10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

(Mark One)

þ	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.
	For the quarterly period ended March 31, 2018
	OR
¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.

Commission File Number 1-14443

Gartner, Inc.

(Exact name of Registrant as specified in its charter)

Delaware	04-3099750
(State or other jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification Number)
P.O. Box 10212	06902-7700
56 Top Gallant Road	(Zip Code)
Stamford, CT
(Address of principal executive offices)

Registrant’s telephone number, including area code: (203) 316-1111

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes þ No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes þ No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company (check one):

Large accelerated filer þ	Accelerated filer ¨	Non-accelerated filer ¨
	Smaller reporting company ¨	Emerging growth company ¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No þ

As of April 30, 2018, 91,240,213 shares of the registrant’s common shares were outstanding.

Table of Contents

	Page
PART I. FINANCIAL INFORMATION
ITEM 1. FINANCIAL STATEMENTS (Unaudited)
Condensed Consolidated Balance Sheets at March 31, 2018 and December 31, 2017	3
Condensed Consolidated Statements of Operations for the Three Months Ended March 31, 2018 and 2017	4
Condensed Consolidated Statements of Comprehensive Income for the Three Months Ended March 31, 2018 and 2017	5
Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2018 and 2017	6
Notes to Condensed Consolidated Financial Statements	7
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	31
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	44
ITEM 4. CONTROLS AND PROCEDURES	45
PART II. OTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS	45
ITEM 1A. RISK FACTORS	45
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	45
ITEM 6. EXHIBITS	47

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PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

GARTNER, INC.

Condensed Consolidated Balance Sheets

(Unaudited; in thousands, except share data)  

	March 31,			December 31,
	2018			2017
Assets
Current assets:
Cash and cash equivalents	$	189,979		$	538,908
Fees receivable, net of allowances of $7,100 and $12,700 respectively	1,134,964			1,176,843
Deferred commissions	207,161			205,260
Prepaid expenses and other current assets	175,204			124,632
Assets held-for-sale	603,354			542,965
Total current assets	2,310,662			2,588,608
Property, equipment and leasehold improvements, net	223,086			221,507
Goodwill	2,956,642			2,987,294
Intangible assets, net	1,247,771			1,292,022
Other assets	176,867			193,742
Total Assets	$	6,915,028		$	7,283,173
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable and accrued liabilities	$	532,538		$	666,821
Deferred revenues	1,719,637			1,630,198
Current portion of long-term debt	789,724			379,721
Liabilities held-for-sale	143,957			145,845
Total current liabilities	3,185,856			2,822,585
Long-term debt, net of deferred financing fees	2,186,061			2,899,124
Other liabilities	555,540			577,999
Total Liabilities	5,927,457			6,299,708
Stockholders’ Equity
Preferred stock, $.01 par value, 5,000,000 shares authorized; none issued or outstanding	—			—
Common stock, $.0005 par value, 250,000,000 shares authorized; 163,602,067 shares issued for both periods	82			82
Additional paid-in capital	1,788,045			1,761,383
Accumulated other comprehensive income, net	32,225			1,508
Accumulated earnings	1,613,980			1,647,284
Treasury stock, at cost, 72,391,175 and 72,779,205 common shares, respectively	(2,446,761		)	(2,426,792		)
Total Stockholders’ Equity	987,571			983,465
Total Liabilities and Stockholders’ Equity	$	6,915,028		$	7,283,173

See the accompanying notes to the condensed consolidated financial statements.

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GARTNER, INC.

Condensed Consolidated Statements of Operations

(Unaudited; in thousands, except per share data)

	Three Months Ended
	March 31,
	2018			2017
Revenues:
Research	$	763,924		$	511,306
Events	46,087			35,269
Consulting	82,896			78,594
Talent Assessment & Other	70,658			—
Total revenues	963,565			625,169
Costs and expenses:
Cost of services and product development	357,209			237,609
Selling, general and administrative	487,745			304,244
Depreciation	16,410			10,240
Amortization of intangibles	51,646			6,290
Acquisition and integration charges	59,266			13,272
Total costs and expenses	972,276			571,655
Operating (loss) income	(8,711		)	53,514
Interest expense, net	(35,059		)	(5,906		)
Other income, net	899			889
(Loss) income before income taxes	(42,871		)	48,497
(Benefit) provision for income taxes	(23,284		)	12,064
Net (loss) income	$	(19,587	)	$	36,433
Net (loss) income per share:
Basic	$	(0.22	)	$	0.44
Diluted	$	(0.22	)	$	0.43
Weighted average shares outstanding:
Basic	91,005			82,835
Diluted	91,005			84,095

See the accompanying notes to the condensed consolidated financial statements.

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GARTNER, INC.

Condensed Consolidated Statements of Comprehensive Income

(Unaudited; in thousands)

	Three Months Ended
	March 31,
	2018			2017
Net (loss) income	$	(19,587	)	$	36,433
Other comprehensive income, net of tax:
Foreign currency translation adjustments	20,547			4,371
Interest rate swaps – net change in deferred gain or loss	10,114			(2,568		)
Pension plans – net change in deferred actuarial loss	56			48
Other comprehensive income, net of tax	30,717			1,851
Comprehensive income	$	11,130		$	38,284

See the accompanying notes to the condensed consolidated financial statements.

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GARTNER, INC.

Condensed Consolidated Statements of Cash Flows

(Unaudited; in thousands)

	Three Months Ended
	March 31,
	2018			2017
Operating activities:
Net (loss) income	$	(19,587	)	$	36,433
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Depreciation and amortization	68,056			16,530
Stock-based compensation expense	30,958			22,576
Deferred taxes	(39,175		)	(11,998		)
Amortization and write-off of deferred financing fees	1,868			468
Changes in assets and liabilities, net of acquisitions:
Fees receivable, net	56,771			(57,919		)
Deferred commissions	(512		)	3,002
Prepaid expenses and other current assets	(53,851		)	(5,315		)
Other assets	14,421			(16,730		)
Deferred revenues	76,854			92,373
Accounts payable, accrued, and other liabilities	(133,079		)	(109,025		)
Cash provided by (used in) operating activities	2,724			(29,605		)
Investing activities:
Additions to property, equipment and leasehold improvements	(17,679		)	(10,700		)
Acquisitions - cash paid (net of cash acquired)	—			(111,165		)
Other	1,000			—
Cash used in investing activities	(16,679		)	(121,865		)
Financing activities:
Proceeds from employee stock purchase plan	4,124			3,022
Proceeds from borrowings	—			955,000
Payments for deferred financing fees	—			(18,773		)
Payments on borrowings	(304,813		)	—
Purchases of treasury stock	(28,394		)	(21,978		)
Cash (used in) provided by financing activities	(329,083		)	917,271
Net (decrease) increase in cash and cash equivalents and restricted cash	(343,038		)	765,801
Effects of exchange rates on cash and cash equivalents and restricted cash	3,610			6,007
Cash and cash equivalents and restricted cash, beginning of period	567,058			499,354
Cash and cash equivalents and restricted cash, end of period	$	227,630		$	1,271,162

See the accompanying notes to the condensed consolidated financial statements.

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GARTNER, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

Note 1 — Business and Basis of Presentation

Business. Gartner, Inc. (NYSE: IT) is the world’s leading research and advisory company and a member of the S&P 500. We equip business leaders with indispensable insights, advice and tools to achieve their mission-critical priorities and build the successful organizations of tomorrow. We believe that we have an unmatched combination of expert-led, practitioner-sourced and data-driven research that steers clients toward the right decisions on the issues that matter most. We're trusted as an objective resource and critical partner by more than 15,000 organizations in more than 100 countries - across all major functions, in every industry and enterprise size. To learn more about how we help decision makers fuel the future of business, visit gartner.com.

Gartner delivers its principal products and services globally through four business segments: Research, Events, Consulting and Talent Assessment & Other. Our revenues by business segment are discussed below under the heading "Revenue Recognition." When used in these notes, the terms “Gartner,” “Company,” “we,” “us,” or “our” refer to Gartner, Inc. and its consolidated subsidiaries.

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 the Financial Accounting Standards Board ("FASB") Accounting Standards Codification (“ASC”) Topic 270 for interim financial information and with the applicable instructions of the 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 filed in its Annual Report on Form 10-K for the year ended December 31, 2017. 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 months ended March 31, 2018 may not be indicative of the results of operations for the remainder of 2018 or beyond.

Principles of consolidation. The accompanying interim condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant 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 our estimates and actual results could be material and would be reflected in the Company’s consolidated financial statements in future periods.

Adoption of new accounting standards. The Company adopted the accounting standards described below during the three months ended March 31, 2018:

Stock Compensation Award Modifications — On January 1, 2018, the Company adopted ASU No. 2017-09, "Compensation—Stock Compensation - Scope of Modification Accounting" ("ASU No. 2017-09"). ASU No. 2017-09 provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. The adoption of ASU No. 2017-09 had no impact on the Company's consolidated financial statements.

Retirement Benefits Cost Presentation — On January 1, 2018, the Company adopted ASU No. 2017-07, "Compensation—Retirement Benefits" ("ASU No. 2017-07"). ASU No. 2017-07 improves the reporting of net benefit cost in the financial statements, and provides additional guidance on the presentation of net benefit cost in the income statement and clarifies the components

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eligible for capitalization. The adoption of ASU No. 2017-07 had an immaterial impact on the classification of benefit expense on the Company's Condensed Consolidated Statements of Operations.

Partial Sales of Non-financial Assets — On January 1, 2018, the Company adopted ASU No. 2017-05, "Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Non-financial Assets" ("ASU No. 2017-05"). ASU No. 2017-05 clarifies the scope of the FASB’s recently established guidance on non-financial asset de-recognition as well as the accounting for partial sales of non-financial assets. It conforms the de-recognition guidance on non-financial assets with the model for revenue transactions. The adoption of ASU No. 2017-05 had no impact on the Company's consolidated financial statements.

Definition of a Business — On January 1, 2018, the Company adopted ASU No. 2017-01, "Clarifying the Definition of a Business" ("ASU No. 2017-01"). ASU No. 2017-01 changes the U.S. GAAP definition of a business. Such change can impact the accounting for asset purchases, acquisitions, goodwill impairment and other assessments. The adoption of ASU No. 2017-01 had no impact on the Company's consolidated financial statements.

Presentation of Restricted Cash — On January 1, 2018, the Company adopted ASU No. 2016-18, "Restricted Cash" ("ASU No. 2016-18"). ASU No. 2016-18 requires that amounts generally described as restricted cash and restricted cash equivalents be presented with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts presented on an entity's statement of cash flows. ASU No. 2016-18 must be applied using a retrospective transition method to each comparative period presented in an entity's financial statements.

As a result of the adoption of ASU No. 2016-18, the Company's restricted cash balances are now included in the beginning-of-period and end-of-period total amounts presented on the accompanying Condensed Consolidated Statements of Cash Flows. When compared to the Company's previously issued statement of cash flows for the three months ended March 31, 2017, the adoption of ASU No. 2016-18 resulted in: (i) a reduction of $18.2 million in cash used in investing activities; (ii) an increase of $43.3 million in the end-of-period total cash amount; and (iii) an increase of $25.1 million in the beginning-of-period total cash amount. Below is a table reconciling the beginning-of-period and end-of-period total cash amounts included in the Condensed Consolidated Balance Sheets to the amounts presented in the Condensed Consolidated Cash Flow Statements (in thousands).

	March 31,				December 31,
	2018		2017		2017		2016
Cash and cash equivalents	$	189,979	$	1,227,891	$	538,908	$	474,233
Restricted cash classified in (1), (2):
Prepaid expenses and other current assets	18,143		25,121		15,148		25,121
Other assets	—		18,150		3,002		—
Cash classified as held-for-sale (3)	19,508		—		10,000		—
Cash and cash equivalents and restricted cash per the Condensed Consolidated Statements of Cash Flows	$	227,630	$	1,271,162	$	567,058	$	499,354

(1) Restricted cash pertains to escrow accounts established in connection with certain of the Company's business acquisitions. Generally, such cash is restricted to use due to provisions contained in the underlying asset purchase agreement. The Company will disburse the restricted cash to the sellers of the businesses upon satisfaction of any contingencies described in such agreements (e.g., potential indemnification claims, etc.).

(2) Restricted cash is recorded in Prepaid expenses and other current assets and Other assets in the Company's consolidated balance sheets with the short-term or long-term classification dependent on the projected timing of disbursements to the sellers.

(3) Represents cash classified as a held-for-sale asset for certain businesses that were acquired as part of the CEB acquisition. See Note 2 — Acquisitions and Divestitures for additional information.

Income Taxes — On January 1, 2018, the Company adopted ASU No. 2016-16, "Intra-Entity Transfers of Assets Other Than Inventory" ("ASU No. 2016-16"). ASU No. 2016-16 accelerates the recognition of taxes on certain intra-entity transactions. U.S. GAAP previously required deferral of the income tax implications of an intercompany sale of assets until the assets were sold to a third party or recovered through use. Under ASU No. 2016-16, the seller’s tax effects and the buyer’s deferred taxes on asset transfers are immediately recognized upon the sale.

Pursuant to the transition rules in ASU No. 2016-16, any taxes attributable to pre-2018 intra-entity transfers that were previously deferred should be accelerated and recorded to accumulated earnings on the date of adoption. As a result of this transition rule, certain of the Company's balance sheet income tax accounts pertaining to pre-2018 intra-entity transfers, which aggregated $13.7 million, were reversed against accumulated earnings on January 1, 2018. ASU No. 2016-16 could have a material post-adoption

8

impact on the Company's consolidated financial statements, depending on the nature, size and tax consequences of future intra-entity transfers, if any. However, ASU 2016-16 had no impact on the Company's operating results during the three months ended March 31, 2018.

Statement of Cash Flows — On January 1, 2018, the Company adopted ASU No. 2016-15, "Classification of Certain Cash Receipts and Cash Payments" ("ASU No. 2016-15"). ASU No. 2016-15 sets forth classification requirements for certain cash flow transactions. The adoption of ASU No. 2016-15 had no impact on the Company's consolidated financial statements.

Financial Instruments Recognition and Measurement — On January 1, 2018, the Company adopted ASU No. 2016-01, "Financial Instruments Overall - Recognition and Measurement of Financial Assets and Liabilities" ("ASU No. 2016-01") to address certain aspects of recognition, measurement, presentation and disclosure of financial instruments. Among the significant changes required by ASU No. 2016-01 is that equity investments are to be measured at fair value with changes in fair value recognized in net income. The adoption of ASU No. 2016-01 had no impact on the Company's consolidated financial statements.

Revenue Recognition — On January 1, 2018, the Company adopted ASU No. 2014-09, "Revenue from Contracts with Customers" ("ASU No. 2014-09"). The adoption of the standard did not have a material impact on the Company's accounting policies or consolidated financial statements. However, as required by ASU No. 2014-09, the Company's disclosures around revenue recognition have been significantly expanded.

The following sections provide an overview of the Company's revenues by segment along with the required disclosures under the new standard:

Our business and our revenues

Gartner delivers its principal products and services globally through four business segments: Research, Events, Consulting and Talent Assessment & Other. Our revenues by business segment are discussed below:

Research

Research provides trusted, objective insights and advice on the mission-critical priorities of leaders across all functional areas of an enterprise through research and other reports, briefings, proprietary tools, access to our analysts, peer networking services and membership programs that enable our clients to make better decisions. Gartner's traditional strengths in information technology (“IT”), marketing and supply chain research were enhanced in 2017 with Gartner's acquisition of CEB Inc. ("CEB"), which added CEB's best practice and talent management research insights across a range of business functions, to include human resources, finance, sales and legal.

Research revenues are mainly derived from subscription contracts for research products, representing approximately 90% of the segment’s revenue. The related revenues are deferred and recognized ratably over the applicable contract term (i.e., as we provide the service over the contract period). Fees derived from assisting organizations in selecting the right business software for their needs are recognized at a point in time (i.e., when the lead is provided to the vendor).

The Company enters into subscription contracts for research products that generally are for twelve-month periods or longer. Approximately 65% of our annual and multi-year Research subscription contracts provide for billing of the first annual period upon signing. In subsequent years, multi-year subscription contracts are normally billed prior to the contract’s anniversary date. Our other Research subscription contracts are usually invoiced in advance, commencing with the contract signing, on (i) a quarterly, monthly or other recurring basis or (ii) in accordance with a customized invoicing schedule. Research contracts are generally non-cancelable and non-refundable, except for government contracts that may have cancellation or fiscal funding clauses, which historically have not produced material cancellations. It is our policy to record the amount of a subscription contract that is billable as a fee receivable at the time the contract is signed with a corresponding amount as deferred revenue because the contract represents a legally enforceable claim.

Events

Events provides business professionals across an organization with the opportunity to learn, share and network. From our flagship Chief Information Officer event, Gartner Symposium/ITxpo, to industry-leading conferences focused on specific business roles and topics, to member-driven sessions, our events enable attendees to experience the best of Gartner insight and advice live.

We earn revenues from both the attendees and exhibitors at our events. Attendees are generally invoiced for the full attendance fee upon their completion of an online registration form or their signing of a contract, while exhibitors typically make several

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individual payments commencing with the signing of a contract. We collect almost all of the invoiced amounts in advance of the related event, resulting in the recording of deferred revenue. We recognize both the attendee and exhibitor revenue as we satisfy our related performance obligations (i.e., when the related symposium, conference, summit or exhibition is held).

The Company defers certain costs directly related to its events and expenses those costs in the period during which the related symposium, conference or exhibition occurs. The Company's policy is to defer only those costs, primarily prepaid site and production services costs, which are incremental and are directly attributable to a specific event. Other costs of organizing and producing our events, primarily Company personnel and non-event specific expenses, are expensed in the period incurred. At the end of each fiscal quarter, the Company assesses, on an event-by-event basis, whether the expected direct costs of producing a scheduled event will exceed the expected revenues. If such costs are expected to exceed revenues, the Company records the expected loss in the period determined.

Consulting

Consulting provides customized solutions to unique client needs through on-site, day-to-day support, as well as proprietary tools for measuring and improving IT performance with a focus on cost, performance, efficiency and quality, and contract optimization services.

Consulting revenues, primarily derived from custom consulting and measurement services, are principally generated from fixed fee or time and materials engagements. Revenues from fixed fee engagements are recognized on a proportional performance basis, while revenues from time and material engagements are recognized as work is delivered and/or services are provided. In both of these circumstances, we satisfy our performance obligations and control of the services are passed to our customers over time (i.e., during the duration of the contract or consulting engagement). On a contract-by-contract basis, we typically use actual labor hours incurred compared to total expected labor hours to measure the Company’s proportional performance in respect of our fixed fee engagements. If our labor and other costs on an individual contract are expected to exceed the total contract value or the contract’s funded ceiling amount, the Company reflects an adjustment to the contract’s overall profitability in the period determined. Revenues related to contract optimization engagements are contingent in nature and are only recognized at a point in time when all of the conditions related to their payment have been satisfied.

Consulting customers are invoiced based on the specific terms and conditions in their underlying contracts. We typically invoice our Consulting customers after we have satisfied some or all of the related performance obligation and the related revenue has been recognized. We record fees receivable for amounts that are billed or billable. We also record contract assets, which represent amounts for which we have recognized revenue but lack the unconditional right to payment as of the balance sheet date due to our required continued performance under the relevant contract, progress billing milestones, or other billing-related restrictions. The Company’s contract assets are discussed below.

Talent Assessment & Other

The Talent Assessment & Other segment helps organizations assess, engage, manage and improve talent. These services are provided through knowledge and skills assessments, training programs, workshops, and survey and questionnaire services.

Talent Assessment & Other segment revenues arising from knowledge and skills assessment services are recognized based on the nature of the underlying contract: (i) ratably over the term of the service period; (ii) upon delivery; or (iii) on a proportional performance basis. Revenues from training programs, workshops, and survey and questionnaire products are primarily recognized upon delivery of the service.

In April 2018, the Company sold its CEB Talent Assessment and CEB Workforce Survey and Analytics businesses, which were reported in the Talent Assessment & Other segment. Note 2 - Acquisitions and Divestitures provides additional information regarding these divestitures.

Overview of ASU No. 2014-09

ASU No. 2014-09 requires a five-step evaluative process that consists of:

(1) Identifying the contract with the customer;

(2) Identifying the performance obligations in the contract;

(3) Determining the transaction price for the contract;

(4) Allocating the transaction price to the performance obligations in the contract; and

(5) Recognizing revenue when (or as) performance obligations are satisfied.

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ASU No. 2014-09 is intended to clarify the principles for recognizing revenue by removing inconsistencies and weaknesses in existing revenue recognition rules; provide a more robust framework for addressing revenue recognition issues; improve comparability of revenue recognition practices across entities, industries, jurisdictions and capital markets; and provide more useful information to users of financial statements through improved disclosures.

The Company adopted ASU No. 2014-09 using the modified retrospective method of adoption. Under this method of adoption, the cumulative effect of applying the new standard is recorded at the date of initial application, with no restatement of the comparative prior periods presented. The adoption of ASU No. 2014-09 did not result in a cumulative effect adjustment to the Company's Accumulated earnings in its consolidated financial statements. However, the adoption of the new standard required reclassifications of certain amounts presented in the Company’s consolidated balance sheet. As of January 1, 2018, these items were (i) the reclassification of certain fees receivable that met the definition of a contract asset, aggregating $26.7 million, from Fees receivable, net to Prepaid expenses and other current assets; and (ii) the reclassification of a refund liability, aggregating $6.2 million, from the allowance for fees receivable to Accounts payable and accrued liabilities.

Related to our adoption of ASU No. 2014-09, we elected to (i) apply the provisions of this new accounting guidance only to contracts that were not completed at the date of initial application and (ii) utilize a practical expedient whereby we reflected the aggregate effect of all contract modifications that occurred prior to January 1, 2018 (rather than retrospectively restating the affected contracts) when identifying our satisfied and unsatisfied performance obligations, determining the transaction prices with our customers, and allocating such transaction prices to our satisfied and unsatisfied performance obligations. These two elections had no financial impact.

Prior to January 1, 2018, the Company recognized revenue in accordance with then-existing U.S. GAAP and SEC Staff Accounting Bulletin No. 104, "Revenue Recognition" (“prior GAAP”). Under both ASU No. 2014-09 and prior GAAP, revenue can only be recognized when all of the required criteria are met. Although there were some minor changes to the Company’s revenue recognition policies and procedures effective January 1, 2018 with the adoption of ASU No. 2014-09, there were no material differences between the timing and amount of revenues recognized under ASU No. 2014-09 and prior GAAP. The accompanying Condensed Consolidated Statements of Operations present revenues net of any sales or value-added taxes that we collect from customers and remit to government authorities.

ASU No. 2014-09 requires that we assess at inception all of the promises in a customer contract to determine if a promise is a separate performance obligation. To identify our performance obligations, we consider all of the services promised in a customer contract, regardless of whether they are explicitly stated or are implied by customary business practices. If we conclude that a service is separately identifiable and distinct from the other offerings in a contract, we account for such a promise as a separate performance obligation.

If a customer contract has more than one performance obligation, then the total contract consideration is allocated among the separate deliverables based on their stand-alone selling prices, which are determined based on the prices at which the Company discretely sells the stand-alone services. If a contract includes a discount or other pricing concession, the transaction price is allocated among the performance obligations on a proportionate basis using the relative stand-alone selling prices of the individual deliverables being transferred to the customer, unless the discount or other pricing concession can be ascribed to specifically identifiable performance obligations.

The contracts with our customers delineate the final terms and conditions of the underlying arrangement, including product descriptions, subscription periods, deliverables, quantity and price of each service purchased. Since the transaction price of almost all of our customer contracts is typically agreed upon upfront and generally does not fluctuate during the duration of the contract, variable consideration is insignificant. The Company may engage in certain financing transactions with customers but these arrangements have been limited in number and not material.

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Required Disclosures under ASU No. 2014-09

ASU No. 2014-09 requires significantly expanded disclosures around the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. These additional disclosures are provided below:

Disaggregated Revenues

We believe that disaggregating the Company’s revenues by primary geographic location and the timing of when revenue is recognized achieves the disclosure objectives in ASU No. 2014-09. Our disaggregated revenue information by reportable segment is presented for the periods indicated in the tables below (in thousands).

Three Months Ended March 31, 2018

	Research		Events		Consulting		Talent Assessment & Other		Total
Primary Geographic Markets: (1)
United States and Canada	$	489,713	$	24,069	$	45,129	$	34,594	$	593,505
Europe, Middle East and Africa	184,547		16,891		29,938		28,290		259,666
Other International	89,664		5,127		7,829		7,774		110,394
Total revenues	$	763,924	$	46,087	$	82,896	$	70,658	$	963,565

Three Months Ended March 31, 2017

	Research		Events		Consulting		Talent Assessment & Other		Total
Primary Geographic Markets: (1)
United States and Canada	$	327,492	$	17,663	$	47,832	$	—	$	392,987
Europe, Middle East and Africa	115,802		14,095		23,823		—		153,720
Other International	68,012		3,511		6,939		—		78,462
Total revenues	$	511,306	$	35,269	$	78,594	$	—	$	625,169

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

Three Months Ended March 31, 2018

	Research		Events		Consulting		Talent Assessment & Other		Total
Timing of Revenue Recognition:
Transferred over time (1)	$	701,096	$	—	$	74,010	$	58,946	$	834,052
Transferred at a point in time (2)	62,828		46,087		8,886		11,712		129,513
Total revenues	$	763,924	$	46,087	$	82,896	$	70,658	$	963,565

Three Months Ended March 31, 2017

	Research		Events		Consulting		Talent Assessment & Other		Total
Timing of Revenue Recognition:
Transferred over time (1)	$	466,706	$	—	$	64,994	$	—	$	531,700
Transferred at a point in time (2)	44,600		35,269		13,600		—		93,469
Total revenues	$	511,306	$	35,269	$	78,594	$	—	$	625,169

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(1) These Research revenues were recognized in connection with performance obligations that were satisfied over time using a time-elapsed output method to measure progress. The corresponding Consulting revenues were recognized over time using labor hours as an input measurement basis. Talent Assessment & Other revenues in this category were recognized using either a time-elapsed output method, performance-based milestone approach or labor hours, depending on the nature of the underlying customer contract.

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

Determining a measure of progress for performance obligations that are satisfied over time and when control transfers for performance obligations that are satisfied at a point in time requires us to make judgments that affect the timing of when revenue is recognized. A key factor in this determination is when the customer is able to direct the use of, and can obtain substantially all of the benefits from, the deliverable.

For performance obligations recognized in accordance with a time-elapsed output method, the Company’s efforts are expended consistently throughout the contractual period and the Company transfers control evenly by providing stand-ready services. For performance obligations satisfied under our Consulting fixed fee and time and materials engagements, we believe that labor hours are the best measure of depicting the Company’s progress because labor output corresponds directly to the value of the Company’s performance to date as control is transferred. In our Talent Assessment & Other segment, we select a method to assess the completion of our performance obligations that best aligns with the specific characteristics of the individual customer contract. We believe that these methods to measure progress provide a reasonable and supportable determination as to when we transfer control over these services to our customers.

For customer contracts that are greater than one year in duration, the aggregate amount of the transaction price allocated to performance obligations that are unsatisfied (or partially unsatisfied) as of March 31, 2018 was approximately $2.1 billion. The Company expects to recognize $1,060.6 million, $856.7 million and $209.8 million of this revenue (most of which pertains to Research) during the remainder of 2018, the year ending December 31, 2019 and thereafter, respectively. The Company applies the practical expedient allowed in ASU No. 2014-09 and, accordingly, it does not disclose such performance obligation information for customer contracts that have original durations of one year or less.

Customer Contract Assets and Liabilities

The timing of the recognition of revenues, the amount and timing of our billings and cash collections, as well as upfront customer payments, result in the recording of both assets and liabilities on our Condensed Consolidated Balance Sheets.

The payment terms and conditions in our customer contracts vary. In some cases, customers prepay and, in other cases, after we conduct a credit evaluation, payment may be due in arrears. Because the timing of the delivery of our services typically differs from the timing of customer payments, the Company recognizes either a contract asset (we perform either fully or partially under the contract but a contingency remains) or a contract liability (upfront customer payments precede our performance, resulting in deferred revenue). Amounts recorded as contract assets are reclassified to fees receivable when all of the outstanding conditions have been resolved and our right to payment becomes unconditional. Contracts with payments due in arrears are also recognized as fees receivable. As our contractual performance obligations are satisfied over time or at a point in time, the Company correspondingly relieves its contract liabilities and records the associated revenue.

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The table below provides information regarding certain of the Company’s balance sheet accounts that pertain to its contracts with customers, to exclude our held-for-sale businesses (in thousands):

	March 31,		December 31,
	2018		2017
Assets:
Fees receivable, gross (1)	$	1,142,064	$	1,162,871
Contract assets (2)	$	27,593	$	26,672
Contract liabilities:
Deferred revenues (current liability) (3)	$	1,719,637	$	1,630,198
Non-current deferred revenues (3)	16,139		16,205
Total contract liabilities	$	1,735,776	$	1,646,403

(1) Fees receivable represent the unconditional right of payment from our customers and includes both billed and unbilled amounts.

(2) Contract assets represent recognized revenue for which we do not have an unconditional right to payment as of the balance sheet date because the project may be subject to a progress milestone or some other billing restriction. In the accompanying Condensed Consolidated Balance Sheets, contract assets are recorded in Prepaid expenses and other current assets as of March 31, 2018 and Fees receivable, net as of December 31, 2017.

(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 our performance obligation(s).

During the three months ended March 31, 2018, the Company recognized $605.5 million of revenue that was attributable to deferred revenues that were recorded at December 31, 2017. Such amount primarily consisted of (i) Research and Talent Assessment & Other revenue that was recognized ratably as control of the goods or services passed to the customer and (ii) Events revenue pertaining to symposia, conferences, summits or exhibitions that occurred during the calendar quarter. During the three months ended March 31, 2018, the Company recorded no material impairments related to its contract assets. The Company does not in the normal course of business recognize revenues from performance obligations satisfied in prior periods.

Allowance for Losses and Revenue Reserves

As of December 31, 2017, the Company maintained an allowance for losses that included a bad debt allowance and a revenue reserve. Provisions to the Company’s allowance for losses were charged against earnings as either a reduction in revenues or an increase in expense.

Effective with the adoption of ASU No. 2014-09 on January 1, 2018, the allowance for losses, which is classified as an offset to the gross amount of fees receivable, and the related charge against earnings (i.e., bad debt expense) is now comprised solely of estimated uncollectible fees receivable due to credit and other associated risks. The revenue reserve previously reported as part of the allowance for losses has been reclassified and is now reported as a liability in accordance with ASU No. 2014-09. The revenue reserve is maintained for amounts deemed to be uncollectible for reasons other than bad debt. The amount of the revenue reserve is based on past experience and current estimates. As of March 31, 2018, the revenue reserve balance was $6.9 million and adjustments to the account during the three months ended March 31, 2018 were not significant.

The determination of the allowance for losses is based on historical loss experience, an assessment of current economic conditions, the aging of outstanding receivables, the financial health of specific clients and probable losses. This evaluation is inherently judgmental and requires the use of estimates. The allowance for losses is periodically re-evaluated and adjusted as more information about the ultimate collectability of fees receivable becomes available. Circumstances that could cause the allowance for losses to increase include changes in our clients’ liquidity and credit quality, other factors negatively impacting our clients’ ability to pay their obligations as they come due, and the effectiveness of our collection efforts.

Costs of obtaining and fulfilling a customer contract

Upon the signing of a customer contract, the Company capitalizes the related commission as a recoverable direct incremental cost of obtaining the underlying contract and records a corresponding commission payable. No other amounts are capitalized as a cost

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of obtaining or fulfilling a customer contract because no expenditures have been identified that meet the requisite capitalization criteria. For Research, Consulting and Talent Assessment & Other, we generally use the straight-line method of amortization for deferred commissions over a period that is based on the projected recoverability for such costs, using factors such as the underlying contract period, the timing of when the corresponding revenues will be earned, and the anticipated term of the engagement. For Events, deferred commissions are expensed during the period when the related event occurs.

Under all circumstances, deferred commissions are amortized over a period that does not exceed one year. During the three months ended March 31, 2018 and 2017, such amortization expense was $75.9 million and $50.2 million, respectively, and was included in Selling, general and administrative expense in the accompanying Condensed Consolidated Statements of Operations. The Company recorded no material impairments of its deferred commissions during either the three months ended March 31, 2018 or 2017.

Accounting standards issued but not yet adopted. The FASB has issued accounting standards that have not yet become effective and may impact the Company’s consolidated financial statements or related disclosures in future periods. These standards and their potential impact are discussed below:

Accounting standards effective in 2019

Certain Tax Effects Stranded In Accumulated Other Comprehensive Income — In February 2018, the FASB issued ASU No. 2018-02, "Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income" ("ASU No. 2018-02"). ASU No. 2018-02 provides an entity with the option to reclassify to retained earnings the tax effects from items that have been stranded in accumulated other comprehensive income as a result of the Tax Cuts and Jobs Act of 2017 (the “Act”). Upon adoption, ASU No. 2018-02 requires an entity to make new disclosures, including whether or not the entity elected to reclassify the tax effects related to the Act and the entity’s accounting policy for releasing the income tax effects from accumulated other comprehensive income for all other items (i.e., those not pertaining to the Act). Entities may adopt ASU No. 2018-02 using one of two transition methods: (i) retrospective to each period wherein the income tax effects of the Act related to items remaining in accumulated other comprehensive income are recognized or (ii) at the beginning of the period of adoption. ASU No. 2018-02 is effective for Gartner on January 1, 2019; however, early adoption is permitted. We are currently evaluating the potential impact of ASU No. 2018-02 on the Company's consolidated financial statements but no material impact is expected at adoption.

Targeted Improvements to Accounting for Hedging Activities - In August 2017, the FASB issued ASU No. 2017-12, "Derivatives and Hedging ("ASU No. 2017-12"). ASU No. 2017-12 is intended to improve the financial reporting of hedging relationships to better portray economic results of an entity’s risk management activities in its financial statements. In addition to that main objective, the standard makes certain targeted improvements to simplify the application of the hedge accounting guidance in current U.S. GAAP. ASU No. 2017-12 is effective for Gartner on January 1, 2019. We are currently evaluating the impact of ASU No. 2017-12 on the Company's consolidated financial statements.

Distinguishing Liabilities from Equity — In July 2017, the FASB issued ASU No. 2017-11, "Earnings Per Share, Distinguishing Liabilities from Equity, and Derivatives and Hedging" ("ASU No. 2017-11"). ASU No. 2017-11 is intended to simplify the accounting for financial instruments with characteristics of liabilities and equity. Among the issues addressed are: (i) determining whether an instrument (or embedded feature) is indexed to an entity’s own stock; (ii) distinguishing liabilities from equity for mandatorily redeemable financial instruments of certain nonpublic entities; and (iii) identifying mandatorily redeemable non-controlling interests. ASU No. 2017-11 is effective for Gartner on January 1, 2019. We are currently evaluating the potential impact of ASU No. 2017-11 on the Company's consolidated financial statements.

Leases — In February 2016, the FASB issued ASU No. 2016-02, "Leases" ("ASU No. 2016-02"), which will require significant changes in the accounting and disclosure for lease arrangements. Under current U.S. GAAP, lease arrangements that meet certain criteria are considered operating leases and are not recorded on an entity's balance sheet. Because all of our existing lease arrangements are accounted for as operating leases, they are not recorded on the Company's balance sheet. ASU No. 2016-02 will significantly change the accounting for leases because a right-of-use ("ROU") model will be used wherein a lessee must record an ROU asset and a lease liability on its balance sheet for leases with initial terms longer than 12 months. Under ASU No. 2016-02, leases will be classified as either finance or operating arrangements, with such classification affecting the pattern of expense recognition in an entity's income statement. ASU No. 2016-02 also requires expanded disclosures about leasing arrangements. ASU No. 2016-02 will be effective for Gartner on January 1, 2019. We are currently evaluating the potential impact of ASU No. 2016-02 on our consolidated financial statements.

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Accounting standards effective in 2020

Goodwill Impairment — In January 2017, the FASB issued ASU No. 2017-04, "Intangibles—Goodwill and Other - Simplifying the Test for Goodwill Impairment" ("ASU No. 2017-04"). ASU No. 2017-04 simplifies the determination of the amount of goodwill to be potentially charged off by eliminating Step 2 of the goodwill impairment test under current U.S. GAAP. ASU No. 2017-04 is effective for Gartner on January 1, 2020. The adoption of ASU No. 2017-04 is currently not expected to have a material impact on the Company's consolidated financial statements.

Financial Instrument Credit Losses — In June 2016, the FASB issued ASU No. 2016-13, "Financial Instruments—Credit Losses" ("ASU No. 2016-13"). ASU No. 2016-13 amends the current financial instrument impairment model by requiring entities to use a forward-looking approach based on expected losses to estimate credit losses on certain types of financial instruments, including trade receivables. ASU No. 2016-13 is effective for Gartner on January 1, 2020, with early adoption permitted. We are currently evaluating the potential impact of ASU No. 2016-13 on our consolidated financial statements.

The FASB continues to work on a number of other significant accounting standards which, if issued, could materially impact the Company's accounting policies and disclosures in future periods. As these standards have not yet been issued, the effective dates and potential impact are unknown.

Note 2 — Acquisitions and Divestitures

Acquisitions

The Company accounts for business acquisitions in accordance with the acquisition method of accounting as prescribed by FASB ASC Topic 805, Business Combinations. The acquisition method of accounting requires the Company to record the net assets and liabilities acquired based on their estimated fair values as of the acquisition date, with any excess of the consideration transferred over the estimated fair value of the net assets acquired, including identifiable intangible assets, to be recorded to goodwill. Under the acquisition method, the operating results of acquired companies are included in the Company's consolidated financial statements beginning on the date of acquisition. The Company did not have any business acquisitions in the first quarter of 2018. In the first quarter of 2017, the Company acquired L2, Inc. ("L2"), a subscription-based research business that benchmarks the digital performance of brands. During the three months ended March 31, 2018, the Company finalized its acquisition accounting for L2 and CEB Inc. ("CEB"), which was acquired on April 5, 2017. There were no material measurement period adjustments recorded during the 2018 quarterly period.

The Company recognized $59.3 million of acquisition and integration charges in 2018 compared to $13.3 million in 2017. The additional charges during 2018 consisted of higher professional fees, severance, stock-based compensation charges, and accruals for exit costs for certain office space that the Company does not intend to occupy in Arlington, Virginia that were related to our acquisition of CEB. The following table presents a summary of the activity related to our accrual for exit costs at all of our facilities for the quarter ended March 31, 2018 (in thousands):

Liability balance at December 31, 2017	$	12,961
Charges and adjustments, net	44,230
Payments	(4,734		)
Liability balance at March 31, 2018 (1)	$	52,457

(1) In total, we estimate that we will make net cash payments of approximately $61.2 million for exit costs in connection with the activities described herein. Through March 31, 2018, in the aggregate, we have expensed $57.3 million and paid $4.9 million related to such activities.

Divestitures

CEB Talent Assessment business

On April 3, 2018, the Company sold its CEB Talent Assessment business in all cash transaction for a purchase price of $400.0 million. The purchase price is subject to customary adjustments and other deal-related expenses. The CEB Talent Assessment business was acquired by Gartner as part of the CEB acquisition in April 2017 and was a significant portion of the Company's Talent Assessment & Other segment. During the first quarter of 2018, the CEB Talent Assessment business contributed approximately $47.0 million of revenue and recognized pre-tax income of approximately $2.1 million.

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CEB Workforce Survey & Analytics business

On April 30, 2018, the Company sold its CEB Workforce Survey and Analytics ("WS&A") business in an all cash transaction for a purchase price of $29.0 million. The purchase price is subject to customary adjustments and other deal-related expenses. The WS&A business was also acquired by Gartner as part of the CEB acquisition in April 2017 and was reported with the Talent Assessment & Other segment.

The Company has classified the related assets and liabilities of these businesses as held-for-sale in its Consolidated Balance Sheets.

The principal components of the held-for-sale assets and liabilities for these businesses are summarized in the table below (in thousands):

	March 31, 2018 (1)		December 31, 2017 (1)
Cash and cash equivalents	$	19,508	$	10,000
Fees receivable, net	49,191		50,928
Goodwill	246,661		212,994
Intangible assets, net	264,145		250,472
Other assets (2)	23,849		18,571
Total assets held-for-sale	$	603,354	$	542,965
Accounts payable and accrued liabilities	$	26,467	$	32,388
Deferred revenues	65,846		61,450
Other liabilities	51,644		52,007
Total liabilities held-for-sale	$	143,957	$	145,845

(1) March 31, 2018 includes both the CEB Talent Assessment business and the WS&A business. December 31, 2017 includes the CEB Talent Assessment business only.

(2) Other assets includes property, equipment and leasehold improvements, net.

Note 3 — Computation of Net (Loss) Income per Share

Basic earnings per share (“EPS”) is computed by dividing net (loss) income by the weighted average number of shares of Common Stock outstanding for the period. Diluted EPS reflects the potential dilution of securities that could share in earnings. When the impact of common share equivalents is anti-dilutive, they are excluded from the calculation.

The following table sets forth the calculation of basic and diluted (loss) income per share (in thousands, except per share data):

	Three Months Ended
	March 31,
	2018			2017
Numerator:
Net (loss) income used for calculating basic and diluted (loss) income per common share	$	(19,587	)	$	36,433
Denominator:
Weighted average common shares used in the calculation of basic (loss) income per share	91,005			82,835
Common stock equivalents associated with stock-based compensation plans (1), (2)	—			1,260
Shares used in the calculation of diluted (loss) income per share	91,005			84,095
Basic (loss) income per share	$	(0.22	)	$	0.44
Diluted (loss) income per share	$	(0.22	)	$	0.43

(1) For the three months ended March 31, 2017, certain common stock equivalents were not included in the computation of diluted income per share because the effect would have been anti-dilutive. These common share equivalents totaled less than 0.4 million for the 2017 period presented.

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(2) For the three months ended March 31, 2018, approximately 1.3 million common stock equivalents were completely excluded from the calculation of diluted (loss) per share because they were anti-dilutive.

Note 4 — 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 March 31, 2018, the Company had 4.9 million shares of its common stock, par value $.0005 per share, (the “Common Stock”) available for stock-based compensation awards under its 2014 Long-Term Incentive Plan.

The Company accounts for stock-based compensation awards in accordance with FASB ASC Topics 505 and 718 and SEC Staff Accounting Bulletins No. 107 and No. 110. Stock-based compensation expense is based on the fair value of the award on the date of grant. The Company recognizes stock-based compensation expense over the period that the related service is performed, which is generally the same as the vesting period of the underlying award. Currently, the Company issues treasury shares upon the exercise, release or settlement of stock-based compensation awards.

Determining the appropriate fair value model and calculating the fair value of stock-based compensation awards requires the use of certain subjective assumptions, including the expected life of a stock-based compensation award and Common Stock price volatility. In addition, determining the appropriate periodic stock-based compensation expense requires management to estimate the likelihood of the achievement of certain performance targets. The assumptions used in calculating the fair values of stock-based compensation awards and the related periodic expense represent management’s best estimates, which involve inherent uncertainties and the application of judgment. As a result, if circumstances change and the Company deems it necessary in the future to modify the assumptions it made or to use different assumptions, or if the quantity and nature of the Company’s stock-based compensation awards changes, then the amount of expense may need to be adjusted and future stock-based compensation expense could be materially different from what has been recorded in the current period.

Stock-Based Compensation Expense

The Company recognized the following stock-based compensation expense by award type and expense category line item during the periods indicated (in millions):

	Three Months Ended
	March 31,
Award type	2018		2017
Stock appreciation rights	$	3.5	$	2.8
Restricted stock units	27.2		19.6
Common stock equivalents	0.2		0.2
Total (1)	$	30.9	$	22.6

	Three Months Ended
	March 31,
Expense category line item	2018		2017
Cost of services and product development	$	11.4	$	9.3
Selling, general and administrative	18.2		13.3
Acquisition and integration charges (2)	1.3		—
Total (1)	$	30.9	$	22.6

(1) Includes charges of $17.8 million and $14.5 million during the three months ended March 31, 2018 and 2017, respectively, for awards to retirement-eligible employees. Those awards vest on an accelerated basis.

(2) These charges are primarily the result of the acceleration of the vesting of certain restricted stock units related to the CEB acquisition.

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As of March 31, 2018, the Company had $125.8 million of total unrecognized stock-based compensation cost, which is expected to be expensed over the remaining weighted average service period of approximately 2.9 years.

Stock-Based Compensation Awards

The disclosures presented below provide information regarding the Company’s stock-based compensation awards, all of which have been classified as equity awards in accordance with FASB ASC Topic 505.

Stock Appreciation Rights

Stock-settled stock appreciation rights ("SARs") permit the holder to participate in the appreciation of the value of the Common Stock. After the applicable vesting criteria have been satisfied, SARs are settled in shares of Common Stock upon exercise by the employee. SARs vest ratably over a four-year service period and expire seven years from the date of grant. The fair value of a SARs award is recognized as compensation expense on a straight-line basis over four years. SARs have only been awarded to the Company’s executive officers.

When SARs are exercised, the number of shares of Common Stock issued is calculated as follows: (1) the total proceeds from the exercise of the SARs award (calculated as the closing price of the Common Stock as reported on the New York Stock Exchange on the date of exercise less the exercise price of the SARs award, multiplied by the number of SARs exercised) is divided by (2) the closing price of the Common Stock on the date of exercise. The Company withholds a portion of the shares of the Common Stock issued upon exercise to satisfy statutory tax withholding requirements. SARs recipients do not have any stockholder rights until the shares of Common Stock are issued in respect of the award, which is subject to the prior satisfaction of the vesting and other criteria relating to such grants.

The following table summarizes changes in SARs outstanding during the three months ended March 31, 2018:

	Stock Appreciation Rights ("SARs") (in millions)	Per Share Weighted Average Exercise Price		Per Share Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Term (Years)
Outstanding at December 31, 2017	1.2	$	76.73	$	17.35	4.28
Granted	0.3	114.26		25.63		6.86
Outstanding at March 31, 2018 (1) (2)	1.5	85.06		19.15		4.70
Vested and exercisable at March 31, 2018 (2)	0.8	$	70.96	$	16.39	3.56

(1) As of March 31, 2018, 0.7 million of the total SARs outstanding were unvested. The Company expects that substantially all of those unvested awards will vest in future periods.

(2) As of March 31, 2018, the total SARs outstanding had an intrinsic value of $47.6 million. On such date, SARs vested and exercisable had an intrinsic value of $35.1 million.

The fair value of a SARs award is determined on the date of grant using the Black-Scholes-Merton valuation model with the following weighted average assumptions:

	Three Months Ended
	March 31,
	2018		2017
Expected dividend yield (1)	—	%	—	%
Expected stock price volatility (2)	21	%	22	%
Risk-free interest rate (3)	2.5	%	1.8	%
Expected life in years (4)	4.5		4.5

(1) The expected dividend yield assumption was based on both the Company's historical and anticipated dividend payouts. Historically, the Company has not paid cash dividends on its Common Stock.

(2) The determination of expected stock price volatility was based on both historical Common Stock prices and implied volatility from publicly traded options in the Common Stock.

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(3) The risk-free interest rate was based on the yield of a U.S. Treasury security with a maturity similar to the expected life of the award.

(4) The expected life represents the Company’s estimate of the weighted average period of time the SARs are expected to be outstanding (that is, the period between the service inception date and the expected exercise date).

Restricted Stock Units

Restricted stock units ("RSUs") give the awardee the right to receive shares of Common Stock when the vesting conditions are met and certain restrictions lapse. Each RSU that vests entitles the awardee to one share of Common Stock. RSU awardees do not have any of the rights of a Gartner stockholder, including voting rights and the right to receive dividends and distributions, until the shares are released. The fair value of an RSU award is determined on the date of grant based on the closing price of the Common Stock as reported on the New York Stock Exchange on that date. Service-based RSUs vest ratably over four years and are expensed on a straight-line basis over the vesting period. Performance-based RSUs are subject to the satisfaction of both performance and service conditions, vest ratably over four years and are expensed on an accelerated basis over the vesting period.

The following table summarizes the changes in RSUs outstanding during the three months ended March 31, 2018:

	Restricted Stock Units ("RSUs") (in millions)		Per Share Weighted Average Grant Date Fair Value
Outstanding at December 31, 2017	1.5		$	91.47
Granted (1)	0.7		114.33
Vested and released	(0.6	)	86.21
Outstanding at March 31, 2018 (2) (3)	1.6		$	101.52

(1) The 0.7 million of RSUs granted during the three months ended March 31, 2018 consisted of 0.3 million of performance-based RSUs awarded to executives and 0.4 million of service-based RSUs awarded to non-executive employees. The performance-based awards include RSUs in final settlement of 2017 grants and approximately 0.2 million of RSUs representing the target amount of the grant for the year ending December 31, 2018 that is tied to an increase in Gartner's total contract value for 2018. Total contract value for this determination represents the value attributable to all of Gartner's subscription-related revenue contracts. The number of performance-based RSUs that will ultimately be awarded for 2018 ranges from 0% to 200% of the target amount and will be finalized based on the actual increase in Gartner's total contract value for 2018 as measured on December 31, 2018. If the specified minimum level of achievement is not met, the performance-based RSUs pertaining to 2018 will be forfeited in their entirety and any previously recorded compensation expense will be reversed.

(2) The Company expects that substantially all of the RSUs outstanding will vest in future periods.

(3) As of March 31, 2018, the weighted average remaining contractual term of the RSUs outstanding was approximately 1.8 years.

Common Stock Equivalents

Common stock equivalents ("CSEs") are convertible into Common Stock. Each CSE entitles the holder to one share of Common Stock. Members of our Board of Directors receive their directors’ fees in CSEs unless they opt to receive up to 50% of those fees in cash. Generally, CSEs have no defined term and are converted into shares of Common Stock when service as a director terminates unless the director has elected an accelerated release. The fair value of a CSE award is determined on the date of grant based on the closing price of the Common Stock as reported on the New York Stock Exchange on that date. CSEs vest immediately and, as a result, they are recorded as expense on the date of grant.

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The following table summarizes the changes in CSEs outstanding during the three months ended March 31, 2018:

	Common Stock Equivalents ("CSEs")		Per Share Weighted Average Grant Date Fair Value
Outstanding at December 31, 2017	110,013		$	23.19
Granted	1,624		116.06
Converted to shares of Common Stock upon grant	(998	)	124.94
Outstanding at March 31, 2018	110,639		$	23.59

Employee Stock Purchase Plan

The Company has an employee stock purchase plan (the “ESP Plan”) under which eligible employees are permitted to purchase shares of Common Stock through payroll deductions, which may not exceed 10% of an employee’s compensation, or $23,750 in any calendar year, at a price equal to 95% of the closing price of the Common Stock as reported on the New York Stock Exchange at the end of each offering period. As of March 31, 2018, the Company had 0.8 million shares available for purchase under the ESP Plan. The ESP Plan is considered non-compensatory under FASB ASC Topic 718 and, as a result, the Company does not record stock-based compensation expense for employee share purchases. The Company received $4.1 million and $3.0 million in cash from employee share purchases under the ESP Plan during the three months ended March 31, 2018 and 2017, respectively.

Note 5 — Segment Information

Our products and services are delivered through four segments – Research, Events, Consulting and Talent Assessment & Other, as follows:

• Research provides trusted, objective insights and advice on the mission-critical priorities of leaders across all functional areas of the enterprise through research and other reports, briefings, proprietary tools, access to our analysts, peer networking services and membership programs that enable our clients to make better decisions. Gartner's traditional strengths in IT, marketing and supply chain research were enhanced in 2017 with Gartner's acquisition of CEB, Inc., which added CEB's best practice and talent management research insights across a range of business functions, to include human resources, finance, sales and legal.

• Events provides business professionals across the organization the opportunity to learn, share and network. From our flagship CIO event Gartner Symposium/ITxpo, to industry-leading conferences focused on specific business roles and topics, to member-driven sessions, our events enable attendees to experience the best of Gartner insight and advice live.

• Consulting provides customized solutions to unique client needs through on-site, day-to-day support, as well as proprietary tools for measuring and improving IT performance with a focus on cost, performance, efficiency and quality.

• Talent Assessment & Other helps organizations assess, engage, manage and improve talent. This is accomplished through knowledge and skills assessments, training programs, workshops, and survey and questionnaire services.

The Company evaluates segment performance and allocates resources based on gross contribution margin. Gross contribution, as presented in the table 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, and Acquisition and integration charges. 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 in the allocation of resources.

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The following tables present operating information about the Company’s reportable segments for the periods indicated (in thousands):

Three Months Ended March 31, 2018	Research		Events		Consulting		Talent Assessment & Other (1)		Consolidated
Revenues	$	763,924	$	46,087	$	82,896	$	70,658	$	963,565
Gross contribution	531,456		16,190		24,124		43,044		614,814
Corporate and other expenses									(623,525		)
Operating loss									$	(8,711	)

Three Months Ended March 31, 2017	Research		Events		Consulting		Talent Assessment & Other		Consolidated
Revenues (2)	$	511,306	$	35,269	$	78,594	$	—	$	625,169
Gross contribution (2)	351,113		13,567		23,937		—		388,617
Corporate and other expenses									(335,103		)
Operating income									$	53,514

(1) In April 2018, the Company sold its CEB Talent Assessment and CEB Workforce Survey and Analytics businesses. These two businesses were acquired in April 2017 with the CEB acquisition. The results of these businesses are included in the Talent Assessment & Other segment results for the three months ended March 31, 2018. Additional information regarding these divestitures is included in Note 2 — Acquisitions and Divestitures.

(2) In 2017, the Company began reporting the results of its Strategic Advisory Services ("SAS") business in Research whereas previously the SAS business was reported with Consulting. As a result, revenues of $6.7 million pertaining to the three months ended March 31, 2017 were reclassified from Consulting to Research to be comparable with the current year presentation. Gross contribution of $4.4 million for the three months ended March 31, 2017 was also reclassified from Consulting to Research.

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

	Three Months Ended
	March 31,
	2018			2017
Total segment gross contribution	$	614,814		$	388,617
Costs and expenses:
Cost of services and product development - unallocated (1)	8,458			1,057
Selling, general and administrative	487,745			304,244
Depreciation and amortization	68,056			16,530
Acquisition and integration charges	59,266			13,272
Operating (loss) income	(8,711		)	53,514
Interest expense and other, net	34,160			5,017
(Benefit) provision for income taxes	(23,284		)	12,064
Net (loss) income	$	(19,587	)	$	36,433

(1) The unallocated amounts consist of certain bonus and related fringe costs recorded in consolidated Cost of services and product development expense that are not allocated to segment expense. The Company's policy is to only allocate bonus and related fringe charges to segments for up to 100% of the segment employee's target bonus. Amounts above 100% are absorbed by corporate.

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Note 6 — 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. The annual assessment of the recoverability of recorded goodwill can be based on either a qualitative or quantitative assessment or a combination of the two approaches. Both methods utilize estimates which, in turn, require judgments and assumptions regarding future trends and events. As a result, both the precision and reliability of the resulting estimates are subject to uncertainty. If our annual goodwill impairment evaluation determines that the fair value of a reporting unit is less than its related carrying amount, we may recognize an impairment charge. In connection with our most recent annual impairment test of goodwill during the quarter ended September 30, 2017, which indicated no impairment of recorded goodwill, the Company utilized the qualitative approach in assessing the fair values of its reporting units relative to their respective carrying values.

The following table presents changes to the carrying amount of goodwill by segment during the three months ended March 31, 2018 (in thousands):

	Research			Events			Consulting		Talent Assessment & Other			Total
Balance at December 31, 2017 (1), (2)	$	2,619,677		$	187,920		$	97,798	$	81,899		$	2,987,294
Reclassified as held-for-sale (3)	—			—			—		(20,547		)	(20,547		)
Foreign currency translation impact and other (4)	(17,958		)	(170		)	528		7,495			(10,105		)
Balance at March 31, 2018	$	2,601,719		$	187,750		$	98,326	$	68,847		$	2,956,642

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

(2) Excludes certain amounts related to held-for-sale operations.

(3) Represents amounts reclassified as held-for-sale assets related to the CEB Talent Assessment and WS&A businesses. See Note 2 — Acquisitions and Divestitures for additional information.

(4) Includes the foreign currency translation impact and certain measurement period adjustments related to the acquisition of CEB in April 2017.

Finite-Lived Intangible Assets

The following tables present reconciliations of the carrying amounts of the Company's finite-lived intangible assets as of the dates indicated (in thousands):

March 31, 2018	Customer Relationships			Software			Content			Other			Total
Gross cost at December 31, 2017 (1)	$	1,200,316		$	123,424		$	104,313		$	54,929		$	1,482,982
Write-off of fully amortized intangible assets	—			—			(228		)	—			(228		)
Reclassified as held-for-sale (2)	(7,170		)	(321		)	(241		)	(39		)	(7,771		)
Foreign currency translation impact	15,218			491			251			(171		)	15,789
Gross cost	1,208,364			123,594			104,095			54,719			1,490,772
Accumulated amortization (3)	(119,075		)	(32,410		)	(63,778		)	(27,738		)	(243,001		)
Balance at March 31, 2018 (1)	$	1,089,289		$	91,184		$	40,317		$	26,981		$	1,247,771

December 31, 2017	Customer Relationships			Software			Content			Other			Total
Gross cost (1)	$	1,200,316		$	123,424		$	104,313		$	54,929		$	1,482,982
Accumulated amortization (3)	(92,983		)	(26,344		)	(47,475		)	(24,158		)	(190,960		)
Balance at December 31, 2017 (1)	$	1,107,333		$	97,080		$	56,838		$	30,771		$	1,292,022

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(1) Excludes amounts related to held-for-sale operations.

(2) Represents amounts reclassified (net) as held-for-sale assets related to the WS&A business. See Note 2 — Acquisitions and Divestitures for additional information.

(3) Finite-lived intangible assets are amortized using the straight-line method over the following periods: Customer relationships—4 to 13 years; Software—3 to 7 years; Content—1.5 to 5 years; and Other—2 to 5 years.

Amortization expense related to finite-lived intangible assets was $51.6 million and $6.3 million during the three months ended March 31, 2018 and 2017, respectively. The estimated future amortization expense by year for finite-lived intangible assets is as follows (in thousands):

2018 (remaining nine months)	$	138,953
2019	135,868
2020	129,461
2021	108,979
2022	99,363
Thereafter	635,147
	$	1,247,771

Note 7 — Debt

2016 Credit Agreement

The Company has a credit facility that provides for a $1.5 billion Term loan A facility, a $500.0 million Term loan B facility, and a $1.2 billion revolving credit facility (the "2016 Credit Agreement"). The 2016 Credit Agreement contains certain customary restrictive loan covenants, including, among others, financial covenants that apply a maximum leverage ratio and a minimum interest expense coverage ratio, and covenants limiting Gartner’s ability to incur indebtedness, grant liens, make acquisitions, merge, dispose of assets, pay dividends, repurchase stock, make investments and enter into certain transactions with affiliates. The Company was in full compliance with the covenants as of March 31, 2018.

The Term loan A facility is being repaid in 16 consecutive quarterly installments that commenced on June 30, 2017, plus a final payment to be made on March 20, 2022. The revolving credit facility may be borrowed, repaid, and re-borrowed through March 20, 2022, at which time all amounts must be repaid. Amounts borrowed under the Term loan A facility and the revolving credit facility bear interest at a rate equal to, at the Company's option, either:

(i) the greatest of: (x) the Administrative Agent’s prime rate; (y) the average rate on Federal Reserve Board of New York rate plus 1/2 of 1%; and (z) the eurodollar rate (adjusted for statutory reserves) plus 1%, in each case plus a margin equal to between 0.125% and 1.50% depending on Gartner’s consolidated leverage ratio as of the end of the four consecutive fiscal quarters most recently ended; or

(ii) the eurodollar rate (adjusted for statutory reserves) plus a margin equal to between 1.125% and 2.50%, depending on Gartner’s leverage ratio as of the end of the four consecutive fiscal quarters most recently ended.

The Term loan B facility will mature on April 5, 2024 and amounts outstanding thereunder will bear interest at a rate per annum equal to, at the option of Gartner, (i) adjusted LIBOR plus 2.00% or (ii) an alternate base rate plus 1.00%. The Term loan B facility is being repaid in 28 consecutive quarterly installments that commenced on June 30, 2017, plus a final payment to be made on April 5, 2024.

Senior Notes

The Company has $800.0 million aggregate principal amount of 5.125% Senior Notes due 2025 (the “Senior Notes”). The Senior Notes were issued at an issue price of 100.00% and bear interest at a fixed rate of 5.125% per annum. Interest on the Senior Notes is payable on April 1 and October 1 of each year. The Senior Notes will mature on April 1, 2025.

The Company may redeem some or all of the Senior Notes at any time on or after April 1, 2020 for cash at the redemption prices set forth in the Note Indenture, plus accrued and unpaid interest to, but not including, the redemption date. Prior to April 1, 2020,

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the Company may redeem up to 40% of the aggregate principal amount of the Senior Notes with the proceeds of certain equity offerings at a redemption price of 105.125% plus accrued and unpaid interest to, but not including, the redemption date. In addition, the Company may redeem some or all of the Senior Notes prior to April 1, 2020, at a redemption price of 100% of the principal amount of the Senior Notes plus accrued and unpaid interest to, but not including, the redemption date, plus a “make-whole” premium. If the Company experiences specific kinds of change of control, it will be required to offer to purchase the Senior Notes at a price equal to 101% of the principal amount thereof plus accrued and unpaid interest.

Outstanding Borrowings

The following table summarizes the Company’s total outstanding borrowings as of the dates indicated (in thousands):

	March 31,			December 31,
Description:	2018			2017
2016 Credit Agreement - Term loan A facility (1)	$	1,410,750		$	1,429,312
2016 Credit Agreement - Term loan B facility (1)	495,000			496,250
2016 Credit Agreement - Revolving credit facility (1), (2)	310,000			595,000
Senior Notes (3)	800,000			800,000
Other (4)	2,385			2,500
Principal amount outstanding (5)	$	3,018,135		$	3,323,062
Less: deferred financing fees (6)	(42,350		)	(44,217		)
Net balance sheet carrying amount (7)	$	2,975,785		$	3,278,845

(1) The contractual annualized interest rate as of March 31, 2018 on the Term loan A and B facilities was 3.88%, which consisted of a floating eurodollar base rate of 1.88% plus a margin of 2.00%. The contractual annualized interest rate on the revolving credit facility was 4.38%, which consisted of a floating eurodollar base rate of 1.88% plus a margin of 2.50%. However, the Company has interest rate swap contracts which effectively convert the floating eurodollar base rates on a portion of the amounts outstanding to a fixed base rate.

(2) The Company had $866.0 million of available borrowing capacity on the revolver (not including the expansion feature) as of March 31, 2018.

(3) Consists of $800.0 million principal amount of Senior Notes outstanding. The Senior Notes pay a fixed rate of 5.125% and mature on April 1, 2025.

(4) Consists of a $2.5 million State of Connecticut economic development loan with a 3.00% fixed rate of interest. The loan was originated in 2012 and has a 10 year maturity. Principal payments are deferred for the first five years and the loan may be repaid at any time by the Company without penalty.

(5) The average annual effective rate on the Company's total debt outstanding for the three months ended March 31, 2018, including the effect of its interest rate swaps discussed below, was 4.14%.

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

(7) On April 30, 2018, the Company repaid $400.0 million of the Term loan B facility and $50.0 million of the revolving credit facility.

Interest Rate Swaps

The Company has fixed-for-floating interest rate swap contracts which it designates as accounting hedges of the forecasted interest payments on the Company’s variable rate borrowings. The Company pays base fixed rates on the swaps and in return receives a floating eurodollar base rate on 30 day notional borrowings. The Company accounts for the interest rate swaps as cash flow hedges in accordance with FASB ASC Topic 815. Since the swaps hedge forecasted interest payments, changes in the fair value of the swaps are recorded in accumulated other comprehensive income (loss), a component of equity, as long as the swaps continue to be highly effective hedges of the designated interest rate risk. Any ineffective portion of change in the fair value of the hedges is recorded in earnings. All of the Company's swaps were highly effective hedges of the forecasted interest payments as of March 31, 2018. The interest rate swaps had a total positive fair value (asset) to the Company of $17.3 million at March 31, 2018, which is deferred and recorded in Accumulated other comprehensive income, net of tax effect.

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Note 8 — Equity

Share Repurchase Authorization

The Company has a $1.2 billion board approved authorization to repurchase the Company's common stock, of which $1.1 billion remained available as of March 31, 2018. The Company may repurchase its common stock from time to time in amounts and at prices 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, private transactions or other transactions and will be funded from cash on hand and borrowings under the Company’s credit arrangement.

The Company’s recent share repurchase activity is presented in the following table:

	Three Months Ended
	March 31,
	2018		2017
Number of shares repurchased (1), (2)	239,268		218,752
Cash paid for repurchased shares (in thousands)	$	28,394	$	21,978

(1) The average purchase price for repurchased shares was $118.73 and $100.47 for the three months ended March 31, 2018 and 2017, respectively.

(2) All of the shares repurchased in both quarterly periods related to the settlement of the Company's share-based compensation awards.

Accumulated Other Comprehensive Income (Loss), net ("AOCI/L")

The following tables disclose information about changes in AOCI/L by component and the related amounts reclassified out of AOCI/L to income during the periods indicated (net of tax, in thousands) (1):

For the three months ended March 31, 2018:

	Interest Rate Swaps		Defined Benefit Pension Plans			Foreign Currency Translation Adjustments		Total
Balance – December 31, 2017	$	2,483	$	(5,861	)	$	4,886	$	1,508
Changes during the period:
Change in AOCI/L before reclassifications to income	9,365		—			20,547		29,912
Reclassifications from AOCI/L to income during the period (2), (3)	749		56			—		805
Other comprehensive income for the period	10,114		56			20,547		30,717
Balance – March 31, 2018	$	12,597	$	(5,805	)	$	25,433	$	32,225

For the three months ended March 31, 2017:

	Interest Rate Swaps			Defined Benefit Pension Plans			Foreign Currency Translation Adjustments			Total
Balance – December 31, 2016	$	(1,409	)	$	(5,797	)	$	(42,477	)	$	(49,683	)
Changes during the period:
Change in AOCI/L before reclassifications to income	(3,393		)	—			4,371			978
Reclassifications from AOCI/L to income during the period (2), (3)	825			48			—			873
Other comprehensive income (loss) for the period	(2,568		)	48			4,371			1,851
Balance – March 31, 2017	$	(3,977	)	$	(5,749	)	$	(38,106	)	$	(47,832	)

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

(2) The reclassifications related to interest rate swaps (cash flow hedges) were recorded in Interest expense, net of tax effect. See Note 10 – Derivatives and Hedging for information regarding the hedges.

(3) The reclassifications related to defined benefit pension plans were recorded in Selling, general and administrative expense, net of tax effect. See Note 12 – Employee Benefits for information regarding the Company’s defined benefit pension plans.

Note 9 — Income Taxes

The provision for income taxes for the three months ended March 31, 2018 was a benefit of $(23.3) million on a pretax loss of $(42.9) million compared to an expense of $12.1 million on pretax income of $48.5 million in the three months ended March 31, 2017. The effective income tax rate was 54.3% for the three months ended March 31, 2018 and 24.9% for the same period in 2017.

The quarter-over-quarter change in the effective income tax rate was primarily attributable to the relative impact of stock-based compensation benefits quarter-over-quarter. The tax benefits from stock-based compensation during the first quarter of 2018 increased the tax rate on pretax losses while such benefits in the first quarter of 2017 decreased the tax rate on pretax income. In addition to the impact of stock-based compensation, the change in the effective income tax rate quarter-over-quarter was driven by a reduction in the U.S. tax rate effective for 2018 as well as tax benefits recognized in 2018 for unrealized capital losses on the divestiture of the CEB Talent Assessment business.

The Tax Cuts and Jobs Act (the "Act”) was enacted on December 22, 2017. Among other things, the Act reduces the U.S. federal corporation tax rate from 35% to 21%, requires companies to pay a one-time transition tax on accumulated deferred foreign income (“ADFI”) of foreign subsidiaries that were previously tax deferred and creates a new tax on global intangible low-taxed income (“GILTI”) attributable to foreign subsidiaries. As of March 31, 2018, we have not completed our accounting for the tax effects of enactment of the Act because all of the necessary information is not currently available, prepared or analyzed. As such, the amounts we have recorded are provisional estimates and as permitted by the SEC per Staff Accounting Bulletin No. 118. We expect to complete the accounting for the impact of tax reform by the fourth quarter of 2018 as we complete our analysis and receive additional guidance from the Internal Revenue Service pertaining to the Act.

Companies have the option to account for the GILTI tax as a period cost in the period incurred, or to recognize deferred taxes for temporary differences including outside basis differences expected to reverse as a result of the GILTI provisions. The Company has not yet determined its policy election with respect to GILTI. We have, however, included an estimate of the current year GILTI impact in the 2018 tax provision calculation.

Upon enactment of the Act, we remeasured U.S. deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21% and recorded a provisional amount which reduced our 2017 income tax expense by $123.2 million. We are still analyzing certain aspects of the Act and refining our deferred tax calculations, which could affect the measurement of these balances or give rise to new deferred tax amounts. We did not adjust the initial provisional amount in the three months ended March 31, 2018.

The tax on ADFI is based on post-1986 earnings and profits ("E&P") of our foreign subsidiaries that were previously deferred from U.S. income taxes. We recorded a provisional amount for this one-time transition tax liability, resulting in an increase in income tax expense of $63.6 million in 2017. We have not yet completed our calculation of the tax on ADFI given the need to obtain, prepare and analyze various information relevant to such calculation including, but not limited to, our post-1986 E&P, foreign taxes and amounts held in cash or other specified assets on various measurement dates. We did not adjust the initial provisional amount in the three months ended March 31, 2018.

As of March 31, 2018 and December 31, 2017, the Company had gross unrecognized tax benefits of $63.2 million and $60.3 million, respectively. It is reasonably possible that gross unrecognized tax benefits will decrease by approximately $8.0 million within the next 12 months, due to the anticipated closure of audits and the expiration of certain statutes of limitation.

In July 2015, the United States Tax Court (the “Court”) issued an opinion relating to the treatment of stock-based compensation expense in an inter-company cost-sharing arrangement. In its opinion, the Court held that affiliated companies may exclude stock-based compensation expense from their cost-sharing arrangement. The Internal Revenue Service is appealing the decision. Because of uncertainty related to the final resolution of this litigation and the recognition of potential benefits to the Company, the Company has not recorded any financial statement benefit associated with this decision. The Company will monitor developments related to this case and the potential impact of those developments on the Company’s consolidated financial statements.

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Note 10 — 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 following tables provide information regarding the Company’s outstanding derivatives contracts as of the dates indicated (in thousands, except for number of outstanding contracts):

March 31, 2018
Derivative Contract Type	Number of Outstanding Contracts	Notional Amounts		Fair Value Asset (Liability), Net (3)			Balance Sheet Line Item	Unrealized Gain Recorded in AOCI/L
Interest rate swaps (1)	5	$	1,400,000	$	17,314		Other assets	$	12,597
Foreign currency forwards (2)	46	313,425		(495		)	Accrued liabilities	—
Total	51	$	1,713,425	$	16,819			$	12,597

December 31, 2017
Derivative Contract Type	Number of Outstanding Contracts	Notional Amounts		Fair Value Asset (Liability), Net (3)		Balance Sheet Line Item	Unrealized Gain Recorded in AOCI/L
Interest rate swaps (1)	5	$	1,400,000	$	3,412	Other assets	$	2,483
Foreign currency forwards (2)	137	686,764		448		Other current assets	—
Total	142	$	2,086,764	$	3,860		$	2,483

(1) The swaps have been designated and are accounted for as cash flow hedges of the forecasted interest payments on borrowings. As a result, changes in the fair value of the swaps are deferred and recorded in AOCI/L, net of tax effect (see Note 7 — Debt for additional information).

(2) The Company has foreign exchange transaction risk since 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 since the Company does not designate these contracts as hedges for accounting purposes. All of the outstanding contracts at March 31, 2018 matured by the end of April 2018.

(3) See Note 11 — Fair Value Disclosures for the determination of the fair value of these instruments.

At March 31, 2018, 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 following table provides information regarding amounts recognized in the Condensed Consolidated Statements of Operations for derivative contracts for the periods indicated (in thousands):

	Three Months Ended
	March 31,
Amount recorded in:	2018			2017
Interest expense (1)	$	945		$	1,375
Other (gain) loss, net (2)	(7,232		)	219
Total (income) expense, net	$	(6,287	)	$	1,594

(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.

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Note 11 — Fair Value Disclosures

The Company’s financial instruments include cash equivalents, fees receivable from customers, accounts payable, and accruals which are normally short-term in nature. The Company believes the carrying amounts of these financial instruments reasonably approximate their fair value due to their short-term nature. The Company’s financial instruments also include its outstanding variable-rate borrowings under the 2016 Credit Agreement. The Company believes the carrying amount of its variable-rate borrowings reasonably approximates their fair value because the rate of interest on those borrowings reflects 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 consolidated balance sheets.

FASB ASC Topic 820 provides a framework for the measurement of fair value and a valuation hierarchy based upon the transparency of inputs used in the valuation of assets and liabilities. Classification within the hierarchy is based upon 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. The Company does not currently utilize Level 3 valuation inputs to remeasure any of its assets or liabilities. However, Level 3 inputs may be used by the Company in its required annual impairment review of recorded goodwill. Information regarding the periodic assessment of the Company’s goodwill is included in Note 6 — Goodwill and Intangible Assets. The Company does not typically transfer assets or liabilities between different levels of the fair value hierarchy.

The following table presents the fair value of certain financial assets and liabilities (in thousands):

Description:	March 31, 2018		December 31, 2017
Assets:
Values based on Level 1 inputs:
Deferred compensation plan assets (1)	$	16,746	$	29,108
Total Level 1 inputs	16,746		29,108
Values based on Level 2 inputs:
Deferred compensation plan assets (1)	59,477		59,017
Foreign currency forward contracts (2)	156		2,053
Interest rate swap contracts (3)	17,314		3,412
Total Level 2 inputs	76,947		64,482
Total Assets	$	93,693	$	93,590
Liabilities:
Values based on Level 2 inputs:
Deferred compensation plan liabilities (1)	$	73,172	$	89,900
Foreign currency forward contracts (2)	651		1,605
Senior Notes due 2025 (4)	801,640		837,560
Total Level 2 inputs	875,463		929,065
Total Liabilities	$	875,463	$	929,065

(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 and mutual funds, and company-owned life insurance contracts, all of which are valued based on Level 1 or Level 2 valuation 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.

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(2) The Company enters into foreign currency forward exchange contracts to hedge the effects of adverse fluctuations in foreign currency exchange rates (see Note 10 - Derivatives and Hedging). Valuation of the foreign currency forward contracts is based on observable foreign currency exchange rates in active markets, which the Company considers a Level 2 input.

(3) The Company has interest rate swap contracts which hedge the risk of variability from interest payments on its borrowings (see Note 7 — Debt). The fair value of the swaps is based on mark-to-market valuations prepared by a third-party broker. The valuations are based on observable interest rates from recently executed market transactions and other observable market data, which the Company considers Level 2 inputs. The Company independently corroborates the reasonableness of the valuations prepared by the third-party broker through the use of an electronic quotation service.

(4) As discussed in Note 7 — Debt, the Company has $800.0 million of principal amount fixed-rate Senior Notes due in 2025. The estimated fair value of the notes was derived from quoted market prices provided by an independent dealer which the Company considers to be a Level 2 input.

Note 12 — Employee Benefits

Defined-Benefit Pension Plans

The Company has defined-benefit pension plans in several of its international locations. Benefits paid under these plans are based on years of service and level of employee compensation. The Company’s defined-benefit pension plans are accounted for in accordance with FASB ASC Topics 715 and 960. Net periodic pension expense was $0.7 million for both the three months ended March 31, 2018 and 2017.

Note 13 — Commitments and Contingencies

Contingencies

The Company is involved in legal proceedings and litigation arising in the ordinary course of business. We believe 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 our financial position, cash flows, or results of operations when resolved in a future period.

The Company has various agreements that may obligate us 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 we customarily agree to hold the other party harmless against losses arising from a breach of representations related to such matters 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 us under these agreements have not been material. As of March 31, 2018, the Company did not have any material payment obligations under any such indemnification agreements.

Note 14 — Subsequent Events

In April 2018, the Company sold its CEB Talent Assessment and CEB Workforce Survey and Analytics businesses. These two businesses were acquired in April 2017 with the CEB acquisition and were reported by the Company in the Talent Assessment & Other segment. Additional information regarding these divestitures is included in Note 2 — Acquisitions and Divestitures.

In addition, on April 30, 2018, the Company repaid $450.0 million of its outstanding debt. Note 7 — Debt provides additional information regarding the Company's debt obligations.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The purpose of the following Management’s Discussion and Analysis (“MD&A”) is to facilitate an understanding of significant factors influencing the quarterly operating results, financial condition and cash flows of Gartner, Inc. Additionally, the MD&A conveys our expectations of the potential impact of known trends, events or uncertainties that may impact future results. You should read this discussion in conjunction with our condensed consolidated financial statements and related notes included in this report and our Annual Report on Form 10-K for the year ended December 31, 2017 (the "2017 Form 10-K"). Historical results and percentage relationships are not necessarily indicative of operating results for future periods. References to “Gartner,” the "Company,” “we,” “our” and “us” in this MD&A are to Gartner, Inc. and its consolidated subsidiaries.

In April 2018 the Company sold its CEB Talent Assessment and CEB Workforce Survey and Analytics businesses. These two businesses were acquired in April 2017 with the CEB Inc. acquisition and were reported by the Company in the Talent Assessment & Other segment. The results of these businesses are included in the consolidated results of operations and segment results presented below for the three months ended March 31, 2018. Additional information regarding these divestitures is included in Note 2 — Acquisitions and Divestitures in the Notes to the Condensed Consolidated Financial Statements.

FORWARD-LOOKING STATEMENTS

In addition to historical information, this Quarterly Report on Form 10-Q contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements are any statements other than statements of historical fact, including statements regarding our expectations, beliefs, hopes, intentions or strategies regarding the future. In some cases, forward-looking statements can be identified by the use of words such as “may,” “will,” “expect,” “should,” “could,” “believe,” “plan,” “anticipate,” “estimate,” “predict,” “potential,” “continue” or other words of similar meaning.

We operate in a very competitive and rapidly changing environment that involves numerous risks and uncertainties, some of which are beyond our control. Additionally, our quarterly and annual revenues, operating income, and cash flows fluctuate as a result of many factors, including: the timing of our Symposium/ITxpo series that normally occurs during the fourth quarter, as well as our other events; the amount of new business generated, including from acquisitions; the mix of domestic and international business; domestic and international economic conditions; changes in market demand for our products and services; changes in foreign currency rates; the timing of the development, introduction and marketing of new products and services; competition in the industry; the payment of performance compensation; and other factors. The potential fluctuations in our operating income could cause period-to-period comparisons of operating results not to be meaningful and could provide an unreliable indication of future operating results. A description of the risk factors associated with our business is included under “Risk Factors” contained in Item 1A. of our 2017 Annual Report on Form 10-K which is incorporated herein by reference.

Forward-looking statements are subject to risks, estimates and uncertainties that could cause actual results to differ materially from those discussed in, or implied by, the forward-looking statements. Factors that might cause such a difference include, but are not limited to, those discussed in “Factors That May Affect Future Performance” and elsewhere in this Quarterly Report on Form 10-Q and in the 2017 Form 10-K. Readers should not place undue reliance on these forward-looking statements, which reflect management’s opinion only as of the date on which they were made. Except as required by law, we disclaim any obligation to review or update these forward-looking statements to reflect events or circumstances as they occur. Readers should carefully review our risk factors described in the 2017 Form 10-K.

BUSINESS OVERVIEW

Gartner, Inc. (NYSE: IT) is the world’s leading research and advisory company and a member of the S&P 500. We equip business leaders with indispensable insights, advice and tools to achieve their mission-critical priorities and build the successful organizations of tomorrow. We believe our unmatched combination of expert-led, practitioner-sourced and data-driven research steers clients toward the right decisions on the issues that matter most. We’re trusted as an objective resource and critical partner by more than 15,000 organizations in more than 100 countries across all major functions, in every industry and enterprise size. Gartner is headquartered in Stamford, Connecticut, U.S.A. and, as of March 31, 2018, we had more than 14,000 associates (excluding the operations that were held-for-sale as of that date).  

Gartner delivers its products and services globally through four business segments: Research, Events, Consulting and Talent Assessment & Other:

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• Research provides trusted, objective insights and advice on the mission-critical priorities of leaders across all functional areas of the enterprise through research and other reports, briefings, proprietary tools, access to our analysts, peer networking services and membership programs that enable our clients to make better decisions. Gartner's traditional strengths in IT, marketing and supply chain research were enhanced in 2017 with Gartner's acquisition of CEB, Inc., which added CEB's best practice and talent management research insights across a range of business functions, to include human resources, finance, sales and legal.

• Events provides business professionals across the organization the opportunity to learn, share and network. From our flagship CIO event Gartner Symposium/ITxpo, to industry-leading conferences focused on specific business roles and topics, to member-driven sessions, our events enable attendees to experience the best of Gartner insight and advice live.

• Consulting provides customized solutions to unique client needs through on-site, day-to-day support, as well as proprietary tools for measuring and improving IT performance with a focus on cost, performance, efficiency and quality.

• Talent Assessment & Other helps organizations assess, engage, manage and improve talent. This is accomplished through knowledge and skills assessments, training programs, workshops, and survey and questionnaire services.

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BUSINESS MEASUREMENTS

We believe that the following business measurements are important performance indicators for our business segments:

BUSINESS SEGMENT	BUSINESS MEASUREMENTS
Research	Total contract value  represents the value attributable to all of our subscription-related contracts. It is calculated as the annualized value of all contracts in effect at a specific point in time, without regard to the duration of the contract. Total contract value primarily includes Research deliverables for which revenue is recognized on a ratable basis, as well as other deliverables (primarily Events tickets) for which revenue is recognized when the deliverable is utilized. Our total contract value consists of Global Technology Sales contract value, which includes sales to users and providers of technology, and Global Business Sales contract value, which includes sales to all other functional leaders.
	Client retention rate represents a measure of client satisfaction and renewed business relationships at a specific point in time. Client retention is calculated on a percentage basis by dividing our current clients, who were also clients a year ago, by all clients from a year ago. Client retention is calculated at an enterprise level, which represents a single company or customer.
	Wallet retention rate represents a measure of the amount of contract value we have retained with clients over a twelve-month period. Wallet retention is calculated on a percentage basis by dividing the contract value of clients, who were clients one year ago, by the total contract value from a year ago, excluding the impact of foreign currency exchange. When wallet retention exceeds client retention, it is an indication of retention of higher-spending clients, or increased spending by retained clients, or both. Wallet retention is calculated at an enterprise level, which represents a single company or customer.
Events	Number of events represents the total number of hosted destination events completed during the period. Single day, local events are excluded.
	Number of attendees represents the total number of people who attend destination events. Single day, local events are excluded.
Consulting	Consulting backlog represents future revenue to be derived from in-process consulting and measurement engagements.
	Utilization rate represents a measure of productivity of our consultants. Utilization rates are calculated for billable headcount on a percentage basis by dividing total hours billed by total hours available to bill.
	Billing rate represents earned billable revenue divided by total billable hours.
	Average annualized revenue per billable headcount represents a measure of the revenue generating ability of an average billable consultant and is calculated periodically by multiplying the average billing rate per hour times the utilization percentage times the billable hours available for one year.

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EXECUTIVE SUMMARY OF OPERATIONS AND FINANCIAL POSITION

We have executed a consistent growth strategy since 2005 to drive revenue and earnings growth. The fundamentals of our strategy include a focus on creating extraordinary research insight, delivering innovative and highly differentiated product offerings, building a strong sales capability, providing world class client service with a focus on client engagement and retention, and continuously improving our operational effectiveness. We continue to focus on maximizing shareholder value.

We had total revenues of $963.6 million in the first quarter of 2018, an increase of 54% compared to the first quarter of 2017. Quarter-over-quarter revenues for Research, Events and Consulting increased 49%, 31% and 5%, respectively, during the first quarter of 2018, which included CEB's operating results. Our Talent Assessment & Other segment contributed $70.7 million of revenues during the first quarter of 2018. For a more complete discussion of our results by segment, see Segment Results below.

For the first quarter of 2018, we had a net loss of $19.6 million and a diluted loss per share of $0.22. Cash provided by operating activities was $2.7 million during the three months ended March 31, 2018 compared to $29.6 million of cash used in operating activities during the three months ended March 31, 2017. As of March 31, 2018, we had $190.0 million of cash and cash equivalents and $866.0 million of available borrowing capacity on our revolving credit facility. For a more complete discussion of our cash flows and financial position, see Liquidity and Capital Resources below.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

The preparation of our consolidated financial statements requires the application of appropriate accounting policies and the use of estimates. Our significant accounting policies are described in Note 1 in the Notes to Consolidated Financial Statements of Gartner, Inc. contained in the 2017 Form 10-K. Management considers the policies discussed below to be critical to an understanding of our financial statements because their application requires complex and subjective management judgments and estimates. Specific risks for these critical accounting policies are also described below.

The preparation of our consolidated financial statements requires us to make estimates and assumptions about future events. We develop our estimates using both current and historical experience, as well as other factors, including the general economic environment and actions we may take in the future. We adjust such estimates when facts and circumstances dictate. However, our estimates may involve significant uncertainties and judgments and cannot be determined with precision. In addition, these estimates are based on our best judgment at a point in time and, as such, they may ultimately differ materially from actual results. Ongoing changes in our estimates could be material and would be reflected in the Company’s consolidated financial statements in future periods.

Our critical accounting policies are described below.

Revenue recognition — On January 1, 2018, the Company adopted Financial Accounting Standards Board Accounting Standards Update No. 2014-09, "Revenue from Contracts with Customers" ("ASU No. 2014-09"). ASU No. 2014-09 and related amendments required changes in revenue recognition policies as well as enhanced disclosures. Among other things, ASU No. 2014-09 requires a five-step evaluative process that consists of:

(1) Identifying the contract with the customer;

(2) Identifying the performance obligations in the contract;

(3) Determining the transaction price for the contract;

(4) Allocating the transaction price to the performance obligations in the contract; and

(5) Recognizing revenue when (or as) performance obligations are satisfied.

The Company adopted ASU No. 2014-09 on January 1, 2018 using the modified retrospective method of adoption. Under this method of adoption, the cumulative effect of applying the new standard is recorded at the date of initial application, with no restatement of the comparative prior periods presented. The adoption of ASU No. 2014-09 did not have a material impact on the Company’s consolidated financial statements. However, the adoption of the new standard required reclassifications of certain amounts presented in the Company’s consolidated balance sheet. Prior to January 1, 2018, the Company recognized revenue in accordance with then-existing generally accepted accounting principles in the United States of America and SEC Staff Accounting Bulletin No. 104, "Revenue Recognition" (“prior GAAP”). Under both ASU No. 2014-09 and prior GAAP, revenue can only be recognized when all of the required criteria are met. Note 1 — Business and Basis of Presentation in the Notes to Condensed Consolidated Financial Statements provides additional information regarding our adoption of ASU No. 2014-09 and its impact on the Company's consolidated financial statements and related disclosures.

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Our revenue by significant source is accounted for as follows:

• Research revenues are mainly derived from subscription contracts for research products. The related revenues are deferred and recognized ratably over the applicable contract term. Fees derived from assisting organizations in selecting the right business software for their needs are recognized when the leads are provided to vendors.

• Events revenues are deferred and recognized upon the completion of the related symposium, conference or exhibition.

• Consulting revenues are principally generated from fixed fee and time and material engagements. Revenues from fixed fee contracts are recognized on a proportional performance basis. Revenues from time and materials engagements are recognized as work is delivered and/or services are provided. Revenues related to contract optimization contracts are contingent in nature and are only recognized upon satisfaction of all conditions related to their payment.

• Talent Assessment & Other revenues arising from knowledge and skill assessment services are recognized based on the nature of the underlying contract: (i) ratably over the term of the service period; (ii) upon delivery; or (iii) on a proportional performance basis. Revenues from training programs and survey and questionnaire products are primarily recognized upon delivery of the service.

The majority of research contracts are billable upon signing, absent special terms granted on a limited basis from time to time. Research contracts are generally non-cancelable and non-refundable, except for government contracts that may have cancellation or fiscal funding clauses. It is our policy to record the amount of a subscription contract that is billable as a fee receivable at the time the contract is signed with a corresponding amount as deferred revenue because the contract represents a legally enforceable claim.

Uncollectible fees receivable — At December 31, 2017, the Company maintained an allowance for losses that was comprised of a bad debt allowance and a revenue reserve. In connection with the adoption of ASU No. 2014-09 on January 1, 2018, management concluded that the revenue reserve was a refund liability rather than a contra-receivable due to the nature of the account activity. As a result, the Company reclassified the revenue reserve of $6.2 million on January 1, 2018 from the allowance for losses to Accounts payable and accrued liabilities and will consistently present the revenue reserve in this manner in all future consolidated balance sheets. Note 1 — Business and Basis of Presentation in the Notes to Condensed Consolidated Financial Statements provides additional information regarding our adoption of ASU No. 2014-09 and its impact on the Company's allowance for losses. Increases and decreases in the allowance for losses are charged to earnings, either to expense (i.e., the bad debt allowance) or revenues (i.e., the revenue reserve).

The determination of the bad debt allowance is based on historical loss experience, an assessment of current economic conditions, the aging of outstanding receivables, the financial health of specific clients and probable losses. This evaluation is inherently judgmental and requires estimates. The Company's bad debt allowance is periodically re-evaluated and adjusted as more information about the ultimate collectability of fees receivable becomes available. Circumstances that could cause our bad debt allowance to increase include changes in our clients’ liquidity and credit quality, other factors negatively impacting our clients’ ability to pay their obligations as they come due and the effectiveness of our collection efforts.

The following table presents our total fees receivable and the related allowance for losses (in thousands):

	March 31, 2018			December 31, 2017
Total fees receivable (1)	$	1,142,064		$	1,189,543
Allowance for losses (2)	(7,100		)	(12,700		)
Fees receivable, net	$	1,134,964		$	1,176,843

(1) Total fees receivable at December 31, 2017 included $26.7 million of contract assets. As a result of the Company's adoption of ASU No. 2014-09 on January 1, 2018, contract assets are now included in Prepaid expenses and other current assets on the Company's Condensed Consolidated Balance Sheet at March 31, 2018.

(2) The allowance for losses at December 31, 2017 included $6.2 million that was attributable to the Company's revenue reserve. As a result of the Company's adoption of ASU No. 2014-09 on January 1, 2018, the revenue reserve balance is now included in Accounts payable and accrued liabilities on the Company's Condensed Consolidated Balance Sheet at March 31, 2018.

Goodwill and other intangible assets — When we acquire a business, we determine the fair value of the assets acquired and liabilities assumed on the date of acquisition, which may include a significant amount of intangible assets such as customer

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relationships, software, content and other intangible assets, as well as resulting goodwill. When determining the fair values of the acquired intangible assets, we consider, among other factors, analyses of historical financial performance and an estimate of the future performance of the acquired business. The fair values of the acquired intangible assets are primarily calculated using an income approach that relies on discounted cash flows. This method starts with a forecast of the expected future net cash flows associated with the asset and then adjusts the forecast to present value by applying an appropriate discount rate that reflects the risk factors associated with the cash flow streams. We consider this approach to be the most appropriate valuation technique because the inherent value of the acquired intangible assets is their ability to generate future income. In a typical acquisition, we engage a third-party valuation expert to assist us with the fair value analyses for acquired intangible assets.

Determining the fair values of acquired intangible assets requires us to exercise significant judgment. We select reasonable estimates and assumptions based on evaluating a number of factors, including, but not limited to, marketplace participants, consumer awareness and brand history. Additionally, there are significant judgments inherent in discounted cash flows such as estimating the amount and timing of projected future cash flows, the selection of appropriate discount rates, hypothetical royalty rates and contributory asset capital charges. Specifically, the discount rates used in discounted cash flow analyses are intended to reflect the risk inherent in the projected future cash flows generated by the underlying acquired intangible assets.

Determining an acquired intangible asset's useful life requires significant judgment and is based on evaluating a number of factors, including, but not limited to, the expected use of the asset, historical client retention rates, consumer awareness and trade name history, as well as any contractual provisions that could limit or extend an asset's useful life.

The Company evaluates recorded goodwill in accordance with FASB Accounting Standards Codification ("ASC") Topic 350, which requires goodwill to be assessed for impairment at least annually and whenever events or changes in circumstances indicate that the carrying value of goodwill may not be recoverable. In addition, an impairment evaluation of our amortizable intangible assets may also be performed if events or circumstances indicate potential impairment. Among the factors that could trigger an impairment review are our current operating results relative to our annual plan or historical performance; changes in our strategic plan or use of our assets; restructuring charges or other changes in our business segments; competitive pressures and changes in the general economy or in the markets in which we operate; and a significant decline in our stock price and our market capitalization relative to our net book value.

FASB ASC Topic 350 requires an annual assessment of the recoverability of recorded goodwill, which can be either quantitative or qualitative in nature, or a combination of the two approaches. Both methods utilize estimates which, in turn, require judgments and assumptions regarding future trends and events. As a result, both the precision and reliability of the resulting estimates are subject to uncertainty. If our goodwill impairment evaluation determines that the fair value of a reporting unit is less than its related carrying amount, we may recognize an impairment charge. Among the factors that we consider in a qualitative assessment are general economic conditions and the competitive environment; actual and projected reporting unit financial performance; forward-looking business measurements; and external market assessments. A quantitative analysis requires management to consider each of the factors relevant to a qualitative assessment, as well as the utilization of detailed financial projections, to include the rate of revenue growth, profitability and cash flows, as well as assumptions regarding discount rates, the Company's weighted average cost of capital and other data, in order to determine a fair value for our reporting units. We conducted a qualitative assessment of the fair value of all of the Company's reporting units during the quarter ended September 30, 2017. The results of this test determined that the fair values of the Company's reporting units continue to exceed their respective carrying values and, as a result, no goodwill impairment was indicated. Note 6 — Goodwill and Intangible Assets in the Notes to Condensed Consolidated Financial Statements provides additional information regarding goodwill and amortizable intangible assets.

Accounting for income taxes — The Company uses the asset and liability method of accounting for income taxes. We estimate our income taxes in each of the jurisdictions where we operate. This process involves estimating our current tax expense or benefit together with assessing temporary differences resulting from differing treatment of items for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included in our consolidated balance sheets. In assessing the realizability of deferred tax assets, we consider if it is more likely than not that some or all of the deferred tax assets will not be realized. In making this assessment, we consider the availability of loss carryforwards, projected reversals of deferred tax liabilities, projected future taxable income, and ongoing prudent and feasible tax planning strategies. The Company recognizes the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained based on the technical merits of the position.

The Company adopted Financial Accounting Standards Board Accounting Standards Update No. 2016-16, "Intra-Entity Transfers of Assets Other Than Inventory," on January 1, 2018. Note 1 — Business and Basis of Presentation in the Notes to Condensed Consolidated Financial Statements provides information regarding our adoption of this accounting standard and its impact.

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Accounting for stock-based compensation — The Company accounts for stock-based compensation awards in accordance with FASB ASC Topics 505 and 718 and SEC Staff Accounting Bulletins No. 107 and No. 110. The Company recognizes stock-based compensation expense, which is based on the fair value of the award on the date of grant, over the related service period. Note 4 — Stock-Based Compensation in the Notes to Condensed Consolidated Financial Statements provides additional information regarding stock-based compensation. Determining the appropriate fair value model and calculating the fair value of stock-based compensation awards requires the use of certain subjective assumptions, including the expected life of a stock-based compensation award and the Company’s common stock price volatility. In addition, determining the appropriate periodic stock-based compensation expense requires management to estimate the likelihood of the achievement of certain performance targets. The assumptions used in calculating the fair values of stock-based compensation awards and the related periodic expense represent management’s best estimates, which involve inherent uncertainties and the application of judgment. As a result, if circumstances change and the Company deems it necessary in the future to modify the assumptions it made or to use different assumptions, or if the quantity and nature of the Company’s stock-based compensation awards changes, then the amount of expense may need to be adjusted and future stock-based compensation expense could be materially different from what has been recorded in the current period.

Restructuring and other accruals — We may record accruals for severance costs, costs associated with excess facilities that we have leased, contract terminations, asset impairments and other costs as a result of ongoing actions we undertake to streamline our organization, reposition certain businesses and reduce ongoing costs. Estimates of costs to be incurred to complete these actions, such as future lease payments, sublease income, the fair value of assets, and severance and related benefits, are based on assumptions at the time the actions are initiated. These accruals may need to be adjusted to the extent actual costs differ from such estimates. In addition, these actions may be revised due to changes in business conditions that we did not foresee at the time such plans were approved. We also record accruals during the year for our various employee cash incentive programs. Amounts accrued at the end of each reporting period are based on our estimates and may require adjustment as the ultimate amount paid for these incentives are sometimes not known with certainty until the end of our fiscal year.

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RESULTS OF OPERATIONS

Consolidated Results

The table below presents an analysis of selected line items and period-over-period changes in our interim Condensed Consolidated Statements of Operations for the periods indicated (in thousands). The operating results of CEB, which was acquired by Gartner on April 5, 2017, are included in the results for the three months ended March 31, 2018.

	Three Months Ended March 31, 2018			Three Months Ended March 31, 2017			Income Increase (Decrease) $			Income Increase (Decrease) %
Total revenues	$	963,565		$	625,169		$	338,396		54	%
Costs and expenses:
Cost of services and product development	357,209			237,609			(119,600		)	(50	)
Selling, general and administrative	487,745			304,244			(183,501		)	(60	)
Depreciation	16,410			10,240			(6,170		)	(60	)
Amortization of intangibles	51,646			6,290			(45,356		)	>(100)
Acquisition and integration charges	59,266			13,272			(45,994		)	>(100)
Operating (loss) income	(8,711		)	53,514			(62,225		)	>(100)
Interest expense, net	(35,059		)	(5,906		)	(29,153		)	>(100)
Other income, net	899			889			10			1
(Benefit) provision for income taxes	(23,284		)	12,064			35,348			>100
Net (loss) income	$	(19,587	)	$	36,433		$	(56,020	)	>(100)%

Total revenues for the three months ended March 31, 2018 increased $338.4 million, to $963.6 million, an increase of 54% compared to the same period in 2017 on a reported basis and 49% excluding the foreign currency impact, primarily due to the CEB acquisition. Please refer to the section of this MD&A below entitled “Segment Results” for a discussion of revenues and results by segment.

Cost of services and product development was $357.2 million during the three months ended March 31, 2018, an increase of $119.6 million compared to the same period in 2017, or 50% on a reported basis and 45% excluding the foreign currency impact. This increase was primarily due to higher payroll and related benefits costs resulting from increased headcount, a substantial portion of which was related to the CEB acquisition. Cost of services and product development as a percentage of revenues was 37% and 38% during the three months ended March 31, 2018 and 2017, respectively.

Selling, general and administrative (“SG&A”) expense was $487.7 million during the three months ended March 31, 2018, an increase of $183.5 million compared to the same period in 2017, or 60% on a reported basis and 55% excluding the foreign currency impact. This increase was primarily due to $87.7 million in higher payroll and related benefits costs, mostly driven by increased headcount, with a substantial portion of the headcount increase due to the CEB acquisition; $22.7 million in higher commissions due to increased sales bookings; and $73.1 million in higher facilities and corporate costs and foreign currency impact. The overall headcount growth includes increases in quota-bearing sales associates at Global Technology Sales and Global Business Sales to 2,746 and 755, respectively, at March 31, 2018. On a combined basis, the total number of quota-bearing sales associates increased by approximately 38% when compared to March 31, 2017, which includes associates added as a result of the CEB acquisition. SG&A expense as a percentage of revenues was 51% and 49% during the three months ended March 31, 2018 and 2017, respectively.

Depreciation increased $6.2 million, or 60%, during the three months ended March 31, 2018 when compared to the same period in 2017 due to property, equipment and leasehold improvements acquired with CEB and additional Gartner investments.

Amortization of intangibles increased $45.4 million during the three months ended March 31, 2018 when compared to the same period in 2017 due to additional amortization from the intangibles recorded in connection with our recent acquisitions.

Acquisition and integration charges increased $46.0 million during the three months ended March 31, 2018 when compared to the same period in 2017. This increase reflects the additional charges resulting from our recent acquisitions and primarily consists of higher professional fees, severance, stock-based compensation charges and accruals for exit costs for certain office space that the Company does not intend to occupy in Arlington, Virginia.

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Operating (loss) income was an operating loss of $(8.7) million during the three months ended March 31, 2018 compared to operating income of $53.5 million for the same period in 2017. The decline reflects several factors, to include higher SG&A expenses and acquisition-related costs, including depreciation, amortization of intangibles, and acquisition and integration charges.

Interest expense, net increased $29.2 million during the three months ended March 31, 2018 when compared to the same period in 2017. The increase was primarily due to higher outstanding borrowings during 2018.

Other income, net was $0.9 million during each of the three months ended March 31, 2018 and 2017. Both periods reflect the net impact of foreign currency gains and losses from our hedging activities, as well as sales of certain state tax credits and the recognition of other tax incentives.

(Benefit) provision for income taxes for the three months ended March 31, 2018 was a benefit of $(23.3) million on a pretax loss of $(42.9) million compared to an expense of $12.1 million on pretax income of $48.5 million in the three months ended March 31, 2017. The effective income tax rate was 54.3% for the three months ended March 31, 2018 and 24.9% for the same period in 2017. The quarter-over-quarter change in the effective income tax rate was primarily attributable to the relative impact of stock- based compensation benefits quarter-over-quarter. The tax benefits from stock-based compensation during the first quarter of 2018 increased the tax rate on pretax losses while such benefits in the first quarter of 2017 decreased the tax rate on pretax income. In addition to the impact of stock-based compensation, the change in the effective income tax rate quarter-over-quarter was driven by a reduction in the U.S. tax rate effective for 2018 as well as tax benefits recognized in 2018 for unrealized capital losses on the divestiture of the CEB Talent Assessment business.

During the three months ended March 31, 2018, our net loss was $(19.6) million compared to net income of $36.4 million during the same period in 2017. The change primarily reflects a decline in our operating profitability and higher interest expense. As a result of such change, our diluted (loss) income per share was $(0.22) during the three months ended March 31, 2018 compared to $0.43 during the same period in 2017.

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SEGMENT RESULTS

We evaluate reportable segment performance and allocate resources based on gross contribution margin. Gross contribution is defined as operating income (loss), excluding certain Cost of services and product development charges, SG&A expenses, Depreciation, Acquisition and integration charges, and Amortization of intangibles. Gross contribution margin is defined as gross contribution as a percentage of revenues.

The Company’s reportable segments are as follows:

• Researchprovides trusted, objective insights and advice on the mission-critical priorities of leaders across all functional areas of the enterprise through research and other reports, briefings, proprietary tools, access to our analysts, peer networking services and membership programs that enable our clients to make better decisions. Gartner's traditional strengths in IT, marketing and supply chain research were enhanced in 2017 with Gartner's acquisition of CEB Inc., which added CEB's best practice and talent management research insights across a range of business functions, to include human resources, finance, sales and legal.

• Eventsprovides business professionals across the organization the opportunity to learn, share and network. From our flagship CIO event Gartner Symposium/ITxpo, to industry-leading conferences focused on specific business roles and topics, to member-driven sessions, our events enable attendees to experience the best of Gartner insight and advice live.

• Consultingprovides customized solutions to unique client needs through on-site, day-to-day support, as well as proprietary tools for measuring and improving IT performance with a focus on cost, performance, efficiency and quality.

• Talent Assessment & Otherhelps organizations assess, engage, manage and improve talent. This is accomplished through knowledge and skills assessments, training programs, workshops, and survey and questionnaire services.

The sections below present the results of these four reportable business segments.

Research

	As Of And For The Three Months Ended March 31, 2018			As Of And For The Three Months Ended March 31, 2017			Increase (Decrease)		Percentage Increase (Decrease)
Financial Measurements:
Revenues (1), (2)	$	763,924		$	511,306		$	252,618	49	%
Gross contribution (1), (2)	$	531,456		$	351,113		$	180,343	51	%
Gross contribution margin	70		%	69		%	1 point		—
Business Measurements (3):
Global Technology Sales (4):
Contract value (1), (5)	$	2,270,000		$	2,004,000		$	266,000	13	%
Client retention	83		%	82		%	1 point		—
Wallet retention	104		%	103		%	1 point		—
Global Business Sales (4):
Contract value (1), (5)	$	612,000		$	574,000		$	39,000	7	%
Client retention	82		%	78		%	4 points		—
Wallet retention	99		%	97		%	2 points		—

(1) Dollars in thousands.

(2) In June 2017, the Company began reporting the results of its Strategic Advisory Services ("SAS") business in Research whereas previously the SAS business was reported with Consulting. Although the impact of the reclassification was not significant, the operating results of the SAS business for the three months ended March 31, 2017 were reclassified from Consulting to Research to be comparable with the current period presentation.

(3) Includes CEB in both the three months ended March 31, 2018 and 2017.

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(4) Global Technology Sales includes sales to users and providers of technology. Global Business Sales includes sales to all other functional leaders.

(5) Contract values are on a foreign exchange neutral basis.

Research segment revenues increased $252.6 million on a reported basis during the three months ended March 31, 2018 compared to the same period in 2017, or 49% on a reported basis and 45% excluding the foreign currency impact. The gross contribution margin improved by one point during the three months ended March 31, 2018, primarily due to improvement in margins for our premium services, partially offset by the impact of the deferred revenue fair value accounting adjustment resulting from the CEB acquisition.

On a foreign currency neutral basis, Global Technology Sales ("GTS") and Global Business Sales ("GBS") contract values increased 13% and 7%, respectively, at March 31, 2018 when compared to March 31, 2017. Total contract value increased to $2.9 billion at March 31, 2018, or 12%. Total contract value at March 31, 2018 increased by double-digits across nearly all of the Company’s client sizes and the majority of its industry segments when compared to March 31, 2017.

GTS client retention was 83% and 82% as of March 31, 2018 and 2017, respectively, while wallet retention was 104% and 103%, respectively. GBS client retention was 82% and 78% as of March 31, 2018 and 2017, respectively, while wallet retention was 99% and 97%, respectively. The number of GTS and GBS client enterprises increased by 7% and 1%, respectively, at March 31, 2018 when compared to March 31, 2017.

Events

	As Of And For The Three Months Ended March 31, 2018			As Of And For The Three Months Ended March 31, 2017			Increase (Decrease)		Percentage Increase (Decrease)
Financial Measurements:
Revenues (1)	$	46,087		$	35,269		$	10,818	31	%
Gross contribution (1)	$	16,190		$	13,567		$	2,623	19	%
Gross contribution margin	35		%	38		%	(3) points		—
Business Measurements:
Number of destination events (2)	14			11			3		27	%
Number of destination events attendees (2)	11,643			9,035			2,608		29	%

(1) Dollars in thousands.

(2) Single day, local events are excluded.

Events revenues increased $10.8 million, or 31%, during the three months ended March 31, 2018 compared to the same period in 2017 on a reported basis and 24% excluding the foreign currency impact. Both attendee and exhibitor revenues increased by double-digits during 2018. We held 14 events during the three months ended March 31, 2018 with a 29% increase in the number of attendees and a 7% increase in exhibitors compared to the same period in 2017, while the average revenue per exhibitor increased by 19% and the average revenue per attendee declined by 3%. The segment gross contribution margin declined three points in the first quarter of 2018 compared to the same period in 2017, primarily due to events timing.

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Consulting

	As Of And For The Three Months Ended March 31, 2018			As Of And For The Three Months Ended March 31, 2017			Increase (Decrease)		Percentage Increase (Decrease)
Financial Measurements:
Revenues (1) (2)	$	82,896		$	78,594		$	4,302	5	%
Gross contribution (1) (2)	$	24,124		$	23,937		$	187	1	%
Gross contribution margin	29		%	30		%	(1) point		—
Business Measurements:
Backlog (1) (3)	$	103,616		$	88,547		$	15,069	17	%
Billable headcount	694			650			44		7	%
Consultant utilization	65		%	65		%	—		—
Average annualized revenue per billable headcount (1)	$	387		$	359		$	28	8	%

(1) Dollars in thousands.

(2) In June 2017, the Company began reporting the results of its SAS business in Research whereas previously the SAS business was reported with Consulting. Although the impact of the reclassification was not significant, the operating results of the SAS business for the three months ended March 31, 2017 were reclassified from Consulting to Research to be comparable with the current period presentation.

(3) The backlog of $88.5 million at March 31, 2017 has been restated to reflect the reclassification of the SAS business.

Consulting revenues increased 5% during the three months ended March 31, 2018 compared to the same period in 2017 on a reported basis and 1% excluding the foreign currency impact, with revenue improvements in labor-based core consulting partially offset by a decline in contract optimization revenue. Gross contribution margin was 29% and 30% for the three months ended March 31, 2018 and 2017, respectively. The margin decline during the first quarter of 2018 was primarily due to lower contract optimization revenue, which has a higher contribution margin than our labor-based core consulting, partially offset by improvements in the margin of our core consulting business. Backlog increased by $15.1 million, or 17%, from March 31, 2017 to March 31, 2018. The $103.6 million of backlog at March 31, 2018 represented approximately four months of backlog, which is in line with the Company's operational target.

Talent Assessment & Other

	Three Months Ended March 31, 2018 (2)
Financial Measurements:
Revenues (1)	$	70,658
Gross contribution (1)	$	43,044
Gross contribution margin	61		%

(1) Dollars in thousands.

(2) In April 2018, the Company sold its CEB Talent Assessment and CEB Workforce Survey and Analytics businesses, which constituted a significant portion of the overall revenues of this segment. These two businesses were acquired in April 2017 with the CEB acquisition. The results of these businesses are included in the Talent Assessment & Other segment results above for the three months ended March 31, 2018. Additional information regarding these divestitures is included in Note 2 — Acquisitions and Divestitures in the Notes to Condensed Consolidated Financial Statements.

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LIQUIDITY AND CAPITAL RESOURCES

We finance our operations through cash generated from our operating activities and borrowings. Note 7 — Debt in the Notes to the Condensed Consolidated Financial Statements herein provides additional information regarding the Company's outstanding debt obligations. At March 31, 2018, we had $190.0 million of cash and cash equivalents and approximately $866.0 million of available borrowing capacity on the revolving credit facility under our 2016 Credit Agreement. We believe that the Company has adequate liquidity to meet its currently anticipated needs.

We have historically generated significant cash flows from our operating activities. Our operating cash flow has been continuously maintained by the leverage characteristics of our subscription-based business model in our Research segment, which is our largest business segment. Revenues in our Research segment increased 49% in the first quarter 2018 compared to the first quarter of 2017, and has historically constituted the majority of our total revenues. The majority of our Research customer contracts are paid in advance, and combined with a strong customer retention rate and high incremental margins, has resulted in continuously strong operating cash flow. Cash flow generation has also benefited from our ongoing efforts to improve the operating efficiencies of our businesses as well as a focus on the optimal management of our working capital as we increase our sales volume.

Our cash and cash equivalents are held in numerous locations throughout the world with approximately 81% held overseas as of March 31, 2018. The Company intends to reinvest substantially all of its accumulated undistributed foreign earnings, except in instances in which repatriation would result in minimal additional tax. As a result of the U.S. Tax Cuts and Jobs Act of 2017, we believe that the income tax impact if such earnings were repatriated would be minimal.

The following table summarizes the changes in the Company’s cash balances for the periods indicated (in thousands):

	Three Months Ended   March 31, 2018			Three Months Ended   March 31, 2017			Cash Increase (Decrease)
Cash provided by (used in) operating activities	$	2,724		$	(29,605	)	$	32,329
Cash used in investing activities	(16,679		)	(121,865		)	105,186
Cash (used in) provided by financing activities	(329,083		)	917,271			(1,246,354		)
Net (decrease) increase in cash and cash equivalents and restricted cash	(343,038		)	765,801			(1,108,839		)
Effects of exchange rates	3,610			6,007			(2,397		)
Beginning cash and cash equivalents and restricted cash	567,058			499,354			67,704
Ending cash and cash equivalents and restricted cash (1)	$	227,630		$	1,271,162		$	(1,043,532	)

(1) The ending cash balance of $227.6 million at March 31, 2018 was classified on the Condensed Consolidated Balance Sheet as follows: (i) $190.0 million of cash and cash equivalents; (ii) $18.1 million of restricted cash classified in Prepaid expenses and other current assets; and (iii) $19.5 million of cash classified in held-for-sale assets. Note 1 — Business and Basis of Presentation in the Notes to Condensed Consolidated Financial Statements provides additional information regarding cash.

Operating

Cash provided by operating activities was $2.7 million in the three months ended March 31, 2018 compared to cash used of $29.6 million during the three months ended March 31, 2017. The quarter-over-quarter increase was due to favorable changes in working capital. The favorable change in working capital was substantially offset by a decline in net income, which was a loss of $19.6 million in first quarter 2018 compared to net income of $36.4 million in the 2017 period, and substantially higher cash payments for interest on our borrowings and acquisition and integration costs in the 2018 period compared to 2017.

Investing

Cash used in investing activities was $16.7 million during the three months ended March 31, 2018 compared to $121.9 million of cash used in the 2017 period. Cash used in the three months ended March 31, 2017 was substantially higher due to cash used for a business acquisition.

Financing

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Cash used in financing activities was $329.1 million during the three months ended March 31, 2018 compared to cash provided of $917.3 million during the same period in 2017. During the 2018 period, the Company used $304.8 million in cash for debt principal repayments and used $24.3 million in cash for net share-related activities. During the 2017 period the Company used $18.9 million in cash for net share-related activities, while net cash provided from borrowings was $936.2 million.

OBLIGATIONS AND COMMITMENTS

Debt

As of March 31, 2018, the Company had $3.0 billion of principal amount of debt outstanding. On April 30, 2018, the Company repaid $450.0 million of the debt outstanding. Note 7 — Debt in the Notes to the Condensed Consolidated Financial Statements provides additional information regarding the Company's debt obligations.

Off-Balance Sheet Arrangements

Through March 31, 2018, we have not entered into any material off-balance sheet arrangements or transactions with unconsolidated entities or other persons.

RECENTLY ISSUED ACCOUNTING STANDARDS

The FASB has issued accounting standards that have not yet become effective and that may impact the Company’s consolidated financial statements or related disclosures in future periods. Note 1 — Business and Basis of Presentation in the Notes to Condensed Consolidated Financial Statements herein provides information regarding these accounting standards.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

INTEREST RATE RISK

As of March 31, 2018, the Company had $3.0 billion in total debt principal outstanding. Note 7 — Debt in the Notes to the Condensed Consolidated Financial Statements provides additional information regarding the Company's debt obligations.

Approximately $2.2 billion of the Company's total debt outstanding as of March 31, 2018 was based on a floating base rate of interest, which potentially exposes the Company to increases in interest rates. However, we partially reduce our overall exposure to changes in interest rates through our interest rate swap contracts, which effectively convert the floating base interest rate on a portion of these variable rate borrowings to fixed rates. Thus we are exposed to base interest rate risk on floating rate borrowings only in excess of any amounts that are not hedged, and at March 31, 2018, the amount of such unhedged borrowings was approximately $800.0 million. As an indication of our potential exposure to changes in interest rates, a hypothetical 25 basis point increase or decrease in interest rates could change our annual pre-tax interest expense by approximately $2.0 million.

FOREIGN CURRENCY RISK

A significant portion of our revenues are earned outside of the U.S., and as a result we conduct business in numerous currencies other than the U.S dollar. Among the major foreign currencies in which we conduct business are the Euro, the British Pound, the Japanese Yen, the Australian dollar, and the Canadian dollar. The reporting currency of our consolidated financial statements is the U.S. dollar. As the values of the foreign currencies in which we operate fluctuate over time relative to the U.S dollar, the Company is exposed to both foreign currency translation and transaction risk.

Translation risk arises as our foreign currency assets and liabilities are translated into U.S. dollars since the functional currencies of our foreign operations are generally denominated in the local currency. Adjustments resulting from the translation of these assets and liabilities are deferred and recorded as a component of stockholders’ equity. A measure of the potential impact of foreign currency translation can be determined through a sensitivity analysis of our cash and cash equivalents. At March 31, 2018, we had $190.0 million of cash and cash equivalents, a portion of which was denominated in foreign currencies. If the exchange rates of the foreign currencies we hold all changed in comparison to the U.S. dollar by 10%, the amount of cash and cash equivalents we would have reported on March 31, 2018 would have increased or decreased by approximately $15.0 million. The translation of our foreign currency revenues and expenses historically has not had a material impact on our consolidated earnings since movements in and among the major currencies in which we operate tend to impact our revenues and expenses fairly equally. However, our earnings could be impacted during periods of significant exchange rate volatility, or when some or all of the major currencies in which we operate move in the same direction against the U.S dollar.

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Transaction risk arises when our foreign subsidiaries enter into transactions that are denominated in a currency that may differ from the local functional currency. As these transactions are translated into the local functional currency, a gain or loss may result, which is recorded in current period earnings. We typically enter into foreign currency forward exchange contracts to mitigate the effects of some of this foreign currency transaction risk. Our outstanding currency contracts as of March 31, 2018 had an immaterial net unrealized loss. 

CREDIT RISK

Financial instruments that potentially subject the Company to concentration of credit risk consist primarily of short-term, highly liquid investments classified as cash equivalents, accounts receivable, interest rate swap contracts and foreign exchange contracts. The majority of the Company’s cash and cash equivalents, interest rate swap contracts, and its foreign exchange contracts are with large investment grade commercial banks. Accounts receivable balances deemed to be collectible from customers have limited concentration of credit risk due to our diverse customer base and geographic dispersion.

ITEM 4. CONTROLS AND PROCEDURES

We have established disclosure controls and procedures that are designed to ensure that the information we are required to disclose in our reports filed under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), is recorded, processed, summarized and reported in a timely manner. Specifically, these controls and procedures ensure that the information is accumulated and communicated to our executive management team, including our chief executive officer and our chief financial officer, to allow timely decisions regarding required disclosure.

Management conducted an evaluation, as of March 31, 2018, of the effectiveness of the design and operation of our disclosure controls and procedures, under the supervision and with the participation of our chief executive officer and chief financial officer. Based upon that evaluation, our chief executive officer and chief financial officer have concluded that the Company’s disclosure controls and procedures are effective in alerting them in a timely manner to material Company information required to be disclosed by us in reports filed under the Exchange Act.

There have been no changes in the Company’s internal control over financial reporting during the period covered by this report that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We are involved in legal and administrative proceedings and litigation arising in the ordinary course of business. We believe 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 our financial position or results of operations when resolved in a future period.

ITEM 1A. RISK FACTORS

Risk factors associated with our business are included under “Risk Factors” contained in Item 1A. of the Company's 2017 Form 10-K and are incorporated herein by reference.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

There were no unregistered sales of equity securities during the period covered by this report.

Issuer Purchases of Equity Securities

The Company has a $1.2 billion board authorization to repurchase the Company's common stock. The Company may repurchase its common stock from time-to-time in amounts and at prices 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, private transactions or other transactions and will be funded from cash on hand and

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borrowings under the Company’s 2016 Credit Agreement. Repurchases may also be made from time-to-time in connection with the settlement of the Company's share-based compensation awards.

The following table summarizes the repurchases of our outstanding common stock during the three months ended March 31, 2018 pursuant to our $1.2 billion share repurchase authorization and pursuant to the settlement of share-based compensation awards:

Period	Total Number of Shares Purchased (#)	Average Price Paid Per Share ($)		Maximum Approximate Dollar Value of Shares That May Yet Be Purchased Under The Plans Or Programs (in billions)
2018
January	28,085	$	126.03
February	181,956	117.79
March	29,227	117.52
Total for quarter	239,268	$	118.73	$	1.1

(1) All of the shares repurchased during the three months ended March 31, 2018 were pursuant to the settlement of share-based compensation awards. No shares were repurchased under the Company's publicly-announced $1.2 billion share repurchase program.

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ITEM 6. EXHIBITS

EXHIBIT NUMBER	DESCRIPTION OF DOCUMENT
10.1*+	Form of 2018 Stock Appreciation Right Agreement.
10.2*+	Form of 2018 Performance Stock Unit Agreement.
31.1*	Certification of chief executive officer under Rule 13a — 14(a)/15d — 14(a).
31.2*	Certification of chief financial officer under Rule 13a — 14(a)/15d — 14(a).
32*	Certification under 18 U.S.C. 1350.
101*	Interactive data files pursuant to Rule 405 of Regulation S-T: (i) the Condensed Consolidated Balance Sheets at March 31, 2018 and December 31, 2017, (ii) the Condensed Consolidated Statements of Operations for the three months ended March 31, 2018 and 2017, (iii) the Condensed Consolidated Statements of Comprehensive Income for the three months ended March 31, 2018 and 2017, (iv) the Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2018 and 2017, and (v) the Notes to Condensed Consolidated Financial Statements.

* Filed with this document.

+ Management compensation plan or arrangement.

Items 3, 4, and 5 of Part II are not applicable and have been omitted.

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		Gartner, Inc.
Date:	May 8, 2018	/s/ Craig W. Safian
		Craig W. Safian
		Executive Vice President and Chief Financial Officer
		(Principal Financial and Accounting Officer)

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EX-10.1

GARTNER, INC.

2014 LONG-TERM INCENTIVE PLAN

STOCK APPRECIATION RIGHT AGREEMENT

Gartner, Inc. (the “Company”) hereby grants you (or the “Grantee”) a stock appreciation right (the “SAR”) under the Company’s 2014 Long-Term Incentive Plan (the “Plan”) to exercise in exchange for a payment from the Company pursuant to this SAR. The date of this Agreement is February 8, 2018 (the “Grant Date”). In general, the latest date this SAR will expire is February 8, 2025 (the “Expiration Date”). However, as provided in Appendix A (attached hereto), this SAR may expire earlier than the Expiration Date. Subject to the provisions of Appendix A and of the Plan, the principal features of this SAR are as follows:

Number of Shares to which this SAR pertains: As provided in the notice of grant.     

Exercise Price per Share: As provided in the notice of grant.

Vesting Schedule:

Twenty-five percent (25%) of the Shares to which this SAR pertains shall vest on each of the first four anniversaries of the date hereof, or February 8, 2019, 2020, 2021 and 2022, subject to Grantee’s Continued Service through each such date.

APPENDIX A

TERMS AND CONDITIONS OF STOCK APPRECIATION RIGHTS

1.Grant of SAR. The Company hereby grants to the Grantee under the Plan, as a separate incentive in connection with his or her employment and not in lieu of any salary or other compensation for his or her services, a Stock Appreciation Right (“SAR”) pertaining to all or any part of an aggregate of Shares shown on the attached notice of grant, which SAR entitles the Grantee to exercise the SAR in exchange for Shares in the amount determined under Paragraph 9below; provided, however, that notwithstanding any contrary provision of this Agreement (including, but not limited to, the notice of grant), should Grantee’s Continued Service end at any time during the calendar year in which the grant was made, then the number of Shares to which this SAR pertains will be reduced to equal the percentage of days in that year in which the Grantee was in Continued Service (i.e., for the avoidance of doubt, the number of Shares will equal the number specified in the notice of grant, multiplied by the number of days from January 1 for which the Grantee was in Continued Service, divided by 365).

2.Exercise Price. The purchase price per Share for this SAR (the “Exercise Price”) shall be $99.07, which is the Fair Market Value of a Share on the Grant Date. When the SAR is exercised, the purchase price will be deemed paid by the Grantee for the exercised portion of the SAR through the past services rendered by the Grantee, and will be subject to any appropriate tax withholdings.

3.Vesting Schedule. Except as otherwise provided in this Agreement, the right to exercise this SAR will vest in accordance with the vesting schedule set forth in the notice of grant which constitutes part of this Agreement. Shares scheduled to vest on any date will vest only if the Grantee remains in Continued Service through such date. Should the Grantee’s Continued Service end at any time (the “Termination Date”), any unvested portion of this SAR will be immediately cancelled; provided, however, that if termination of Continued Service results from the Grantee’s death, Disability or Retirement, then any unvested portion of this SAR shall vest as follows:

(a) If termination of Continued Service is due to the Grantee’s death or Disability, the unvested portion of this SAR shall vest in full on the Termination Date;

(b) If termination of Continued Service is due to Retirement and the Grantee is less than age 60, the unvested portion of this SAR that would have vested by its terms within twelve (12) months from the Termination Date shall continue to vest as set forth in the notice of grant despite the termination of service;

(c) If termination of Continued Service is due to Retirement and the Grantee is age 60 (but less than age 61) on the Termination Date, the unvested portion of this SAR that would have vested by its terms within twenty-four (24) months from the Termination Date shall continue to vest as set forth in the notice of grant despite the termination of service;

(d) If termination of Continued Service is due to Retirement and the Grantee is age 61 (but less than age 62) on the Termination Date, the unvested portion of this SAR that would have vested by its terms within thirty-six (36) months from the Termination Date shall continue to vest as set forth in the notice of grant despite the termination of service; and

(e)If termination of Continued Service is due to Retirement and the Grantee is     age 62 or older on the Termination Date, the entire unvested portion of this     SAR shall continue to vest as set forth in the Notice of grant despite the     termination of Service;

providedfurther, however, that Grantee is in full compliance with all the terms of this Agreement at the time of vesting. The Committee, in its discretion, may accelerate the vesting of the balance, or some lesser portion of the balance, of the SARs at any time, subject to the terms of the Plan. If so accelerated, such SARs will be considered as having vested as of the date specified by the Committee.

4.Termination of SAR. In the event of the Grantee’s termination of Continued Service for any reason other than Retirement, Disability or death, the Grantee may, within ninety (90) days after the date of such termination of Continued Service (excluding any period during which Grantee is prohibited from trading under the Company’s Insider Trading Policy), or prior to the Expiration Date, whichever shall first occur, exercise any vested but unexercised portion of this SAR. In the event of the Grantee’s termination of Continued Service due to Disability or death, the Grantee may, within twelve (12) months after the date of such termination, or prior to the Expiration Date, whichever shall first occur, exercise any vested but unexercised portion of this SAR. In the event of the Grantee’s termination of Continued Service due to Retirement, the Grantee may exercise any vested but unexercised portion of this SAR through the Expiration Date. Any unvested portion of this SAR automatically will terminate and be forfeited (at no cost to the Company) on the first day on which it no longer is possible such portion to become vested.

5.Death of Grantee. In the event that the Grantee dies while in the employ of the Company and/or a parent of the Company or Subsidiary, the administrator or executor of the Grantee’s estate (or such other person to whom the SAR is transferred pursuant to the Grantee’s will or in accordance with the laws of descent and distribution), may exercise any vested but unexercised portion of the SAR in accordance with Paragraph 4 above. Any such transferee must furnish the Company (a) written notice of his or her status as a transferee, (b) evidence satisfactory to the Company to establish the validity of the transfer of this SAR and compliance with any laws or regulations pertaining to such transfer, and (c) written acceptance of the terms and conditions of this SAR as set forth in this Agreement.

6.Persons Eligible to Exercise SAR. Except as provided in Paragraph 5 above or as otherwise determined by the Committee in its discretion, this SAR shall be exercisable during the Grantee’s lifetime only by the Grantee.

7.SAR is Not Transferable. Except to the limited extent provided in Paragraph 5 above, this grant and the rights and privileges conferred hereby shall not be transferred, assigned, pledged or hypothecated in any way (whether by operation of law or otherwise) and shall not be subject to sale under execution, attachment or similar process. Upon any attempt to transfer, assign, pledge, hypothecate or otherwise dispose of this grant, or of any right or privilege conferred hereby, or upon any attempted sale under any execution, attachment or similar process, this grant and the rights and privileges conferred hereby immediately shall become null and void. Notwithstanding the preceding, the Grantee may transfer (not for consideration and for bona fide estate planning purposes) the Stock Appreciation Rights awarded under this Agreement to a revocable estate planning trust that is established solely for the benefit of Grantee and his or her immediate family. Any such transfer will be permitted only if it is in compliance with such rules and procedures as the Company may establish from time to time. Among other things, Grantee must acknowledge and agree that (a) for U.S. income tax purposes, all taxable income from the Stock Appreciation Rights will be reported to Grantee alone, (b) if Grantee proposes to change the nature or character of the transferee trust, Grantee first must inform the Company and the Company may require that the Stock Appreciation Rights be transferred back to Grantee alone, and (c) no additional other or further transfers of the Stock Appreciation Rights will be permitted under any circumstance.

8.Exercise of SAR. This SAR may be exercised by the person then entitled to do so as to any Shares, and such exercise must be in accordance with the Company’s published exercise procedures, as in effect from time to time, which may require the Grantee to exercise this SAR through the Company’s designated broker or administrator. All exercises must be accompanied by payment of the aggregate exercise price together with all taxes the Company determines are required to be withheld by reason of the exercise of this SAR or as are otherwise required under Paragraph 10 below. Exercise forms are available from the Stock Plan Administration. Payment of the aggregate exercise price must be (i) in cash (including check, bank draft or money order), or (ii) for “cashless exercises” during the open trading window, by delivery of such documentation as the Company and any broker of deposit, if applicable, shall require to effect an exercise of the SAR and delivery to the Company of the sale or loan proceeds required to pay the exercise price, in each case plus any applicable withholding taxes.

9.Payment of SAR Amount. Upon exercise of this SAR, the Grantee shall be entitled to receive the number of Shares (the “SAR Amount”), less applicable withholdings, determined by (i) multiplying (a) the difference between the Fair Market Value of a Share over the Exercise Price; times (b) the number of Shares with respect to which this SAR is exercised, and (ii) dividing the product of (a) and (b) by the Fair Market Value of a Share. The SAR Amount shall be paid solely in whole Shares; any fractional amount shall be rounded downto the nearest whole share. Shares issued pursuant to the exercise of this SAR may be delivered in the form and manner determined by the Company, including, without limitation, in book form or listed in street name with a brokerage company of the Company’s choice. For purposes of this Paragraph 9, Fair Market Value has the same meaning as in the Plan or as otherwise determined by the Company or its delegate.

10.Tax Withholding and Payment Obligations. When the Shares are issued as payment for exercised SARs, the Grantee will recognize immediate U.S. taxable income if the Grantee is a U.S. taxpayer. If the Grantee is a non-U.S. taxpayer, the Grantee will be subject to applicable taxes in his or her jurisdiction. The Company (or the employing parent of the Company or Subsidiary) will withhold a portion of the Shares otherwise issuable in payment for exercised SARs that have an aggregate market value sufficient to pay the minimum federal, state and local income, employment and any other applicable taxes required to be withheld by the Company (or the employing parent of the Company or Subsidiary) with respect to the Shares. No fractional Shares will be withheld or issued pursuant to the exercise of SARs and the issuance of Shares thereunder. The Company (or the employing parent of the Company or Subsidiary) may instead, in its discretion, withhold an amount necessary to pay the applicable taxes from the Grantee’s paycheck, with no withholding of Shares. In the event the withholding requirements are not satisfied through the withholding of Shares (or, through the Grantee’s paycheck, as indicated above), no payment will be made to the Grantee (or his or her estate) for SARs unless and until satisfactory arrangements (as determined by the Committee) have been made by the Grantee with respect to the payment of any income and other taxes which the Company determines must be withheld or collected with respect to such SARs. By accepting this award of SARs, the Grantee expressly consents to the withholding of Shares and to any cash or Share withholding as provided for in this Paragraph 10. All income and other taxes related to the SAR award and any Shares delivered in payment thereof are the sole responsibility of the Grantee. In no event will the Company reimburse the Grantee for any taxes that may be imposed on the Grantee as result of Section 409A.

11.Suspension of Exercisability. If at any time the Company shall determine, in its discretion, that the listing, registration or qualification of the SARs upon any securities exchange or under any state or federal law, or the consent or approval of any governmental regulatory authority, is necessary or desirable as a condition of the exercise of SARs hereunder, this SAR may not be exercised, in whole or in part, unless and until such listing, registration, qualification, consent or approval shall have been effected or obtained free of any conditions not acceptable to the Company. The Company shall make reasonable efforts to meet the requirements of any such state or federal law or securities exchange and to obtain any such consent or approval of any such governmental authority.

12.No Rights of Stockholder. Neither the Grantee (nor any transferee) shall be or have any of the rights or privileges of a stockholder of the Company in respect of any of the Shares covered by this SAR.

13.Successors and Assigns. The Company may assign any of its rights under the Agreement to single or multiple assignees, and this Agreement shall inure to the benefit of the successors and assigns of the Company. The rights and obligations of the Grantee under this Agreement may be assigned only with the prior written consent of the Company.

14.No Effect on Employment. The Grantee’s employment with the Company and any parent of the Company or Subsidiary is on an at-will basis only, subject to the provisions of applicable law. Accordingly, subject to any written, express employment contract with the Grantee, nothing in this Agreement or the Plan shall confer upon the Grantee any right to continue to be employed by the Company or any parent of the Company or Subsidiary or shall interfere with or restrict in any way the rights of the Company or the employing parent of the Company or Subsidiary, which are hereby expressly reserved, to terminate the employment of the Grantee at any time for any reason whatsoever, with or without good cause. Such reservation of rights can be modified only in an express written contract executed by a duly authorized officer of the Company or the parent of the Company or Subsidiary employing the Grantee.

15.Address for Notices. Any notice to be given to the Company under the terms of this Agreement shall be addressed to the Company, in care of its Secretary at theCompany’s headquarters, P.O. Box 10212, 56 Top Gallant Road, Stamford, CT 06902-7700, or at such other address as the Company may hereafter designate in writing.

16.Maximum Term of SAR. Notwithstanding any other provision of this Agreement, this SAR is not exercisable after the Expiration Date.

17.Non-Competition. (a)(i) “Competitive Acts” shall mean: (A) the development, production, marketing or selling of (or assisting others to develop, produce, market or sell): (x) syndicated research that competes with the Company or its subsidiaries; or (y) a product or service which is competitive with the existing or planned products or services of the Company with which Grantee was involved in or managed at any time during the last twenty-four (24) months of the Employment; and (B) the direct or indirect provision of services to, or solicitation of, the Company’s clients or known prospects with whom Grantee had contact, managed, or became aware of as a result of being employed by the Company, for the purposes of developing, producing, marketing or selling such competitive products or services.

(ii)    Grantee understands and agrees that the Company’s business is global in nature and that its clients are located throughout the world; therefore, a territorial limitation on the non-competition covenants set forth in Paragraph 17 would not allow the Company to adequately protect its legitimate business interests, and the absence of such a limitation is entirely reasonable under these circumstances. In addition, Grantee agrees that the provisions of this Paragraph 17 are reasonable to protect and preserve the Company’s legitimate business interests, including the protection of the Company’s Confidential Information and the Company’s substantial investment made to develop and retain its Confidential Information, client base, accounts and related goodwill.

(iii)    The Company may, in its sole discretion, waive any portion of the Grantee’s obligations contained in Paragraph 17. No such waiver shall be valid unless directly provided to Grantee, in writing, by the Company’s General Counsel or his/her designee.

(b)    Grantee agrees that, for a period of two (2) years following the termination of his or her employment with the Company, for any reason whatsoever, the Grantee will not, on his or her own behalf or on behalf of any other person or entity (whether as a consultant, analyst, sales person, independent contractor, independent business venturer, partner, member, employee or otherwise), directly or indirectly: (i) engage in any Competitive Acts; and/or (ii) entice, encourage, cause or invite any of the Company’s clients, known prospects, and vendors to discontinue, diminish, or otherwise adversely modify the business done with the Company, or otherwise interfere with the relationship between the Company and its clients, known prospects, and vendors.

(c)    Grantee agrees that, in addition to any and all other remedies available to the Company (at law, in equity, or as otherwise set forth in this Agreement), the Company shall be entitled to liquidated damages for any violation of Paragraph 17 in an amount equal to: (i) the final twelve (12) months’ salary, commissions, and bonus paid to the Grantee; and (ii) an additional amount equal to the aggregate dollar value of shares underlying any stock appreciation rights, performance stock units, and/or restricted stock units that vested (or, in the case of stock appreciation rights, vested and Grantee exercised) at any time during the twelve (12) months prior to separating from the Company. The dollar value of each such share shall be equal to the closing price of Gartner stock on the date of grant of the applicable stock appreciation right, performance stock unit or restricted stock unit. Grantee agrees that the liquidated damages set forth herein are a reasonable approximation of the damages experienced by the Company for a violation of Paragraph 17, and are not to be deemed a penalty of any kind.

(d)    Grantee acknowledges that the time, geographic and scope limitations of the non-competition obligation set forth herein are fair and reasonable in all respects, and that Grantee will not be precluded from gainful employment if obligated to comply with the provisions hereof. To the extent a court of appropriate jurisdiction finds the duration and/or geographic scope of the non-competition or non-solicitation restrictions to be unenforceable under applicable law, then it is the intention of the parties that such restriction be enforced to the fullest extent which the court deems reasonable. In the event of Grantee’s breach or violation of this Paragraph 17, or good faith allegation by the Company of such breach or violation, the restricted periods set forth in this Paragraph 17 shall be tolled until such breach or violation, or allegation thereof, has been duly cured or resolved.

(e)    During the restricted period set forth above, the Grantee will notify (in writing and not less than 72 hours in advance) the Company’s General Counsel if he or she intends to become an employee or other service provider of any entity other than the Company (for example, but not by way of limitation, as an employee, consultant, analyst, sales person, independent contractor, agent, independent business venturer, partner or member).

18.Non‑Solicitation and No‑Hire. The Grantee further agrees that, for a period of two (2) years following the termination of his or her employment with the Company, for any reason whatsoever, the Grantee will not, directly or indirectly solicit, entice, or recruit employees of the Company to leave its employ, or offer or cause to be offered employment to any person who was employed by the Company at any time during the twelve (12) months prior to the termination of Grantee’s employment with the Company.General mass solicitations of employment that are not directed at the Company or any employee(s) of the Company shall not be prohibited by this Paragraph 18.

19.Binding Agreement. Subject to the limitation on the transferability of this SAR contained herein, this Agreement shall be binding upon and inure to the benefit of the heirs, legatees, legal representatives, successors and assigns of the parties hereto.

20.Governing Law. This Agreement shall be construed in accordance with and governed by the laws of the State of Connecticut, other than its conflicts of laws provisions.

21.Plan Governs. This Agreement is subject to all of the terms and provisions of the Plan. In the event of a conflict between one or more provisions of this Agreement and one or more provisions of the Plan, the provisions of the Plan shall govern. Capitalized terms and phrases used and not defined in this Agreement shall have the meaning set forth in the Plan.

22.Committee Authority. The Committee shall have all discretion, power, and authority to interpret the Plan and this Agreement and to adopt such rules for the administration, interpretation and application of the Plan as are consistent therewith (including, but not limited to, the determination of whether or not any SARs have vested). All actions taken and all interpretations and determinations made by the Committee in good faith shall be final and binding upon the Grantee, the Company and all other interested persons, and shall be given the maximum deference permitted by law. No member of the Committee shall be personally liable for any action, determination or interpretation made in good faith with respect to the Plan or this Agreement.

23.Electronic Delivery and Acceptance. The Company, in its sole discretion, may decide to deliver any documents related to Stock Appreciation Rights awarded under the Plan or future Stock Appreciation Rights that may be awarded under the Plan by electronic means. The Grantee hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through any on‑line or electronic system established and maintained by the Company or another third party designated by the Company.

24.Captions. The captions provided herein are for convenience only and are not to serve as a basis for the interpretation or construction of this Agreement.

25.Agreement Severable. In the event that any provision in this Agreement shall be held invalid or unenforceable, such provision shall be severable from, and such invalidity or unenforceability shall not be construed to have any effect on, the remaining provisions of this Agreement.

26.Modifications to the Agreement; Clawback. This Agreement constitutes the entire understanding of the parties on the subjects covered. The Grantee expressly warrants that he or she is not executing this Agreement in reliance on any promises, representations, or inducements other than those contained herein. Except as otherwise provided herein, modifications to this Agreement or the Plan can be made only in an express written contract executed by a duly authorized officer of the Company. Notwithstanding anything to the contrary in the Plan or this Agreement, the Company reserves the right to revise this Agreement as it deems necessary or advisable, in its sole discretion and without the consent of the Grantee, to avoid imposition of any additional tax or income recognition under Section 409A of the Internal Revenue Code of 1986, as amended (“Section 409A”), prior to the actual payment of Shares pursuant to this SAR, provided that such revision would not materially reduce the economic benefits provided or intended to be provided under this Agreement. In no event will the Company pay or reimburse the Grantee for any taxes or other costs imposed on account of Section 409A. Additionally, this Agreement and the award made hereunder shall be subject to any clawback policy which the Company may adopt from time to time as required by law or otherwise.

27.Amendment, Suspension, Termination. By accepting this SAR, the Grantee expressly warrants that he or she has received an SAR to purchase stock under the Plan, and has received, read and understood a description of the Plan. The Grantee understands that the Plan is discretionary in nature and may be modified, suspended or terminated by the Company at any time.

28.Defined Terms: Capitalized terms used in this Agreement without definition will have the meanings provided for in the Plan. When used in this Agreement, the following capitalized terms will have the following meanings:

“Continued Service” means that your employment relationship is not interrupted or terminated by you, the Company, or any parent or Subsidiary of the Company. Your employment relationship will not be considered interrupted in the case of: (i) any leave of absence approved in accordance with the Company’s written personnel policies, including sick leave, family leave, military leave, or any other personal leave; or (ii) transfers between locations of the Company or between the Company and any parent, Subsidiary or successor; provided, however, that, unless otherwise provided in the Company’s written personnel policies, in this Agreement or under applicable laws, rules or regulations, or unless the Committee has otherwise expressly provided for different treatment with respect to this Agreement, (x) no such leave may exceed ninety (90) days, and (y) any vesting shall cease on the ninety-first (91^st) consecutive date of any leave of absence during which your employment relationship is deemed to continue and will not recommence until such date, if any, upon which you resume service with the Company, its parent, Subsidiary or successor. If you resume such service in accordance with the terms of the Company’s military leave policy, upon resumption of service you will be given vesting credit for the full duration of your leave of absence. Continuous employment will be deemed interrupted and terminated for an Employee if the Grantee’s weekly work hours change from full time to part time. Part-time status for the purpose of vesting continuation will be determined in accordance with policies adopted by the Company from time to time, which policies, if any, shall supersede the determination of part-time status set forth in the Company’s posted “employee status definitions”.

“Disability” means total and permanent disability as defined in Section 22(e)(3) of the Code.

“Retirement” means termination of your employment in accordance with the Company’s retirement policies, as in effect from time to time, if on the date of such termination (i) you are at least 55 years old and your Continued Service has extended for at least five (5) years, and (ii) the number of full years in your age and your number of full years of Continued Service total at least 65. By way of illustration, if you terminate your employment in accordance with the Company’s retirement policies on your 63rd birthday after six (6) years of Continued Service, your total would be 69 and your termination would be treated as a Retirement; if your Continued Service had extended for only four (4) years, your total would be 67 but your termination would not be treated as a Retirement since you would not have met the minimum of five (5) years of Continued Service.

Your acceptance of this grant indicates your agreement and understanding that this grant is subject to all of the terms and conditions contained in the Plan and this Agreement, which includes the notice of grant. Your acceptance of this grant indicates your agreement and understanding that this grant is subject to all of the terms and conditions contained in the Plan and this Award Agreement, which includes the notice of grant and this Agreement.

As a condition to receiving this Stock Appreciation Right grant and in consideration of such grant, you accept and agree to abide by the Agreement Regarding Certain Conditions of Employment provided to you in connection with such grant, including but not limited to the confidentiality and post-employment restrictions on competition set forth therein.  You hereby ratify, affirm and consent to those terms and conditions. 

-1-

EX-10.2

GARTNER, INC.

2014 LONG-TERM INCENTIVE PLAN

PERFORMANCE STOCK UNIT AGREEMENT

Gartner, Inc. (the “Company”) hereby grants you (or the “Grantee”) the number of performance stock units indicated in the notice of grant (a “PSU” or the “PSUs”) under the Company’s 2014 Long-Term Incentive Plan (the “Plan”) (this type of Award is referred to as Performance Shares under the Plan). The date of this Agreement is February 8, 2018 (the “Grant Date”). Subject to the provisions of Appendix A (attached hereto) and of the Plan, the principal features of this Performance Stock Unit grant are as follows:

Target Number of PSUs: As provided in the notice of grant, subject to adjustment as provided under Performance Adjustment below.

Performance Adjustment:

The number of PSUs eligible to vest will be adjusted in accordance with the following schedule, based upon Total Contract Value (a Performance Objective as defined in the Plan) at December 31, 2018, measured on a foreign exchange neutral basis.

“Total Contract Value” represents the annualized value of all subscription contracts in effect at a specific point in time. It includes the value attributable to all of our subscription–based research products that recognize revenue on a ratable basis, as well as the value allocated to tickets for Company events that are included with a subscription–based research product.

Adjustment is linear between each level of Total Contract Value noted above. After achievement of 2018 Total Contract Value is finally determined, if 2018 Total Contract Value is less than the Minimum specified above, then all PSUs will be immediately forfeited. Eligibility for vesting of PSUs also is subject to the note below.

The 2018 Total Contract Value goals in the table will be adjusted by the Compensation Committee as the Compensation Committee determines to be necessary or appropriate to reflect and be consistent with the actual or expected effect of any merger, acquisition and divestiture activity.  The Compensation Committee will have sole discretionary authority to make these adjustments.

Vesting Schedule:

Twenty-five percent (25%) of the PSUs eligible to vest (if any, as determined in the prior subsection) shall vest on each of the first four anniversaries of the date hereof, or February 8, 2019, 2020, 2021 and 2022, subject to Grantee’s Continued Service through each such date.

APPENDIX A

TERMS AND CONDITIONS OF PERFORMANCE STOCK UNITS

1.Grant of PSUs. The Company hereby grants to the Grantee under the Plan the number of Performance Stock Units (“PSUs”) indicated in the notice of grant, subject to all of the terms and conditions in this Agreement and the Plan; provided, however, that notwithstanding any contrary provision of this Agreement (including, but not limited to, the notice of grant), should Grantee’s Continued Service end at any time during the calendar year in which the grant was made, then the target number of PSUs so granted will be reduced to equal the percentage of days in that year in which the Grantee was in Continued Service (i.e., for the avoidance of doubt, the target number of PSUs will equal the number specified in the notice of grant, multiplied by the number of days from January 1 for which the Grantee was in Continued Service, divided by 365). (This type of Award is referred to as Performance Shares under the Plan.)

2.Payment of Purchase Price. When the PSUs are paid out to the Grantee, the purchase price will be deemed paid by the Grantee for each Performance Stock Unit through the past services rendered by the Grantee, and will be subject to the appropriate tax withholdings.

3.Company’s Obligation to Pay. Each PSU has a value equal to the Fair Market Value of a Share on the date of grant. Unless and until the PSUs have vested in the manner set forth in Paragraphs 4 or 5, the Grantee will have no right to payment of such PSUs. Prior to actual payment of any vested PSUs, such PSUs will represent an unfunded and unsecured obligation of the Company. Payment of any vested PSUs will be made in Shares only. In no event will the Grantee be permitted, directly or indirectly, to specify the taxable year of the payment of any PSUs payable under the Agreement.

4.Vesting Schedule. Except as otherwise provided in this Agreement, the PSUs awarded by this Agreement are scheduled to vest in accordance with the vesting schedule set forth in the notice of grant. PSUs scheduled to vest on a particular date actually will vest only if the Grantee remains in Continued Service through such date. Should the Grantee’s Continued Service end at any time (the “Termination Date”), any unvested PSUs will be immediately cancelled; provided, however, that if termination of Continued Service results from the Grantee’s death, Disability or Retirement, then any unvested PSUs shall vest as follows:

(a) If termination of Continued Service is due to the Grantee’s death or Disability, the unvested portion of this PSU shall vest in full on the Termination Date;

(b) If termination of Continued Service is due to Retirement and the Grantee is less than age 60, the unvested portion of this PSU that would have vested by its terms within twelve (12) months from the Termination Date shall continue to vest as set forth in the notice of grant despite the termination of service;

(c) If termination of Continued Service is due to Retirement and the Grantee is age 60 (but less than age 61) on the Termination Date, the unvested portion of this PSU that would have vested by its terms within twenty-four (24) months from the Termination Date shall continue to vest as set forth in the notice of grant despite the termination of service;

(d) If termination of Continued Service is due to Retirement and the Grantee is age 61 (but less than age 62) on the Termination Date, the unvested portion of this PSU that would have vested by its terms within thirty-six (36) months from the Termination Date shall continue to vest as set forth in the notice of grant despite the termination of service; and

(e) If termination of Continued Service is due to Retirement and the Grantee is age 62 or older on the Termination Date, the entire unvested portion of this PSU shall continue to vest as set forth in the notice of grant despite the termination of Service;

providedfurther, however, that (i) Grantee is in full compliance with all the terms of this Agreement at the time of vesting and (ii) in the case of PSUs as to which the Performance Adjustment referred to in the notice of grant has not been made at the Termination Date, the PSUs that will be deemed vested on the Termination Date or otherwise pursuant to this Paragraph 4 shall be determined, and shall vest, when such Performance Adjustment has occurred.

5.Committee Discretion. The Committee, in its discretion, may accelerate the vesting of the balance, or some lesser portion of the balance, of the PSUs at any time, subject to the terms of the Plan. If so accelerated, such PSUs will be considered as having vested as of the date specified by the Committee. If the Committee, in its discretion, accelerates the vesting of the balance, or some lesser portion of the balance, of the PSUs and the PSUs are “deferred compensation” within the meaning of Section 409A, the payment of such accelerated PSUs nevertheless shall be made at the same time or times as if such PSUs had vested in accordance with the vesting schedule set forth in the notice of grant (whether or not the Grantee remains in Continued Service through such date(s)). The immediately preceding sentence may be superseded in a future agreement or amendment to this Award Agreement only by direct and specific reference to the sentence. Notwithstanding the foregoing, if such PSUs that are “deferred compensation” within the meaning of Section 409A are accelerated in connection with the Grantee’s termination of Continued Service (other than due to death), the PSUs that vest on account of the Grantee’s termination of Continued Service will not be considered due or payable until the Grantee has a “separation from service” within the meaning of Section 409A. In addition, if the Grantee is a “specified employee” within the meaning of Section 409A at the time of the Grantee’s separation from service, then any such accelerated PSUs otherwise payable within the six (6) month period following the Grantee’s separation from service instead will be paid on the date that is six (6) months and one (1) day following the date of the Grantee’s separation from service, unless the Grantee dies following his or her separation from service, in which case, the accelerated PSUs will be paid to the Grantee’s estate as soon as practicable following his or her death, subject to Paragraph 9. Thereafter, such PSUs shall continue to be paid in accordance with the vesting schedule set forth on the first page of this Agreement. Each payment payable to a U.S. taxpayer under this Agreement is intended to constitute a separate payment for purposes of Treasury Regulation Section 1.409A-2(b)(2). For purposes of this Agreement, “Section 409A” means Section 409A of the U.S. Internal Revenue Code of 1986, as amended, and any final Treasury Regulations and other Internal Revenue Service guidance thereunder, as each may be amended from time to time.

6.Payment after Vesting. Any PSUs that vest in accordance with Paragraph 4 will be released to the Grantee (or in the event of the Grantee’s death, to his or her estate) in Shares as soon as practicable following the date of vesting, subject to Paragraph 9, but in no event later than the applicable two and one-half (2-½) month period of the “short-term deferral” rule set forth in the Section 1.409A-1(b)(4) of the Treasury Regulations issued under Section 409A. Notwithstanding the foregoing, if the PSUs are “deferred compensation” within the meaning of Section 409A, the vested PSUs will be released to the Grantee (or in the event of the Grantee’s death, to his or her estate) in Shares as soon as practicable following the date of vesting, subject to Paragraph 9, but in no event later than the end of the calendar year that includes the date of vesting or, if later, the fifteen (15th) day of the third (3rd) calendar month following the date of vesting (provided that the Grantee will not be permitted, directly or indirectly, to designate the taxable year of the payment). Further, if some or all of the PSUs that are “deferred compensation” within the meaning of Section 409A vest on account of the Grantee’s termination of Continued Service (other than due to death) in accordance with Paragraph 4, the PSUs that vest on account of the Grantee’s termination of Continued Service will not be considered due or payable until the Grantee has a “separation from service” within the meaning of Section 409A. In addition, if the Grantee is a “specified employee” within the meaning of Section 409A at the time of the Grantee’s separation from service (other than due to death), then any accelerated PSUs will be paid to the Grantee no earlier than six (6) months and one (1) day following the date of the Grantee’s separation from service unless the Grantee dies following his or her separation from service, in which case, the PSUs will be paid to the Grantee’s estate as soon as practicable following his or her death, subject to Paragraph 9. Any PSUs that vest in accordance with Paragraph 5 will be paid to the Grantee (or in the event of the Grantee’s death, to his or her estate) in Shares in accordance with the provision of such paragraph, subject to Paragraph 9.

7.Forfeiture. Notwithstanding any contrary provision of this Agreement, the balance of the PSUs that have not vested pursuant to Paragraphs 4 or 5 at the time the Grantee ceases to be in Continued Service will be forfeited and automatically transferred to and reacquired by the Company at no cost to the Company. The Grantee shall not be entitled to a refund of any of the price paid for the PSUs forfeited to the Company pursuant to this Paragraph 7.

8.Death of Grantee. Any distribution or delivery to be made to the Grantee under this Agreement will, if the Grantee is then deceased, be made to the administrator or executor of the Grantee’s estate (or such other person to whom the PSUs are transferred pursuant to the Grantee’s will or in accordance with the laws of descent and distribution). Any such transferee must furnish the Company (a) written notice of his or her status as a transferee, (b) evidence satisfactory to the Company to establish the validity of the transfer of these PSUs and compliance with any laws or regulations pertaining to such transfer, and (c) written acceptance of the terms and conditions of this Performance Stock Unit grant as set forth in this Agreement.

9.Withholding of Taxes. When the Shares are issued as payment for vested PSUs, the Grantee will recognize immediate U.S. taxable income if the Grantee is a U.S. taxpayer. If the Grantee is a non-U.S. taxpayer, the Grantee may be subject to applicable taxes in his or her jurisdiction. The Company (or the employing parent of the Company or Subsidiary) will withhold a portion of the Shares otherwise issuable in payment for vested PSUs that have an aggregate market value sufficient to pay the minimum federal, state and local income, employment and any other applicable taxes required to be withheld by the Company (or the employing parent of the Company or Subsidiary) with respect to the Shares. No fractional Shares will be withheld or issued pursuant to the grant of PSUs and the issuance of Shares thereunder. The Company (or the employing parent of the Company or Subsidiary) may instead, in its discretion, withhold an amount necessary to pay the applicable taxes from the Grantee’s paycheck, with no withholding of Shares. In the event the withholding requirements are not satisfied through the withholding of Shares (or, through the Grantee’s paycheck, as indicated above), no payment will be made to the Grantee (or his or her estate) for PSUs unless and until satisfactory arrangements (as determined by the Committee) have been made by the Grantee with respect to the payment of any income and other taxes which the Company determines must be withheld or collected with respect to such PSUs. By accepting this Award, the Grantee expressly consents to the withholding of Shares and to any cash or Share withholding as provided for in this Paragraph 9. All income and other taxes related to the Performance Stock Unit award and any Shares delivered in payment thereof are the sole responsibility of the Grantee. In no event will the Company reimburse the Grantee for any taxes or other costs that may be imposed on the Grantee as result of Section 409A.

10.Rights as Stockholder. Neither the Grantee nor any person claiming under or through the Grantee shall have any of the rights or privileges of a stockholder of the Company in respect of any Shares deliverable hereunder unless and until certificates representing such Shares (which may be in book entry form) shall have been issued, recorded on the records of the Company or its transfer agents or registrars, and delivered to the Grantee (including through electronic delivery to a brokerage account). Notwithstanding any contrary provisions of this Agreement, any quarterly or other regular, periodic dividends or distributions (as determined by the Company) paid on Shares will accrue with respect to (i) unvested PSUs and (ii) PSUs that are vested but unpaid, and no such dividends or other distributions will be paid on PSUs nor PSUs that are vested but unpaid pursuant to Paragraph 5, and in each case will be subject to the same forfeiture provisions (if any), and be paid out at the same time or time(s), as the underlying PSUs on which such dividends or other distributions have accrued. After such issuance, recordation and delivery, the Grantee will have all the rights of a stockholder of the Company with respect to voting such Shares and receipt of dividends and distributions on such Shares.

11.No Effect on Employment or Service. The Grantee’s employment with the Company and any parent of the Company or Subsidiary is on an at-will basis only, subject to the provisions of applicable law. Accordingly, subject to any written, express employment contract with the Grantee, nothing in this Agreement or the Plan shall confer upon the Grantee any right to continue to be employed by the Company or any parent of the Company or Subsidiary or shall interfere with or restrict in any way the rights of the Company or the employing parent of the Company or Subsidiary, which are hereby expressly reserved, to terminate the employment of the Grantee at any time for any reason whatsoever, with or without good cause. Such reservation of rights can be modified only in an express written contract executed by a duly authorized officer of the Company or the parent of the Company or Subsidiary employing the Grantee.

12.Address for Notices. Any notice to be given to the Company under the terms of this Agreement shall be addressed to the Company, in care of its Secretary at the Company’s headquarters, P.O. Box 10212, 56 Top Gallant Road, Stamford, CT 06902-7700, or at such other address as the Company may hereafter designate in writing.

13.Grant is Not Transferable. Except to the limited extent provided in Paragraph 8 above, this grant and the rights and privileges conferred hereby shall not be transferred, assigned, pledged or hypothecated in any way (whether by operation of law or otherwise) and shall not be subject to sale under execution, attachment or similar process. Upon any attempt to transfer, assign, pledge, hypothecate or otherwise dispose of this grant, or of any right or privilege conferred hereby, or upon any attempted sale under any execution, attachment or similar process, this grant and the rights and privileges conferred hereby immediately shall become null and void. Notwithstanding the preceding, the Grantee may transfer (not for consideration and for bona fide estate planning purposes) the Performance Stock Units awarded under this Agreement to a revocable estate planning trust that is established solely for the benefit of Grantee and his or her immediate family. Any such transfer will be permitted only if it is in compliance with such rules and procedures as the Company may establish from time to time. Among other things, Grantee must acknowledge and agree that (a) for U.S. income tax purposes, all taxable income from the Performance Stock Units will be reported to Grantee alone, (b) if Grantee proposes to change the nature or character of the transferee trust, Grantee first must inform the Company and the Company may require that the Performance Stock Units be transferred back to Grantee alone, and (c) no additional other or further transfers of the Performance Stock Units will be permitted under any circumstance.

14.Non-Competition. (a)(i) “Competitive Acts” shall mean: (A) the development, production, marketing or selling of (or assisting others to develop, produce, market or sell): (x) syndicated research that competes with the Company or its subsidiaries; or (y) a product or service which is competitive with the existing or planned products or services of the Company with which Grantee was involved in or managed at any time during the last twenty-four (24) months of the Employment; and (B) the direct or indirect provision of services to, or solicitation of, the Company’s clients or known prospects with whom Grantee had contact, managed, or became aware of as a result of being employed by the Company, for the purposes of developing, producing, marketing or selling such competitive products or services.

(ii)    Grantee understands and agrees that the Company’s business is global in nature and that its clients are located throughout the world; therefore, a territorial limitation on the non-competition covenants set forth in Paragraph 14 would not allow the Company to adequately protect its legitimate business interests, and the absence of such a limitation is entirely reasonable under these circumstances. In addition, Grantee agrees that the provisions of this Paragraph 14 are reasonable to protect and preserve the Company’s legitimate business interests, including the protection of the Company’s Confidential Information and the Company’s substantial investment made to develop and retain its Confidential Information, client base, accounts and related goodwill.

(iii)    The Company may, in its sole discretion, waive any portion of the Grantee’s obligations contained in Paragraph 14. No such waiver shall be valid unless directly provided to Grantee, in writing, by the Company’s General Counsel or his/her designee.

(b)    Grantee agrees that, for a period of two (2) years following the termination of his or her employment with the Company, for any reason whatsoever, the Grantee will not, on his or her own behalf or on behalf of any other person or entity (whether as a consultant, analyst, sales person, independent contractor, independent business venturer, partner, member, employee or otherwise), directly or indirectly: (i) engage in any Competitive Acts; and/or (ii) entice, encourage, cause or invite any of the Company’s clients, known prospects, and vendors to discontinue, diminish, or otherwise adversely modify the business done with the Company, or otherwise interfere with the relationship between the Company and its clients, known prospects, and vendors.

(c)    Grantee agrees that, in addition to any and all other remedies available to the Company (at law, in equity, or as otherwise set forth in this Agreement), the Company shall be entitled to liquidated damages for any violation of Paragraph 14 in an amount equal to: (i) the final twelve (12) months’ salary, commissions, and bonus paid to the Grantee; and (ii) an additional amount equal to the aggregate dollar value of shares underlying any stock appreciation rights, performance stock units, and/or restricted stock units that vested (or, in the case of stock appreciation rights, vested and Grantee exercised) at any time during the twelve (12) months prior to separating from the Company. The dollar value of each such share shall be equal to the closing price of Gartner stock on the date of grant of the applicable stock appreciation right, performance stock unit or restricted stock unit. Grantee agrees that the liquidated damages set forth herein are a reasonable approximation of the damages experienced by the Company for a violation of Paragraph 14, and are not to be deemed a penalty of any kind.

(d)    Grantee acknowledges that the time, geographic and scope limitations of the non-competition obligation set forth herein are fair and reasonable in all respects, and that Grantee will not be precluded from gainful employment if obligated to comply with the provisions hereof. To the extent a court of appropriate jurisdiction finds the duration and/or geographic scope of the non-competition or non-solicitation restrictions to be unenforceable under applicable law, then it is the intention of the parties that such restriction be enforced to the fullest extent which the court deems reasonable. In the event of Grantee’s breach or violation of this Paragraph 14, or good faith allegation by the Company of such breach or violation, the restricted periods set forth in this Paragraph 14 shall be tolled until such breach or violation, or allegation thereof, has been duly cured or resolved.

(e)    During the restricted period set forth above, the Grantee will notify (in writing and not less than 72 hours in advance) the Company’s General Counsel if he or she intends to become an employee or other service provider of any entity other than the Company (for example, but not by way of limitation, as an employee, consultant, analyst, sales person, independent contractor, agent, independent business venturer, partner or member).

15.Non‑Solicitation and No‑Hire. The Grantee further agrees that, for a period of two (2) years following the termination of his or her employment with the Company, for any reason whatsoever, the Grantee will not, directly or indirectly solicit, entice, or recruit employees of the Company to leave its employ, or offer or cause to be offered employment to any person who was employed by the Company at any time during the twelve (12) months prior to the termination of Grantee’s employment with the Company.General mass solicitations of employment that are not directed at the Company or any employee(s) of the Company shall not be prohibited by this Paragraph 15.

16.Successors and Assigns. The Company may assign any of its rights under the Agreement to single or multiple assignees, and this Agreement shall inure to the benefit of the successors and assigns of the Company. The rights and obligations of the Grantee under this Agreement may be assigned only with the prior written consent of the Company.

17.Restrictions on Sale of Securities. The Shares issued as payment for vested PSUs awarded under this Agreement will be registered under the federal securities laws and will be freely tradable upon receipt. However, the Grantee’s subsequent sale of the Shares will be subject to any market blackout-period that may be imposed by the Company and must comply with the Company’s insider trading policies, and any other applicable securities laws.

18.Binding Agreement. Subject to the limitation on the transferability of this grant contained herein, this Agreement shall be binding upon and inure to the benefit of the heirs, legatees, legal representatives, successors and assigns of the parties hereto.

19.Conditions for Issuance of Stock. The shares of stock deliverable to the Grantee may be either previously authorized but unissued shares or issued shares which have been reacquired by the Company. The Company shall not be required to transfer on its books or list in street name with a brokerage company or otherwise issue any certificate or certificates for Shares hereunder prior to fulfillment of all the following conditions: (a) the admission of such Shares to listing on all stock exchanges on which such class of stock is then listed; and (b) the completion of any registration or other qualification of such Shares under any state or federal law or under the rulings or regulations of the Securities and Exchange Commission or any other governmental regulatory body, which the Committee shall, in its absolute discretion, deem necessary or advisable; and (c) the obtaining of any approval or other clearance from any state or federal governmental agency, which the Committee shall, in its absolute discretion, determine to be necessary or advisable; and (d) the lapse of such reasonable period of time following the date of vesting of the PSUs as the Committee may establish from time to time for reasons of administrative convenience.

20.Plan Governs. This Agreement is subject to all terms and provisions of the Plan. In the event of a conflict between one or more provisions of this Agreement and one or more provisions of the Plan, the provisions of the Plan shall govern. Capitalized terms used and not defined in this Agreement shall have the meaning set forth in the Plan.

21.Committee Authority. The Committee shall have the power to interpret the Plan and this Agreement and to adopt such rules for the administration, interpretation and application of the Plan as are consistent therewith and to interpret or revoke any such rules (including, but not limited to, the determination of whether or not any PSUs have vested). All actions taken and all interpretations and determinations made by the Committee shall be final and binding upon the Grantee, the Company and all other persons, and shall be given the maximum deference permitted by law. No member of the Committee shall be personally liable for any action, determination or interpretation made in good faith with respect to the Plan or this Agreement.

22.Electronic Delivery and Acceptance. The Company, in its sole discretion, may decide to deliver any documents related to Performance Stock Units awarded under the Plan or future Performance Stock Units that may be awarded under the Plan by electronic means. The Grantee hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through any on‑line or electronic system established and maintained by the Company or another third party designated by the Company.

23.Captions. Captions provided herein are for convenience only and are not to serve as a basis for interpretation or construction of this Agreement.

24.Agreement Severable. In the event that any provision in this Agreement shall be held invalid or unenforceable, such provision shall be severable from, and such invalidity or unenforceability shall not be construed to have any effect on, the remaining provisions of this Agreement.

25.Entire Agreement. This Agreement constitutes the entire understanding of the parties on the subjects covered. The Grantee expressly warrants that he or she is not executing this Agreement in reliance on any promises, representations, or inducements other than those contained herein.

26.Modifications to the Agreement; Clawback. This Agreement constitutes the entire understanding of the parties on the subjects covered. The Grantee expressly warrants that he or she is not accepting this Agreement in reliance on any promises, representations, or inducements other than those contained herein. Modifications to this Agreement or the Plan can be made only in an express written contract executed by a duly authorized officer of the Company. Notwithstanding anything to the contrary in the Plan or this Agreement, the Company reserves the right to revise this Agreement as it deems necessary or advisable, in its sole discretion and without the consent of the Grantee, to avoid imposition of any additional tax or income recognition under Section 409A prior to the actual payment of Shares pursuant to this award of PSUs, provided that such revision would not materially reduce the economic benefits provided or intended to be provided under this Agreement. Additionally, this Agreement and the award made hereunder shall be subject to any clawback policy which the Company may adopt from time to time as required by law or otherwise.

27.Amendment, Suspension or Termination of the Plan. By accepting this award, the Grantee expressly warrants that he or she has received an award under the Plan, and has received, read and understood a description of the Plan. The Grantee understands that the Plan is discretionary in nature and may be modified, suspended or terminated by the Company at any time.

28.Governing Law. This grant of PSUs shall be governed by, and construed in accordance with, the laws of the State of Connecticut, without regard to its conflict of laws provisions.

29.Defined Terms: Capitalized terms used in this Agreement without definition will have the meanings provided for in the Plan. When used in this Agreement, the following capitalized terms will have the following meanings:

“Continued Service” means that your employment relationship is not interrupted or terminated by you, the Company, or any parent or Subsidiary of the Company. Your employment relationship will not be considered interrupted in the case of: (i) any leave of absence approved in accordance with the Company’s written personnel policies, including sick leave, family leave, military leave, or any other personal leave; or (ii) transfers between locations of the Company or between the Company and any parent, Subsidiary or successor; provided, however, that, unless otherwise provided in the Company’s written personnel policies, in this Agreement or under applicable laws, rules or regulations, or unless the Committee has otherwise expressly provided for different treatment with respect to this Agreement, (x) no such leave may exceed ninety (90) days, and (y) any vesting shall cease on the ninety-first (91^st) consecutive date of any leave of absence during which your employment relationship is deemed to continue and will not recommence until such date, if any, upon which you resume service with the Company, its parent, Subsidiary or successor. If you resume such service in accordance with the terms of the Company’s military leave policy, upon resumption of service you will be given vesting credit for the full duration of your leave of absence. Continuous employment will be deemed interrupted and terminated for an Employee if the Grantee’s weekly work hours change from full time to part time. Part-time status for the purpose of vesting continuation will be determined in accordance with policies adopted by the Company from time to time, which policies, if any, shall supersede the determination of part-time status set forth in the Company’s posted “employee status definitions”.

“Disability” means total and permanent disability as defined in Section 22(e)(3) of the Code.

“Retirement” means termination of your employment in accordance with the Company’s retirement policies, as in effect from time to time, if on the date of such termination (i) you are at least 55 years old and your Continued Service has extended for at least five (5) years, and (ii) the number of full years in your age and your number of full years of Continued Service total at least 65. By way of illustration, if you terminate your employment in accordance with the Company’s retirement policies on your 63rd birthday after six (6) years of Continued Service, your total would be 69 and your termination would be treated as a Retirement; if your Continued Service had extended for only four (4) years, your total would be 67 but your termination would not be treated as a Retirement since you would not have met the minimum of five (5) years of Continued Service.

Your acceptance of this grant indicates your agreement and understanding that this grant is subject to all of the terms and conditions contained in the Plan and this Award Agreement, which includes the notice of grant and this Agreement.

As a condition to receiving this Performance Stock Unit grant and in consideration of such grant, you accept and agree to abide by the Agreement Regarding Certain Conditions of Employment provided to you in connection with such grant, including but not limited to the confidentiality and post-employment restrictions on competition set forth therein.  You hereby ratify, affirm and consent to those terms and conditions. 

1

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Eugene A. Hall, certify that:

(1) I have reviewed this Quarterly Report on Form 10-Q for the quarter ended March 31, 2018, of Gartner, Inc.;

(2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

(3) Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

(4) The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d -15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

(5) The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors:

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

May 8, 2018

/s/ Eugene A. Hall

Eugene A. Hall

Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Craig W. Safian, certify that:

(1) I have reviewed this Quarterly Report on Form 10-Q for the quarter ended March 31, 2018, of Gartner, Inc.;

(2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

(3) Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

(4) The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d -15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

(5) The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors:

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

May 8, 2018

/s/ Craig W. Safian

Craig W. Safian

Chief Financial Officer

EX-32

Exhibit 32

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Gartner, Inc. (the “Company”) on Form 10-Q for the quarter ended March 31, 2018, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), as Chief Executive Officer of the Company and Chief Financial Officer of the Company, each hereby certifies, pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Eugene A. Hall

Name: Eugene A. Hall

Title:   Chief Executive Officer

Date:   May 8, 2018

/s/ Craig W. Safian

Name: Craig W. Safian

Title:   Chief Financial Officer

Date:   May 8, 2018

A signed original of this written statement required by Section 906 has been provided to Gartner, Inc. and will be retained by Gartner, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 30, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	GARTNER INC
Entity Central Index Key	0000749251
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding (in shares)		91,240,213

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 189,979	$ 538,908
Fees receivable, net of allowances of $7,100 and $12,700 respectively	1,134,964	1,176,843
Deferred commissions	207,161	205,260
Prepaid expenses and other current assets	175,204	124,632
Assets held-for-sale	603,354	542,965
Total current assets	2,310,662	2,588,608
Property, equipment and leasehold improvements, net	223,086	221,507
Goodwill	2,956,642	2,987,294
Intangible assets, net	1,247,771	1,292,022
Other assets	176,867	193,742
Total Assets	6,915,028	7,283,173
Current liabilities:
Accounts payable and accrued liabilities	532,538	666,821
Deferred revenues	1,719,637	1,630,198
Current portion of long-term debt	789,724	379,721
Liabilities held-for-sale	143,957	145,845
Total current liabilities	3,185,856	2,822,585
Long-term debt, net of deferred financing fees	2,186,061	2,899,124
Other liabilities	555,540	577,999
Total Liabilities	5,927,457	6,299,708
Stockholders’ Equity
Preferred stock, $.01 par value, 5,000,000 shares authorized; none issued or outstanding	0	0
Common stock, $.0005 par value, 250,000,000 shares authorized; 163,602,067 shares issued for both periods	82	82
Additional paid-in capital	1,788,045	1,761,383
Accumulated other comprehensive income, net	32,225	1,508
Accumulated earnings	1,613,980	1,647,284
Treasury stock, at cost, 72,391,175 and 72,779,205 common shares, respectively	(2,446,761)	(2,426,792)
Total Stockholders’ Equity	987,571	983,465
Total Liabilities and Stockholders’ Equity	$ 6,915,028	$ 7,283,173

XML

Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 7,100	$ 12,700
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)	72,391,175	72,779,205

XML

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Research	$ 763,924	$ 511,306
Events	46,087	35,269
Consulting	82,896	78,594
Talent Assessment & Other	70,658	0
Total revenues	963,565	625,169
Costs and expenses:
Cost of services and product development	357,209	237,609
Selling, general and administrative	487,745	304,244
Depreciation	16,410	10,240
Amortization of intangibles	51,646	6,290
Acquisition and integration charges	59,266	13,272
Total costs and expenses	972,276	571,655
Operating (loss) income	(8,711)	53,514
Interest expense, net	(35,059)	(5,906)
Other income, net	899	889
(Loss) income before income taxes	(42,871)	48,497
(Benefit) provision for income taxes	(23,284)	12,064
Net (loss) income	$ (19,587)	$ 36,433
Net (loss) income per share:
Basic (in dollars per share)	$ (0.22)	$ 0.44
Diluted (in dollars per share)	$ (0.22)	$ 0.43
Weighted average shares outstanding:
Basic (in shares)	91,005	82,835
Diluted (in shares)	91,005	84,095

XML

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (19,587)	$ 36,433
Other comprehensive income, net of tax:
Foreign currency translation adjustments	20,547	4,371
Interest rate swaps – net change in deferred gain or loss	10,114	(2,568)
Pension plans – net change in deferred actuarial loss	56	48
Other comprehensive income, net of tax	30,717	1,851
Comprehensive income	$ 11,130	$ 38,284

XML

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities:
Net (loss) income	$ (19,587)	$ 36,433
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Depreciation and amortization	68,056	16,530
Stock-based compensation expense	30,958	22,576
Deferred taxes	(39,175)	(11,998)
Amortization and write-off of deferred financing fees	1,868	468
Changes in assets and liabilities, net of acquisitions:
Fees receivable, net	56,771	(57,919)
Deferred commissions	(512)	3,002
Prepaid expenses and other current assets	(53,851)	(5,315)
Other assets	14,421	(16,730)
Deferred revenues	76,854	92,373
Accounts payable, accrued, and other liabilities	(133,079)	(109,025)
Cash provided by (used in) operating activities	2,724	(29,605)
Investing activities:
Additions to property, equipment and leasehold improvements	(17,679)	(10,700)
Acquisitions - cash paid (net of cash acquired)	0	(111,165)
Other	1,000	0
Cash used in investing activities	(16,679)	(121,865)
Financing activities:
Proceeds from employee stock purchase plan	4,124	3,022
Proceeds from borrowings	0	955,000
Payments for deferred financing fees	0	(18,773)
Payments on borrowings	(304,813)	0
Purchases of treasury stock	(28,394)	(21,978)
Cash (used in) provided by financing activities	(329,083)	917,271
Net (decrease) increase in cash and cash equivalents and restricted cash	(343,038)	765,801
Effects of exchange rates on cash and cash equivalents and restricted cash	3,610	6,007
Cash and cash equivalents and restricted cash, beginning of period	227,630	1,271,162
Cash and cash equivalents and restricted cash, end of period	$ 567,058	$ 499,354

XML

Business and Basis of Presentation

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Business and Basis of Presentation

Business and Basis of Presentation

Business. Gartner, Inc. (NYSE: IT) is the world’s leading research and advisory company and a member of the S&P 500. We equip business leaders with indispensable insights, advice and tools to achieve their mission-critical priorities and build the successful organizations of tomorrow. We believe that we have an unmatched combination of expert-led, practitioner-sourced and data-driven research that steers clients toward the right decisions on the issues that matter most. We're trusted as an objective resource and critical partner by more than 15,000 organizations in more than 100 countries - across all major functions, in every industry and enterprise size. To learn more about how we help decision makers fuel the future of business, visit gartner.com.

Gartner delivers its principal products and services globally through four business segments: Research, Events, Consulting and Talent Assessment & Other. Our revenues by business segment are discussed below under the heading "Revenue Recognition." When used in these notes, the terms “Gartner,” “Company,” “we,” “us,” or “our” refer to Gartner, Inc. and its consolidated subsidiaries.

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 the Financial Accounting Standards Board ("FASB") Accounting Standards Codification (“ASC”) Topic 270 for interim financial information and with the applicable instructions of the 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 filed in its Annual Report on Form 10-K for the year ended December 31, 2017. 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 months ended March 31, 2018 may not be indicative of the results of operations for the remainder of 2018 or beyond.

Principles of consolidation. The accompanying interim condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant 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 our estimates and actual results could be material and would be reflected in the Company’s consolidated financial statements in future periods.

Adoption of new accounting standards. The Company adopted the accounting standards described below during the three months ended March 31, 2018:

Stock Compensation Award Modifications — On January 1, 2018, the Company adopted ASU No. 2017-09, "Compensation—Stock Compensation - Scope of Modification Accounting" ("ASU No. 2017-09"). ASU No. 2017-09 provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. The adoption of ASU No. 2017-09 had no impact on the Company's consolidated financial statements.

Retirement Benefits Cost Presentation — On January 1, 2018, the Company adopted ASU No. 2017-07, "Compensation—Retirement Benefits" ("ASU No. 2017-07"). ASU No. 2017-07 improves the reporting of net benefit cost in the financial statements, and provides additional guidance on the presentation of net benefit cost in the income statement and clarifies the components eligible for capitalization. The adoption of ASU No. 2017-07 had an immaterial impact on the classification of benefit expense on the Company's Condensed Consolidated Statements of Operations.

Partial Sales of Non-financial Assets — On January 1, 2018, the Company adopted ASU No. 2017-05, "Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Non-financial Assets" ("ASU No. 2017-05"). ASU No. 2017-05 clarifies the scope of the FASB’s recently established guidance on non-financial asset de-recognition as well as the accounting for partial sales of non-financial assets. It conforms the de-recognition guidance on non-financial assets with the model for revenue transactions. The adoption of ASU No. 2017-05 had no impact on the Company's consolidated financial statements.

Definition of a Business — On January 1, 2018, the Company adopted ASU No. 2017-01, "Clarifying the Definition of a Business" ("ASU No. 2017-01"). ASU No. 2017-01 changes the U.S. GAAP definition of a business. Such change can impact the accounting for asset purchases, acquisitions, goodwill impairment and other assessments. The adoption of ASU No. 2017-01 had no impact on the Company's consolidated financial statements.

Presentation of Restricted Cash — On January 1, 2018, the Company adopted ASU No. 2016-18, "Restricted Cash" ("ASU No. 2016-18"). ASU No. 2016-18 requires that amounts generally described as restricted cash and restricted cash equivalents be presented with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts presented on an entity's statement of cash flows. ASU No. 2016-18 must be applied using a retrospective transition method to each comparative period presented in an entity's financial statements.

As a result of the adoption of ASU No. 2016-18, the Company's restricted cash balances are now included in the beginning-of-period and end-of-period total amounts presented on the accompanying Condensed Consolidated Statements of Cash Flows. When compared to the Company's previously issued statement of cash flows for the three months ended March 31, 2017, the adoption of ASU No. 2016-18 resulted in: (i) a reduction of $18.2 million in cash used in investing activities; (ii) an increase of $43.3 million in the end-of-period total cash amount; and (iii) an increase of $25.1 million in the beginning-of-period total cash amount. Below is a table reconciling the beginning-of-period and end-of-period total cash amounts included in the Condensed Consolidated Balance Sheets to the amounts presented in the Condensed Consolidated Cash Flow Statements (in thousands).

	March 31,				December 31,
	2018		2017		2017		2016
Cash and cash equivalents	$	189,979	$	1,227,891	$	538,908	$	474,233
Restricted cash classified in (1), (2):
Prepaid expenses and other current assets	18,143		25,121		15,148		25,121
Other assets	—		18,150		3,002		—
Cash classified as held-for-sale (3)	19,508		—		10,000		—
Cash and cash equivalents and restricted cash per the Condensed Consolidated Statements of Cash Flows	$	227,630	$	1,271,162	$	567,058	$	499,354

(1) Restricted cash pertains to escrow accounts established in connection with certain of the Company's business acquisitions. Generally, such cash is restricted to use due to provisions contained in the underlying asset purchase agreement. The Company will disburse the restricted cash to the sellers of the businesses upon satisfaction of any contingencies described in such agreements (e.g., potential indemnification claims, etc.).

(2) Restricted cash is recorded in Prepaid expenses and other current assets and Other assets in the Company's consolidated balance sheets with the short-term or long-term classification dependent on the projected timing of disbursements to the sellers.

(3) Represents cash classified as a held-for-sale asset for certain businesses that were acquired as part of the CEB acquisition. See Note 2 — Acquisitions and Divestitures for additional information.

Income Taxes — On January 1, 2018, the Company adopted ASU No. 2016-16, "Intra-Entity Transfers of Assets Other Than Inventory" ("ASU No. 2016-16"). ASU No. 2016-16 accelerates the recognition of taxes on certain intra-entity transactions. U.S. GAAP previously required deferral of the income tax implications of an intercompany sale of assets until the assets were sold to a third party or recovered through use. Under ASU No. 2016-16, the seller’s tax effects and the buyer’s deferred taxes on asset transfers are immediately recognized upon the sale.

Pursuant to the transition rules in ASU No. 2016-16, any taxes attributable to pre-2018 intra-entity transfers that were previously deferred should be accelerated and recorded to accumulated earnings on the date of adoption. As a result of this transition rule, certain of the Company's balance sheet income tax accounts pertaining to pre-2018 intra-entity transfers, which aggregated $13.7 million, were reversed against accumulated earnings on January 1, 2018. ASU No. 2016-16 could have a material post-adoption impact on the Company's consolidated financial statements, depending on the nature, size and tax consequences of future intra-entity transfers, if any. However, ASU 2016-16 had no impact on the Company's operating results during the three months ended March 31, 2018.

Statement of Cash Flows — On January 1, 2018, the Company adopted ASU No. 2016-15, "Classification of Certain Cash Receipts and Cash Payments" ("ASU No. 2016-15"). ASU No. 2016-15 sets forth classification requirements for certain cash flow transactions. The adoption of ASU No. 2016-15 had no impact on the Company's consolidated financial statements.

Financial Instruments Recognition and Measurement — On January 1, 2018, the Company adopted ASU No. 2016-01, "Financial Instruments Overall - Recognition and Measurement of Financial Assets and Liabilities" ("ASU No. 2016-01") to address certain aspects of recognition, measurement, presentation and disclosure of financial instruments. Among the significant changes required by ASU No. 2016-01 is that equity investments are to be measured at fair value with changes in fair value recognized in net income. The adoption of ASU No. 2016-01 had no impact on the Company's consolidated financial statements.

Revenue Recognition — On January 1, 2018, the Company adopted ASU No. 2014-09, "Revenue from Contracts with Customers" ("ASU No. 2014-09"). The adoption of the standard did not have a material impact on the Company's accounting policies or consolidated financial statements. However, as required by ASU No. 2014-09, the Company's disclosures around revenue recognition have been significantly expanded.

The following sections provide an overview of the Company's revenues by segment along with the required disclosures under the new standard:

Our business and our revenues

Gartner delivers its principal products and services globally through four business segments: Research, Events, Consulting and Talent Assessment & Other. Our revenues by business segment are discussed below:

Research

Research provides trusted, objective insights and advice on the mission-critical priorities of leaders across all functional areas of an enterprise through research and other reports, briefings, proprietary tools, access to our analysts, peer networking services and membership programs that enable our clients to make better decisions. Gartner's traditional strengths in information technology (“IT”), marketing and supply chain research were enhanced in 2017 with Gartner's acquisition of CEB Inc. ("CEB"), which added CEB's best practice and talent management research insights across a range of business functions, to include human resources, finance, sales and legal.

Research revenues are mainly derived from subscription contracts for research products, representing approximately 90% of the segment’s revenue. The related revenues are deferred and recognized ratably over the applicable contract term (i.e., as we provide the service over the contract period). Fees derived from assisting organizations in selecting the right business software for their needs are recognized at a point in time (i.e., when the lead is provided to the vendor).

The Company enters into subscription contracts for research products that generally are for twelve-month periods or longer. Approximately 65% of our annual and multi-year Research subscription contracts provide for billing of the first annual period upon signing. In subsequent years, multi-year subscription contracts are normally billed prior to the contract’s anniversary date. Our other Research subscription contracts are usually invoiced in advance, commencing with the contract signing, on (i) a quarterly, monthly or other recurring basis or (ii) in accordance with a customized invoicing schedule. Research contracts are generally non-cancelable and non-refundable, except for government contracts that may have cancellation or fiscal funding clauses, which historically have not produced material cancellations. It is our policy to record the amount of a subscription contract that is billable as a fee receivable at the time the contract is signed with a corresponding amount as deferred revenue because the contract represents a legally enforceable claim.

Events

Events provides business professionals across an organization with the opportunity to learn, share and network. From our flagship Chief Information Officer event, Gartner Symposium/ITxpo, to industry-leading conferences focused on specific business roles and topics, to member-driven sessions, our events enable attendees to experience the best of Gartner insight and advice live.

We earn revenues from both the attendees and exhibitors at our events. Attendees are generally invoiced for the full attendance fee upon their completion of an online registration form or their signing of a contract, while exhibitors typically make several individual payments commencing with the signing of a contract. We collect almost all of the invoiced amounts in advance of the related event, resulting in the recording of deferred revenue. We recognize both the attendee and exhibitor revenue as we satisfy our related performance obligations (i.e., when the related symposium, conference, summit or exhibition is held).

The Company defers certain costs directly related to its events and expenses those costs in the period during which the related symposium, conference or exhibition occurs. The Company's policy is to defer only those costs, primarily prepaid site and production services costs, which are incremental and are directly attributable to a specific event. Other costs of organizing and producing our events, primarily Company personnel and non-event specific expenses, are expensed in the period incurred. At the end of each fiscal quarter, the Company assesses, on an event-by-event basis, whether the expected direct costs of producing a scheduled event will exceed the expected revenues. If such costs are expected to exceed revenues, the Company records the expected loss in the period determined.

Consulting

Consulting provides customized solutions to unique client needs through on-site, day-to-day support, as well as proprietary tools for measuring and improving IT performance with a focus on cost, performance, efficiency and quality, and contract optimization services.

Consulting revenues, primarily derived from custom consulting and measurement services, are principally generated from fixed fee or time and materials engagements. Revenues from fixed fee engagements are recognized on a proportional performance basis, while revenues from time and material engagements are recognized as work is delivered and/or services are provided. In both of these circumstances, we satisfy our performance obligations and control of the services are passed to our customers over time (i.e., during the duration of the contract or consulting engagement). On a contract-by-contract basis, we typically use actual labor hours incurred compared to total expected labor hours to measure the Company’s proportional performance in respect of our fixed fee engagements. If our labor and other costs on an individual contract are expected to exceed the total contract value or the contract’s funded ceiling amount, the Company reflects an adjustment to the contract’s overall profitability in the period determined. Revenues related to contract optimization engagements are contingent in nature and are only recognized at a point in time when all of the conditions related to their payment have been satisfied.

Consulting customers are invoiced based on the specific terms and conditions in their underlying contracts. We typically invoice our Consulting customers after we have satisfied some or all of the related performance obligation and the related revenue has been recognized. We record fees receivable for amounts that are billed or billable. We also record contract assets, which represent amounts for which we have recognized revenue but lack the unconditional right to payment as of the balance sheet date due to our required continued performance under the relevant contract, progress billing milestones, or other billing-related restrictions. The Company’s contract assets are discussed below.

Talent Assessment & Other

The Talent Assessment & Other segment helps organizations assess, engage, manage and improve talent. These services are provided through knowledge and skills assessments, training programs, workshops, and survey and questionnaire services.

Talent Assessment & Other segment revenues arising from knowledge and skills assessment services are recognized based on the nature of the underlying contract: (i) ratably over the term of the service period; (ii) upon delivery; or (iii) on a proportional performance basis. Revenues from training programs, workshops, and survey and questionnaire products are primarily recognized upon delivery of the service.

In April 2018, the Company sold its CEB Talent Assessment and CEB Workforce Survey and Analytics businesses, which were reported in the Talent Assessment & Other segment. Note 2 - Acquisitions and Divestitures provides additional information regarding these divestitures.

Overview of ASU No. 2014-09

ASU No. 2014-09 requires a five-step evaluative process that consists of:

(1) Identifying the contract with the customer;

(2) Identifying the performance obligations in the contract;

(3) Determining the transaction price for the contract;

(4) Allocating the transaction price to the performance obligations in the contract; and

(5) Recognizing revenue when (or as) performance obligations are satisfied.

ASU No. 2014-09 is intended to clarify the principles for recognizing revenue by removing inconsistencies and weaknesses in existing revenue recognition rules; provide a more robust framework for addressing revenue recognition issues; improve comparability of revenue recognition practices across entities, industries, jurisdictions and capital markets; and provide more useful information to users of financial statements through improved disclosures.

The Company adopted ASU No. 2014-09 using the modified retrospective method of adoption. Under this method of adoption, the cumulative effect of applying the new standard is recorded at the date of initial application, with no restatement of the comparative prior periods presented. The adoption of ASU No. 2014-09 did not result in a cumulative effect adjustment to the Company's Accumulated earnings in its consolidated financial statements. However, the adoption of the new standard required reclassifications of certain amounts presented in the Company’s consolidated balance sheet. As of January 1, 2018, these items were (i) the reclassification of certain fees receivable that met the definition of a contract asset, aggregating $26.7 million, from Fees receivable, net to Prepaid expenses and other current assets; and (ii) the reclassification of a refund liability, aggregating $6.2 million, from the allowance for fees receivable to Accounts payable and accrued liabilities.

Related to our adoption of ASU No. 2014-09, we elected to (i) apply the provisions of this new accounting guidance only to contracts that were not completed at the date of initial application and (ii) utilize a practical expedient whereby we reflected the aggregate effect of all contract modifications that occurred prior to January 1, 2018 (rather than retrospectively restating the affected contracts) when identifying our satisfied and unsatisfied performance obligations, determining the transaction prices with our customers, and allocating such transaction prices to our satisfied and unsatisfied performance obligations. These two elections had no financial impact.

Prior to January 1, 2018, the Company recognized revenue in accordance with then-existing U.S. GAAP and SEC Staff Accounting Bulletin No. 104, "Revenue Recognition" (“prior GAAP”). Under both ASU No. 2014-09 and prior GAAP, revenue can only be recognized when all of the required criteria are met. Although there were some minor changes to the Company’s revenue recognition policies and procedures effective January 1, 2018 with the adoption of ASU No. 2014-09, there were no material differences between the timing and amount of revenues recognized under ASU No. 2014-09 and prior GAAP. The accompanying Condensed Consolidated Statements of Operations present revenues net of any sales or value-added taxes that we collect from customers and remit to government authorities.

ASU No. 2014-09 requires that we assess at inception all of the promises in a customer contract to determine if a promise is a separate performance obligation. To identify our performance obligations, we consider all of the services promised in a customer contract, regardless of whether they are explicitly stated or are implied by customary business practices. If we conclude that a service is separately identifiable and distinct from the other offerings in a contract, we account for such a promise as a separate performance obligation.

If a customer contract has more than one performance obligation, then the total contract consideration is allocated among the separate deliverables based on their stand-alone selling prices, which are determined based on the prices at which the Company discretely sells the stand-alone services. If a contract includes a discount or other pricing concession, the transaction price is allocated among the performance obligations on a proportionate basis using the relative stand-alone selling prices of the individual deliverables being transferred to the customer, unless the discount or other pricing concession can be ascribed to specifically identifiable performance obligations.

The contracts with our customers delineate the final terms and conditions of the underlying arrangement, including product descriptions, subscription periods, deliverables, quantity and price of each service purchased. Since the transaction price of almost all of our customer contracts is typically agreed upon upfront and generally does not fluctuate during the duration of the contract, variable consideration is insignificant. The Company may engage in certain financing transactions with customers but these arrangements have been limited in number and not material.

Required Disclosures under ASU No. 2014-09

ASU No. 2014-09 requires significantly expanded disclosures around the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. These additional disclosures are provided below:

Disaggregated Revenues

We believe that disaggregating the Company’s revenues by primary geographic location and the timing of when revenue is recognized achieves the disclosure objectives in ASU No. 2014-09. Our disaggregated revenue information by reportable segment is presented for the periods indicated in the tables below (in thousands).

Three Months Ended March 31, 2018

	Research		Events		Consulting		Talent Assessment & Other		Total
Primary Geographic Markets: (1)
United States and Canada	$	489,713	$	24,069	$	45,129	$	34,594	$	593,505
Europe, Middle East and Africa	184,547		16,891		29,938		28,290		259,666
Other International	89,664		5,127		7,829		7,774		110,394
Total revenues	$	763,924	$	46,087	$	82,896	$	70,658	$	963,565

Three Months Ended March 31, 2017

	Research		Events		Consulting		Talent Assessment & Other		Total
Primary Geographic Markets: (1)
United States and Canada	$	327,492	$	17,663	$	47,832	$	—	$	392,987
Europe, Middle East and Africa	115,802		14,095		23,823		—		153,720
Other International	68,012		3,511		6,939		—		78,462
Total revenues	$	511,306	$	35,269	$	78,594	$	—	$	625,169

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

Three Months Ended March 31, 2018

	Research		Events		Consulting		Talent Assessment & Other		Total
Timing of Revenue Recognition:
Transferred over time (1)	$	701,096	$	—	$	74,010	$	58,946	$	834,052
Transferred at a point in time (2)	62,828		46,087		8,886		11,712		129,513
Total revenues	$	763,924	$	46,087	$	82,896	$	70,658	$	963,565

Three Months Ended March 31, 2017

	Research		Events		Consulting		Talent Assessment & Other		Total
Timing of Revenue Recognition:
Transferred over time (1)	$	466,706	$	—	$	64,994	$	—	$	531,700
Transferred at a point in time (2)	44,600		35,269		13,600		—		93,469
Total revenues	$	511,306	$	35,269	$	78,594	$	—	$	625,169

(1) These Research revenues were recognized in connection with performance obligations that were satisfied over time using a time-elapsed output method to measure progress. The corresponding Consulting revenues were recognized over time using labor hours as an input measurement basis. Talent Assessment & Other revenues in this category were recognized using either a time-elapsed output method, performance-based milestone approach or labor hours, depending on the nature of the underlying customer contract.

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

Determining a measure of progress for performance obligations that are satisfied over time and when control transfers for performance obligations that are satisfied at a point in time requires us to make judgments that affect the timing of when revenue is recognized. A key factor in this determination is when the customer is able to direct the use of, and can obtain substantially all of the benefits from, the deliverable.

For performance obligations recognized in accordance with a time-elapsed output method, the Company’s efforts are expended consistently throughout the contractual period and the Company transfers control evenly by providing stand-ready services. For performance obligations satisfied under our Consulting fixed fee and time and materials engagements, we believe that labor hours are the best measure of depicting the Company’s progress because labor output corresponds directly to the value of the Company’s performance to date as control is transferred. In our Talent Assessment & Other segment, we select a method to assess the completion of our performance obligations that best aligns with the specific characteristics of the individual customer contract. We believe that these methods to measure progress provide a reasonable and supportable determination as to when we transfer control over these services to our customers.

For customer contracts that are greater than one year in duration, the aggregate amount of the transaction price allocated to performance obligations that are unsatisfied (or partially unsatisfied) as of March 31, 2018 was approximately $2.1 billion. The Company expects to recognize $1,060.6 million, $856.7 million and $209.8 million of this revenue (most of which pertains to Research) during the remainder of 2018, the year ending December 31, 2019 and thereafter, respectively. The Company applies the practical expedient allowed in ASU No. 2014-09 and, accordingly, it does not disclose such performance obligation information for customer contracts that have original durations of one year or less.

Customer Contract Assets and Liabilities

The timing of the recognition of revenues, the amount and timing of our billings and cash collections, as well as upfront customer payments, result in the recording of both assets and liabilities on our Condensed Consolidated Balance Sheets.

The payment terms and conditions in our customer contracts vary. In some cases, customers prepay and, in other cases, after we conduct a credit evaluation, payment may be due in arrears. Because the timing of the delivery of our services typically differs from the timing of customer payments, the Company recognizes either a contract asset (we perform either fully or partially under the contract but a contingency remains) or a contract liability (upfront customer payments precede our performance, resulting in deferred revenue). Amounts recorded as contract assets are reclassified to fees receivable when all of the outstanding conditions have been resolved and our right to payment becomes unconditional. Contracts with payments due in arrears are also recognized as fees receivable. As our contractual performance obligations are satisfied over time or at a point in time, the Company correspondingly relieves its contract liabilities and records the associated revenue.

The table below provides information regarding certain of the Company’s balance sheet accounts that pertain to its contracts with customers, to exclude our held-for-sale businesses (in thousands):

	March 31,		December 31,
	2018		2017
Assets:
Fees receivable, gross (1)	$	1,142,064	$	1,162,871
Contract assets (2)	$	27,593	$	26,672
Contract liabilities:
Deferred revenues (current liability) (3)	$	1,719,637	$	1,630,198
Non-current deferred revenues (3)	16,139		16,205
Total contract liabilities	$	1,735,776	$	1,646,403

(1) Fees receivable represent the unconditional right of payment from our customers and includes both billed and unbilled amounts.

(2) Contract assets represent recognized revenue for which we do not have an unconditional right to payment as of the balance sheet date because the project may be subject to a progress milestone or some other billing restriction. In the accompanying Condensed Consolidated Balance Sheets, contract assets are recorded in Prepaid expenses and other current assets as of March 31, 2018 and Fees receivable, net as of December 31, 2017.

(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 our performance obligation(s).

During the three months ended March 31, 2018, the Company recognized $605.5 million of revenue that was attributable to deferred revenues that were recorded at December 31, 2017. Such amount primarily consisted of (i) Research and Talent Assessment & Other revenue that was recognized ratably as control of the goods or services passed to the customer and (ii) Events revenue pertaining to symposia, conferences, summits or exhibitions that occurred during the calendar quarter. During the three months ended March 31, 2018, the Company recorded no material impairments related to its contract assets. The Company does not in the normal course of business recognize revenues from performance obligations satisfied in prior periods.

Allowance for Losses and Revenue Reserves

As of December 31, 2017, the Company maintained an allowance for losses that included a bad debt allowance and a revenue reserve. Provisions to the Company’s allowance for losses were charged against earnings as either a reduction in revenues or an increase in expense.

Effective with the adoption of ASU No. 2014-09 on January 1, 2018, the allowance for losses, which is classified as an offset to the gross amount of fees receivable, and the related charge against earnings (i.e., bad debt expense) is now comprised solely of estimated uncollectible fees receivable due to credit and other associated risks. The revenue reserve previously reported as part of the allowance for losses has been reclassified and is now reported as a liability in accordance with ASU No. 2014-09. The revenue reserve is maintained for amounts deemed to be uncollectible for reasons other than bad debt. The amount of the revenue reserve is based on past experience and current estimates. As of March 31, 2018, the revenue reserve balance was $6.9 million and adjustments to the account during the three months ended March 31, 2018 were not significant.

The determination of the allowance for losses is based on historical loss experience, an assessment of current economic conditions, the aging of outstanding receivables, the financial health of specific clients and probable losses. This evaluation is inherently judgmental and requires the use of estimates. The allowance for losses is periodically re-evaluated and adjusted as more information about the ultimate collectability of fees receivable becomes available. Circumstances that could cause the allowance for losses to increase include changes in our clients’ liquidity and credit quality, other factors negatively impacting our clients’ ability to pay their obligations as they come due, and the effectiveness of our collection efforts.

Costs of obtaining and fulfilling a customer contract

Upon the signing of a customer contract, the Company capitalizes the related commission as a recoverable direct incremental cost of obtaining the underlying contract and records a corresponding commission payable. No other amounts are capitalized as a cost of obtaining or fulfilling a customer contract because no expenditures have been identified that meet the requisite capitalization criteria. For Research, Consulting and Talent Assessment & Other, we generally use the straight-line method of amortization for deferred commissions over a period that is based on the projected recoverability for such costs, using factors such as the underlying contract period, the timing of when the corresponding revenues will be earned, and the anticipated term of the engagement. For Events, deferred commissions are expensed during the period when the related event occurs.

Under all circumstances, deferred commissions are amortized over a period that does not exceed one year. During the three months ended March 31, 2018 and 2017, such amortization expense was $75.9 million and $50.2 million, respectively, and was included in Selling, general and administrative expense in the accompanying Condensed Consolidated Statements of Operations. The Company recorded no material impairments of its deferred commissions during either the three months ended March 31, 2018 or 2017.

Accounting standards issued but not yet adopted. The FASB has issued accounting standards that have not yet become effective and may impact the Company’s consolidated financial statements or related disclosures in future periods. These standards and their potential impact are discussed below:

Accounting standards effective in 2019

Certain Tax Effects Stranded In Accumulated Other Comprehensive Income — In February 2018, the FASB issued ASU No. 2018-02, "Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income" ("ASU No. 2018-02"). ASU No. 2018-02 provides an entity with the option to reclassify to retained earnings the tax effects from items that have been stranded in accumulated other comprehensive income as a result of the Tax Cuts and Jobs Act of 2017 (the “Act”). Upon adoption, ASU No. 2018-02 requires an entity to make new disclosures, including whether or not the entity elected to reclassify the tax effects related to the Act and the entity’s accounting policy for releasing the income tax effects from accumulated other comprehensive income for all other items (i.e., those not pertaining to the Act). Entities may adopt ASU No. 2018-02 using one of two transition methods: (i) retrospective to each period wherein the income tax effects of the Act related to items remaining in accumulated other comprehensive income are recognized or (ii) at the beginning of the period of adoption. ASU No. 2018-02 is effective for Gartner on January 1, 2019; however, early adoption is permitted. We are currently evaluating the potential impact of ASU No. 2018-02 on the Company's consolidated financial statements but no material impact is expected at adoption.

Targeted Improvements to Accounting for Hedging Activities - In August 2017, the FASB issued ASU No. 2017-12, "Derivatives and Hedging ("ASU No. 2017-12"). ASU No. 2017-12 is intended to improve the financial reporting of hedging relationships to better portray economic results of an entity’s risk management activities in its financial statements. In addition to that main objective, the standard makes certain targeted improvements to simplify the application of the hedge accounting guidance in current U.S. GAAP. ASU No. 2017-12 is effective for Gartner on January 1, 2019. We are currently evaluating the impact of ASU No. 2017-12 on the Company's consolidated financial statements.

Distinguishing Liabilities from Equity — In July 2017, the FASB issued ASU No. 2017-11, "Earnings Per Share, Distinguishing Liabilities from Equity, and Derivatives and Hedging" ("ASU No. 2017-11"). ASU No. 2017-11 is intended to simplify the accounting for financial instruments with characteristics of liabilities and equity. Among the issues addressed are: (i) determining whether an instrument (or embedded feature) is indexed to an entity’s own stock; (ii) distinguishing liabilities from equity for mandatorily redeemable financial instruments of certain nonpublic entities; and (iii) identifying mandatorily redeemable non-controlling interests. ASU No. 2017-11 is effective for Gartner on January 1, 2019. We are currently evaluating the potential impact of ASU No. 2017-11 on the Company's consolidated financial statements.

Leases — In February 2016, the FASB issued ASU No. 2016-02, "Leases" ("ASU No. 2016-02"), which will require significant changes in the accounting and disclosure for lease arrangements. Under current U.S. GAAP, lease arrangements that meet certain criteria are considered operating leases and are not recorded on an entity's balance sheet. Because all of our existing lease arrangements are accounted for as operating leases, they are not recorded on the Company's balance sheet. ASU No. 2016-02 will significantly change the accounting for leases because a right-of-use ("ROU") model will be used wherein a lessee must record an ROU asset and a lease liability on its balance sheet for leases with initial terms longer than 12 months. Under ASU No. 2016-02, leases will be classified as either finance or operating arrangements, with such classification affecting the pattern of expense recognition in an entity's income statement. ASU No. 2016-02 also requires expanded disclosures about leasing arrangements. ASU No. 2016-02 will be effective for Gartner on January 1, 2019. We are currently evaluating the potential impact of ASU No. 2016-02 on our consolidated financial statements.

Accounting standards effective in 2020

Goodwill Impairment — In January 2017, the FASB issued ASU No. 2017-04, "Intangibles—Goodwill and Other - Simplifying the Test for Goodwill Impairment" ("ASU No. 2017-04"). ASU No. 2017-04 simplifies the determination of the amount of goodwill to be potentially charged off by eliminating Step 2 of the goodwill impairment test under current U.S. GAAP. ASU No. 2017-04 is effective for Gartner on January 1, 2020. The adoption of ASU No. 2017-04 is currently not expected to have a material impact on the Company's consolidated financial statements.

Financial Instrument Credit Losses — In June 2016, the FASB issued ASU No. 2016-13, "Financial Instruments—Credit Losses" ("ASU No. 2016-13"). ASU No. 2016-13 amends the current financial instrument impairment model by requiring entities to use a forward-looking approach based on expected losses to estimate credit losses on certain types of financial instruments, including trade receivables. ASU No. 2016-13 is effective for Gartner on January 1, 2020, with early adoption permitted. We are currently evaluating the potential impact of ASU No. 2016-13 on our consolidated financial statements.

The FASB continues to work on a number of other significant accounting standards which, if issued, could materially impact the Company's accounting policies and disclosures in future periods. As these standards have not yet been issued, the effective dates and potential impact are unknown.

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Acquisitions and Divestitures

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Acquisitions and Divestitures

Acquisitions and Divestitures

Acquisitions

The Company accounts for business acquisitions in accordance with the acquisition method of accounting as prescribed by FASB ASC Topic 805, Business Combinations. The acquisition method of accounting requires the Company to record the net assets and liabilities acquired based on their estimated fair values as of the acquisition date, with any excess of the consideration transferred over the estimated fair value of the net assets acquired, including identifiable intangible assets, to be recorded to goodwill. Under the acquisition method, the operating results of acquired companies are included in the Company's consolidated financial statements beginning on the date of acquisition. The Company did not have any business acquisitions in the first quarter of 2018. In the first quarter of 2017, the Company acquired L2, Inc. ("L2"), a subscription-based research business that benchmarks the digital performance of brands. During the three months ended March 31, 2018, the Company finalized its acquisition accounting for L2 and CEB Inc. ("CEB"), which was acquired on April 5, 2017. There were no material measurement period adjustments recorded during the 2018 quarterly period.

The Company recognized $59.3 million of acquisition and integration charges in 2018 compared to $13.3 million in 2017. The additional charges during 2018 consisted of higher professional fees, severance, stock-based compensation charges, and accruals for exit costs for certain office space that the Company does not intend to occupy in Arlington, Virginia that were related to our acquisition of CEB. The following table presents a summary of the activity related to our accrual for exit costs at all of our facilities for the quarter ended March 31, 2018 (in thousands):

Liability balance at December 31, 2017	$	12,961
Charges and adjustments, net	44,230
Payments	(4,734		)
Liability balance at March 31, 2018 (1)	$	52,457

(1) In total, we estimate that we will make net cash payments of approximately $61.2 million for exit costs in connection with the activities described herein. Through March 31, 2018, in the aggregate, we have expensed $57.3 million and paid $4.9 million related to such activities.

Divestitures

CEB Talent Assessment business

On April 3, 2018, the Company sold its CEB Talent Assessment business in all cash transaction for a purchase price of $400.0 million. The purchase price is subject to customary adjustments and other deal-related expenses. The CEB Talent Assessment business was acquired by Gartner as part of the CEB acquisition in April 2017 and was a significant portion of the Company's Talent Assessment & Other segment. During the first quarter of 2018, the CEB Talent Assessment business contributed approximately $47.0 million of revenue and recognized pre-tax income of approximately $2.1 million.

CEB Workforce Survey & Analytics business

On April 30, 2018, the Company sold its CEB Workforce Survey and Analytics ("WS&A") business in an all cash transaction for a purchase price of $29.0 million. The purchase price is subject to customary adjustments and other deal-related expenses. The WS&A business was also acquired by Gartner as part of the CEB acquisition in April 2017 and was reported with the Talent Assessment & Other segment.

The Company has classified the related assets and liabilities of these businesses as held-for-sale in its Consolidated Balance Sheets.

The principal components of the held-for-sale assets and liabilities for these businesses are summarized in the table below (in thousands):

	March 31, 2018 (1)		December 31, 2017 (1)
Cash and cash equivalents	$	19,508	$	10,000
Fees receivable, net	49,191		50,928
Goodwill	246,661		212,994
Intangible assets, net	264,145		250,472
Other assets (2)	23,849		18,571
Total assets held-for-sale	$	603,354	$	542,965
Accounts payable and accrued liabilities	$	26,467	$	32,388
Deferred revenues	65,846		61,450
Other liabilities	51,644		52,007
Total liabilities held-for-sale	$	143,957	$	145,845

(1) March 31, 2018 includes both the CEB Talent Assessment business and the WS&A business. December 31, 2017 includes the CEB Talent Assessment business only.

(2) Other assets includes property, equipment and leasehold improvements, net.

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Computation of Net (Loss) Income per Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Computation of Net (Loss) Income per Share

Computation of Net (Loss) Income per Share

Basic earnings per share (“EPS”) is computed by dividing net (loss) income by the weighted average number of shares of Common Stock outstanding for the period. Diluted EPS reflects the potential dilution of securities that could share in earnings. When the impact of common share equivalents is anti-dilutive, they are excluded from the calculation.

The following table sets forth the calculation of basic and diluted (loss) income per share (in thousands, except per share data):

	Three Months Ended
	March 31,
	2018			2017
Numerator:
Net (loss) income used for calculating basic and diluted (loss) income per common share	$	(19,587	)	$	36,433
Denominator:
Weighted average common shares used in the calculation of basic (loss) income per share	91,005			82,835
Common stock equivalents associated with stock-based compensation plans (1), (2)	—			1,260
Shares used in the calculation of diluted (loss) income per share	91,005			84,095
Basic (loss) income per share	$	(0.22	)	$	0.44
Diluted (loss) income per share	$	(0.22	)	$	0.43

(1) For the three months ended March 31, 2017, certain common stock equivalents were not included in the computation of diluted income per share because the effect would have been anti-dilutive. These common share equivalents totaled less than 0.4 million for the 2017 period presented.

(2) For the three months ended March 31, 2018, approximately 1.3 million common stock equivalents were completely excluded from the calculation of diluted (loss) per share because they were anti-dilutive.

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Stock-Based Compensation

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [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 March 31, 2018, the Company had 4.9 million shares of its common stock, par value $.0005 per share, (the “Common Stock”) available for stock-based compensation awards under its 2014 Long-Term Incentive Plan.

The Company accounts for stock-based compensation awards in accordance with FASB ASC Topics 505 and 718 and SEC Staff Accounting Bulletins No. 107 and No. 110. Stock-based compensation expense is based on the fair value of the award on the date of grant. The Company recognizes stock-based compensation expense over the period that the related service is performed, which is generally the same as the vesting period of the underlying award. Currently, the Company issues treasury shares upon the exercise, release or settlement of stock-based compensation awards.

Determining the appropriate fair value model and calculating the fair value of stock-based compensation awards requires the use of certain subjective assumptions, including the expected life of a stock-based compensation award and Common Stock price volatility. In addition, determining the appropriate periodic stock-based compensation expense requires management to estimate the likelihood of the achievement of certain performance targets. The assumptions used in calculating the fair values of stock-based compensation awards and the related periodic expense represent management’s best estimates, which involve inherent uncertainties and the application of judgment. As a result, if circumstances change and the Company deems it necessary in the future to modify the assumptions it made or to use different assumptions, or if the quantity and nature of the Company’s stock-based compensation awards changes, then the amount of expense may need to be adjusted and future stock-based compensation expense could be materially different from what has been recorded in the current period.

Stock-Based Compensation Expense

The Company recognized the following stock-based compensation expense by award type and expense category line item during the periods indicated (in millions):

	Three Months Ended
	March 31,
Award type	2018		2017
Stock appreciation rights	$	3.5	$	2.8
Restricted stock units	27.2		19.6
Common stock equivalents	0.2		0.2
Total (1)	$	30.9	$	22.6

	Three Months Ended
	March 31,
Expense category line item	2018		2017
Cost of services and product development	$	11.4	$	9.3
Selling, general and administrative	18.2		13.3
Acquisition and integration charges (2)	1.3		—
Total (1)	$	30.9	$	22.6

(1) Includes charges of $17.8 million and $14.5 million during the three months ended March 31, 2018 and 2017, respectively, for awards to retirement-eligible employees. Those awards vest on an accelerated basis.

(2) These charges are primarily the result of the acceleration of the vesting of certain restricted stock units related to the CEB acquisition.

As of March 31, 2018, the Company had $125.8 million of total unrecognized stock-based compensation cost, which is expected to be expensed over the remaining weighted average service period of approximately 2.9 years.

Stock-Based Compensation Awards

The disclosures presented below provide information regarding the Company’s stock-based compensation awards, all of which have been classified as equity awards in accordance with FASB ASC Topic 505.

Stock Appreciation Rights

Stock-settled stock appreciation rights ("SARs") permit the holder to participate in the appreciation of the value of the Common Stock. After the applicable vesting criteria have been satisfied, SARs are settled in shares of Common Stock upon exercise by the employee. SARs vest ratably over a four-year service period and expire seven years from the date of grant. The fair value of a SARs award is recognized as compensation expense on a straight-line basis over four years. SARs have only been awarded to the Company’s executive officers.

When SARs are exercised, the number of shares of Common Stock issued is calculated as follows: (1) the total proceeds from the exercise of the SARs award (calculated as the closing price of the Common Stock as reported on the New York Stock Exchange on the date of exercise less the exercise price of the SARs award, multiplied by the number of SARs exercised) is divided by (2) the closing price of the Common Stock on the date of exercise. The Company withholds a portion of the shares of the Common Stock issued upon exercise to satisfy statutory tax withholding requirements. SARs recipients do not have any stockholder rights until the shares of Common Stock are issued in respect of the award, which is subject to the prior satisfaction of the vesting and other criteria relating to such grants.

The following table summarizes changes in SARs outstanding during the three months ended March 31, 2018:

	Stock Appreciation Rights ("SARs") (in millions)	Per Share Weighted Average Exercise Price		Per Share Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Term (Years)
Outstanding at December 31, 2017	1.2	$	76.73	$	17.35	4.28
Granted	0.3	114.26		25.63		6.86
Outstanding at March 31, 2018 (1) (2)	1.5	85.06		19.15		4.70
Vested and exercisable at March 31, 2018 (2)	0.8	$	70.96	$	16.39	3.56

(1) As of March 31, 2018, 0.7 million of the total SARs outstanding were unvested. The Company expects that substantially all of those unvested awards will vest in future periods.

(2) As of March 31, 2018, the total SARs outstanding had an intrinsic value of $47.6 million. On such date, SARs vested and exercisable had an intrinsic value of $35.1 million.

The fair value of a SARs award is determined on the date of grant using the Black-Scholes-Merton valuation model with the following weighted average assumptions:

	Three Months Ended
	March 31,
	2018		2017
Expected dividend yield (1)	—	%	—	%
Expected stock price volatility (2)	21	%	22	%
Risk-free interest rate (3)	2.5	%	1.8	%
Expected life in years (4)	4.5		4.5

(1) The expected dividend yield assumption was based on both the Company's historical and anticipated dividend payouts. Historically, the Company has not paid cash dividends on its Common Stock.

(2) The determination of expected stock price volatility was based on both historical Common Stock prices and implied volatility from publicly traded options in the Common Stock.

(3) The risk-free interest rate was based on the yield of a U.S. Treasury security with a maturity similar to the expected life of the award.

(4) The expected life represents the Company’s estimate of the weighted average period of time the SARs are expected to be outstanding (that is, the period between the service inception date and the expected exercise date).

Restricted Stock Units

Restricted stock units ("RSUs") give the awardee the right to receive shares of Common Stock when the vesting conditions are met and certain restrictions lapse. Each RSU that vests entitles the awardee to one share of Common Stock. RSU awardees do not have any of the rights of a Gartner stockholder, including voting rights and the right to receive dividends and distributions, until the shares are released. The fair value of an RSU award is determined on the date of grant based on the closing price of the Common Stock as reported on the New York Stock Exchange on that date. Service-based RSUs vest ratably over four years and are expensed on a straight-line basis over the vesting period. Performance-based RSUs are subject to the satisfaction of both performance and service conditions, vest ratably over four years and are expensed on an accelerated basis over the vesting period.

The following table summarizes the changes in RSUs outstanding during the three months ended March 31, 2018:

	Restricted Stock Units ("RSUs") (in millions)		Per Share Weighted Average Grant Date Fair Value
Outstanding at December 31, 2017	1.5		$	91.47
Granted (1)	0.7		114.33
Vested and released	(0.6	)	86.21
Outstanding at March 31, 2018 (2) (3)	1.6		$	101.52

(1) The 0.7 million of RSUs granted during the three months ended March 31, 2018 consisted of 0.3 million of performance-based RSUs awarded to executives and 0.4 million of service-based RSUs awarded to non-executive employees. The performance-based awards include RSUs in final settlement of 2017 grants and approximately 0.2 million of RSUs representing the target amount of the grant for the year ending December 31, 2018 that is tied to an increase in Gartner's total contract value for 2018. Total contract value for this determination represents the value attributable to all of Gartner's subscription-related revenue contracts. The number of performance-based RSUs that will ultimately be awarded for 2018 ranges from 0% to 200% of the target amount and will be finalized based on the actual increase in Gartner's total contract value for 2018 as measured on December 31, 2018. If the specified minimum level of achievement is not met, the performance-based RSUs pertaining to 2018 will be forfeited in their entirety and any previously recorded compensation expense will be reversed.

(2) The Company expects that substantially all of the RSUs outstanding will vest in future periods.

(3) As of March 31, 2018, the weighted average remaining contractual term of the RSUs outstanding was approximately 1.8 years.

Common Stock Equivalents

Common stock equivalents ("CSEs") are convertible into Common Stock. Each CSE entitles the holder to one share of Common Stock. Members of our Board of Directors receive their directors’ fees in CSEs unless they opt to receive up to 50% of those fees in cash. Generally, CSEs have no defined term and are converted into shares of Common Stock when service as a director terminates unless the director has elected an accelerated release. The fair value of a CSE award is determined on the date of grant based on the closing price of the Common Stock as reported on the New York Stock Exchange on that date. CSEs vest immediately and, as a result, they are recorded as expense on the date of grant.

The following table summarizes the changes in CSEs outstanding during the three months ended March 31, 2018:

	Common Stock Equivalents ("CSEs")		Per Share Weighted Average Grant Date Fair Value
Outstanding at December 31, 2017	110,013		$	23.19
Granted	1,624		116.06
Converted to shares of Common Stock upon grant	(998	)	124.94
Outstanding at March 31, 2018	110,639		$	23.59

Employee Stock Purchase Plan

The Company has an employee stock purchase plan (the “ESP Plan”) under which eligible employees are permitted to purchase shares of Common Stock through payroll deductions, which may not exceed 10% of an employee’s compensation, or $23,750 in any calendar year, at a price equal to 95% of the closing price of the Common Stock as reported on the New York Stock Exchange at the end of each offering period. As of March 31, 2018, the Company had 0.8 million shares available for purchase under the ESP Plan. The ESP Plan is considered non-compensatory under FASB ASC Topic 718 and, as a result, the Company does not record stock-based compensation expense for employee share purchases. The Company received $4.1 million and $3.0 million in cash from employee share purchases under the ESP Plan during the three months ended March 31, 2018 and 2017, respectively.

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Segment Information

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Segment Information

Segment Information

Our products and services are delivered through four segments – Research, Events, Consulting and Talent Assessment & Other, as follows:

• Research provides trusted, objective insights and advice on the mission-critical priorities of leaders across all functional areas of the enterprise through research and other reports, briefings, proprietary tools, access to our analysts, peer networking services and membership programs that enable our clients to make better decisions. Gartner's traditional strengths in IT, marketing and supply chain research were enhanced in 2017 with Gartner's acquisition of CEB, Inc., which added CEB's best practice and talent management research insights across a range of business functions, to include human resources, finance, sales and legal.

• Events provides business professionals across the organization the opportunity to learn, share and network. From our flagship CIO event Gartner Symposium/ITxpo, to industry-leading conferences focused on specific business roles and topics, to member-driven sessions, our events enable attendees to experience the best of Gartner insight and advice live.

• Consulting provides customized solutions to unique client needs through on-site, day-to-day support, as well as proprietary tools for measuring and improving IT performance with a focus on cost, performance, efficiency and quality.

• Talent Assessment & Other helps organizations assess, engage, manage and improve talent. This is accomplished through knowledge and skills assessments, training programs, workshops, and survey and questionnaire services.

The Company evaluates segment performance and allocates resources based on gross contribution margin. Gross contribution, as presented in the table 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, and Acquisition and integration charges. 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 in the allocation of resources.

The following tables present operating information about the Company’s reportable segments for the periods indicated (in thousands):

Three Months Ended March 31, 2018	Research		Events		Consulting		Talent Assessment & Other (1)		Consolidated
Revenues	$	763,924	$	46,087	$	82,896	$	70,658	$	963,565
Gross contribution	531,456		16,190		24,124		43,044		614,814
Corporate and other expenses									(623,525		)
Operating loss									$	(8,711	)

Three Months Ended March 31, 2017	Research		Events		Consulting		Talent Assessment & Other		Consolidated
Revenues (2)	$	511,306	$	35,269	$	78,594	$	—	$	625,169
Gross contribution (2)	351,113		13,567		23,937		—		388,617
Corporate and other expenses									(335,103		)
Operating income									$	53,514

(1) In April 2018, the Company sold its CEB Talent Assessment and CEB Workforce Survey and Analytics businesses. These two businesses were acquired in April 2017 with the CEB acquisition. The results of these businesses are included in the Talent Assessment & Other segment results for the three months ended March 31, 2018. Additional information regarding these divestitures is included in Note 2 — Acquisitions and Divestitures.

(2) In 2017, the Company began reporting the results of its Strategic Advisory Services ("SAS") business in Research whereas previously the SAS business was reported with Consulting. As a result, revenues of $6.7 million pertaining to the three months ended March 31, 2017 were reclassified from Consulting to Research to be comparable with the current year presentation. Gross contribution of $4.4 million for the three months ended March 31, 2017 was also reclassified from Consulting to Research.

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

	Three Months Ended
	March 31,
	2018			2017
Total segment gross contribution	$	614,814		$	388,617
Costs and expenses:
Cost of services and product development - unallocated (1)	8,458			1,057
Selling, general and administrative	487,745			304,244
Depreciation and amortization	68,056			16,530
Acquisition and integration charges	59,266			13,272
Operating (loss) income	(8,711		)	53,514
Interest expense and other, net	34,160			5,017
(Benefit) provision for income taxes	(23,284		)	12,064
Net (loss) income	$	(19,587	)	$	36,433

(1) The unallocated amounts consist of certain bonus and related fringe costs recorded in consolidated Cost of services and product development expense that are not allocated to segment expense. The Company's policy is to only allocate bonus and related fringe charges to segments for up to 100% of the segment employee's target bonus. Amounts above 100% are absorbed by corporate.

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Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2018

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. The annual assessment of the recoverability of recorded goodwill can be based on either a qualitative or quantitative assessment or a combination of the two approaches. Both methods utilize estimates which, in turn, require judgments and assumptions regarding future trends and events. As a result, both the precision and reliability of the resulting estimates are subject to uncertainty. If our annual goodwill impairment evaluation determines that the fair value of a reporting unit is less than its related carrying amount, we may recognize an impairment charge. In connection with our most recent annual impairment test of goodwill during the quarter ended September 30, 2017, which indicated no impairment of recorded goodwill, the Company utilized the qualitative approach in assessing the fair values of its reporting units relative to their respective carrying values.

The following table presents changes to the carrying amount of goodwill by segment during the three months ended March 31, 2018 (in thousands):

	Research			Events			Consulting		Talent Assessment & Other			Total
Balance at December 31, 2017 (1), (2)	$	2,619,677		$	187,920		$	97,798	$	81,899		$	2,987,294
Reclassified as held-for-sale (3)	—			—			—		(20,547		)	(20,547		)
Foreign currency translation impact and other (4)	(17,958		)	(170		)	528		7,495			(10,105		)
Balance at March 31, 2018	$	2,601,719		$	187,750		$	98,326	$	68,847		$	2,956,642

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

(2) Excludes certain amounts related to held-for-sale operations.

(3) Represents amounts reclassified as held-for-sale assets related to the CEB Talent Assessment and WS&A businesses. See Note 2 — Acquisitions and Divestitures for additional information.

(4) Includes the foreign currency translation impact and certain measurement period adjustments related to the acquisition of CEB in April 2017.

Finite-Lived Intangible Assets

The following tables present reconciliations of the carrying amounts of the Company's finite-lived intangible assets as of the dates indicated (in thousands):

March 31, 2018	Customer Relationships			Software			Content			Other			Total
Gross cost at December 31, 2017 (1)	$	1,200,316		$	123,424		$	104,313		$	54,929		$	1,482,982
Write-off of fully amortized intangible assets	—			—			(228		)	—			(228		)
Reclassified as held-for-sale (2)	(7,170		)	(321		)	(241		)	(39		)	(7,771		)
Foreign currency translation impact	15,218			491			251			(171		)	15,789
Gross cost	1,208,364			123,594			104,095			54,719			1,490,772
Accumulated amortization (3)	(119,075		)	(32,410		)	(63,778		)	(27,738		)	(243,001		)
Balance at March 31, 2018 (1)	$	1,089,289		$	91,184		$	40,317		$	26,981		$	1,247,771

December 31, 2017	Customer Relationships			Software			Content			Other			Total
Gross cost (1)	$	1,200,316		$	123,424		$	104,313		$	54,929		$	1,482,982
Accumulated amortization (3)	(92,983		)	(26,344		)	(47,475		)	(24,158		)	(190,960		)
Balance at December 31, 2017 (1)	$	1,107,333		$	97,080		$	56,838		$	30,771		$	1,292,022

(1) Excludes amounts related to held-for-sale operations.

(2) Represents amounts reclassified (net) as held-for-sale assets related to the WS&A business. See Note 2 — Acquisitions and Divestitures for additional information.

(3) Finite-lived intangible assets are amortized using the straight-line method over the following periods: Customer relationships—4 to 13 years; Software—3 to 7 years; Content—1.5 to 5 years; and Other—2 to 5 years.

Amortization expense related to finite-lived intangible assets was $51.6 million and $6.3 million during the three months ended March 31, 2018 and 2017, respectively. The estimated future amortization expense by year for finite-lived intangible assets is as follows (in thousands):

2018 (remaining nine months)	$	138,953
2019	135,868
2020	129,461
2021	108,979
2022	99,363
Thereafter	635,147
	$	1,247,771

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Debt

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Debt

Debt

2016 Credit Agreement

The Company has a credit facility that provides for a $1.5 billion Term loan A facility, a $500.0 million Term loan B facility, and a $1.2 billion revolving credit facility (the "2016 Credit Agreement"). The 2016 Credit Agreement contains certain customary restrictive loan covenants, including, among others, financial covenants that apply a maximum leverage ratio and a minimum interest expense coverage ratio, and covenants limiting Gartner’s ability to incur indebtedness, grant liens, make acquisitions, merge, dispose of assets, pay dividends, repurchase stock, make investments and enter into certain transactions with affiliates. The Company was in full compliance with the covenants as of March 31, 2018.

The Term loan A facility is being repaid in 16 consecutive quarterly installments that commenced on June 30, 2017, plus a final payment to be made on March 20, 2022. The revolving credit facility may be borrowed, repaid, and re-borrowed through March 20, 2022, at which time all amounts must be repaid. Amounts borrowed under the Term loan A facility and the revolving credit facility bear interest at a rate equal to, at the Company's option, either:

(i) the greatest of: (x) the Administrative Agent’s prime rate; (y) the average rate on Federal Reserve Board of New York rate plus 1/2 of 1%; and (z) the eurodollar rate (adjusted for statutory reserves) plus 1%, in each case plus a margin equal to between 0.125% and 1.50% depending on Gartner’s consolidated leverage ratio as of the end of the four consecutive fiscal quarters most recently ended; or

(ii) the eurodollar rate (adjusted for statutory reserves) plus a margin equal to between 1.125% and 2.50%, depending on Gartner’s leverage ratio as of the end of the four consecutive fiscal quarters most recently ended.

The Term loan B facility will mature on April 5, 2024 and amounts outstanding thereunder will bear interest at a rate per annum equal to, at the option of Gartner, (i) adjusted LIBOR plus 2.00% or (ii) an alternate base rate plus 1.00%. The Term loan B facility is being repaid in 28 consecutive quarterly installments that commenced on June 30, 2017, plus a final payment to be made on April 5, 2024.

Senior Notes

The Company has $800.0 million aggregate principal amount of 5.125% Senior Notes due 2025 (the “Senior Notes”). The Senior Notes were issued at an issue price of 100.00% and bear interest at a fixed rate of 5.125% per annum. Interest on the Senior Notes is payable on April 1 and October 1 of each year. The Senior Notes will mature on April 1, 2025.

The Company may redeem some or all of the Senior Notes at any time on or after April 1, 2020 for cash at the redemption prices set forth in the Note Indenture, plus accrued and unpaid interest to, but not including, the redemption date. Prior to April 1, 2020, the Company may redeem up to 40% of the aggregate principal amount of the Senior Notes with the proceeds of certain equity offerings at a redemption price of 105.125% plus accrued and unpaid interest to, but not including, the redemption date. In addition, the Company may redeem some or all of the Senior Notes prior to April 1, 2020, at a redemption price of 100% of the principal amount of the Senior Notes plus accrued and unpaid interest to, but not including, the redemption date, plus a “make-whole” premium. If the Company experiences specific kinds of change of control, it will be required to offer to purchase the Senior Notes at a price equal to 101% of the principal amount thereof plus accrued and unpaid interest.

Outstanding Borrowings

The following table summarizes the Company’s total outstanding borrowings as of the dates indicated (in thousands):

	March 31,			December 31,
Description:	2018			2017
2016 Credit Agreement - Term loan A facility (1)	$	1,410,750		$	1,429,312
2016 Credit Agreement - Term loan B facility (1)	495,000			496,250
2016 Credit Agreement - Revolving credit facility (1), (2)	310,000			595,000
Senior Notes (3)	800,000			800,000
Other (4)	2,385			2,500
Principal amount outstanding (5)	$	3,018,135		$	3,323,062
Less: deferred financing fees (6)	(42,350		)	(44,217		)
Net balance sheet carrying amount (7)	$	2,975,785		$	3,278,845

(1) The contractual annualized interest rate as of March 31, 2018 on the Term loan A and B facilities was 3.88%, which consisted of a floating eurodollar base rate of 1.88% plus a margin of 2.00%. The contractual annualized interest rate on the revolving credit facility was 4.38%, which consisted of a floating eurodollar base rate of 1.88% plus a margin of 2.50%. However, the Company has interest rate swap contracts which effectively convert the floating eurodollar base rates on a portion of the amounts outstanding to a fixed base rate.

(2) The Company had $866.0 million of available borrowing capacity on the revolver (not including the expansion feature) as of March 31, 2018.

(3) Consists of $800.0 million principal amount of Senior Notes outstanding. The Senior Notes pay a fixed rate of 5.125% and mature on April 1, 2025.

(4) Consists of a $2.5 million State of Connecticut economic development loan with a 3.00% fixed rate of interest. The loan was originated in 2012 and has a 10 year maturity. Principal payments are deferred for the first five years and the loan may be repaid at any time by the Company without penalty.

(5) The average annual effective rate on the Company's total debt outstanding for the three months ended March 31, 2018, including the effect of its interest rate swaps discussed below, was 4.14%.

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

(7) On April 30, 2018, the Company repaid $400.0 million of the Term loan B facility and $50.0 million of the revolving credit facility.

Interest Rate Swaps

The Company has fixed-for-floating interest rate swap contracts which it designates as accounting hedges of the forecasted interest payments on the Company’s variable rate borrowings. The Company pays base fixed rates on the swaps and in return receives a floating eurodollar base rate on 30 day notional borrowings. The Company accounts for the interest rate swaps as cash flow hedges in accordance with FASB ASC Topic 815. Since the swaps hedge forecasted interest payments, changes in the fair value of the swaps are recorded in accumulated other comprehensive income (loss), a component of equity, as long as the swaps continue to be highly effective hedges of the designated interest rate risk. Any ineffective portion of change in the fair value of the hedges is recorded in earnings. All of the Company's swaps were highly effective hedges of the forecasted interest payments as of March 31, 2018. The interest rate swaps had a total positive fair value (asset) to the Company of $17.3 million at March 31, 2018, which is deferred and recorded in Accumulated other comprehensive income, net of tax effect.

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Equity

3 Months Ended

Mar. 31, 2018

Stockholders' Equity Note [Abstract]

Equity

Equity

Share Repurchase Authorization

The Company has a $1.2 billion board approved authorization to repurchase the Company's common stock, of which $1.1 billion remained available as of March 31, 2018. The Company may repurchase its common stock from time to time in amounts and at prices 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, private transactions or other transactions and will be funded from cash on hand and borrowings under the Company’s credit arrangement.

The Company’s recent share repurchase activity is presented in the following table:

	Three Months Ended
	March 31,
	2018		2017
Number of shares repurchased (1), (2)	239,268		218,752
Cash paid for repurchased shares (in thousands)	$	28,394	$	21,978

(1) The average purchase price for repurchased shares was $118.73 and $100.47 for the three months ended March 31, 2018 and 2017, respectively.

(2) All of the shares repurchased in both quarterly periods related to the settlement of the Company's share-based compensation awards.

Accumulated Other Comprehensive Income (Loss), net ("AOCI/L")

The following tables disclose information about changes in AOCI/L by component and the related amounts reclassified out of AOCI/L to income during the periods indicated (net of tax, in thousands) (1):

For the three months ended March 31, 2018:

	Interest Rate Swaps		Defined Benefit Pension Plans			Foreign Currency Translation Adjustments		Total
Balance – December 31, 2017	$	2,483	$	(5,861	)	$	4,886	$	1,508
Changes during the period:
Change in AOCI/L before reclassifications to income	9,365		—			20,547		29,912
Reclassifications from AOCI/L to income during the period (2), (3)	749		56			—		805
Other comprehensive income for the period	10,114		56			20,547		30,717
Balance – March 31, 2018	$	12,597	$	(5,805	)	$	25,433	$	32,225

For the three months ended March 31, 2017:

	Interest Rate Swaps			Defined Benefit Pension Plans			Foreign Currency Translation Adjustments			Total
Balance – December 31, 2016	$	(1,409	)	$	(5,797	)	$	(42,477	)	$	(49,683	)
Changes during the period:
Change in AOCI/L before reclassifications to income	(3,393		)	—			4,371			978
Reclassifications from AOCI/L to income during the period (2), (3)	825			48			—			873
Other comprehensive income (loss) for the period	(2,568		)	48			4,371			1,851
Balance – March 31, 2017	$	(3,977	)	$	(5,749	)	$	(38,106	)	$	(47,832	)

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

(2) The reclassifications related to interest rate swaps (cash flow hedges) were recorded in Interest expense, net of tax effect. See Note 10 – Derivatives and Hedging for information regarding the hedges.

(3) The reclassifications related to defined benefit pension plans were recorded in Selling, general and administrative expense, net of tax effect. See Note 12 – Employee Benefits for information regarding the Company’s defined benefit pension plans.

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Income Taxes

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The provision for income taxes for the three months ended March 31, 2018 was a benefit of $(23.3) million on a pretax loss of $(42.9) million compared to an expense of $12.1 million on pretax income of $48.5 million in the three months ended March 31, 2017. The effective income tax rate was 54.3% for the three months ended March 31, 2018 and 24.9% for the same period in 2017.

The quarter-over-quarter change in the effective income tax rate was primarily attributable to the relative impact of stock-based compensation benefits quarter-over-quarter. The tax benefits from stock-based compensation during the first quarter of 2018 increased the tax rate on pretax losses while such benefits in the first quarter of 2017 decreased the tax rate on pretax income. In addition to the impact of stock-based compensation, the change in the effective income tax rate quarter-over-quarter was driven by a reduction in the U.S. tax rate effective for 2018 as well as tax benefits recognized in 2018 for unrealized capital losses on the divestiture of the CEB Talent Assessment business.

The Tax Cuts and Jobs Act (the "Act”) was enacted on December 22, 2017. Among other things, the Act reduces the U.S. federal corporation tax rate from 35% to 21%, requires companies to pay a one-time transition tax on accumulated deferred foreign income (“ADFI”) of foreign subsidiaries that were previously tax deferred and creates a new tax on global intangible low-taxed income (“GILTI”) attributable to foreign subsidiaries. As of March 31, 2018, we have not completed our accounting for the tax effects of enactment of the Act because all of the necessary information is not currently available, prepared or analyzed. As such, the amounts we have recorded are provisional estimates and as permitted by the SEC per Staff Accounting Bulletin No. 118. We expect to complete the accounting for the impact of tax reform by the fourth quarter of 2018 as we complete our analysis and receive additional guidance from the Internal Revenue Service pertaining to the Act.

Companies have the option to account for the GILTI tax as a period cost in the period incurred, or to recognize deferred taxes for temporary differences including outside basis differences expected to reverse as a result of the GILTI provisions. The Company has not yet determined its policy election with respect to GILTI. We have, however, included an estimate of the current year GILTI impact in the 2018 tax provision calculation.

Upon enactment of the Act, we remeasured U.S. deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21% and recorded a provisional amount which reduced our 2017 income tax expense by $123.2 million. We are still analyzing certain aspects of the Act and refining our deferred tax calculations, which could affect the measurement of these balances or give rise to new deferred tax amounts. We did not adjust the initial provisional amount in the three months ended March 31, 2018.

The tax on ADFI is based on post-1986 earnings and profits ("E&P") of our foreign subsidiaries that were previously deferred from U.S. income taxes. We recorded a provisional amount for this one-time transition tax liability, resulting in an increase in income tax expense of $63.6 million in 2017. We have not yet completed our calculation of the tax on ADFI given the need to obtain, prepare and analyze various information relevant to such calculation including, but not limited to, our post-1986 E&P, foreign taxes and amounts held in cash or other specified assets on various measurement dates. We did not adjust the initial provisional amount in the three months ended March 31, 2018.

As of March 31, 2018 and December 31, 2017, the Company had gross unrecognized tax benefits of $63.2 million and $60.3 million, respectively. It is reasonably possible that gross unrecognized tax benefits will decrease by approximately $8.0 million within the next 12 months, due to the anticipated closure of audits and the expiration of certain statutes of limitation.

In July 2015, the United States Tax Court (the “Court”) issued an opinion relating to the treatment of stock-based compensation expense in an inter-company cost-sharing arrangement. In its opinion, the Court held that affiliated companies may exclude stock-based compensation expense from their cost-sharing arrangement. The Internal Revenue Service is appealing the decision. Because of uncertainty related to the final resolution of this litigation and the recognition of potential benefits to the Company, the Company has not recorded any financial statement benefit associated with this decision. The Company will monitor developments related to this case and the potential impact of those developments on the Company’s consolidated financial statements.

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Derivatives and Hedging

3 Months Ended

Mar. 31, 2018

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 following tables provide information regarding the Company’s outstanding derivatives contracts as of the dates indicated (in thousands, except for number of outstanding contracts):

March 31, 2018
Derivative Contract Type	Number of Outstanding Contracts	Notional Amounts		Fair Value Asset (Liability), Net (3)			Balance Sheet Line Item	Unrealized Gain Recorded in AOCI/L
Interest rate swaps (1)	5	$	1,400,000	$	17,314		Other assets	$	12,597
Foreign currency forwards (2)	46	313,425		(495		)	Accrued liabilities	—
Total	51	$	1,713,425	$	16,819			$	12,597

December 31, 2017
Derivative Contract Type	Number of Outstanding Contracts	Notional Amounts		Fair Value Asset (Liability), Net (3)		Balance Sheet Line Item	Unrealized Gain Recorded in AOCI/L
Interest rate swaps (1)	5	$	1,400,000	$	3,412	Other assets	$	2,483
Foreign currency forwards (2)	137	686,764		448		Other current assets	—
Total	142	$	2,086,764	$	3,860		$	2,483

(1) The swaps have been designated and are accounted for as cash flow hedges of the forecasted interest payments on borrowings. As a result, changes in the fair value of the swaps are deferred and recorded in AOCI/L, net of tax effect (see Note 7 — Debt for additional information).

(2) The Company has foreign exchange transaction risk since 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 since the Company does not designate these contracts as hedges for accounting purposes. All of the outstanding contracts at March 31, 2018 matured by the end of April 2018.

(3) See Note 11 — Fair Value Disclosures for the determination of the fair value of these instruments.

At March 31, 2018, 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 following table provides information regarding amounts recognized in the Condensed Consolidated Statements of Operations for derivative contracts for the periods indicated (in thousands):

	Three Months Ended
	March 31,
Amount recorded in:	2018			2017
Interest expense (1)	$	945		$	1,375
Other (gain) loss, net (2)	(7,232		)	219
Total (income) expense, net	$	(6,287	)	$	1,594

(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.

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Fair Value Disclosures

3 Months Ended

Mar. 31, 2018

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 accruals which are normally short-term in nature. The Company believes the carrying amounts of these financial instruments reasonably approximate their fair value due to their short-term nature. The Company’s financial instruments also include its outstanding variable-rate borrowings under the 2016 Credit Agreement. The Company believes the carrying amount of its variable-rate borrowings reasonably approximates their fair value because the rate of interest on those borrowings reflects 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 consolidated balance sheets.

FASB ASC Topic 820 provides a framework for the measurement of fair value and a valuation hierarchy based upon the transparency of inputs used in the valuation of assets and liabilities. Classification within the hierarchy is based upon 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. The Company does not currently utilize Level 3 valuation inputs to remeasure any of its assets or liabilities. However, Level 3 inputs may be used by the Company in its required annual impairment review of recorded goodwill. Information regarding the periodic assessment of the Company’s goodwill is included in Note 6 — Goodwill and Intangible Assets. The Company does not typically transfer assets or liabilities between different levels of the fair value hierarchy.

The following table presents the fair value of certain financial assets and liabilities (in thousands):

Description:	March 31, 2018		December 31, 2017
Assets:
Values based on Level 1 inputs:
Deferred compensation plan assets (1)	$	16,746	$	29,108
Total Level 1 inputs	16,746		29,108
Values based on Level 2 inputs:
Deferred compensation plan assets (1)	59,477		59,017
Foreign currency forward contracts (2)	156		2,053
Interest rate swap contracts (3)	17,314		3,412
Total Level 2 inputs	76,947		64,482
Total Assets	$	93,693	$	93,590
Liabilities:
Values based on Level 2 inputs:
Deferred compensation plan liabilities (1)	$	73,172	$	89,900
Foreign currency forward contracts (2)	651		1,605
Senior Notes due 2025 (4)	801,640		837,560
Total Level 2 inputs	875,463		929,065
Total Liabilities	$	875,463	$	929,065

(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 and mutual funds, and company-owned life insurance contracts, all of which are valued based on Level 1 or Level 2 valuation 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 10 - Derivatives and Hedging). Valuation of the foreign currency forward contracts is based on observable foreign currency exchange rates in active markets, which the Company considers a Level 2 input.

(3) The Company has interest rate swap contracts which hedge the risk of variability from interest payments on its borrowings (see Note 7 — Debt). The fair value of the swaps is based on mark-to-market valuations prepared by a third-party broker. The valuations are based on observable interest rates from recently executed market transactions and other observable market data, which the Company considers Level 2 inputs. The Company independently corroborates the reasonableness of the valuations prepared by the third-party broker through the use of an electronic quotation service.

(4) As discussed in Note 7 — Debt, the Company has $800.0 million of principal amount fixed-rate Senior Notes due in 2025. The estimated fair value of the notes was derived from quoted market prices provided by an independent dealer which the Company considers to be a Level 2 input.

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Employee Benefits

3 Months Ended

Mar. 31, 2018

Retirement Benefits [Abstract]

Employee Benefits

Employee Benefits

Defined-Benefit Pension Plans

The Company has defined-benefit pension plans in several of its international locations. Benefits paid under these plans are based on years of service and level of employee compensation. The Company’s defined-benefit pension plans are accounted for in accordance with FASB ASC Topics 715 and 960. Net periodic pension expense was $0.7 million for both the three months ended March 31, 2018 and 2017.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Contingencies

The Company is involved in legal proceedings and litigation arising in the ordinary course of business. We believe 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 our financial position, cash flows, or results of operations when resolved in a future period.

The Company has various agreements that may obligate us 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 we customarily agree to hold the other party harmless against losses arising from a breach of representations related to such matters 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 us under these agreements have not been material. As of March 31, 2018, the Company did not have any material payment obligations under any such indemnification agreements.

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Subsequent Event

3 Months Ended

Mar. 31, 2018

Subsequent Events [Abstract]

Subsequent Event

Subsequent Events

In April 2018, the Company sold its CEB Talent Assessment and CEB Workforce Survey and Analytics businesses. These two businesses were acquired in April 2017 with the CEB acquisition and were reported by the Company in the Talent Assessment & Other segment. Additional information regarding these divestitures is included in Note 2 — Acquisitions and Divestitures.

In addition, on April 30, 2018, the Company repaid $450.0 million of its outstanding debt. Note 7 — Debt provides additional information regarding the Company's debt obligations.

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Business and Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

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 the Financial Accounting Standards Board ("FASB") Accounting Standards Codification (“ASC”) Topic 270 for interim financial information and with the applicable instructions of the 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 filed in its Annual Report on Form 10-K for the year ended December 31, 2017. 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 months ended March 31, 2018 may not be indicative of the results of operations for the remainder of 2018 or beyond.

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 significant 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 our estimates and actual results could be material and would be reflected in the Company’s consolidated financial statements in future periods.

Adoption of new accounting standards and Accounting standards issued but not yet adopted

Adoption of new accounting standards. The Company adopted the accounting standards described below during the three months ended March 31, 2018:

Stock Compensation Award Modifications — On January 1, 2018, the Company adopted ASU No. 2017-09, "Compensation—Stock Compensation - Scope of Modification Accounting" ("ASU No. 2017-09"). ASU No. 2017-09 provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. The adoption of ASU No. 2017-09 had no impact on the Company's consolidated financial statements.

Retirement Benefits Cost Presentation — On January 1, 2018, the Company adopted ASU No. 2017-07, "Compensation—Retirement Benefits" ("ASU No. 2017-07"). ASU No. 2017-07 improves the reporting of net benefit cost in the financial statements, and provides additional guidance on the presentation of net benefit cost in the income statement and clarifies the components eligible for capitalization. The adoption of ASU No. 2017-07 had an immaterial impact on the classification of benefit expense on the Company's Condensed Consolidated Statements of Operations.

Partial Sales of Non-financial Assets — On January 1, 2018, the Company adopted ASU No. 2017-05, "Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Non-financial Assets" ("ASU No. 2017-05"). ASU No. 2017-05 clarifies the scope of the FASB’s recently established guidance on non-financial asset de-recognition as well as the accounting for partial sales of non-financial assets. It conforms the de-recognition guidance on non-financial assets with the model for revenue transactions. The adoption of ASU No. 2017-05 had no impact on the Company's consolidated financial statements.

Definition of a Business — On January 1, 2018, the Company adopted ASU No. 2017-01, "Clarifying the Definition of a Business" ("ASU No. 2017-01"). ASU No. 2017-01 changes the U.S. GAAP definition of a business. Such change can impact the accounting for asset purchases, acquisitions, goodwill impairment and other assessments. The adoption of ASU No. 2017-01 had no impact on the Company's consolidated financial statements.

Presentation of Restricted Cash — On January 1, 2018, the Company adopted ASU No. 2016-18, "Restricted Cash" ("ASU No. 2016-18"). ASU No. 2016-18 requires that amounts generally described as restricted cash and restricted cash equivalents be presented with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts presented on an entity's statement of cash flows. ASU No. 2016-18 must be applied using a retrospective transition method to each comparative period presented in an entity's financial statements.

As a result of the adoption of ASU No. 2016-18, the Company's restricted cash balances are now included in the beginning-of-period and end-of-period total amounts presented on the accompanying Condensed Consolidated Statements of Cash Flows. When compared to the Company's previously issued statement of cash flows for the three months ended March 31, 2017, the adoption of ASU No. 2016-18 resulted in: (i) a reduction of $18.2 million in cash used in investing activities; (ii) an increase of $43.3 million in the end-of-period total cash amount; and (iii) an increase of $25.1 million in the beginning-of-period total cash amount. Below is a table reconciling the beginning-of-period and end-of-period total cash amounts included in the Condensed Consolidated Balance Sheets to the amounts presented in the Condensed Consolidated Cash Flow Statements (in thousands).

	March 31,				December 31,
	2018		2017		2017		2016
Cash and cash equivalents	$	189,979	$	1,227,891	$	538,908	$	474,233
Restricted cash classified in (1), (2):
Prepaid expenses and other current assets	18,143		25,121		15,148		25,121
Other assets	—		18,150		3,002		—
Cash classified as held-for-sale (3)	19,508		—		10,000		—
Cash and cash equivalents and restricted cash per the Condensed Consolidated Statements of Cash Flows	$	227,630	$	1,271,162	$	567,058	$	499,354

(1) Restricted cash pertains to escrow accounts established in connection with certain of the Company's business acquisitions. Generally, such cash is restricted to use due to provisions contained in the underlying asset purchase agreement. The Company will disburse the restricted cash to the sellers of the businesses upon satisfaction of any contingencies described in such agreements (e.g., potential indemnification claims, etc.).

(2) Restricted cash is recorded in Prepaid expenses and other current assets and Other assets in the Company's consolidated balance sheets with the short-term or long-term classification dependent on the projected timing of disbursements to the sellers.

(3) Represents cash classified as a held-for-sale asset for certain businesses that were acquired as part of the CEB acquisition. See Note 2 — Acquisitions and Divestitures for additional information.

Income Taxes — On January 1, 2018, the Company adopted ASU No. 2016-16, "Intra-Entity Transfers of Assets Other Than Inventory" ("ASU No. 2016-16"). ASU No. 2016-16 accelerates the recognition of taxes on certain intra-entity transactions. U.S. GAAP previously required deferral of the income tax implications of an intercompany sale of assets until the assets were sold to a third party or recovered through use. Under ASU No. 2016-16, the seller’s tax effects and the buyer’s deferred taxes on asset transfers are immediately recognized upon the sale.

Pursuant to the transition rules in ASU No. 2016-16, any taxes attributable to pre-2018 intra-entity transfers that were previously deferred should be accelerated and recorded to accumulated earnings on the date of adoption. As a result of this transition rule, certain of the Company's balance sheet income tax accounts pertaining to pre-2018 intra-entity transfers, which aggregated $13.7 million, were reversed against accumulated earnings on January 1, 2018. ASU No. 2016-16 could have a material post-adoption impact on the Company's consolidated financial statements, depending on the nature, size and tax consequences of future intra-entity transfers, if any. However, ASU 2016-16 had no impact on the Company's operating results during the three months ended March 31, 2018.

Statement of Cash Flows — On January 1, 2018, the Company adopted ASU No. 2016-15, "Classification of Certain Cash Receipts and Cash Payments" ("ASU No. 2016-15"). ASU No. 2016-15 sets forth classification requirements for certain cash flow transactions. The adoption of ASU No. 2016-15 had no impact on the Company's consolidated financial statements.

Financial Instruments Recognition and Measurement — On January 1, 2018, the Company adopted ASU No. 2016-01, "Financial Instruments Overall - Recognition and Measurement of Financial Assets and Liabilities" ("ASU No. 2016-01") to address certain aspects of recognition, measurement, presentation and disclosure of financial instruments. Among the significant changes required by ASU No. 2016-01 is that equity investments are to be measured at fair value with changes in fair value recognized in net income. The adoption of ASU No. 2016-01 had no impact on the Company's consolidated financial statements.

Revenue Recognition — On January 1, 2018, the Company adopted ASU No. 2014-09, "Revenue from Contracts with Customers" ("ASU No. 2014-09"). The adoption of the standard did not have a material impact on the Company's accounting policies or consolidated financial statements. However, as required by ASU No. 2014-09, the Company's disclosures around revenue recognition have been significantly expanded.

Accounting standards issued but not yet adopted. The FASB has issued accounting standards that have not yet become effective and may impact the Company’s consolidated financial statements or related disclosures in future periods. These standards and their potential impact are discussed below:

Accounting standards effective in 2019

Certain Tax Effects Stranded In Accumulated Other Comprehensive Income — In February 2018, the FASB issued ASU No. 2018-02, "Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income" ("ASU No. 2018-02"). ASU No. 2018-02 provides an entity with the option to reclassify to retained earnings the tax effects from items that have been stranded in accumulated other comprehensive income as a result of the Tax Cuts and Jobs Act of 2017 (the “Act”). Upon adoption, ASU No. 2018-02 requires an entity to make new disclosures, including whether or not the entity elected to reclassify the tax effects related to the Act and the entity’s accounting policy for releasing the income tax effects from accumulated other comprehensive income for all other items (i.e., those not pertaining to the Act). Entities may adopt ASU No. 2018-02 using one of two transition methods: (i) retrospective to each period wherein the income tax effects of the Act related to items remaining in accumulated other comprehensive income are recognized or (ii) at the beginning of the period of adoption. ASU No. 2018-02 is effective for Gartner on January 1, 2019; however, early adoption is permitted. We are currently evaluating the potential impact of ASU No. 2018-02 on the Company's consolidated financial statements but no material impact is expected at adoption.

Targeted Improvements to Accounting for Hedging Activities - In August 2017, the FASB issued ASU No. 2017-12, "Derivatives and Hedging ("ASU No. 2017-12"). ASU No. 2017-12 is intended to improve the financial reporting of hedging relationships to better portray economic results of an entity’s risk management activities in its financial statements. In addition to that main objective, the standard makes certain targeted improvements to simplify the application of the hedge accounting guidance in current U.S. GAAP. ASU No. 2017-12 is effective for Gartner on January 1, 2019. We are currently evaluating the impact of ASU No. 2017-12 on the Company's consolidated financial statements.

Distinguishing Liabilities from Equity — In July 2017, the FASB issued ASU No. 2017-11, "Earnings Per Share, Distinguishing Liabilities from Equity, and Derivatives and Hedging" ("ASU No. 2017-11"). ASU No. 2017-11 is intended to simplify the accounting for financial instruments with characteristics of liabilities and equity. Among the issues addressed are: (i) determining whether an instrument (or embedded feature) is indexed to an entity’s own stock; (ii) distinguishing liabilities from equity for mandatorily redeemable financial instruments of certain nonpublic entities; and (iii) identifying mandatorily redeemable non-controlling interests. ASU No. 2017-11 is effective for Gartner on January 1, 2019. We are currently evaluating the potential impact of ASU No. 2017-11 on the Company's consolidated financial statements.

Leases — In February 2016, the FASB issued ASU No. 2016-02, "Leases" ("ASU No. 2016-02"), which will require significant changes in the accounting and disclosure for lease arrangements. Under current U.S. GAAP, lease arrangements that meet certain criteria are considered operating leases and are not recorded on an entity's balance sheet. Because all of our existing lease arrangements are accounted for as operating leases, they are not recorded on the Company's balance sheet. ASU No. 2016-02 will significantly change the accounting for leases because a right-of-use ("ROU") model will be used wherein a lessee must record an ROU asset and a lease liability on its balance sheet for leases with initial terms longer than 12 months. Under ASU No. 2016-02, leases will be classified as either finance or operating arrangements, with such classification affecting the pattern of expense recognition in an entity's income statement. ASU No. 2016-02 also requires expanded disclosures about leasing arrangements. ASU No. 2016-02 will be effective for Gartner on January 1, 2019. We are currently evaluating the potential impact of ASU No. 2016-02 on our consolidated financial statements.

Accounting standards effective in 2020

Goodwill Impairment — In January 2017, the FASB issued ASU No. 2017-04, "Intangibles—Goodwill and Other - Simplifying the Test for Goodwill Impairment" ("ASU No. 2017-04"). ASU No. 2017-04 simplifies the determination of the amount of goodwill to be potentially charged off by eliminating Step 2 of the goodwill impairment test under current U.S. GAAP. ASU No. 2017-04 is effective for Gartner on January 1, 2020. The adoption of ASU No. 2017-04 is currently not expected to have a material impact on the Company's consolidated financial statements.

Financial Instrument Credit Losses — In June 2016, the FASB issued ASU No. 2016-13, "Financial Instruments—Credit Losses" ("ASU No. 2016-13"). ASU No. 2016-13 amends the current financial instrument impairment model by requiring entities to use a forward-looking approach based on expected losses to estimate credit losses on certain types of financial instruments, including trade receivables. ASU No. 2016-13 is effective for Gartner on January 1, 2020, with early adoption permitted. We are currently evaluating the potential impact of ASU No. 2016-13 on our consolidated financial statements.

The FASB continues to work on a number of other significant accounting standards which, if issued, could materially impact the Company's accounting policies and disclosures in future periods. As these standards have not yet been issued, the effective dates and potential impact are unknown.

Revenue Recognition

Our business and our revenues

Gartner delivers its principal products and services globally through four business segments: Research, Events, Consulting and Talent Assessment & Other. Our revenues by business segment are discussed below:

Research

Research provides trusted, objective insights and advice on the mission-critical priorities of leaders across all functional areas of an enterprise through research and other reports, briefings, proprietary tools, access to our analysts, peer networking services and membership programs that enable our clients to make better decisions. Gartner's traditional strengths in information technology (“IT”), marketing and supply chain research were enhanced in 2017 with Gartner's acquisition of CEB Inc. ("CEB"), which added CEB's best practice and talent management research insights across a range of business functions, to include human resources, finance, sales and legal.

Research revenues are mainly derived from subscription contracts for research products, representing approximately 90% of the segment’s revenue. The related revenues are deferred and recognized ratably over the applicable contract term (i.e., as we provide the service over the contract period). Fees derived from assisting organizations in selecting the right business software for their needs are recognized at a point in time (i.e., when the lead is provided to the vendor).

The Company enters into subscription contracts for research products that generally are for twelve-month periods or longer. Approximately 65% of our annual and multi-year Research subscription contracts provide for billing of the first annual period upon signing. In subsequent years, multi-year subscription contracts are normally billed prior to the contract’s anniversary date. Our other Research subscription contracts are usually invoiced in advance, commencing with the contract signing, on (i) a quarterly, monthly or other recurring basis or (ii) in accordance with a customized invoicing schedule. Research contracts are generally non-cancelable and non-refundable, except for government contracts that may have cancellation or fiscal funding clauses, which historically have not produced material cancellations. It is our policy to record the amount of a subscription contract that is billable as a fee receivable at the time the contract is signed with a corresponding amount as deferred revenue because the contract represents a legally enforceable claim.

Events

Events provides business professionals across an organization with the opportunity to learn, share and network. From our flagship Chief Information Officer event, Gartner Symposium/ITxpo, to industry-leading conferences focused on specific business roles and topics, to member-driven sessions, our events enable attendees to experience the best of Gartner insight and advice live.

We earn revenues from both the attendees and exhibitors at our events. Attendees are generally invoiced for the full attendance fee upon their completion of an online registration form or their signing of a contract, while exhibitors typically make several individual payments commencing with the signing of a contract. We collect almost all of the invoiced amounts in advance of the related event, resulting in the recording of deferred revenue. We recognize both the attendee and exhibitor revenue as we satisfy our related performance obligations (i.e., when the related symposium, conference, summit or exhibition is held).

The Company defers certain costs directly related to its events and expenses those costs in the period during which the related symposium, conference or exhibition occurs. The Company's policy is to defer only those costs, primarily prepaid site and production services costs, which are incremental and are directly attributable to a specific event. Other costs of organizing and producing our events, primarily Company personnel and non-event specific expenses, are expensed in the period incurred. At the end of each fiscal quarter, the Company assesses, on an event-by-event basis, whether the expected direct costs of producing a scheduled event will exceed the expected revenues. If such costs are expected to exceed revenues, the Company records the expected loss in the period determined.

Consulting

Consulting provides customized solutions to unique client needs through on-site, day-to-day support, as well as proprietary tools for measuring and improving IT performance with a focus on cost, performance, efficiency and quality, and contract optimization services.

Consulting revenues, primarily derived from custom consulting and measurement services, are principally generated from fixed fee or time and materials engagements. Revenues from fixed fee engagements are recognized on a proportional performance basis, while revenues from time and material engagements are recognized as work is delivered and/or services are provided. In both of these circumstances, we satisfy our performance obligations and control of the services are passed to our customers over time (i.e., during the duration of the contract or consulting engagement). On a contract-by-contract basis, we typically use actual labor hours incurred compared to total expected labor hours to measure the Company’s proportional performance in respect of our fixed fee engagements. If our labor and other costs on an individual contract are expected to exceed the total contract value or the contract’s funded ceiling amount, the Company reflects an adjustment to the contract’s overall profitability in the period determined. Revenues related to contract optimization engagements are contingent in nature and are only recognized at a point in time when all of the conditions related to their payment have been satisfied.

Consulting customers are invoiced based on the specific terms and conditions in their underlying contracts. We typically invoice our Consulting customers after we have satisfied some or all of the related performance obligation and the related revenue has been recognized. We record fees receivable for amounts that are billed or billable. We also record contract assets, which represent amounts for which we have recognized revenue but lack the unconditional right to payment as of the balance sheet date due to our required continued performance under the relevant contract, progress billing milestones, or other billing-related restrictions. The Company’s contract assets are discussed below.

Talent Assessment & Other

The Talent Assessment & Other segment helps organizations assess, engage, manage and improve talent. These services are provided through knowledge and skills assessments, training programs, workshops, and survey and questionnaire services.

Talent Assessment & Other segment revenues arising from knowledge and skills assessment services are recognized based on the nature of the underlying contract: (i) ratably over the term of the service period; (ii) upon delivery; or (iii) on a proportional performance basis. Revenues from training programs, workshops, and survey and questionnaire products are primarily recognized upon delivery of the service.

In April 2018, the Company sold its CEB Talent Assessment and CEB Workforce Survey and Analytics businesses, which were reported in the Talent Assessment & Other segment. Note 2 - Acquisitions and Divestitures provides additional information regarding these divestitures.

Overview of ASU No. 2014-09

ASU No. 2014-09 requires a five-step evaluative process that consists of:

(1) Identifying the contract with the customer;

(2) Identifying the performance obligations in the contract;

(3) Determining the transaction price for the contract;

(4) Allocating the transaction price to the performance obligations in the contract; and

(5) Recognizing revenue when (or as) performance obligations are satisfied.

ASU No. 2014-09 is intended to clarify the principles for recognizing revenue by removing inconsistencies and weaknesses in existing revenue recognition rules; provide a more robust framework for addressing revenue recognition issues; improve comparability of revenue recognition practices across entities, industries, jurisdictions and capital markets; and provide more useful information to users of financial statements through improved disclosures.

The Company adopted ASU No. 2014-09 using the modified retrospective method of adoption. Under this method of adoption, the cumulative effect of applying the new standard is recorded at the date of initial application, with no restatement of the comparative prior periods presented. The adoption of ASU No. 2014-09 did not result in a cumulative effect adjustment to the Company's Accumulated earnings in its consolidated financial statements. However, the adoption of the new standard required reclassifications of certain amounts presented in the Company’s consolidated balance sheet. As of January 1, 2018, these items were (i) the reclassification of certain fees receivable that met the definition of a contract asset, aggregating $26.7 million, from Fees receivable, net to Prepaid expenses and other current assets; and (ii) the reclassification of a refund liability, aggregating $6.2 million, from the allowance for fees receivable to Accounts payable and accrued liabilities.

Related to our adoption of ASU No. 2014-09, we elected to (i) apply the provisions of this new accounting guidance only to contracts that were not completed at the date of initial application and (ii) utilize a practical expedient whereby we reflected the aggregate effect of all contract modifications that occurred prior to January 1, 2018 (rather than retrospectively restating the affected contracts) when identifying our satisfied and unsatisfied performance obligations, determining the transaction prices with our customers, and allocating such transaction prices to our satisfied and unsatisfied performance obligations. These two elections had no financial impact.

Prior to January 1, 2018, the Company recognized revenue in accordance with then-existing U.S. GAAP and SEC Staff Accounting Bulletin No. 104, "Revenue Recognition" (“prior GAAP”). Under both ASU No. 2014-09 and prior GAAP, revenue can only be recognized when all of the required criteria are met. Although there were some minor changes to the Company’s revenue recognition policies and procedures effective January 1, 2018 with the adoption of ASU No. 2014-09, there were no material differences between the timing and amount of revenues recognized under ASU No. 2014-09 and prior GAAP. The accompanying Condensed Consolidated Statements of Operations present revenues net of any sales or value-added taxes that we collect from customers and remit to government authorities.

ASU No. 2014-09 requires that we assess at inception all of the promises in a customer contract to determine if a promise is a separate performance obligation. To identify our performance obligations, we consider all of the services promised in a customer contract, regardless of whether they are explicitly stated or are implied by customary business practices. If we conclude that a service is separately identifiable and distinct from the other offerings in a contract, we account for such a promise as a separate performance obligation.

If a customer contract has more than one performance obligation, then the total contract consideration is allocated among the separate deliverables based on their stand-alone selling prices, which are determined based on the prices at which the Company discretely sells the stand-alone services. If a contract includes a discount or other pricing concession, the transaction price is allocated among the performance obligations on a proportionate basis using the relative stand-alone selling prices of the individual deliverables being transferred to the customer, unless the discount or other pricing concession can be ascribed to specifically identifiable performance obligations.

The contracts with our customers delineate the final terms and conditions of the underlying arrangement, including product descriptions, subscription periods, deliverables, quantity and price of each service purchased. Since the transaction price of almost all of our customer contracts is typically agreed upon upfront and generally does not fluctuate during the duration of the contract, variable consideration is insignificant. The Company may engage in certain financing transactions with customers but these arrangements have been limited in number and not material.

Required Disclosures under ASU No. 2014-09

ASU No. 2014-09 requires significantly expanded disclosures around the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. These additional disclosures are provided below:

Disaggregated Revenues

We believe that disaggregating the Company’s revenues by primary geographic location and the timing of when revenue is recognized achieves the disclosure objectives in ASU No. 2014-09. Our disaggregated revenue information by reportable segment is presented for the periods indicated in the tables below (in thousands).

Three Months Ended March 31, 2018

	Research		Events		Consulting		Talent Assessment & Other		Total
Primary Geographic Markets: (1)
United States and Canada	$	489,713	$	24,069	$	45,129	$	34,594	$	593,505
Europe, Middle East and Africa	184,547		16,891		29,938		28,290		259,666
Other International	89,664		5,127		7,829		7,774		110,394
Total revenues	$	763,924	$	46,087	$	82,896	$	70,658	$	963,565

Three Months Ended March 31, 2017

	Research		Events		Consulting		Talent Assessment & Other		Total
Primary Geographic Markets: (1)
United States and Canada	$	327,492	$	17,663	$	47,832	$	—	$	392,987
Europe, Middle East and Africa	115,802		14,095		23,823		—		153,720
Other International	68,012		3,511		6,939		—		78,462
Total revenues	$	511,306	$	35,269	$	78,594	$	—	$	625,169

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

Three Months Ended March 31, 2018

	Research		Events		Consulting		Talent Assessment & Other		Total
Timing of Revenue Recognition:
Transferred over time (1)	$	701,096	$	—	$	74,010	$	58,946	$	834,052
Transferred at a point in time (2)	62,828		46,087		8,886		11,712		129,513
Total revenues	$	763,924	$	46,087	$	82,896	$	70,658	$	963,565

Three Months Ended March 31, 2017

	Research		Events		Consulting		Talent Assessment & Other		Total
Timing of Revenue Recognition:
Transferred over time (1)	$	466,706	$	—	$	64,994	$	—	$	531,700
Transferred at a point in time (2)	44,600		35,269		13,600		—		93,469
Total revenues	$	511,306	$	35,269	$	78,594	$	—	$	625,169

(1) These Research revenues were recognized in connection with performance obligations that were satisfied over time using a time-elapsed output method to measure progress. The corresponding Consulting revenues were recognized over time using labor hours as an input measurement basis. Talent Assessment & Other revenues in this category were recognized using either a time-elapsed output method, performance-based milestone approach or labor hours, depending on the nature of the underlying customer contract.

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

Determining a measure of progress for performance obligations that are satisfied over time and when control transfers for performance obligations that are satisfied at a point in time requires us to make judgments that affect the timing of when revenue is recognized. A key factor in this determination is when the customer is able to direct the use of, and can obtain substantially all of the benefits from, the deliverable.

For performance obligations recognized in accordance with a time-elapsed output method, the Company’s efforts are expended consistently throughout the contractual period and the Company transfers control evenly by providing stand-ready services. For performance obligations satisfied under our Consulting fixed fee and time and materials engagements, we believe that labor hours are the best measure of depicting the Company’s progress because labor output corresponds directly to the value of the Company’s performance to date as control is transferred. In our Talent Assessment & Other segment, we select a method to assess the completion of our performance obligations that best aligns with the specific characteristics of the individual customer contract. We believe that these methods to measure progress provide a reasonable and supportable determination as to when we transfer control over these services to our customers.

For customer contracts that are greater than one year in duration, the aggregate amount of the transaction price allocated to performance obligations that are unsatisfied (or partially unsatisfied) as of March 31, 2018 was approximately $2.1 billion. The Company expects to recognize $1,060.6 million, $856.7 million and $209.8 million of this revenue (most of which pertains to Research) during the remainder of 2018, the year ending December 31, 2019 and thereafter, respectively. The Company applies the practical expedient allowed in ASU No. 2014-09 and, accordingly, it does not disclose such performance obligation information for customer contracts that have original durations of one year or less.

Customer Contract Assets and Liabilities

The timing of the recognition of revenues, the amount and timing of our billings and cash collections, as well as upfront customer payments, result in the recording of both assets and liabilities on our Condensed Consolidated Balance Sheets.

The payment terms and conditions in our customer contracts vary. In some cases, customers prepay and, in other cases, after we conduct a credit evaluation, payment may be due in arrears. Because the timing of the delivery of our services typically differs from the timing of customer payments, the Company recognizes either a contract asset (we perform either fully or partially under the contract but a contingency remains) or a contract liability (upfront customer payments precede our performance, resulting in deferred revenue). Amounts recorded as contract assets are reclassified to fees receivable when all of the outstanding conditions have been resolved and our right to payment becomes unconditional. Contracts with payments due in arrears are also recognized as fees receivable. As our contractual performance obligations are satisfied over time or at a point in time, the Company correspondingly relieves its contract liabilities and records the associated revenue.

The table below provides information regarding certain of the Company’s balance sheet accounts that pertain to its contracts with customers, to exclude our held-for-sale businesses (in thousands):

	March 31,		December 31,
	2018		2017
Assets:
Fees receivable, gross (1)	$	1,142,064	$	1,162,871
Contract assets (2)	$	27,593	$	26,672
Contract liabilities:
Deferred revenues (current liability) (3)	$	1,719,637	$	1,630,198
Non-current deferred revenues (3)	16,139		16,205
Total contract liabilities	$	1,735,776	$	1,646,403

(1) Fees receivable represent the unconditional right of payment from our customers and includes both billed and unbilled amounts.

(2) Contract assets represent recognized revenue for which we do not have an unconditional right to payment as of the balance sheet date because the project may be subject to a progress milestone or some other billing restriction. In the accompanying Condensed Consolidated Balance Sheets, contract assets are recorded in Prepaid expenses and other current assets as of March 31, 2018 and Fees receivable, net as of December 31, 2017.

(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 our performance obligation(s).

During the three months ended March 31, 2018, the Company recognized $605.5 million of revenue that was attributable to deferred revenues that were recorded at December 31, 2017. Such amount primarily consisted of (i) Research and Talent Assessment & Other revenue that was recognized ratably as control of the goods or services passed to the customer and (ii) Events revenue pertaining to symposia, conferences, summits or exhibitions that occurred during the calendar quarter. During the three months ended March 31, 2018, the Company recorded no material impairments related to its contract assets. The Company does not in the normal course of business recognize revenues from performance obligations satisfied in prior periods.

Allowance for Losses and Revenue Reserves

As of December 31, 2017, the Company maintained an allowance for losses that included a bad debt allowance and a revenue reserve. Provisions to the Company’s allowance for losses were charged against earnings as either a reduction in revenues or an increase in expense.

Effective with the adoption of ASU No. 2014-09 on January 1, 2018, the allowance for losses, which is classified as an offset to the gross amount of fees receivable, and the related charge against earnings (i.e., bad debt expense) is now comprised solely of estimated uncollectible fees receivable due to credit and other associated risks. The revenue reserve previously reported as part of the allowance for losses has been reclassified and is now reported as a liability in accordance with ASU No. 2014-09. The revenue reserve is maintained for amounts deemed to be uncollectible for reasons other than bad debt. The amount of the revenue reserve is based on past experience and current estimates. As of March 31, 2018, the revenue reserve balance was $6.9 million and adjustments to the account during the three months ended March 31, 2018 were not significant.

The determination of the allowance for losses is based on historical loss experience, an assessment of current economic conditions, the aging of outstanding receivables, the financial health of specific clients and probable losses. This evaluation is inherently judgmental and requires the use of estimates. The allowance for losses is periodically re-evaluated and adjusted as more information about the ultimate collectability of fees receivable becomes available. Circumstances that could cause the allowance for losses to increase include changes in our clients’ liquidity and credit quality, other factors negatively impacting our clients’ ability to pay their obligations as they come due, and the effectiveness of our collection efforts.

Costs of obtaining and fulfilling a customer contract

Upon the signing of a customer contract, the Company capitalizes the related commission as a recoverable direct incremental cost of obtaining the underlying contract and records a corresponding commission payable. No other amounts are capitalized as a cost of obtaining or fulfilling a customer contract because no expenditures have been identified that meet the requisite capitalization criteria. For Research, Consulting and Talent Assessment & Other, we generally use the straight-line method of amortization for deferred commissions over a period that is based on the projected recoverability for such costs, using factors such as the underlying contract period, the timing of when the corresponding revenues will be earned, and the anticipated term of the engagement. For Events, deferred commissions are expensed during the period when the related event occurs.

Under all circumstances, deferred commissions are amortized over a period that does not exceed one year. During the three months ended March 31, 2018 and 2017, such amortization expense was $75.9 million and $50.2 million, respectively, and was included in Selling, general and administrative expense in the accompanying Condensed Consolidated Statements of Operations. The Company recorded no material impairments of its deferred commissions during either the three months ended March 31, 2018 or 2017.

Acquisitions

Acquisitions

The Company accounts for business acquisitions in accordance with the acquisition method of accounting as prescribed by FASB ASC Topic 805, Business Combinations. The acquisition method of accounting requires the Company to record the net assets and liabilities acquired based on their estimated fair values as of the acquisition date, with any excess of the consideration transferred over the estimated fair value of the net assets acquired, including identifiable intangible assets, to be recorded to goodwill. Under the acquisition method, the operating results of acquired companies are included in the Company's consolidated financial statements beginning on the date of acquisition.

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Business and Basis of Presentation Business and Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Cash and Cash Equivalents

Below is a table reconciling the beginning-of-period and end-of-period total cash amounts included in the Condensed Consolidated Balance Sheets to the amounts presented in the Condensed Consolidated Cash Flow Statements (in thousands).

	March 31,				December 31,
	2018		2017		2017		2016
Cash and cash equivalents	$	189,979	$	1,227,891	$	538,908	$	474,233
Restricted cash classified in (1), (2):
Prepaid expenses and other current assets	18,143		25,121		15,148		25,121
Other assets	—		18,150		3,002		—
Cash classified as held-for-sale (3)	19,508		—		10,000		—
Cash and cash equivalents and restricted cash per the Condensed Consolidated Statements of Cash Flows	$	227,630	$	1,271,162	$	567,058	$	499,354

(1) Restricted cash pertains to escrow accounts established in connection with certain of the Company's business acquisitions. Generally, such cash is restricted to use due to provisions contained in the underlying asset purchase agreement. The Company will disburse the restricted cash to the sellers of the businesses upon satisfaction of any contingencies described in such agreements (e.g., potential indemnification claims, etc.).

(2) Restricted cash is recorded in Prepaid expenses and other current assets and Other assets in the Company's consolidated balance sheets with the short-term or long-term classification dependent on the projected timing of disbursements to the sellers.

(3) Represents cash classified as a held-for-sale asset for certain businesses that were acquired as part of the CEB acquisition. See Note 2 — Acquisitions and Divestitures for additional information.

Schedule of Restricted Cash

Below is a table reconciling the beginning-of-period and end-of-period total cash amounts included in the Condensed Consolidated Balance Sheets to the amounts presented in the Condensed Consolidated Cash Flow Statements (in thousands).

	March 31,				December 31,
	2018		2017		2017		2016
Cash and cash equivalents	$	189,979	$	1,227,891	$	538,908	$	474,233
Restricted cash classified in (1), (2):
Prepaid expenses and other current assets	18,143		25,121		15,148		25,121
Other assets	—		18,150		3,002		—
Cash classified as held-for-sale (3)	19,508		—		10,000		—
Cash and cash equivalents and restricted cash per the Condensed Consolidated Statements of Cash Flows	$	227,630	$	1,271,162	$	567,058	$	499,354

(1) Restricted cash pertains to escrow accounts established in connection with certain of the Company's business acquisitions. Generally, such cash is restricted to use due to provisions contained in the underlying asset purchase agreement. The Company will disburse the restricted cash to the sellers of the businesses upon satisfaction of any contingencies described in such agreements (e.g., potential indemnification claims, etc.).

(2) Restricted cash is recorded in Prepaid expenses and other current assets and Other assets in the Company's consolidated balance sheets with the short-term or long-term classification dependent on the projected timing of disbursements to the sellers.

(3) Represents cash classified as a held-for-sale asset for certain businesses that were acquired as part of the CEB acquisition. See Note 2 — Acquisitions and Divestitures for additional information.

Schedule of Disaggregation of Revenue by Reportable Segment

Our disaggregated revenue information by reportable segment is presented for the periods indicated in the tables below (in thousands).

Three Months Ended March 31, 2018

	Research		Events		Consulting		Talent Assessment & Other		Total
Primary Geographic Markets: (1)
United States and Canada	$	489,713	$	24,069	$	45,129	$	34,594	$	593,505
Europe, Middle East and Africa	184,547		16,891		29,938		28,290		259,666
Other International	89,664		5,127		7,829		7,774		110,394
Total revenues	$	763,924	$	46,087	$	82,896	$	70,658	$	963,565

Three Months Ended March 31, 2017

	Research		Events		Consulting		Talent Assessment & Other		Total
Primary Geographic Markets: (1)
United States and Canada	$	327,492	$	17,663	$	47,832	$	—	$	392,987
Europe, Middle East and Africa	115,802		14,095		23,823		—		153,720
Other International	68,012		3,511		6,939		—		78,462
Total revenues	$	511,306	$	35,269	$	78,594	$	—	$	625,169

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

Schedule of Disaggregation of Revenue

Three Months Ended March 31, 2018

	Research		Events		Consulting		Talent Assessment & Other		Total
Timing of Revenue Recognition:
Transferred over time (1)	$	701,096	$	—	$	74,010	$	58,946	$	834,052
Transferred at a point in time (2)	62,828		46,087		8,886		11,712		129,513
Total revenues	$	763,924	$	46,087	$	82,896	$	70,658	$	963,565

Three Months Ended March 31, 2017

	Research		Events		Consulting		Talent Assessment & Other		Total
Timing of Revenue Recognition:
Transferred over time (1)	$	466,706	$	—	$	64,994	$	—	$	531,700
Transferred at a point in time (2)	44,600		35,269		13,600		—		93,469
Total revenues	$	511,306	$	35,269	$	78,594	$	—	$	625,169

(1) These Research revenues were recognized in connection with performance obligations that were satisfied over time using a time-elapsed output method to measure progress. The corresponding Consulting revenues were recognized over time using labor hours as an input measurement basis. Talent Assessment & Other revenues in this category were recognized using either a time-elapsed output method, performance-based milestone approach or labor hours, depending on the nature of the underlying customer contract.

(2) The revenues in this category were recognized in connection with performance obligations that were satisfied at the point in time the contractual deliverables were 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, to exclude our held-for-sale businesses (in thousands):

	March 31,		December 31,
	2018		2017
Assets:
Fees receivable, gross (1)	$	1,142,064	$	1,162,871
Contract assets (2)	$	27,593	$	26,672
Contract liabilities:
Deferred revenues (current liability) (3)	$	1,719,637	$	1,630,198
Non-current deferred revenues (3)	16,139		16,205
Total contract liabilities	$	1,735,776	$	1,646,403

(1) Fees receivable represent the unconditional right of payment from our customers and includes both billed and unbilled amounts.

(2) Contract assets represent recognized revenue for which we do not have an unconditional right to payment as of the balance sheet date because the project may be subject to a progress milestone or some other billing restriction. In the accompanying Condensed Consolidated Balance Sheets, contract assets are recorded in Prepaid expenses and other current assets as of March 31, 2018 and Fees receivable, net as of December 31, 2017.

(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 our performance obligation(s).

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Acquisitions and Divestitures (Tables)

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Summary of amounts related to new building

The following table presents a summary of the activity related to our accrual for exit costs at all of our facilities for the quarter ended March 31, 2018 (in thousands):

Liability balance at December 31, 2017	$	12,961
Charges and adjustments, net	44,230
Payments	(4,734		)
Liability balance at March 31, 2018 (1)	$	52,457

(1) In total, we estimate that we will make net cash payments of approximately $61.2 million for exit costs in connection with the activities described herein. Through March 31, 2018, in the aggregate, we have expensed $57.3 million and paid $4.9 million related to such activities.

Principal components of held-for-sale assets and liabilities

The principal components of the held-for-sale assets and liabilities for these businesses are summarized in the table below (in thousands):

	March 31, 2018 (1)		December 31, 2017 (1)
Cash and cash equivalents	$	19,508	$	10,000
Fees receivable, net	49,191		50,928
Goodwill	246,661		212,994
Intangible assets, net	264,145		250,472
Other assets (2)	23,849		18,571
Total assets held-for-sale	$	603,354	$	542,965
Accounts payable and accrued liabilities	$	26,467	$	32,388
Deferred revenues	65,846		61,450
Other liabilities	51,644		52,007
Total liabilities held-for-sale	$	143,957	$	145,845

(1) March 31, 2018 includes both the CEB Talent Assessment business and the WS&A business. December 31, 2017 includes the CEB Talent Assessment business only.

(2) Other assets includes property, equipment and leasehold improvements, net.

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Computation of Net (Loss) Income per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Schedule of basic and diluted (loss) earnings per share calculations

The following table sets forth the calculation of basic and diluted (loss) income per share (in thousands, except per share data):

	Three Months Ended
	March 31,
	2018			2017
Numerator:
Net (loss) income used for calculating basic and diluted (loss) income per common share	$	(19,587	)	$	36,433
Denominator:
Weighted average common shares used in the calculation of basic (loss) income per share	91,005			82,835
Common stock equivalents associated with stock-based compensation plans (1), (2)	—			1,260
Shares used in the calculation of diluted (loss) income per share	91,005			84,095
Basic (loss) income per share	$	(0.22	)	$	0.44
Diluted (loss) income per share	$	(0.22	)	$	0.43

(1) For the three months ended March 31, 2017, certain common stock equivalents were not included in the computation of diluted income per share because the effect would have been anti-dilutive. These common share equivalents totaled less than 0.4 million for the 2017 period presented.

(2) For the three months ended March 31, 2018, approximately 1.3 million common stock equivalents were completely excluded from the calculation of diluted (loss) per share because they were anti-dilutive.

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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2018

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of stock-based compensation expense by award type

The Company recognized the following stock-based compensation expense by award type and expense category line item during the periods indicated (in millions):

	Three Months Ended
	March 31,
Award type	2018		2017
Stock appreciation rights	$	3.5	$	2.8
Restricted stock units	27.2		19.6
Common stock equivalents	0.2		0.2
Total (1)	$	30.9	$	22.6

(1) Includes charges of $17.8 million and $14.5 million during the three months ended March 31, 2018 and 2017, respectively, for awards to retirement-eligible employees. Those awards vest on an accelerated basis.

Schedule of stock-based compensation expense by expense category

	Three Months Ended
	March 31,
Expense category line item	2018		2017
Cost of services and product development	$	11.4	$	9.3
Selling, general and administrative	18.2		13.3
Acquisition and integration charges (2)	1.3		—
Total (1)	$	30.9	$	22.6

(1) Includes charges of $17.8 million and $14.5 million during the three months ended March 31, 2018 and 2017, respectively, for awards to retirement-eligible employees. Those awards vest on an accelerated basis.

(2) These charges are primarily the result of the acceleration of the vesting of certain restricted stock units related to the CEB acquisition.

Schedule of fair value assumptions of SARs

The fair value of a SARs award is determined on the date of grant using the Black-Scholes-Merton valuation model with the following weighted average assumptions:

	Three Months Ended
	March 31,
	2018		2017
Expected dividend yield (1)	—	%	—	%
Expected stock price volatility (2)	21	%	22	%
Risk-free interest rate (3)	2.5	%	1.8	%
Expected life in years (4)	4.5		4.5

(1) The expected dividend yield assumption was based on both the Company's historical and anticipated dividend payouts. Historically, the Company has not paid cash dividends on its Common Stock.

(2) The determination of expected stock price volatility was based on both historical Common Stock prices and implied volatility from publicly traded options in the Common Stock.

(3) The risk-free interest rate was based on the yield of a U.S. Treasury security with a maturity similar to the expected life of the award.

(4) The expected life represents the Company’s estimate of the weighted average period of time the SARs are expected to be outstanding (that is, the period between the service inception date and the expected exercise date).

Stock appreciation rights

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of summary of the changes in SARS, RSUs, and CSEs outstanding

The following table summarizes changes in SARs outstanding during the three months ended March 31, 2018:

	Stock Appreciation Rights ("SARs") (in millions)	Per Share Weighted Average Exercise Price		Per Share Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Term (Years)
Outstanding at December 31, 2017	1.2	$	76.73	$	17.35	4.28
Granted	0.3	114.26		25.63		6.86
Outstanding at March 31, 2018 (1) (2)	1.5	85.06		19.15		4.70
Vested and exercisable at March 31, 2018 (2)	0.8	$	70.96	$	16.39	3.56

(1) As of March 31, 2018, 0.7 million of the total SARs outstanding were unvested. The Company expects that substantially all of those unvested awards will vest in future periods.

(2) As of March 31, 2018, the total SARs outstanding had an intrinsic value of $47.6 million. On such date, SARs vested and exercisable had an intrinsic value of $35.1 million.

Restricted stock units

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of summary of the changes in SARS, RSUs, and CSEs outstanding

The following table summarizes the changes in RSUs outstanding during the three months ended March 31, 2018:

	Restricted Stock Units ("RSUs") (in millions)		Per Share Weighted Average Grant Date Fair Value
Outstanding at December 31, 2017	1.5		$	91.47
Granted (1)	0.7		114.33
Vested and released	(0.6	)	86.21
Outstanding at March 31, 2018 (2) (3)	1.6		$	101.52

(1) The 0.7 million of RSUs granted during the three months ended March 31, 2018 consisted of 0.3 million of performance-based RSUs awarded to executives and 0.4 million of service-based RSUs awarded to non-executive employees. The performance-based awards include RSUs in final settlement of 2017 grants and approximately 0.2 million of RSUs representing the target amount of the grant for the year ending December 31, 2018 that is tied to an increase in Gartner's total contract value for 2018. Total contract value for this determination represents the value attributable to all of Gartner's subscription-related revenue contracts. The number of performance-based RSUs that will ultimately be awarded for 2018 ranges from 0% to 200% of the target amount and will be finalized based on the actual increase in Gartner's total contract value for 2018 as measured on December 31, 2018. If the specified minimum level of achievement is not met, the performance-based RSUs pertaining to 2018 will be forfeited in their entirety and any previously recorded compensation expense will be reversed.

(2) The Company expects that substantially all of the RSUs outstanding will vest in future periods.

(3) As of March 31, 2018, the weighted average remaining contractual term of the RSUs outstanding was approximately 1.8 years.

Common stock equivalents

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of summary of the changes in SARS, RSUs, and CSEs outstanding

The following table summarizes the changes in CSEs outstanding during the three months ended March 31, 2018:

	Common Stock Equivalents ("CSEs")		Per Share Weighted Average Grant Date Fair Value
Outstanding at December 31, 2017	110,013		$	23.19
Granted	1,624		116.06
Converted to shares of Common Stock upon grant	(998	)	124.94
Outstanding at March 31, 2018	110,639		$	23.59

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Schedule of segment reporting information, by segment

The following tables present operating information about the Company’s reportable segments for the periods indicated (in thousands):

Three Months Ended March 31, 2018	Research		Events		Consulting		Talent Assessment & Other (1)		Consolidated
Revenues	$	763,924	$	46,087	$	82,896	$	70,658	$	963,565
Gross contribution	531,456		16,190		24,124		43,044		614,814
Corporate and other expenses									(623,525		)
Operating loss									$	(8,711	)

Three Months Ended March 31, 2017	Research		Events		Consulting		Talent Assessment & Other		Consolidated
Revenues (2)	$	511,306	$	35,269	$	78,594	$	—	$	625,169
Gross contribution (2)	351,113		13,567		23,937		—		388,617
Corporate and other expenses									(335,103		)
Operating income									$	53,514

(1) In April 2018, the Company sold its CEB Talent Assessment and CEB Workforce Survey and Analytics businesses. These two businesses were acquired in April 2017 with the CEB acquisition. The results of these businesses are included in the Talent Assessment & Other segment results for the three months ended March 31, 2018. Additional information regarding these divestitures is included in Note 2 — Acquisitions and Divestitures.

(2) In 2017, the Company began reporting the results of its Strategic Advisory Services ("SAS") business in Research whereas previously the SAS business was reported with Consulting. As a result, revenues of $6.7 million pertaining to the three months ended March 31, 2017 were reclassified from Consulting to Research to be comparable with the current year presentation. Gross contribution of $4.4 million for the three months ended March 31, 2017 was also reclassified from Consulting to Research.

Schedule of reconciliation of segment gross contribution to net income (loss)

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

	Three Months Ended
	March 31,
	2018			2017
Total segment gross contribution	$	614,814		$	388,617
Costs and expenses:
Cost of services and product development - unallocated (1)	8,458			1,057
Selling, general and administrative	487,745			304,244
Depreciation and amortization	68,056			16,530
Acquisition and integration charges	59,266			13,272
Operating (loss) income	(8,711		)	53,514
Interest expense and other, net	34,160			5,017
(Benefit) provision for income taxes	(23,284		)	12,064
Net (loss) income	$	(19,587	)	$	36,433

(1) The unallocated amounts consist of certain bonus and related fringe costs recorded in consolidated Cost of services and product development expense that are not allocated to segment expense. The Company's policy is to only allocate bonus and related fringe charges to segments for up to 100% of the segment employee's target bonus. Amounts above 100% are absorbed by corporate.

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Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of changes to the carrying amount of goodwill by reporting unit

The following table presents changes to the carrying amount of goodwill by segment during the three months ended March 31, 2018 (in thousands):

	Research			Events			Consulting		Talent Assessment & Other			Total
Balance at December 31, 2017 (1), (2)	$	2,619,677		$	187,920		$	97,798	$	81,899		$	2,987,294
Reclassified as held-for-sale (3)	—			—			—		(20,547		)	(20,547		)
Foreign currency translation impact and other (4)	(17,958		)	(170		)	528		7,495			(10,105		)
Balance at March 31, 2018	$	2,601,719		$	187,750		$	98,326	$	68,847		$	2,956,642

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

(2) Excludes certain amounts related to held-for-sale operations.

(3) Represents amounts reclassified as held-for-sale assets related to the CEB Talent Assessment and WS&A businesses. See Note 2 — Acquisitions and Divestitures for additional information.

(4) Includes the foreign currency translation impact and certain measurement period adjustments related to the acquisition of CEB in April 2017.

Schedule of amortizable intangible assets

The following tables present reconciliations of the carrying amounts of the Company's finite-lived intangible assets as of the dates indicated (in thousands):

March 31, 2018	Customer Relationships			Software			Content			Other			Total
Gross cost at December 31, 2017 (1)	$	1,200,316		$	123,424		$	104,313		$	54,929		$	1,482,982
Write-off of fully amortized intangible assets	—			—			(228		)	—			(228		)
Reclassified as held-for-sale (2)	(7,170		)	(321		)	(241		)	(39		)	(7,771		)
Foreign currency translation impact	15,218			491			251			(171		)	15,789
Gross cost	1,208,364			123,594			104,095			54,719			1,490,772
Accumulated amortization (3)	(119,075		)	(32,410		)	(63,778		)	(27,738		)	(243,001		)
Balance at March 31, 2018 (1)	$	1,089,289		$	91,184		$	40,317		$	26,981		$	1,247,771

December 31, 2017	Customer Relationships			Software			Content			Other			Total
Gross cost (1)	$	1,200,316		$	123,424		$	104,313		$	54,929		$	1,482,982
Accumulated amortization (3)	(92,983		)	(26,344		)	(47,475		)	(24,158		)	(190,960		)
Balance at December 31, 2017 (1)	$	1,107,333		$	97,080		$	56,838		$	30,771		$	1,292,022

(1) Excludes amounts related to held-for-sale operations.

(2) Represents amounts reclassified (net) as held-for-sale assets related to the WS&A business. See Note 2 — Acquisitions and Divestitures for additional information.

(3) Finite-lived intangible assets are amortized using the straight-line method over the following periods: Customer relationships—4 to 13 years; Software—3 to 7 years; Content—1.5 to 5 years; and Other—2 to 5 years.

Schedule of estimated future amortization expense by year

The estimated future amortization expense by year for finite-lived intangible assets is as follows (in thousands):

2018 (remaining nine months)	$	138,953
2019	135,868
2020	129,461
2021	108,979
2022	99,363
Thereafter	635,147
	$	1,247,771

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Debt (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Schedule of debt

The following table summarizes the Company’s total outstanding borrowings as of the dates indicated (in thousands):

	March 31,			December 31,
Description:	2018			2017
2016 Credit Agreement - Term loan A facility (1)	$	1,410,750		$	1,429,312
2016 Credit Agreement - Term loan B facility (1)	495,000			496,250
2016 Credit Agreement - Revolving credit facility (1), (2)	310,000			595,000
Senior Notes (3)	800,000			800,000
Other (4)	2,385			2,500
Principal amount outstanding (5)	$	3,018,135		$	3,323,062
Less: deferred financing fees (6)	(42,350		)	(44,217		)
Net balance sheet carrying amount (7)	$	2,975,785		$	3,278,845

(1) The contractual annualized interest rate as of March 31, 2018 on the Term loan A and B facilities was 3.88%, which consisted of a floating eurodollar base rate of 1.88% plus a margin of 2.00%. The contractual annualized interest rate on the revolving credit facility was 4.38%, which consisted of a floating eurodollar base rate of 1.88% plus a margin of 2.50%. However, the Company has interest rate swap contracts which effectively convert the floating eurodollar base rates on a portion of the amounts outstanding to a fixed base rate.

(2) The Company had $866.0 million of available borrowing capacity on the revolver (not including the expansion feature) as of March 31, 2018.

(3) Consists of $800.0 million principal amount of Senior Notes outstanding. The Senior Notes pay a fixed rate of 5.125% and mature on April 1, 2025.

(4) Consists of a $2.5 million State of Connecticut economic development loan with a 3.00% fixed rate of interest. The loan was originated in 2012 and has a 10 year maturity. Principal payments are deferred for the first five years and the loan may be repaid at any time by the Company without penalty.

(5) The average annual effective rate on the Company's total debt outstanding for the three months ended March 31, 2018, including the effect of its interest rate swaps discussed below, was 4.14%.

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

(7) On April 30, 2018, the Company repaid $400.0 million of the Term loan B facility and $50.0 million of the revolving credit facility.

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Equity (Tables)

3 Months Ended

Mar. 31, 2018

Stockholders' Equity Note [Abstract]

Schedule of share repurchase activity

The Company’s recent share repurchase activity is presented in the following table:

	Three Months Ended
	March 31,
	2018		2017
Number of shares repurchased (1), (2)	239,268		218,752
Cash paid for repurchased shares (in thousands)	$	28,394	$	21,978

(1) The average purchase price for repurchased shares was $118.73 and $100.47 for the three months ended March 31, 2018 and 2017, respectively.

(2) All of the shares repurchased in both quarterly periods related to the settlement of the Company's share-based compensation awards.

Schedule of the changes in Accumulated Other Comprehensive (Loss) Income by component (net of tax)

The following tables disclose information about changes in AOCI/L by component and the related amounts reclassified out of AOCI/L to income during the periods indicated (net of tax, in thousands) (1):

For the three months ended March 31, 2018:

	Interest Rate Swaps		Defined Benefit Pension Plans			Foreign Currency Translation Adjustments		Total
Balance – December 31, 2017	$	2,483	$	(5,861	)	$	4,886	$	1,508
Changes during the period:
Change in AOCI/L before reclassifications to income	9,365		—			20,547		29,912
Reclassifications from AOCI/L to income during the period (2), (3)	749		56			—		805
Other comprehensive income for the period	10,114		56			20,547		30,717
Balance – March 31, 2018	$	12,597	$	(5,805	)	$	25,433	$	32,225

For the three months ended March 31, 2017:

	Interest Rate Swaps			Defined Benefit Pension Plans			Foreign Currency Translation Adjustments			Total
Balance – December 31, 2016	$	(1,409	)	$	(5,797	)	$	(42,477	)	$	(49,683	)
Changes during the period:
Change in AOCI/L before reclassifications to income	(3,393		)	—			4,371			978
Reclassifications from AOCI/L to income during the period (2), (3)	825			48			—			873
Other comprehensive income (loss) for the period	(2,568		)	48			4,371			1,851
Balance – March 31, 2017	$	(3,977	)	$	(5,749	)	$	(38,106	)	$	(47,832	)

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

(2) The reclassifications related to interest rate swaps (cash flow hedges) were recorded in Interest expense, net of tax effect. See Note 10 – Derivatives and Hedging for information regarding the hedges.

(3) The reclassifications related to defined benefit pension plans were recorded in Selling, general and administrative expense, net of tax effect. See Note 12 – Employee Benefits for information regarding the Company’s defined benefit pension plans.

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Derivatives and Hedging (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of information regarding outstanding derivative contracts

The following tables provide information regarding the Company’s outstanding derivatives contracts as of the dates indicated (in thousands, except for number of outstanding contracts):

March 31, 2018
Derivative Contract Type	Number of Outstanding Contracts	Notional Amounts		Fair Value Asset (Liability), Net (3)			Balance Sheet Line Item	Unrealized Gain Recorded in AOCI/L
Interest rate swaps (1)	5	$	1,400,000	$	17,314		Other assets	$	12,597
Foreign currency forwards (2)	46	313,425		(495		)	Accrued liabilities	—
Total	51	$	1,713,425	$	16,819			$	12,597

December 31, 2017
Derivative Contract Type	Number of Outstanding Contracts	Notional Amounts		Fair Value Asset (Liability), Net (3)		Balance Sheet Line Item	Unrealized Gain Recorded in AOCI/L
Interest rate swaps (1)	5	$	1,400,000	$	3,412	Other assets	$	2,483
Foreign currency forwards (2)	137	686,764		448		Other current assets	—
Total	142	$	2,086,764	$	3,860		$	2,483

(1) The swaps have been designated and are accounted for as cash flow hedges of the forecasted interest payments on borrowings. As a result, changes in the fair value of the swaps are deferred and recorded in AOCI/L, net of tax effect (see Note 7 — Debt for additional information).

(2) The Company has foreign exchange transaction risk since 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 since the Company does not designate these contracts as hedges for accounting purposes. All of the outstanding contracts at March 31, 2018 matured by the end of April 2018.

(3) See Note 11 — Fair Value Disclosures for the determination of the fair value of these instruments.

Schedule of amounts recognized in statement of operations

The following table provides information regarding amounts recognized in the Condensed Consolidated Statements of Operations for derivative contracts for the periods indicated (in thousands):

	Three Months Ended
	March 31,
Amount recorded in:	2018			2017
Interest expense (1)	$	945		$	1,375
Other (gain) loss, net (2)	(7,232		)	219
Total (income) expense, net	$	(6,287	)	$	1,594

(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.

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Fair Value Disclosures (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities that are remeasured to fair value

The following table presents the fair value of certain financial assets and liabilities (in thousands):

Description:	March 31, 2018		December 31, 2017
Assets:
Values based on Level 1 inputs:
Deferred compensation plan assets (1)	$	16,746	$	29,108
Total Level 1 inputs	16,746		29,108
Values based on Level 2 inputs:
Deferred compensation plan assets (1)	59,477		59,017
Foreign currency forward contracts (2)	156		2,053
Interest rate swap contracts (3)	17,314		3,412
Total Level 2 inputs	76,947		64,482
Total Assets	$	93,693	$	93,590
Liabilities:
Values based on Level 2 inputs:
Deferred compensation plan liabilities (1)	$	73,172	$	89,900
Foreign currency forward contracts (2)	651		1,605
Senior Notes due 2025 (4)	801,640		837,560
Total Level 2 inputs	875,463		929,065
Total Liabilities	$	875,463	$	929,065

(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 and mutual funds, and company-owned life insurance contracts, all of which are valued based on Level 1 or Level 2 valuation 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 10 - Derivatives and Hedging). Valuation of the foreign currency forward contracts is based on observable foreign currency exchange rates in active markets, which the Company considers a Level 2 input.

(3) The Company has interest rate swap contracts which hedge the risk of variability from interest payments on its borrowings (see Note 7 — Debt). The fair value of the swaps is based on mark-to-market valuations prepared by a third-party broker. The valuations are based on observable interest rates from recently executed market transactions and other observable market data, which the Company considers Level 2 inputs. The Company independently corroborates the reasonableness of the valuations prepared by the third-party broker through the use of an electronic quotation service.

(4) As discussed in Note 7 — Debt, the Company has $800.0 million of principal amount fixed-rate Senior Notes due in 2025. The estimated fair value of the notes was derived from quoted market prices provided by an independent dealer which the Company considers to be a Level 2 input.

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Business and Basis of Presentation - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) segment country employee	Mar. 31, 2017 USD ($)	Jan. 01, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of organizations Company serves | employee	15,000
Number of countries in which entity operates | country	100
Number of reportable segments | segment	4
Segment Reporting Information [Line Items]
Cash used in investing activities	$ 16,679	$ 121,865
Cash and cash equivalents and restricted cash	$ 227,630	$ 1,271,162		$ 567,058	$ 499,354
Percent of subscription contracts billable upon signing for twelve months of service	65.00%
Restatement Adjustment | Accounting Standards Update 2016-18
Segment Reporting Information [Line Items]
Cash used in investing activities	$ 18,200
Cash and cash equivalents and restricted cash	$ 43,300			$ 25,100
Retained Earnings | Accounting Standards Update 2016-16
Segment Reporting Information [Line Items]
Cumulative effect of new accounting principle in period of adoption			$ 13,700
Revenue | Research | Product Concentration Risk
Segment Reporting Information [Line Items]
Percentage of segment revenues derived from subscription contracts	90.00%

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Business and Basis of Presentation - Schedule of Cash and Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	$ 189,979	$ 538,908	$ 1,227,891	$ 474,233
Restricted cash classified in:
Prepaid expenses and other current assets	18,143	15,148	25,121	25,121
Other assets	0	3,002	18,150	0
Cash and cash equivalents	19,508	10,000	0	0
Cash and cash equivalents and restricted cash	$ 227,630	$ 567,058	$ 1,271,162	$ 499,354

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Business and Basis of Presentation - Impact of Adoption of ASU 2014-09 (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Fees receivable	$ (1,134,964)		$ (1,176,843)
Prepaid expenses and other current assets	175,204		124,632
Allowance for doubtful accounts	(7,100)		(12,700)
Accounts payable and accrued liabilities	$ 532,538		$ 666,821
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Fees receivable		$ 26,700
Prepaid expenses and other current assets		26,700
Allowance for doubtful accounts		6,200
Accounts payable and accrued liabilities		$ 6,200

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Business and Basis of Presentation - Disaggregation of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	$ 963,565	$ 625,169
Research
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	763,924	511,306
Events
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	46,087	35,269
Consulting
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	82,896	78,594
Talent Assessment & Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	70,658	0
United States and Canada
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	593,505	392,987
United States and Canada | Research
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	489,713	327,492
United States and Canada | Events
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	24,069	17,663
United States and Canada | Consulting
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	45,129	47,832
United States and Canada | Talent Assessment & Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	34,594	0
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	259,666	153,720
Europe, Middle East and Africa | Research
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	184,547	115,802
Europe, Middle East and Africa | Events
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	16,891	14,095
Europe, Middle East and Africa | Consulting
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	29,938	23,823
Europe, Middle East and Africa | Talent Assessment & Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	28,290	0
Other International
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	110,394	78,462
Other International | Research
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	89,664	68,012
Other International | Events
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	5,127	3,511
Other International | Consulting
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	7,829	6,939
Other International | Talent Assessment & Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	$ 7,774	$ 0

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Business and Basis of Presentation - Timing Of Revenue Recognition Liabilities per Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	$ 963,565	$ 625,169
Transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	834,052	531,700
Transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	129,513	93,469
Research
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	763,924	511,306
Research | Transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	701,096	466,706
Research | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	62,828	44,600
Events
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	46,087	35,269
Events | Transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	0	0
Events | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	46,087	35,269
Consulting
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	82,896	78,594
Consulting | Transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	74,010	64,994
Consulting | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	8,886	13,600
Talent Assessment & Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	70,658	0
Talent Assessment & Other | Transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	58,946	0
Talent Assessment & Other | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customer	$ 11,712	$ 0

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Business and Basis of Presentation - Revenue Remaining Performance Obligation (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation	$ 1,060.6
Revenue, remaining performance obligation, expected timing of satisfaction period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation	$ 856.7
Revenue, remaining performance obligation, expected timing of satisfaction period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation	$ 2,100.0
Revenue, remaining performance obligation, expected timing of satisfaction period

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Business and Basis of Presentation - Schedule of Contract with Customer, Asset and Liability (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Assets:
Fees receivable, gross	$ 1,142,064		$ 1,162,871
Contract assets	27,593		26,672
Contract liabilities:
Deferred revenues (current liability)	1,719,637		1,630,198
Non-current deferred revenues	16,139		16,205
Total contract liabilities	1,735,776		$ 1,646,403
Revenue recognized previously attributable to deferred revenues	605,500
Revenue reserve balance	$ 6,900
Amortization of deferred sales commissions, amortization period	1 year
Amortization of deferred sales commissions	$ 75,900	$ 50,200

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Acquisitions and Divestitures (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Apr. 30, 2018	Apr. 03, 2018
Business Acquisition [Line Items]
Acquisition and integration charges	$ 59,266	$ 13,272
Talent Assessment | Disposal Group, Held-for-sale, Not Discontinued Operations
Business Acquisition [Line Items]
Disposal group, revenue	47,000
Disposal group, pre-tax income	$ 2,100
Subsequent Event | Talent Assessment | Disposal Group, Held-for-sale, Not Discontinued Operations
Business Acquisition [Line Items]
Disposal group, consideration received				$ 400,000
Subsequent Event | Workforce Surveys & Analytics | Disposal Group, Held-for-sale, Not Discontinued Operations
Business Acquisition [Line Items]
Disposal group, consideration received			$ 29,000

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Acquisitions and Divestitures - Summary of Exited Space Liability (Details) - CEB	3 Months Ended	12 Months Ended
	Mar. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)
Liability Related to Exited Space [Roll Forward]
Beginning liability balance	$ 12,961
Charges and adjustments, net	44,230,000	$ 57,300,000
Payments	(4,734,000)	(4,900,000)
Ending liability balance	52,457,000	52,457,000
Total anticipated exit costs	$ 61,200,000	$ 61,200,000

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Acquisitions and Divestitures - Disposals (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	$ 19,508	$ 10,000	$ 0	$ 0
Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	19,508	10,000
Fees receivable, net	49,191	50,928
Goodwill	246,661	212,994
Intangible assets, net	264,145	250,472
Other assets	23,849	18,571
Total assets held-for-sale	603,354	542,965
Accounts payable and accrued liabilities	26,467	32,388
Deferred revenues	65,846	61,450
Other liabilities	51,644	52,007
Total liabilities held-for-sale	$ 143,957	$ 145,845

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Computation of Net (Loss) Income per Share - Calculations Of Basic And Diluted (Loss) Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Numerator:
Net (loss) income used for calculating basic and diluted (loss) income per common share	$ (19,587)	$ 36,433
Denominator:
Weighted average number of common shares used in the calculation of basic (loss) income per share (in shares)	91,005	82,835
Common stock equivalents associated with stock-based compensation plans (in shares)	0	1,260
Shares used in the calculation of diluted (loss) income per share (in shares)	91,005	84,095
Basic (loss) income per share (in dollars per share)	$ (0.22)	$ 0.44
Diluted (loss) income per share (in dollars per share)	$ (0.22)	$ 0.43

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Computation of Net (Loss) Income per Share (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of (loss) income per share (less than) (in shares)	1.3	0.4

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Stock-Based Compensation (Details) - USD ($) $ / shares in Units, shares in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	4.9
Common stock par value (in dollars per share)	$ 0.0005		$ 0.0005
Total share-based compensation cost not yet recognized	$ 125,800,000
Total compensation cost not yet recognized, period for recognition	2 years 10 months 24 days
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase plan, stock purchases as percentage of employee compensation maximum	10.00%
Maximum share value authorized for purchase under employee stock purchase plan	$ 23,750
Exercisable price percentage of closing price of another class of stock	95.00%
Maximum number of shares that may be purchased by eligible participants (in shares)	0.8
Proceeds from stock plans	$ 4,100,000	$ 3,000,000

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Stock-Based Compensation - Stock-based Compensation Expense by Award Type and Expense Category (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 30.9	$ 22.6
Cost of services and product development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	11.4	9.3
Selling, general and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	18.2	13.3
Acquisition and integration charges
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	1.3	0.0
Stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	3.5	2.8
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	27.2	19.6
Common stock equivalents
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	0.2	0.2
Retirement eligible employees equity award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 17.8	$ 14.5

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Stock-Based Compensation - Summary Of Changes In SARs Outstanding (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation cost not yet recognized, period for recognition	2 years 10 months 24 days
Stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Award expiration period from date of grant	7 years
Total compensation cost not yet recognized, period for recognition	4 years
SARs [Roll Forward]
Outstanding at December 31, 2017 (in shares)	1.2
Granted (in shares)	0.3
Outstanding at March 31, 2018 (in shares)	1.5	1.2
Vested and exercisable at March 31, 2018 (in shares)	0.8
Aggregate Intrinsic value of outstanding shares	$ 47.6
Aggregate intrinsic value of shares vested and exercisable	$ 35.1
Per Share Weighted Average Exercise Price [Roll Forward]
Outstanding at December 31, 2017 (in dollars per share)	$ 76.73
Granted (in dollars per share)	114.26
Outstanding at March 31, 2018 (in dollars per share)	85.06	$ 76.73
Vested and exercisable at March 31, 2018 (in dollars per share)	70.96
Per Share Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding at December 31, 2017 (in dollars per share)	17.35
Granted (in dollars per share)	25.63
Outstanding at March 31, 2018 (in dollars per share)	19.15	$ 17.35
Vested and exercisable at March 31, 2018 (in dollars per share)	$ 16.39
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Remaining Contractual Term [Abstract]
Granted	6 years 10 months 10 days
Outstanding weighted average remaining contractual term	4 years 8 months 12 days	4 years 3 months 12 days
Vested and exercisable at March 31, 2018	3 years 6 months 22 days
Unvested | Stock appreciation rights
SARs [Roll Forward]
Outstanding at March 31, 2018 (in shares)	0.7

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Stock-Based Compensation - Weighted Average Assumptions Used To Determine Fair Value Of SARs Grants On Date Of Grant Using Black-Scholes (Details) - Stock appreciation rights	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected dividend yield	0.00%	0.00%
Expected stock price volatility	21.00%	22.00%
Risk-free interest rate	2.50%	1.80%
Expected life in years	4 years 6 months	4 years 6 months

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Stock-Based Compensation - Summary Of Changes In RSUs Outstanding (Details) shares in Millions	3 Months Ended
	Mar. 31, 2018 $ / shares shares
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Restricted Stock Units (RSUs) [Roll Forward]
Outstanding at December 31, 2017 (in shares)	1.5
Granted (in shares)	0.7
Vested and released (in shares)	(0.6)
Outstanding at March 31, 2018 (in shares)	1.6
Per Share Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding at December 31, 2017 (in dollars per share) | $ / shares	$ 91.47
Granted (in dollars per share) | $ / shares	114.33
Vested and released (in dollars per share) | $ / shares	86.21
Outstanding at March 31, 2018 (in dollars per share) | $ / shares	$ 101.52
Weighted average remaining contractual terms	1 year 9 months 18 days
Restricted stock units | Executive officer
Restricted Stock Units (RSUs) [Roll Forward]
Granted (in shares)	0.3
Restricted stock units | Executive officer | Minimum | Target amount
Per Share Weighted Average Grant Date Fair Value [Roll Forward]
Percentage of shares authorized for grant	0.00%
Restricted stock units | Executive officer | Maximum | Target amount
Per Share Weighted Average Grant Date Fair Value [Roll Forward]
Percentage of shares authorized for grant	200.00%
Restricted stock units | Non executive
Restricted Stock Units (RSUs) [Roll Forward]
Granted (in shares)	0.4
Performance-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Performance-based RSUs | Executive officer
Restricted Stock Units (RSUs) [Roll Forward]
Granted (in shares)	0.2

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Stock-Based Compensation - Summary Of Changes In CSEs Outstanding (Details) - Common stock equivalents	3 Months Ended
	Mar. 31, 2018 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Base fee percentage (up to)	50.00%
Common Stock Equivalents (CSEs) [Roll Forward]
Outstanding at December 31, 2017 (in shares) | shares	110,013
Granted (in shares) | shares	1,624
Converted to common shares upon grant (in shares) | shares	(998)
Outstanding at March 31, 2018 (in shares) | shares	110,639
Per Share Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding at December 31, 2017 (in dollars per share) | $ / shares	$ 23.19
Granted (in dollars per share) | $ / shares	116.06
Converted to common shares upon grant (in dollars per share) | $ / shares	124.94
Outstanding at March 31, 2018 (in dollars per share) | $ / shares	$ 23.59

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Segment Information - Information About Reportable Segments (Details)	3 Months Ended
	Mar. 31, 2018 USD ($) segment	Mar. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment	4
Number of reportable segments | segment	4
Revenues	$ 963,565,000	$ 625,169,000
Operating (loss) income	(8,711,000)	53,514,000
Intersegment revenues
Segment Reporting Information [Line Items]
Revenues	0	0
Reportable segments
Segment Reporting Information [Line Items]
Revenues	963,565,000	625,169,000
Gross contribution	614,814,000	388,617,000
Corporate and other expenses
Segment Reporting Information [Line Items]
Corporate and other expenses	(623,525,000)	(335,103,000)
Research
Segment Reporting Information [Line Items]
Revenues		6,700,000
Gross contribution		4,400,000
Research | Reportable segments
Segment Reporting Information [Line Items]
Revenues	763,924,000	511,306,000
Gross contribution	531,456,000	351,113,000
Events | Reportable segments
Segment Reporting Information [Line Items]
Revenues	46,087,000	35,269,000
Gross contribution	16,190,000	13,567,000
Consulting
Segment Reporting Information [Line Items]
Revenues		(6,700,000)
Gross contribution		(4,400,000)
Consulting | Reportable segments
Segment Reporting Information [Line Items]
Revenues	82,896,000	78,594,000
Gross contribution	24,124,000	23,937,000
Talent Assessment & Other | Reportable segments
Segment Reporting Information [Line Items]
Revenues	70,658,000	0
Gross contribution	$ 43,044,000	$ 0

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Segment Information - Reconciliation of Segment Gross Contribution to Net Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Costs and expenses:
Cost of services and product development - unallocated	$ 357,209	$ 237,609
Selling, general and administrative	487,745	304,244
Acquisition and integration charges	59,266	13,272
Operating (loss) income	(8,711)	53,514
Interest expense and other, net	34,160	5,017
(Benefit) provision for income taxes	(23,284)	12,064
Net (loss) income	(19,587)	36,433
Reportable segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment gross contribution	$ 614,814	388,617
Reportable segments | Maximum
Costs and expenses:
Percent of target bonus allocated to segments	100.00%
Corporate and other expenses
Costs and expenses:
Cost of services and product development - unallocated	$ 8,458	1,057
Selling, general and administrative	487,745	304,244
Depreciation and amortization	68,056	16,530
Acquisition and integration charges	$ 59,266	$ 13,272

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Goodwill and Intangible Assets - Changes to Carrying Amount of Goodwill by Reporting Unit (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Sep. 30, 2017	Dec. 31, 2017
Goodwill [Line Items]
Goodwill impairment		$ 0
Goodwill, accumulated impairment losses			$ 0
Goodwill [Roll Forward]
Balance, December 31, 2017	$ 2,987,294,000
Reclassified as held-for-sale	(20,547,000)
Foreign currency translation impact and other	(10,105,000)
Balance at March 31, 2018	2,956,642,000
Research
Goodwill [Roll Forward]
Balance, December 31, 2017	2,619,677,000
Reclassified as held-for-sale	0
Foreign currency translation impact and other	(17,958,000)
Balance at March 31, 2018	2,601,719,000
Consulting
Goodwill [Roll Forward]
Balance, December 31, 2017	97,798,000
Reclassified as held-for-sale	0
Foreign currency translation impact and other	528,000
Balance at March 31, 2018	98,326,000
Events
Goodwill [Roll Forward]
Balance, December 31, 2017	187,920,000
Reclassified as held-for-sale	0
Foreign currency translation impact and other	(170,000)
Balance at March 31, 2018	187,750,000
Talent Assessment & Other
Goodwill [Roll Forward]
Balance, December 31, 2017	81,899,000
Reclassified as held-for-sale	(20,547,000)
Foreign currency translation impact and other	7,495,000
Balance at March 31, 2018	$ 68,847,000

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Goodwill and Intangible Assets - Carrying Amounts of Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Finite-lived Intangible Assets [Roll Forward]
Gross cost, beginning balance	$ 1,482,982
Write-off of fully amortized intangible assets	(228)
Reclassified as held-for-sale	7,771
Foreign currency translation impact	15,789
Gross cost, ending balance	1,490,772
Accumulated amortization	(243,001)		$ (190,960)
Finite-lived intangible assets, net	1,247,771		1,292,022
Amortization of intangibles	51,646	$ 6,290
Customer Relationships
Finite-lived Intangible Assets [Roll Forward]
Gross cost, beginning balance	1,200,316
Write-off of fully amortized intangible assets	0
Reclassified as held-for-sale	7,170
Foreign currency translation impact	15,218
Gross cost, ending balance	1,208,364
Accumulated amortization	(119,075)		(92,983)
Finite-lived intangible assets, net	$ 1,089,289		1,107,333
Customer Relationships | Minimum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	4 years
Customer Relationships | Maximum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	13 years
Software
Finite-lived Intangible Assets [Roll Forward]
Gross cost, beginning balance	$ 123,424
Write-off of fully amortized intangible assets	0
Reclassified as held-for-sale	321
Foreign currency translation impact	491
Gross cost, ending balance	123,594
Accumulated amortization	(32,410)		(26,344)
Finite-lived intangible assets, net	$ 91,184		97,080
Software | Minimum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	3 years
Software | Maximum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	7 years
Content
Finite-lived Intangible Assets [Roll Forward]
Gross cost, beginning balance	$ 104,313
Write-off of fully amortized intangible assets	(228)
Reclassified as held-for-sale	241
Foreign currency translation impact	251
Gross cost, ending balance	104,095
Accumulated amortization	(63,778)		(47,475)
Finite-lived intangible assets, net	$ 40,317		56,838
Content | Minimum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	1 year 6 months
Content | Maximum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	5 years
Other
Finite-lived Intangible Assets [Roll Forward]
Gross cost, beginning balance	$ 54,929
Write-off of fully amortized intangible assets	0
Reclassified as held-for-sale	39
Foreign currency translation impact	(171)
Gross cost, ending balance	54,719
Accumulated amortization	(27,738)		(24,158)
Finite-lived intangible assets, net	$ 26,981		$ 30,771
Other | Minimum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	2 years
Other | Maximum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	5 years

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Goodwill and Intangible Assets - Estimated Future Amortization Expense By Year From Amortizable Intangibles (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2018 (remaining nine months)	$ 138,953
2019	135,868
2020	129,461
2021	108,979
2022	99,363
Thereafter	635,147
Finite-lived intangible assets, net	$ 1,247,771	$ 1,292,022

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Debt (Details)	3 Months Ended
	Mar. 31, 2018 USD ($) installment payment
Interest rate swaps
Debt Instrument [Line Items]
Derivative, term of contract	30 days
Interest rate, fair value hedge derivative at fair value, net	$ 17,300,000
Senior Notes
Debt Instrument [Line Items]
Proceeds from issuance of debt	$ 800,000,000
Debt instrument, fixed interest rate	5.125%
Debt instrument, issue price, percent	100.00%
Debt instrument, redemption, prince, percentage of principal amount that may be redeemed	40.00%
Senior Notes | Debt instrument, redemption with the proceeds of certain equity offerings
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	105.125%
Senior Notes | Debt instrument, redemption excluding make whole premium
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	100.00%
Senior Notes | Debt instrument, redemption due to specific kinds of change of control
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	101.00%
2016 Agreement
Debt Instrument [Line Items]
Debt instrument, interest, additional interest above eurodollar rate	1.00%
2016 Agreement | Federal Funds Rate
Debt Instrument [Line Items]
Debt instrument interest additional interest above federal fund rate	0.50%
Minimum applicable margin rate	0.125%
Maximum applicable margin rate	1.50%
2016 Agreement | Euro Dollar rate
Debt Instrument [Line Items]
Minimum applicable margin rate	1.125%
Maximum applicable margin rate	2.50%
2016 Agreement | Term loans | Bank Term Loan - A Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,500,000,000.0
2016 Agreement | Term loans | Bank Term Loan - B Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	500,000,000
2016 Agreement | Revolving credit facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,200,000,000.0
Bank Term Loan - A Facility | Term loans
Debt Instrument [Line Items]
Line of credit facility, frequency of payments, number of quarterly installments | installment	16
Bank Term Loan - B Facility | Term loans | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.00%
Bank Term Loan - B Facility | Term loans | Base Rate
Debt Instrument [Line Items]
Line of credit facility, frequency of payments, number of quarterly installments | payment	28
Debt instrument, basis spread on variable rate	1.00%

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Debt - Borrowings (Details) - USD ($)		3 Months Ended		12 Months Ended
	Apr. 30, 2018	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2012	Dec. 31, 2017
Debt Instrument [Line Items]
Principal amount outstanding		$ 3,018,135,000			$ 3,323,062,000
Less: deferred financing fees		(42,350,000)			(44,217,000)
Net balance sheet carrying amount		$ 2,975,785,000			3,278,845,000
Average annual effective rate		4.14%
Repayments of debt		$ 304,813,000	$ 0
Subsequent Event
Debt Instrument [Line Items]
Repayments of debt	$ 450,000,000
Revolving credit facility
Debt Instrument [Line Items]
Long-term debt, gross		$ 310,000,000			595,000,000
Contractual annualized interest rate		4.38%
Floating eurodollar base rate		1.88%
Debt instrument interest additional interest above base rate		2.50%
Line of credit facility, remaining borrowing capacity		$ 866,000,000
Revolving credit facility | Subsequent Event
Debt Instrument [Line Items]
Repayments of debt	50,000,000
Bank Term Loan - A Facility
Debt Instrument [Line Items]
Long-term debt, gross		$ 1,410,750,000			1,429,312,000
Contractual annualized interest rate		3.88%
Floating eurodollar base rate		1.88%
Debt instrument interest additional interest above base rate		2.00%
Bank Term Loan - B Facility
Debt Instrument [Line Items]
Long-term debt, gross		$ 495,000,000			496,250,000
Contractual annualized interest rate		3.23%
Floating eurodollar base rate		1.23%
Debt instrument interest additional interest above base rate		2.00%
Bank Term Loan - B Facility | Subsequent Event
Debt Instrument [Line Items]
Repayments of debt	$ 400,000,000
Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross		$ 800,000,000			800,000,000
Debt instrument, fixed interest rate		5.125%
Connecticut Economic Development Program
Debt Instrument [Line Items]
Long-term debt, gross		$ 2,385,000		$ 2,500,000.0	$ 2,500,000
Debt instrument term				10 years
Debt instrument, fixed interest rate				3.00%
Debt instrument, period principal payments are deferred				5 years

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Equity - Share Repurchase Program and Share Repurchase Activity (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Class of Stock [Line Items]
Stock repurchase program, authorized amount	$ 1,200,000,000.0
Stock repurchase program, remaining authorized repurchase amount	$ 1,100,000,000
Number of shares repurchased (in shares)	239,268	218,752
Cash paid for repurchased shares (in thousands)	$ 28,394,000	$ 21,978,000
Treasury stock, average price paid per share (in dollars per share)	$ 118.73	$ 100.47

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Equity - Changes in AOCI/L by Component (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 983,465
Other comprehensive income, net of tax	30,717	$ 1,851
Ending balance	987,571
Interest Rate Swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	2,483	(1,409)
Change in AOCI/L before reclassifications to income	9,365	(3,393)
Reclassifications from AOCL/I to income during the period	749	825
Other comprehensive income, net of tax	10,114	(2,568)
Ending balance	12,597	(3,977)
Defined Benefit Pension Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(5,861)	(5,797)
Change in AOCI/L before reclassifications to income	0	0
Reclassifications from AOCL/I to income during the period	56	48
Other comprehensive income, net of tax	56	48
Ending balance	(5,805)	(5,749)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	4,886	(42,477)
Change in AOCI/L before reclassifications to income	20,547	4,371
Reclassifications from AOCL/I to income during the period	0	0
Other comprehensive income, net of tax	20,547	4,371
Ending balance	25,433	(38,106)
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	1,508	(49,683)
Change in AOCI/L before reclassifications to income	29,912	978
Reclassifications from AOCL/I to income during the period	805	873
Other comprehensive income, net of tax	30,717	1,851
Ending balance	$ 32,225	$ (47,832)

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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
(Benefit) provision for income taxes	$ (23,284)	$ 12,064
(Loss) income before income taxes	$ (42,871)	$ 48,497
Effective income tax rate	54.30%	24.90%
Tax Cuts and Jobs Act of 2017, incomplete accounting, provisional income tax benefit			$ 123,200
Tax Cuts and Jobs Act of 2017, incomplete accounting, transition tax for accumulated foreign earnings, provisional income tax expense			63,600
Unrecognized tax benefits	$ 63,200		$ 60,300
Decrease in unrecognized tax benefits is reasonably possible	$ 8,000

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Derivatives and Hedging - Outstanding Derivatives Contracts (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018 USD ($) outstanding_contract	Dec. 31, 2017 USD ($) outstanding_contract
Derivatives, Fair Value [Line Items]
Number of Outstanding Contracts | outstanding_contract	51	142
Notional Amounts	$ 1,713,425	$ 2,086,764
Fair Value Asset (Liability), Net	16,819	3,860
Unrealized Gain Recorded in AOCI/L	$ 12,597	$ 2,483
Designated as hedging instrument | Other assets | Interest rate swaps
Derivatives, Fair Value [Line Items]
Number of Outstanding Contracts | outstanding_contract	5	5
Notional Amounts	$ 1,400,000	$ 1,400,000
Fair Value Asset (Liability), Net	17,314	3,412
Unrealized Gain Recorded in AOCI/L	$ 12,597	$ 2,483
Not Designated as Hedging Instrument | Accrued liabilities | Foreign currency forwards
Derivatives, Fair Value [Line Items]
Number of Outstanding Contracts | outstanding_contract	46
Notional Amounts	$ 313,425
Fair Value Asset (Liability), Net	(495)
Unrealized Gain Recorded in AOCI/L	$ 0
Not Designated as Hedging Instrument | Other current assets | Foreign currency forwards
Derivatives, Fair Value [Line Items]
Number of Outstanding Contracts | outstanding_contract		137
Notional Amounts		$ 686,764
Fair Value Asset (Liability), Net		448
Unrealized Gain Recorded in AOCI/L		$ 0

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Derivatives and Hedging - Amounts Recognized in the Condensed Consolidated Statements of Operations for Derivative Contracts (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Total (income) expense, net	$ (6,287)	$ 1,594
Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Total (income) expense, net	945	1,375
Other (gain) loss, net
Derivative Instruments, Gain (Loss) [Line Items]
Total (income) expense, net	$ (7,232)	$ 219

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Fair Value Disclosures - Assets And Liabilities Measured At Fair Value On Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets:
Assets measured at fair value on a recurring basis	$ 93,693	$ 93,590
Fair Value, Inputs, Level 1 | Deferred compensation plan assets
Assets:
Assets measured at fair value on a recurring basis	16,746	29,108
Fair Value, Inputs, Level 2
Assets:
Assets measured at fair value on a recurring basis	76,947	64,482
Liabilities:
Liabilities measured at fair value on a recurring basis	875,463	929,065
Fair Value, Inputs, Level 2 | Foreign currency forward contracts
Assets:
Assets measured at fair value on a recurring basis	156	2,053
Liabilities:
Liabilities measured at fair value on a recurring basis	651	1,605
Fair Value, Inputs, Level 2 | Interest rate swap contracts
Assets:
Assets measured at fair value on a recurring basis	17,314	3,412
Fair Value, Inputs, Level 2 | Deferred compensation plan assets
Assets:
Assets measured at fair value on a recurring basis	59,477	59,017
Fair Value, Inputs, Level 2 | Deferred compensation plan liabilities
Liabilities:
Liabilities measured at fair value on a recurring basis	73,172	89,900
Senior Notes
Liabilities:
Long term debt	800,000	800,000
Senior Notes | Fair Value, Inputs, Level 2 | Senior notes
Liabilities:
Liabilities measured at fair value on a recurring basis	$ 801,640	$ 837,560

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Employee Benefits (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Retirement Benefits [Abstract]
Net periodic pension expense	$ 0.7	$ 0.7

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Commitments and Contingencies (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Payment obligations under indemnification agreements	$ 0

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Subsequent Events - (Details) $ in Thousands		1 Months Ended	3 Months Ended
	Apr. 30, 2018 USD ($)	Apr. 30, 2018 business	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
Subsequent Event [Line Items]
Payments on borrowings			$ 304,813	$ 0
Subsequent Event
Subsequent Event [Line Items]
Number of businesses sold | business		2
Payments on borrowings	$ 450,000