IQVIA (IQV) 10-K 16 Feb 22 2021 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2021	Feb. 07, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-35907
Entity Registrant Name	IQVIA HOLDINGS INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-1341991
Entity Address, Address Line One	4820 Emperor Blvd.
Entity Address, City or Town	Durham
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	27703
City Area Code	919
Local Phone Number	998-2000
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	IQV
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 45.7
Entity Common Stock, Shares Outstanding		190,485,264
Documents Incorporated by Reference	Portions of the registrant’s Proxy Statement for the 2022 Annual Meeting of Stockholders are incorporated herein by reference in Part III of this Annual Report on Form 10-K to the extent stated herein. Such proxy statement will be filed with the Securities and Exchange Commission within 120 days of the registrant’s fiscal year ended December 31, 2021.
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Central Index Key	0001478242

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2021
Auditor Information [Abstract]
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	Raleigh, North Carolina
Auditor Firm ID	238

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenues	$ 13,874	$ 11,359	$ 11,088
Costs of revenue, exclusive of depreciation and amortization	9,233	7,500	7,300
Selling, general and administrative expenses	1,964	1,789	1,734
Depreciation and amortization	1,264	1,287	1,202
Restructuring costs	20	52	75
Income from operations	1,393	731	777
Interest income	(6)	(6)	(9)
Interest expense	375	416	447
Loss on extinguishment of debt	26	13	24
Other income, net	(130)	(65)	(37)
Income before income taxes and equity in earnings (losses) of unconsolidated affiliates	1,128	373	352
Income tax expense	163	72	116
Income before equity in earnings (losses) of unconsolidated affiliates	965	301	236
Equity in earnings (losses) of unconsolidated affiliates	6	7	(9)
Net income	971	308	227
Net income attributable to non-controlling interests	(5)	(29)	(36)
Net income attributable to IQVIA Holdings Inc.	$ 966	$ 279	$ 191
Earnings per share attributable to common stockholders:
Basic (in dollars per share)	$ 5.05	$ 1.46	$ 0.98
Diluted (in dollars per share)	$ 4.95	$ 1.43	$ 0.96
Weighted average common shares outstanding:
Basic (in shares)	191.4	191.3	195.1
Diluted (in shares)	195	195	199.6

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 971	$ 308	$ 227
Comprehensive income adjustments:
Unrealized gains (losses) on derivative instruments, net of income tax expense (benefit) of $2, $(10) and $4	9	(30)	(15)
Defined benefit plan adjustments, net of income tax expense (benefit) of $21, $(15) and $5	69	(54)	(30)
Foreign currency translation, net of income tax expense (benefit) of $116, $(145) and $(30)	(281)	183	(39)
Reclassification adjustments:
Losses (gains) on derivative instruments included in net income, net of income tax benefit of $4, $3 and $—	12	10	(1)
Comprehensive income	780	417	142
Comprehensive income attributable to non-controlling interests	(5)	(32)	(38)
Comprehensive income attributable to IQVIA Holdings Inc.	$ 775	$ 385	$ 104

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Unrealized (losses) gains on derivative instruments, income tax expense {benefit)	$ 2	$ (10)	$ 4
Defined benefit plan adjustments, income tax (benefit) expense	21	(15)	5
Foreign currency translation, income tax (benefit) expense	116	(145)	(30)
(Gain) losses on derivative instruments included in net income, income tax expense	$ 4	$ 3	$ 0

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	$ 1,366	$ 1,814
Trade accounts receivable and unbilled services, net	2,551	2,410
Prepaid expenses	156	159
Income taxes receivable	58	56
Investments in debt, equity and other securities	111	88
Other current assets and receivables	521	563
Total current assets	4,763	5,090
Property and equipment, net	497	482
Operating lease right-of-use assets	406	471
Investments in debt, equity and other securities	76	78
Investments in unconsolidated affiliates	88	84
Goodwill	13,301	12,654
Other identifiable intangibles, net	4,943	5,205
Deferred income taxes	124	114
Deposits and other assets	491	386
Total assets	24,689	24,564
Current liabilities:
Accounts payable and accrued expenses	2,981	2,813
Unearned income	1,825	1,252
Income taxes payable	137	102
Current portion of long-term debt	91	149
Other current liabilities	207	242
Total current liabilities	5,241	4,558
Long-term debt, less current portion	12,034	12,384
Deferred income taxes	410	338
Operating lease liabilities	313	371
Other liabilities	649	633
Total liabilities	18,647	18,284
Commitments and contingencies (Note 1 and 12)
Stockholders’ equity:
Common stock and additional paid-in capital, 400.0 shares authorized as of December 31, 2021 and 2020, $0.01 par value, 255.8 shares issued and 190.6 shares outstanding as of December 31, 2021; 254.7 shares issued and 191.2 shares outstanding as of December 31, 2020	10,777	11,095
Retained earnings	2,243	1,277
Treasury stock, at cost, 65.2 and 63.5 shares as of December 31, 2021 and 2020, respectively	(6,572)	(6,166)
Accumulated other comprehensive loss	(406)	(205)
Equity attributable to IQVIA Holdings Inc.’s stockholders	6,042	6,001
Non-controlling interests	0	279
Total stockholders’ equity	6,042	6,280
Total liabilities and stockholders’ equity	$ 24,689	$ 24,564

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Common stock, shares authorized	400,000,000	400,000,000
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares issued (shares)	255,800,000	254,700,000
Common stock, shares outstanding (in shares)	190,600,000	191,200,000
Treasury stock, shares	65,200,000	63,500,000

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities:
Net income	$ 971	$ 308	$ 227
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	1,264	1,287	1,202
Amortization of debt issuance costs and discount	17	18	13
Stock-based compensation	170	95	146
Loss on disposals of property and equipment, net	0	0	1
(Earnings) loss from unconsolidated affiliates	(6)	(7)	9
Gain on investments, net	(16)	(25)	(43)
Benefit from deferred income taxes	(138)	(176)	(157)
Changes in operating assets and liabilities:
Accounts receivable and unbilled services	(138)	255	(122)
Prepaid expenses and other assets	(15)	(146)	(92)
Accounts payable and accrued expenses	244	253	240
Unearned income	591	180	(2)
Income taxes payable and other liabilities	(2)	(83)	(5)
Net cash provided by operating activities	2,942	1,959	1,417
Investing activities:
Acquisition of property, equipment and software	(640)	(616)	(582)
Acquisition of businesses, net of cash acquired	(1,458)	(177)	(588)
Purchases of marketable securities, net	(10)	(9)	(3)
Investments in unconsolidated affiliates, net of payments received	(5)	10	0
Proceeds from sale of (investments in) equity securities	5	(2)	(22)
Other	5	(2)	5
Net cash used in investing activities	(2,103)	(796)	(1,190)
Financing activities:
Proceeds from issuance of debt	1,951	1,591	1,900
Payment of debt issuance costs	(40)	(33)	(47)
Repayment of debt	(2,091)	(864)	(899)
Proceeds from revolving credit facility	810	1,250	2,522
Repayment of revolving credit facility	(600)	(1,635)	(2,776)
(Payments) proceeds related to employee stock option plans	(59)	(44)	11
Repurchase of common stock	(406)	(447)	(949)
Distributions to non-controlling interest, net	0	(13)	(18)
Distributions to non-controlling interest, net	(758)	0	0
Contingent consideration and deferred purchase price payments	(42)	(22)	(20)
Net cash used in financing activities	(1,235)	(217)	(276)
Effect of foreign currency exchange rate changes on cash	(52)	31	(5)
(Decrease) increase in cash and cash equivalents	(448)	977	(54)
Cash and cash equivalents at beginning of period	1,814	837	891
Cash and cash equivalents at end of period	$ 1,366	$ 1,814	$ 837

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Non-controlling Interests
Beginning balance (in shares) at Dec. 31, 2018		251.5	54
Beginning balance at Dec. 31, 2018	$ 6,954	$ 3	$ (4,770)	$ 10,898	$ 807	$ (224)	$ 240
Increase (Decrease) in Stockholders' Equity
Issuance of common stock (in shares)		1.5
Issuance of common stock	11	$ 0		11
Repurchase of common stock (in shares)			(6.7)
Repurchase of common stock	(963)		$ (963)
Stock-based compensation	137			137
Distributions to non-controlling interest, net	(18)						(18)
Net income	227				191		36
Unrealized losses on derivative instruments, net of tax	(15)					(15)
Defined benefit plan adjustments, net of tax	(30)					(30)
Foreign currency translation, net of tax	(39)					(41)	2
Reclassification adjustments, net of tax	(1)					(1)
Ending balance (in shares) at Dec. 31, 2019		253	60.7
Ending balance at Dec. 31, 2019	6,263	$ 3	$ (5,733)	11,046	998	(311)	260
Increase (Decrease) in Stockholders' Equity
Issuance of common stock (in shares)		1.7
Issuance of common stock	(44)			(44)
Repurchase of common stock (in shares)			(2.8)
Repurchase of common stock	(433)		$ (433)
Stock-based compensation	90			90
Distributions to non-controlling interest, net	(13)						(13)
Net income	308				279		29
Unrealized losses on derivative instruments, net of tax	(30)					(30)
Defined benefit plan adjustments, net of tax	(54)					(54)
Foreign currency translation, net of tax	183					180	3
Reclassification adjustments, net of tax	$ 10					10
Ending balance (in shares) at Dec. 31, 2020	191.2	254.7	63.5
Ending balance at Dec. 31, 2020	$ 6,280	$ 3	$ (6,166)	11,092	1,277	(205)	279
Increase (Decrease) in Stockholders' Equity
Issuance of common stock (in shares)		1.1
Issuance of common stock	(59)			(59)
Repurchase of common stock (in shares)			(1.7)
Repurchase of common stock	(406)		$ (406)
Stock-based compensation	157			157
Acquisition of Quest's non-controlling interest, net of tax	(710)			(416)		(10)	(284)
Net income	971				966		5
Unrealized losses on derivative instruments, net of tax	9					9
Defined benefit plan adjustments, net of tax	69					69
Foreign currency translation, net of tax	(281)					(281)
Reclassification adjustments, net of tax	$ 12					12
Ending balance (in shares) at Dec. 31, 2021	190.6	255.8	(65.2)
Ending balance at Dec. 31, 2021	$ 6,042	$ 3	$ (6,572)	$ 10,774	$ 2,243	$ (406)	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies The Company IQVIA Holdings Inc. (together with its subsidiaries, the “Company” or “IQVIA”) is a leading global provider of advanced analytics, technology solutions, and clinical research services to the life sciences industry. IQVIA creates intelligent connections across all aspects of healthcare through its analytics, transformative technology, big data resources and extensive domain expertise. IQVIA Connected Intelligence™ delivers powerful insights with speed and agility — enabling customers to accelerate the clinical development and commercialization of innovative medical treatments that improve healthcare outcomes for patients. With approximately 79,000 employees, the Company conducts business in more than 100 countries. IQVIA is a global leader in protecting individual patient privacy. The company uses a wide variety of privacy-enhancing technologies and safeguards to protect individual privacy while generating and analyzing information on a scale that helps healthcare stakeholders identify disease patterns and correlate with the precise treatment path and therapy needed for better outcomes. IQVIA’s insights and execution capabilities help biotech, medical device and pharmaceutical companies, medical researchers, government agencies, payers and other healthcare stakeholders tap into a deeper understanding of diseases, human behaviors and scientific advances, in an effort to advance their path toward cures. Principles of Consolidation The accompanying consolidated financial statements include the accounts and operations of the Company, its subsidiaries and investments in which the Company has control. Amounts pertaining to the non-controlling ownership interests held by third parties in the operating results and financial position of the Company’s majority-owned subsidiaries are reported as non-controlling interests. Intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates The preparation of financial statements in accordance with generally accepted accounting principles in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and the disclosure of contingent assets and liabilities, at the date of the financial statements, as well as the reported amounts of revenues and expenses during the period. These estimates are based on historical experience and various other assumptions believed reasonable under the circumstances. The Company evaluates its estimates on an ongoing basis and makes changes to the estimates and related disclosures as experience develops or new information becomes known. Actual results may differ from those estimates. Foreign Currencies The Company’s financial statements are reported in United States dollars and, accordingly, the Company’s results of operations are impacted by fluctuations in exchange rates that affect the translation of its revenues and expenses denominated in foreign currencies into United States dollars for purposes of reporting its consolidated financial results. Assets and liabilities recorded in foreign currencies on the books of foreign subsidiaries are translated at the exchange rate on the balance sheet date. Revenues, costs and expenses are translated at average rates of exchange during the year. Translation adjustments resulting from this process are charged or credited to the accumulated other comprehensive (loss) income (“AOCI”) component of stockholders’ equity. The Company is subject to foreign currency transaction risk for fluctuations in exchange rates during the period of time between the consummation and cash settlement of a transaction. The Company earns revenue from its service contracts over a period of several months and, in some cases, over a period of several years. Accordingly, exchange rate fluctuations during this period may affect the Company’s profitability with respect to such contracts. For operations outside the United States that are considered to be highly inflationary or where the United States dollar is designated as the functional currency, monetary assets and liabilities are remeasured using end-of-period exchange rates, whereas nonmonetary accounts are remeasured using historical exchange rates, and all remeasurement and transaction adjustments are recognized in other income, net. Cash Equivalents The Company considers all highly liquid investments with an initial maturity of three months or less when purchased to be cash equivalents. Derivatives The Company uses derivative instruments to manage exposures to interest rates and foreign currencies. Derivatives are recorded on the balance sheet at fair value at each balance sheet date utilizing pricing models for non-exchange-traded contracts. At inception, the Company designates whether or not the derivative instrument is an effective hedge of an asset, liability or firm commitment which is then classified as either a cash flow hedge or a fair value hedge. If determined to be an effective cash flow hedge, changes in the fair value of the derivative instrument are recorded as a component of AOCI until realized. The Company includes the impact from these hedges in the same line item as the hedged item on the consolidated statements of cash flows. Changes in fair value of effective fair value hedges are recorded in earnings as an offset to the changes in the fair value of the related hedged item. Hedge ineffectiveness, if any, is immediately recognized in earnings. Changes in the fair values of derivative instruments that are not an effective hedge are recognized in earnings. When it is probable that a hedged forecasted transaction will not occur, the Company discontinues hedge accounting for the affected portion of the forecasted transaction and reclassifies gains or losses that were accumulated in AOCI to earnings for foreign exchange derivatives and interest expense for interest rate derivatives on the consolidated statements of income. Cash flows are classified consistent with the underlying hedged item. The Company has entered, and may in the future enter, into derivative contracts (caps, swaps, forwards, calls or puts, warrants, for example) related to its debt and forecasted foreign currency transactions. The Company designates its foreign currency denominated debt as a hedge of its net investment in certain foreign subsidiaries to reduce the volatility in stockholders’ equity caused by changes in the Euro exchange rate with respect to the United States dollar, which is accounted for as a cash flow hedge. The effective portion of foreign exchange gains or losses on the remeasurement of the debt is recognized in the cumulative translation adjustment component of AOCI with the related offset in long-term debt. Those amounts would be reclassified from AOCI to earnings upon the sale or substantial liquidation of these net investments. Business Combinations The Company uses the acquisition method to account for business combinations, and accordingly, the identifiable assets acquired, the liabilities assumed and any non-controlling interest in the acquiree are recorded at their estimated fair values on the date of the acquisition. The Company uses significant judgments, estimates and assumptions in determining the estimated fair value of assets acquired, liabilities assumed and non-controlling interest including expected future cash flows, and discount rates that reflect the risk associated with the expected future cash flows and estimated useful lives. The Company records and allocates to its reporting units the excess of the cost over the fair value of the net assets acquired, known as goodwill. The recoverability of the goodwill and indefinite-lived intangible assets are evaluated annually for impairment, or if and when events or circumstances indicate a possible impairment. The Company reviews the carrying values of other identifiable intangible assets if the facts and circumstances indicate a possible impairment. Long-Lived Assets Property and equipment are stated at cost and are depreciated using the straight-line method over the shorter of the asset’s estimated useful life or the lease term, if related to leased property, as follows: Buildings and leasehold improvements 3 - 40 years Equipment 3 - 10 years Furniture and fixtures 5 - 10 years Transportation equipment 3 - 20 years Definite-lived other identifiable intangible assets are amortized primarily using an accelerated method that reflects the pattern in which the Company expects to benefit from the use of the asset over its estimated remaining useful life as follows: Trademarks and trade names 1 - 17 years Contract backlog and client relationships 1 - 25 years Software and related assets 1 - 10 years Databases 1 - 9 years Non-compete agreements and other 2 - 5 years Included in software and related assets is the capitalized cost of internal-use software used in supporting the Company’s business. Qualifying costs incurred during the application development stage are capitalized and amortized over their estimated useful lives. Costs are capitalized from completion of the preliminary project stage and when it is considered probable that the software will be used to perform its intended function, up until the time the software is placed into service. The Company recognized $211 million, $267 million and $196 million of amortization expense in 2021, 2020 and 2019, respectively, related to software and related assets. The carrying values of property, equipment and intangible and other long-lived assets are reviewed for recoverability at the asset grouping level to determine if the facts and circumstances suggest that a potential impairment may have occurred. If this review indicates that carrying values will not be recoverable, as determined based on undiscounted cash flow projections, the Company will record an impairment charge to reduce carrying values to estimated fair value. There were no impairments recognized in 2021, 2020 and 2019. Revenue Recognition The Company’s arrangements are primarily service contracts that range in duration from a few months to several years. The Company recognizes revenue when control of these services is transferred to the customer for an amount, referred to as the transaction price, that reflects the consideration to which the Company is expected to be entitled in exchange for those goods or services. The Company determines revenue recognition utilizing the following five steps: (1) identification of the contract with a customer, (2) identification of the performance obligations in the contract (promised goods or services that are distinct), (3) determination of the transaction price, (4) allocation of the transaction price to the performance obligations, and (5) recognition of revenue when, or as, the Company transfers control of the product or service for each performance obligation. Cash payments made to customers as incentives to induce customers to enter into service agreements with the Company are amortized as a reduction of revenue over the period the services are performed. The Company records revenues net of any tax assessments by governmental authorities, such as value added taxes, that are imposed on and concurrent with specific revenue generating transactions. The Company derives the majority of its revenues in the Technology & Analytics Solutions segment from various information and technology service offerings. Information offerings (primarily under fixed-price contracts) typically include multiple performance obligations including an ongoing subscription-based deliverable for which revenue is recognized ratably as earned over the contract period, and/or a one-time deliverable of data offerings for which revenue is recognized upon delivery. The customer is able to benefit from the provision of data as it is received. The Company’s subscription arrangements typically have terms ranging from one The majority of the Company’s contracts within the Research & Development Solutions segment are service contracts for clinical research that represent a single performance obligation. The Company provides a significant integration service resulting in a combined output, which is clinical trial data that meets the relevant regulatory standards and can be used by the customer to progress to the next phase of a clinical trial or solicit approval of a treatment by the applicable regulatory body. The performance obligation is satisfied over time as the output is captured in data and documentation that is available for the customer to consume over the course of the arrangement and furthers progress of the clinical trial. The Company recognizes revenue over time using a cost-based input method since there is no single output measure that would fairly depict the transfer of control over the life of the performance obligation. Progress on the performance obligation is measured by the proportion of actual costs incurred to the total costs expected to complete the contract. Costs included in the measure of progress include direct labor and third-party costs (such as payments to investigators and other pass through expenses for the Company’s clinical monitors). This cost-based method of revenue recognition requires the Company to make estimates of costs to complete its projects on an ongoing basis. Significant judgment is required to evaluate assumptions related to these estimates. The effect of revisions to estimates related to the transaction price or costs to complete a project are recorded in the period in which the estimate is revised. Most contracts may be terminated upon 30 to 90 days notice by the customer; however, in the event of termination, most contracts require payment for services rendered through the date of termination, as well as for subsequent services rendered to close out the contract. The majority of revenue in our Contract Sales & Medical Solutions segment is from contract salesforce to the biopharmaceutical industry and broader healthcare market and recognized over time using a single measure of progress dependent on the performance obligation. Some of our Contract Sales & Medical Solutions contracts contain multiple performance obligations with distinct promises including recruiting, sales force automation and deployment of sales representatives. The Company utilizes a single measure of progress for each performance obligation to recognize revenue, which includes deployment of sales representatives based on employee days worked; recruiting based on candidates recruited; sales force automation set-up based on hours worked; and sales force automation hosting and maintenance based on usage. These services meet the over time criterion as the customer consumes the benefit as activities are performed and another party would not need to substantially re-perform the work already completed to satisfy the remaining obligations if the services were migrated to another party. Variable Consideration In some cases, contracts provide for variable consideration that is contingent upon the occurrence of uncertain future events, such as performance incentives (including royalty payments, bonuses, or penalty clauses that can either increase or decrease the transaction price). Variable consideration is estimated at the expected value or at the most likely amount depending on the type of consideration. Estimated amounts are included in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. The estimate of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on an assessment of the Company's anticipated performance and all information (historical, current and forecasted) that is reasonably available to the Company and reevaluated each reporting period. Reimbursed Expenses The Company includes reimbursed expenses in revenues and costs of revenue as the Company is primarily responsible for fulfilling the promise to provide the specified service, including the integration of the related services into a combined output to the customer, which are inseparable from the integrated service. These costs include such items as payments to investigators and travel expenses for the Company’s clinical monitors and sales representatives, over which the Company has discretion in establishing prices. The Company controls the good or service and has inventory risk on contractually reimbursable expenses, as sometimes the Company is unable to obtain reimbursement from the customer for costs incurred. Change Orders Changes in the scope of work are common, especially under long-term contracts, and generally result in a change in transaction price. Change orders are evaluated on a contract-by-contract basis to determine if they should be accounted for as a new contract or as part of the existing contract. Generally, services from change orders are not distinct from the original performance obligation. As a result, the effect that the contract modification has on the contract revenue, and measure of progress, is recognized as an adjustment to revenue when it occurs. Costs of Revenue Costs of revenue include (i) compensation and benefits for billable employees and personnel involved in production, data management and delivery, and the costs of acquiring and processing data for the Company’s information offerings; (ii) costs of staff directly involved with delivering technology-related services offerings and engagements, and the costs of data purchased specifically for technology services engagements; (iii) reimbursed expenses that are comprised principally of payments to investigators who oversee clinical trials and travel expenses for the Company’s clinical monitors and sales representatives; and (iv) other expenses directly related to service contracts such as courier fees, laboratory supplies, professional services and travel expenses. Trade Receivables, Unbilled Services and Unearned Income In general, billings and payments are established by contractual provisions including predetermined payment schedules, which may or may not correspond to the timing of the transfer of control of the Company’s services under the contract. In general, the Company’s intention in its invoicing (payment terms) is to maintain cash neutrality over the life of the contract. Generally, the payment terms are 30 to 90 days based on contracts. Upfront payments, when they occur, are intended to cover certain expenses the Company incurs at the beginning of the contract. Neither the Company nor its customers view such upfront payments and contracted payment schedules as a means of financing. Unbilled services primarily arise from long-term contracts when a cost-based or hours-based input method of revenue recognition is utilized and revenue recognized exceeds the amount billed to the customer. Unearned income consists of advance payments and billings in excess of revenue recognized. As the contracted services are subsequently performed and the associated revenue is recognized, the unearned income balance is reduced by the amount of the revenue recognized during the period. Unearned income is classified as a current liability on our consolidated balance sheet as the Company expects to recognize the associated revenue in less than one year. Restructuring Costs Restructuring costs, which primarily include termination benefits, are recorded at estimated value. Key assumptions in determining the restructuring costs include the terms and payments that may be negotiated to terminate certain contractual obligations and the timing of employees leaving the Company. Debt Fees Fees incurred to issue debt are generally deferred and amortized as a component of interest expense over the estimated term of the related debt using the effective interest rate method. Contingencies The Company records accruals for claims, suits, investigations and proceedings when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. The Company reviews claims, suits, investigations and proceedings at least quarterly and records or adjusts accruals related to such matters to reflect the impact and status of any settlements, rulings, advice of counsel or other information pertinent to a particular matter. Legal costs associated with contingencies are charged to expense as incurred. The Company is party to legal proceedings incidental to its business. While the outcome of these matters could differ from management’s expectations, the Company does not believe the resolution of these matters will have a material adverse effect to the Company’s financial statements. Income Taxes The provision for income taxes includes federal, state, local and foreign taxes. Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the estimated future tax consequences of temporary differences between the financial statement carrying amounts and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which the temporary differences are expected to be recovered or settled. The Company records U.S. deferred taxes based on the Federal corporate income tax rate of 21%. The Company accounts for tax related to Global Intangible Low-Taxed Income (“GILTI”) as a period cost when incurred. Recognition of deferred income tax assets is based on management’s belief that it is more likely than not that the income tax benefit associated with certain temporary differences, income tax operating loss, capital loss carryforwards, and income tax credits, would be realized. The Company records a valuation allowance to reduce its deferred income tax assets for those deferred income tax items for which it was more likely than not that realization would not occur. The Company determines the amount of the valuation allowance based, in part, on the Company’s assessment of future taxable income and in light of the Company’s ongoing income tax strategies. If the estimate of future taxable income or tax strategies changes at any time in the future, the Company would record an adjustment to our valuation allowance. Recording such an adjustment could have a material effect on the Company’s financial condition or results of operations. Income tax expense is based on the distribution of profit before income tax among the various taxing jurisdictions in which we operate, adjusted as required by the income tax laws of each taxing jurisdiction. Changes in the distribution of profits and losses among taxing jurisdictions may have a significant impact on our effective income tax rate. The Company does not consider the undistributed earnings of our foreign subsidiaries to be indefinitely reinvested outside of the United States. Pensions and Other Postretirement Benefits The Company provides retirement benefits to certain employees, including defined benefit pension plans and postretirement medical plans. The determination of benefit obligations and expense is based on actuarial models. In order to measure benefit costs and obligations using these models, assumptions are made with regard to the discount rate, expected return on plan assets, cash balance crediting rate, lump sum conversion rate and the assumed rate of compensation increases. In addition, retiree medical care cost trend rates are a key assumption used exclusively in determining costs for the Company’s postretirement health care and life insurance benefit plans. Stock-based Compensation The Company accounts for stock-based compensation for stock options and stock appreciation rights under the fair value method and uses the Black-Scholes-Merton model to estimate the value of such stock-based awards granted to its employees and non-executive directors. Expected volatility is based upon the historical volatility of a peer group for a period equal to the expected term, as the Company does not have adequate history to calculate its own volatility and believes the expected volatility will approximate the historical volatility of the peer group. The Company does not currently anticipate paying dividends. The expected term represents the period of time the grants are expected to be outstanding. The risk-free interest rate is based on the United States Treasury yield curve in effect at the time of the grant. The Company values its stock-based compensation for restricted stock awards and restricted stock units based on the closing market price of the Company’s common stock on the date of grant. The Company accounts for its stock-based compensation for performance awards related to compound annual earnings per share (“EPS”) growth and/or other internal performance measures based on the closing market price of the Company’s common stock on the date of grant, and for performance awards related to relative total shareholder return (“TSR”) based on a Monte Carlo simulation model. Leases The Company determines if an arrangement is a lease at inception and reassesses if there are changes in terms and conditions of the contract. Operating leases are included in operating lease right-of-use (“ROU”) assets, other current liabilities, and operating lease liabilities on our consolidated balance sheets. Finance leases are included in deposits and other assets, other current liabilities, and other liabilities on our consolidated balance sheets. Lease assets and liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. Lease assets also include any lease payments made before lease commencement and initial direct costs and excludes lease incentives. In determining the lease term at lease commencement, the Company includes the noncancellable term and the periods which the Company deems it is reasonably certain to exercise or not to exercise a renewal or cancellation option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. The Company has lease agreements with lease and non-lease components that the Company has elected to account for as single lease components. Earnings Per Share The calculation of earnings per share is based on the weighted average number of common shares or common stock equivalents outstanding during the applicable period. The dilutive effect of common stock equivalents is excluded from basic earnings per share and is included in the calculation of diluted earnings per share. Potentially dilutive securities include outstanding stock options and unvested restricted stock units, restricted stock and performance awards. Diluted shares outstanding are calculated based on the average share price for each fiscal period using the treasury stock method. Under the treasury stock method, the amount the employee must pay for exercising stock options, and the amount of compensation cost for future service that the Company has not yet recognized are assumed to be used to repurchase shares. Investments in Unconsolidated Affiliates The Company’s investments in unconsolidated affiliates are accounted for under the equity method if the Company exercises significant influence or has an investment in a limited partnership that is considered to be greater than minor. These investments are classified as investments in unconsolidated affiliates on the accompanying consolidated balance sheets. The Company records its pro rata share of the earnings, adjusted for accretion of basis difference, of these investments in equity in earnings (losses) of unconsolidated affiliates on the accompanying consolidated statements of income. The Company reviews its investments in unconsolidated affiliates for impairment whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable. Treasury Stock The Company records treasury stock purchases under the cost method. Upon reissuance of treasury stock, amounts in excess of the acquisition cost are credited to additional paid-in capital. If the Company reissues treasury stock at an amount below its acquisition cost and additional paid-in capital associated with prior treasury stock transactions is insufficient to cover the difference between the acquisition cost and the reissue price, this shortfall is recorded in retained earnings. Recently Issued Accounting Standards Accounting pronouncements recently adopted In March 2020, the FASB issued new accounting guidance that provides optional expedients and exceptions for applying GAAP to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another rate that is expected to be discontinued. The new accounting guidance became effective for the Company as of March 12, 2020 through December 31, 2022. The Company adopted this new accounting guidance on January 1, 2021. The adoption of this new accounting guidance did not have a material effect on the Company’s consolidated financial statements. In January 2020, the FASB issued new accounting guidance that states any equity security transitioning from the alternative method of accounting to the equity method, or vice versa, due to an observable transaction, will be remeasured immediately before the transition. In addition, the new accounting guidance clarifies the accounting for certain non-derivative forward contracts or purchased call options to acquire equity securities stating such instruments will be measured using the fair value principles before settlement or exercise. The Company adopted this new accounting guidance on January 1, 2021. The adoption of this new accounting guidance did not have a material effect on the Company’s consolidated financial statements. In December 2019, the FASB issued new accounting guidance to clarify and simplify the accounting for income taxes. Changes under the new guidance includes eliminating certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The Company adopted this new accounting guidance on January 1, 2021. The adoption of this new accounting guidance did not have a material effect on the Company’s consolidated financial statements. Accounting pronouncements issued but not adopted as of December 31, 2021 In October 2021, the FASB issued new accounting guidance that requires contract assets and contract liabilities (i.e., deferred revenue) acquired in a business combination to be recognized and measured by the acquirer on the acquisition date in accordance with Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers. Under current GAAP, an acquirer generally recognizes assets acquired and liabilities assumed in a business combination, including contract assets and contract liabilities arising from revenue contracts with customers and other similar contracts that are accounted for in accordance with ASC 606, at fair value on the acquisition date. Generally, this new guidance will result in the acquirer recognizing contract assets and contract liabilities at the same amounts recorded by the acquiree. The new accounting guidance will be effective for the Company on January 1, 2023, with early adoption permitted. The Company plans on adopting this new accounting guidance effective January 1, 2022. The impact of this guidance on the Company's consolidated financial statements will depend on the size and nature of future acquisitions.

Revenues by Geography, Concentr

Revenues by Geography, Concentration of Credit Risk and Remaining Performance Obligations	12 Months Ended
	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenues by Geography, Concentration of Credit Risk and Remaining Performance Obligations	Revenues by Geography, Concentration of Credit Risk and Remaining Performance Obligations The Company attributes revenues to geographical region based upon where the services are performed. The following tables represent revenues by geographical region and reportable segment for the years ended December 31, 2021, 2020 and 2019: December 31, 2021 (in millions) Technology & Analytics Solutions Research & Development Solutions Contract Sales & Medical Solutions Total Revenues: Americas $ 2,610 $ 3,887 $ 351 $ 6,848 Europe and Africa 2,282 1,899 176 4,357 Asia-Pacific 642 1,770 257 2,669 Total revenues $ 5,534 $ 7,556 $ 784 $ 13,874 December 31, 2020 (in millions) Technology & Analytics Solutions Research & Development Solutions Contract Sales & Medical Solutions Total Revenues: Americas $ 2,413 $ 2,680 $ 326 $ 5,419 Europe and Africa 1,844 1,667 184 3,695 Asia-Pacific 601 1,413 231 2,245 Total revenues $ 4,858 $ 5,760 $ 741 $ 11,359 December 31, 2019 (in millions) Technology & Analytics Solutions Research & Development Solutions Contract Sales & Medical Solutions Total Revenues: Americas $ 2,370 $ 2,693 $ 399 $ 5,462 Europe and Africa 1,543 1,734 200 3,477 Asia-Pacific 573 1,361 215 2,149 Total revenues $ 4,486 $ 5,788 $ 814 $ 11,088 No individual country, except for the United States, accounted for 10% or more of total revenues for the year ended December 31, 2021. For the year ended December 31, 2021, revenues in the United States accounted for approximately 34% of total revenues. No individual country, except for the United States and the United Kingdom, accounted for 10% or more of total revenues for the years ended December 31, 2020 and 2019. For the year ended December 31, 2020, revenues in the United States and the United Kingdom accounted for approximately 35% and 10% of total revenues, respectively. For the year ended December 31, 2019, revenues in the United States and the United Kingdom accounted for approximately 45% and 10% of total revenues, respectively. No individual customer represented 10% or more of total revenues for the years ended December 31, 2021, 2020 and 2019. Transaction Price Allocated to the Remaining Performance Obligations

Trade Accounts Receivable, Unbi

Trade Accounts Receivable, Unbilled Services and Unearned Income	12 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Trade Accounts Receivable, Unbilled Services and Unearned Income	Trade Accounts Receivable, Unbilled Services and Unearned Income Trade accounts receivables and unbilled services consist of the following: December 31, (in millions) 2021 2020 Billed $ 1,275 $ 1,181 Unbilled services 1,309 1,263 Trade accounts receivable and unbilled services 2,584 2,444 Allowance for doubtful accounts (33) (34) Trade accounts receivable and unbilled services, net $ 2,551 $ 2,410 Unbilled services and unearned income was as follows: December 31, (in millions) 2021 2020 Change Unbilled services $ 1,309 $ 1,263 $ 46 Unearned income (1,825) (1,252) (573) Net balance $ (516) $ 11 $ (527) Unbilled services, which is comprised of approximately 62% of unbilled receivables and 38% of contract assets as of December 31, 2021, increased by $46 million as compared to December 31, 2020. Contract assets are unbilled services for which invoicing is based on the timing of certain milestones related to service contracts for clinical research whereas unbilled receivables are billable upon the passage of time. Unearned income increased by $573 million over the same period resulting in a decrease of $527 million in the net balance of unbilled services and unearned income between December 31, 2021 and 2020. Decrease in the net balance is driven by the difference in timing of revenue recognition in accordance with ASC 606, Revenue from Contracts with Customers, related to the Company’s Research & Development Solutions contracts (which is based on the percentage of costs incurred) versus the timing of invoicing, which is based on certain milestones.

Investments

Investments	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Investments	Investments Debt, Equity and Other Securities Current The Company’s short-term investments in debt, equity and other securities consist primarily of trading investments in mutual funds and are measured at fair value with realized and unrealized gains and losses recorded in other income, net on the accompanying consolidated statements of income. Long-term The Company’s long-term equity investments (except those accounted for under the equity method, those that result in consolidation of the investee and certain other investments) are measured at fair value and any changes in fair value are recognized in net income at the end of each reporting period. For equity investments that do not have readily determinable fair values and do not qualify for the existing practical expedient in ASC 820, Fair Value Measurement, to estimate fair value using the net asset value per share of the investment, the Company applies the measurement alternative and measures those investments at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer at each reporting period. Unconsolidated Affiliates The Company accounts for its investments in unconsolidated affiliates under the equity method of accounting and records its pro rata share of its losses or earnings from these investments in equity in earnings (losses) of unconsolidated affiliates. The following is a summary of the Company’s investments in unconsolidated affiliates: December 31, (in millions) 2021 2020 NovaQuest Pharma Opportunities Fund III, L.P. (“NQ Fund III”) $ 7 $ 7 NovaQuest Pharma Opportunities Fund IV, L.P. (“NQ Fund IV”) 12 8 NovaQuest Pharma Opportunities Fund V, L.P. (“NQ Fund V”) 22 17 NovaQuest Private Equity Fund I, L.P. (“NQ PE Fund I”) 7 3 NostraData Pty Ltd. (“NostraData”) 18 18 Inteliquet (“Inteliquet”) — 16 Helparound ("Helparound") 3 3 Longwood Fund V, L.P. ("Longwood") 3 1 Other 16 11 $ 88 $ 84 Variable Interest Entities As of December 31, 2021, the Company’s investments in unconsolidated variable interest entities (“VIEs”) and its estimated maximum exposure to loss were as follows: (in millions) Investments in Unconsolidated VIEs Maximum Exposure to Loss NQ Fund III $ 7 $ 12 NQ Fund IV 12 14 NQ Fund V 22 51 NQ PE Fund I 7 8 Longwood 3 10 Other 5 9 $ 56 $ 104

Derivatives

Derivatives	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	Derivatives Foreign Exchange Risk Management The Company transacts business in more than 100 countries and is subject to risks associated with fluctuating foreign exchange rates. Accordingly, the Company enters into foreign currency forward contracts to hedge certain forecasted foreign exchange cash flows arising from service contracts (“Service Contract Hedging”). It is the Company’s policy to enter into foreign currency forward contracts only to the extent necessary to reduce earnings and cash flow volatility associated with foreign exchange rate movements. The Company does not enter into foreign currency forward contracts for investment or speculative purposes. The principal currency hedged in 2021 was the British Pound. Service Contract Hedging contracts are designated as cash flow hedges and are carried at fair value, with changes in the fair value recorded to AOCI. The change in fair value is reclassified from AOCI to earnings in the period in which the hedged transaction occurs. These contracts have various expiration dates through September 2022. As of December 31, 2021 and 2020, the Company had open Service Contract Hedging contracts to hedge certain forecasted foreign currency cash flow transactions occurring in 2022 and 2021 with notional amounts totaling $110 million and $70 million, respectively. For accounting purposes these hedges are considered highly effective. As of December 31, 2021 and 2020, the Company had recorded gross unrealized gains (losses) of $— million and $(3) million, and $5 million and $— million, respectively, related to these contracts. Upon expiration of the hedge instruments in 2021, the Company reclassified the unrealized holding gains and losses on the derivative instruments included in AOCI into earnings. The unrealized gains (losses) are included in other current assets and other liabilities on the accompanying consolidated balance sheets as of December 31, 2021 and 2020. Interest Rate Risk Management The Company has entered into interest rate swap agreements for purposes of managing its exposure to interest rate fluctuations. On July 19, 2018, the Company entered into two forward starting interest rate swaps (“2018 Swaps”) with a total notional value of $500 million in an effort to limit its exposure to changes in the variable interest rate on its Senior Secured Credit Facilities (see Note 10 for additional information). Interest on the 2018 Swaps began accruing on June 28, 2019 and the interest rate swaps expire on June 28, 2024. The Company pays a fixed rate of 3.0% and receives a variable rate of interest equal to the three-month LIBOR on the 2018 Swaps. On March 27, 2020, the Company entered into an interest rate swap with a notional value of $1 billion in an effort to limit its exposure to changes in the variable interest rate on its Senior Secured Credit Facilities ( see Note 10 for additional information ). Interest on the swap began accruing on March 31, 2020 and the swap expires on March 31, 2023. The Company pays a fixed rate of 0.56% and receives a variable rate of interest equal to the one-month LIBOR on the swap. On June 4, 2020, the Company entered into an interest rate swap with a notional value of $300 million in an effort to limit its exposure to changes in the variable interest rate on its Senior Secured Credit Facilities ( see Note 10 for additional information ). Interest on the swap began accruing on June 30, 2020 and the swap expires on June 28, 2024. The Company pays a fixed rate of 0.54% and receives a variable rate of interest equal to the three-month LIBOR on the swap. The critical terms of the swaps are substantially the same as the underlying borrowings. These interest rate swaps are accounted for as cash flow hedges as these transactions were executed to hedge the Company's interest payments and for accounting purposes are considered highly effective. As such, the effective portion of the hedges is recorded as unrealized gains (losses) on derivatives included in AOCI. The fair value of these interest rate swaps represents the present value of the anticipated net payments the Company will make to the counterparty, which, when they occur, are reflected as interest expense on the consolidated statements of income. These interest rate swaps result in a total debt mix of approximately 63% fixed rate debt and 37% variable rate debt. Net Investment Risk Management As of December 31, 2021, the Company's foreign currency denominated debt balance (net of original issue discount) designated as a hedge of its net investment in certain foreign subsidiaries totaled €5,227 million ($5,929 million). The amount of foreign exchange gains (losses) related to the net investment hedge included in the cumulative translation adjustment component of AOCI was $475 million, $(561) million and $97 million for the years ended December 31, 2021, 2020 and 2019, respectively. The fair values of the Company’s derivative instruments, on a gross basis, and the line items on the accompanying consolidated balance sheets to which they were recorded are summarized in the following table: December 31, 2021 December 31, 2020 (in millions) Balance Sheet Classification Assets Liabilities Notional Assets Liabilities Notional Derivatives designated as hedging instruments: Foreign exchange forward contracts Other current assets and liabilities $ — 3 $ 110 $ 5 $ — $ 70 Interest rate swaps Other assets and liabilities 4 24 1,800 — 55 1,800 Derivatives not designated as hedging instruments: Interest rate swaps Other liabilities — — — — 1 356 Total derivatives $ 4 $ 27 $ 5 $ 56 The pre-tax effect of the Company’s cash flow hedging instruments on other comprehensive income (loss) is summarized in the following table: Year Ended December 31, (in millions) 2021 2020 2019 Foreign exchange forward contracts $ (8) $ 1 $ 2 Interest rate derivatives 35 (28) (22) Total $ 27 $ (27) $ (20) The Company expects approximately $23 million of pre-tax unrealized losses related to its foreign exchange contracts and interest rate derivatives included in AOCI as of December 31, 2021 to be reclassified into earnings within the next twelve months. The total amount of cash flow hedge effect on the income statement is immaterial for the year ended December 31, 2021.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company records certain assets and liabilities at fair value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. A three-level fair value hierarchy that prioritizes the inputs used to measure fair value is described below. This hierarchy requires entities to maximize the use of observable inputs and minimize the use of unobservable inputs. The three levels of inputs used to measure fair value are as follows: • Level 1—Quoted prices in active markets for identical assets or liabilities. • Level 2—Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. • Level 3—Unobservable inputs that are supported by little or no market activity. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs. The carrying values of cash, cash equivalents, accounts receivable and accounts payable approximated their fair values as of December 31, 2021 and 2020 due to their short-term nature. As of December 31, 2021 and 2020, the fair value of total debt approximated $12,255 million and $12,746 million, respectively, as determined under Level 1 and Level 2 measurements for these financial instruments. Recurring Fair Value Measurements The following table summarizes the fair value of the Company’s financial assets and liabilities that are measured and reported at fair value on a recurring basis as of December 31, 2021: (in millions) Level 1 Level 2 Level 3 Total Assets: Marketable securities $ 145 $ — $ — $ 145 Derivatives — 4 — 4 Total $ 145 $ 4 $ — $ 149 Liabilities: Derivatives $ — $ 27 $ — $ 27 Contingent consideration — — 76 76 Total $ — $ 27 $ 76 $ 103 The following table summarizes the fair value of the Company’s financial assets and liabilities that are measured and reported at fair value on a recurring basis as of December 31, 2020: (in millions) Level 1 Level 2 Level 3 Total Assets: Marketable securities $ 122 $ — $ — $ 122 Derivatives — 5 — 5 Total $ 122 $ 5 $ — $ 127 Liabilities: Derivatives $ — $ 56 $ — $ 56 Contingent consideration — — 119 119 Total $ — $ 56 $ 119 $ 175 Below is a summary of the valuation techniques used in determining fair value: Marketable securities —The Company values trading and available-for-sale securities using the quoted market value of the securities held. Derivatives —Derivatives consist of foreign exchange contracts and interest rate swaps. The fair value of foreign exchange contracts is based on observable market inputs of spot and forward rates or using other observable inputs. The fair value of the interest rate swaps is the estimated amount that the Company would receive or pay to terminate such agreements, taking into account market interest rates and the remaining time to maturities or using market inputs with mid-market pricing as a practical expedient for bid-ask spread. Contingent consideration —The Company values contingent consideration related to business combinations using a weighted probability calculation of potential payment scenarios discounted at rates reflective of the risks associated with the expected future cash flows. Assumptions used to estimate the fair value of contingent consideration include various financial metrics (revenue performance targets and operating forecasts) and the probability of achieving the specific targets. Based on the assessments of the probability of achieving specific targets, as of December 31, 2021 the Company has accrued approximately 72% of the maximum contingent consideration payments that could potentially become payable. The following table summarizes the changes in Level 3 financial assets and liabilities measured on a recurring basis for the year ended December 31,: Contingent Consideration (in millions) 2021 2020 2019 Balance as of January 1 $ 119 $ 113 $ 123 Business combinations 39 47 40 Contingent consideration paid (39) (22) (46) Revaluations included in earnings and foreign currency translation adjustments (43) (19) (4) Balance as of December 31 $ 76 $ 119 $ 113 The current portion of contingent consideration is included within accrued expenses and the long-term portion is included within other liabilities on the accompanying consolidated balance sheets. Revaluations of contingent consideration are recognized in other income, net on the accompanying consolidated statements of income. A change in significant unobservable inputs above could result in a significantly higher or lower fair value measurement of contingent consideration. Non-recurring Fair Value Measurements Certain assets are carried on the accompanying consolidated balance sheets at cost and are not remeasured to fair value on a recurring basis. These assets include equity investments that do not have readily determinable fair values that are assessed for impairment quarterly or annually, when there is an observable event, and when a triggering event occurs, and goodwill and other identifiable intangible assets that are tested for impairment annually and when a triggering event occurs. See Note 4 and 8 for additional information. As of December 31, 2021, assets carried on the balance sheet and not remeasured to fair value on a recurring basis totaled approximately $18,374 million and were identified as Level 3. These assets are comprised of cost and equity method investments of $130 million, goodwill of $13,301 million and other identifiable intangibles, net of $4,943 million. Cost and Equity Method Investments —The inputs available for valuing investments in non-public portfolio companies are generally not easily observable. The valuation of non-public investments requires judgment by the Company due to the absence of quoted market values, inherent lack of liquidity and the long-term nature of such assets. When a triggering event occurs, the Company considers a wide range of available market data when assessing the estimated fair value. Such market data includes observations of the trading multiples of public companies considered comparable to the private companies being valued as well as publicly disclosed merger transactions involving comparable private companies. In addition, valuations are adjusted to account for company-specific issues, the lack of liquidity inherent in a non-public investment and the fact that comparable public companies are not identical to the companies being valued. Such valuation adjustments are necessary because in the absence of a committed buyer and completion of due diligence similar to that performed in an actual negotiated sale process, there may be company-specific issues that are not fully known that may affect value. Further, a variety of additional factors are reviewed by the Company, including, but not limited to, financing and sales transactions with third parties, current operating performance and future expectations of the particular investment, changes in market outlook and the third-party financing environment. Because of the inherent uncertainty of valuations, estimated valuations may differ significantly from the values that would have been used had a ready market for the securities existed, and the differences could be material. Goodwill —Goodwill represents the difference between the purchase price and the fair value of the identifiable tangible and intangible net assets resulting from business combinations. On an annual basis, and if a triggering event occurs, the Company performs a qualitative analysis to determine whether it is more likely than not that the estimated fair value of a reporting unit is less than its carrying amount. This includes a qualitative analysis of macroeconomic conditions, industry and market considerations, cost factors, financial performance, fair value history and other company specific events. If this qualitative analysis indicates that it is more likely than not that the estimated fair value is less than the carrying value for the respective reporting unit, the Company would then need to calculate the fair value of the reporting unit. If the reporting unit calculated fair value is less than the carrying amount, the Company would record an impairment charge for the difference, with the impairment charge not to exceed the carrying amount of Goodwill. See Note 8 for additional information. Definite-lived Intangible Assets —If a triggering event occurs, the Company determines the estimated fair value of definite-lived intangible assets by determining the present value of the expected cash flows. See Note 8 for additional information.

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment The major classes of property and equipment were as follows: December 31, (in millions) 2021 2020 Land, buildings and leasehold improvements $ 376 $ 351 Equipment 745 657 Furniture and fixtures 72 76 Transportation equipment 69 71 Property and equipment, gross 1,262 1,155 Less accumulated depreciation (765) (673) Property and equipment, net $ 497 $ 482 Property and equipment depreciation expense was as follows: Year Ended December 31, (in millions) 2021 2020 2019 Depreciation expense $ 147 $ 134 $ 128

Goodwill and Identifiable Intan

Goodwill and Identifiable Intangible Assets	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Identifiable Intangible Assets	Goodwill and Other Identifiable Intangible Assets As of December 31, 2021, the Company has approximately $4,943 million of other identifiable intangible assets. Amortization expense associated with other identifiable definite-lived intangible assets was as follows: Year Ended December 31, (in millions) 2021 2020 2019 Amortization expense $ 1,117 $ 1,153 $ 1,074 Estimated amortization expense for existing other identifiable intangible assets is expected to be approximately $826 million, $748 million, $651 million, $546 million and $409 million for the years ending December 31, 2022, 2023, 2024, 2025 and 2026, respectively. Estimated amortization expense can be affected by various factors, including future acquisitions or divestitures of service and/or licensing and distribution rights or impairments. The following is a summary of other identifiable intangible assets: December 31, 2021 December 31, 2020 (in millions) Gross Accumulated Net Gross Accumulated Net Definite-lived other identifiable intangible assets: Client relationships and backlog $ 5,193 $ (2,024) $ 3,169 $ 5,095 $ (1,745) $ 3,350 Trademarks, trade name and other 550 (241) 309 544 (212) 332 Databases 1,889 (1,853) 36 1,930 (1,629) 301 Software and related assets 2,637 (1,213) 1,424 2,109 (915) 1,194 Non-compete agreements 17 (12) 5 28 (18) 10 $ 10,286 $ (5,343) $ 4,943 $ 9,706 $ (4,519) $ 5,187 Indefinite-lived other identifiable intangible assets: Trade name $ — $ — $ — $ 18 $ — $ 18 The following is a summary of goodwill by segment for the years ended December 31, 2021 and 2020: (in millions) Technology & Analytics Solutions Research & Development Solutions Contract Sales & Medical Solutions Consolidated Balance as of December 31, 2019 $ 10,374 $ 1,646 $ 139 $ 12,159 Business combinations 86 29 — 115 Impact of foreign currency fluctuations and other 404 (29) 5 380 Balance as of December 31, 2020 10,864 1,646 144 12,654 Business combinations 874 160 26 1,060 Impact of foreign currency fluctuations and other (401) (4) (8) (413) Balance as of December 31, 2021 $ 11,337 $ 1,802 $ 162 $ 13,301 There were no goodwill impairment losses for the years ended December 31, 2021, 2020 and 2019.

Accrued Expenses

Accrued Expenses	12 Months Ended
	Dec. 31, 2021
Payables and Accruals [Abstract]
Accrued Expenses	Accrued Expenses Accrued expenses consist of the following: December 31, (in millions) 2021 2020 Compensation, including bonuses, fringe benefits and payroll taxes $ 946 $ 852 Restructuring 30 53 Interest 56 55 Client contract related 884 849 Professional fees 102 92 Contingent consideration and deferred purchase price 31 59 Other 311 272 $ 2,360 $ 2,232

Credit Arrangements

Credit Arrangements	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Credit Arrangements	Credit Arrangements The following is a summary of the Company’s revolving credit facilities as of December 31, 2021: Facility Interest Rates $1,500 million (revolving credit facility) LIBOR in the relevant currency borrowed plus a margin of 1.25% as of December 31, 2021 $110 million (receivables financing facility) LIBOR Market Index Rate (0.10% as of December 31, 2021) plus 0.90% The following table summarizes the Company’s debt at the dates indicated: December 31, (dollars in millions) 2021 2020 Revolving Credit Facility due 2026: U.S. Dollar denominated borrowings—U.S. Dollar LIBOR at average floating rates of 1.35% $ 100 $ — Senior Secured Credit Facilities: Term A Loan due 2023—U.S. Dollar — 728 Term A Loan due 2023—U.S. Dollar — 766 Term A Loan due 2026—U.S. Dollar LIBOR at average floating rates of 1.47% 1,415 — Term A Loan due 2023—Euro — 400 Term A Loan due 2026—Euro LIBOR at average floating rates of 1.25% 351 — Term B Loan due 2024—U.S. Dollar LIBOR at average floating rates of 1.85% 510 535 Term B Loan due 2024—Euro LIBOR at average floating rates of 2.00% 1,242 1,413 Term B Loan due 2025—U.S. Dollar LIBOR at average floating rates of 1.85% 670 726 Term B Loan due 2025—U.S. Dollar LIBOR at average floating rates of 1.97% 860 926 Term B Loan due 2025—Euro LIBOR at average floating rates of 2.00% 592 697 5.0% Senior Notes due 2027—U.S. Dollar denominated 1,100 1,100 5.0% Senior Notes due 2026—U.S. Dollar denominated 1,050 1,050 2.875% Senior Notes due 2025—Euro denominated 476 515 3.25% Senior Notes due 2025—Euro denominated — 1,748 2.25% Senior Notes due 2028—Euro denominated 817 883 2.875% Senior Notes due 2028—Euro denominated 807 872 1.750% Senior Notes due 2026—Euro denominated 624 — 2.250% Senior Notes due 2029—Euro denominated 1,021 — Receivables financing facility due 2022—U.S. Dollar LIBOR — 240 Receivables financing facility due 2024—U.S. Dollar LIBOR at average floating rates of 1.00% 550 — Principal amount of debt 12,185 12,600 Less: unamortized discount and debt issuance costs (60) (67) Less: current portion (91) (149) Long-term debt $ 12,034 $ 12,384 Contractual maturities of long-term debt as of December 31, 2021 are as follows: (in millions) 2022 $ 91 2023 91 2024 2,392 2025 2,690 2026 3,178 Thereafter 3,743 $ 12,185 Senior Secured Credit Facilities 2021 Financing Transactions On August 25, 2021, we entered into Amendment No. 9 (the “Amendment”) to the Company’s Fourth Amended and Restated Credit Agreement (the “Prior Credit Agreement,” and together with the Amendment, the "Fifth Amended and Restated Credit Agreement") to (i) extend the maturity of our revolving credit facility to 2026, (ii) refinance our existing term A loans with a new class of term A loans that mature in 2026 and (iii) add IQVIA RDS Inc. as a borrower under our various senior secured credit facilities (collectively, the “senior secured credit facilities”). In connection with this Amendment, we recognized a $2 million loss on extinguishment of debt, which includes fees and related expenses. On September 14, 2021, we repaid $250 million of our term B loans under the senior secured credit facilities using the proceeds from the increased loans under our receivables financing facility. As of December 31, 2021, the Company’s Fifth Amended and Restated Credit Agreement provided financing through the senior secured credit facilities of up to approximately $7,140 million, which consisted of $5,740 million principal amounts of debt outstanding (as detailed in the table above), and $1,400 million of available borrowing capacity on the $1,500 million revolving credit facility and standby letters of credit. The revolving credit facility is comprised of a $675 million senior secured revolving facility available in U.S. dollars, a $600 million senior secured revolving facility available in U.S. dollars, Euros, Swiss Francs and other foreign currencies, and a $225 million senior secured revolving facility available in U.S. dollars and Yen. 2020 Financing Transactions As of December 31, 2020, the Prior Credit Agreement provided financing through the senior secured credit facilities of up to approximately $7,692 million, which consisted of $6,192 million principal amounts of debt outstanding (as detailed in the table above), $4 million of issued standby letters of credit and $1,496 million of available borrowing capacity on the revolving credit facility. On March 11, 2020, the Company entered into Amendment No. 7 to the Prior Credit Agreement to borrow $900 million in additional U.S. Dollar denominated term A loans due 2023 (the “TLA-2 Loans”) and, on March 30, 2020, entered into Amendment No. 8 to the Prior Credit Agreement to amend certain terms of the TLA-2 Loans. The TLA-2 Loans bear interest based on the U.S. Dollar LIBOR plus a margin ranging from 1.500% to 2.250%, with a U.S. Dollar LIBOR floor of 1.000% per annum. The proceeds from the TLA-2 Loans were used to repay outstanding revolving credit loans under the Company's senior secured credit facilities. On March 30, 2020, the Company prepaid $100 million of the TLA-2 loans. Senior Notes 2021 Financing Transactions On March 3, 2021, IQVIA Inc. (the “Issuer”), a wholly owned subsidiary of the Company, completed the issuance and sale of €1,450 million in gross proceeds of the Issuer's (i) €550 million aggregate principal amount of its 1.750% Senior Notes due 2026 (the “2026 Notes”) and (ii) €900 million aggregate principal amount of its 2.250% Senior Notes due 2029 (the “2029 Notes” and, together with the 2026 Notes, the “Notes”). The Notes were issued pursuant to an Indenture, dated March 3, 2021, among the Issuer, U.S. Bank National Association, as trustee of the Notes, and certain subsidiaries of the Issuer as guarantors. The 2026 Notes are unsecured obligations of the Issuer, will mature on March 15, 2026 and bear interest at the rate of 1.750% per year, with interest payable semi-annually on March 15 and September 15 of each year, beginning on September 15, 2021. The 2029 Notes are unsecured obligations of the Issuer, will mature on March 15, 2029 and bear interest at the rate of 2.250% per year, with interest payable semi-annually on March 15 and September 15 of each year, beginning on September 15, 2021. The Issuer may redeem (i) the 2026 Notes prior to their final stated maturity, subject to a customary make-whole premium, at any time prior to March 15, 2023 (subject to a customary “equity claw” redemption right) and thereafter subject to a redemption premium declining from 0.875% to 0.000% and (ii) the 2029 Notes prior to their final stated maturity, subject to a customary make-whole premium, at any time prior to March 15, 2024 (subject to a customary “equity claw” redemption right) and thereafter subject to a redemption premium declining from 1.125% to 0.000%. The Issuer may choose to redeem the 2026 Notes and the 2029 Notes, either together or separately, on a non-ratable basis. The proceeds from the Notes offering were used to redeem all of the Issuer’s outstanding 3.250% senior notes due 2025 (the “3.250% Notes”), including the payment of premiums in respect thereof and to pay fees and expenses related to the Notes offering. The Issuer’s obligations with respect to the 3.250% Notes were discharged on the same day as the Issuer completed the issuance of the Notes. In connection with this transaction, we recognized a $24 million loss on extinguishment of debt, which includes fees and related expenses. 2020 Financing Transactions On June 24, 2020, the Issuer completed the issuance and sale of €711 million in gross proceeds of the Issuer’s 2.875% senior notes due 2028 (the “2.875% Notes”). The 2.875% Notes were issued pursuant to an Indenture, dated June 24, 2020, among the Issuer, U.S. Bank National Association, as trustee of the Notes, and certain subsidiaries of the Issuer as guarantors. The 2.875% Notes are unsecured obligations of the Issuer, will mature on June 15, 2028 and bear interest at the rate of 2.875% per year, with interest payable semiannually on June 15 and December 15 of each year, beginning on December 15, 2020. The Issuer may redeem the 2.875% Notes prior to their final stated maturity, subject to a customary make-whole premium, at any time prior to June 15, 2023 (subject to a customary “equity claw” redemption right) and thereafter subject to a redemption premium declining from 1.438% to 0.000%. The proceeds from the 2.875% Notes offering were used to redeem all of the Issuer’s outstanding 3.500% senior notes due 2024 (the “3.500% Notes”), including the payment of premiums in respect thereof, to repay a portion of the existing borrowings under the Issuer’s revolving credit facility and to pay fees and expenses related to the offering. The Issuer’s obligations with respect to the 3.500% Notes were discharged on the same day as the Issuer completed the issuance of the 3.500% Notes, and the 3.500% Notes were redeemed on July 9, 2020. Receivables Financing Facility On August 13, 2021, the Company amended its receivables financing facility (the “Receivables Amendment”) to extend the term of the facility to October 1, 2024 and to increase the size of the facility to $550 million from $300 million. Under the receivables financing facility, certain of our accounts receivable are sold on a non-recourse basis by certain of our consolidated subsidiaries (each, an “Originator”) to another of our consolidated subsidiaries, a bankruptcy-remote special purpose entity (the “SPE”). The SPE obtained a term loan and revolving loan commitment from a third-party lender, secured by liens on the assets of the SPE, to finance the purchase of the accounts receivable, which includes a $440 million term loan and a $110 million revolving loan commitment. Pursuant to the Receivables Amendment, we also added three additional subsidiaries as Originators. As of December 31, 2021, no additional amounts of revolving loans were available under the receivables financing facility. The Company has guaranteed the performance of the obligations of existing and future subsidiaries that sell and service the accounts receivable under the receivables financing facility. The assets of the SPE are not available to satisfy any of the Company’s obligations or any obligations of its subsidiaries. On November 25, 2020, the Company amended its receivables financing facility to exclude certain of its accounts receivable from the facility. Restrictive Covenants The Company’s debt agreements provide for certain covenants and events of default customary for similar instruments, including a covenant not to exceed a specified ratio of consolidated senior secured net indebtedness to Consolidated EBITDA, as defined in the Fifth Amended and Restated Credit Agreement and a covenant to maintain a specified minimum interest coverage ratio. If an event of default occurs under any of the Company’s or the Company’s subsidiaries’ financing arrangements, the creditors under such financing arrangements will be entitled to take various actions, including the acceleration of amounts due under such arrangements, and in the case of the lenders under the Fifth Amended and Restated Credit Agreement, other actions permitted to be taken by a secured creditor. The Company’s long-term debt arrangements contain usual and customary restrictive covenants that, among other things, place limitations on the Company’s ability to declare dividends. As of December 31, 2021, the Company was in compliance in all material respects with the financial covenants under the Company’s financing arrangements.

Leases

Leases	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Leases	Leases The Company has operating leases for corporate offices, datacenters, motor vehicles and certain equipment, many of which contain renewal and escalation clauses. These operating leases expire at various dates through 2036 with options to cancel certain leases at various intervals. The Company also has finance leases for offices and lab spaces that expire at various dates through 2044. Based on the timing of payments on the finance leases the cash flow impact is not material for the years ended December 31, 2021, 2020 and 2019. The components of lease expense were as follows: (in millions) Classification Year Ended December 31, 2021 Year Ended December 31, 2020 Year Ended December 31, 2019 Operating lease cost (1) Selling, general and administrative expenses $ 184 $ 209 $ 193 Finance lease cost (1) Depreciation and amortization, and Interest expense 10 6 — Total lease cost $ 194 $ 215 $ 193 (1) Includes variable lease costs, which are immaterial. Other information related to leases was as follows: (in millions) Year Ended December 31, 2021 Year Ended December 31, 2020 Year Ended December 31, 2019 Supplemental Cash Flow: Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 175 $ 211 $ 195 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 81 $ 109 $ 96 Finance leases $ 44 $ 119 $ — Weighted Average Remaining Lease Term: Operating leases 4.53 years 4.58 years 5.01 years Finance leases 21.28 years 24.00 years — Weighted Average Discount Rate: Operating leases 3.36 % 3.78 % 4.22 % Finance leases 2.70 % 3.18 % — Future minimum lease payments under non-cancellable leases as of December 31, 2021 were as follows: (in millions) Operating Leases Finance Leases 2022 $ 143 $ 10 2023 114 10 2024 86 10 2025 70 10 2026 33 10 Thereafter 48 201 Total future minimum lease payments 494 251 Less imputed interest (41) (65) Total $ 453 $ 186 Reported as of December 31, 2021: Other current liabilities $ 140 $ 9 Operating lease liabilities 313 — Other liabilities — 177 Total $ 453 $ 186
Leases	Leases The Company has operating leases for corporate offices, datacenters, motor vehicles and certain equipment, many of which contain renewal and escalation clauses. These operating leases expire at various dates through 2036 with options to cancel certain leases at various intervals. The Company also has finance leases for offices and lab spaces that expire at various dates through 2044. Based on the timing of payments on the finance leases the cash flow impact is not material for the years ended December 31, 2021, 2020 and 2019. The components of lease expense were as follows: (in millions) Classification Year Ended December 31, 2021 Year Ended December 31, 2020 Year Ended December 31, 2019 Operating lease cost (1) Selling, general and administrative expenses $ 184 $ 209 $ 193 Finance lease cost (1) Depreciation and amortization, and Interest expense 10 6 — Total lease cost $ 194 $ 215 $ 193 (1) Includes variable lease costs, which are immaterial. Other information related to leases was as follows: (in millions) Year Ended December 31, 2021 Year Ended December 31, 2020 Year Ended December 31, 2019 Supplemental Cash Flow: Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 175 $ 211 $ 195 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 81 $ 109 $ 96 Finance leases $ 44 $ 119 $ — Weighted Average Remaining Lease Term: Operating leases 4.53 years 4.58 years 5.01 years Finance leases 21.28 years 24.00 years — Weighted Average Discount Rate: Operating leases 3.36 % 3.78 % 4.22 % Finance leases 2.70 % 3.18 % — Future minimum lease payments under non-cancellable leases as of December 31, 2021 were as follows: (in millions) Operating Leases Finance Leases 2022 $ 143 $ 10 2023 114 10 2024 86 10 2025 70 10 2026 33 10 Thereafter 48 201 Total future minimum lease payments 494 251 Less imputed interest (41) (65) Total $ 453 $ 186 Reported as of December 31, 2021: Other current liabilities $ 140 $ 9 Operating lease liabilities 313 — Other liabilities — 177 Total $ 453 $ 186

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies The Company and its subsidiaries are involved in legal and tax proceedings, claims and litigation arising in the ordinary course of business. Management periodically assesses the Company’s liabilities and contingencies in connection with these matters based upon the latest information available. For those matters where management currently believes it is probable that the Company will incur a loss and that the probable loss or range of loss can be reasonably estimated, the Company has recorded reserves in the consolidated financial statements based on its best estimates of such loss. In other instances, because of the uncertainties related to either the probable outcome or the amount or range of loss, management is unable to make a reasonable estimate of a liability, if any. However, even in many instances where the Company has recorded an estimated liability, the Company is unable to predict with certainty the final outcome of the matter or whether resolution of the matter will materially affect the Company’s results of operations, financial position or cash flows. As additional information becomes available, the Company adjusts its assessments and estimates of such liabilities accordingly. The Company routinely enters into agreements with third parties, including our clients and suppliers, all in the normal course of business. In these agreements, the Company sometimes agrees to indemnify and hold harmless the other party for any damages such other party may suffer as a result of potential intellectual property infringement and other claims. The Company has not accrued a liability with respect to these matters generally, as the exposure is considered remote. Based on its review of the latest information available, management does not expect the impact of pending legal and tax proceedings, claims and litigation, either individually or in the aggregate, to have a material adverse effect on the Company’s results of operations, cash flows or financial position. However, one or more unfavorable outcomes in any claim or litigation against the Company could have a material adverse effect for the period in which it is resolved. The following is a summary of certain legal matters involving the Company. On February 13, 2014, a group of approximately 1,200 medical doctors and 900 private individuals filed a civil lawsuit with the Seoul Central District Court against IMS Korea and two other defendants, KPA and the Korean Pharmaceutical Information Center (“KPIC”). The civil lawsuit alleges KPA and KPIC collected their personal information in violation of applicable privacy laws without the necessary consent through a software system installed on pharmacy computer systems in Korea, and that personal information was transferred to IMS Korea and sold to pharmaceutical companies. On September 11, 2017, the District Court issued a final decision that the encryption in use by the defendants since June 2014 was adequate to meet the requirements of the Korean Personal Information Privacy Act (“PIPA”) and the sharing of non-identified information for market research purposes was allowed under PIPA. The District Court also found an earlier version of encryption was insufficient to meet PIPA requirements, but no personal data had been leaked or re-identified. The District Court did not award any damages to plaintiffs. Approximately 280 medical doctors and 200 private individuals appealed the District Court decision. On May 3, 2019, the Appellate Court issued a final decision in which it concluded all of the non-identified information transferred by KPIC to IMS Korea for market research purposes violated PIPA, but did not award any damages to plaintiffs (affirming the District Court’s decision on this latter point). On May 24, 2019, approximately 247 plaintiffs appealed the Appellate Court’s decision to the Supreme Court. The Company believes the appeal is without merit and is vigorously defending its position. On July 23, 2015, indictments were issued by the Seoul Central District Prosecutors’ Office in South Korea against 24 individuals and companies alleging improper handling of sensitive health information in violation of, among others, South Korea’s Personal Information Protection Act. IMS Korea and two of its employees were among the individuals and organizations indicted. Although there is no assertion that IMS Korea used patient identified health information in any of its offerings, prosecutors allege that certain of IMS Korea’s data suppliers should have obtained patient consent when they converted sensitive patient information into non-identified data and that IMS Korea had not taken adequate precautions to reduce the risk of re-identification. On February 14, 2020, the Seoul Central District Court acquitted IMS Korea and its two employees of the charges of improper handling of sensitive health information, and the Prosecutor's Office appealed. On December 23, 2021, the appellate court affirmed the judgment of the Seoul Central District Court. The Prosecutor's Office has appealed to the Supreme Court. The Company intends to vigorously defend its position on appeal. On January 10, 2017, Quintiles IMS Health Incorporated and IMS Software Services Ltd. (collectively “IQVIA Parties”), filed a lawsuit in the U.S. District Court for the District of New Jersey against Veeva Systems, Inc. (“Veeva”) alleging Veeva unlawfully used IQVIA Parties intellectual property to improve Veeva data offerings, to promote and market Veeva data offerings and to improve Veeva technology offerings. IQVIA Parties seek injunctive relief, appointment of a monitor, the award of compensatory and punitive damages and reimbursement of all litigation expenses, including reasonable attorneys’ fees and costs. On March 13, 2017, Veeva filed counterclaims alleging anticompetitive business practices in violation of the Sherman Act and state laws. Veeva claims damages in excess of $200 million, and is seeking punitive damages and litigation costs, including attorneys’ fees. We believe the counterclaims are without merit, reject all counterclaims raised by Veeva and intend to vigorously defend IQVIA Parties’ position and pursue our claims against Veeva. Since the initial filings, the parties have filed additional litigations against each other, primarily concerning the use of IQVIA data with various other Veeva products. The parties are engaged in the discovery process in connection with these lawsuits. On May 7, 2021, the Court issued an order and opinion (the “Order”) in which it found significant evidence that Veeva had (1) misappropriated IQVIA data and unlawfully used it to improve Veeva data offerings, (2) engaged in a cover-up by deleting significant evidence of its theft of IQVIA’s trade secrets, and (3) improperly withheld certain evidence in furtherance of a crime and/or fraud against IQVIA. The Court imposed five sanctions against Veeva, including ordering three separate adverse inference instructions be issued to the jury and that IQVIA be permitted to present evidence to the jury of Veeva’s destruction efforts. Veeva is currently appealing the Order.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Stockholders' Equity	Stockholders’ Equity Preferred Stock The Company is authorized to issue 1.0 million shares of preferred stock, $0.01 per share par value. No shares of preferred stock were issued and outstanding as of December 31, 2021 or 2020. Equity Repurchase Program On October 30, 2013, the Board first approved the Repurchase Program, authorizing the repurchase of up to $125 million of either the Company’s common stock or vested in-the-money employee stock options, or a combination thereof. The Board increased the stock repurchase authorization under the Repurchase Program with respect to the repurchase of the Company's common stock by $600 million, $1.5 billion, $2.0 billion, $1.5 billion, and $2.0 billion, in 2015, 2016, 2017, 2018, and 2019 respectively. On February 10, 2022 the Board increased the stock repurchase authorization under the Repurchase Program with respect to the repurchase of the Company's common stock by an additional $2.0 billion, which increased the total amount that has been authorized under the Repurchase Program to $9.725 billion. The Repurchase Program does not obligate the Company to repurchase any particular amount of common stock or vested in-the- money employee stock options, and it may be modified, extended, suspended or discontinued at any time. As of December 31, 2021, the Company had remaining authorization to repurchase up to approximately $0.5 billion of its common stock under the Repurchase Program. The February 10, 2022 $2.0 billion increase in the stock repurchase authorization, increased the remaining authorization to repurchase common stock under the Repurchase Program up to approximately $2.5 billion. In addition, from time to time, the Company has repurchased and may continue to repurchase common stock through private or other transactions outside of the Repurchase Program. 2021 Offerings There were no equity offerings during the year. 2020 Offerings There were no equity offerings during the year. 2019 Offerings In March 2019, the Company completed an underwritten secondary public offering of 5 million shares of its common stock held by certain of the Company’s remaining private equity sponsors (the “Selling Stockholders”), of which the Company repurchased 1 million shares for an aggregate purchase price of approximately $140.8 million. The Company did not offer any stock in this transaction and did not receive any proceeds from the sale of the shares by the Selling Stockholders. Pursuant to an agreement with the underwriters, the Company’s per-share purchase price for repurchased shares was the same as the per share purchase price payable by the underwriters to the Selling Stockholders. Other Equity Repurchases On February 13, 2020, the Company agreed to purchase at market price an aggregate of 1 million shares of its common stock, par value $0.01 per share, in a private transaction from certain of its existing shareholders (the “February 2020 Repurchase”). In addition to the February 2020 Repurchase, certain of the Company’s remaining private equity sponsors informed the Company that they have sold 4 million shares of the Company’s common stock pursuant to Rule 144 under the Securities Act of 1933, as amended, for a total of 5 million shares. In August 2019, the Company agreed to purchase an aggregate of 1 million shares of its common stock, par value $0.01 per share, in a private transaction from certain of its existing shareholders (the “Repurchase”). In addition to the Repurchase, certain of the Company’s remaining private equity sponsors informed the Company that they have sold 4 million shares of the Company’s common stock pursuant to Rule 144 under the Securities Act of 1933, as amended, for a total of 5 million shares. Summary Below is a summary of the share repurchases made both under and outside of the Repurchase Program: Year Ended December 31, (in millions, except per share data) 2021 2020 2019 Number of shares of common stock repurchased 1.7 2.7 6.6 Aggregate purchase price $ 395 $ 423 $ 945 Average price per share $ 238.22 $ 155.63 $ 143.02 Non-controlling Interests On April 1, 2021 the Company acquired the 40% non-controlling interest in Q 2 Solutions, a fully consolidated subsidiary, from Quest Diagnostics Incorporated ("Quest") for approximately $758 million, financed with cash on hand. The transaction resulted in the Company having 100% ownership in Q 2 Solutions. As of December 31, 2021, the Company had no other material non-controlling interests.

Business Combinations

Business Combinations	12 Months Ended
	Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]
Business Combinations	Business Combinations The Company completed several individually immaterial acquisitions during the year ended December 31, 2021. The Company’s assessment of fair value, including the valuation of certain acquired intangibles, and the purchase price allocation related to these acquisitions is preliminary and subject to change upon completion. Further adjustments may be necessary as additional information related to the fair values of assets acquired and liabilities assumed is assessed during the measurement period (up to one year from the acquisition date). The Company recorded goodwill from these acquisitions, primarily attributable to assembled workforce and expected synergies. The consolidated financial statements include the results of the acquisitions subsequent to their respective closing dates. Pro forma information is not presented as pro forma results of operations would not be materially different to the actual results of operations of the Company. The following table provides certain financial information for these acquisitions: Year Ended December 31, (in millions) 2021 2020 Assets acquired: Cash and cash equivalents $ 40 $ 10 Other assets 75 22 Goodwill 1,060 115 Other identifiable intangibles 576 101 Liabilities assumed: Other liabilities (62) (9) Deferred income taxes, long-term (147) (5) Net assets acquired (1) $ 1,542 $ 234 (1) Total cash paid for acquisitions, net of cash acquired, in the accompanying consolidated statements of cash flows, includes contingent consideration and deferred purchase price of $44 million and $47 million for the years ended December 31, 2021 and 2020, respectively. The portion of goodwill deductible for income tax purposes was preliminarily assessed as $503 million and $99 million for the years ended December 31, 2021 and 2020, respectively. The following table provides a summary of the estimated fair value of certain intangible assets acquired: Year Ended December 31, (in millions) Amortization Period 2021 2020 Other identifiable intangibles: Customer relationships 10 - 18 years $ 393 $ 90 Non-compete agreements 3 - 5 years 2 2 Software and related assets 3 - 8 years 133 8 Trade names 3 - 15 years 31 1 Backlog 2 years 17 — Total Other identifiable intangibles $ 576 $ 101

Restructuring

Restructuring	12 Months Ended
	Dec. 31, 2021
Restructuring and Related Activities [Abstract]
Restructuring	Restructuring The Company has continued to take restructuring actions in 2021 to align its resources and reduce overcapacity to adapt to changing market conditions and integrate acquisitions. These actions include consolidating functional activities, eliminating redundant positions, and aligning resources with customer requirements. These restructuring actions are expected to continue into 2022. The management approved plans resulted in approximately $20 million, $52 million and $75 million of restructuring expense, net of reversals, which consisted of severance, facility closure costs and other exit-related costs in 2021, 2020, and 2019, respectively. The following amounts were recorded for the restructuring plans: (in millions) Severance and Related Costs Exit Costs Total Balance as of December 31, 2019 $ 64 $ 3 $ 67 Expense, net of reversals 52 — 52 Payments (67) (1) (68) Foreign currency translation and other 2 — 2 Balance as of December 31, 2020 $ 51 $ 2 $ 53 Expense, net of reversals 20 — 20 Payments (40) (1) (41) Foreign currency translation and other (1) (1) (2) Balance as of December 31, 2021 $ 30 $ — $ 30 The reversals were due to changes in estimates primarily resulting from the redeployment of staff and higher than expected voluntary terminations. Restructuring costs are not allocated to the Company’s reportable segments as they are not part of the segment performance measures regularly reviewed by management. The Company expects the majority of the restructuring accruals as of December 31, 2021 will be paid in 2022.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The components of income before income taxes and equity in earnings (losses) of unconsolidated affiliates are as follows: Year Ended December 31, (in millions) 2021 2020 2019 Domestic $ (73) $ (649) $ (504) Foreign 1,201 1,022 856 $ 1,128 $ 373 $ 352 The components of income tax expense attributable to continuing operations are as follows: Year Ended December 31, (in millions) 2021 2020 2019 Current expense: Federal and state $ 16 $ — $ 11 Foreign 293 244 248 309 244 259 Deferred (benefit) expense: Federal and state (106) (161) (109) Foreign (40) (11) (34) (146) (172) (143) $ 163 $ 72 $ 116 The differences between the Company’s consolidated income tax expense attributable to continuing operations and the expense computed at the United States statutory income tax rate of 21% were as follows: Year Ended December 31, (in millions) 2021 2020 2019 Federal income tax expense at statutory rate $ 237 $ 78 $ 74 State and local income taxes, net of federal effect 2 19 — Research and development (14) (14) (21) United States taxes recorded on foreign earnings(*) (29) 2 9 Tax contingencies 3 (5) 27 Foreign Derived Intangible Income (“FDII”) (34) (8) 20 Foreign rate differential 17 25 26 Equity compensation (23) (29) (14) Non-taxable gain on acquisition adjustment — 6 (5) Non-controlling interest — (5) (6) Other 4 3 6 $ 163 $ 72 $ 116 (*) Includes impact of GILTI, and other U.S. taxes on foreign earnings. In 2021, the Company recorded a benefit of $29 million related to a 2020 U.S. Federal tax return position associated with Foreign Derived Intangible Income (“FDII”) and GILTI tax credits. Also in 2021, the Company recorded a $9 million tax expense as a result of the U.S. Treasury Department issuing final regulations on Foreign Tax Credits. In 2020, the U.S. Treasury Department issued final regulations regarding FDII and GILTI. The Company has determined it will elect the GILTI high tax exception as allowed by the final regulations and has amended its 2018 U.S. Federal consolidated income tax returns and plans to amend its 2019 U.S. Federal consolidated income tax returns resulting in a favorable impact of $26 million, which the Company recorded in 2020. In 2019 the U.S. Treasury Department issued final regulations on the transition tax and proposed regulations on FDII, which was introduced by the Tax Act enacted by the U.S. government on December 22, 2017. The Tax Act is comprehensive legislation that includes provisions that lower the federal corporate income tax rate from 35% to 21% beginning in 2018 and imposes a one-time transition tax on undistributed foreign earnings. The final regulations related to the transition tax did not have a material impact on the Company. As a result of the proposed FDII guidance, which was subsequently finalized in 2020, the Company reversed the tax benefit originally recorded in 2018 by recording a tax expense of $25 million for this impact in 2019. Undistributed earnings of the Company’s foreign subsidiaries amounted to approximately $4,260 million as of December 31, 2021. With the enactment of the Tax Act, the Company does not consider any of its foreign earnings as indefinitely reinvested. The income tax effects of temporary differences from continuing operations that give rise to significant portions of deferred income tax assets (liabilities) are presented below: December 31, (in millions) 2021 2020 Deferred income tax assets: Net operating loss and capital loss carryforwards $ 212 $ 231 Tax credit carryforwards 375 369 Accrued expenses and unearned income 59 54 Employee benefits 212 228 Lease liability 92 139 Foreign exchange on debt instruments — 143 U.S. interest expense limitation 62 75 Other 64 64 Total deferred income tax assets 1,076 1,303 Valuation allowance for deferred income tax assets (294) (306) Total deferred income tax assets (net of valuation allowance) 782 997 Deferred income tax liabilities: Amortization and depreciation (898) (1,038) Lease right-of-use assets (81) (133) Foreign exchange on debt instruments (36) — Other (53) (50) Total deferred income tax liabilities (1,068) (1,221) Net deferred income tax liabilities $ (286) $ (224) During 2021 the net deferred tax liabilities increased mainly due to foreign exchange revaluations of debt instruments offset by a decrease in deferred tax liabilities mainly due to amortization of intangibles related to the merger between Quintiles and IMS Health. The Company had federal, state and local, and foreign tax loss carryforwards and tax credits, the tax effect of which was $631 million as of December 31, 2021. Of this amount, $22 million has an indefinite carryforward period, and the remaining $609 million expires at various times beginning in 2022. Some of the federal losses are subject to limitations under the Internal Revenue Code, however, management expects these losses to be utilized during the carryforward periods. In 2021, the Company decreased its valuation allowance by $12 million to $294 million as of December 31, 2021 from $306 million as of December 31, 2020. The valuation allowance decreased primarily due to current year state tax expenses on foreign exchange revaluations on debt instruments and in use of U.S. state net operating losses. The valuation allowance increased primarily due to branch basket foreign tax credits that the Company has determined are not more likely than not to be used before their expiration. A reconciliation of the beginning and ending amount of gross unrecognized income tax benefits is presented below: Year Ended December 31, (in millions) 2021 2020 2019 Balance as of January 1, $ 118 $ 120 $ 94 Additions based on tax positions related to the current year 7 5 5 Additions for income tax positions of prior years 16 15 33 Impact of changes in exchange rates (3) 3 — Settlements with tax authorities (2) (2) (1) Reductions for income tax positions of prior years (11) (16) (6) Reductions due to the lapse of the applicable statute of limitations (9) (7) (5) Balance as of December 31, $ 116 $ 118 $ 120 As of December 31, 2021, the Company had total gross unrecognized income tax benefits of $116 million associated with over 100 jurisdictions in which the Company conducts business that, if recognized, would reduce the Company’s effective income tax rate. The Company’s policy for recording interest and penalties relating to uncertain income tax positions is to record them as a component of income tax expense in the accompanying consolidated statements of income. In 2021, 2020 and 2019, the amount of interest and penalties recorded as an addition to income tax expense in the accompanying consolidated statements of income was $0 million, $3 million and $2 million, respectively. As of December 31, 2021, and 2020, the Company had accrued approximately $19 million and $21 million, respectively, of interest and penalties. The Company believes that it is reasonably possible that a decrease of up to $22 million in gross unrecognized income tax benefits for federal, state and foreign exposure items may be necessary within the next 12 months due to lapse of statutes of limitations or uncertain tax positions being effectively settled. The Company believes that it is reasonably possible that a decrease of up to $21 million in gross unrecognized income tax benefits for foreign items may be necessary within the next 12 months due to payments. For the remaining uncertain income tax positions, it is difficult at this time to estimate the timing of the resolution. The Company conducts business globally and, as a result, files income tax returns in the United States federal jurisdiction and various state and foreign jurisdictions. In the normal course of business, the Company is subject to examination by taxing authorities throughout the world. The following table summarizes the tax years that remain open for examination by tax authorities in the most significant jurisdictions in which the Company operates: United States 2017-2020 India 2006-2021 Japan 2019-2020 United Kingdom 2019-2020 Switzerland 2016-2020 In certain of the jurisdictions noted above, the Company operates through more than one legal entity, each of which has different open years subject to examination. The table above presents the open years subject to examination for the most material of the legal entities in each jurisdiction. Additionally, it is important to note that tax years are technically not closed until the statute of limitations in each jurisdiction expires. In the jurisdictions noted above, the statute of limitations can extend beyond the open years subject to examination. Due to the geographic breadth of the Company’s operations, numerous tax audits may be ongoing throughout the world at any point in time. Income tax liabilities are recorded based on estimates of additional income taxes that may be due upon the conclusion of these audits. Estimates of these income tax liabilities are made based upon prior experience and are updated in light of changes in facts and circumstances. However, due to the uncertain and complex application of income tax regulations, it is possible that the ultimate resolution of audits may result in liabilities that could be materially different from these estimates. In such an event, the Company will record additional income tax expense or income tax benefit in the period in which such resolution occurs.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2021
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans Pension and Postretirement Benefit Plans The Company sponsors both funded and unfunded defined benefit pension plans. These plans provide benefits based on various criteria, including, but not limited to, years of service and salary. The Company also sponsors an unfunded postretirement benefit plan in the United States that provides health and prescription drug benefits to retirees who meet the eligibility requirements. The Company uses a December 31 measurement date for all pension and postretirement benefit plans. The following table summarizes changes in the benefit obligation, the plan assets and the funded status of the pension benefit plans: Pension Benefits United States Plans Non-United States Plans December 31, (in millions) 2021 2020 2021 2020 Obligation and funded status: Change in benefit obligation: Projected benefit obligation at beginning of year $ 481 $ 401 $ 693 $ 591 Service costs 14 13 29 29 Interest cost 11 12 6 8 Actuarial losses (7) 65 (25) 60 Business combinations — — 4 — Benefits paid (11) (10) (23) (18) Contributions — — 2 2 Amendments — — (2) (1) Settlements — — (7) (7) Foreign currency fluctuations and other — — (25) 29 Projected benefit obligation at end of year 488 481 652 693 Change in plan assets: Fair value of plan assets at beginning of year 455 401 475 418 Actual return on plan assets 76 61 26 38 Contributions 4 3 26 27 Benefits paid (11) (10) (23) (18) Settlements — — (7) (7) Business combinations — — 3 — Foreign currency fluctuations and other — — (6) 17 Fair value of plan assets at end of year 524 455 494 475 Funded status $ 36 $ (26) $ (158) $ (218) The following table summarizes the amounts recognized in the consolidated balance sheets related to the pension benefit plans: Pension Benefits United States Plans Non-United States Plans December 31, (in millions) 2021 2020 2021 2020 Deposits and other assets $ 83 $ 23 $ 39 $ 7 Accrued expenses $ 3 $ 2 $ 10 $ 15 Other liabilities $ 44 $ 47 $ 187 $ 210 AOCI $ 29 $ (21) $ (24) $ (65) As of December 31, 2021, the benefit obligation and amount recognized in AOCI for other postretirement benefits were immaterial. The following table summarizes the accumulated benefit obligation for all pension benefit plans: Pension Benefits United States Plans Non-United States Plans December 31, (in millions) 2021 2020 2021 2020 Accumulated benefit obligation $ 482 $ 474 $ 608 $ 654 The following table provides the information for pension plans with an accumulated benefit obligation in excess of plan assets and projected benefit obligations in excess of plan assets: Pension Benefits United States Plans Non-United States Plans December 31 (in millions) 2021 2020 2021 2020 Plans with accumulated benefit obligation in excess of plan assets: Accumulated benefit obligation $ 50 $ 52 $ 222 $ 572 Fair value of plan assets $ 5 $ 5 $ 67 $ 384 Plans with projected benefit obligation in excess of plan assets: Projected benefit obligation $ 52 $ 53 $ 282 $ 610 Fair value of plan assets $ 5 $ 5 $ 85 $ 386 The components of net periodic benefit cost changes in plan assets and benefit obligations recognized in other comprehensive income were as follows: Pension Benefits United States Plans Non-United States Plans Year Ended December 31, (in millions) 2021 2020 2019 2021 2020 2019 Service cost $ 14 $ 13 $ 12 $ 29 $ 29 $ 25 Interest cost 11 12 14 6 8 9 Expected return on plan assets (32) (30) (25) (20) (18) (16) Amortization of actuarial losses — — — 1 1 — Curtailment gain — — — — — (5) Settlement gain — — — 1 — — Net periodic benefit cost (7) (5) 1 17 20 13 Other changes in plan assets and benefit obligations recognized in other comprehensive loss: Actuarial (gain) loss – current years (50) 34 (2) (39) 35 32 Prior service cost - current year — — — (2) — — Curtailment gain - current year — — — — — 5 Total recognized in other comprehensive income (50) 34 (2) (41) 35 37 Total recognized in net periodic benefit cost and other comprehensive income $ (57) $ 29 $ (1) $ (24) $ 55 $ 50 All components of net periodic benefit cost other than service cost are recorded in other income, net on the accompanying consolidated statements of income. Gain (losses) affecting the benefit obligation for the period ending December 31, 2021 was primarily related to the change in discount rate . Assumptions The weighted average assumptions used to determine net periodic benefit cost were as follows for the years ended December 31: Pension Benefits United States Plans Non-United States Plans 2021 2020 2019 2021 2020 2019 Discount rate 2.84 % 3.52 % 4.42 % 1.00 % 1.45 % 1.99 % Rate of compensation increases 3.00 % 3.00 % 3.00 % 2.55 % 2.78 % 4.54 % Expected return on plan assets 7.23 % 7.42 % 7.67 % 3.92 % 3.91 % 4.02 % The weighted average assumptions used to determine benefit obligations were as follows as of December 31: Pension Benefits United States Plans Non-United States Plans 2021 2020 2021 2020 Discount rate 3.08 % 2.84 % 1.42 % 1.02 % Rate of compensation increases 3.00 % 3.00 % 2.57 % 2.55 % The discount rate represents the interest rate used to determine the present value of the future cash flows currently expected to be required to settle the Company’s defined benefit plan obligations. The discount rates are derived using weighted average yield curves on AA-rated corporate bonds. The cash flows from the Company’s expected benefit obligation payments are then matched to the yield curve to derive the discount rates. The Company’s assumption for the expected return on plan assets was determined by the weighted average of the long-term expected rate of return on each of the asset classes invested as of the balance sheet date. For plan assets invested in government bonds, the expected return was based on the yields on the relevant indices as of the balance sheet date. There is considerable uncertainty for the expected return on plan assets invested in equity and diversified growth funds. Under the Company’s United States qualified retirement plan, participants have a notional retirement account that increases with pay and investment credits. The rate used to determine the investment credit (cash balance crediting rate) varies monthly and is equal to 1/12th of the yield on 30-year U.S. Government Treasury Bonds, with a minimum of 0.25%. At retirement, the account is converted to a monthly retirement benefit. As of December 31, 2021, the Company’s health care cost trend rate for the next seven years was assumed to be 7.0% and the assumed ultimate cost trend rate was 4.5%. The Company assumed that ultimate cost trend rate is reached in 2027. Assumed health care cost trend rates could have a significant effect on the amounts reported for the health care plans. A one-percentage- point change in assumed health care cost trend rates as of December 31, 2021 would have a de minimis effect on the total of service and interest cost and on the accumulated postretirement benefit obligation. Plan Assets The Company’s pension plan target asset allocations and weighted average asset allocations, by asset category, were as follows: Plan Assets as of December 31, Target United States Plans Non-United States Plans Total Asset Category Allocation 2021 2020 2021 2020 2021 2020 Equity securities 45-65% 71.13 % 71.15 % 41.29 % 42.69 % 56.65 % 56.62 % Debt securities 10-30% 23.72 23.88 24.36 20.08 24.03 21.94 Real estate 0-5% 5.15 4.97 — — 2.65 2.43 Other 10-30% — — 34.35 37.23 16.67 19.02 Total 100.00 % 100.00 % 100.00 % 100.00 % 100.00 % 100.00 % The following table summarizes United States plan assets measured at fair value: December 31, 2021 December 31, 2020 Asset Category Level 1 Level 2 Total Level 1 Level 2 Total (in millions) Domestic equities $ 34 $ — $ 34 $ 29 $ — $ 29 International equities 10 — 10 9 — 9 Corporate bonds 75 — 75 65 — 65 Real estate 27 — 27 23 — 23 Total assets in the fair value hierarchy 146 — 146 126 — 126 Common/collective trusts measured at net asset value (“NAV”)(1) — — 378 — — 329 Total $ 146 $ — $ 524 $ 126 $ — $ 455 The following table summarizes non-United States plan assets measured at fair value: December 31, 2021 December 31, 2020 Asset Category Level 1 Level 2 Total Level 1 Level 2 Total (in millions) International equities $ 1 $ 56 $ 57 $ 3 $ 66 $ 69 Debt issued by national, state or local government 3 118 121 3 93 96 Investments funds — 10 10 — 10 10 Insurance contracts — 160 160 — 171 171 Other 3 7 10 — 6 6 Total assets in the fair value hierarchy 7 351 358 6 346 352 Assets measured at NAV(1) — — 136 — — 123 Total $ 7 $ 351 $ 494 $ 6 $ 346 $ 475 (1) Certain investments that are measured at fair value using the net asset value (NAV) per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in the above plan asset tables are intended to permit reconciliation of the fair value of plan assets in the fair value hierarchy to the plan asset amounts presented in the above funded status table as of December 31, 2021 and 2020. Investments in mutual funds are valued at quoted market prices. Investments in common/collective trusts and pooled funds are valued at the NAV as reported by the trust. The NAV is based on the fair value of the underlying investments held by the fund less its liabilities. Insurance contracts are valued at the amount of the benefit liability. The Company has no Level 3 assets that rely on unobservable inputs to measure fair value. Investment Policies and Strategies The Company invests primarily in a diversified portfolio of equity securities that provide for long-term growth within reasonable and prudent levels of risk. The asset allocation targets established by the Company are strategic and applicable to the plan’s long-term investing horizon. The portfolio is constructed and maintained to provide adequate liquidity to meet associated liabilities and minimize long-term expense and provide prudent diversification among asset classes in accordance with the principles of modern portfolio theory. The plan employs a diversified mix of actively managed investments around a core of passively managed index exposures in each asset class. Within each asset class, rapid market shifts, changes in economic conditions or an individual fund manager’s outlook may cause the asset allocation to fall outside the prescribed targets. The majority of the Company’s plan assets are measured quarterly against benchmarks established by the Company’s investment advisors and the Company’s Asset Management Committee, who review actual plan performance and have the authority to recommend changes as deemed appropriate. Assets are rebalanced periodically to their strategic targets to maintain the plan’s strategic risk/reward characteristics. The Company periodically conducts asset liability modeling studies to ensure that the investment strategy is aligned with the obligations of the plans and that the assets will generate income and capital growth to meet the cost of current and future benefits that the plans provide. The pension plans do not have investments in Company stock as of December 31, 2021 and 2020. The portfolio for the Company’s United Kingdom pension plans seek to invest in a range of suitable assets of appropriate liquidity that will generate in the most effective manner possible, income and capital growth to ensure that there are sufficient assets to meet benefit payments when they fall due, while controlling the long-term costs of the plans and avoiding short-term volatility of investment returns. The plans seek to achieve these objectives by investing in a mixture of real (equities) and monetary (fixed interest) assets. It recognizes that the returns on real assets, while expected to be greater over the long-term than those on monetary assets, are likely to be more volatile. A mixture across asset classes should nevertheless provide the level of returns required by the plans. The trustee periodically conducts asset liability modeling exercises to ensure the investments are aligned with the appropriate benchmark to better reflect the plans’ liabilities. The trustee also undertakes to review this benchmark on a regular basis. Cash Flows Contributions The Company expects to contribute approximately $33 million in required contributions to its pension and postretirement benefit plans during 2022. The Company may make additional contributions into its pension plans in 2022 depending on, among other factors, how the funded status of those plans change or in order to meet minimum funding requirements as set forth in employee benefit and tax laws, plus additional amounts the Company may deem to be appropriate. Estimated future benefit payments and subsidy receipts The following benefit payments (net of expected participant contributions) for pension benefits are expected to be paid as follows: (in millions) 2022 $ 44 2023 44 2024 47 2025 49 2026 54 Years 2027 through 2031 283 $ 521 Benefit payments (net of expected participant contributions) for other postretirement benefits are expected to be de minimis over the periods presented. Defined Contribution Plans Defined contribution or profit sharing plans are offered in various countries in which the Company operates. In some cases, these plans are required by local laws or regulations. In the United States, the Company has a 401(k) plan under which the Company matches employee deferrals at varying percentages and specified limits of the employee’s salary. In 2021, 2020, and 2019, the Company expensed $60 million, $48 million and $56 million, respectively, related to matching contributions. Certain key executives of the Company participate in an unfunded defined contribution executive retirement plan, assumed in the merger between Quintiles and IMS Health, which was frozen to additional accruals for future service contributions in 2012. Participants continue to receive an annual investment credit based on the average of the annual yields at the end of each month on the AA-AAA rated 10 plus year maturity component of the Merrill Lynch United States Corporate Bond Master Index. Plans Accounted for as Postretirement Benefits The Company provides certain executives with postretirement medical, dental and life insurance benefits. These benefits are individually negotiated arrangements in accordance with their individual employment arrangements. The above tables do not include the Company’s expense or obligation associated with providing these benefits. The obligation related to these benefits as of December 31, 2021, and the Company’s expense for the year then ended, were not material. Stock Incentive Plans Stock incentive plans provide incentives to eligible employees, officers and directors in the form of non-qualified stock options, incentive stock options, stock appreciation rights (“SARs”), restricted stock awards (“RSAs”), restricted stock units (“RSUs”), performance awards, covered annual incentive awards, cash-based awards and other stock-based awards, in each case subject to the terms of the stock incentive plans. In April 2017, the Company’s 2017 Incentive and Stock Award Plan (the “2017 Plan”) was approved by the Company’s stockholders. The 2017 Plan consolidates the unused share pools under the Company’s 2014 Incentive and Stock Award Plan (the “2014 Plan”), the Company’s 2013 Stock Incentive Plan (the “2013 Plan”), the Company’s 2010 Equity Incentive Plan (the “2010 Plan”) and the Company’s 2008 Stock Incentive Plan (the “2008 Plan”), and together with the 2010 Plan, the 2013 Plan and the 2014 Plan (the “Prior Plans”), makes shares underlying outstanding awards granted under (but not ultimately delivered) the Prior Plans eligible for use in connection with new awards under the 2017 Plan. The 2017 Plan provides for the grant of stock options, SARs, restricted and deferred stock (including RSUs), performance awards, dividend equivalents, other stock-based awards and cash-based awards. The Company recognized stock-based compensation expense of $170 million, $95 million and $146 million in 2021, 2020, and 2019, respectively. Stock-based compensation expense is included in selling, general and administrative expenses on the accompanying consolidated statements of income. The associated future income tax benefit recognized was $26 million, $14 million and $22 million in 2021, 2020, and 2019, respectively. As of December 31, 2021, there was approximately $149 million of total unrecognized stock-based compensation expense related to outstanding non-vested stock-based compensation arrangements, which the Company expects to recognize over a weighted average period of 0.97 years. As of December 31, 2021, there were 10.0 million shares available for future grants under all of the Company’s stock incentive plans. The Company used the following assumptions when estimating the value of the stock-based compensation for stock options and SARs issued as follows: Year Ended December 31, 2021 2020 2019 Expected volatility 27 – 31% 23 – 31% 23 – 24% Weighted average expected volatility 29% 23% 23% Expected dividends 0.0% 0.0% 0.0% Expected term (in years) 3.6 – 6.6 3.2 – 6.2 3.7 – 6.7 Risk-free interest rate 0.28 – 1.40% 0.17 –1.41% 1.55 – 2.56% Stock Options The option price is determined by the Board at the date of grant and the options expire 10 years from the date of grant. All outstanding stock options are fully vested. The Company’s stock option activity in 2021 is as follows: (in millions, except number of options and exercise price) Number of Options Weighted Average Exercise Price Aggregate Intrinsic Value Outstanding as of December 31, 2020 532,627 $ 48.42 $ 70 Exercised (160,966) 40.88 Outstanding as of December 31, 2021 371,661 $ 51.69 $ 86 The total intrinsic value of options exercised was approximately $29 million, $120 million and $124 million in 2021, 2020 and 2019, respectively. The Company received cash of approximately $7 million, $25 million and $36 million in 2021, 2020, and 2019, respectively, from options exercised. The weighted average remaining contractual life of the options outstanding and exercisable as of December 31, 2021 is 2.7 years. The total aggregate intrinsic value of the exercisable stock options as of December 31, 2021 was approximately $86 million. Stock Appreciation Rights – Stock Settled The exercise price of the stock-settled SARs (“SSRs”) is equal to the closing market price of the Company’s common stock as of the grant date and expire on the tenth anniversary of the date of grant. The SSRs are eligible to vest in three equal annual installments on each of the first three anniversaries of the date of grant. The Company’s SSR activity in 2021 is as follows: (in millions, except number of SSRs and exercise price) Number of SSRs Weighted Average Exercise Price Aggregate Intrinsic Value Outstanding as of December 31, 2020 4,241,342 $ 112.66 $ 282 Granted 494,929 184.96 Exercised (695,195) 103.06 Canceled (86,183) 152.10 Outstanding as of December 31, 2021 3,954,893 $ 122.54 $ 632 The total intrinsic value of SSRs exercised was approximately $81 million, $73 million and $47 million in 2021, 2020 and 2019, respectively. The weighted average remaining contractual life of the SSRs outstanding and exercisable as of December 31, 2021 is 6.7 years and 5.8 years, respectively. The total aggregate intrinsic value of the exercisable SSRs and the SSRs expected to vest as of December 31, 2021 was approximately $625 million. Performance Awards The Company awarded performance awards that contain service, performance-based and/or market-based vesting criteria. Vesting occurs if the recipient remains employed and depends on the degree to which performance goals are achieved during the three-year performance period (as defined in the award agreements). The Company’s performance award activity in 2021 is as follows: Number of Performance Awards Weighted Average Grant-Date Fair Value Outstanding as of December 31, 2020 786,165 $ 136.96 Granted 248,019 202.66 Additional goal achievement shares 303,128 104.29 Vested (631,215) 103.96 Canceled (35,937) 168.49 Outstanding as of December 31, 2021 670,160 $ 175.89 As of December 31, 2021, there are 670,160 performance awards outstanding with an intrinsic value of approximately $189 million. Restricted Stock Units – Stock Settled The Company’s RSUs will settle in shares of the Company’s common stock within 45 days of the applicable vesting date. In general, RSUs granted to employees vest either (i) one-third per year beginning on the first anniversary of the grant date; (ii) 50% on the second anniversary of the date of grant and 25% on the third and fourth anniversary of the date of grant or (iii) 100% at the end of the three-year period following the grant date. Members of the Company’s board of directors receive RSUs that are fully vested when granted. The Company’s RSU activity in 2021 is as follows: Number of RSUs Weighted Average Grant-Date Outstanding as of December 31, 2020 573,090 $ 143.23 Granted (1) 536,199 196.91 Vested (214,084) 128.85 Canceled (74,419) 170.29 Outstanding as of December 31, 2021 820,786 $ 179.59 (1) Pursuant to the IQVIA Holdings Inc. Non-Employee Director Deferral Plan (the “Director Deferral Plan”), non-employee directors may elect to defer receipt of their cash retainers. If a director elects to defer his or her retainer, he or she will instead be credited with that value in deferred shares under the Director Deferral Plan. Deferred shares become payable in Company common stock following a termination of the director’s Board service or the director’s death, or upon a change in control of the Company. The Company granted 1,017 deferred RSUs in 2021. As of December 31, 2021, there are 820,786 RSUs outstanding with an intrinsic value of approximately $232 million. Stock Appreciation Rights – Cash Settled The Company’s cash settled SARs (“CSRs”) require the Company to settle in cash an amount equal to the difference between the fair value of the Company’s common stock on the date of exercise and the grant price, multiplied by the number of CSRs being exercised. These awards vest one- third per year beginning on the first anniversary of the date of grant. As of December 31, 2021, 2020 and 2019, the weighted average fair value per share of the CSRs granted was $216.87, $112.10 and $99.27, respectively. The Company paid approximately $1 million, $4 million and $7 million to settle exercised CSRs in 2021, 2020, and 2019, respectively. The weighted average remaining contractual life of the CSRs outstanding and exercisable as of December 31, 2021 is 3.5 years and 3.1 years, respectively. The total aggregate intrinsic value of the exercisable CSRs and the CSRs expected to vest as of December 31, 2021 was approximately $28 million. Restricted Stock Units – Cash Settled The Company’s cash settled RSUs (“Cash RSUs”) require the Company to settle in cash an amount equal to the fair value of the Company’s common stock on the vest date multiplied by the number of vested Cash RSUs. These awards vest either (i) 100% at the end of the three-year period following the date of grant, or (ii) one-third per year beginning on the first grant date anniversary. As of December 31, 2021, there are 12,319 Cash RSUs outstanding with an intrinsic value of approximately $3.5 million. Restricted Stock Awards Restricted stock awards (“RSAs”) vest 25% on each of the second and third anniversaries of the grant date and 50% on the fourth anniversary of the date of grant. As of December 31, 2021, there are no RSAs outstanding. Other The Company sponsors a supplemental non-qualified deferred compensation plan, covering certain management employees, and maintains other statutory indemnity plans as required by local laws or regulations.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Related Party TransactionsThe Company has entered into transactions with related parties that are not deemed to be material, including investments in unconsolidated affiliates that are discussed in Note 4.

Property, Equipment and Softwar

Property, Equipment and Software by Geography	12 Months Ended
	Dec. 31, 2021
Property Equipment And Software By Geography [Abstract]
Property, Equipment and Software by Geography	Property, Equipment and Software by Geography The following table represents the Company’s property, equipment and software, net, by geographic region, which is further broken down to show each country that accounts for 10% or more of the totals: December 31, (in millions) 2021 2020 Property, equipment and software, net: Americas: United States $ 1,573 $ 1,379 Other 69 66 Americas 1,642 1,445 Europe and Africa 218 161 Asia-Pacific 61 70 Total property, equipment and software, net $ 1,921 $ 1,676

Segments

Segments	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Segments	Segments The following table presents the Company’s operations by reportable segment. The Company is managed through three reportable segments, Technology & Analytics Solutions, Research & Development Solutions and Contract Sales & Medical Solutions. Technology & Analytics Solutions provides mission critical information, technology solutions and real-world insights and services to the Company’s life science clients. Research & Development Solutions, which primarily serves biopharmaceutical customers, provides outsourced clinical research and clinical trial related services. Contract Sales & Medical Solutions provides health care provider (including contract sales) and patient engagement services to both biopharmaceutical customers and the broader healthcare market. Certain costs are not allocated to our segments and are reported as general corporate and unallocated expenses. These costs primarily consist of stock-based compensation and expenses related to integration activities and acquisitions. The Company also does not allocate depreciation and amortization or impairment charges to its segments. Asset information by segment is not presented, as this measure is not used by the chief operating decision maker to assess the Company’s performance. The Company’s reportable segment information is presented below: Year Ended December 31, (in millions) 2021 2020 2019 Revenues Technology & Analytics Solutions $ 5,534 $ 4,858 $ 4,486 Research & Development Solutions 7,556 5,760 5,788 Contract Sales & Medical Solutions 784 741 814 Total revenues 13,874 11,359 11,088 Costs of revenue, exclusive of depreciation and amortization Technology & Analytics Solutions 3,278 2,900 2,663 Research & Development Solutions 5,303 3,974 3,936 Contract Sales & Medical Solutions 652 626 701 Total costs of revenue 9,233 7,500 7,300 Selling, general and administrative expenses Technology & Analytics Solutions 798 742 722 Research & Development Solutions 777 738 711 Contract Sales & Medical Solutions 57 58 61 General corporate and unallocated 332 251 240 Total selling, general and administrative expenses 1,964 1,789 1,734 Segment profit Technology & Analytics Solutions 1,458 1,216 1,101 Research & Development Solutions 1,476 1,048 1,141 Contract Sales & Medical Solutions 75 57 52 Total segment profit 3,009 2,321 2,294 General corporate and unallocated (332) (251) (240) Depreciation and amortization (1,264) (1,287) (1,202) Restructuring costs (20) (52) (75) Total income from operations $ 1,393 $ 731 $ 777

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The following table reconciles the basic to diluted weighted average shares outstanding: Year Ended December 31, (in millions, except per share data) 2021 2020 2019 Numerator: Net income attributable to IQVIA Holdings Inc. $ 966 $ 279 191 Denominator: Basic weighted average common shares outstanding 191.4 191.3 195.1 Effect of dilutive stock options and share awards 3.6 3.7 4.5 Diluted weighted average common shares outstanding 195.0 195.0 199.6 Earnings per share attributable to common stockholders: Basic $ 5.05 $ 1.46 $ 0.98 Diluted $ 4.95 $ 1.43 $ 0.96 Stock-based awards will have a dilutive effect under the treasury method when the respective period’s average market value of the Company’s common stock exceeds the exercise proceeds. Performance awards are included in diluted earnings per share based on if the performance targets have been met at the end of the reporting period.

Accumulated Other Comprehensive

Accumulated Other Comprehensive (Loss) Income	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Accumulated Other Comprehensive (Loss) Income	Accumulated Other Comprehensive (Loss) Income Below is a summary of the components of AOCI: (in millions) Foreign Currency Translation Derivative Instrument Defined Benefit Plans Income Taxes Total Balance as of December 31, 2018 $ (419) $ (1) $ 19 $ 177 $ (224) Other comprehensive loss before reclassifications (11) (19) (35) (21) (86) Reclassification adjustments — (1) — — (1) Balance as of December 31, 2019 (430) (21) (16) 156 (311) Other comprehensive income (loss) before reclassifications 35 (40) (69) 170 96 Reclassification adjustments — 13 — (3) 10 Balance as of December 31, 2020 (395) (48) (85) 323 (205) Other comprehensive (loss) income before reclassifications (165) 11 90 (139) (203) Reclassification adjustments — 16 — (4) 12 Acquisition of Quest's non-controlling interest (10) — — — (10) Balance as of December 31, 2021 $ (570) $ (21) $ 5 $ 180 $ (406) Below is a summary of the effects on net income of amounts reclassified from AOCI into the consolidated statements of income and the affected financial statement line item: Year Ended December 31, (in millions) Affected Financial Statement Line Item 2021 2020 2019 Derivative instruments: Interest rate swaps Interest expense $ (21) $ (13) $ — Foreign exchange forward contracts Revenues 5 1 (5) Foreign exchange forward contracts Other income, net — (1) 6 Total before income taxes (16) (13) 1 Income taxes (4) (3) — Total net of income taxes $ (12) $ (10) $ 1

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	12 Months Ended
	Dec. 31, 2021
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information The following table presents the Company’s supplemental cash flow information: Year Ended December 31, (in millions) 2021 2020 2019 Supplemental Cash Flow Information: Interest paid $ 343 $ 399 $ 421 Income taxes paid, net of refunds $ 222 $ 209 $ 215

Schedule I - Condensed Financia

Schedule I - Condensed Financial Information of Registrant	12 Months Ended
	Dec. 31, 2021
Condensed Financial Information Disclosure [Abstract]
Schedule I-Condensed Financial Information of Registrant	(2) Financial Statement Schedules Schedule I—Condensed Financial Information of Registrant IQVIA HOLDINGS INC. (PARENT COMPANY ONLY) CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME Year Ended December 31, (in millions) 2021 2020 2019 Equity in earnings of subsidiary, net of tax $ 966 $ 279 $ 191 Net income 966 279 191 Equity in other comprehensive (loss) income of subsidiary, net of tax (191) 106 (87) Comprehensive income $ 775 $ 385 $ 104 IQVIA HOLDINGS INC. (PARENT COMPANY ONLY) CONDENSED BALANCE SHEETS December 31, (in millions, except per share data) 2021 2020 ASSETS Current assets: Cash and cash equivalents $ 2 $ 1 Total current assets 2 1 Investment in subsidiary 9,667 9,666 Total assets $ 9,669 $ 9,667 LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities: Investment in subsidiary $ 3,625 $ 3,664 Payable to subsidiary 2 2 Total liabilities 3,627 3,666 Commitments and contingencies Stockholders’ equity: Common stock and additional paid-in capital, 400.0 shares authorized as of December 31, 2021 and 2020, $0.01 par value, 255.8 shares issued and 190.6 shares outstanding as of December 31, 2021; 254.7 shares issued and 191.2 shares outstanding as of December 31, 2020 10,777 11,095 Retained earnings 2,243 1,277 Treasury stock, at cost, 65.2 and 63.5 shares as of December 31, 2021 and 2020, respectively (6,572) (6,166) Accumulated other comprehensive loss (406) (205) Total stockholders’ equity 6,042 6,001 Total liabilities and stockholders’ equity $ 9,669 $ 9,667 IQVIA HOLDINGS INC. (PARENT COMPANY ONLY) CONDENSED STATEMENTS OF CASH FLOWS Year Ended December 31, (in millions) 2021 2020 2019 Operating activities: Net Income $ 966 $ 279 $ 191 Adjustments to reconcile net income to cash provided by operating activities: Equity in earnings of subsidiary (966) (279) (191) Change in operating assets and liabilities: Other operating assets and liabilities (1) — — Net cash (used in) provided by operating activities (1) — — Investing activities: Investment in subsidiary, net of dividends received 467 477 951 Net cash provided by investing activities 467 477 951 Financing activities: (Payments) proceeds related to employee stock option plans (59) (44) 11 Repurchase of common stock (406) (434) (963) Intercompany with subsidiary — (1) 3 Net cash used in financing activities (465) (479) (949) Increase (decrease) in cash and cash equivalents 1 (2) 2 Cash and cash equivalents at beginning of period 1 3 1 Cash and cash equivalents at end of period $ 2 $ 1 $ 3 IQVIA HOLDINGS INC. (PARENT COMPANY ONLY) NOTES TO CONDENSED FINANCIAL INFORMATION The condensed parent company financial statements have been prepared in accordance with Rule 12-04, Schedule I of Regulation S-X as the restricted net assets of IQVIA Holdings Inc.’s (the “Company”) wholly-owned subsidiary, IQVIA Incorporated exceed 25% of the consolidated net assets of the Company. These condensed parent company financial statements are not the general-purpose financial statement of the reporting entity. The ability of IQVIA Incorporated to pay dividends may be limited due to the restrictive covenants in the agreements governing its credit arrangements. These condensed parent company financial statements include the accounts of IQVIA Holdings Inc. on a standalone basis (the “Parent”) and the equity method of accounting is used to reflect ownership interest in its subsidiary. Refer to the consolidated financial statements and notes presented elsewhere herein for additional information and disclosures with respect to these financial statements. The 2019 statement of cash flow presentation has been revised to conform with current period presentation. Below is a summary of the dividends paid to the Parent by IQVIA Incorporated in 2021, 2020 and 2019: (in millions) Amount Paid in December 2021 $ 57 Paid in November 2021 89 Paid in October 2021 60 Paid in September 2021 36 Paid in August 2021 35 Paid in July 2021 25 Paid in June 2021 20 Paid in May 2021 23 Paid in April 2021 4 Paid in March 2021 51 Paid in February 2021 70 Total paid in 2021 $ 470 Paid in December 2020 $ 81 Paid in October 2020 20 Paid in July 2020 2 Paid in March 2020 44 Paid in February 2020 333 Total paid in 2020 $ 480 Paid in December 2019 $ 13 Paid in November 2019 255 Paid in September 2019 74 Paid in August 2019 239 Paid in June 2019 94 Paid in May 2019 140 Paid in March 2019 141 Paid in February 2019 3 Total paid in 2019 $ 959

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II-Valuation and Qualifying Accounts	Schedule II—Valuation and Qualifying Accounts Deferred Tax Asset Valuation Allowance Additions (in millions) Balance at Beginning of Year Charged to Expenses Charged to Other Accounts(a) Additions (Deductions) (b) Balance at End of Year December 31, 2021 $ 306 $ 1 $ — $ (13) $ 294 December 31, 2020 $ 266 $ 40 $ — $ — $ 306 December 31, 2019 $ 226 $ 40 $ — $ — $ 266 (a) Recorded through purchase accounting transaction. (b) Impact of reductions recorded to expense and translation adjustments.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The accompanying consolidated financial statements include the accounts and operations of the Company, its subsidiaries and investments in which the Company has control. Amounts pertaining to the non-controlling ownership interests held by third parties in the operating results and financial position of the Company’s majority-owned subsidiaries are reported as non-controlling interests. Intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	Use of EstimatesThe preparation of financial statements in accordance with generally accepted accounting principles in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and the disclosure of contingent assets and liabilities, at the date of the financial statements, as well as the reported amounts of revenues and expenses during the period. These estimates are based on historical experience and various other assumptions believed reasonable under the circumstances. The Company evaluates its estimates on an ongoing basis and makes changes to the estimates and related disclosures as experience develops or new information becomes known. Actual results may differ from those estimates.
Foreign Currencies	Foreign Currencies The Company’s financial statements are reported in United States dollars and, accordingly, the Company’s results of operations are impacted by fluctuations in exchange rates that affect the translation of its revenues and expenses denominated in foreign currencies into United States dollars for purposes of reporting its consolidated financial results. Assets and liabilities recorded in foreign currencies on the books of foreign subsidiaries are translated at the exchange rate on the balance sheet date. Revenues, costs and expenses are translated at average rates of exchange during the year. Translation adjustments resulting from this process are charged or credited to the accumulated other comprehensive (loss) income (“AOCI”) component of stockholders’ equity. The Company is subject to foreign currency transaction risk for fluctuations in exchange rates during the period of time between the consummation and cash settlement of a transaction. The Company earns revenue from its service contracts over a period of several months and, in some cases, over a period of several years. Accordingly, exchange rate fluctuations during this period may affect the Company’s profitability with respect to such contracts. For operations outside the United States that are considered to be highly inflationary or where the United States dollar is designated as the functional currency, monetary assets and liabilities are remeasured using end-of-period exchange rates, whereas nonmonetary accounts are remeasured using historical exchange rates, and all remeasurement and transaction adjustments are recognized in other income, net.
Cash Equivalents	Cash Equivalents The Company considers all highly liquid investments with an initial maturity of three months or less when purchased to be cash equivalents.
Derivatives	Derivatives The Company uses derivative instruments to manage exposures to interest rates and foreign currencies. Derivatives are recorded on the balance sheet at fair value at each balance sheet date utilizing pricing models for non-exchange-traded contracts. At inception, the Company designates whether or not the derivative instrument is an effective hedge of an asset, liability or firm commitment which is then classified as either a cash flow hedge or a fair value hedge. If determined to be an effective cash flow hedge, changes in the fair value of the derivative instrument are recorded as a component of AOCI until realized. The Company includes the impact from these hedges in the same line item as the hedged item on the consolidated statements of cash flows. Changes in fair value of effective fair value hedges are recorded in earnings as an offset to the changes in the fair value of the related hedged item. Hedge ineffectiveness, if any, is immediately recognized in earnings. Changes in the fair values of derivative instruments that are not an effective hedge are recognized in earnings. When it is probable that a hedged forecasted transaction will not occur, the Company discontinues hedge accounting for the affected portion of the forecasted transaction and reclassifies gains or losses that were accumulated in AOCI to earnings for foreign exchange derivatives and interest expense for interest rate derivatives on the consolidated statements of income. Cash flows are classified consistent with the underlying hedged item. The Company has entered, and may in the future enter, into derivative contracts (caps, swaps, forwards, calls or puts, warrants, for example) related to its debt and forecasted foreign currency transactions.
Business Combinations	Business Combinations The Company uses the acquisition method to account for business combinations, and accordingly, the identifiable assets acquired, the liabilities assumed and any non-controlling interest in the acquiree are recorded at their estimated fair values on the date of the acquisition. The Company uses significant judgments, estimates and assumptions in determining the estimated fair value of assets acquired, liabilities assumed and non-controlling interest including expected future cash flows, and discount rates that reflect the risk associated with the expected future cash flows and estimated useful lives. The Company records and allocates to its reporting units the excess of the cost over the fair value of the net assets acquired, known as goodwill. The recoverability of the goodwill and indefinite-lived intangible assets are evaluated annually for impairment, or if and when events or circumstances indicate a possible impairment. The Company reviews the carrying values of other identifiable intangible assets if the facts and circumstances indicate a possible impairment.
Property and Equipment	Property and equipment are stated at cost and are depreciated using the straight-line method over the shorter of the asset’s estimated useful life or the lease term, if related to leased property, as follows: Buildings and leasehold improvements 3 - 40 years Equipment 3 - 10 years Furniture and fixtures 5 - 10 years Transportation equipment 3 - 20 years
Definite-lived Identifiable Intangible Assets	Definite-lived other identifiable intangible assets are amortized primarily using an accelerated method that reflects the pattern in which the Company expects to benefit from the use of the asset over its estimated remaining useful life as follows: Trademarks and trade names 1 - 17 years Contract backlog and client relationships 1 - 25 years Software and related assets 1 - 10 years Databases 1 - 9 years Non-compete agreements and other 2 - 5 years Included in software and related assets is the capitalized cost of internal-use software used in supporting the Company’s business. Qualifying costs incurred during the application development stage are capitalized and amortized over their estimated useful lives. Costs are capitalized from completion of the preliminary project stage and when it is considered probable that the software will be used to perform its intended function, up until the time the software is placed into service. The Company recognized $211 million, $267 million and $196 million of amortization expense in 2021, 2020 and 2019, respectively, related to software and related assets. The carrying values of property, equipment and intangible and other long-lived assets are reviewed for recoverability at the asset grouping level to determine if the facts and circumstances suggest that a potential impairment may have occurred. If this review indicates that carrying values will not be recoverable, as determined based on undiscounted cash flow projections, the Company will record an impairment charge to reduce carrying values to estimated fair value. There were no impairments recognized in 2021, 2020 and 2019.
Revenue Recognition	Revenue Recognition The Company’s arrangements are primarily service contracts that range in duration from a few months to several years. The Company recognizes revenue when control of these services is transferred to the customer for an amount, referred to as the transaction price, that reflects the consideration to which the Company is expected to be entitled in exchange for those goods or services. The Company determines revenue recognition utilizing the following five steps: (1) identification of the contract with a customer, (2) identification of the performance obligations in the contract (promised goods or services that are distinct), (3) determination of the transaction price, (4) allocation of the transaction price to the performance obligations, and (5) recognition of revenue when, or as, the Company transfers control of the product or service for each performance obligation. Cash payments made to customers as incentives to induce customers to enter into service agreements with the Company are amortized as a reduction of revenue over the period the services are performed. The Company records revenues net of any tax assessments by governmental authorities, such as value added taxes, that are imposed on and concurrent with specific revenue generating transactions. The Company derives the majority of its revenues in the Technology & Analytics Solutions segment from various information and technology service offerings. Information offerings (primarily under fixed-price contracts) typically include multiple performance obligations including an ongoing subscription-based deliverable for which revenue is recognized ratably as earned over the contract period, and/or a one-time deliverable of data offerings for which revenue is recognized upon delivery. The customer is able to benefit from the provision of data as it is received. The Company’s subscription arrangements typically have terms ranging from one The majority of the Company’s contracts within the Research & Development Solutions segment are service contracts for clinical research that represent a single performance obligation. The Company provides a significant integration service resulting in a combined output, which is clinical trial data that meets the relevant regulatory standards and can be used by the customer to progress to the next phase of a clinical trial or solicit approval of a treatment by the applicable regulatory body. The performance obligation is satisfied over time as the output is captured in data and documentation that is available for the customer to consume over the course of the arrangement and furthers progress of the clinical trial. The Company recognizes revenue over time using a cost-based input method since there is no single output measure that would fairly depict the transfer of control over the life of the performance obligation. Progress on the performance obligation is measured by the proportion of actual costs incurred to the total costs expected to complete the contract. Costs included in the measure of progress include direct labor and third-party costs (such as payments to investigators and other pass through expenses for the Company’s clinical monitors). This cost-based method of revenue recognition requires the Company to make estimates of costs to complete its projects on an ongoing basis. Significant judgment is required to evaluate assumptions related to these estimates. The effect of revisions to estimates related to the transaction price or costs to complete a project are recorded in the period in which the estimate is revised. Most contracts may be terminated upon 30 to 90 days notice by the customer; however, in the event of termination, most contracts require payment for services rendered through the date of termination, as well as for subsequent services rendered to close out the contract. The majority of revenue in our Contract Sales & Medical Solutions segment is from contract salesforce to the biopharmaceutical industry and broader healthcare market and recognized over time using a single measure of progress dependent on the performance obligation. Some of our Contract Sales & Medical Solutions contracts contain multiple performance obligations with distinct promises including recruiting, sales force automation and deployment of sales representatives. The Company utilizes a single measure of progress for each performance obligation to recognize revenue, which includes deployment of sales representatives based on employee days worked; recruiting based on candidates recruited; sales force automation set-up based on hours worked; and sales force automation hosting and maintenance based on usage. These services meet the over time criterion as the customer consumes the benefit as activities are performed and another party would not need to substantially re-perform the work already completed to satisfy the remaining obligations if the services were migrated to another party. Variable Consideration In some cases, contracts provide for variable consideration that is contingent upon the occurrence of uncertain future events, such as performance incentives (including royalty payments, bonuses, or penalty clauses that can either increase or decrease the transaction price). Variable consideration is estimated at the expected value or at the most likely amount depending on the type of consideration. Estimated amounts are included in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. The estimate of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on an assessment of the Company's anticipated performance and all information (historical, current and forecasted) that is reasonably available to the Company and reevaluated each reporting period. Reimbursed Expenses The Company includes reimbursed expenses in revenues and costs of revenue as the Company is primarily responsible for fulfilling the promise to provide the specified service, including the integration of the related services into a combined output to the customer, which are inseparable from the integrated service. These costs include such items as payments to investigators and travel expenses for the Company’s clinical monitors and sales representatives, over which the Company has discretion in establishing prices. The Company controls the good or service and has inventory risk on contractually reimbursable expenses, as sometimes the Company is unable to obtain reimbursement from the customer for costs incurred. Change Orders Changes in the scope of work are common, especially under long-term contracts, and generally result in a change in transaction price. Change orders are evaluated on a contract-by-contract basis to determine if they should be accounted for as a new contract or as part of the existing contract. Generally, services from change orders are not distinct from the original performance obligation. As a result, the effect that the contract modification has on the contract revenue, and measure of progress, is recognized as an adjustment to revenue when it occurs. Costs of Revenue Costs of revenue include (i) compensation and benefits for billable employees and personnel involved in production, data management and delivery, and the costs of acquiring and processing data for the Company’s information offerings; (ii) costs of staff directly involved with delivering technology-related services offerings and engagements, and the costs of data purchased specifically for technology services engagements; (iii) reimbursed expenses that are comprised principally of payments to investigators who oversee clinical trials and travel expenses for the Company’s clinical monitors and sales representatives; and (iv) other expenses directly related to service contracts such as courier fees, laboratory supplies, professional services and travel expenses. Trade Receivables, Unbilled Services and Unearned Income In general, billings and payments are established by contractual provisions including predetermined payment schedules, which may or may not correspond to the timing of the transfer of control of the Company’s services under the contract. In general, the Company’s intention in its invoicing (payment terms) is to maintain cash neutrality over the life of the contract. Generally, the payment terms are 30 to 90 days based on contracts. Upfront payments, when they occur, are intended to cover certain expenses the Company incurs at the beginning of the contract. Neither the Company nor its customers view such upfront payments and contracted payment schedules as a means of financing. Unbilled services primarily arise from long-term contracts when a cost-based or hours-based input method of revenue recognition is utilized and revenue recognized exceeds the amount billed to the customer. Unearned income consists of advance payments and billings in excess of revenue recognized. As the contracted services are subsequently performed and the associated revenue is recognized, the unearned income balance is reduced by the amount of the revenue recognized during the period. Unearned income is classified as a current liability on our consolidated balance sheet as the Company expects to recognize the associated revenue in less than one year.
Restructuring Costs	Restructuring Costs Restructuring costs, which primarily include termination benefits, are recorded at estimated value. Key assumptions in determining the restructuring costs include the terms and payments that may be negotiated to terminate certain contractual obligations and the timing of employees leaving the Company.
Debt Fees	Debt Fees Fees incurred to issue debt are generally deferred and amortized as a component of interest expense over the estimated term of the related debt using the effective interest rate method.
Contingencies	Contingencies The Company records accruals for claims, suits, investigations and proceedings when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. The Company reviews claims, suits, investigations and proceedings at least quarterly and records or adjusts accruals related to such matters to reflect the impact and status of any settlements, rulings, advice of counsel or other information pertinent to a particular matter. Legal costs associated with contingencies are charged to expense as incurred. The Company is party to legal proceedings incidental to its business. While the outcome of these matters could differ from management’s expectations, the Company does not believe the resolution of these matters will have a material adverse effect to the Company’s financial statements.
Income Taxes	Income Taxes The provision for income taxes includes federal, state, local and foreign taxes. Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the estimated future tax consequences of temporary differences between the financial statement carrying amounts and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which the temporary differences are expected to be recovered or settled. The Company records U.S. deferred taxes based on the Federal corporate income tax rate of 21%. The Company accounts for tax related to Global Intangible Low-Taxed Income (“GILTI”) as a period cost when incurred. Recognition of deferred income tax assets is based on management’s belief that it is more likely than not that the income tax benefit associated with certain temporary differences, income tax operating loss, capital loss carryforwards, and income tax credits, would be realized. The Company records a valuation allowance to reduce its deferred income tax assets for those deferred income tax items for which it was more likely than not that realization would not occur. The Company determines the amount of the valuation allowance based, in part, on the Company’s assessment of future taxable income and in light of the Company’s ongoing income tax strategies. If the estimate of future taxable income or tax strategies changes at any time in the future, the Company would record an adjustment to our valuation allowance. Recording such an adjustment could have a material effect on the Company’s financial condition or results of operations. Income tax expense is based on the distribution of profit before income tax among the various taxing jurisdictions in which we operate, adjusted as required by the income tax laws of each taxing jurisdiction. Changes in the distribution of profits and losses among taxing jurisdictions may have a significant impact on our effective income tax rate. The Company does not consider the undistributed earnings of our foreign subsidiaries to be indefinitely reinvested outside of the United States.
Pensions and Other Postretirement Benefits	Pensions and Other Postretirement Benefits The Company provides retirement benefits to certain employees, including defined benefit pension plans and postretirement medical plans. The determination of benefit obligations and expense is based on actuarial models. In order to measure benefit costs and obligations using these models, assumptions are made with regard to the discount rate, expected return on plan assets, cash balance crediting rate, lump sum conversion rate and the assumed rate of compensation increases. In addition, retiree medical care cost trend rates are a key assumption used exclusively in determining costs for the Company’s postretirement health care and life insurance benefit plans.
Stock-based Compensation	Stock-based Compensation The Company accounts for stock-based compensation for stock options and stock appreciation rights under the fair value method and uses the Black-Scholes-Merton model to estimate the value of such stock-based awards granted to its employees and non-executive directors. Expected volatility is based upon the historical volatility of a peer group for a period equal to the expected term, as the Company does not have adequate history to calculate its own volatility and believes the expected volatility will approximate the historical volatility of the peer group. The Company does not currently anticipate paying dividends. The expected term represents the period of time the grants are expected to be outstanding. The risk-free interest rate is based on the United States Treasury yield curve in effect at the time of the grant. The Company values its stock-based compensation for restricted stock awards and restricted stock units based on the closing market price of the Company’s common stock on the date of grant. The Company accounts for its stock-based compensation for performance awards related to compound annual earnings per share (“EPS”) growth and/or other internal performance measures based on the closing market price of the Company’s common stock on the date of grant, and for performance awards related to relative total shareholder return (“TSR”) based on a Monte Carlo simulation model.
Leases	Leases The Company determines if an arrangement is a lease at inception and reassesses if there are changes in terms and conditions of the contract. Operating leases are included in operating lease right-of-use (“ROU”) assets, other current liabilities, and operating lease liabilities on our consolidated balance sheets. Finance leases are included in deposits and other assets, other current liabilities, and other liabilities on our consolidated balance sheets. Lease assets and liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. Lease assets also include any lease payments made before lease commencement and initial direct costs and excludes lease incentives. In determining the lease term at lease commencement, the Company includes the noncancellable term and the periods which the Company deems it is reasonably certain to exercise or not to exercise a renewal or cancellation option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. The Company has lease agreements with lease and non-lease components that the Company has elected to account for as single lease components.
Earnings Per Share	Earnings Per Share The calculation of earnings per share is based on the weighted average number of common shares or common stock equivalents outstanding during the applicable period. The dilutive effect of common stock equivalents is excluded from basic earnings per share and is included in the calculation of diluted earnings per share. Potentially dilutive securities include outstanding stock options and unvested restricted stock units, restricted stock and performance awards. Diluted shares outstanding are calculated based on the average share price for each fiscal period using the treasury stock method. Under the treasury stock method, the amount the employee must pay for exercising stock options, and the amount of compensation cost for future service that the Company has not yet recognized are assumed to be used to repurchase shares.
Investments in Unconsolidated Affiliates	Investments in Unconsolidated Affiliates The Company’s investments in unconsolidated affiliates are accounted for under the equity method if the Company exercises significant influence or has an investment in a limited partnership that is considered to be greater than minor. These investments are classified as investments in unconsolidated affiliates on the accompanying consolidated balance sheets. The Company records its pro rata share of the earnings, adjusted for accretion of basis difference, of these investments in equity in earnings (losses) of unconsolidated affiliates on the accompanying consolidated statements of income. The Company reviews its investments in unconsolidated affiliates for impairment whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable.
Treasury Stock	Treasury Stock The Company records treasury stock purchases under the cost method. Upon reissuance of treasury stock, amounts in excess of the acquisition cost are credited to additional paid-in capital. If the Company reissues treasury stock at an amount below its acquisition cost and additional paid-in capital associated with prior treasury stock transactions is insufficient to cover the difference between the acquisition cost and the reissue price, this shortfall is recorded in retained earnings.
Recently Issued Accounting Standards	Recently Issued Accounting Standards Accounting pronouncements recently adopted In March 2020, the FASB issued new accounting guidance that provides optional expedients and exceptions for applying GAAP to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another rate that is expected to be discontinued. The new accounting guidance became effective for the Company as of March 12, 2020 through December 31, 2022. The Company adopted this new accounting guidance on January 1, 2021. The adoption of this new accounting guidance did not have a material effect on the Company’s consolidated financial statements. In January 2020, the FASB issued new accounting guidance that states any equity security transitioning from the alternative method of accounting to the equity method, or vice versa, due to an observable transaction, will be remeasured immediately before the transition. In addition, the new accounting guidance clarifies the accounting for certain non-derivative forward contracts or purchased call options to acquire equity securities stating such instruments will be measured using the fair value principles before settlement or exercise. The Company adopted this new accounting guidance on January 1, 2021. The adoption of this new accounting guidance did not have a material effect on the Company’s consolidated financial statements. In December 2019, the FASB issued new accounting guidance to clarify and simplify the accounting for income taxes. Changes under the new guidance includes eliminating certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The Company adopted this new accounting guidance on January 1, 2021. The adoption of this new accounting guidance did not have a material effect on the Company’s consolidated financial statements. Accounting pronouncements issued but not adopted as of December 31, 2021 In October 2021, the FASB issued new accounting guidance that requires contract assets and contract liabilities (i.e., deferred revenue) acquired in a business combination to be recognized and measured by the acquirer on the acquisition date in accordance with Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers. Under current GAAP, an acquirer generally recognizes assets acquired and liabilities assumed in a business combination, including contract assets and contract liabilities arising from revenue contracts with customers and other similar contracts that are accounted for in accordance with ASC 606, at fair value on the acquisition date. Generally, this new guidance will result in the acquirer recognizing contract assets and contract liabilities at the same amounts recorded by the acquiree. The new accounting guidance will be effective for the Company on January 1, 2023, with early adoption permitted. The Company plans on adopting this new accounting guidance effective January 1, 2022. The impact of this guidance on the Company's consolidated financial statements will depend on the size and nature of future acquisitions.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Summary of Major Classes of Property and Equipment	Property and equipment are stated at cost and are depreciated using the straight-line method over the shorter of the asset’s estimated useful life or the lease term, if related to leased property, as follows: Buildings and leasehold improvements 3 - 40 years Equipment 3 - 10 years Furniture and fixtures 5 - 10 years Transportation equipment 3 - 20 years The major classes of property and equipment were as follows: December 31, (in millions) 2021 2020 Land, buildings and leasehold improvements $ 376 $ 351 Equipment 745 657 Furniture and fixtures 72 76 Transportation equipment 69 71 Property and equipment, gross 1,262 1,155 Less accumulated depreciation (765) (673) Property and equipment, net $ 497 $ 482
Definite-Lived Identifiable Intangible Assets Amortized	Definite-lived other identifiable intangible assets are amortized primarily using an accelerated method that reflects the pattern in which the Company expects to benefit from the use of the asset over its estimated remaining useful life as follows: Trademarks and trade names 1 - 17 years Contract backlog and client relationships 1 - 25 years Software and related assets 1 - 10 years Databases 1 - 9 years Non-compete agreements and other 2 - 5 years The following is a summary of other identifiable intangible assets: December 31, 2021 December 31, 2020 (in millions) Gross Accumulated Net Gross Accumulated Net Definite-lived other identifiable intangible assets: Client relationships and backlog $ 5,193 $ (2,024) $ 3,169 $ 5,095 $ (1,745) $ 3,350 Trademarks, trade name and other 550 (241) 309 544 (212) 332 Databases 1,889 (1,853) 36 1,930 (1,629) 301 Software and related assets 2,637 (1,213) 1,424 2,109 (915) 1,194 Non-compete agreements 17 (12) 5 28 (18) 10 $ 10,286 $ (5,343) $ 4,943 $ 9,706 $ (4,519) $ 5,187 Indefinite-lived other identifiable intangible assets: Trade name $ — $ — $ — $ 18 $ — $ 18

Revenues by Geography, Concen_2

Revenues by Geography, Concentration of Credit Risk and Remaining Performance Obligations (Tables)	12 Months Ended
	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Summary of Revenues by Geographical Region and Reportable Segment	The Company attributes revenues to geographical region based upon where the services are performed. The following tables represent revenues by geographical region and reportable segment for the years ended December 31, 2021, 2020 and 2019: December 31, 2021 (in millions) Technology & Analytics Solutions Research & Development Solutions Contract Sales & Medical Solutions Total Revenues: Americas $ 2,610 $ 3,887 $ 351 $ 6,848 Europe and Africa 2,282 1,899 176 4,357 Asia-Pacific 642 1,770 257 2,669 Total revenues $ 5,534 $ 7,556 $ 784 $ 13,874 December 31, 2020 (in millions) Technology & Analytics Solutions Research & Development Solutions Contract Sales & Medical Solutions Total Revenues: Americas $ 2,413 $ 2,680 $ 326 $ 5,419 Europe and Africa 1,844 1,667 184 3,695 Asia-Pacific 601 1,413 231 2,245 Total revenues $ 4,858 $ 5,760 $ 741 $ 11,359 December 31, 2019 (in millions) Technology & Analytics Solutions Research & Development Solutions Contract Sales & Medical Solutions Total Revenues: Americas $ 2,370 $ 2,693 $ 399 $ 5,462 Europe and Africa 1,543 1,734 200 3,477 Asia-Pacific 573 1,361 215 2,149 Total revenues $ 4,486 $ 5,788 $ 814 $ 11,088

Trade Accounts Receivable, Un_2

Trade Accounts Receivable, Unbilled Services and Unearned Income (Tables)	12 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Trade Accounts Receivable and Unbilled Services	Trade accounts receivables and unbilled services consist of the following: December 31, (in millions) 2021 2020 Billed $ 1,275 $ 1,181 Unbilled services 1,309 1,263 Trade accounts receivable and unbilled services 2,584 2,444 Allowance for doubtful accounts (33) (34) Trade accounts receivable and unbilled services, net $ 2,551 $ 2,410
Schedule of Net Contract Assets (Liabilities)	Unbilled services and unearned income was as follows: December 31, (in millions) 2021 2020 Change Unbilled services $ 1,309 $ 1,263 $ 46 Unearned income (1,825) (1,252) (573) Net balance $ (516) $ 11 $ (527)

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Investments in and Advances to Unconsolidated Affiliates	The following is a summary of the Company’s investments in unconsolidated affiliates: December 31, (in millions) 2021 2020 NovaQuest Pharma Opportunities Fund III, L.P. (“NQ Fund III”) $ 7 $ 7 NovaQuest Pharma Opportunities Fund IV, L.P. (“NQ Fund IV”) 12 8 NovaQuest Pharma Opportunities Fund V, L.P. (“NQ Fund V”) 22 17 NovaQuest Private Equity Fund I, L.P. (“NQ PE Fund I”) 7 3 NostraData Pty Ltd. (“NostraData”) 18 18 Inteliquet (“Inteliquet”) — 16 Helparound ("Helparound") 3 3 Longwood Fund V, L.P. ("Longwood") 3 1 Other 16 11 $ 88 $ 84
Summary of Investments in Unconsolidated Variable Interest Entities and Estimated Maximum Exposure to Loss	As of December 31, 2021, the Company’s investments in unconsolidated variable interest entities (“VIEs”) and its estimated maximum exposure to loss were as follows: (in millions) Investments in Unconsolidated VIEs Maximum Exposure to Loss NQ Fund III $ 7 $ 12 NQ Fund IV 12 14 NQ Fund V 22 51 NQ PE Fund I 7 8 Longwood 3 10 Other 5 9 $ 56 $ 104

Derivatives (Tables)

Derivatives (Tables)	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Fair Values of Derivative Instruments Designated as Hedges	The fair values of the Company’s derivative instruments, on a gross basis, and the line items on the accompanying consolidated balance sheets to which they were recorded are summarized in the following table: December 31, 2021 December 31, 2020 (in millions) Balance Sheet Classification Assets Liabilities Notional Assets Liabilities Notional Derivatives designated as hedging instruments: Foreign exchange forward contracts Other current assets and liabilities $ — 3 $ 110 $ 5 $ — $ 70 Interest rate swaps Other assets and liabilities 4 24 1,800 — 55 1,800 Derivatives not designated as hedging instruments: Interest rate swaps Other liabilities — — — — 1 356 Total derivatives $ 4 $ 27 $ 5 $ 56
Pre-tax Effect of Cash Flow Hedging Instruments on Other Comprehensive Income (Loss)	The pre-tax effect of the Company’s cash flow hedging instruments on other comprehensive income (loss) is summarized in the following table: Year Ended December 31, (in millions) 2021 2020 2019 Foreign exchange forward contracts $ (8) $ 1 $ 2 Interest rate derivatives 35 (28) (22) Total $ 27 $ (27) $ (20)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Assets and Liabilities Measured on Recurring Basis	The following table summarizes the fair value of the Company’s financial assets and liabilities that are measured and reported at fair value on a recurring basis as of December 31, 2021: (in millions) Level 1 Level 2 Level 3 Total Assets: Marketable securities $ 145 $ — $ — $ 145 Derivatives — 4 — 4 Total $ 145 $ 4 $ — $ 149 Liabilities: Derivatives $ — $ 27 $ — $ 27 Contingent consideration — — 76 76 Total $ — $ 27 $ 76 $ 103 The following table summarizes the fair value of the Company’s financial assets and liabilities that are measured and reported at fair value on a recurring basis as of December 31, 2020: (in millions) Level 1 Level 2 Level 3 Total Assets: Marketable securities $ 122 $ — $ — $ 122 Derivatives — 5 — 5 Total $ 122 $ 5 $ — $ 127 Liabilities: Derivatives $ — $ 56 $ — $ 56 Contingent consideration — — 119 119 Total $ — $ 56 $ 119 $ 175
Changes in Level 3 Financial Assets and Liabilities Measured on Recurring Basis	The following table summarizes the changes in Level 3 financial assets and liabilities measured on a recurring basis for the year ended December 31,: Contingent Consideration (in millions) 2021 2020 2019 Balance as of January 1 $ 119 $ 113 $ 123 Business combinations 39 47 40 Contingent consideration paid (39) (22) (46) Revaluations included in earnings and foreign currency translation adjustments (43) (19) (4) Balance as of December 31 $ 76 $ 119 $ 113

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Summary of Major Classes of Property and Equipment	Property and equipment are stated at cost and are depreciated using the straight-line method over the shorter of the asset’s estimated useful life or the lease term, if related to leased property, as follows: Buildings and leasehold improvements 3 - 40 years Equipment 3 - 10 years Furniture and fixtures 5 - 10 years Transportation equipment 3 - 20 years The major classes of property and equipment were as follows: December 31, (in millions) 2021 2020 Land, buildings and leasehold improvements $ 376 $ 351 Equipment 745 657 Furniture and fixtures 72 76 Transportation equipment 69 71 Property and equipment, gross 1,262 1,155 Less accumulated depreciation (765) (673) Property and equipment, net $ 497 $ 482
Schedule of Property and Equipment Depreciation Expense	Property and equipment depreciation expense was as follows: Year Ended December 31, (in millions) 2021 2020 2019 Depreciation expense $ 147 $ 134 $ 128

Goodwill and Identifiable Int_2

Goodwill and Identifiable Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization Expense Associated with Identifiable Definite-Lived Intangible Assets	Amortization expense associated with other identifiable definite-lived intangible assets was as follows: Year Ended December 31, (in millions) 2021 2020 2019 Amortization expense $ 1,117 $ 1,153 $ 1,074
Definite-Lived Identifiable Intangible Assets Amortized	Definite-lived other identifiable intangible assets are amortized primarily using an accelerated method that reflects the pattern in which the Company expects to benefit from the use of the asset over its estimated remaining useful life as follows: Trademarks and trade names 1 - 17 years Contract backlog and client relationships 1 - 25 years Software and related assets 1 - 10 years Databases 1 - 9 years Non-compete agreements and other 2 - 5 years The following is a summary of other identifiable intangible assets: December 31, 2021 December 31, 2020 (in millions) Gross Accumulated Net Gross Accumulated Net Definite-lived other identifiable intangible assets: Client relationships and backlog $ 5,193 $ (2,024) $ 3,169 $ 5,095 $ (1,745) $ 3,350 Trademarks, trade name and other 550 (241) 309 544 (212) 332 Databases 1,889 (1,853) 36 1,930 (1,629) 301 Software and related assets 2,637 (1,213) 1,424 2,109 (915) 1,194 Non-compete agreements 17 (12) 5 28 (18) 10 $ 10,286 $ (5,343) $ 4,943 $ 9,706 $ (4,519) $ 5,187 Indefinite-lived other identifiable intangible assets: Trade name $ — $ — $ — $ 18 $ — $ 18
Schedule of Indefinite-Lived Intangible Assets	The following is a summary of other identifiable intangible assets: December 31, 2021 December 31, 2020 (in millions) Gross Accumulated Net Gross Accumulated Net Definite-lived other identifiable intangible assets: Client relationships and backlog $ 5,193 $ (2,024) $ 3,169 $ 5,095 $ (1,745) $ 3,350 Trademarks, trade name and other 550 (241) 309 544 (212) 332 Databases 1,889 (1,853) 36 1,930 (1,629) 301 Software and related assets 2,637 (1,213) 1,424 2,109 (915) 1,194 Non-compete agreements 17 (12) 5 28 (18) 10 $ 10,286 $ (5,343) $ 4,943 $ 9,706 $ (4,519) $ 5,187 Indefinite-lived other identifiable intangible assets: Trade name $ — $ — $ — $ 18 $ — $ 18
Summary of Goodwill by Segment	The following is a summary of goodwill by segment for the years ended December 31, 2021 and 2020: (in millions) Technology & Analytics Solutions Research & Development Solutions Contract Sales & Medical Solutions Consolidated Balance as of December 31, 2019 $ 10,374 $ 1,646 $ 139 $ 12,159 Business combinations 86 29 — 115 Impact of foreign currency fluctuations and other 404 (29) 5 380 Balance as of December 31, 2020 10,864 1,646 144 12,654 Business combinations 874 160 26 1,060 Impact of foreign currency fluctuations and other (401) (4) (8) (413) Balance as of December 31, 2021 $ 11,337 $ 1,802 $ 162 $ 13,301

Accrued Expenses (Tables)

Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2021
Payables and Accruals [Abstract]
Accrued Expenses	Accrued expenses consist of the following: December 31, (in millions) 2021 2020 Compensation, including bonuses, fringe benefits and payroll taxes $ 946 $ 852 Restructuring 30 53 Interest 56 55 Client contract related 884 849 Professional fees 102 92 Contingent consideration and deferred purchase price 31 59 Other 311 272 $ 2,360 $ 2,232

Credit Arrangements (Tables)

Credit Arrangements (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Summary of Credit Facilities	The following is a summary of the Company’s revolving credit facilities as of December 31, 2021: Facility Interest Rates $1,500 million (revolving credit facility) LIBOR in the relevant currency borrowed plus a margin of 1.25% as of December 31, 2021 $110 million (receivables financing facility) LIBOR Market Index Rate (0.10% as of December 31, 2021) plus 0.90%
Summary of Debt	The following table summarizes the Company’s debt at the dates indicated: December 31, (dollars in millions) 2021 2020 Revolving Credit Facility due 2026: U.S. Dollar denominated borrowings—U.S. Dollar LIBOR at average floating rates of 1.35% $ 100 $ — Senior Secured Credit Facilities: Term A Loan due 2023—U.S. Dollar — 728 Term A Loan due 2023—U.S. Dollar — 766 Term A Loan due 2026—U.S. Dollar LIBOR at average floating rates of 1.47% 1,415 — Term A Loan due 2023—Euro — 400 Term A Loan due 2026—Euro LIBOR at average floating rates of 1.25% 351 — Term B Loan due 2024—U.S. Dollar LIBOR at average floating rates of 1.85% 510 535 Term B Loan due 2024—Euro LIBOR at average floating rates of 2.00% 1,242 1,413 Term B Loan due 2025—U.S. Dollar LIBOR at average floating rates of 1.85% 670 726 Term B Loan due 2025—U.S. Dollar LIBOR at average floating rates of 1.97% 860 926 Term B Loan due 2025—Euro LIBOR at average floating rates of 2.00% 592 697 5.0% Senior Notes due 2027—U.S. Dollar denominated 1,100 1,100 5.0% Senior Notes due 2026—U.S. Dollar denominated 1,050 1,050 2.875% Senior Notes due 2025—Euro denominated 476 515 3.25% Senior Notes due 2025—Euro denominated — 1,748 2.25% Senior Notes due 2028—Euro denominated 817 883 2.875% Senior Notes due 2028—Euro denominated 807 872 1.750% Senior Notes due 2026—Euro denominated 624 — 2.250% Senior Notes due 2029—Euro denominated 1,021 — Receivables financing facility due 2022—U.S. Dollar LIBOR — 240 Receivables financing facility due 2024—U.S. Dollar LIBOR at average floating rates of 1.00% 550 — Principal amount of debt 12,185 12,600 Less: unamortized discount and debt issuance costs (60) (67) Less: current portion (91) (149) Long-term debt $ 12,034 $ 12,384
Contractual Maturities of Long-term Debt	Contractual maturities of long-term debt as of December 31, 2021 are as follows: (in millions) 2022 $ 91 2023 91 2024 2,392 2025 2,690 2026 3,178 Thereafter 3,743 $ 12,185

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Components of Lease Expense	The components of lease expense were as follows: (in millions) Classification Year Ended December 31, 2021 Year Ended December 31, 2020 Year Ended December 31, 2019 Operating lease cost (1) Selling, general and administrative expenses $ 184 $ 209 $ 193 Finance lease cost (1) Depreciation and amortization, and Interest expense 10 6 — Total lease cost $ 194 $ 215 $ 193 (1) Includes variable lease costs, which are immaterial.
Other Information Related to Leases	Other information related to leases was as follows: (in millions) Year Ended December 31, 2021 Year Ended December 31, 2020 Year Ended December 31, 2019 Supplemental Cash Flow: Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 175 $ 211 $ 195 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 81 $ 109 $ 96 Finance leases $ 44 $ 119 $ — Weighted Average Remaining Lease Term: Operating leases 4.53 years 4.58 years 5.01 years Finance leases 21.28 years 24.00 years — Weighted Average Discount Rate: Operating leases 3.36 % 3.78 % 4.22 % Finance leases 2.70 % 3.18 % —
Future Minimum Lease Payments Under Non-cancellable Leases	Future minimum lease payments under non-cancellable leases as of December 31, 2021 were as follows: (in millions) Operating Leases Finance Leases 2022 $ 143 $ 10 2023 114 10 2024 86 10 2025 70 10 2026 33 10 Thereafter 48 201 Total future minimum lease payments 494 251 Less imputed interest (41) (65) Total $ 453 $ 186 Reported as of December 31, 2021: Other current liabilities $ 140 $ 9 Operating lease liabilities 313 — Other liabilities — 177 Total $ 453 $ 186

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Schedule of Share Repurchases Made Both Under and Outside of Repurchase Program	Below is a summary of the share repurchases made both under and outside of the Repurchase Program: Year Ended December 31, (in millions, except per share data) 2021 2020 2019 Number of shares of common stock repurchased 1.7 2.7 6.6 Aggregate purchase price $ 395 $ 423 $ 945 Average price per share $ 238.22 $ 155.63 $ 143.02

Business Combinations (Tables)

Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table provides certain financial information for these acquisitions: Year Ended December 31, (in millions) 2021 2020 Assets acquired: Cash and cash equivalents $ 40 $ 10 Other assets 75 22 Goodwill 1,060 115 Other identifiable intangibles 576 101 Liabilities assumed: Other liabilities (62) (9) Deferred income taxes, long-term (147) (5) Net assets acquired (1) $ 1,542 $ 234 (1) Total cash paid for acquisitions, net of cash acquired, in the accompanying consolidated statements of cash flows, includes contingent consideration and deferred purchase price of $44 million and $47 million for the years ended December 31, 2021 and 2020, respectively.
Indefinite-Lived Intangible Assets Acquired as Part of Business Combination	The following table provides a summary of the estimated fair value of certain intangible assets acquired: Year Ended December 31, (in millions) Amortization Period 2021 2020 Other identifiable intangibles: Customer relationships 10 - 18 years $ 393 $ 90 Non-compete agreements 3 - 5 years 2 2 Software and related assets 3 - 8 years 133 8 Trade names 3 - 15 years 31 1 Backlog 2 years 17 — Total Other identifiable intangibles $ 576 $ 101

Restructuring (Tables)

Restructuring (Tables)	12 Months Ended
	Dec. 31, 2021
Restructuring and Related Activities [Abstract]
Summary of Amounts Recorded for Restructuring Plans	The following amounts were recorded for the restructuring plans: (in millions) Severance and Related Costs Exit Costs Total Balance as of December 31, 2019 $ 64 $ 3 $ 67 Expense, net of reversals 52 — 52 Payments (67) (1) (68) Foreign currency translation and other 2 — 2 Balance as of December 31, 2020 $ 51 $ 2 $ 53 Expense, net of reversals 20 — 20 Payments (40) (1) (41) Foreign currency translation and other (1) (1) (2) Balance as of December 31, 2021 $ 30 $ — $ 30

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Components of Income Before Income Taxes and Equity in Earnings (Losses) of Unconsolidated Affiliates	The components of income before income taxes and equity in earnings (losses) of unconsolidated affiliates are as follows: Year Ended December 31, (in millions) 2021 2020 2019 Domestic $ (73) $ (649) $ (504) Foreign 1,201 1,022 856 $ 1,128 $ 373 $ 352
Components of Income Tax Expense Attributable to Continuing Operations	The components of income tax expense attributable to continuing operations are as follows: Year Ended December 31, (in millions) 2021 2020 2019 Current expense: Federal and state $ 16 $ — $ 11 Foreign 293 244 248 309 244 259 Deferred (benefit) expense: Federal and state (106) (161) (109) Foreign (40) (11) (34) (146) (172) (143) $ 163 $ 72 $ 116
Effective Income Tax Rate Reconciliation	The differences between the Company’s consolidated income tax expense attributable to continuing operations and the expense computed at the United States statutory income tax rate of 21% were as follows: Year Ended December 31, (in millions) 2021 2020 2019 Federal income tax expense at statutory rate $ 237 $ 78 $ 74 State and local income taxes, net of federal effect 2 19 — Research and development (14) (14) (21) United States taxes recorded on foreign earnings(*) (29) 2 9 Tax contingencies 3 (5) 27 Foreign Derived Intangible Income (“FDII”) (34) (8) 20 Foreign rate differential 17 25 26 Equity compensation (23) (29) (14) Non-taxable gain on acquisition adjustment — 6 (5) Non-controlling interest — (5) (6) Other 4 3 6 $ 163 $ 72 $ 116 (*) Includes impact of GILTI, and other U.S. taxes on foreign earnings.
Income Tax Effects of Temporary Differences from Continuing Operations that Give Rise to Significant Portions of Deferred Income Tax Assets (Liabilities)	The income tax effects of temporary differences from continuing operations that give rise to significant portions of deferred income tax assets (liabilities) are presented below: December 31, (in millions) 2021 2020 Deferred income tax assets: Net operating loss and capital loss carryforwards $ 212 $ 231 Tax credit carryforwards 375 369 Accrued expenses and unearned income 59 54 Employee benefits 212 228 Lease liability 92 139 Foreign exchange on debt instruments — 143 U.S. interest expense limitation 62 75 Other 64 64 Total deferred income tax assets 1,076 1,303 Valuation allowance for deferred income tax assets (294) (306) Total deferred income tax assets (net of valuation allowance) 782 997 Deferred income tax liabilities: Amortization and depreciation (898) (1,038) Lease right-of-use assets (81) (133) Foreign exchange on debt instruments (36) — Other (53) (50) Total deferred income tax liabilities (1,068) (1,221) Net deferred income tax liabilities $ (286) $ (224)
Reconciliation of Beginning and Ending Amount of Gross Unrecognized Income Tax Benefits	A reconciliation of the beginning and ending amount of gross unrecognized income tax benefits is presented below: Year Ended December 31, (in millions) 2021 2020 2019 Balance as of January 1, $ 118 $ 120 $ 94 Additions based on tax positions related to the current year 7 5 5 Additions for income tax positions of prior years 16 15 33 Impact of changes in exchange rates (3) 3 — Settlements with tax authorities (2) (2) (1) Reductions for income tax positions of prior years (11) (16) (6) Reductions due to the lapse of the applicable statute of limitations (9) (7) (5) Balance as of December 31, $ 116 $ 118 $ 120
Summary of Tax Years Open for Examination	The Company conducts business globally and, as a result, files income tax returns in the United States federal jurisdiction and various state and foreign jurisdictions. In the normal course of business, the Company is subject to examination by taxing authorities throughout the world. The following table summarizes the tax years that remain open for examination by tax authorities in the most significant jurisdictions in which the Company operates: United States 2017-2020 India 2006-2021 Japan 2019-2020 United Kingdom 2019-2020 Switzerland 2016-2020

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2021
Retirement Benefits [Abstract]
Summary of Changes in Benefit Obligation, Plan Assets and Funded Status of Pension Benefit Plans	The following table summarizes changes in the benefit obligation, the plan assets and the funded status of the pension benefit plans: Pension Benefits United States Plans Non-United States Plans December 31, (in millions) 2021 2020 2021 2020 Obligation and funded status: Change in benefit obligation: Projected benefit obligation at beginning of year $ 481 $ 401 $ 693 $ 591 Service costs 14 13 29 29 Interest cost 11 12 6 8 Actuarial losses (7) 65 (25) 60 Business combinations — — 4 — Benefits paid (11) (10) (23) (18) Contributions — — 2 2 Amendments — — (2) (1) Settlements — — (7) (7) Foreign currency fluctuations and other — — (25) 29 Projected benefit obligation at end of year 488 481 652 693 Change in plan assets: Fair value of plan assets at beginning of year 455 401 475 418 Actual return on plan assets 76 61 26 38 Contributions 4 3 26 27 Benefits paid (11) (10) (23) (18) Settlements — — (7) (7) Business combinations — — 3 — Foreign currency fluctuations and other — — (6) 17 Fair value of plan assets at end of year 524 455 494 475 Funded status $ 36 $ (26) $ (158) $ (218)
Summary of Amounts Recognized in Consolidated Balance Sheets	The following table summarizes the amounts recognized in the consolidated balance sheets related to the pension benefit plans: Pension Benefits United States Plans Non-United States Plans December 31, (in millions) 2021 2020 2021 2020 Deposits and other assets $ 83 $ 23 $ 39 $ 7 Accrued expenses $ 3 $ 2 $ 10 $ 15 Other liabilities $ 44 $ 47 $ 187 $ 210 AOCI $ 29 $ (21) $ (24) $ (65)
Summary of Accumulated Benefit Obligation for Pension Benefit Plans	The following table summarizes the accumulated benefit obligation for all pension benefit plans: Pension Benefits United States Plans Non-United States Plans December 31, (in millions) 2021 2020 2021 2020 Accumulated benefit obligation $ 482 $ 474 $ 608 $ 654
Summary of Pension Plans with Accumulated Benefit Obligation in Excess of Plan Assets and Projected Benefit Obligations in Excess of Plan Assets	The following table provides the information for pension plans with an accumulated benefit obligation in excess of plan assets and projected benefit obligations in excess of plan assets: Pension Benefits United States Plans Non-United States Plans December 31 (in millions) 2021 2020 2021 2020 Plans with accumulated benefit obligation in excess of plan assets: Accumulated benefit obligation $ 50 $ 52 $ 222 $ 572 Fair value of plan assets $ 5 $ 5 $ 67 $ 384 Plans with projected benefit obligation in excess of plan assets: Projected benefit obligation $ 52 $ 53 $ 282 $ 610 Fair value of plan assets $ 5 $ 5 $ 85 $ 386
Components of Net Periodic Benefit Cost and Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)	The components of net periodic benefit cost changes in plan assets and benefit obligations recognized in other comprehensive income were as follows: Pension Benefits United States Plans Non-United States Plans Year Ended December 31, (in millions) 2021 2020 2019 2021 2020 2019 Service cost $ 14 $ 13 $ 12 $ 29 $ 29 $ 25 Interest cost 11 12 14 6 8 9 Expected return on plan assets (32) (30) (25) (20) (18) (16) Amortization of actuarial losses — — — 1 1 — Curtailment gain — — — — — (5) Settlement gain — — — 1 — — Net periodic benefit cost (7) (5) 1 17 20 13 Other changes in plan assets and benefit obligations recognized in other comprehensive loss: Actuarial (gain) loss – current years (50) 34 (2) (39) 35 32 Prior service cost - current year — — — (2) — — Curtailment gain - current year — — — — — 5 Total recognized in other comprehensive income (50) 34 (2) (41) 35 37 Total recognized in net periodic benefit cost and other comprehensive income $ (57) $ 29 $ (1) $ (24) $ 55 $ 50
Schedule of Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost and Benefit Obligations	The weighted average assumptions used to determine net periodic benefit cost were as follows for the years ended December 31: Pension Benefits United States Plans Non-United States Plans 2021 2020 2019 2021 2020 2019 Discount rate 2.84 % 3.52 % 4.42 % 1.00 % 1.45 % 1.99 % Rate of compensation increases 3.00 % 3.00 % 3.00 % 2.55 % 2.78 % 4.54 % Expected return on plan assets 7.23 % 7.42 % 7.67 % 3.92 % 3.91 % 4.02 % The weighted average assumptions used to determine benefit obligations were as follows as of December 31: Pension Benefits United States Plans Non-United States Plans 2021 2020 2021 2020 Discount rate 3.08 % 2.84 % 1.42 % 1.02 % Rate of compensation increases 3.00 % 3.00 % 2.57 % 2.55 %
Schedule of Allocation of Pension Plan Assets	The Company’s pension plan target asset allocations and weighted average asset allocations, by asset category, were as follows: Plan Assets as of December 31, Target United States Plans Non-United States Plans Total Asset Category Allocation 2021 2020 2021 2020 2021 2020 Equity securities 45-65% 71.13 % 71.15 % 41.29 % 42.69 % 56.65 % 56.62 % Debt securities 10-30% 23.72 23.88 24.36 20.08 24.03 21.94 Real estate 0-5% 5.15 4.97 — — 2.65 2.43 Other 10-30% — — 34.35 37.23 16.67 19.02 Total 100.00 % 100.00 % 100.00 % 100.00 % 100.00 % 100.00 %
Summary of Plan Assets Measured at Fair Value	The following table summarizes United States plan assets measured at fair value: December 31, 2021 December 31, 2020 Asset Category Level 1 Level 2 Total Level 1 Level 2 Total (in millions) Domestic equities $ 34 $ — $ 34 $ 29 $ — $ 29 International equities 10 — 10 9 — 9 Corporate bonds 75 — 75 65 — 65 Real estate 27 — 27 23 — 23 Total assets in the fair value hierarchy 146 — 146 126 — 126 Common/collective trusts measured at net asset value (“NAV”)(1) — — 378 — — 329 Total $ 146 $ — $ 524 $ 126 $ — $ 455 The following table summarizes non-United States plan assets measured at fair value: December 31, 2021 December 31, 2020 Asset Category Level 1 Level 2 Total Level 1 Level 2 Total (in millions) International equities $ 1 $ 56 $ 57 $ 3 $ 66 $ 69 Debt issued by national, state or local government 3 118 121 3 93 96 Investments funds — 10 10 — 10 10 Insurance contracts — 160 160 — 171 171 Other 3 7 10 — 6 6 Total assets in the fair value hierarchy 7 351 358 6 346 352 Assets measured at NAV(1) — — 136 — — 123 Total $ 7 $ 351 $ 494 $ 6 $ 346 $ 475 (1) Certain investments that are measured at fair value using the net asset value (NAV) per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in the above plan asset tables are intended to permit reconciliation of the fair value of plan assets in the fair value hierarchy to the plan asset amounts presented in the above funded status table as of December 31, 2021 and 2020.
Schedule of Expected Benefit Payments, Net of Expected Participants Contributions for Pension Benefits	The following benefit payments (net of expected participant contributions) for pension benefits are expected to be paid as follows: (in millions) 2022 $ 44 2023 44 2024 47 2025 49 2026 54 Years 2027 through 2031 283 $ 521
Estimated Fair Value of Stock Options and SARs	The Company used the following assumptions when estimating the value of the stock-based compensation for stock options and SARs issued as follows: Year Ended December 31, 2021 2020 2019 Expected volatility 27 – 31% 23 – 31% 23 – 24% Weighted average expected volatility 29% 23% 23% Expected dividends 0.0% 0.0% 0.0% Expected term (in years) 3.6 – 6.6 3.2 – 6.2 3.7 – 6.7 Risk-free interest rate 0.28 – 1.40% 0.17 –1.41% 1.55 – 2.56%
Summary of Stock Option Activity	The Company’s stock option activity in 2021 is as follows: (in millions, except number of options and exercise price) Number of Options Weighted Average Exercise Price Aggregate Intrinsic Value Outstanding as of December 31, 2020 532,627 $ 48.42 $ 70 Exercised (160,966) 40.88 Outstanding as of December 31, 2021 371,661 $ 51.69 $ 86
Schedule of Stock Appreciation Rights Activity	The Company’s SSR activity in 2021 is as follows: (in millions, except number of SSRs and exercise price) Number of SSRs Weighted Average Exercise Price Aggregate Intrinsic Value Outstanding as of December 31, 2020 4,241,342 $ 112.66 $ 282 Granted 494,929 184.96 Exercised (695,195) 103.06 Canceled (86,183) 152.10 Outstanding as of December 31, 2021 3,954,893 $ 122.54 $ 632
Summary of Performance Award Activity	The Company’s performance award activity in 2021 is as follows: Number of Performance Awards Weighted Average Grant-Date Fair Value Outstanding as of December 31, 2020 786,165 $ 136.96 Granted 248,019 202.66 Additional goal achievement shares 303,128 104.29 Vested (631,215) 103.96 Canceled (35,937) 168.49 Outstanding as of December 31, 2021 670,160 $ 175.89
Schedule of Restricted Stock Units Activity	The Company’s RSU activity in 2021 is as follows: Number of RSUs Weighted Average Grant-Date Outstanding as of December 31, 2020 573,090 $ 143.23 Granted (1) 536,199 196.91 Vested (214,084) 128.85 Canceled (74,419) 170.29 Outstanding as of December 31, 2021 820,786 $ 179.59 (1) Pursuant to the IQVIA Holdings Inc. Non-Employee Director Deferral Plan (the “Director Deferral Plan”), non-employee directors may elect to defer receipt of their cash retainers. If a director elects to defer his or her retainer, he or she will instead be credited with that value in deferred shares under the Director Deferral Plan. Deferred shares become payable in Company common stock following a termination of the director’s Board service or the director’s death, or upon a change in control of the Company. The Company granted 1,017 deferred RSUs in 2021.

Property, Equipment and Softw_2

Property, Equipment and Software by Geography (Tables)	12 Months Ended
	Dec. 31, 2021
Property Equipment And Software By Geography [Abstract]
Property, Equipment and Software, Net, by Geographic Region	The following table represents the Company’s property, equipment and software, net, by geographic region, which is further broken down to show each country that accounts for 10% or more of the totals: December 31, (in millions) 2021 2020 Property, equipment and software, net: Americas: United States $ 1,573 $ 1,379 Other 69 66 Americas 1,642 1,445 Europe and Africa 218 161 Asia-Pacific 61 70 Total property, equipment and software, net $ 1,921 $ 1,676

Segments (Tables)

Segments (Tables)	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Reconciliation of Revenues and Income from Segments to Consolidated	Asset information by segment is not presented, as this measure is not used by the chief operating decision maker to assess the Company’s performance. The Company’s reportable segment information is presented below: Year Ended December 31, (in millions) 2021 2020 2019 Revenues Technology & Analytics Solutions $ 5,534 $ 4,858 $ 4,486 Research & Development Solutions 7,556 5,760 5,788 Contract Sales & Medical Solutions 784 741 814 Total revenues 13,874 11,359 11,088 Costs of revenue, exclusive of depreciation and amortization Technology & Analytics Solutions 3,278 2,900 2,663 Research & Development Solutions 5,303 3,974 3,936 Contract Sales & Medical Solutions 652 626 701 Total costs of revenue 9,233 7,500 7,300 Selling, general and administrative expenses Technology & Analytics Solutions 798 742 722 Research & Development Solutions 777 738 711 Contract Sales & Medical Solutions 57 58 61 General corporate and unallocated 332 251 240 Total selling, general and administrative expenses 1,964 1,789 1,734 Segment profit Technology & Analytics Solutions 1,458 1,216 1,101 Research & Development Solutions 1,476 1,048 1,141 Contract Sales & Medical Solutions 75 57 52 Total segment profit 3,009 2,321 2,294 General corporate and unallocated (332) (251) (240) Depreciation and amortization (1,264) (1,287) (1,202) Restructuring costs (20) (52) (75) Total income from operations $ 1,393 $ 731 $ 777

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Reconciles the Basic to Diluted Weighted Average Shares Outstanding	The following table reconciles the basic to diluted weighted average shares outstanding: Year Ended December 31, (in millions, except per share data) 2021 2020 2019 Numerator: Net income attributable to IQVIA Holdings Inc. $ 966 $ 279 191 Denominator: Basic weighted average common shares outstanding 191.4 191.3 195.1 Effect of dilutive stock options and share awards 3.6 3.7 4.5 Diluted weighted average common shares outstanding 195.0 195.0 199.6 Earnings per share attributable to common stockholders: Basic $ 5.05 $ 1.46 $ 0.98 Diluted $ 4.95 $ 1.43 $ 0.96

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive (Loss) Income (Tables)	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Summary of Components of AOCI	Below is a summary of the components of AOCI: (in millions) Foreign Currency Translation Derivative Instrument Defined Benefit Plans Income Taxes Total Balance as of December 31, 2018 $ (419) $ (1) $ 19 $ 177 $ (224) Other comprehensive loss before reclassifications (11) (19) (35) (21) (86) Reclassification adjustments — (1) — — (1) Balance as of December 31, 2019 (430) (21) (16) 156 (311) Other comprehensive income (loss) before reclassifications 35 (40) (69) 170 96 Reclassification adjustments — 13 — (3) 10 Balance as of December 31, 2020 (395) (48) (85) 323 (205) Other comprehensive (loss) income before reclassifications (165) 11 90 (139) (203) Reclassification adjustments — 16 — (4) 12 Acquisition of Quest's non-controlling interest (10) — — — (10) Balance as of December 31, 2021 $ (570) $ (21) $ 5 $ 180 $ (406)
Summary of Adjustments for (Gains) Losses Reclassified from AOCI into Condensed Consolidated Statements of Income and Affected Financial Statement Line Item	Below is a summary of the effects on net income of amounts reclassified from AOCI into the consolidated statements of income and the affected financial statement line item: Year Ended December 31, (in millions) Affected Financial Statement Line Item 2021 2020 2019 Derivative instruments: Interest rate swaps Interest expense $ (21) $ (13) $ — Foreign exchange forward contracts Revenues 5 1 (5) Foreign exchange forward contracts Other income, net — (1) 6 Total before income taxes (16) (13) 1 Income taxes (4) (3) — Total net of income taxes $ (12) $ (10) $ 1

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2021
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	The following table presents the Company’s supplemental cash flow information: Year Ended December 31, (in millions) 2021 2020 2019 Supplemental Cash Flow Information: Interest paid $ 343 $ 399 $ 421 Income taxes paid, net of refunds $ 222 $ 209 $ 215

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail) Employee in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)EmployeeCountry	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Summary Of Significant Accounting Policies
Number of employees | Employee	79
Capitalized and amortized expense related to software and related assets	$ 211,000,000	$ 267,000,000	$ 196,000,000
Impairment charges recognized	$ 0	$ 0	$ 0
Minimum
Summary Of Significant Accounting Policies
Number of countries | Country	100
Subscription arrangements terms	1 year
Maximum
Summary Of Significant Accounting Policies
Subscription arrangements terms	3 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Property and Equipment at Cost Using Straight-Line Method (Detail)	12 Months Ended
	Dec. 31, 2021
Buildings and leasehold improvements | Minimum
Property, Plant and Equipment
Property and equipment, Estimated useful life, Years	3 years
Buildings and leasehold improvements | Maximum
Property, Plant and Equipment
Property and equipment, Estimated useful life, Years	40 years
Equipment | Minimum
Property, Plant and Equipment
Property and equipment, Estimated useful life, Years	3 years
Equipment | Maximum
Property, Plant and Equipment
Property and equipment, Estimated useful life, Years	10 years
Furniture and fixtures | Minimum
Property, Plant and Equipment
Property and equipment, Estimated useful life, Years	5 years
Furniture and fixtures | Maximum
Property, Plant and Equipment
Property and equipment, Estimated useful life, Years	10 years
Transportation equipment | Minimum
Property, Plant and Equipment
Property and equipment, Estimated useful life, Years	3 years
Transportation equipment | Maximum
Property, Plant and Equipment
Property and equipment, Estimated useful life, Years	20 years

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Definite-lived identifiable intangible assets amortized (Detail)	12 Months Ended
	Dec. 31, 2021
Trademarks and trade names | Minimum
Finite-Lived Intangible Assets
Definite-lived intangible assets, Estimated useful life, Years	1 year
Trademarks and trade names | Maximum
Finite-Lived Intangible Assets
Definite-lived intangible assets, Estimated useful life, Years	17 years
Contract backlog and client relationships | Minimum
Finite-Lived Intangible Assets
Definite-lived intangible assets, Estimated useful life, Years	1 year
Contract backlog and client relationships | Maximum
Finite-Lived Intangible Assets
Definite-lived intangible assets, Estimated useful life, Years	25 years
Software and related assets | Minimum
Finite-Lived Intangible Assets
Definite-lived intangible assets, Estimated useful life, Years	1 year
Software and related assets | Maximum
Finite-Lived Intangible Assets
Definite-lived intangible assets, Estimated useful life, Years	10 years
Databases | Minimum
Finite-Lived Intangible Assets
Definite-lived intangible assets, Estimated useful life, Years	1 year
Databases | Maximum
Finite-Lived Intangible Assets
Definite-lived intangible assets, Estimated useful life, Years	9 years
Non-compete agreements and other | Minimum
Finite-Lived Intangible Assets
Definite-lived intangible assets, Estimated useful life, Years	2 years
Non-compete agreements and other | Maximum
Finite-Lived Intangible Assets
Definite-lived intangible assets, Estimated useful life, Years	5 years

Revenues by Geography, Concen_3

Revenues by Geography, Concentration of Credit Risk and Remaining Performance Obligations - Summary of Revenues by Geographical Region and Reportable Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue
Total revenues	$ 13,874	$ 11,359	$ 11,088
Americas
Disaggregation of Revenue
Total revenues	6,848	5,419	5,462
Europe and Africa
Disaggregation of Revenue
Total revenues	4,357	3,695	3,477
Asia-Pacific
Disaggregation of Revenue
Total revenues	2,669	2,245	2,149
Technology & Analytics Solutions
Disaggregation of Revenue
Total revenues	5,534	4,858	4,486
Technology & Analytics Solutions | Americas
Disaggregation of Revenue
Total revenues	2,610	2,413	2,370
Technology & Analytics Solutions | Europe and Africa
Disaggregation of Revenue
Total revenues	2,282	1,844	1,543
Technology & Analytics Solutions | Asia-Pacific
Disaggregation of Revenue
Total revenues	642	601	573
Research & Development Solutions
Disaggregation of Revenue
Total revenues	7,556	5,760	5,788
Research & Development Solutions | Americas
Disaggregation of Revenue
Total revenues	3,887	2,680	2,693
Research & Development Solutions | Europe and Africa
Disaggregation of Revenue
Total revenues	1,899	1,667	1,734
Research & Development Solutions | Asia-Pacific
Disaggregation of Revenue
Total revenues	1,770	1,413	1,361
Contract Sales & Medical Solutions
Disaggregation of Revenue
Total revenues	784	741	814
Contract Sales & Medical Solutions | Americas
Disaggregation of Revenue
Total revenues	351	326	399
Contract Sales & Medical Solutions | Europe and Africa
Disaggregation of Revenue
Total revenues	176	184	200
Contract Sales & Medical Solutions | Asia-Pacific
Disaggregation of Revenue
Total revenues	$ 257	$ 231	$ 215

Revenues by Geography, Concen_4

Revenues by Geography, Concentration of Credit Risk and Remaining Performance Obligations - Credit Risk (Detail) - Geographic Concentration Risk - Revenue	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
United States
Disaggregation of Revenue
Concentration risk	34.00%	35.00%	45.00%
United Kingdom
Disaggregation of Revenue
Concentration risk		10.00%	10.00%

Revenues by Geography, Concen_5

Revenues by Geography, Concentration of Credit Risk and Remaining Performance Obligations - Future Obligations (Detail) $ in Billions	Dec. 31, 2021USD ($)
Disaggregation of Revenue
Revenue expected to be recognized in future from remaining performance obligations	$ 27.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Disaggregation of Revenue
Percentage of remaining performance obligations on which revenue is expected to be recognized	35.00%
Unearned income recognition period	12 months

Trade Accounts Receivable, Un_3

Trade Accounts Receivable, Unbilled Services and Unearned Income - Trade Accounts Receivable and Unbilled Services (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Billed	$ 1,275	$ 1,181
Unbilled services	1,309	1,263
Trade accounts receivable and unbilled services	2,584	2,444
Allowance for doubtful accounts	(33)	(34)
Trade accounts receivable and unbilled services, net	$ 2,551	$ 2,410

Trade Accounts Receivable, Un_4

Trade Accounts Receivable, Unbilled Services and Unearned Income - Schedule of Net Contract Assets (Liabilities) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)
Unbilled services
Unbilled services, beginning balance	$ 1,263
Change	46
Unbilled services, ending balance	1,309
Unearned income
Unearned income, beginning balance	(1,252)
Change	(573)
Unearned income, ending balance	(1,825)
Net balance, beginning balance	11
Decrease of net balance of unbilled services and unearned income	(527)
Net balance, ending balance	$ (516)

Trade Accounts Receivable, Un_5

Trade Accounts Receivable, Unbilled Services and Unearned Income - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)
Receivables [Abstract]
Unbilled receivables (percentage)	62.00%
Contract assets (percentage)	38.00%
Increase in unbilled services	$ 46
Increase in unearned income	573
Decrease of net balance of unbilled services and unearned income	$ (527)

Investments - Investments in an

Investments - Investments in and Advances to Unconsolidated Affiliates (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Investments in and Advances to Affiliates
Investments in unconsolidated affiliates	$ 88	$ 84
NQ Fund III
Investments in and Advances to Affiliates
Investments in unconsolidated affiliates	7	7
NQ Fund IV
Investments in and Advances to Affiliates
Investments in unconsolidated affiliates	12	8
NQ Fund V
Investments in and Advances to Affiliates
Investments in unconsolidated affiliates	22	17
NQ PE Fund I
Investments in and Advances to Affiliates
Investments in unconsolidated affiliates	7	3
NostraData Pty Ltd. (“NostraData”)
Investments in and Advances to Affiliates
Investments in unconsolidated affiliates	18	18
Inteliquet (“Inteliquet”)
Investments in and Advances to Affiliates
Investments in unconsolidated affiliates	0	16
Helparound ("Helparound")
Investments in and Advances to Affiliates
Investments in unconsolidated affiliates	3	3
Longwood Fund V, L.P. ("Longwood")
Investments in and Advances to Affiliates
Investments in unconsolidated affiliates	3	1
Other
Investments in and Advances to Affiliates
Investments in unconsolidated affiliates	$ 16	$ 11

Investments - Summary of Invest

Investments - Summary of Investments in Unconsolidated Variable Interest Entities and Estimated Maximum Exposure to Loss (Detail) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Variable Interest Entity
Investments in Unconsolidated VIEs	$ 24,689,000,000	$ 24,564,000,000
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity
Investments in Unconsolidated VIEs	56,000,000
Maximum Exposure to Loss	104,000,000
Variable Interest Entity, Not Primary Beneficiary | NQ Fund III
Variable Interest Entity
Investments in Unconsolidated VIEs	7,000,000
Maximum Exposure to Loss	12,000,000
Variable Interest Entity, Not Primary Beneficiary | NQ Fund IV
Variable Interest Entity
Investments in Unconsolidated VIEs	12,000,000
Maximum Exposure to Loss	14,000,000
Variable Interest Entity, Not Primary Beneficiary | NQ Fund V
Variable Interest Entity
Investments in Unconsolidated VIEs	22,000,000
Maximum Exposure to Loss	51,000,000
Variable Interest Entity, Not Primary Beneficiary | NQ PE Fund I
Variable Interest Entity
Investments in Unconsolidated VIEs	7,000,000
Maximum Exposure to Loss	8,000,000
Variable Interest Entity, Not Primary Beneficiary | Longwood
Variable Interest Entity
Investments in Unconsolidated VIEs	3,000,000
Maximum Exposure to Loss	10,000,000
Variable Interest Entity, Not Primary Beneficiary | Other
Variable Interest Entity
Investments in Unconsolidated VIEs	5,000,000
Maximum Exposure to Loss	$ 9,000,000

Derivatives - Additional Inform

Derivatives - Additional Information (Detail) € in Millions	12 Months Ended
	Dec. 31, 2021USD ($)Country	Dec. 31, 2020USD ($)	Dec. 31, 2021EUR (€)Country	Jun. 04, 2020USD ($)	Mar. 27, 2020USD ($)	Dec. 31, 2019USD ($)	Jul. 19, 2018USD ($)interestRateSwap
Derivative Instruments and Hedging Activities Disclosures
Gains related to contracts	$ 0	$ 5,000,000
Losses related to contracts	3,000,000	0
Foreign exchange losses related to net investment hedge	475,000,000	(561,000,000)				$ 97,000,000
Foreign currency unrealized loss expected to be reclassified in the next 12 months	23,000,000
Foreign currency denominated debt
Derivative Instruments and Hedging Activities Disclosures
Borrowings, net of original issue discount	$ 5,929,000,000		€ 5,227
Minimum
Derivative Instruments and Hedging Activities Disclosures
Number of countries | Country	100		100
Foreign Exchange Risk
Derivative Instruments and Hedging Activities Disclosures
Notional amount	$ 110,000,000	$ 70,000,000
2018 Swaps
Derivative Instruments and Hedging Activities Disclosures
Notional amount							$ 500,000,000
Number of interest rate contracts | interestRateSwap							2
Derivative fixed interest rate							3.00%
Interest rate swaps
Derivative Instruments and Hedging Activities Disclosures
Notional amount				$ 300,000,000	$ 1,000,000,000
Derivative fixed interest rate				0.54%	0.56%
Interest rate swap, fixed interest rate debt percent	63.00%		63.00%
Interest rate swaps, variable rate debt percent	37.00%		37.00%

Derivatives - Summary of Fair V

Derivatives - Summary of Fair Values of Derivative Instruments Designated as Hedges (Detail) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Jun. 04, 2020	Mar. 27, 2020
Derivatives, Fair Value
Assets	$ 4,000,000	$ 5,000,000
Liabilities	27,000,000	56,000,000
Interest rate swaps
Derivatives, Fair Value
Notional			$ 300,000,000	$ 1,000,000,000
Derivatives designated as hedging instruments: | Other current assets and liabilities | Foreign exchange forward contracts
Derivatives, Fair Value
Assets	0	5,000,000
Liabilities	3,000,000	0
Notional	110,000,000	70,000,000
Derivatives designated as hedging instruments: | Other assets and liabilities | Interest rate swaps
Derivatives, Fair Value
Assets	4,000,000	0
Liabilities	24,000,000	55,000,000
Notional	1,800,000,000	1,800,000,000
Derivatives not designated as hedging instruments: | Other liabilities | Interest rate swaps
Derivatives, Fair Value
Assets	0	0
Liabilities	0	1,000,000
Notional	$ 0	$ 356,000,000

Derivatives - Pre-tax Effect of

Derivatives - Pre-tax Effect of Cash Flow Hedging Instruments on Other Comprehensive (Loss) Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosures
Effect of cash flow hedging instruments on other comprehensive income (loss)	$ 27	$ (27)	$ (20)
Foreign exchange forward contracts
Derivative Instruments and Hedging Activities Disclosures
Effect of cash flow hedging instruments on other comprehensive income (loss)	(8)	1	2
Interest rate derivatives
Derivative Instruments and Hedging Activities Disclosures
Effect of cash flow hedging instruments on other comprehensive income (loss)	$ 35	$ (28)	$ (22)

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Percentage accrued of maximum consideration payments to become payable	72.00%
Identifiable intangible assets	$ 4,943	$ 5,205
Level 1 and Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value of total debt	12,255	$ 12,746
Level 3 | Non-recurring Fair Value Measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total	18,374
Cost and equity method investments	130
Goodwill	13,301
Identifiable intangible assets	$ 4,943

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value of Financial Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets:
Marketable securities	$ 111	$ 88
Derivatives	4	5
Recurring
Assets:
Marketable securities	145	122
Derivatives	4	5
Total	149	127
Liabilities:
Derivatives	27	56
Contingent consideration	76	119
Total	103	175
Level 1 | Recurring
Assets:
Marketable securities	145	122
Derivatives	0	0
Total	145	122
Liabilities:
Derivatives	0	0
Contingent consideration	0	0
Total	0	0
Level 2 | Recurring
Assets:
Marketable securities	0	0
Derivatives	4	5
Total	4	5
Liabilities:
Derivatives	27	56
Contingent consideration	0	0
Total	27	56
Level 3 | Recurring
Assets:
Marketable securities	0	0
Derivatives	0	0
Total	0	0
Liabilities:
Derivatives	0	0
Contingent consideration	76	119
Total	$ 76	$ 119

Fair Value Measurements - Chang

Fair Value Measurements - Changes in Level 3 Financial Assets and Liabilities Measured on Recurring Basis (Detail) - Contingent Consideration - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation
Balance as of January 1	$ 119	$ 113	$ 123
Business combinations	39	47	40
Contingent consideration paid	(39)	(22)	(46)
Revaluations included in earnings and foreign currency translation adjustments	(43)	(19)	(4)
as of December 31	$ 76	$ 119	$ 113

Property and Equipment - Summar

Property and Equipment - Summary of Major Classes of Property and Equipment (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment
Property and equipment, gross	$ 1,262	$ 1,155
Less accumulated depreciation	(765)	(673)
Property and equipment, net	497	482
Land, buildings and leasehold improvements
Property, Plant and Equipment
Property and equipment, gross	376	351
Equipment
Property, Plant and Equipment
Property and equipment, gross	745	657
Furniture and fixtures
Property, Plant and Equipment
Property and equipment, gross	72	76
Transportation equipment
Property, Plant and Equipment
Property and equipment, gross	$ 69	$ 71

Property and Equipment -Schedul

Property and Equipment -Schedule of Property and Equipment Depreciation Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 147	$ 134	$ 128

Goodwill and Identifiable Int_3

Goodwill and Identifiable Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Identifiable intangible assets	$ 4,943,000,000	$ 5,205,000,000
Estimated amortization expense, 2022	826,000,000
Estimated amortization expense, 2023	748,000,000
Estimated amortization expense, 2024	651,000,000
Estimated amortization expense, 2025	546,000,000
Estimated amortization expense, 2026	409,000,000
Goodwill impairment losses	$ 0	$ 0	$ 0

Goodwill and Identifiable Int_4

Goodwill and Identifiable Intangible Assets - Summary of Amortization Expense Associated with Identifiable Definite-Lived Intangible Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 1,117	$ 1,153	$ 1,074

Goodwill and Identifiable Int_5

Goodwill and Identifiable Intangible Assets - Summary of Identifiable Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Definite-lived other identifiable intangible assets:
Gross Amount	$ 10,286	$ 9,706
Accumulated Amortization	(5,343)	(4,519)
Net Amount	4,943	5,187
Trade name
Definite-lived other identifiable intangible assets:
Indefinite-lived other identifiable intangible assets:	0	18
Client relationships and backlog
Definite-lived other identifiable intangible assets:
Gross Amount	5,193	5,095
Accumulated Amortization	(2,024)	(1,745)
Net Amount	3,169	3,350
Trademarks, trade name and other
Definite-lived other identifiable intangible assets:
Gross Amount	550	544
Accumulated Amortization	(241)	(212)
Net Amount	309	332
Databases
Definite-lived other identifiable intangible assets:
Gross Amount	1,889	1,930
Accumulated Amortization	(1,853)	(1,629)
Net Amount	36	301
Software and related assets
Definite-lived other identifiable intangible assets:
Gross Amount	2,637	2,109
Accumulated Amortization	(1,213)	(915)
Net Amount	1,424	1,194
Non-compete agreements
Definite-lived other identifiable intangible assets:
Gross Amount	17	28
Accumulated Amortization	(12)	(18)
Net Amount	$ 5	$ 10

Goodwill and Identifiable Int_6

Goodwill and Identifiable Intangible Assets - Summary of Goodwill by Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill
Beginning Balance	$ 12,654	$ 12,159
Business combinations	1,060	115
Impact of foreign currency fluctuations and other	(413)	380
Ending Balance	13,301	12,654
Technology & Analytics Solutions
Goodwill
Beginning Balance	10,864	10,374
Business combinations	874	86
Impact of foreign currency fluctuations and other	(401)	404
Ending Balance	11,337	10,864
Research & Development Solutions
Goodwill
Beginning Balance	1,646	1,646
Business combinations	160	29
Impact of foreign currency fluctuations and other	(4)	(29)
Ending Balance	1,802	1,646
Contract Sales & Medical Solutions
Goodwill
Beginning Balance	144	139
Business combinations	26	0
Impact of foreign currency fluctuations and other	(8)	5
Ending Balance	$ 162	$ 144

Accrued Expenses - Accrued Expe

Accrued Expenses - Accrued Expenses (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Compensation, including bonuses, fringe benefits and payroll taxes	$ 946	$ 852
Restructuring	30	53
Interest	56	55
Client contract related	884	849
Professional fees	102	92
Contingent consideration and deferred purchase price	31	59
Other	311	272
Total	$ 2,360	$ 2,232

Credit Arrangements - Summary o

Credit Arrangements - Summary of Credit Facilities (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Aug. 13, 2021	Aug. 12, 2021
Revolving credit facility
Line of Credit Facility
Interest Rate Description	LIBOR in the relevant currency borrowed plus a margin of 1.25% as of December 31, 2021
USD Revolving Credit Facility | Revolving credit facility
Line of Credit Facility
Facility	$ 1,500,000,000
USD Revolving Credit Facility | Revolving credit facility | LIBOR
Line of Credit Facility
Rate	1.25%
Receivables financing facility due 2024—U.S. Dollar LIBOR at average floating rates of 1.00%
Line of Credit Facility
Interest Rate Description	LIBOR Market Index Rate (0.10% as of December 31, 2021) plus 0.90%
Facility		$ 550,000,000	$ 300,000,000
Receivables financing facility due 2024—U.S. Dollar LIBOR at average floating rates of 1.00% | Line of Credit
Line of Credit Facility
Facility	$ 110,000,000
Rate	0.10%
Receivables financing facility due 2024—U.S. Dollar LIBOR at average floating rates of 1.00% | Line of Credit | LIBOR
Line of Credit Facility
Interest rate spread on base rate	0.90%

Credit Arrangements - Summary_2

Credit Arrangements - Summary of Debt (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)	Mar. 03, 2021EUR (€)	Dec. 31, 2020USD ($)	Jun. 24, 2020EUR (€)
Senior Secured Credit Facilities:
Principal amount of debt	$ 12,185		$ 12,600
Less: unamortized discount and debt issuance costs	(60)		(67)
Less: current portion	(91)		(149)
Long-term debt, less current portion	$ 12,034		12,384
Due in 2028 | 2.875% Senior Notes | Senior Notes
Senior Secured Credit Facilities:
Principal amount of debt | €				€ 711,000,000
Rate	2.875%
USD | Revolving credit facility | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	$ 100		0
Average floating rate	1.35%
USD | Due in 2022 | Receivables Financing Facility | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	$ 0		240
USD | Due in 2023 | Senior Secured Facilities, Term A Loan | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	0		728
USD | Due in 2023 | Senior Secured Facilities, Term A Loan 2 | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	0		766
USD | Due in 2024 | Senior Secured Facilities, Term B Loan | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	$ 510		535
Average floating rate	1.85%
USD | Due in 2024 | Senior Secured Additional Term B Loan | LIBOR
Senior Secured Credit Facilities:
Average floating rate	1.00%
USD | Due in 2024 | Receivables Financing Facility | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	$ 550		0
USD | Due in 2025 | Senior Secured Facilities, Term B Loan | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	$ 670		726
Average floating rate	1.85%
USD | Due in 2025 | Senior Secured Additional Term B Loan | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	$ 860		926
Average floating rate	1.97%
USD | Due in 2026 | Senior Secured Term A Loan At One Point Thirty Three Percent | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	$ 1,415		0
Average floating rate	1.47%
USD | Due in 2026 | Senior Secured Term A Loan At One Point Twenty Five Pecent | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	$ 351		0
USD | Due in 2026 | 5.0% Senior Notes | Senior Notes
Senior Secured Credit Facilities:
Principal amount of debt	$ 1,050		1,050
Rate	5.00%
USD | Due in 2027 | 5.0% Senior Notes | Senior Notes
Senior Secured Credit Facilities:
Principal amount of debt	$ 1,100		1,100
Rate	5.00%
EUR | Senior Notes
Senior Secured Credit Facilities:
Principal amount of debt | €		€ 1,450,000,000
EUR | Due in 2023 | Senior Secured Facilities, Term A Loan | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	$ 0		400
EUR | Due in 2024 | Senior Secured Facilities, Term B Loan | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	$ 1,242		1,413
Average floating rate	2.00%
EUR | Due in 2025 | Senior Secured Additional Term B Loan | LIBOR
Senior Secured Credit Facilities:
Principal amount of debt	$ 592		697
Average floating rate	2.00%
EUR | Due in 2025 | 2.875% Senior Notes | Senior Notes
Senior Secured Credit Facilities:
Principal amount of debt	$ 476		515
Rate	2.875%
EUR | Due in 2025 | 3.25% Senior Notes due 2025—Euro denominated | Senior Notes
Senior Secured Credit Facilities:
Principal amount of debt	$ 0		1,748
Rate	3.25%
EUR | Due in 2026 | Senior Secured Term A Loan At One Point Twenty Five Pecent | LIBOR
Senior Secured Credit Facilities:
Average floating rate	1.25%
EUR | Due in 2026 | 1.75% Senior Notes due 2026 | Senior Notes
Senior Secured Credit Facilities:
Principal amount of debt	$ 624	550,000,000	0
Rate	1.75%
EUR | Due in 2028 | 2.875% Senior Notes | Senior Notes
Senior Secured Credit Facilities:
Principal amount of debt	$ 807		872
Rate	2.875%
EUR | Due in 2028 | 2.250% Senior Notes due 2029—Euro denominated | Senior Notes
Senior Secured Credit Facilities:
Principal amount of debt	$ 817		883
Rate	2.25%
EUR | Due in 2029 | 2.250% Senior Notes due 2029—Euro denominated | Senior Notes
Senior Secured Credit Facilities:
Principal amount of debt	$ 1,021	€ 900,000,000	$ 0
Rate	2.25%

Credit Arrangements - Contractu

Credit Arrangements - Contractual Maturities of Long-term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Contractual Maturities
2022	$ 91
2023	91
2024	2,392
2025	2,690
2026	3,178
Thereafter	3,743
Principal amount of debt	$ 12,185	$ 12,600

Credit Arrangements - Senior Cr

Credit Arrangements - Senior Credit Facilities (Details) - USD ($)	Sep. 14, 2021	Aug. 25, 2021	Mar. 11, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Loss on extinguishment of debt				$ 26,000,000	$ 13,000,000	$ 24,000,000
Principal amount of debt				12,185,000,000	12,600,000,000
Repayment of debt				2,091,000,000	864,000,000	$ 899,000,000
Senior Secured Facilities, Term A Loan
Debt Instrument [Line Items]
Loss on extinguishment of debt		$ 2,000,000
Senior Secured Facilities, Term B Loan
Debt Instrument [Line Items]
Repayments of debt	$ 250,000,000
Senior Secured Credit Facilities
Debt Instrument [Line Items]
Facility				7,140,000,000	7,692,000,000
Principal amount of debt				5,740,000,000	6,192,000,000
Available borrowing capacity				1,400,000,000	1,496,000,000
Current borrowing capacity				1,500,000,000
Senior Secured Credit Facilities | Standby Letters of Credit
Debt Instrument [Line Items]
Available borrowing capacity					$ 4,000,000
Senior Secured Credit Facilities, Available in US Dollars, Euro, Swiss Francs, And Other Foreign Currencies
Debt Instrument [Line Items]
Current borrowing capacity				600,000,000
Senior Secured Credit Facilities, Available in US Dollars, Euro, Swiss Francs, And Other Foreign Currencies | USD
Debt Instrument [Line Items]
Current borrowing capacity				675,000,000
Senior Secured Credit Facilities, Available In US Dollars And Yen
Debt Instrument [Line Items]
Current borrowing capacity				$ 225,000,000
TLA - 2 Loans | Secured Debt
Debt Instrument [Line Items]
Facility			$ 900,000,000
Repayment of debt			$ 100,000,000
TLA - 2 Loans | Secured Debt | LIBOR
Debt Instrument [Line Items]
Interest rate spread on base rate			1.00%
TLA - 2 Loans | Secured Debt | Minimum | LIBOR
Debt Instrument [Line Items]
Interest rate spread on base rate			1.50%
TLA - 2 Loans | Secured Debt | Maximum | LIBOR
Debt Instrument [Line Items]
Interest rate spread on base rate			2.25%

Credit Arrangements - Senior No

Credit Arrangements - Senior Notes (Details) $ in Millions	Mar. 03, 2021EUR (€)	Jun. 24, 2020EUR (€)	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Debt Instrument [Line Items]
Principal amount of debt			$ 12,185	$ 12,600
Loss on extinguishment of debt			26	13	$ 24
Senior Notes | 1.75% Senior Notes due 2026 | Due in 2026
Debt Instrument [Line Items]
Redemption premium percentage	0.875%
Debt Instrument, Redemption Premium Percentage, Early Redemption Rate	0.00%
Senior Notes | 2.250% Senior Notes due 2029—Euro denominated | Due in 2029
Debt Instrument [Line Items]
Redemption premium percentage	1.125%
Debt Instrument, Redemption Premium Percentage, Early Redemption Rate	0.00%
Senior Notes | 3.25% Senior Notes due 2025—Euro denominated | Due in 2025
Debt Instrument [Line Items]
Loss on extinguishment of debt			$ 24
Senior Notes | 2.875% Senior Notes | Due in 2028
Debt Instrument [Line Items]
Principal amount of debt | €		€ 711,000,000
Rate			2.875%
Senior Notes | 2.875% Senior Notes | Due in 2028 | Maximum
Debt Instrument [Line Items]
Redemption premium percentage		1.438%
Senior Notes | 2.875% Senior Notes | Due in 2028 | Minimum
Debt Instrument [Line Items]
Redemption premium percentage		0.00%
EUR | Senior Notes
Debt Instrument [Line Items]
Principal amount of debt | €	€ 1,450,000,000
EUR | Senior Notes | 1.75% Senior Notes due 2026 | Due in 2026
Debt Instrument [Line Items]
Principal amount of debt	550,000,000		$ 624	0
Rate			1.75%
EUR | Senior Notes | 2.250% Senior Notes due 2029—Euro denominated | Due in 2029
Debt Instrument [Line Items]
Principal amount of debt	€ 900,000,000		$ 1,021	0
Rate			2.25%
EUR | Senior Notes | 2.250% Senior Notes due 2029—Euro denominated | Due in 2028
Debt Instrument [Line Items]
Principal amount of debt			$ 817	883
Rate			2.25%
EUR | Senior Notes | 3.25% Senior Notes due 2025—Euro denominated | Due in 2025
Debt Instrument [Line Items]
Principal amount of debt			$ 0	1,748
Rate			3.25%
EUR | Senior Notes | 2.875% Senior Notes | Due in 2025
Debt Instrument [Line Items]
Principal amount of debt			$ 476	515
Rate			2.875%
EUR | Senior Notes | 2.875% Senior Notes | Due in 2028
Debt Instrument [Line Items]
Principal amount of debt			$ 807	$ 872
Rate			2.875%
EUR | Senior Notes | 2.25% Senior Notes due 2028—Euro denominated | Due in 2028
Debt Instrument [Line Items]
Rate			3.50%

Credit Arrangements - Receivabl

Credit Arrangements - Receivables Financing Facility (Details) - USD ($) $ in Millions	Aug. 13, 2021	Aug. 12, 2021
Receivables financing facility due 2024—U.S. Dollar LIBOR at average floating rates of 1.00%
Debt Instrument [Line Items]
Facility	$ 550	$ 300
Accounts Receivable Financing Facility, Term Loan | Bankruptcy-remote Special Purpose Entity ("SPE")
Debt Instrument [Line Items]
Long-term Line of Credit	440
Accounts Receivable Financing Facility, Revolving Loan Commitment | Bankruptcy-remote Special Purpose Entity ("SPE")
Debt Instrument [Line Items]
Long-term Line of Credit	$ 110

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description
Total lease cost	$ 194	$ 215	$ 193
Selling, general and administrative expenses
Lessee, Lease, Description
Operating lease cost	184	209	193
Depreciation and amortization, and Interest expense
Lessee, Lease, Description
Finance Lease Costs	$ 10	$ 6	$ 0

Leases - Other Information Rela

Leases - Other Information Related to Leases (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 175	$ 211	$ 195
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	81	109	$ 96
Finance leases	$ 44	$ 119
Weighted Average Remaining Lease Term:
Operating leases	4 years 6 months 10 days	4 years 6 months 29 days	5 years 3 days
Finance leases	21 years 3 months 10 days	24 years
Weighted Average Discount Rate:
Operating leases	3.36%	3.78%	4.22%
Finance leases	2.70%	3.18%

Leases - Future Minimum Lease P

Leases - Future Minimum Lease Payments Under Non-cancellable Leases (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Operating Leases
2022	$ 143
2023	114
2024	86
2025	70
2026	33
Thereafter	48
Total future minimum lease payments	494
Less imputed interest	(41)
Total	453
Other current liabilities	$ 140
Operating Lease, Liability, Current, Statement of Financial Position	Other current liabilities
Operating lease liabilities	$ 313	$ 371
Total	453
Finance Leases
2022	10
2023	10
2024	10
2025	10
2026	10
Thereafter	201
Total future minimum lease payments	251
Less imputed interest	(65)
Total	186
Other current liabilities	$ 9
Finance Lease, Liability, Current, Statement of Financial Position	Other current liabilities
Other liabilities	$ 177
Finance Lease, Liability, Noncurrent, Statement of Financial Position	Other liabilities
Total	$ 186

Contingencies - Additional Info

Contingencies - Additional Information (Detail)	May 24, 2019medical_doctor	Sep. 11, 2017medical_doctor	Sep. 11, 2017private_individual	Mar. 13, 2017USD ($)	Feb. 23, 2015employeesprivate_individual	Feb. 13, 2014medical_doctor	Feb. 13, 2014private_individual	Feb. 13, 2014Defendant
KPIC
Loss Contingencies
Number of plaintiffs	247	280	200			1,200	900
Number of defendants | Defendant								2
Seoul Central District Prosecutors
Loss Contingencies
Number of plaintiffs | private_individual					24
Number of defendants | employees					2
Minimum | Veeva
Loss Contingencies
Amount of damages claimed | $				$ 200,000,000

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	Feb. 10, 2022	Apr. 01, 2021	Feb. 13, 2020	Aug. 31, 2019	Mar. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Oct. 30, 2013
Class of Stock
Preferred stock, authorized (shares)						1,000,000
Preferred stock, par value (usd per share)						$ 0.01
Preferred stock, shares issued (shares)						0	0
Preferred stock, shares outstanding (shares)						0	0
Repurchase of stock, value						$ 406,000,000	$ 433,000,000	$ 963,000,000
Common stock, par value (usd per share)						$ 0.01	$ 0.01
Quest | Q2 Solutions
Class of Stock
Percentage of voting interest acquired		40.00%
Voting interest acquired, consideration		$ 758,000,000
Q2 Solutions | Quest
Class of Stock
Percentage of Quest's non-controlling interest in Q2 Solutions		100.00%
Secondary Public Offering
Class of Stock
Common stock held by Selling Stockholders underwritten (shares)					5,000,000
Repurchase of stock (shares)					1,000,000
Repurchase of stock, value					$ 140,800,000
Equity Repurchase Program
Class of Stock
Equity repurchase program authorized amount													$ 125,000,000
Equity repurchase program increase in authorized amount								$ 2,000,000,000	$ 1,500,000,000	$ 2,000,000,000	$ 1,500,000,000	$ 600,000,000
Equity available for repurchase under the repurchase program						$ 500,000,000
Equity Repurchase Program | Subsequent Event
Class of Stock
Equity repurchase program authorized amount	$ 9,725,000,000
Equity repurchase program increase in authorized amount	2,000,000,000
Equity available for repurchase under the repurchase program	$ 2,500,000,000
Other Equity Repurchases
Class of Stock
Common stock held by Selling Stockholders underwritten (shares)			5,000,000	5,000,000
Aggregate number of shares authorized to be repurchased (shares)			1,000,000	1,000,000
Common stock, par value (usd per share)			$ 0.01	$ 0.01
Common stock sold by Selling Stockholders underwritten (shares)			4,000,000	4,000,000

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Share Repurchases Made Both Under and Outside of Repurchase Program (Detail) - Equity Repurchase Under and Outside of Repurchase Program - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Class of Stock
Number of shares of common stock repurchased (in shares)	1.7	2.7	6.6
Aggregate purchase price	$ 395	$ 423	$ 945
Average price per share (in usd per share)	$ 238.22	$ 155.63	$ 143.02

Business Combinations - Schedul

Business Combinations - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets acquired:
Goodwill	$ 13,301	$ 12,654	$ 12,159
Several Individually Immaterial Acquisitions
Assets acquired:
Cash and cash equivalents	40	10
Other assets	75	22
Goodwill	1,060	115
Other identifiable intangibles	576	101
Liabilities assumed:
Other liabilities	(62)	(9)
Deferred income taxes, long-term	(147)	(5)
Net assets acquired	1,542	234
Contingent consideration and deferred payments	$ 44	$ 47

Business Combinations - Narrati

Business Combinations - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Several Individually Immaterial Acquisitions
Business Acquisition
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 503	$ 99

Business Combinations - Indefin

Business Combinations - Indefinite-Lived Intangible Assets Acquired as Part of Business Combination (Details) - Several Individually Immaterial Acquisitions - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition
Total Other identifiable intangibles	$ 576	$ 101
Customer relationships
Business Acquisition
Total Other identifiable intangibles	393	90
Non-compete agreements
Business Acquisition
Total Other identifiable intangibles	2	2
Software and related assets
Business Acquisition
Total Other identifiable intangibles	133	8
Trade name
Business Acquisition
Total Other identifiable intangibles	$ 31	1
Backlog
Business Acquisition
Amortization Period	2 years
Total Other identifiable intangibles	$ 17	$ 0
Minimum | Customer relationships
Business Acquisition
Amortization Period	10 years
Minimum | Non-compete agreements
Business Acquisition
Amortization Period	3 years
Minimum | Software and related assets
Business Acquisition
Amortization Period	3 years
Minimum | Trade name
Business Acquisition
Amortization Period	3 years
Maximum | Customer relationships
Business Acquisition
Amortization Period	18 years
Maximum | Non-compete agreements
Business Acquisition
Amortization Period	5 years
Maximum | Software and related assets
Business Acquisition
Amortization Period	8 years
Maximum | Trade name
Business Acquisition
Amortization Period	15 years

Restructuring - Additional Info

Restructuring - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
Restructuring costs	$ 20	$ 52	$ 75

Restructuring - Summary of Amou

Restructuring - Summary of Amounts Recorded for Restructuring Plans (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Restructuring Reserve
Restructuring reserves, beginning balance	$ 53	$ 67
Expense, net of reversals	20	52
Payments	(41)	(68)
Foreign currency translation and other	(2)	2
Restructuring reserves, ending balance	30	53
Severance and Related Costs
Restructuring Reserve
Restructuring reserves, beginning balance	51	64
Expense, net of reversals	20	52
Payments	(40)	(67)
Foreign currency translation and other	(1)	2
Restructuring reserves, ending balance	30	51
Exit Costs
Restructuring Reserve
Restructuring reserves, beginning balance	2	3
Expense, net of reversals	0	0
Payments	(1)	(1)
Foreign currency translation and other	(1)	0
Restructuring reserves, ending balance	$ 0	$ 2

Income Taxes - Components of In

Income Taxes - Components of Income Before Income Taxes and Equity in Earnings (Losses) of Unconsolidated Affiliates (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Examination
Total before income taxes	$ 1,128	$ 373	$ 352
Domestic
Income Tax Examination
Total before income taxes	(73)	(649)	(504)
Foreign
Income Tax Examination
Total before income taxes	$ 1,201	$ 1,022	$ 856

Income Taxes - Components of _2

Income Taxes - Components of Income Tax Expense Attributable to Continuing Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current expense:
Federal and state	$ 16	$ 0	$ 11
Foreign	293	244	248
Total	309	244	259
Deferred (benefit) expense:
Federal and state	(106)	(161)	(109)
Foreign	(40)	(11)	(34)
Total	(146)	(172)	(143)
Income tax expense (benefit)	$ 163	$ 72	$ 116

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Examination
Tax benefit related to FDII and GILTI tax credits	$ 29
Tax expense related to final regulation on foreign tax credits	9
Favorable tax impact		$ 26
Tax expense (benefit) related to FDII			$ (25)
Undistributed earnings of foreign subsidiaries	4,260
Increase (decrease) in valuation allowances	(12)
Valuation allowance	294	306
Gross unrecognized income tax benefits	116	118	120	$ 94
Addition/(Reduction) of interest and penalties recorded	0	3	$ 2
Accrued interest and penalties	19	$ 21
Federal, State And Foreign
Income Tax Examination
Tax credit and tax loss carryforwards, tax effect	631
Gross unrecognized income tax benefits	22
Foreign Tax
Income Tax Examination
Gross unrecognized income tax benefits	21
Indefinite Carryforward Period | Federal, State And Foreign
Income Tax Examination
Tax credit and tax loss carryforwards, tax effect	22
Earliest Tax Year | Federal, State And Foreign
Income Tax Examination
Tax credit and tax loss carryforwards, tax effect	$ 609

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Rate Reconciliation (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Federal income tax expense at statutory rate	$ 237	$ 78	$ 74
State and local income taxes, net of federal effect	2	19	0
Research and development	(14)	(14)	(21)
United States taxes recorded on foreign earnings	(29)	2	9
Tax contingencies	3	(5)	27
Foreign Derived Intangible Income (“FDII”)	(34)	(8)	20
Foreign rate differential	17	25	26
Equity compensation	(23)	(29)	(14)
Non-taxable gain on acquisition adjustment	0	6	(5)
Non-controlling interest	0	(5)	(6)
Other	4	3	6
Income tax expense (benefit)	$ 163	$ 72	$ 116

Income Taxes - Income Tax Effec

Income Taxes - Income Tax Effects of Temporary Differences from Continuing Operations that Give Rise to Significant Portions of Deferred Income Tax Assets (Liabilities) (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred income tax assets:
Net operating loss and capital loss carryforwards	$ 212	$ 231
Tax credit carryforwards	375	369
Accrued expenses and unearned income	59	54
Employee benefits	212	228
Lease liability	92	139
Foreign exchange on debt instruments	0	143
U.S. interest expense limitation	62	75
Other	64	64
Total deferred income tax assets	1,076	1,303
Valuation allowance for deferred income tax assets	(294)	(306)
Total deferred income tax assets (net of valuation allowance)	782	997
Deferred income tax liabilities:
Amortization and depreciation	(898)	(1,038)
Lease right-of-use assets	(81)	(133)
Foreign exchange on debt instruments	(36)	0
Other	(53)	(50)
Total deferred income tax liabilities	(1,068)	(1,221)
Net deferred income tax liabilities	$ (286)	$ (224)

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Beginning and Ending Amount of Gross Unrecognized Income Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits
Beginning balance	$ 118	$ 120	$ 94
Additions based on tax positions related to the current year	7	5	5
Additions for income tax positions of prior years	16	15	33
Impact of changes in exchange rates	(3)	3	0
Settlements with tax authorities	(2)	(2)	(1)
Reductions for income tax positions of prior years	(11)	(16)	(6)
Reductions due to the lapse of the applicable statute of limitations	(9)	(7)	(5)
Ending balance	$ 116	$ 118	$ 120

Income Taxes - Summary of Tax Y

Income Taxes - Summary of Tax Years Open for Examination (Detail)	12 Months Ended
	Dec. 31, 2021
United States | Earliest Tax Year
Schedule Of Income Taxes
Open tax year	2017
United States | Latest Tax Year
Schedule Of Income Taxes
Open tax year	2020
India | Earliest Tax Year
Schedule Of Income Taxes
Open tax year	2006
India | Latest Tax Year
Schedule Of Income Taxes
Open tax year	2021
Japan | Earliest Tax Year
Schedule Of Income Taxes
Open tax year	2019
Japan | Latest Tax Year
Schedule Of Income Taxes
Open tax year	2020
United Kingdom | Earliest Tax Year
Schedule Of Income Taxes
Open tax year	2019
United Kingdom | Latest Tax Year
Schedule Of Income Taxes
Open tax year	2020
Switzerland | Earliest Tax Year
Schedule Of Income Taxes
Open tax year	2016
Switzerland | Latest Tax Year
Schedule Of Income Taxes
Open tax year	2020

Employee Benefit Plans - Summar

Employee Benefit Plans - Summary of Changes in Benefit Obligation, Plan Assets and Funded Status of Pension Benefit Plans (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
United States
Change in plan assets:
Fair value of plan assets at beginning of year	$ 455
Business combinations	0
Fair value of plan assets at end of year	524	$ 455
Non-United States Plans
Change in plan assets:
Fair value of plan assets at beginning of year	475
Business combinations	3	0
Fair value of plan assets at end of year	494	475
Pension Benefits | United States
Change in benefit obligation:
Projected benefit obligation at beginning of year	481	401
Service costs	14	13	$ 12
Interest cost	11	12	14
Actuarial losses	(7)	65
Business combinations	0	0
Benefits paid	(11)	(10)
Contributions	0	0
Amendments	0	0
Settlements	0	0
Foreign currency fluctuations and other	0	0
Projected benefit obligation at end of year	488	481	401
Change in plan assets:
Fair value of plan assets at beginning of year	455	401
Actual return on plan assets	76	61
Contributions	4	3
Benefits paid	(11)	(10)
Settlements	0	0
Foreign currency fluctuations and other	0	0
Fair value of plan assets at end of year	524	455	401
Funded status	36	(26)
Pension Benefits | Non-United States Plans
Change in benefit obligation:
Projected benefit obligation at beginning of year	693	591
Service costs	29	29	25
Interest cost	6	8	9
Actuarial losses	(25)	60
Business combinations	4	0
Benefits paid	(23)	(18)
Contributions	2	2
Amendments	(2)	(1)
Settlements	(7)	(7)
Foreign currency fluctuations and other	(25)	29
Projected benefit obligation at end of year	652	693	591
Change in plan assets:
Fair value of plan assets at beginning of year	475	418
Actual return on plan assets	26	38
Contributions	26	27
Benefits paid	(23)	(18)
Settlements	(7)	(7)
Foreign currency fluctuations and other	(6)	17
Fair value of plan assets at end of year	494	475	$ 418
Funded status	$ (158)	$ (218)

Employee Benefit Plans - Summ_2

Employee Benefit Plans - Summary of Amounts Recognized in Consolidated Balance Sheets Related to the Pension Benefit Plans (Detail) - Pension Benefits - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
United States
Defined Benefit Plan Disclosure
Deposits and other assets	$ 83	$ 23
Accrued expenses	3	2
Other liabilities	44	47
United States | Actuarial Net (Gain) Loss
Defined Benefit Plan Disclosure
AOCI	29	(21)
Non-United States Plans
Defined Benefit Plan Disclosure
Deposits and other assets	39	7
Accrued expenses	10	15
Other liabilities	187	210
Non-United States Plans | Actuarial Net (Gain) Loss
Defined Benefit Plan Disclosure
AOCI	$ (24)	$ (65)

Employee Benefit Plans - Accumu

Employee Benefit Plans - Accumulated Benefit Obligation For Pension Benefit Plans (Detail) - Pension Benefits - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
United States
Defined Contribution And Defined Benefit Plans
Accumulated benefit obligation	$ 482	$ 474
Non-United States Plans
Defined Contribution And Defined Benefit Plans
Accumulated benefit obligation	$ 608	$ 654

Employee Benefit Plans - Summ_3

Employee Benefit Plans - Summary of Pension Plans with Accumulated Benefit Obligation in Excess of Plan Assets and Projected Benefit Obligations in Excess of Plan Assets (Detail) - Pension Benefits - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
United States
Defined Benefit Plan Disclosure
Accumulated benefit obligation	$ 50	$ 52
Fair value of plan assets	5	5
Projected benefit obligation	52	53
Fair value of plan assets	5	5
Non-United States Plans
Defined Benefit Plan Disclosure
Accumulated benefit obligation	222	572
Fair value of plan assets	67	384
Projected benefit obligation	282	610
Fair value of plan assets	$ 85	$ 386

Employee Benefit Plans - Compon

Employee Benefit Plans - Components of Net Periodic Benefit Cost and Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss) (Detail) - Pension Benefits - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
United States
Defined Benefit Plan Disclosure
Service cost	$ 14	$ 13	$ 12
Interest cost	11	12	14
Expected return on plan assets	(32)	(30)	(25)
Amortization of actuarial losses	0	0	0
Curtailment gain	0	0	0
Settlement gain	0	0	0
Net periodic benefit cost	(7)	(5)	1
Other changes in plan assets and benefit obligations recognized in other comprehensive loss:
Actuarial (gain) loss – current years	(50)	34	(2)
Prior service cost - current year	0	0	0
Curtailment gain - current year	0	0	0
Total recognized in other comprehensive income	(50)	34	(2)
Total recognized in net periodic benefit cost and other comprehensive income	(57)	29	(1)
Non-United States Plans
Defined Benefit Plan Disclosure
Service cost	29	29	25
Interest cost	6	8	9
Expected return on plan assets	(20)	(18)	(16)
Amortization of actuarial losses	1	1	0
Curtailment gain	0	0	(5)
Settlement gain	1	0	0
Net periodic benefit cost	17	20	13
Other changes in plan assets and benefit obligations recognized in other comprehensive loss:
Actuarial (gain) loss – current years	(39)	35	32
Prior service cost - current year	(2)	0	0
Curtailment gain - current year	0	0	5
Total recognized in other comprehensive income	(41)	35	37
Total recognized in net periodic benefit cost and other comprehensive income	$ (24)	$ 55	$ 50

Employee Benefit Plans - Schedu

Employee Benefit Plans - Schedule of Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost and Benefit Obligations (Detail) - Pension Benefits	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
United States
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost
Discount rate	2.84%	3.52%	4.42%
Rate of compensation increases	3.00%	3.00%	3.00%
Expected return on plan assets	7.23%	7.42%	7.67%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation
Discount rate	3.08%	2.84%
Rate of compensation increases	3.00%	3.00%
Non-United States Plans
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost
Discount rate	1.00%	1.45%	1.99%
Rate of compensation increases	2.55%	2.78%	4.54%
Expected return on plan assets	3.92%	3.91%	4.02%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation
Discount rate	1.42%	1.02%
Rate of compensation increases	2.57%	2.55%

Employee Benefit Plans - Define

Employee Benefit Plans - Defined Contribution Plans And Defined Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure
Company's assumed health care cost trend rate for the next seven years	7.00%
Company's assumed ultimate health care cost trend rate	4.50%
Year in which ultimate cost trend rate is assumed to reach	2027
Expected future employer contributions, next fiscal year	$ 33
Expenses related to matching contributions	$ 60	$ 48	$ 56
U.S. Government Treasury Bonds
Defined Benefit Plan Disclosure
Investment credit term	30 years
Cash balance crediting rate as a portion of yield	8.3333%
Cash balance credit rate percentage	0.25%

Employee Benefit Plans - Sche_2

Employee Benefit Plans - Schedule of Pension Plan Weighted Average Asset Allocations (Detail) - Pension Benefits	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	100.00%	100.00%
United States
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	100.00%	100.00%
Non-United States Plans
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	100.00%	100.00%
Equity securities
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	56.65%	56.62%
Equity securities | Minimum
Defined Benefit Plan Disclosure
Defined benefit plan, percentage of expected rate of return on plan assets	45.00%
Equity securities | Maximum
Defined Benefit Plan Disclosure
Defined benefit plan, percentage of expected rate of return on plan assets	65.00%
Equity securities | United States
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	71.13%	71.15%
Equity securities | Non-United States Plans
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	41.29%	42.69%
Debt securities
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	24.03%	21.94%
Debt securities | Minimum
Defined Benefit Plan Disclosure
Defined benefit plan, percentage of expected rate of return on plan assets	10.00%
Debt securities | Maximum
Defined Benefit Plan Disclosure
Defined benefit plan, percentage of expected rate of return on plan assets	30.00%
Debt securities | United States
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	23.72%	23.88%
Debt securities | Non-United States Plans
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	24.36%	20.08%
Real estate
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	2.65%	2.43%
Real estate | Minimum
Defined Benefit Plan Disclosure
Defined benefit plan, percentage of expected rate of return on plan assets	0.00%
Real estate | Maximum
Defined Benefit Plan Disclosure
Defined benefit plan, percentage of expected rate of return on plan assets	5.00%
Real estate | United States
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	5.15%	4.97%
Real estate | Non-United States Plans
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	0.00%	0.00%
Other
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	16.67%	19.02%
Other | Minimum
Defined Benefit Plan Disclosure
Defined benefit plan, percentage of expected rate of return on plan assets	10.00%
Other | Maximum
Defined Benefit Plan Disclosure
Defined benefit plan, percentage of expected rate of return on plan assets	30.00%
Other | United States
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	0.00%	0.00%
Other | Non-United States Plans
Defined Benefit Plan Disclosure
Defined pension plan weighted average asset allocations	34.35%	37.23%

Employee Benefit Plans - Sche_3

Employee Benefit Plans - Schedule of Plan Assets Measured at Fair Value (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
United States
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	$ 146	$ 126
Common/collective trusts measured at net asset value ("NAV")	378	329
Total	524	455
United States | Level 1
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	146	126
Common/collective trusts measured at net asset value ("NAV")	0	0
Total	146	126
United States | Level 2
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	0	0
Common/collective trusts measured at net asset value ("NAV")	0	0
Total	0	0
United States | Domestic equities
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	34	29
United States | Domestic equities | Level 1
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	34	29
United States | Domestic equities | Level 2
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	0	0
United States | International equities
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	10	9
United States | International equities | Level 1
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	10	9
United States | International equities | Level 2
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	0	0
United States | Corporate bonds
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	75	65
United States | Corporate bonds | Level 1
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	75	65
United States | Corporate bonds | Level 2
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	0	0
United States | Real estate
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	27	23
United States | Real estate | Level 1
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	27	23
United States | Real estate | Level 2
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	0	0
Non-United States Plans
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	358	352
Common/collective trusts measured at net asset value ("NAV")	136	123
Total	494	475
Non-United States Plans | Level 1
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	7	6
Common/collective trusts measured at net asset value ("NAV")	0	0
Total	7	6
Non-United States Plans | Level 2
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	351	346
Common/collective trusts measured at net asset value ("NAV")	0	0
Total	351	346
Non-United States Plans | International equities
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	57	69
Non-United States Plans | International equities | Level 1
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	1	3
Non-United States Plans | International equities | Level 2
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	56	66
Non-United States Plans | Debt issued by national, state or local government
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	121	96
Non-United States Plans | Debt issued by national, state or local government | Level 1
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	3	3
Non-United States Plans | Debt issued by national, state or local government | Level 2
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	118	93
Non-United States Plans | Investments funds
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	10	10
Non-United States Plans | Investments funds | Level 1
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	0	0
Non-United States Plans | Investments funds | Level 2
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	10	10
Non-United States Plans | Insurance contracts
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	160	171
Non-United States Plans | Insurance contracts | Level 1
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	0	0
Non-United States Plans | Insurance contracts | Level 2
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	160	171
Non-United States Plans | Other
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	10	6
Non-United States Plans | Other | Level 1
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	3	0
Non-United States Plans | Other | Level 2
Defined Benefit Plan Disclosure
Total assets in the fair value hierarchy	$ 7	$ 6

Employee Benefit Plans - Sche_4

Employee Benefit Plans - Schedule of Expected Benefit Payments, Net of Expected Participants Contributions for Pension Benefits (Detail) - Pension Benefits $ in Millions	Dec. 31, 2021USD ($)
Defined Benefit Plan Disclosure
2022	$ 44
2023	44
2024	47
2025	49
2026	54
Years 2027 through 2031	283
Defined Benefit Plan Expected Future Benefit Payments, Total	$ 521

Employee Benefit Plans - Stock

Employee Benefit Plans - Stock Incentive Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award
Stock-based compensation	$ 170	$ 95	$ 146
Recognized future income tax benefit	26	14	22
Unrecognized non-vested stock-based compensation	$ 149
Weighted average period of stock-based compensation	11 months 19 days
Expiry period of options from grant date	10 years
Weighted average remaining contractual life of the options outstanding	2 years 8 months 12 days
Aggregate intrinsic value of the exercisable stock options and the stock options expected to vest	$ 86
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Total intrinsic value of options exercised	29	120	124
Proceeds from options exercised	$ 7	25	36
At End Of Three Year Period
Share-based Compensation Arrangement by Share-based Payment Award
Percentage of options granted per annum	100.00%
Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award
Number of shares available for future grant	10,000,000
Stock Appreciation Rights - Stock Settled
Share-based Compensation Arrangement by Share-based Payment Award
Intrinsic value of shares exercised	$ 81	73	$ 47
Weighted average remaining contractual life of equity instruments other than options outstanding	6 years 8 months 12 days
Weighted average remaining contractual life of equity instruments other than options exercisable	5 years 9 months 18 days
Aggregate intrinsic value of exercisable expected to vest	$ 625
Aggregate Intrinsic Value	$ 632	$ 282
Number of stock units outstanding (shares)	3,954,893	4,241,342
Stock Appreciation Rights - Stock Settled | Second Anniversary of Grant Date
Share-based Compensation Arrangement by Share-based Payment Award
Percentage of options granted per annum	33.33%
Stock Appreciation Rights - Stock Settled | Third Anniversary Of Grant Date
Share-based Compensation Arrangement by Share-based Payment Award
Percentage of options granted per annum	33.33%
Stock Appreciation Rights - Stock Settled | First Anniversary of Grant Date
Share-based Compensation Arrangement by Share-based Payment Award
Percentage of options granted per annum	33.33%
Performance Awards
Share-based Compensation Arrangement by Share-based Payment Award
Number of stock units outstanding	670,160	786,165
Aggregate Intrinsic Value	$ 189
Fair value of Stock Appreciation Rights granted	$ 202.66
Restricted Stock Units - Stock Settled
Share-based Compensation Arrangement by Share-based Payment Award
Number of stock units outstanding	820,786	573,090
Aggregate Intrinsic Value	$ 232
Number of days for stock units to settle in common stock from vesting date	45 days
Fair value of Stock Appreciation Rights granted	$ 196.91
Restricted Stock Units - Stock Settled | Second Anniversary of Grant Date
Share-based Compensation Arrangement by Share-based Payment Award
Percentage of options granted per annum	50.00%
Restricted Stock Units - Stock Settled | Third and Fourth Anniversary of Grant Date
Share-based Compensation Arrangement by Share-based Payment Award
Percentage of options granted per annum	25.00%
Stock Appreciation Rights - Cash Settled
Share-based Compensation Arrangement by Share-based Payment Award
Weighted average remaining contractual life of equity instruments other than options outstanding	3 years 6 months
Weighted average remaining contractual life of equity instruments other than options exercisable	3 years 1 month 6 days
Aggregate intrinsic value of exercisable expected to vest	$ 28
Fair value of Stock Appreciation Rights granted	$ 216.87	$ 112.10	$ 99.27
Cash paid to settle exercised SARs	$ 1	$ 4	$ 7
Restricted Stock Units - Cash Settled
Share-based Compensation Arrangement by Share-based Payment Award
Aggregate Intrinsic Value	$ 3.5
Number of stock units outstanding (shares)	12,319
Restricted Stock Units - Cash Settled | Third Anniversary Of Grant Date
Share-based Compensation Arrangement by Share-based Payment Award
Percentage of options granted per annum	100.00%
Restricted Stock Awards | Second Anniversary of Grant Date
Share-based Compensation Arrangement by Share-based Payment Award
Percentage of options granted per annum	25.00%
Restricted Stock Awards | Third Anniversary Of Grant Date
Share-based Compensation Arrangement by Share-based Payment Award
Percentage of options granted per annum	25.00%
Restricted Stock Awards | Fourth Anniversary Of Grant Date
Share-based Compensation Arrangement by Share-based Payment Award
Percentage of options granted per annum	50.00%

Employee Benefit Plans - Assump

Employee Benefit Plans - Assumptions Used to Estimate Value of Stock-Based Compensation for Stock Options and Stock Appreciation Rights Issued (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used
Expected volatility, Minimum	27.00%	23.00%	23.00%
Expected volatility, Maximum	31.00%	31.00%	24.00%
Weighted average expected volatility	29.00%	23.00%	23.00%
Expected dividends	0.00%	0.00%	0.00%
Risk-free interest rate, Minimum	0.28%	0.17%	1.55%
Risk-free interest rate, Maximum	1.40%	1.41%	2.56%
Minimum
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used
Expected term (in years)	3 years 7 months 6 days	3 years 2 months 12 days	3 years 8 months 12 days
Maximum
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used
Expected term (in years)	6 years 7 months 6 days	6 years 2 months 12 days	6 years 8 months 12 days

Employee Benefit Plans - Summ_4

Employee Benefit Plans - Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Number of Options
Beginning balance (shares)	532,627
Exercised (shares)	(160,966)
Ending balance (shares)	371,661
Weighted Average Exercise Price
Beginning balance (usd per share)	$ 48.42
Exercised (usd per share)	40.88
Ending balance (usd per share)	$ 51.69
Aggregate Intrinsic Value	$ 86	$ 70

Employee Benefit Plans - Sche_5

Employee Benefit Plans - Schedule of Stock Appreciation Rights - Stock Settled And Cash Settled Activity (Detail) - Stock Appreciation Rights - Stock Settled - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Number of Stock Appreciation Rights
Shares outstanding, beginning (shares)	4,241,342
Granted (shares)	494,929
Exercised (shares)	(695,195)
Canceled (shares)	(86,183)
Shares outstanding, ending (shares)	3,954,893
Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Weighted Average Grant Price [Abstract]
Outstanding, beginning balance (usd per share)	$ 112.66
Granted (usd per share)	184.96
Exercised (usd per share)	103.06
Canceled (usd per share)	152.10
Outstanding, ending balance (usd per share)	$ 122.54
Aggregate Intrinsic Value	$ 632	$ 282

Employee Benefit Plans - Summ_5

Employee Benefit Plans - Summary of Performance Award Activity (Detail) - Performance Awards	12 Months Ended
	Dec. 31, 2021$ / sharesshares
Nonvested Other than Options
Beginning balance (shares) | shares	786,165
Granted (shares) | shares	248,019
Additional goal achievement shares (shares) | shares	303,128
Vested (shares) | shares	(631,215)
Canceled (shares) | shares	(35,937)
Ending balance (shares) | shares	670,160
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning Balance (usd per share) | $ / shares	$ 136.96
Granted (usd per share) | $ / shares	202.66
Additional goal achievement shares (usd per share) | $ / shares	104.29
Vested (usd per share) | $ / shares	103.96
Canceled (usd per share) | $ / shares	168.49
Ending balance (usd per share) | $ / shares	$ 175.89

Employee Benefit Plans - Summ_6

Employee Benefit Plans - Summary of Restricted Stock Units - Stock Settled And Cash Settled Activity (Detail) - Restricted Stock Units - Stock Settled	12 Months Ended
	Dec. 31, 2021$ / sharesshares
Nonvested Other than Options
Beginning balance (shares)	573,090
Granted (shares)	536,199
Vested (shares)	(214,084)
Canceled (shares)	(74,419)
Ending balance (shares)	820,786
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning Balance (usd per share) | $ / shares	$ 143.23
Granted (usd per share) | $ / shares	196.91
Vested (usd per share) | $ / shares	128.85
Canceled (usd per share) | $ / shares	170.29
Ending balance (usd per share) | $ / shares	$ 179.59
Director Deferral Plan
Nonvested Other than Options
Granted (shares)	1,017

Property, Equipment and Softw_3

Property, Equipment and Software by Geography - Property, Equipment and Software, Net, by Geographic Region (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Long Lived Assets Geographic
Total property, equipment and software, net	$ 1,921	$ 1,676
Americas
Long Lived Assets Geographic
Total property, equipment and software, net	1,642	1,445
United States
Long Lived Assets Geographic
Total property, equipment and software, net	1,573	1,379
Other
Long Lived Assets Geographic
Total property, equipment and software, net	69	66
Europe and Africa
Long Lived Assets Geographic
Total property, equipment and software, net	218	161
Asia-Pacific
Long Lived Assets Geographic
Total property, equipment and software, net	$ 61	$ 70

Segments - Additional Informati

Segments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021Segment
Segment Reporting [Abstract]
Number of reportable segments	3

Segments - Operations by Report

Segments - Operations by Reportable Segments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information
Revenues	$ 13,874	$ 11,359	$ 11,088
Costs of revenue, exclusive of depreciation and amortization	9,233	7,500	7,300
Selling, general and administrative expenses	1,964	1,789	1,734
Depreciation and amortization	(1,264)	(1,287)	(1,202)
Restructuring costs	(20)	(52)	(75)
Income from operations	1,393	731	777
Technology & Analytics Solutions
Segment Reporting Information
Revenues	5,534	4,858	4,486
Research & Development Solutions
Segment Reporting Information
Revenues	7,556	5,760	5,788
Contract Sales & Medical Solutions
Segment Reporting Information
Revenues	784	741	814
Operating Segments
Segment Reporting Information
Segment profit	3,009	2,321	2,294
Operating Segments | Technology & Analytics Solutions
Segment Reporting Information
Revenues	5,534	4,858	4,486
Costs of revenue, exclusive of depreciation and amortization	3,278	2,900	2,663
Selling, general and administrative expenses	798	742	722
Segment profit	1,458	1,216	1,101
Operating Segments | Research & Development Solutions
Segment Reporting Information
Revenues	7,556	5,760	5,788
Costs of revenue, exclusive of depreciation and amortization	5,303	3,974	3,936
Selling, general and administrative expenses	777	738	711
Segment profit	1,476	1,048	1,141
Operating Segments | Contract Sales & Medical Solutions
Segment Reporting Information
Revenues	784	741	814
Costs of revenue, exclusive of depreciation and amortization	652	626	701
Selling, general and administrative expenses	57	58	61
Segment profit	75	57	52
General corporate and unallocated
Segment Reporting Information
Selling, general and administrative expenses	332	251	240
Segment profit	$ (332)	$ (251)	$ (240)

Earnings Per Share - Reconciles

Earnings Per Share - Reconciles the Basic to Diluted Weighted Average Shares Outstanding (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net income attributable to IQVIA Holdings Inc.	$ 966	$ 279	$ 191
Denominator:
Basic weighted average common shares outstanding (in shares)	191.4	191.3	195.1
Effect of dilutive stock options and share awards (in shares)	3.6	3.7	4.5
Diluted weighted average common shares outstanding (in shares)	195	195	199.6
Earnings per share attributable to common stockholders:
Basic (in dollars per share)	$ 5.05	$ 1.46	$ 0.98
Diluted (in dollars per share)	$ 4.95	$ 1.43	$ 0.96

Earnings Per Share - Narrative

Earnings Per Share - Narrative (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	0.1	2.4	2

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive (Loss) Income - Summary of Components of AOCI (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity
Beginning Balance	$ 6,001
Acquisition of Quest's non-controlling interest, net of tax	(710)
Ending Balance	6,042	$ 6,001
Income Taxes
Beginning Balance	323	156	$ 177
Other comprehensive loss before reclassifications	(139)	170	(21)
Reclassification adjustments	(4)	(3)	0
Acquisition of Quest's non-controlling interest	0
Ending Balance	180	323	156
Other comprehensive loss before reclassifications, Total	(203)	96	(86)
Reclassification adjustments, Total	12	10	(1)
Accumulated Other Comprehensive (Loss) Income
Increase (Decrease) in Stockholders' Equity
Beginning Balance	(205)	(311)	(224)
Acquisition of Quest's non-controlling interest, net of tax	(10)
Ending Balance	(406)	(205)	(311)
Foreign Currency Translation
Increase (Decrease) in Stockholders' Equity
Beginning Balance	(395)	(430)	(419)
Other comprehensive loss before reclassifications	(165)	35	(11)
Reclassification adjustments	0	0	0
Acquisition of Quest's non-controlling interest, net of tax	(10)
Ending Balance	(570)	(395)	(430)
Derivative Instrument
Increase (Decrease) in Stockholders' Equity
Beginning Balance	(48)	(21)	(1)
Other comprehensive loss before reclassifications	11	(40)	(19)
Reclassification adjustments	16	13	(1)
Acquisition of Quest's non-controlling interest, net of tax	0
Ending Balance	(21)	(48)	(21)
Defined Benefit Plans
Increase (Decrease) in Stockholders' Equity
Beginning Balance	(85)	(16)	19
Other comprehensive loss before reclassifications	90	(69)	(35)
Reclassification adjustments	0	0	0
Acquisition of Quest's non-controlling interest, net of tax	0
Ending Balance	$ 5	$ (85)	$ (16)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive (Loss) Income - Summary of Adjustments for (Gains) Losses Reclassified from AOCI into Condensed Consolidated Statements of Income and Affected Financial Statement Line Item (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income
Total before income taxes	$ (16)	$ (13)	$ 1
Income taxes	(4)	(3)	0
Total net of income taxes	(12)	(10)	1
Interest rate swaps | Interest expense
Reclassification Adjustment out of Accumulated Other Comprehensive Income
Total before income taxes	(21)	(13)	0
Foreign exchange forward contracts | Revenues
Reclassification Adjustment out of Accumulated Other Comprehensive Income
Total before income taxes	5	1	(5)
Foreign exchange forward contracts | Other income, net
Reclassification Adjustment out of Accumulated Other Comprehensive Income
Total before income taxes	$ 0	$ (1)	$ 6

Supplemental Cash Flow Inform_3

Supplemental Cash Flow Information - Supplemental Cash Flow Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplemental Cash Flow Information:
Interest paid	$ 343	$ 399	$ 421
Income taxes paid, net of refunds	$ 222	$ 209	$ 215

Schedule I - Condensed Statemen

Schedule I - Condensed Statements of Income And Comprehensive Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Financial Statements, Captions
Net income attributable to IQVIA Holdings Inc.	$ 966	$ 279	$ 191
Comprehensive income attributable to IQVIA Holdings Inc.	775	385	104
Parent Company
Condensed Financial Statements, Captions
Equity in earnings of subsidiary	966	279	191
Net income attributable to IQVIA Holdings Inc.	966	279	191
Equity in other comprehensive (loss) income of subsidiary, net of tax	(191)	106	(87)
Comprehensive income attributable to IQVIA Holdings Inc.	$ 775	$ 385	$ 104

Schedule I - Condensed Balance

Schedule I - Condensed Balance Sheets (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,366	$ 1,814
Total current assets	4,763	5,090
Investments in Unconsolidated VIEs	24,689	24,564
LIABILITIES AND STOCKHOLDERS’ EQUITY
Total liabilities	18,647	18,284
Commitments and contingencies
Stockholders’ equity:
Common stock and additional paid-in capital, 400.0 shares authorized as of December 31, 2021 and 2020, $0.01 par value, 255.8 shares issued and 190.6 shares outstanding as of December 31, 2021; 254.7 shares issued and 191.2 shares outstanding as of December 31, 2020	10,777	11,095
Retained earnings	2,243	1,277
Treasury stock, at cost, 65.2 and 63.5 shares as of December 31, 2021 and 2020, respectively	(6,572)	(6,166)
Accumulated other comprehensive loss	(406)	(205)
Equity attributable to IQVIA Holdings Inc.’s stockholders	6,042	6,001
Total liabilities and stockholders’ equity	24,689	24,564
Parent Company
Current assets:
Cash and cash equivalents	2	1
Total current assets	2	1
Investment in subsidiary	9,667	9,666
Investments in Unconsolidated VIEs	9,669	9,667
LIABILITIES AND STOCKHOLDERS’ EQUITY
Investment in subsidiary	3,625	3,664
Payable to subsidiary	2	2
Total liabilities	3,627	3,666
Commitments and contingencies
Stockholders’ equity:
Common stock and additional paid-in capital, 400.0 shares authorized as of December 31, 2021 and 2020, $0.01 par value, 255.8 shares issued and 190.6 shares outstanding as of December 31, 2021; 254.7 shares issued and 191.2 shares outstanding as of December 31, 2020	10,777	11,095
Retained earnings	2,243	1,277
Treasury stock, at cost, 65.2 and 63.5 shares as of December 31, 2021 and 2020, respectively	(6,572)	(6,166)
Accumulated other comprehensive loss	(406)	(205)
Equity attributable to IQVIA Holdings Inc.’s stockholders	6,042	6,001
Total liabilities and stockholders’ equity	$ 9,669	$ 9,667

Schedule I - Condensed Balanc_2

Schedule I - Condensed Balance Sheets -Narrative (Detail) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Condensed Financial Statements, Captions
Common stock, shares authorized	400,000,000	400,000,000
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares issued (shares)	255,800,000	254,700,000
Common stock, shares outstanding (in shares)	190,600,000	191,200,000
Treasury stock, shares	65,200,000	63,500,000
Parent Company
Condensed Financial Statements, Captions
Common stock, shares authorized	400,000,000	400,000,000
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares issued (shares)	255,800,000	254,700,000
Common stock, shares outstanding (in shares)	190,600,000	191,200,000
Treasury stock, shares	65,200,000	63,500,000

Schedule I - Condensed Statem_2

Schedule I - Condensed Statements of Cash Flows (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities:
Net income	$ 971	$ 308	$ 227
Changes in operating assets and liabilities:
Net cash provided by operating activities	2,942	1,959	1,417
Investing activities:
Net cash used in investing activities	(2,103)	(796)	(1,190)
Financing activities:
(Payments) proceeds related to employee stock option plans	(59)	(44)	11
Repurchase of common stock	(406)	(447)	(949)
Intercompany with subsidiary	0	(13)	(18)
Net cash used in financing activities	(1,235)	(217)	(276)
Increase (decrease) in cash and cash equivalents	(448)	977	(54)
Cash and cash equivalents at beginning of period	1,814	837	891
Cash and cash equivalents at end of period	1,366	1,814	837
Parent Company
Operating activities:
Net income	966	279	191
Adjustments to reconcile net income to cash provided by operating activities:
Equity in earnings of subsidiary	(966)	(279)	(191)
Changes in operating assets and liabilities:
Other operating assets and liabilities	(1)	0	0
Net cash provided by operating activities	(1)	0	0
Investing activities:
Investment in subsidiary, net of dividends received	467	477	951
Net cash used in investing activities	467	477	951
Financing activities:
(Payments) proceeds related to employee stock option plans	(59)	(44)	11
Repurchase of common stock	(406)	(434)	(963)
Intercompany with subsidiary	0		3
Intercompany with subsidiary		(1)
Net cash used in financing activities	(465)	(479)	(949)
Increase (decrease) in cash and cash equivalents	1	(2)	2
Cash and cash equivalents at beginning of period	1	3	1
Cash and cash equivalents at end of period	$ 2	$ 1	$ 3

Schedule I - Additional Informa

Schedule I - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021
Parent Company
Condensed Financial Statements, Captions
Minimum percentage of restricted net assets of consolidated subsidiaries of consolidated net assets	25.00%

Schedule I - Dividends Paid (De

Schedule I - Dividends Paid (Detail) - USD ($) $ in Millions	1 Months Ended																								12 Months Ended
	Dec. 31, 2021	Nov. 30, 2021	Oct. 31, 2021	Sep. 30, 2021	Aug. 31, 2021	Jul. 31, 2021	Jun. 30, 2021	May 31, 2021	Apr. 30, 2021	Mar. 31, 2021	Feb. 28, 2021	Dec. 31, 2020	Oct. 31, 2020	Jul. 31, 2020	Mar. 31, 2020	Feb. 29, 2020	Dec. 31, 2019	Nov. 30, 2019	Sep. 30, 2019	Aug. 31, 2019	Jun. 30, 2019	May 31, 2019	Mar. 31, 2019	Feb. 28, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Parent
Dividends Payable
Cash dividend paid to parent company	$ 57	$ 89	$ 60	$ 36	$ 35	$ 25	$ 20	$ 23	$ 4	$ 51	$ 70	$ 81	$ 20	$ 2	$ 44	$ 333	$ 13	$ 255	$ 74	$ 239	$ 94	$ 140	$ 141	$ 3	$ 470	$ 480	$ 959

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Detail) - Valuation Allowance of Deferred Tax Assets - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves
Balance at Beginning of Year	$ 306	$ 266	$ 226
Additions Charged to Expenses	1	40	40
Additions Charged to Other Accounts	0	0	0
Additions (Deductions)	(13)	0	0
Balance at End of Year	$ 294	$ 306	$ 266