of the indenture pursuant to which the 2030 Notes was issued. 2028 Notes On June 22, 2020, the Company issued $800.0 million aggregate principal amount of 4.50% Senior Notes due 2028. The 2028 Notes were issued pursuant to an indenture, dated as of June 22, 2020 (the “2028 Note Indenture”), among the Company, the guarantors party thereto and U.S. Bank National Association, as trustee. The 2028 Notes were issued at an issue price of 100.0% and bear interest at a rate of 4.50% per annum. Interest on the 2028 Notes is payable on January 1 and July 1 of each year, beginning on January 1, 2021. The 2028 Notes will mature on July 1, 2028. The Company may redeem some or all of the 2028 Notes at any time on or after July 1, 2023 for cash at the redemption prices set forth in the 2028 Note Indenture, plus accrued and unpaid interest to, but excluding, the redemption date. Prior to July 1, 2023, the Company may redeem up to 40% of the aggregate principal amount of the 2028 Notes in connection with certain equity offerings, or some or all of the 2028 Notes with a “make-whole” premium, in each case subject to the terms set forth in the 2028 Note Indenture. On March 26, 2024, in connection with the closing of the 2024 Credit Agreement and as a result of the termination of the 2020 Credit Agreement, the Company’s subsidiaries that guaranteed the Company’s 2028 Notes were released from their guarantee obligations with respect to the Notes, in accordance with the terms of the indenture pursuant to which the 2028 Notes was issued. 2020 Credit Agreement Prior to entering into the 2024 Credit Agreement, the Company had a credit facility that provided for a $400.0 million Term loan facility and a $1.0 billion Revolving credit facility (the “2020 Credit Agreement”). The 2020 Credit Agreement contained certain customary restrictive loan covenants, including, among others, financial covenants that applied a maximum consolidated leverage ratio and a minimum consolidated interest expense coverage ratio. On March 26, 2024, concurrently with the Company’s entry into the 2024 Credit Agreement, the Company terminated the 2020 Credit Agreement and repaid all amounts outstanding. Interest Rate Swap As of June 30, 2024, the Company had one fixed-for-floating interest rate swap contract with a notional value of $350.0 million that matures in September 2025. Under the contract, the Company pays a base fixed rate of 2.98% and in return receives a floating Term SOFR base rate on 30-day notional borrowings. Effective June 30, 2020, the Company de-designated all of its interest rate swaps and discontinued hedge accounting. Accordingly, subsequent changes to the fair value of the interest rate swap are recorded in Other income, net. The amounts previously recorded in Accumulated other comprehensive loss are amortized into Interest expense, net over the terms of the hedged forecasted interest payments. As of June 30, 2024, $22.6 million is remaining in Accumulated other comprehensive loss, net. See Note 11 — Derivatives and Hedging for the amounts remaining in Accumulated other comprehensive loss, net of tax effect, at June 30, 2024 and December 31, 2023. See Note 12 — Fair Value Disclosures for a discussion of the fair values of Company’s interest rate swaps.

v3.24.2

Equity	6 Months Ended
	Jun. 30, 2024
Stockholders' Equity Note [Abstract]
Equity	Equity Share Repurchase Authorization In 2015, the Company’s Board of Directors (the “Board”) authorized a share repurchase program to repurchase up to $1.2 billion of the Company’s common stock. The Board authorized incremental share repurchases of up to an aggregate additional $3.5 billion of the Company’s common stock during 2021, 2022, and 2023. As of June 30, 2024, $487.8 million remained available under the share repurchase program. The Company may repurchase its common stock from time-to-time in amounts, at prices and in the manner that the Company deems appropriate, subject to the availability of stock, prevailing market conditions, the trading price of the stock, the Company’s financial performance and other conditions. Repurchases may be made through open market purchases (which may include repurchase plans designed to comply with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended), accelerated share repurchases, private transactions or other transactions and will be funded by cash on hand and borrowings. Repurchases may also be made from time-to-time in connection with the settlement of the Company’s stock-based compensation awards. The Company’s share repurchase activity is presented in the table below for the periods indicated. Three Months Ended Six Months Ended   June 30, June 30,   2024 2023 2024 2023 Number of shares repurchased (1) 778,575  423,833  1,268,309  751,513  Cash paid for repurchased shares (in thousands) (2) $ 339,593  $ 131,522  $ 564,717  $ 238,372  (1)The average purchase price for repurchased shares was $442.60 and $312.95 for the three months ended June 30, 2024 and 2023, respectively, and $449.19 and $321.34 for the six months ended June 30, 2024 and 2023, respectively. The repurchased shares during the three and six months ended June 30, 2024 and 2023 included purchases for both open market purchases and stock-based compensation award settlements. (2)The cash paid for repurchased shares during the six months ended June 30, 2024 excluded $5.0 million of open market purchases with trade dates in June 2024 that settled in July 2024 and excise tax accrued. The cash paid for repurchased shares during the six months ended June 30, 2023 excluded $3.1 million of open market purchases with trade dates in June 2023 that settled in July 2023 and excise tax accrued. The cash paid for repurchased shares during the three months ended June 30, 2024 excluded $5.0 million of open market purchases with trade dates in June 2024 that settled in July 2024 and excise tax accrued. The cash paid for repurchased shares during the three months ended June 30, 2023 included $2.0 million of open market purchases with trade dates in March 2023 that settled in April 2023, and excluded $3.1 million of open market purchases with trade dates in June 2023 that settled in July 2023 and excise tax accrued. Accumulated Other Comprehensive Loss, net (“AOCL”) The tables below provide information about the changes in AOCL by component and the related amounts reclassified out of AOCL to income during the periods indicated (net of tax, in thousands) (1). Three Months Ended June 30, 2024   Interest Rate Swaps Defined Benefit Pension Plans Foreign Currency Translation Adjustments Total Balance – March 31, 2024 $ (20,561) $ (5,680) $ (56,145) $ (82,386) Other comprehensive income (loss) activity during the period:       Change in AOCL before reclassifications to income —  —  (2,967) (2,967)   Reclassifications from AOCL to income (2), (3) 3,649  51  —  3,700  Other comprehensive income (loss), net 3,649  51  (2,967) 733  Balance – June 30, 2024 $ (16,912) $ (5,629) $ (59,112) $ (81,653) Three Months Ended June 30, 2023   Interest Rate Swaps Defined Benefit Pension Plans Foreign Currency Translation Adjustments Total Balance – March 31, 2023 $ (35,414) $ (4,213) $ (56,283) $ (95,910) Other comprehensive income (loss) activity during the period:   Change in AOCL before reclassifications to income —  —  6,932  6,932    Reclassifications from AOCL to income (2), (3) 3,818  33  —  3,851  Other comprehensive income (loss), net 3,818  33  6,932  10,783  Balance – June 30, 2023 $ (31,596) $ (4,180) $ (49,351) $ (85,127) Six Months Ended June 30, 2024 Interest Rate Swaps Defined Benefit Pension Plans Foreign Currency Translation Adjustments Total Balance – December 31, 2023 $ (24,162) $ (5,731) $ (46,438) $ (76,331) Other comprehensive income (loss) activity during the period:   Change in AOCL before reclassifications to income —  —  (12,674) (12,674)   Reclassifications from AOCL to income (2), (3) 7,250  102  —  7,352  Other comprehensive income (loss), net 7,250  102  (12,674) (5,322) Balance – June 30, 2024 $ (16,912) $ (5,629) $ (59,112) $ (81,653) Six Months Ended June 30, 2023 Interest Rate Swaps Defined Benefit Pension Plans Foreign Currency Translation Adjustments Total Balance – December 31, 2022 $ (39,248) $ (4,247) $ (58,115) $ (101,610) Other comprehensive income (loss) activity during the period:   Change in AOCL before reclassifications to income —  —  8,764  8,764    Reclassifications from AOCL to income (2), (3) 7,652  67  —  7,719  Other comprehensive income (loss), net 7,652  67  8,764  16,483  Balance – June 30, 2023 $ (31,596) $ (4,180) $ (49,351) $ (85,127) (1)Amounts in parentheses represent debits (deferred losses). (2)$4.9 million and $5.1 million of the reclassifications related to interest rate swaps (cash flow hedges) were recorded in Interest expense, net, for the three months ended June 30, 2024 and 2023, respectively. $9.7 million and $10.2 million of the reclassifications related to interest rate swaps (cash flow hedges) were recorded in Interest expense, net, for the six months ended June 30, 2024 and 2023, respectively. See Note 8 — Debt and Note 11 — Derivatives and Hedging for information regarding the cash flow hedges. (3)The reclassifications related to defined benefit pension plans were recorded in Other income, net. The estimated net amount of the existing losses on the Company’s interest rate swaps that are reported in Accumulated other comprehensive loss, net at June 30, 2024 that is expected to be reclassified into earnings within the next 12 months is $18.3 million.

v3.24.2

Income Taxes	6 Months Ended
	Jun. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes was $69.7 million and $66.1 million for the three months ended June 30, 2024 and 2023, respectively. The effective income tax rate was 23.3% and 25.0% for the three months ended June 30, 2024 and 2023, respectively. The effective income tax rate is lower in the current year primarily due to larger benefit of research and development tax credits. The provision for income taxes was $118.8 million and $151.6 million for the six months ended June 30, 2024 and 2023, respectively. The effective income tax rate was 21.3% and 23.5% for the six months ended June 30, 2024 and 2023, respectively. The effective income tax rate was higher in the prior year primarily due to the impact of the sale of the TalentNeuron business. The Company had gross unrecognized tax benefits of $157.6 million on June 30, 2024 and $148.4 million on December 31, 2023. It is reasonably possible that gross unrecognized tax benefits will decrease by approximately $9.3 million within the next twelve months due to the anticipated closure of audits and the expiration of certain statutes of limitation. In January 2024, the Company completed an intercompany transfer of certain intellectual property (“IP”). The tax impact of the transfer did not have a significant impact on our effective tax rate. Prior to the sale, the Company had a $103.1 million deferred tax asset for tax basis in the related IP and a full valuation allowance due to no expected local tax benefit of the asset. As a result of the IP transfer, the deferred tax asset and related valuation allowance were written off with no impact to tax expense. The Company’s intellectual property footprint continues to evolve and may result in tax rate volatility in the future. The Organization for Economic Co-operation and Development (“the OECD”) has issued various tax proposals including a two-pillar approach to global taxation (BEPS 2.0/ Pillar Two), focusing on global profit allocation and a 15% global corporate minimum tax rate. Several countries in which Gartner does business have proposed or enacted new laws to align with OECD Pillar Two proposals. The minimum tax is treated as a current cost beginning in 2024 and does not have a significant impact on the Company's effective tax rate for the current period. Significant details around the provisions are still uncertain as the OECD and participating countries continue to work on defining the underlying rules and administrative procedures. The Company will continue to monitor and reflect the impact of such legislative changes in future financial statements as appropriate.

v3.24.2

Derivatives and Hedging	6 Months Ended
	Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging	Derivatives and Hedging The Company enters into a limited number of derivative contracts to mitigate the cash flow risk associated with changes in interest rates on variable-rate debt and changes in foreign exchange rates on forecasted foreign currency transactions. The Company accounts for its outstanding derivative contracts in accordance with FASB ASC Topic 815, which requires all derivatives, including derivatives designated as accounting hedges, to be recorded on the balance sheet at fair value. The tables below provide information regarding the Company’s outstanding derivative contracts as of the dates indicated (in thousands, except for number of contracts). June 30, 2024 Derivative Contract Type Number of Contracts Notional Amounts Fair Value Asset (Liability), Net (3) Balance Sheet Line Item Unrealized Loss Recorded in AOCL, net of tax Interest rate swap (1) 1  $ 350,000  $ 1,108  Other assets $ (16,912) 6,827  Other current assets Foreign currency forwards (2) 31  195,193  (183) Accrued liabilities —  Total 32  $ 545,193  $ 7,752    $ (16,912) December 31, 2023 Derivative Contract Type Number of Contracts Notional Amounts Fair Value Asset (Liability), Net (3) Balance Sheet Line Item Unrealized Loss Recorded in AOCL, net of tax Interest rate swap (1) 1  $ 350,000  $ 1,097  Other assets $ (24,162) 5,962  Other current assets Foreign currency forwards (2) 111  525,719  180  Other current assets —  Total 112  $ 875,719  $ 7,239    $ (24,162) (1)Effective June 30, 2020, the Company de-designated all of its interest rate swaps and discontinued hedge accounting. Accordingly, subsequent changes to fair value of the interest rate swap are recorded in Other income, net. The amounts previously recorded in Accumulated other comprehensive loss are amortized into Interest expense, net over the terms of the hedged forecasted interest payments. See Note 8 — Debt for additional information regarding the Company’s interest rate swap contract. (2)The Company has foreign exchange transaction risk because it typically enters into transactions in the normal course of business that are denominated in foreign currencies that differ from the local functional currency. The Company enters into short-term foreign currency forward exchange contracts to mitigate the cash flow risk associated with changes in foreign currency rates on forecasted foreign currency transactions. These contracts are accounted for at fair value with realized and unrealized gains and losses recognized in Other income, net because the Company does not designate these contracts as hedges for accounting purposes. All of the outstanding foreign currency forward exchange contracts at June 30, 2024 matured before July 31, 2024. (3)See Note 12 — Fair Value Disclosures for the determination of the fair values of these instruments. At June 30, 2024, all of the Company’s derivative counterparties were investment grade financial institutions. The Company did not have any collateral arrangements with its derivative counterparties and none of the derivative contracts contained credit-risk related contingent features. The table below provides information regarding amounts recognized in the accompanying Condensed Consolidated Statements of Operations for derivative contracts for the periods indicated (in thousands). Three Months Ended Six Months Ended   June 30, June 30, Amount recorded in: 2024 2023 2024 2023 Interest expense, net (1) $ 4,870  $ 5,094  $ 9,676  $ 10,211  Other (income) expense, net (2) (1,755) (7,704) (6,069) (5,800) Total (income) expense, net $ 3,115  $ (2,610) $ 3,607  $ 4,411  (1)Consists of interest expense from interest rate swap contracts. (2)Consists of net realized and unrealized gains and losses on foreign currency forward contracts and gains and losses on de-designated interest rate swaps.

v3.24.2

Fair Value Disclosures	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Fair Value Disclosures	Fair Value Disclosures   The Company’s financial instruments include cash equivalents, fees receivable from customers, accounts payable and accrued liabilities, all of which are normally short-term in nature. The Company believes that the carrying amounts of these financial instruments reasonably approximate their fair values due to their short-term nature. The Company’s financial instruments also include its outstanding variable-rate borrowings under the 2024 Credit Agreement. The Company believes that the carrying amounts of its variable-rate borrowings reasonably approximate their fair values because the rates of interest on those borrowings reflect current market rates of interest for similar instruments with comparable maturities. The Company enters into a limited number of derivatives transactions but does not enter into repurchase agreements, securities lending transactions or master netting arrangements. Receivables or payables that result from derivatives transactions are recorded gross in the Company’s Condensed Consolidated Balance Sheets. FASB ASC Topic 820 provides a framework for the measurement of fair value and a valuation hierarchy based on the transparency of inputs used in the valuation of assets and liabilities. Classification within the valuation hierarchy is based on the lowest level of input that is significant to the resulting fair value measurement. The valuation hierarchy contains three levels. Level 1 measurements consist of quoted prices in active markets for identical assets or liabilities. Level 2 measurements include significant other observable inputs such as quoted prices for similar assets or liabilities in active markets; identical assets or liabilities in inactive markets; observable inputs such as interest rates and yield curves; and other market-corroborated inputs. Level 3 measurements include significant unobservable inputs such as internally-created valuation models. Generally, the Company does not utilize Level 3 valuation inputs to remeasure any of its assets or liabilities. However, Level 3 inputs may be used by the Company when certain long-lived assets, including identifiable intangible assets, goodwill, and right-of-use assets are measured at fair value on a nonrecurring basis when there are indicators of impairment. Additionally, Level 3 inputs may be used by the Company in its required annual impairment review of goodwill. Information regarding the periodic assessment of the Company’s goodwill is included in Note 3 — Goodwill and Intangible Assets. The Company does not typically transfer assets or liabilities between different levels of the valuation hierarchy. The table below presents the fair values of certain financial assets and liabilities that are measured at fair value on a recurring basis in the Company's financial statements (in thousands). Description June 30, 2024 December 31, 2023 Assets:     Values based on Level 1 inputs: Deferred compensation plan assets (1) $ 13,766  $ 10,290  Total Level 1 inputs 13,766  10,290  Values based on Level 2 inputs: Deferred compensation plan assets (1) 122,865  104,555  Foreign currency forward contracts (2) 81  1,646  Interest rate swap contract (3) 7,935  7,059  Total Level 2 inputs 130,881  113,260  Total Assets $ 144,647  $ 123,550  Liabilities:     Values based on Level 2 inputs: Deferred compensation plan liabilities (1) $ 139,856  $ 121,708  Foreign currency forward contracts (2) 264  1,466  Total Level 2 inputs 140,120  123,174  Total Liabilities $ 140,120  $ 123,174  (1)The Company has a deferred compensation plan for the benefit of certain highly compensated officers, managers and other key employees. The assets consist of investments in money market funds, mutual funds and company-owned life insurance contracts, which are valued based on Level 1 or Level 2 inputs. The related deferred compensation plan liabilities are recorded at fair value, or the estimated amount needed to settle the liability, which the Company considers to be a Level 2 input. (2)The Company enters into foreign currency forward exchange contracts to hedge the effects of adverse fluctuations in foreign currency exchange rates (see Note 11 — Derivatives and Hedging). Valuation of these contracts is based on observable foreign currency exchange rates in active markets, which the Company considers to be a Level 2 input. (3)The Company has an interest rate swap contract that hedges the risk of variability from interest payments on its borrowings (see Note 8 — Debt). The fair value of the interest rate swap is based on mark-to-market valuations prepared by a third-party broker. This valuation is based on observable interest rates from recently executed market transactions and other observable market data, which the Company considers to be Level 2 inputs. The Company independently corroborates the reasonableness of the valuations prepared by the third-party broker by using an electronic quotation service. The table below presents the carrying amounts (net of deferred financing costs) and fair values of financial instruments that are not recorded at fair value in the Company’s Condensed Consolidated Balance Sheets (in thousands). The estimated fair value of the financial instruments was derived from quoted market prices provided by an independent dealer, which the Company considers to be a Level 2 input. Carrying Amount Fair Value June 30, December 31, June 30, December 31, Description 2024 2023 2024 2023 2028 Notes $ 794,685  $ 794,088  $ 770,264  $ 759,040  2029 Notes 595,227  594,794  548,016  543,408  2030 Notes 793,635  793,189  716,816  709,600  Total $ 2,183,547  $ 2,182,071  $ 2,035,096  $ 2,012,048  Assets and liabilities measured at fair value on a non-recurring basis The Company’s certain long-lived assets, including identifiable intangible assets, goodwill, right-of-use assets and other long-lived assets, are measured at fair value on a nonrecurring basis when there are indicators of impairment. The Company recorded impairment losses during the three months ended June 30, 2023 of $10.0 million, and $0.5 million and $18.7 million for the six months ended June 30, 2024 and 2023, respectively, on right-of-use assets and other long-lived assets primarily related to certain office leases that the Company determined will no longer be used. The impairments were derived by comparing the fair value of the impacted assets to the carrying value of those assets as of the impairment measurement date, as required under ASC Topic 360 using Level 3 inputs. See Note 14 — Leases for additional discussion related to these impairment charges.

v3.24.2

Contingencies	6 Months Ended
	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Legal Matters. The Company is involved in legal proceedings and litigation arising in the ordinary course of business. A provision is recorded for pending litigation in the Company’s consolidated financial statements when it is determined that an unfavorable outcome is probable and the amount of the loss can be reasonably estimated. The Company believes that the potential liability, if any, in excess of amounts already accrued from all proceedings, claims and litigation will not have a material effect on its financial position, cash flows or results of operations when resolved in a future period. Indemnifications. The Company has various agreements that may obligate it to indemnify the other party with respect to certain matters. Generally, these indemnification clauses are included in contracts arising in the normal course of business under which the Company customarily agrees to hold the other party harmless against losses arising from a breach of representations related to matters such as title to assets sold and licensed or certain intellectual property rights. It is not possible to predict the maximum potential amount of future payments under these indemnification agreements due to the conditional nature of the Company’s obligations and the unique facts of each particular agreement. Historically, payments made by the Company under these agreements have not been material. As of June 30, 2024, the Company did not have any material payment obligations under any such indemnification agreements.

v3.24.2

Leases	6 Months Ended
	Jun. 30, 2024
Leases [Abstract]
Leases	Leases The Company’s leasing activities are primarily for facilities under cancelable and non-cancelable lease agreements expiring during 2024 and through 2038. These facilities support our executive and administrative activities, sales, systems support, operations, and other functions. The Company also has leases for office equipment and other assets, which are not significant. Certain of these lease agreements include (i) renewal options to extend the lease term for up to ten years and/or (ii) options to terminate the agreement within one year. Additionally, certain of the Company’s lease agreements provide standard recurring escalations of lease payments for, among other things, increases in a lessor’s maintenance costs and taxes. Under some lease agreements, the Company may be entitled to allowances, free rent, lessor-financed tenant improvements and other incentives. The Company’s lease agreements do not contain any material residual value guarantees or material restrictive covenants. The Company subleases certain office space that it does not intend to occupy. Such sublease arrangements expire during 2024 and through 2032 and primarily relate to facilities in Arlington, Virginia. Certain of the Company’s sublease agreements: (i) include renewal and termination options; (ii) provide for customary escalations of lease payments in the normal course of business; and (iii) grant the subtenant certain allowances, free rent, Gartner-financed tenant improvements and other incentives. All of the Company’s leasing and subleasing activity is recognized in Selling, general and administrative expense in the accompanying Condensed Consolidated Statements of Operations. The table below presents the Company’s net lease cost and certain other information related to the Company’s leasing activities as of and for the periods indicated (dollars in thousands). Three Months Ended Six Months Ended June 30, June 30, Description: 2024 2023 2024 2023 Operating lease cost (1) $ 25,656  $ 28,567  $ 51,559  $ 57,366  Lease cost (2) 5,073  5,560  10,704  10,280  Sublease income (11,807) (13,284) (23,689) (25,925) Total lease cost, net (3) (4) $ 18,922  $ 20,843  $ 38,574  $ 41,721  Cash paid for amounts included in the measurement of operating lease liabilities $ 38,787  $ 35,194  $ 72,836  $ 70,142  Cash receipts from sublease arrangements $ 11,984  $ 12,779  $ 23,094  $ 25,218  Right-of-use assets obtained in exchange for new operating lease liabilities $ 3,944  $ 6,344  $ 10,735  $ 7,991  (1)Included in operating lease cost was $9.2 million and $10.8 million for the three months ended June 30, 2024 and 2023, respectively, and $18.4 million and $21.4 million for the six months ended June 30, 2024 and 2023, respectively, for costs related to subleasing activities. (2)These amounts are primarily variable lease and nonlease costs that are not fixed at the lease commencement date or are dependent on something other than an index or a rate. (3)The Company did not capitalize any operating lease costs during any of the periods presented. (4)Amount excludes impairment charges on lease related assets, as discussed below. The table below indicates where the discounted operating lease payments from the above table are classified in the accompanying Condensed Consolidated Balance Sheets (in thousands). June 30, December 31, Description: 2024 2023 Accounts payable and accrued liabilities $ 92,567  $ 98,493  Operating lease liabilities 471,553  513,406  Total operating lease liabilities included in the Condensed Consolidated Balance Sheets $ 564,120  $ 611,899  As a result and in consideration of the changing nature of the Company’s use of office space, the Company continues to evaluate its existing real estate lease portfolio. In connection with this evaluation, the Company reviewed certain of its right-of-use assets and related other long-lived assets for impairment under ASC 360. As a result of the evaluation, the Company recognized impairment losses during the three months ended June 30, 2023 of $10.0 million, and $0.5 million and $18.7 million for the six months ended June 30, 2024 and 2023, respectively, which are included as a component of Selling, general and administrative expenses in the accompanying Condensed Consolidated Statements of Operations. The impairment losses recorded include $7.1 million related to right-of-use assets and $2.9 million related to other long-lived assets, primarily leasehold improvements, for the three months ended June 30, 2023. The impairment losses recorded include $0.4 million and $5.3 million related to right-of-use assets and $0.1 million and $13.4 million related to other long-lived assets, primarily leasehold improvements, for the six months ended June 30, 2024 and 2023, respectively. 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 values 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 Company’s leasing activities are primarily for facilities under cancelable and non-cancelable lease agreements expiring during 2024 and through 2038. These facilities support our executive and administrative activities, sales, systems support, operations, and other functions. The Company also has leases for office equipment and other assets, which are not significant. Certain of these lease agreements include (i) renewal options to extend the lease term for up to ten years and/or (ii) options to terminate the agreement within one year. Additionally, certain of the Company’s lease agreements provide standard recurring escalations of lease payments for, among other things, increases in a lessor’s maintenance costs and taxes. Under some lease agreements, the Company may be entitled to allowances, free rent, lessor-financed tenant improvements and other incentives. The Company’s lease agreements do not contain any material residual value guarantees or material restrictive covenants. The Company subleases certain office space that it does not intend to occupy. Such sublease arrangements expire during 2024 and through 2032 and primarily relate to facilities in Arlington, Virginia. Certain of the Company’s sublease agreements: (i) include renewal and termination options; (ii) provide for customary escalations of lease payments in the normal course of business; and (iii) grant the subtenant certain allowances, free rent, Gartner-financed tenant improvements and other incentives. All of the Company’s leasing and subleasing activity is recognized in Selling, general and administrative expense in the accompanying Condensed Consolidated Statements of Operations. The table below presents the Company’s net lease cost and certain other information related to the Company’s leasing activities as of and for the periods indicated (dollars in thousands). Three Months Ended Six Months Ended June 30, June 30, Description: 2024 2023 2024 2023 Operating lease cost (1) $ 25,656  $ 28,567  $ 51,559  $ 57,366  Lease cost (2) 5,073  5,560  10,704  10,280  Sublease income (11,807) (13,284) (23,689) (25,925) Total lease cost, net (3) (4) $ 18,922  $ 20,843  $ 38,574  $ 41,721  Cash paid for amounts included in the measurement of operating lease liabilities $ 38,787  $ 35,194  $ 72,836  $ 70,142  Cash receipts from sublease arrangements $ 11,984  $ 12,779  $ 23,094  $ 25,218  Right-of-use assets obtained in exchange for new operating lease liabilities $ 3,944  $ 6,344  $ 10,735  $ 7,991  (1)Included in operating lease cost was $9.2 million and $10.8 million for the three months ended June 30, 2024 and 2023, respectively, and $18.4 million and $21.4 million for the six months ended June 30, 2024 and 2023, respectively, for costs related to subleasing activities. (2)These amounts are primarily variable lease and nonlease costs that are not fixed at the lease commencement date or are dependent on something other than an index or a rate. (3)The Company did not capitalize any operating lease costs during any of the periods presented. (4)Amount excludes impairment charges on lease related assets, as discussed below. The table below indicates where the discounted operating lease payments from the above table are classified in the accompanying Condensed Consolidated Balance Sheets (in thousands). June 30, December 31, Description: 2024 2023 Accounts payable and accrued liabilities $ 92,567  $ 98,493  Operating lease liabilities 471,553  513,406  Total operating lease liabilities included in the Condensed Consolidated Balance Sheets $ 564,120  $ 611,899  As a result and in consideration of the changing nature of the Company’s use of office space, the Company continues to evaluate its existing real estate lease portfolio. In connection with this evaluation, the Company reviewed certain of its right-of-use assets and related other long-lived assets for impairment under ASC 360. As a result of the evaluation, the Company recognized impairment losses during the three months ended June 30, 2023 of $10.0 million, and $0.5 million and $18.7 million for the six months ended June 30, 2024 and 2023, respectively, which are included as a component of Selling, general and administrative expenses in the accompanying Condensed Consolidated Statements of Operations. The impairment losses recorded include $7.1 million related to right-of-use assets and $2.9 million related to other long-lived assets, primarily leasehold improvements, for the three months ended June 30, 2023. The impairment losses recorded include $0.4 million and $5.3 million related to right-of-use assets and $0.1 million and $13.4 million related to other long-lived assets, primarily leasehold improvements, for the six months ended June 30, 2024 and 2023, respectively. 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 values 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.

v3.24.2

Subsequent Events	6 Months Ended
	Jun. 30, 2024
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On July 25, 2024 the Company entered into a settlement agreement to resolve litigation concerning the Company's event cancellation insurance for 2020 and 2021. The settlement resolves all remaining 2020 and 2021 event cancellation insurance claims for $300.0 million. The Company expects to receive the settlement payment from the insurer during the third quarter of 2024. On July 25, 2024, the Company’s Board of Directors authorized incremental share repurchases of up to an additional $600.0 million of Gartner’s common stock. This authorization is in addition to the previously authorized repurchases of up to $4.7 billion, which, as of the end of July 2024, had approximately $450.0 million remaining.

v3.24.2

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Pay vs Performance Disclosure
Net income	$ 229,548	$ 210,545	$ 198,043	$ 295,783	$ 440,093	$ 493,826

v3.24.2

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

v3.24.2

Business and Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Segments	Segments. Gartner delivers its products and services globally through three business segments: Research, Conferences and Consulting. Revenues and other financial information for the Company’s segments are discussed in Note 7 — Segment Information.
Basis of presentation	Basis of presentation. The accompanying interim Condensed Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”), as defined in Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 270 for interim financial information and with the applicable instructions of U.S. Securities and Exchange Commission (“SEC”) Rule 10-01 of Regulation S-X on Form 10-Q, and should be read in conjunction with the consolidated financial statements and related notes of the Company in its Annual Report on Form 10-K for the year ended December 31, 2023. The fiscal year of Gartner is the twelve-month period from January 1 through December 31. In the opinion of management, all normal recurring accruals and adjustments considered necessary for a fair presentation of financial position, results of operations and cash flows at the dates and for the periods presented herein have been included. The results of operations for the three and six months ended June 30, 2024 may not be indicative of the results of operations for the remainder of 2024 or beyond. When used in these notes, the terms “Gartner,” the “Company,” “we,” “us,” or “our” refer to Gartner, Inc. and its consolidated subsidiaries.
Principles of consolidation	Principles of consolidation. The accompanying interim Condensed Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated.
Use of estimates	Use of estimates. The preparation of the accompanying interim Condensed Consolidated Financial Statements requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities, and reported amounts of revenues and expenses. Such estimates include the valuation of fees receivable, goodwill, intangible assets and other long-lived assets, as well as tax accruals and other liabilities. In addition, estimates are used in revenue recognition, income tax expense or benefit, performance-based compensation charges, depreciation and amortization. Management believes its use of estimates in these interim Condensed Consolidated Financial Statements to be reasonable. Management continually evaluates and revises its estimates using historical experience and other factors, including the general economic environment and actions it may take in the future. Management adjusts these estimates when facts and circumstances dictate. However, these estimates may involve significant uncertainties and judgments and cannot be determined with precision. In addition, these estimates are based on management’s best judgment at a point in time. As a result, differences between estimates and actual results could be material and would be reflected in the Company’s consolidated financial statements in future periods.
Cash and cash equivalents and restricted cash	Cash and cash equivalents and restricted cash. Below is a table presenting the beginning-of-period and end-of-period cash amounts from the Company’s Condensed Consolidated Balance Sheets and the total cash amounts presented in the Condensed Consolidated Statements of Cash Flows (in thousands). June 30, December 31, 2024 2023 Cash and cash equivalents $ 1,235,785  $ 1,318,999  Restricted cash classified in (1): Prepaid expenses and other current assets —  600  Cash and cash equivalents and restricted cash $ 1,235,785  $ 1,319,599  (1)Restricted cash consisted of an escrow account established in connection with one of the Company’s business acquisitions. Generally, such cash is restricted to use due to provisions contained in the underlying acquisition agreement. During the three months ended June 30, 2024,the Company paid $0.6 million of restricted cash for deferred consideration related to a 2022 acquisition.
Revenue recognition	Revenue recognition. Revenue is recognized in accordance with the requirements of FASB ASC Topic 606, Revenue from Contracts with Customers (“ASC Topic 606”). Revenue is only recognized when all of the required criteria for revenue recognition have been met. The accompanying Condensed Consolidated Statements of Operations present revenue net of any sales or value-added taxes that we collect from customers and remit to government authorities. ASC Topic 270 requires certain disclosures in interim financial statements around the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers.
Accounting standards issued but not yet adopted	Accounting standards issued but not yet adopted. The FASB has issued accounting standards that have not yet become effective as of June 30, 2024 and may impact the Company’s Consolidated Financial Statements or related disclosures in future periods. The standards and their potential impacts are discussed below. Income Taxes— In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures (“ASU No. 2023-09”). The amendments in this ASU are expected to enhance the transparency and decision usefulness of income tax disclosures. ASU 2023-09 requires entities to enhance income tax disclosures primarily related to the rate reconciliation and income taxes paid information. Companies will need to disaggregate the disclosure of income taxes paid (net of refunds received) by federal, state, and foreign taxes on an annual basis. Additionally, on an annual basis, companies would disclose income taxes paid disaggregated by individual jurisdiction using a quantitative threshold of 5% of total income taxes paid. Public business entities would also be required to provide, on an annual basis, rate reconciliation information by specific categories, including state and local income tax, the effect of cross-border tax laws, foreign tax effects, changes in prior year unrecognized tax benefits, and tax credits, among others. Additionally, some categories would then require disaggregation based on a quantitative threshold of 5%. The foreign tax effect category requires disaggregation by both jurisdiction and nature. The ASU also requires additional qualitative disclosures. All public entities will be required to report income tax information in accordance with the new guidance starting in annual periods beginning after December 15, 2024. The Company expects this ASU to only impact its disclosures with no impacts to the Company’s results of operations, cash flows, and financial condition. Segment Reporting— In November 2023, the FASB issued ASU 2023-07, Segment Reporting: Improvements in Reportable Segment Disclosures (“ASU No. 2023-07”). The amendments in the ASU are expected to improve disclosures about a public entity’s reportable segments and addresses requests from investors and other allocators of capital for additional, more detailed information about a reportable segment’s expenses. ASU 2023-07 requires public companies to disclose, on an annual and interim basis, significant expenses that are regularly provided to the chief operating decision maker (CODM) and included within each reported measure of segment profit and loss. The amendments in the ASU require that a public company provide all annual disclosures about a reportable segment’s profit or loss and assets currently required under ASC 280 in interim periods. The amendments in the ASU also require that a public entity disclose, on an annual and interim basis, an amount for other segment items by reportable segment and a description of its composition. The other segment items category is the difference between segment revenue less the significant expenses disclosed and each reported measure of segment profit or loss. The amendments in the ASU, among other items, also requires that a public company disclose the title and position of the CODM and an explanation of how the CODM uses the reported measure(s) of segment profit or loss in assessing segment performance and deciding how to allocate resources. The ASU applies to all public entities that are required to report segment information in accordance with Topic 280. All public entities will be required to report segment information in accordance with the new guidance starting in annual periods beginning after December 15, 2023 and for interim periods within annual periods beginning after December 15, 2024. The Company expects this ASU to only impact its disclosures with no impacts to the Company’s results of operations, cash flows, and financial condition.

v3.24.2

Business and Basis of Presentation (Tables)	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Cash and Cash Equivalents	Below is a table presenting the beginning-of-period and end-of-period cash amounts from the Company’s Condensed Consolidated Balance Sheets and the total cash amounts presented in the Condensed Consolidated Statements of Cash Flows (in thousands). June 30, December 31, 2024 2023 Cash and cash equivalents $ 1,235,785  $ 1,318,999  Restricted cash classified in (1): Prepaid expenses and other current assets —  600  Cash and cash equivalents and restricted cash $ 1,235,785  $ 1,319,599  (1)Restricted cash consisted of an escrow account established in connection with one of the Company’s business acquisitions. Generally, such cash is restricted to use due to provisions contained in the underlying acquisition agreement. During the three months ended June 30, 2024,the Company paid $0.6 million of restricted cash for deferred consideration related to a 2022 acquisition.
Restrictions on Cash and Cash Equivalents	Below is a table presenting the beginning-of-period and end-of-period cash amounts from the Company’s Condensed Consolidated Balance Sheets and the total cash amounts presented in the Condensed Consolidated Statements of Cash Flows (in thousands). June 30, December 31, 2024 2023 Cash and cash equivalents $ 1,235,785  $ 1,318,999  Restricted cash classified in (1): Prepaid expenses and other current assets —  600  Cash and cash equivalents and restricted cash $ 1,235,785  $ 1,319,599  (1)Restricted cash consisted of an escrow account established in connection with one of the Company’s business acquisitions. Generally, such cash is restricted to use due to provisions contained in the underlying acquisition agreement. During the three months ended June 30, 2024,the Company paid $0.6 million of restricted cash for deferred consideration related to a 2022 acquisition.

v3.24.2

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes to the Carrying Amount of Goodwill by Reporting Unit	The table below presents changes to the carrying amount of goodwill by segment during the six months ended June 30, 2024 (in thousands).   Research Conferences Consulting Total Balance at December 31, 2023 (1) $ 2,657,549  $ 183,997  $ 95,714  $ 2,937,260  Foreign currency translation impact (2,789) (43) (206) (3,038) Balance at June 30, 2024 (1) $ 2,654,760  $ 183,954  $ 95,508  $ 2,934,222  (1)The Company does not have any accumulated goodwill impairment losses.
Schedule of Amortizable Intangible Assets	The tables below present reconciliations of the carrying amounts of the Company’s finite-lived intangible assets as of the dates indicated (in thousands). June 30, 2024 Customer Relationships Technology-related Other Total Gross cost at December 31, 2023 $ 1,077,183  $ 11,200  $ 10,200  $ 1,098,583  Foreign currency translation impact (2,110) —  —  (2,110) Gross cost 1,075,073  11,200  10,200  1,096,473  Accumulated amortization (1) (623,426) (11,200) (6,826) (641,452) Balance at June 30, 2024 $ 451,647  $ —  $ 3,374  $ 455,021  December 31, 2023 Customer Relationships Technology-related Other Total Gross cost $ 1,077,183  11,200  $ 10,200  $ 1,098,583  Accumulated amortization (1) (580,937) (9,333) (6,355) (596,625) Balance at December 31, 2023 $ 496,246  $ 1,867  $ 3,845  $ 501,958  (1) Finite-lived intangible assets are amortized using the straight-line method over the following periods: Customer relationships—6 to 13 years; Technology-related—3 years; and Other—11 years.
Schedule of Estimated Future Amortization Expense by Year	The estimated future amortization expense by year for finite-lived intangible assets is presented in the table below (in thousands). 2024 (remaining six months) $ 44,054  2025 81,308  2026 78,634  2027 78,026  2028 76,554  Thereafter 96,445  $ 455,021

v3.24.2

Revenue and Related Matters (Tables)	6 Months Ended
	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue by Reportable Segment	Disaggregated Revenue — The Company’s disaggregated revenue by reportable segment is presented in the tables below for the periods indicated (in thousands). By Primary Geographic Market (1) Three Months Ended June 30, 2024 Primary Geographic Market Research Conferences Consulting Total United States and Canada $ 832,719  $ 131,119  $ 90,943  $ 1,054,781  Europe, Middle East and Africa 287,650  46,629  34,681  368,960  Other International 145,623  8,336  17,360  171,319  Total revenues $ 1,265,992  $ 186,084  $ 142,984  $ 1,595,060  Three Months Ended June 30, 2023 Primary Geographic Market Research Conferences Consulting Total United States and Canada $ 812,724  $ 123,243  $ 76,413  $ 1,012,380  Europe, Middle East and Africa 258,255  38,803  33,865  330,923  Other International 136,906  6,851  16,125  159,882  Total revenues $ 1,207,885  $ 168,897  $ 126,403  $ 1,503,185  Six Months Ended June 30, 2024 Primary Geographic Market Research Conferences Consulting Total United States and Canada $ 1,667,940  $ 179,209  $ 169,482  $ 2,016,631  Europe, Middle East and Africa 575,193  56,957  71,283  703,433  Other International 291,031  19,987  36,904  347,922  Total revenues $ 2,534,164  $ 256,153  $ 277,669  $ 3,067,986  Six Months Ended June 30, 2023 Primary Geographic Market Research Conferences Consulting Total United States and Canada $ 1,622,123  $ 172,018  $ 153,388  $ 1,947,529  Europe, Middle East and Africa 526,912  48,010  66,803  641,725  Other International 276,041  13,511  33,248  322,800  Total revenues $ 2,425,076  $ 233,539  $ 253,439  $ 2,912,054  (1)Revenue is reported based on where the sale is fulfilled.
Schedule of Disaggregation of Revenue	By Timing of Revenue Recognition Three Months Ended June 30, 2024 Timing of Revenue Recognition Research Conferences Consulting Total Transferred over time (1) $ 1,187,626  $ —  $ 106,584  $ 1,294,210  Transferred at a point in time (2) 78,366  186,084  36,400  300,850  Total revenues $ 1,265,992  $ 186,084  $ 142,984  $ 1,595,060  Three Months Ended June 30, 2023 Timing of Revenue Recognition Research Conferences Consulting Total Transferred over time (1) $ 1,113,328  $ —  $ 103,921  $ 1,217,249  Transferred at a point in time (2) 94,557  168,897  22,482  285,936  Total revenues $ 1,207,885  $ 168,897  $ 126,403  $ 1,503,185  Six Months Ended June 30, 2024 Timing of Revenue Recognition Research Conferences Consulting Total Transferred over time (1) $ 2,369,894  $ —  $ 215,171  $ 2,585,065  Transferred at a point in time (2) 164,270  256,153  62,498  482,921  Total revenues $ 2,534,164  $ 256,153  $ 277,669  $ 3,067,986  Six Months Ended June 30, 2023 Timing of Revenue Recognition Research Conferences Consulting Total Transferred over time (1) $ 2,223,124  $ —  $ 200,928  $ 2,424,052  Transferred at a point in time (2) 201,952  233,539  52,511  488,002  Total revenues $ 2,425,076  $ 233,539  $ 253,439  $ 2,912,054  (1)Research revenues in this category are recognized in connection with performance obligations that are satisfied over time using a time-elapsed output method to measure progress. Consulting revenues in this category are recognized over time using costs incurred to date relative to total estimated costs at completion. (2)The revenues in this category are recognized in connection with performance obligations that are satisfied at the point in time that the contractual deliverables are provided to the customer.
Schedule for Contract with Customer, Asset and Liability	The table below provides information regarding certain of the Company’s balance sheet accounts that pertain to its contracts with customers (in thousands). June 30, December 31, 2024 2023 Assets: Fees receivable, gross (1) $ 1,413,321  $ 1,610,228  Contract assets recorded in Prepaid expenses and other current assets (2) $ 29,773  $ 28,791  Contract liabilities: Deferred revenues (current liability) (3) $ 2,626,511  $ 2,640,515  Non-current deferred revenues recorded in Other liabilities (3) 25,082  33,490  Total contract liabilities $ 2,651,593  $ 2,674,005  (1)Fees receivable represent an unconditional right to payment from the Company’s customers and include both billed and unbilled amounts. (2)Contract assets represent recognized revenue for which the Company does not have an unconditional right to payment as of the balance sheet date because the project may be subject to a progress billing milestone or some other billing restrictions. (3)Deferred revenues represent amounts (i) for which the Company has received an upfront customer payment or (ii) that pertain to recognized fees receivable. Both situations occur before the completion of the Company’s performance obligation(s).

v3.24.2

Computation of Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Schedule Of Basic And Diluted Earnings Per Share Calculations	The table below sets forth the calculation of basic and diluted income per share for the periods indicated (in thousands, except per share data). Three Months Ended Six Months Ended   June 30, June 30,   2024 2023 2024 2023 Numerator:         Net income used for calculating basic and diluted income per share $ 229,548  $ 198,043  $ 440,093  $ 493,826  Denominator:         Weighted average common shares used in the calculation of basic income per share 77,816  79,285  78,078 79,368 Dilutive effect of outstanding awards associated with stock-based compensation plans (1) 472  535  573 647 Shares used in the calculation of diluted income per share 78,288  79,820  78,651 80,015 Basic income per share $ 2.95  $ 2.50  $ 5.64  $ 6.22  Diluted income per share $ 2.93  $ 2.48  $ 5.60  $ 6.17  (1)Certain outstanding awards associated with stock-based compensation plans were not included in the computation of diluted income per share because the effect would have been anti-dilutive. These anti-dilutive outstanding awards associated with stock-based compensation plans was approximately 0.1 million for both the three and six months ended June 30, 2024 and approximately 0.2 million for both the three and six months ended June 30, 2023.

v3.24.2

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Schedule Of Stock-based Compensation Expense By Award Type	The tables below summarize the Company’s stock-based compensation expense by award type and expense category line item during the periods indicated (in millions). Three Months Ended Six Months Ended   June 30, June 30, Award type 2024 2023 2024 2023 Stock appreciation rights $ 3.0  $ 3.1  $ 7.6  $ 5.6  Restricted stock units 36.4  28.9  82.0  71.1  Common stock equivalents 0.3  0.3  0.6  0.6  Total (1) $ 39.7  $ 32.3  $ 90.2  $ 77.3
Schedule Of Stock-Based Compensation Expense By Expense Category	Three Months Ended Six Months Ended   June 30, June 30, Expense category line item 2024 2023 2024 2023 Cost of services and product development $ 15.3  $ 12.7  $ 34.8  $ 31.0  Selling, general and administrative 24.4  19.6  55.4  46.3  Total (1) $ 39.7  $ 32.3  $ 90.2  $ 77.3  (1)Includes costs of $18.4 million and $13.1 million during the three months ended June 30, 2024 and 2023, respectively, and $49.0 million and $39.9 million during the six months ended June 30, 2024 and 2023, respectively, for awards to retirement-eligible employees. Those awards vest on an accelerated basis.

v3.24.2

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Schedule of Segment Reporting Information by Segment	The tables below present information about the Company’s reportable segments for the periods indicated (in thousands). Three Months Ended June 30, 2024 Research Conferences Consulting Consolidated Revenues $ 1,265,992  $ 186,084  $ 142,984  $ 1,595,060  Gross contribution 933,121  108,112  53,719  1,094,952  Corporate and other expenses       (776,169) Operating income       $ 318,783  Three Months Ended June 30, 2023 Research Conferences Consulting Consolidated Revenues $ 1,207,885  $ 168,897  $ 126,403  $ 1,503,185  Gross contribution 885,282  98,450  47,321  1,031,053  Corporate and other expenses (747,946) Operating income $ 283,107  Six Months Ended June 30, 2024 Research Conferences Consulting Consolidated Revenues $ 2,534,164  $ 256,153  $ 277,669  $ 3,067,986  Gross contribution 1,877,690  131,367  108,006  2,117,063  Corporate and other expenses (1,524,395) Operating income $ 592,668  Six Months Ended June 30, 2023 Research Conferences Consulting Consolidated Revenues $ 2,425,076  $ 233,539  $ 253,439  $ 2,912,054  Gross contribution 1,784,796  125,238  98,129  2,008,163  Corporate and other expenses (1,317,099) Operating income $ 691,064
Schedule of Reconciliation of Segment Gross Contribution to Net Income	The table below provides a reconciliation of total segment gross contribution to net income for the periods indicated (in thousands). Three Months Ended Six Months Ended June 30, June 30, 2024 2023 2024 2023 Total segment gross contribution $ 1,094,952  $ 1,031,053  $ 2,117,063  $ 2,008,163  Costs and expenses: Cost of services and product development - unallocated (1) 13,206  15,286  21,832  18,666  Selling, general and administrative 712,071  680,168  1,401,904  1,337,258  Depreciation and amortization 50,534  46,613  99,841  93,244  Acquisition and integration charges 358  1,973  818  3,341    Gain from sale of divested operation —  3,906  —  (135,410) Operating income 318,783  283,107  592,668  691,064  Interest expense and other, net (19,486) (18,983) (33,814) (48,740) Gain on event cancellation insurance claims —  —  —  3,077  Less: Provision for income taxes 69,749  66,081  118,761  151,575  Net income $ 229,548  $ 198,043  $ 440,093  $ 493,826  (1)The unallocated amounts consist of certain bonus and fringe costs recorded in consolidated Cost of services and product development that are not allocated to segment expense. The Company’s policy is to allocate bonuses to segments at 100% of a segment employee’s target bonus. Amounts above or below 100% are absorbed by corporate.

v3.24.2

Debt (Tables)	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Schedule of Debt	The Company’s total outstanding borrowings are summarized in the table below (in thousands). June 30, December 31, Description 2024 2023 2024 Credit Agreement - Revolving facility (1), (2) $ 274,400  $ —  2020 Credit Agreement - Term loan facility —  274,400  2020 Credit Agreement - Revolving credit facility —  —  4.50% Senior Notes due 2028 (“2028 Notes”) 800,000  800,000  3.625% Senior Notes due 2029 (“2029 Notes”) 600,000  600,000  3.75% Senior Notes due 2030 (“2030 Notes”) 800,000  800,000  Other (3) 5,000  5,000  Principal amount outstanding (4) 2,479,400  2,479,400  Less: deferred financing fees (5) (21,528) (21,104) Net balance sheet carrying amount $ 2,457,872  $ 2,458,296  (1)The contractual annualized interest rate as of June 30, 2024 on the 2024 Credit Agreement was 6.725%, which consisted of Term Secured Overnight Financing Rate (“SOFR”) of 5.375% plus a margin of 1.350%. However, the Company has an interest rate swap contract that effectively converts the floating SOFR on outstanding amounts to a fixed base rate. (2)The Company had approximately $0.7 billion of available borrowing capacity on the 2024 Credit Agreement revolver (not including the expansion feature) as of June 30, 2024. (3)Consists of a State of Connecticut economic development loan originated in 2019 with a 10-year maturity and bears interest at a fixed rate of 1.75%. This loan may be repaid at any time by the Company without penalty. (4)The weighted average annual effective rate on the Company’s outstanding debt for the three and six months ended June 30, 2024, including the effects of its interest rate swaps discussed below, was 5.03% and 5.02%, respectively. (5)Deferred financing fees are being amortized to Interest expense, net over the term of the related debt obligation.

v3.24.2

Equity (Tables)	6 Months Ended
	Jun. 30, 2024
Stockholders' Equity Note [Abstract]
Schedule Of Share Repurchase Activity	The Company’s share repurchase activity is presented in the table below for the periods indicated. Three Months Ended Six Months Ended   June 30, June 30,   2024 2023 2024 2023 Number of shares repurchased (1) 778,575  423,833  1,268,309  751,513  Cash paid for repurchased shares (in thousands) (2) $ 339,593  $ 131,522  $ 564,717  $ 238,372  (1)The average purchase price for repurchased shares was $442.60 and $312.95 for the three months ended June 30, 2024 and 2023, respectively, and $449.19 and $321.34 for the six months ended June 30, 2024 and 2023, respectively. The repurchased shares during the three and six months ended June 30, 2024 and 2023 included purchases for both open market purchases and stock-based compensation award settlements. (2)The cash paid for repurchased shares during the six months ended June 30, 2024 excluded $5.0 million of open market purchases with trade dates in June 2024 that settled in July 2024 and excise tax accrued. The cash paid for repurchased shares during the six months ended June 30, 2023 excluded $3.1 million of open market purchases with trade dates in June 2023 that settled in July 2023 and excise tax accrued. The cash paid for repurchased shares during the three months ended June 30, 2024 excluded $5.0 million of open market purchases with trade dates in June 2024 that settled in July 2024 and excise tax accrued. The cash paid for repurchased shares during the three months ended June 30, 2023 included $2.0 million of open market purchases with trade dates in March 2023 that settled in April 2023, and excluded $3.1 million of open market purchases with trade dates in June 2023 that settled in July 2023 and excise tax accrued.
Schedule Of The Changes In Accumulated Other Comprehensive Loss By Component (Net Of Tax)	The tables below provide information about the changes in AOCL by component and the related amounts reclassified out of AOCL to income during the periods indicated (net of tax, in thousands) (1). Three Months Ended June 30, 2024   Interest Rate Swaps Defined Benefit Pension Plans Foreign Currency Translation Adjustments Total Balance – March 31, 2024 $ (20,561) $ (5,680) $ (56,145) $ (82,386) Other comprehensive income (loss) activity during the period:       Change in AOCL before reclassifications to income —  —  (2,967) (2,967)   Reclassifications from AOCL to income (2), (3) 3,649  51  —  3,700  Other comprehensive income (loss), net 3,649  51  (2,967) 733  Balance – June 30, 2024 $ (16,912) $ (5,629) $ (59,112) $ (81,653) Three Months Ended June 30, 2023   Interest Rate Swaps Defined Benefit Pension Plans Foreign Currency Translation Adjustments Total Balance – March 31, 2023 $ (35,414) $ (4,213) $ (56,283) $ (95,910) Other comprehensive income (loss) activity during the period:   Change in AOCL before reclassifications to income —  —  6,932  6,932    Reclassifications from AOCL to income (2), (3) 3,818  33  —  3,851  Other comprehensive income (loss), net 3,818  33  6,932  10,783  Balance – June 30, 2023 $ (31,596) $ (4,180) $ (49,351) $ (85,127) Six Months Ended June 30, 2024 Interest Rate Swaps Defined Benefit Pension Plans Foreign Currency Translation Adjustments Total Balance – December 31, 2023 $ (24,162) $ (5,731) $ (46,438) $ (76,331) Other comprehensive income (loss) activity during the period:   Change in AOCL before reclassifications to income —  —  (12,674) (12,674)   Reclassifications from AOCL to income (2), (3) 7,250  102  —  7,352  Other comprehensive income (loss), net 7,250  102  (12,674) (5,322) Balance – June 30, 2024 $ (16,912) $ (5,629) $ (59,112) $ (81,653) Six Months Ended June 30, 2023 Interest Rate Swaps Defined Benefit Pension Plans Foreign Currency Translation Adjustments Total Balance – December 31, 2022 $ (39,248) $ (4,247) $ (58,115) $ (101,610) Other comprehensive income (loss) activity during the period:   Change in AOCL before reclassifications to income —  —  8,764  8,764    Reclassifications from AOCL to income (2), (3) 7,652  67  —  7,719  Other comprehensive income (loss), net 7,652  67  8,764  16,483  Balance – June 30, 2023 $ (31,596) $ (4,180) $ (49,351) $ (85,127) (1)Amounts in parentheses represent debits (deferred losses). (2)$4.9 million and $5.1 million of the reclassifications related to interest rate swaps (cash flow hedges) were recorded in Interest expense, net, for the three months ended June 30, 2024 and 2023, respectively. $9.7 million and $10.2 million of the reclassifications related to interest rate swaps (cash flow hedges) were recorded in Interest expense, net, for the six months ended June 30, 2024 and 2023, respectively. See Note 8 — Debt and Note 11 — Derivatives and Hedging for information regarding the cash flow hedges. (3)The reclassifications related to defined benefit pension plans were recorded in Other income, net.

v3.24.2

Derivatives and Hedging (Tables)	6 Months Ended
	Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions	The tables below provide information regarding the Company’s outstanding derivative contracts as of the dates indicated (in thousands, except for number of contracts). June 30, 2024 Derivative Contract Type Number of Contracts Notional Amounts Fair Value Asset (Liability), Net (3) Balance Sheet Line Item Unrealized Loss Recorded in AOCL, net of tax Interest rate swap (1) 1  $ 350,000  $ 1,108  Other assets $ (16,912) 6,827  Other current assets Foreign currency forwards (2) 31  195,193  (183) Accrued liabilities —  Total 32  $ 545,193  $ 7,752    $ (16,912) December 31, 2023 Derivative Contract Type Number of Contracts Notional Amounts Fair Value Asset (Liability), Net (3) Balance Sheet Line Item Unrealized Loss Recorded in AOCL, net of tax Interest rate swap (1) 1  $ 350,000  $ 1,097  Other assets $ (24,162) 5,962  Other current assets Foreign currency forwards (2) 111  525,719  180  Other current assets —  Total 112  $ 875,719  $ 7,239    $ (24,162) (1)Effective June 30, 2020, the Company de-designated all of its interest rate swaps and discontinued hedge accounting. Accordingly, subsequent changes to fair value of the interest rate swap are recorded in Other income, net. The amounts previously recorded in Accumulated other comprehensive loss are amortized into Interest expense, net over the terms of the hedged forecasted interest payments. See Note 8 — Debt for additional information regarding the Company’s interest rate swap contract. (2)The Company has foreign exchange transaction risk because it typically enters into transactions in the normal course of business that are denominated in foreign currencies that differ from the local functional currency. The Company enters into short-term foreign currency forward exchange contracts to mitigate the cash flow risk associated with changes in foreign currency rates on forecasted foreign currency transactions. These contracts are accounted for at fair value with realized and unrealized gains and losses recognized in Other income, net because the Company does not designate these contracts as hedges for accounting purposes. All of the outstanding foreign currency forward exchange contracts at June 30, 2024 matured before July 31, 2024. (3)See Note 12 — Fair Value Disclosures for the determination of the fair values of these instruments.
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	The table below provides information regarding amounts recognized in the accompanying Condensed Consolidated Statements of Operations for derivative contracts for the periods indicated (in thousands). Three Months Ended Six Months Ended   June 30, June 30, Amount recorded in: 2024 2023 2024 2023 Interest expense, net (1) $ 4,870  $ 5,094  $ 9,676  $ 10,211  Other (income) expense, net (2) (1,755) (7,704) (6,069) (5,800) Total (income) expense, net $ 3,115  $ (2,610) $ 3,607  $ 4,411  (1)Consists of interest expense from interest rate swap contracts. (2)Consists of net realized and unrealized gains and losses on foreign currency forward contracts and gains and losses on de-designated interest rate swaps.

v3.24.2

Fair Value Disclosures (Tables)	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured to Fair Value on Recurring Basis	The table below presents the fair values of certain financial assets and liabilities that are measured at fair value on a recurring basis in the Company's financial statements (in thousands). Description June 30, 2024 December 31, 2023 Assets:     Values based on Level 1 inputs: Deferred compensation plan assets (1) $ 13,766  $ 10,290  Total Level 1 inputs 13,766  10,290  Values based on Level 2 inputs: Deferred compensation plan assets (1) 122,865  104,555  Foreign currency forward contracts (2) 81  1,646  Interest rate swap contract (3) 7,935  7,059  Total Level 2 inputs 130,881  113,260  Total Assets $ 144,647  $ 123,550  Liabilities:     Values based on Level 2 inputs: Deferred compensation plan liabilities (1) $ 139,856  $ 121,708  Foreign currency forward contracts (2) 264  1,466  Total Level 2 inputs 140,120  123,174  Total Liabilities $ 140,120  $ 123,174  (1)The Company has a deferred compensation plan for the benefit of certain highly compensated officers, managers and other key employees. The assets consist of investments in money market funds, mutual funds and company-owned life insurance contracts, which are valued based on Level 1 or Level 2 inputs. The related deferred compensation plan liabilities are recorded at fair value, or the estimated amount needed to settle the liability, which the Company considers to be a Level 2 input. (2)The Company enters into foreign currency forward exchange contracts to hedge the effects of adverse fluctuations in foreign currency exchange rates (see Note 11 — Derivatives and Hedging). Valuation of these contracts is based on observable foreign currency exchange rates in active markets, which the Company considers to be a Level 2 input. (3)The Company has an interest rate swap contract that hedges the risk of variability from interest payments on its borrowings (see Note 8 — Debt). The fair value of the interest rate swap is based on mark-to-market valuations prepared by a third-party broker. This valuation is based on observable interest rates from recently executed market transactions and other observable market data, which the Company considers to be Level 2 inputs. The Company independently corroborates the reasonableness of the valuations prepared by the third-party broker by using an electronic quotation service.
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments	The table below presents the carrying amounts (net of deferred financing costs) and fair values of financial instruments that are not recorded at fair value in the Company’s Condensed Consolidated Balance Sheets (in thousands). The estimated fair value of the financial instruments was derived from quoted market prices provided by an independent dealer, which the Company considers to be a Level 2 input. Carrying Amount Fair Value June 30, December 31, June 30, December 31, Description 2024 2023 2024 2023 2028 Notes $ 794,685  $ 794,088  $ 770,264  $ 759,040  2029 Notes 595,227  594,794  548,016  543,408  2030 Notes 793,635  793,189  716,816  709,600  Total $ 2,183,547  $ 2,182,071  $ 2,035,096  $ 2,012,048

v3.24.2

Leases (Tables)	6 Months Ended
	Jun. 30, 2024
Leases [Abstract]
Lease Costs	The table below presents the Company’s net lease cost and certain other information related to the Company’s leasing activities as of and for the periods indicated (dollars in thousands). Three Months Ended Six Months Ended June 30, June 30, Description: 2024 2023 2024 2023 Operating lease cost (1) $ 25,656  $ 28,567  $ 51,559  $ 57,366  Lease cost (2) 5,073  5,560  10,704  10,280  Sublease income (11,807) (13,284) (23,689) (25,925) Total lease cost, net (3) (4) $ 18,922  $ 20,843  $ 38,574  $ 41,721  Cash paid for amounts included in the measurement of operating lease liabilities $ 38,787  $ 35,194  $ 72,836  $ 70,142  Cash receipts from sublease arrangements $ 11,984  $ 12,779  $ 23,094  $ 25,218  Right-of-use assets obtained in exchange for new operating lease liabilities $ 3,944  $ 6,344  $ 10,735  $ 7,991  (1)Included in operating lease cost was $9.2 million and $10.8 million for the three months ended June 30, 2024 and 2023, respectively, and $18.4 million and $21.4 million for the six months ended June 30, 2024 and 2023, respectively, for costs related to subleasing activities. (2)These amounts are primarily variable lease and nonlease costs that are not fixed at the lease commencement date or are dependent on something other than an index or a rate. (3)The Company did not capitalize any operating lease costs during any of the periods presented. (4)Amount excludes impairment charges on lease related assets, as discussed below.
Supplemental Balance Sheet Information	The table below indicates where the discounted operating lease payments from the above table are classified in the accompanying Condensed Consolidated Balance Sheets (in thousands). June 30, December 31, Description: 2024 2023 Accounts payable and accrued liabilities $ 92,567  $ 98,493  Operating lease liabilities 471,553  513,406  Total operating lease liabilities included in the Condensed Consolidated Balance Sheets $ 564,120  $ 611,899

v3.24.2

Business and Basis of Presentation - Narrative (Details) $ in Millions	1 Months Ended	6 Months Ended
	Feb. 28, 2023 USD ($)	Jun. 30, 2024 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments | segment		3
Proceeds from event cancellation insurance claims | $	$ 3.1

v3.24.2

Business and Basis of Presentation - Cash and Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 1,235,785	$ 1,318,999
Prepaid expenses and other current assets	0	600
Cash and cash equivalents and restricted cash	1,235,785	$ 1,319,599	$ 1,173,428	$ 698,599
2022 Acquisition
Cash and Cash Equivalents [Line Items]
Deferred consideration	$ 600

v3.24.2

Acquisition and Divestiture (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Feb. 28, 2023
Business Acquisition [Line Items]
Gain from sale of divested operation		$ 0	$ (3,906)	$ 0	$ 135,410
TalentNeuron
Business Acquisition [Line Items]
Gain from sale of divested operation					$ 135,400
TalentNeuron
Business Acquisition [Line Items]
Sale of business, consideration						$ 161,100
Gartner Research Products
Business Acquisition [Line Items]
Percent of outstanding membership interests acquired	100.00%
Purchase price	$ 7,900
Payment for contingent consideration liability, investing activities				$ 2,000

v3.24.2

Goodwill and Intangible Assets - Narrative (Details) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2024	Sep. 30, 2023	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill impairment		$ 0
Amortization of intangibles	$ 22,940,000		$ 22,901,000	$ 45,930,000	$ 45,636,000

v3.24.2

Goodwill and Intangible Assets - Changes to the Carrying Amount of Goodwill by Segment (Details) - USD ($)	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Beginning balance	$ 2,937,260,000
Foreign currency translation impact	(3,038,000)
Ending balance	2,934,222,000
Goodwill, accumulated impairment losses	0	$ 0
Research
Goodwill [Roll Forward]
Beginning balance	2,657,549,000
Foreign currency translation impact	(2,789,000)
Ending balance	2,654,760,000
Conferences
Goodwill [Roll Forward]
Beginning balance	183,997,000
Foreign currency translation impact	(43,000)
Ending balance	183,954,000
Consulting
Goodwill [Roll Forward]
Beginning balance	95,714,000
Foreign currency translation impact	(206,000)
Ending balance	$ 95,508,000

v3.24.2

Goodwill and Intangible Assets - Carrying Amounts of Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Finite-lived Intangible Assets [Roll Forward]
Gross cost, beginning balance	$ 1,098,583
Foreign currency translation impact	(2,110)
Gross cost, ending balance	1,096,473
Accumulated amortization	(641,452)	$ (596,625)
Finite-lived intangible assets, net	455,021	501,958
Customer Relationships
Finite-lived Intangible Assets [Roll Forward]
Gross cost, beginning balance	1,077,183
Foreign currency translation impact	(2,110)
Gross cost, ending balance	1,075,073
Accumulated amortization	(623,426)	(580,937)
Finite-lived intangible assets, net	$ 451,647	496,246
Customer Relationships | Minimum
Finite-lived Intangible Assets [Roll Forward]
Remaining amortization period	6 years
Customer Relationships | Maximum
Finite-lived Intangible Assets [Roll Forward]
Remaining amortization period	13 years
Technology-related
Finite-lived Intangible Assets [Roll Forward]
Gross cost, beginning balance	$ 11,200
Foreign currency translation impact	0
Gross cost, ending balance	11,200
Accumulated amortization	(11,200)	(9,333)
Finite-lived intangible assets, net	$ 0	1,867
Remaining amortization period	3 years
Other
Finite-lived Intangible Assets [Roll Forward]
Gross cost, beginning balance	$ 10,200
Foreign currency translation impact	0
Gross cost, ending balance	10,200
Accumulated amortization	(6,826)	(6,355)
Finite-lived intangible assets, net	$ 3,374	$ 3,845
Other | Maximum
Finite-lived Intangible Assets [Roll Forward]
Remaining amortization period	11 years

v3.24.2

Goodwill and Intangible Assets - Estimated Future Amortization Expense By Year From Amortizable Intangibles (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2024 (remaining six months)	$ 44,054
2025	81,308
2026	78,634
2027	78,026
2028	76,554
Thereafter	96,445
Finite-lived intangible assets, net	$ 455,021	$ 501,958

v3.24.2

Revenue and Related Matters - Disaggregation of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,595,060	$ 1,503,185	$ 3,067,986	$ 2,912,054
United States and Canada
Disaggregation of Revenue [Line Items]
Total revenues	1,054,781	1,012,380	2,016,631	1,947,529
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenues	368,960	330,923	703,433	641,725
Other International
Disaggregation of Revenue [Line Items]
Total revenues	171,319	159,882	347,922	322,800
Research
Disaggregation of Revenue [Line Items]
Total revenues	1,265,992	1,207,885	2,534,164	2,425,076
Research | United States and Canada
Disaggregation of Revenue [Line Items]
Total revenues	832,719	812,724	1,667,940	1,622,123
Research | Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenues	287,650	258,255	575,193	526,912
Research | Other International
Disaggregation of Revenue [Line Items]
Total revenues	145,623	136,906	291,031	276,041
Conferences
Disaggregation of Revenue [Line Items]
Total revenues	186,084	168,897	256,153	233,539
Conferences | United States and Canada
Disaggregation of Revenue [Line Items]
Total revenues	131,119	123,243	179,209	172,018
Conferences | Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenues	46,629	38,803	56,957	48,010
Conferences | Other International
Disaggregation of Revenue [Line Items]
Total revenues	8,336	6,851	19,987	13,511
Consulting
Disaggregation of Revenue [Line Items]
Total revenues	142,984	126,403	277,669	253,439
Consulting | United States and Canada
Disaggregation of Revenue [Line Items]
Total revenues	90,943	76,413	169,482	153,388
Consulting | Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenues	34,681	33,865	71,283	66,803
Consulting | Other International
Disaggregation of Revenue [Line Items]
Total revenues	$ 17,360	$ 16,125	$ 36,904	$ 33,248

v3.24.2

Revenue and Related Matters - Timing Of Revenue Recognition Liabilities per Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,595,060	$ 1,503,185	$ 3,067,986	$ 2,912,054
Transferred over time
Disaggregation of Revenue [Line Items]
Total revenues	1,294,210	1,217,249	2,585,065	2,424,052
Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	300,850	285,936	482,921	488,002
Research
Disaggregation of Revenue [Line Items]
Total revenues	1,265,992	1,207,885	2,534,164	2,425,076
Research | Transferred over time
Disaggregation of Revenue [Line Items]
Total revenues	1,187,626	1,113,328	2,369,894	2,223,124
Research | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	78,366	94,557	164,270	201,952
Conferences
Disaggregation of Revenue [Line Items]
Total revenues	186,084	168,897	256,153	233,539
Conferences | Transferred over time
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Conferences | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	186,084	168,897	256,153	233,539
Consulting
Disaggregation of Revenue [Line Items]
Total revenues	142,984	126,403	277,669	253,439
Consulting | Transferred over time
Disaggregation of Revenue [Line Items]
Total revenues	106,584	103,921	215,171	200,928
Consulting | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	$ 36,400	$ 22,482	$ 62,498	$ 52,511

v3.24.2

Revenue and Related Matters - Revenue Remaining Performance Obligation (Details) $ in Billions	Jun. 30, 2024 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, amount	$ 5.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, amount	$ 1.8
Revenue, remaining performance obligation, expected timing of satisfaction, period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, amount	$ 2.7
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, amount	$ 1.1
Revenue, remaining performance obligation, expected timing of satisfaction, period

v3.24.2

Revenue and Related Matters - Schedule of Contract with Customer, Asset and Liability (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Assets:
Fees receivable, gross	$ 1,413,321		$ 1,413,321		$ 1,610,228
Contract assets recorded in Prepaid expenses and other current assets	29,773		29,773		28,791
Contract liabilities:
Deferred revenues (current liability)	2,626,511		2,626,511		2,640,515
Non-current deferred revenues recorded in Other liabilities	25,082		25,082		33,490
Total contract liabilities	2,651,593		2,651,593		$ 2,674,005
Revenue recognized previously attributable to deferred revenues	$ 1,200,000	$ 1,200,000	$ 1,700,000	$ 1,600,000

v3.24.2

Computation of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator:
Net income used for calculating basic and diluted income per share	$ 229,548	$ 210,545	$ 198,043	$ 295,783	$ 440,093	$ 493,826
Denominator:
Weighted average number of common shares used in the calculation of basic income per share (in shares)	77,816		79,285		78,078	79,368
Dilutive effect of outstanding awards associated with stock-based compensation plans (in shares)	472		535		573	647
Shares used in the calculation of diluted income per share (in shares)	78,288		79,820		78,651	80,015
Basic income per share (in dollars per share)	$ 2.95		$ 2.50		$ 5.64	$ 6.22
Diluted income per share (in dollars per share)	$ 2.93		$ 2.48		$ 5.60	$ 6.17
Antidilutive securities excluded from computation of (loss) income per share (in shares)	100		200		100	200

v3.24.2

Stock-Based Compensation - Narrative (Details) - $ / shares shares in Millions	Jun. 30, 2024	Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]
Number of shares available for grant (in shares)	5.6
Common stock par value (in dollars per share)	$ 0.0005	$ 0.0005

v3.24.2

Stock-Based Compensation - Stock-based Compensation Expense by Award Type and Expense Category (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 39.7	$ 32.3	$ 90.2	$ 77.3
Cost of services and product development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	15.3	12.7	34.8	31.0
Selling, general and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	24.4	19.6	55.4	46.3
Stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	3.0	3.1	7.6	5.6
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	36.4	28.9	82.0	71.1
Common stock equivalents
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	0.3	0.3	0.6	0.6
Retirement Eligible Employees Equity Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 18.4	$ 13.1	$ 49.0	$ 39.9

v3.24.2

Segment Information - Information About Reportable Segments (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) segment	Jun. 30, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			3
Operating income	$ 318,783,000	$ 283,107,000	$ 592,668,000	$ 691,064,000
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues			0
Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,595,060,000	1,503,185,000	3,067,986,000	2,912,054,000
Operating income	1,094,952,000	1,031,053,000	2,117,063,000	2,008,163,000
Operating Segments | Research
Segment Reporting Information [Line Items]
Revenues	1,265,992,000	1,207,885,000	2,534,164,000	2,425,076,000
Operating income	933,121,000	885,282,000	1,877,690,000	1,784,796,000
Operating Segments | Conferences
Segment Reporting Information [Line Items]
Revenues	186,084,000	168,897,000	256,153,000	233,539,000
Operating income	108,112,000	98,450,000	131,367,000	125,238,000
Operating Segments | Consulting
Segment Reporting Information [Line Items]
Revenues	142,984,000	126,403,000	277,669,000	253,439,000
Operating income	53,719,000	47,321,000	108,006,000	98,129,000
Corporate and Reconciling Items
Segment Reporting Information [Line Items]
Operating income	$ (776,169,000)	$ (747,946,000)	$ (1,524,395,000)	$ (1,317,099,000)

v3.24.2

Segment Information - Reconciliation of Segment Gross Contribution to Net Income (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment gross contribution	$ 318,783		$ 283,107		$ 592,668	$ 691,064
Costs and expenses:
Cost of services and product development - unallocated	513,314		487,418		972,755	922,557
Selling, general and administrative	712,071		680,168		1,401,904	1,337,258
Acquisition and integration charges	358		1,973		818	3,341
Gain from sale of divested operation	0		(3,906)		0	135,410
Operating income	318,783		283,107		592,668	691,064
Interest expense and other, net	(19,486)		(18,983)		(33,814)	(48,740)
Gain on event cancellation insurance claims	0		0		0	3,077
Less: Provision for income taxes	69,749		66,081		118,761	151,575
Net income	229,548	$ 210,545	198,043	$ 295,783	$ 440,093	493,826
Maximum
Costs and expenses:
Percent of target bonus charges allocated to segments					100.00%
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment gross contribution	1,094,952		1,031,053		$ 2,117,063	2,008,163
Costs and expenses:
Operating income	1,094,952		1,031,053		2,117,063	2,008,163
Corporate and Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment gross contribution	(776,169)		(747,946)		(1,524,395)	(1,317,099)
Costs and expenses:
Cost of services and product development - unallocated	13,206		15,286		21,832	18,666
Selling, general and administrative	712,071		680,168		1,401,904	1,337,258
Depreciation and amortization	50,534		46,613		99,841	93,244
Acquisition and integration charges	358		1,973		818	3,341
Operating income	$ (776,169)		$ (747,946)		$ (1,524,395)	$ (1,317,099)

v3.24.2

Debt - Borrowings (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
	Mar. 26, 2024	Jun. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Principal amount outstanding		$ 2,479,400	$ 2,479,400	$ 2,479,400
Less: deferred financing fees		(21,528)	(21,528)	(21,104)
Net balance sheet carrying amount		$ 2,457,872	$ 2,457,872	2,458,296
Weighted average effective rate		5.03%	5.02%
Unsecured Debt | Revolving credit facility | 2024 Credit Agreement
Debt Instrument [Line Items]
Principal amount outstanding		$ 274,400	$ 274,400	0
Debt instrument, fixed interest rate		5.375%	5.375%
Contractual annualized interest rate		6.725%	6.725%
Additional interest above base rate			1.35%
Remaining borrowing capacity		$ 700,000	$ 700,000
Debt term	5 years
Term Loan Facility | 2020 Credit Agreement
Debt Instrument [Line Items]
Principal amount outstanding		0	0	274,400
Line of Credit | Revolving credit facility | 2020 Credit Agreement
Debt Instrument [Line Items]
Principal amount outstanding		0	0	0
Senior Notes | 2028 Notes
Debt Instrument [Line Items]
Principal amount outstanding		$ 800,000	$ 800,000	$ 800,000
Debt instrument, fixed interest rate		4.50%	4.50%	4.50%
Senior Notes | 2029 Notes
Debt Instrument [Line Items]
Principal amount outstanding		$ 600,000	$ 600,000	$ 600,000
Debt instrument, fixed interest rate		3.625%	3.625%	3.625%
Senior Notes | 2030 Notes
Debt Instrument [Line Items]
Principal amount outstanding		$ 800,000	$ 800,000	$ 800,000
Debt instrument, fixed interest rate		3.75%	3.75%	3.75%
Other
Debt Instrument [Line Items]
Principal amount outstanding		$ 5,000	$ 5,000	$ 5,000
Connecticut Economic Development Program | Economic Development Loan 2
Debt Instrument [Line Items]
Debt instrument, fixed interest rate		1.75%	1.75%
Debt term			10 years

v3.24.2

Debt - Narrative (Details) - USD ($)					6 Months Ended
	Mar. 26, 2024	Jun. 18, 2021	Sep. 28, 2020	Jun. 22, 2020	Jun. 30, 2024	Mar. 25, 2024	Dec. 31, 2023
2029 Notes | Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount		$ 600,000,000.0
Debt instrument, fixed interest rate					3.625%		3.625%
Debt instrument, issue price, percent		100.00%
2029 Notes | Senior Notes | Debt Instrument Redemption Option One
Debt Instrument [Line Items]
Percentage of principal amount redeemed		40.00%
2030 Notes | Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount			$ 800,000,000.0
Debt instrument, fixed interest rate					3.75%		3.75%
Debt instrument, issue price, percent			100.00%
Percentage of principal amount redeemed			40.00%
2028 Notes | Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount				$ 800,000,000.0
Debt instrument, fixed interest rate					4.50%		4.50%
Debt instrument, issue price, percent				100.00%
Percentage of principal amount redeemed				40.00%
2020 Credit Agreement | Term Loan Facility
Debt Instrument [Line Items]
Aggregate principal amount						$ 400,000,000
Revolving credit facility | 2024 Credit Agreement | Unsecured Debt
Debt Instrument [Line Items]
Aggregate principal amount	$ 1,000,000,000
Debt term	5 years
Line of credit facility, additional borrowing capacity	$ 750,000,000
Long-term line of credit	$ 274,400,000
Additional interest above base rate					1.35%
Debt instrument, fixed interest rate					5.375%
Revolving credit facility | 2024 Credit Agreement | Unsecured Debt | Variable Rate Component One
Debt Instrument [Line Items]
Additional interest above base rate					0.10%
Revolving credit facility | 2024 Credit Agreement | Unsecured Debt | Minimum
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage	0.125%
Revolving credit facility | 2024 Credit Agreement | Unsecured Debt | Minimum | Variable Rate Component Two
Debt Instrument [Line Items]
Additional interest above base rate	1.125%
Revolving credit facility | 2024 Credit Agreement | Unsecured Debt | Maximum
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage	0.25%
Revolving credit facility | 2024 Credit Agreement | Unsecured Debt | Maximum | Variable Rate Component Two
Debt Instrument [Line Items]
Additional interest above base rate	1.75%
Revolving credit facility | 2020 Credit Agreement | Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity						$ 1,000,000,000
Letter of Credit | 2024 Credit Agreement | Unsecured Debt
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 75,000,000

v3.24.2

Debt - Interest Rate Swaps (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($) contract	Dec. 31, 2023 USD ($) contract
Derivative [Line Items]
Number of contracts | contract	32	112
Interest rate swap contracts total notional value	$ 545,193	$ 875,719
Interest rate swaps
Derivative [Line Items]
Term of contract	30 days
Loss on release of interest rate swap recognized in AOCI	$ 22,600
Interest rate swaps | Minimum
Derivative [Line Items]
Fixed interest rate	2.98%
Interest rate swaps | Debt Instrument, Redemption, Period One
Derivative [Line Items]
Number of contracts | contract	1
Interest rate swap contracts total notional value	$ 350,000

v3.24.2

Equity - Narrative (Details) - USD ($) $ in Millions	6 Months Ended	36 Months Ended
	Jun. 30, 2024	Dec. 31, 2023	Dec. 31, 2015
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount			$ 1,200.0
Stock repurchase program, additional authorized amount		$ 3,500.0
Stock repurchase program, remaining authorized repurchase amount	$ 487.8
Interest rate swaps
Equity, Class of Treasury Stock [Line Items]
Loss to be reclassified within twelve months	$ (18.3)

v3.24.2

Equity - Share Repurchase Program and Share Repurchase Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Equity, Class of Treasury Stock [Line Items]
Number of shares repurchased (in shares)	778,575	423,833	1,268,309	751,513
Cash paid for repurchased shares	$ 339,593	$ 131,522	$ 564,717	$ 238,372
Treasury stock, average price paid per share (in dollars per share)	$ 442.60	$ 312.95	$ 449.19	$ 321.34
Open Market Purchases, Excluded
Equity, Class of Treasury Stock [Line Items]
Cash paid for repurchased shares	$ 5,000	$ 3,100	$ 5,000	$ 3,100
Open Market Purchases
Equity, Class of Treasury Stock [Line Items]
Cash paid for repurchased shares		$ 2,000

v3.24.2

Equity - Changes in AOCI/L by Component (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 718,174	$ 680,634	$ 472,858	$ 227,798	$ 680,634	$ 227,798
Change in AOCL before reclassifications to income	(2,967)		6,932		(12,674)	8,764
Reclassifications from AOCL to income	3,700		3,851		7,352	7,719
Other comprehensive income (loss), net of tax	733	(6,055)	10,783	5,700	(5,322)	16,483
Ending balance	646,659	718,174	586,506	472,858	646,659	586,506
Derivative reclassifications	(3,115)		2,610		(3,607)	(4,411)
Interest expense (income), net
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Derivative reclassifications	(4,870)		(5,094)		(9,676)	(10,211)
Interest rate swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Derivative reclassifications	4,900		5,100		9,700	10,200
Interest Rate Swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(20,561)	(24,162)	(35,414)	(39,248)	(24,162)	(39,248)
Change in AOCL before reclassifications to income	0		0		0	0
Reclassifications from AOCL to income	3,649		3,818		7,250	7,652
Other comprehensive income (loss), net of tax	3,649		3,818		7,250	7,652
Ending balance	(16,912)	(20,561)	(31,596)	(35,414)	(16,912)	(31,596)
Defined Benefit Pension Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(5,680)	(5,731)	(4,213)	(4,247)	(5,731)	(4,247)
Change in AOCL before reclassifications to income	0		0		0	0
Reclassifications from AOCL to income	51		33		102	67
Other comprehensive income (loss), net of tax	51		33		102	67
Ending balance	(5,629)	(5,680)	(4,180)	(4,213)	(5,629)	(4,180)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(56,145)	(46,438)	(56,283)	(58,115)	(46,438)	(58,115)
Change in AOCL before reclassifications to income	(2,967)		6,932		(12,674)	8,764
Reclassifications from AOCL to income	0		0		0	0
Other comprehensive income (loss), net of tax	(2,967)		6,932		(12,674)	8,764
Ending balance	(59,112)	(56,145)	(49,351)	(56,283)	(59,112)	(49,351)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(82,386)	(76,331)	(95,910)	(101,610)	(76,331)	(101,610)
Other comprehensive income (loss), net of tax	733	(6,055)	10,783	5,700
Ending balance	$ (81,653)	$ (82,386)	$ (85,127)	$ (95,910)	$ (81,653)	$ (85,127)

v3.24.2

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 69,749	$ 66,081	$ 118,761	$ 151,575
Effective income tax rate	23.30%	25.00%	21.30%	23.50%
Unrecognized tax benefits	$ 157,600		$ 157,600		$ 148,400
Unrecognized tax benefits reductions resulting from anticipated closure of audits and the expiration of certain statutes of limitation			$ 9,300
Deferred tax asset					103,100
Valuation allowance					$ 103,100

v3.24.2

Derivatives and Hedging - Outstanding Derivatives Contracts (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2024 USD ($) contract	Dec. 31, 2023 USD ($) contract
Derivatives, Fair Value [Line Items]
Number of Contracts | contract	32	112
Notional Amounts	$ 545,193	$ 875,719
Fair Value Asset (Liability), Net	7,752	7,239
Unrealized Loss Recorded in AOCL, net of tax	$ (16,912)	$ (24,162)
Other assets | Interest rate swaps | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Number of Contracts | contract	1	1
Notional Amounts	$ 350,000	$ 350,000
Fair Value Asset (Liability), Net	1,108	1,097
Unrealized Loss Recorded in AOCL, net of tax	(16,912)	(24,162)
Other current assets | Interest rate swaps | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Fair Value Asset (Liability), Net	$ 6,827	$ 5,962
Other current assets | Foreign currency forwards | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Number of Contracts | contract		111
Notional Amounts		$ 525,719
Fair Value Asset (Liability), Net		180
Unrealized Loss Recorded in AOCL, net of tax		$ 0
Accrued liabilities | Foreign currency forwards | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Number of Contracts | contract	31
Notional Amounts	$ 195,193
Fair Value Asset (Liability), Net	(183)
Unrealized Loss Recorded in AOCL, net of tax	$ 0

v3.24.2

Derivatives and Hedging - Derivative Gains And Losses That Have Been Recognized In Condensed Consolidated Statements Of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Total (income) expense, net	$ 3,115	$ (2,610)	$ 3,607	$ 4,411
Interest expense (income), net
Derivative Instruments, Gain (Loss) [Line Items]
Total (income) expense, net	$ 4,870	$ 5,094	$ 9,676	$ 10,211
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other income, net	Other income, net	Other income, net	Other income, net
Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Total (income) expense, net	$ (1,755)	$ (7,704)	$ (6,069)	$ (5,800)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other income, net	Other income, net	Other income, net	Other income, net

v3.24.2

Fair Value Disclosures - Assets And Liabilities Measured At Fair Value On Recurring Basis (Details) - Fair Value, Recurring - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Assets:
Total Assets	$ 144,647	$ 123,550
Level 1
Assets:
Total Assets	13,766	10,290
Level 1 | Deferred compensation plan assets
Assets:
Total Assets	13,766	10,290
Level 2
Assets:
Total Assets	130,881	113,260
Liabilities:
Total Liabilities	140,120	123,174
Level 2 | Foreign currency forward contracts
Assets:
Total Assets	81	1,646
Liabilities:
Total Liabilities	264	1,466
Level 2 | Interest rate swap contracts
Assets:
Total Assets	7,935	7,059
Level 2 | Deferred compensation plan assets
Assets:
Total Assets	122,865	104,555
Level 2 | Deferred compensation plan liabilities
Liabilities:
Total Liabilities	$ 139,856	$ 121,708

v3.24.2

Fair Value Disclosures - Fair Value of Debt Instruments (Details) - Senior Notes - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	$ 2,183,547	$ 2,182,071
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	2,035,096	2,012,048
2028 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	794,685	794,088
2028 Notes | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	770,264	759,040
2029 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	595,227	594,794
2029 Notes | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	548,016	543,408
2030 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	793,635	793,189
2030 Notes | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 716,816	$ 709,600

v3.24.2

Fair Value Disclosures - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss on impairment of lease related assets, net		$ 527	$ 18,727
Right-of-use assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss on impairment of lease related assets, net	$ 7,100	400	5,300
Other long-lived assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss on impairment of lease related assets, net	$ 2,900	$ 100	$ 13,400

v3.24.2

Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Lessee, Lease, Description [Line Items]
Renewal term (in years)		10 years
Option to terminate, term (in years)		1 year
Loss on impairment of lease related assets, net		$ 527	$ 18,727
Right-of-use assets
Lessee, Lease, Description [Line Items]
Loss on impairment of lease related assets, net	$ 7,100	400	5,300
Leasehold Improvements
Lessee, Lease, Description [Line Items]
Loss on impairment of lease related assets, net	2,900	100	13,400
Selling, general and administrative
Lessee, Lease, Description [Line Items]
Loss on impairment of lease related assets, net	$ 10,000	$ 500	$ 18,700

v3.24.2

Leases - Net Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Leases [Abstract]
Operating lease cost	$ 25,656	$ 28,567	$ 51,559	$ 57,366
Lease cost	5,073	5,560	10,704	10,280
Sublease income	(11,807)	(13,284)	(23,689)	(25,925)
Total lease cost, net	18,922	20,843	38,574	41,721
Cash paid for amounts included in the measurement of operating lease liabilities	38,787	35,194	72,836	70,142
Cash receipts from sublease arrangements	11,984	12,779	23,094	25,218
Right-of-use assets obtained in exchange for new operating lease liabilities	3,944	6,344	10,735	7,991
Cost for subleasing activities	$ 9,200	$ 10,800	$ 18,400	$ 21,400

v3.24.2

Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Leases [Abstract]
Accounts payable and accrued liabilities	$ 92,567	$ 98,493
Operating lease liabilities	471,553	513,406
Total operating lease liabilities included in the Condensed Consolidated Balance Sheets	$ 564,120	$ 611,899
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accounts payable and accrued liabilities	Accounts payable and accrued liabilities

v3.24.2

Subsequent Events - (Details) - USD ($) $ in Millions		1 Months Ended	36 Months Ended
	Jul. 25, 2024	Feb. 28, 2023	Dec. 31, 2023	Jun. 30, 2024	Dec. 31, 2015
Subsequent Event [Line Items]
Proceeds from event cancellation insurance claims		$ 3.1
Stock repurchase program, additional authorized amount			$ 3,500.0
Stock repurchase program, authorized amount					$ 1,200.0
Stock repurchase program, remaining authorized repurchase amount				$ 487.8
Subsequent Event
Subsequent Event [Line Items]
Proceeds from event cancellation insurance claims	$ 300.0
Stock repurchase program, additional authorized amount	600.0
Stock repurchase program, authorized amount	4,700.0
Stock repurchase program, remaining authorized repurchase amount	$ 450.0

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