Cognizant Technology Solutions (CTSH) 10-Q 28 Oct 21 2021 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2021	Oct. 22, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	0-24429
Entity Registrant Name	COGNIZANT TECHNOLOGY SOLUTIONS CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	13-3728359
Entity Address, Address Line One	300 Frank W. Burr Blvd.
Entity Address, City or Town	Teaneck
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	07666
City Area Code	201
Local Phone Number	801-0233
Title of 12(b) Security	Class A Common Stock, $0.01 par value per share
Trading Symbol	CTSH
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		525,251,734
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001058290
Current Fiscal Year End Date	--12-31
Amendment Flag	false

Consolidated Statements Of Fina

Consolidated Statements Of Financial Position (Unaudited) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,664	$ 2,680
Short-term investments	749	44
Trade accounts receivable, net	3,510	3,087
Other current assets	1,072	1,040
Total current assets	6,995	6,851
Property and equipment, net	1,179	1,251
Operating lease assets, net	956	1,013
Goodwill	5,451	5,031
Intangible assets, net	1,198	1,046
Deferred income tax assets, net	282	445
Long-term investments	466	440
Other noncurrent assets	705	846
Total assets	17,232	16,923
Current liabilities:
Accounts payable	351	389
Deferred revenue	312	383
Short-term debt	38	38
Operating lease liabilities	200	211
Accrued expenses and other current liabilities	2,418	2,519
Total current liabilities	3,319	3,540
Deferred revenue, noncurrent	37	36
Operating lease liabilities, noncurrent	804	846
Deferred income tax liabilities, net	214	206
Long-term debt	636	663
Long-term income taxes payable	378	428
Other noncurrent liabilities	298	368
Total liabilities	5,686	6,087
Commitments and contingencies (See Note 12)
Stockholders’ equity:
Preferred stock, $0.10 par value, 15 shares authorized, none issued	0	0
Class A common stock, $0.01 par value, 1,000 shares authorized, 525 and 530 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	5	5
Additional paid-in capital	29	32
Retained earnings	11,479	10,689
Accumulated other comprehensive income (loss)	33	110
Total stockholders’ equity	11,546	10,836
Total liabilities and stockholders’ equity	$ 17,232	$ 16,923

Consolidated Statements Of Fi_2

Consolidated Statements Of Financial Position (Unaudited) (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred Stock, Shares Authorized	15,000,000	15,000,000
Preferred Stock, Shares Issued	0	0
Class A common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,000,000,000	1,000,000,000
Common Stock, Shares, Issued	525,000,000	530,000,000
Common Stock, Shares, Outstanding	525,000,000	530,000,000

Consolidated Statements Of Oper

Consolidated Statements Of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenues	$ 4,744	$ 4,243	$ 13,730	$ 12,468
Operating expenses:
Cost of revenues (exclusive of depreciation and amortization expense shown separately below)	2,947	2,647	8,574	8,009
Selling, general and administrative expenses	924	804	2,632	2,226
Depreciation and amortization expense	144	138	430	407
Income from operations	729	603	2,094	1,649
Other income (expense), net:
Interest income	7	27	23	105
Interest expense	(3)	(6)	(7)	(21)
Foreign currency exchange gains (losses), net	(3)	(1)	(19)	(105)
Other, net	1	1	(1)	1
Total other income (expense), net	2	21	(4)	(20)
Income before provision for income taxes	731	624	2,090	1,629
Provision for income taxes	(187)	(276)	(531)	(552)
Income (Loss) from Equity Method Investments	0	0	2	(1)
Net income	$ 544	$ 348	$ 1,561	$ 1,076
Basic earnings per share (usd per share)	$ 1.04	$ 0.64	$ 2.96	$ 1.98
Diluted earnings per share (usd per share)	$ 1.03	$ 0.64	$ 2.96	$ 1.98
Weighted average number of common shares outstanding - Basic (shares)	525	542	527	543
Dilutive effect of shares issuable under stock-based compensation plans (shares)	1	1	1	0
Weighted average number of common shares outstanding - Diluted (shares)	526	543	528	543
Restructuring Charges	$ 0	$ 51	$ 0	$ 177

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 544	$ 348	$ 1,561	$ 1,076
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(63)	90	(74)	(7)
Change in unrealized gains and losses on cash flow hedges	14	58	(3)	5
Other comprehensive income (loss)	(49)	148	(77)	(2)
Comprehensive income	$ 495	$ 496	$ 1,484	$ 1,074

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	[1]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Retained Earnings [Member]Cumulative Effect, Period of Adoption, Adjustment	[1]	Accumulated other comprehensive income (loss):
AOCI, beginning balance at Dec. 31, 2019	$ 11,022	$ 1		$ 5	$ 33	$ 11,022	$ 1		$ (38)
Beginning balance, shares at Dec. 31, 2019				548
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	367					367
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent									(226)
Other comprehensive income (loss)	(226)
Common stock issued, stock-based compensation plans - value	40				40
Common stock issued, stock-based compensation plans - shares				2
Stock-based compensation expense	55				55
Repurchases of common stock, Value	(526)				(87)	(439)
Repurchases of common stock, Shares				(9)
Dividends declared, $0.24 per share	(120)					(120)
AOCI, ending balance at Mar. 31, 2020	$ 10,613			$ 5	41	10,831			(264)
Ending balance, shares at Mar. 31, 2020				541
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)	$ 0.22
AOCI, beginning balance at Dec. 31, 2019	$ 11,022	$ 1		$ 5	33	11,022	$ 1		(38)
Beginning balance, shares at Dec. 31, 2019				548
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,076
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(2)								(2)
AOCI, ending balance at Sep. 30, 2020	11,140			$ 5	33	11,142			(40)
Ending balance, shares at Sep. 30, 2020				539
AOCI, beginning balance at Mar. 31, 2020	10,613			$ 5	41	10,831			(264)
Beginning balance, shares at Mar. 31, 2020				541
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	361					361
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent									76
Other comprehensive income (loss)	76
Common stock issued, stock-based compensation plans - value	36				36
Common stock issued, stock-based compensation plans - shares				2
Stock-based compensation expense	65				65
Repurchases of common stock, Value	(59)				(59)	0
Repurchases of common stock, Shares				(1)
Dividends declared, $0.24 per share	(120)					(120)
AOCI, ending balance at Jun. 30, 2020	$ 10,972			$ 5	83	11,072			(188)
Ending balance, shares at Jun. 30, 2020				542
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)	$ 0.22
Net income	$ 348					348
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	148								148
Other comprehensive income (loss)	148
Common stock issued, stock-based compensation plans - value	33				33
Common stock issued, stock-based compensation plans - shares				1
Stock-based compensation expense	58				58
Repurchases of common stock, Value	(297)				(141)	(156)
Repurchases of common stock, Shares				(4)
Dividends declared, $0.24 per share	(122)					(122)
AOCI, ending balance at Sep. 30, 2020	$ 11,140			$ 5	33	11,142			(40)
Ending balance, shares at Sep. 30, 2020				539
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)	$ 0.22
AOCI, beginning balance at Dec. 31, 2020	$ 10,836			$ 5	32	10,689			110
Beginning balance, shares at Dec. 31, 2020	530			530
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 505					505
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent									(29)
Other comprehensive income (loss)	(29)
Common stock issued, stock-based compensation plans - value	43				43
Common stock issued, stock-based compensation plans - shares				1
Stock-based compensation expense	62				62
Repurchases of common stock, Value	(252)				(93)	(159)
Repurchases of common stock, Shares				(3)
Dividends declared, $0.24 per share	(128)					(128)
AOCI, ending balance at Mar. 31, 2021	$ 11,037			$ 5	44	10,907			81
Ending balance, shares at Mar. 31, 2021				528
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)	$ 0.24
AOCI, beginning balance at Dec. 31, 2020	$ 10,836			$ 5	32	10,689			110
Beginning balance, shares at Dec. 31, 2020	530			530
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 1,561
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(77)								(77)
AOCI, ending balance at Sep. 30, 2021	$ 11,546			$ 5	29	11,479			33
Ending balance, shares at Sep. 30, 2021	525			525
AOCI, beginning balance at Mar. 31, 2021	$ 11,037			$ 5	44	10,907			81
Beginning balance, shares at Mar. 31, 2021				528
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	512
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent									1
Other comprehensive income (loss)	1
Common stock issued, stock-based compensation plans - value	32				32
Common stock issued, stock-based compensation plans - shares				1
Stock-based compensation expense	67				67
Repurchases of common stock, Value	(316)				(111)	(205)
Repurchases of common stock, Shares				(4)
Dividends declared, $0.24 per share	(128)					(128)
AOCI, ending balance at Jun. 30, 2021	$ 11,205			$ 5	32	11,086			82
Ending balance, shares at Jun. 30, 2021				525
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)	$ 0.24
Net income	$ 544
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(49)								(49)
Other comprehensive income (loss)	(49)
Common stock issued, stock-based compensation plans - value	29				29
Common stock issued, stock-based compensation plans - shares				2
Stock-based compensation expense	65				65
Repurchases of common stock, Value	(121)				(97)	(24)
Repurchases of common stock, Shares				(2)
Dividends declared, $0.24 per share	(127)					(127)
AOCI, ending balance at Sep. 30, 2021	$ 11,546			$ 5	$ 29	$ 11,479			$ 33
Ending balance, shares at Sep. 30, 2021	525			525
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in usd per share)	$ 0.24
[1]	Reflects    the adoption of the Credit Loss Standard on January 1, 2020. Refer to the notes in the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2020.

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 1,561	$ 1,076
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	430	411
Deferred income taxes	146	290
Stock-based compensation expense	194	178
Other	(1)	107
Changes in assets and liabilities:
Trade accounts receivable	(371)	212
Other current and noncurrent assets	257	96
Accounts payable	(39)	83
Deferred revenues, current and noncurrent	(75)	(36)
Other current and noncurrent liabilities	(432)	(16)
Net cash provided by operating activities	1,670	2,401
Cash flows from investing activities:
Purchases of property and equipment	(214)	(309)
Purchases of available-for-sale investment securities	(400)	0
Proceeds from maturity or sale of available-for-sale investment securities	(105)	0
Purchases of held-to-maturity investment securities	(160)	(202)
Proceeds from maturity of held-to-maturity investment securities	150	373
Purchases of other investments	(1,192)	(446)
Proceeds from maturity or sale of other investments	760	464
Payments for business combinations, net of cash acquired	(715)	(1,069)
Net cash (used in) investing activities	(1,666)	(1,189)
Cash flows from financing activities:
Issuance of common stock under stock-based compensation plans	104	109
Repurchases of common stock	(689)	(833)
Repayment of Term Loan borrowings and finance lease and earnout obligations	(40)	(37)
Proceeds from borrowings under the revolving credit facility	0	1,740
Dividends paid	(382)	(362)
Net cash (used in) provided by financing activities	(1,007)	617
Effect of exchange rate changes on cash and cash equivalents	(13)	(38)
(Decrease) increase in cash and cash equivalents	(1,016)	1,791
Cash and cash equivalents, beginning of year	2,680	2,645
Cash and cash equivalents, end of period	$ 1,664	$ 4,436

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share (in usd per share)	$ 0.24	$ 0.24	$ 0.24	$ 0.22	$ 0.22	$ 0.22

Interim Consolidated Financial

Interim Consolidated Financial Statements	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interim Consolidated Financial Statements	The terms “Cognizant,” “we,” “our,” “us” and “the Company” refer to Cognizant Technology Solutions Corporation and its subsidiaries unless the context indicates otherwise. We have prepared the accompanying unaudited consolidated financial statements included herein in accordance with GAAP and the Exchange Act. The accompanying unaudited consolidated financial statements should be read in conjunction w ith our audited consolidated financial statements (and notes thereto) included in our Annual Report on Form 10-K for the year ended December 31, 2020. In our opinion, all adjustments considered necessary for a fair statement of the accompanying unaudited consolidated financial statements have been included and all adjustments are of a normal and recurring nature. Operating results for the interim periods are not necessarily indicative of results that may be expected to occur for the entire year.

Revenues

Revenues	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenues	Disaggregation of Revenues The tables below present disaggregated revenues from contracts with clients by client location, service line and contract type for each of our business segments. We believe this disaggregation best depicts how the nature, amount, timing and uncertainty of our revenues and cash flows are affected by industry, market and other economic factors. Revenues are attributed to geographic regions based upon client location, which is the client's billing address. Substantially all revenues in our North America region relate to operations in the United States. We have defined our Financial Services, Healthcare, Products and Resources and Communications, Media and Technology segments as ("FS"), ("HC"), ("P&R"), and ("CMT"), respectively, in our disaggregation of revenues tables. Three Months Ended Nine Months Ended (in millions) FS HC P&R CMT Total FS HC P&R CMT Total Geography: North America $ 1,075 $ 1,162 $ 749 $ 500 $ 3,486 $ 3,137 $ 3,394 $ 2,190 $ 1,420 $ 10,141 United Kingdom 140 44 125 121 430 395 129 347 332 1,203 Continental Europe 187 118 145 34 484 565 356 380 121 1,422 Europe - Total 327 162 270 155 914 960 485 727 453 2,625 Rest of World 142 30 88 84 344 407 88 243 226 964 Total $ 1,544 $ 1,354 $ 1,107 $ 739 $ 4,744 $ 4,504 $ 3,967 $ 3,160 $ 2,099 $ 13,730 Service line: Consulting and technology services $ 1,049 $ 785 $ 715 $ 441 $ 2,990 $ 3,028 $ 2,299 $ 1,999 $ 1,259 $ 8,585 Outsourcing services 495 569 392 298 1,754 1,476 1,668 1,161 840 5,145 Total $ 1,544 $ 1,354 $ 1,107 $ 739 $ 4,744 $ 4,504 $ 3,967 $ 3,160 $ 2,099 $ 13,730 Type of contract: Time and materials $ 922 $ 515 $ 468 $ 437 $ 2,342 $ 2,729 $ 1,548 $ 1,332 $ 1,256 $ 6,865 Fixed-price 527 554 530 265 1,876 1,498 1,582 1,517 744 5,341 Transaction or volume-based 95 285 109 37 526 277 837 311 99 1,524 Total $ 1,544 $ 1,354 $ 1,107 $ 739 $ 4,744 $ 4,504 $ 3,967 $ 3,160 $ 2,099 $ 13,730 Three Months Ended Nine Months Ended (in millions) FS HC P&R CMT Total FS HC P&R CMT Total Geography: North America $ 1,033 $ 1,054 $ 666 $ 426 $ 3,179 $ 3,023 $ 3,091 $ 1,975 $ 1,286 $ 9,375 United Kingdom 123 40 96 86 345 353 116 278 249 996 Continental Europe 181 116 97 43 437 554 317 300 122 1,293 Europe - Total 304 156 193 129 782 907 433 578 371 2,289 Rest of World 132 21 68 61 282 386 58 195 165 804 Total $ 1,469 $ 1,231 $ 927 $ 616 $ 4,243 $ 4,316 $ 3,582 $ 2,748 $ 1,822 $ 12,468 Service line: Consulting and technology services $ 984 $ 725 $ 564 $ 369 $ 2,642 $ 2,864 $ 2,053 $ 1,674 $ 1,055 $ 7,646 Outsourcing services 485 506 363 247 1,601 1,452 1,529 1,074 767 4,822 Total $ 1,469 $ 1,231 $ 927 $ 616 $ 4,243 $ 4,316 $ 3,582 $ 2,748 $ 1,822 $ 12,468 Type of contract: Time and materials $ 932 $ 505 $ 392 $ 372 $ 2,201 $ 2,689 $ 1,448 $ 1,164 $ 1,112 $ 6,413 Fixed price 450 466 434 218 1,568 1,377 1,292 1,286 638 4,593 Transaction or volume-based 87 260 101 26 474 250 842 298 72 1,462 Total $ 1,469 $ 1,231 $ 927 $ 616 $ 4,243 $ 4,316 $ 3,582 $ 2,748 $ 1,822 $ 12,468 Costs to Fulfill Costs to fulfill, such as setup or transition activities, are recorded in "Other noncurrent assets" in our unaudited consolidated statements of financial position and the amortization expense of costs to fulfill is included in "Cost of revenues" in our unaudited consolidated statements of operations. Costs to obtain contracts were immaterial for the periods disclosed. The following table presents information related to the capitalized costs to fulfill for the nine months ended September 30: (in millions) 2021 2020 Beginning balance $ 467 $ 485 Amortization expense (88) (71) Costs capitalized 38 78 Impairment (11) (10) Ending balance $ 406 $ 482 Contract Balances A contract asset is a right to consideration that is conditional upon factors other than the passage of time. Contract assets are presented in "Other current assets" in our unaudited consolidated statements of financial position and primarily relate to unbilled amounts on fixed-price contracts utilizing the cost-to-cost method of revenue recognition. The table below shows significant movements in contract assets for the nine months ended September 30: (in millions) 2021 2020 Beginning balance $ 315 $ 334 Revenues recognized during the period but not billed 298 281 Amounts reclassified to trade accounts receivable (264) (282) Ending balance $ 349 $ 333 Our contract liabilities, or deferred revenue, consist of advance payments and billings in excess of revenues recognized. The table below shows significant movements in the deferred revenue balances (current and noncurrent) for the nine months ended September 30: (in millions) 2021 2020 Beginning balance $ 419 $ 336 Amounts billed but not recognized as revenues 309 260 Revenues recognized related to the opening balance of deferred revenue (379) (279) Ending balance $ 349 $ 317 Revenues recognized during the three and nine months ended September 30, 2021 for performance obligations satisfied or partially satisfied in previous periods were immaterial. Remaining Performance Obligations As of September 30, 2021, the aggregate amount of transaction price allocated to remaining performance obligations was $1,658 million, of which approximately 80% is expected to be recognized as revenue within 2 years . Disclosure is not required for performance obligations that meet any of the following criteria: (1) contracts with a duration of one year or less as determined under ASC Topic 606: "Revenue from Contracts with Customers", (2) contracts for which we recognize revenues based on the right to invoice for services performed, (3) variable consideration allocated entirely to a wholly unsatisfied performance obligation or to a wholly unsatisfied promise to transfer a distinct good or service that forms part of a single performance obligation in accordance with ASC 606-10-25-14(b), for which the criteria in ASC 606-10-32-40 have been met, or (4) variable consideration in the form of a sales-based or usage-based royalty promised in exchange for a license of intellectual property. Many of our performance obligations meet one or more of these exemptions and therefore are not included in the remaining performance obligation amount disclosed above. Trade Accounts Receivable and Allowance for Credit Loss We calculate expected credit losses for our trade accounts receivable based on historical credit loss rates for each aging category as adjusted for the current market conditions and forecasts about future economic conditions. The following table presents the activity in the allowance for trade accounts receivable for the nine months ended September 30: (in millions) 2021 2020 Beginning balance $ 57 $ 67 Impact of adoption of the Credit Loss Standard — (1) Credit loss expense 5 18 Write-offs charged against the allowance (12) (11) Ending balance $ 50 $ 73

Business Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Business Combinations	Acquisitions completed during the nine months ended September 30, 2021 were not individually or in the aggregate material to our operations. Accordingly, pro forma results have not been presented. We have allocated the purchase price related to these transactions to tangible and intangible assets acquired and liabilities assumed, including goodwill, based on their estimated fair values . Goodwill from our acquisition of ESG Mobility has been allocated to our Products and Resources segment and goodwill from our acquisition of TQS has been allocated to our Healthcare and Products and Resources segments. Goodwill from other 2021 acquisitions is expected to benefit all of our reportable segments and has been allocated as such. The primary items that generated goodwill are the value of the acquired assembled workforces and synergies between the acquired com panies and us, neither of which qualify as an identifiable intangible asset. During the nine months ended September 30, 2021 , we acquired 100% owners hip in each of the following: • Linium, a cloud transformation consultancy group specializing in the ServiceNow platform and solutions for smart digital enterprise workflows, acquired to broaden our enterprise service management capabilities (acquired January 31, 2021); • Magenic, a provider of agile software and cloud development, DevOps, experience design and advisory services across a range of industries, acquired to enhance our global software engineering expertise (acquired February 1, 2021); • Servian, an Australia-based enterprise transformation consultancy specializing in data analytics, AI, digital services, experience design and cloud, acquired to enhance our digital portfolio and market presence in Australia and New Zealand (acquired April 1, 2021); • ESG Mobility, a digital automotive engineering research and development provider for connected, autonomous and electric vehicles, acquired to expand our digital engineering expertise, particularly in connected vehicles (acquired June 1, 2021); • TQS, a global industrial data and intelligence company, acquired to accelerate our growth in IoT, data and analytics (acquired July 30, 2021); and • Hunter, a provider of digital engineering and project management services, acquired to extend our talent network in key markets, expanding our digital engineering resources in the U.S. (acquired August 16, 2021). The allocations of preliminary purchase price to the fair value of the aggregate assets acquired and li abilities assumed were as follows: (in millions) Servian Magenic ESG Mobility Linium Other Total Weighted Average Useful Life Cash $ 4 $ 13 $ 28 $ — $ 2 $ 47 Trade accounts receivable 15 17 24 5 12 73 Property and equipment and other assets 6 4 8 1 4 23 Operating lease assets, net 5 10 27 — 1 43 Non-deductible goodwill 180 10 31 — 16 237 Tax-deductible goodwill — 138 24 57 10 229 Customer relationship assets 77 90 77 24 32 300 10.0 years Other intangible assets 2 1 — — — 3 3.8 years Current liabilities (12) (30) (20) (2) (7) (71) Noncurrent liabilities (29) (7) (65) — (5) (106) Purchase price, inclusive of contingent consideration $ 248 $ 246 $ 134 $ 85 $ 65 $ 778

Restructuring Charges

Restructuring Charges	9 Months Ended
	Sep. 30, 2021
Restructuring Charges [Abstract]
Restructuring Charges	During 2020, we incurred costs related to both our realignment program and our 2020 Fit for Growth Plan. Our realignment program, which began in 2017, improved our client focus, cost structure and the efficiency and effectiveness of our delivery while continuing to drive revenue growth. Our 2020 Fit for Growth Plan, which began in the fourth quarter of 2019, simplified our organizational model and optimized our cost structure in order to partially fund the investments required to execute on our strategy and advance our growth agenda and included our decision to exit certain content-related services that were not in line with our strategic vision for the Company. The total costs related to our realignment program and our 2020 Fit for Growth Plan are reported in "Restructuring charges" in our unaudited consolidated statements of operations. During the three months ended September 30, 2020, we incurred $8 million of professional fees related to our realignment program and $43 million of employee separation and facility exit costs and other charges related to our 2020 Fit for Growth Plan. During the nine months ended September 30, 2020, we incurred $40 million of certain employee retention costs and professional fees related to our realignment program and $137 million of employee separation, employee retention and facility exit costs and other charges related to our 2020 Fit for Growth Plan. We did not incur any costs related to these plans during the t hree and nine months

Investments

Investments	9 Months Ended
	Sep. 30, 2021
Investments [Abstract]
Investments	Our investments were as follows: (in millions) September 30, 2021 December 31, 2020 Short-term investments: Equity investment security $ 27 $ 27 Available-for-sale investment securities 295 — Held-to-maturity investment securities 23 14 Time deposits 404 3 Total short-term investments $ 749 $ 44 Long-term investments: Equity and cost method investments $ 67 $ 35 Restricted time deposits (1) 399 405 Total long-term investments $ 466 $ 440 (1) See Note 8 . Equity Investment Security Our equity investment security is a U.S. dollar denominated investment in a fixed income mutual fund. Realized and unrealized gains and losses were immaterial for the three and nine months ended September 30, 2021 and 2020. Available-for-Sale Investment Securities Our available-for-sale investment securities consist of highly rated U.S. dollar denominated investments in commercial paper maturing within one year. As of September 30, 2021, the amortized cost and fair value of our available-for-sale investments were $295 million. Unrealized gains and losses were immaterial as of September 30, 2021 and there were no realized gains or losses related to our available-for-sale investment securities during the nine months ended September 30, 2021 and 2020. Held-to-Maturity Investment Securities Our held-to-maturity investment securities consist of Indian rupee denominated investments in commercial paper and international corporate bonds. Our investment guidelines are to purchase securities that are investment grade at the time of acquisition. The basis for the measurement of fair value of our held-to-maturity investment securities is Level 2 in the fair value hierarchy. The amortized cost and fair value of held-to-maturity investment securities were as follows: (in millions) September 30, 2021 December 31, 2020 Amortized Fair Amortized Fair Short-term investments, maturing within one year: Corporate and other debt securities $ 3 $ 3 $ 14 $ 14 Commercial paper 20 20 — — Total short-term held-to-maturity investments $ 23 $ 23 $ 14 $ 14 As of September 30, 2021, corporate and other debt securities in the amount of $3 million and commercial paper in the amount of $7 million were in an unrealized loss position. The total unrealized loss was less than $1 million and none of the securities had been in an unrealized loss position for longer than 12 months. As of December 31, 2020, there were no held-to-maturity investment securities in an unrealized loss position. The securities in our portfolio are highly rated and short-term in nature. As of September 30, 2021, our corporate and other debt securities were rated AAA and our commercial paper securities were rated A-1+ by CRISIL, an Indian subsidiary of S&P Global. Equity and Cost Method Investments During the third quarter of 2021, we increased our equity method investment in the technology sector by $32 million. As of September 30, 2021 and December 31, 2020, we had equity method investments of $64 million and $31 million, respectively, and cost method investments of $3 million and $4 million, respectively.

Accrued Expenses And Other Curr

Accrued Expenses And Other Current Liabilities	9 Months Ended
	Sep. 30, 2021
Payables and Accruals [Abstract]
Accrued Expenses And Other Current Liabilities	Accrued expenses and other current liabilities were as follows: (in millions) September 30, 2021 December 31, 2020 Compensation and benefits $ 1,578 $ 1,607 Customer volume and other incentives 267 266 Income taxes 35 34 Professional fees 189 143 Other 349 469 Total accrued expenses and other current liabilities $ 2,418 $ 2,519

Debt

Debt	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Debt	In 2018, we entered int o th e Credit Agreement providing for the $750 million Term Loan and a $1,750 million unsecured revolving credit facility, which are due to mature in November 2023. The Credit Agreement requires interest to be paid, at our option, at either the ABR or the Eurocurrency Rate (each as defined in the Credit Agreement), plus, in each case, an Applicable Margin (as defined in the Credit Agreement). Initially, the Applicable Margin is 0.875% with respect to Eurocurrency Rate loans and 0.00% with respect to ABR loans. Subsequently, the Applicable Margin with respect to Eurocurrency Rate loans may range from 0.75% to 1.125%, depending on our public debt ratings (or, if we have not received public debt ratings, from 0.875% to 1.125%, depending on our Leverage Ratio, which is the ratio of indebtedness for borrowed money to Consolidated EBITDA, as defined in the Credit Agreement). Our Credit Agreement also provides a mechanism for determining an alternative rate of inter est to the Eurocurrency rate after LIBOR is no longer available. We are required under the Credit Agreement to make scheduled quarterly principal payments on the Term Loan. The Credit Agreement contains customary affirmative and negative covenants as well as a financial covenant. We were in compliance with all debt covenants and representations as of September 30, 2021. In February 2021, our Ind ia subsidiary renewed its 13 billion Indian rupee ( $175 million at the September 30, 2021 exchange rate) working capital facility, which requires us to repay any balances within 90 days from the date of disbursement. There is a 1.0% prepayment penalty applicable to payments made prior to 30 days after disbursement. This working capital facility contains affirmative and negative covenants and may be renewed annually in February. Short-term Debt As of both September 30, 2021 and December 31, 2020, we had $38 million of short-term debt related to current maturities of our Term Loan. Long-term Debt The following summarizes our long-term debt balances as of: (in millions) September 30, 2021 December 31, 2020 Term Loan $ 676 $ 703 Less: Current maturities - Term Loan (38) (38) Deferred financing costs (2) (2) Long-term debt, net of current maturities $ 636 $ 663 The carrying value of our debt approximated its fair value as of September 30, 2021 and December 31, 2020.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	e reached an agreement with the IRS, which settled tax years 2012 through 2016. As a result of this settlement, in the first quarter of 2021, we recorded a reduction of $43 million to our uncertain tax position balance, which resulted in a $14 million discrete benefit to the provision for income taxes and a $29 million adjustment to our current income tax balance sheet accounts. Tax years that remain subject to examination by the IRS are 2017 onward. Our effective income tax rates were as follows: Three Months Ended Nine Months Ended 2021 2020 2021 2020 Effective income tax rate 25.6 % 44.2 % 25.4 % 33.9 % The effective tax rate decreased in 2021 as compared to 2020 primarily as a result of our decision in the third quarter of 2020 to reverse our indefinite reinvestment assertion on Indian earnings accumulated in prior years, which resulted in a $140 million T ax on Accumulated Indian Earnings recorded as income tax expense in the third quarter of 2020. We are involved in an ongoing dispute with the ITD in connection with a previously disclosed transaction undertaken by CTS India in 2016 to repurchase shares from its shareholders (non-Indian Cognizant entities) valued at $2.8 billion . As a result of that transaction, which was undertaken pursuant to a plan approved by the High Court in Chennai, India, we previously paid $135 million in Indian income taxes - an amount we believe includes all applicable taxes owed for this transaction under Indian law. In March 2018, we received a communication from the ITD asserting that the ITD is owed an additional 33 billion Indian rupees ( $445 million at the September 30, 2021 exchange rate) on the 2016 transaction. Immediately thereafter, the ITD placed a n attachment on certain of our India bank accounts. In addition to the dispute on the 2016 transaction, we are also involved in another ongoing dispute with the ITD relating to a 2013 transaction undertaken by CTS India to repurchase shares from its shareholders valued at $523 million (the tw o disputes are collectively referred to as the "ITD Dispute"). In April 2018, the High Court admitted our writ petition for a stay of the actions of the ITD and lifted the ITD’s attachment on our bank accounts. As part of the interim stay order, we deposited 5 billion Indian rupees ($67 million at the September 30, 2021 exchange rate and $68 million at the December 31, 2020 exchange rate) representing 15% of the disputed tax amount related to the 2016 transaction, with the ITD. In addition, the High Court placed a lien on certain time deposits of CTS India in the amount of 28 billion Indian rupees ($378 million at the September 30, 2021 exchange rate and $384 million at the December 31, 2020 exchange rate), which is the remainder of the disputed tax amount related to the 2016 transaction. In June 2019, the High Court dismissed our previously admitted writ petitions on the ITD Dispute, holding that the Company must exhaust other remedies, such as pursuing the matter before other appellate bodies, for resolution of the ITD Dispute prior to intervention by the High Court. The High Court did not issue a ruling on the substantive issue of whether we owe additional tax as a result of either the 2016 or the 2013 transaction. In July 2019, we appealed the High Court’s orders before the Division Bench. In September 2019, the Division Bench partly allowed the Company’s appeal with respect to the 2016 transaction, but did not issue a ruling on the substantive issue of the tax implications of the transactions. In October 2019, we filed a SLP before the SCI with respect to the 2016 transaction. In March 2020, the SCI referred the case based on the 2016 transaction back to the ITD with directions to carry out the assessment following the due process of law. Further, until the conclusion of the assessment, the SCI maintained in place the lien on our 28 billion Indian rupees time deposit and did not order the release of the 5 billion Indian rupees deposit held by the ITD. In April 2020, we received an assessment from the ITD, which is consistent with its previous assertions regarding our 2016 transaction. In June 2020, we filed an appeal against this assessment. As of September 30, 2021 and December 31, 2020, the balance of deposits under lien was $399 million and $405 million, respectively, presented in "Long-term investments", including a portion of the interest previously earned. As of September 30, 2021 and December 31, 2020, the deposit with the ITD was $67 million and $68 million respectively, presented in "Other noncurrent assets". We believe we have paid all applicable taxes owed on both the 2016 and the 2013 transactions. Accordingly, we have not recorded any reserves for these matters as of September 30, 2021.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	In the normal course of business, we use foreign exchange forward and option contracts to manage foreign currency exchange rate risk. Derivatives may give rise to credit risk from the possible non-performance by counterparties. Credit risk is limited to the fair value of those contracts that are favorable to us. We have limited our credit risk by limi ting the amount of credit exposure with any one financial institution and conducting ongoing evaluation of the creditworthiness of the financial institutions with which we do business. In addition, all the assets and liabilities related to our foreign exchange derivative contracts set forth in the below table are subject to master netting arrangements, such as the International Swaps and Derivatives Association Master Agreement, with each individual counterparty. These master netting arrangements generally provide for net settlement of all outstanding contracts with the counterparty in the case of an event of default or a termination event. We have presented all the assets and liabilities related to our foreign exchange derivative contracts, as applicable, on a gross basis, with no offsets, in our unaudited consolidated statements of financial position. There is no financial collateral (including cash collateral) posted or received by us related to our foreign exchange derivative contracts. The following table provides information on the location and fair values of derivative financial instruments included in our unaudited consolidated statements of financial position as of: (in millions) September 30, 2021 December 31, 2020 Designation of Derivatives Location on Statement of Assets Liabilities Assets Liabilities Foreign exchange forward and option contracts – Designated as cash flow hedging instruments Other current assets $ 46 $ — $ 45 $ — Other noncurrent assets 13 — 26 — Other noncurrent liabilities — 1 — — Total 59 1 71 — Foreign exchange forward contracts – Not designated as hedging instruments Other current assets 8 — 1 — Accrued expenses and other current liabilities — 2 — 1 Total 8 2 1 1 Total $ 67 $ 3 $ 72 $ 1 Cash Flow Hedges We have entered into a series of foreign exchange derivative contracts that are designated as cash flow hedges of Indian rupee denominated payments in India. These contracts are intended to partially offset the impact of movement of the Indian rupee against the U.S. dollar on future operating costs and are scheduled to mature each month during the remainder of 2021, 2022 and the first nine months of 2023. The changes in fair value of these contracts are initially reported in "Accumulated other comprehensive income (loss)" in our unaudited consolidated statements of financial position and are subsequently reclassified to earnings within "Cost of revenues" and "Selling, general and administrative expenses" in our unaudited consolidated statements of operations in the same period that the forecasted Indian rupee denominated payments are recorded in earnings. As of September 30, 2021, we estima te that $43 million, net of tax, of net gains rela ted to derivatives designated as cash flow hedges reported in "Accumulated other comprehensive income (loss)" in our unaudited consolidated statements of financial position is expected to be reclassified into earnings within the next 12 months. The notional values of our outstanding contracts by year of maturity were as follows: (in millions) September 30, 2021 December 31, 2020 2021 $ 467 $ 1,470 2022 1,288 803 2023 555 — Total notional value of contracts outstanding (1) $ 2,310 $ 2,273 (1) Includes $93 million and $133 million notional value of option contract s as of September 30, 2021 and December 31, 2020, respectively, with the remaining notional value related to forward contracts. The following table provides information on the location and amounts of pre-tax gains and losses on our cash flow hedges for the three months ended September 30: (in millions) Change in Location of Net Gains Reclassified Net Gains Reclassified 2021 2020 2021 2020 Foreign exchange forward and option contracts – Designated as cash flow hedging instruments $ 33 $ 77 Cost of revenues $ 13 $ 5 SG&A expenses 2 1 Total $ 15 $ 6 The following table provides information on the location and amounts of pre-tax gains and losses on our cash flow hedges for the nine months ended September 30: (in millions) Change in Location of Net Gains (Losses) Reclassified Net Gains (Losses) Reclassified 2021 2020 2021 2020 Foreign exchange forward and option contracts – Designated as cash flow hedging instruments $ 47 $ (1) Cost of revenues $ 43 $ (7) SG&A expenses 7 (1) Total $ 50 $ (8) The activity related to the change in net unrealized gains and losses on our cash flow hedges included in "Accumulated other comprehensive income (loss)" in our unaudited consolidated statements of stockholders' equity is present ed in Note 11 . Other Derivatives We use foreign exchange forward contracts to provide an economic hedge against balance sheet exposures to certain monetary assets and liabilities denominated in currencies other than the functional currency of our foreign subsidiaries. We entered into foreign exchange forward contracts that are scheduled to mature in 2021. Realized gains or losses and changes in the estimated fair value of these derivative financial instruments are recorded in the caption "Foreign currency exchange gains (losses), net" in our unaudited consolidated statements of operations. Additional information related to our outstanding foreign exchange forward contracts not designated as hedging instruments was as follows: (in millions) September 30, 2021 December 31, 2020 Notional Fair Value Notional Fair Value Contracts outstanding $ 919 $ 6 $ 637 $ — The following table provides information on the location and amounts of realized and unrealized pre-tax gains and losses on our other derivative financial instruments for the three and nine months ended September 30: Location of Net Gains (Losses) on Amount of Net Gains (Losses) on Derivative Instruments Three Months Ended Nine Months Ended (in millions) 2021 2020 2021 2020 Foreign exchange forward contracts – Not designated as hedging instruments Foreign currency exchange gains (losses), net $ 1 $ (57) $ 7 $ (54) The related cash flow impacts of all of our derivative activities are reflected as cash flows from operating activities.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	We measure our cash equivalents, certain investments, contingent consideration liabilities and foreign exchange forward and option contracts at fair value. The authoritative guidance defines fair value as the exit price, or the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. The authoritative guidance also establishes a fair value hierarchy that is intended to increase consistency and comparability in fair value measurements and related disclosures. The fair value hierarchy is based on inputs to valuation techniques that are used to measure fair value that are either observable or unobservable. Observable inputs reflect assumptions market participants would use in pricing an asset or liability based on market data obtained from independent sources while unobservable inputs reflect a reporting entity’s pricing based upon their own market assumptions. The fair value hierarchy consists of the following three levels: • Level 1 – Inputs are quoted prices in active markets for identical assets or liabilities. • Level 2 – Inputs are quoted prices for similar assets or liabilities in an active market, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable and market-corroborated inputs which are derived principally from or corroborated by observable market data. • Level 3 – Inputs are derived from valuation techniques in which one or more significant inputs or value drivers are unobservable. The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of September 30, 2021: (in millions) Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 582 $ — $ — $ 582 Time deposits — 4 — 4 Commercial paper — 290 — 290 Short-term investments: Time deposits — 404 — 404 Equity investment security 27 — — 27 Available-for-sale investment securities: Commercial paper — 295 — 295 Other current assets: Foreign exchange forward and option contracts — 54 — 54 Long-term investments: Restricted time deposits (1) — 399 — 399 Other noncurrent assets Foreign exchange forward contracts — 13 — 13 Accrued expenses and other current liabilities: Foreign exchange forward contracts — (2) — (2) Contingent consideration liabilities — — (29) (29) Other noncurrent liabilities: Foreign exchange forward contracts — (1) — (1) Contingent consideration liabilities — — (9) (9) (1) See Note 8 . The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of December 31, 2020: (in millions) Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 209 $ — $ — $ 209 Time deposits — 203 — 203 Commercial paper — 200 — 200 Short-term investments: Time deposits — 3 — 3 Equity investment security 27 — — 27 Other current assets: Foreign exchange forward and option contracts — 46 — 46 Long-term investments: Restricted time deposits (1) — 405 — 405 Other noncurrent assets: Foreign exchange forward and option contracts — 26 — 26 Accrued expenses and other current liabilities: Foreign exchange forward and option contracts — (1) — (1) Contingent consideration liabilities — — (11) (11) Other noncurrent liabilities: Contingent consideration liabilities — — (43) (43) (1) Se e Note 8 . The following table summarizes the changes in Level 3 contingent consideration liabilities for the nine months ended September 30 : (in millions) 2021 2020 Beginning balance $ 54 $ 38 Initial measurement recognized at acquisition 11 42 Change in fair value recognized in SG&A expenses (24) (24) Payments (3) (3) Ending balance $ 38 $ 53 We measure the fair value of money market funds based on quoted prices in active markets for identical assets and measure the fair value of our equity security based on the published daily net asset value at which investors can freely subscribe to or redeem from the fund. The fair value of commercial paper is measured based on relevant trade data, dealer quotes, or model-driven valuations using significant inputs derived from or corroborated by observable market data, such as yield curves and credit spreads. The carrying value of our time deposits approximated fair value as of September 30, 2021 and December 31, 2020. We estimate the fair value of each foreign exchange forward contract by using a present value of expected cash flows model. This model calculates the difference between the current market forward price and the contracted forward price for each foreign exchange forward contract and applies the difference in the rates to each outstanding contract. The market forward rates include a discount and credit risk factor. We estimate the fair value of each foreign exchange option contract by using a variant of the Black-Scholes model. This model uses present value techniques and reflects the time value and intrinsic value based on observable market rates. We estimate the fair value of contingent consideration liabilities associated with our acquisitions using a variation of the income approach, which utilizes one or more significant inputs that are unobservable. This approach calculates the fair value of such liabilities based on the probability-weighted expected performance of the acquired entity against the target performance metric, discounted to present value when appropriate. During the nine months ended September 30, 2021 and the year ended December 31, 2020, there were no transfers among Level 1, Level 2 or Level 3 financial assets and liabilities.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Changes in "Accumulated other comprehensive income (loss)" by component were as follows for the three and nine months ended September 30, 2021: Three Months Nine Months (in millions) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Foreign currency translation adjustments: Beginning balance $ 44 $ — $ 44 $ 56 $ (1) $ 55 Change in foreign currency translation adjustments (65) 2 (63) (77) 3 (74) Ending balance $ (21) $ 2 $ (19) $ (21) $ 2 $ (19) Unrealized gains on cash flow hedges: Beginning balance $ 46 $ (8) $ 38 $ 67 $ (12) $ 55 Unrealized gains arising during the period 33 (6) 27 47 (9) 38 Reclassifications of net (gains) to: Cost of revenues (13) 2 (11) (43) 8 (35) SG&A expenses (2) — (2) (7) 1 (6) Net change 18 (4) 14 (3) — (3) Ending balance $ 64 $ (12) $ 52 $ 64 $ (12) $ 52 Accumulated other comprehensive income (loss): Beginning balance $ 90 $ (8) $ 82 $ 123 $ (13) $ 110 Other comprehensive income (loss) (47) (2) (49) (80) 3 (77) Ending balance $ 43 $ (10) $ 33 $ 43 $ (10) $ 33 Changes in "Accumulated other comprehensive income (loss)" by component were as follows for the three and nine months ended September 30, 2020: Three Months Nine Months (in millions) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Foreign currency translation adjustments: Beginning balance $ (165) $ 4 $ (161) $ (63) $ (1) $ (64) Change in foreign currency translation adjustments 93 (3) 90 (9) 2 (7) Ending balance $ (72) $ 1 $ (71) $ (72) $ 1 $ (71) Unrealized (losses) gains on cash flow hedges: Beginning balance $ (33) $ 6 $ (27) $ 31 $ (5) $ 26 Unrealized gains (losses) arising during the period 77 (14) 63 (1) (1) (2) Reclassifications of net (gains) losses to: Cost of revenues (5) 1 (4) 7 (1) 6 SG&A expenses (1) — (1) 1 — 1 Net change 71 (13) 58 7 (2) 5 Ending balance $ 38 $ (7) $ 31 $ 38 $ (7) $ 31 Accumulated other comprehensive income (loss): Beginning balance $ (198) $ 10 $ (188) $ (32) $ (6) $ (38) Other comprehensive income (loss) 164 (16) 148 (2) — (2) Ending balance $ (34) $ (6) $ (40) $ (34) $ (6) $ (40)

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	We are involved in various claims and legal proceedings arising in the ordinary course of business. We accrue a liability when a loss is considered probable and the amount can be reasonably estimated. When a material loss contingency is reasonably possible but not probable, we do not record a liability, but instead disclose the nature and the amount of the claim, and an estimate of the loss or range of loss, if such an estimate can be made. Legal fees are expensed as incurred. While we do not expect that the ultimate resolution of any existing claims and proceedings (other than the specific matters described below, if decided adversely), individually or in the aggregate, will have a material adverse effect on our financial position, an unfavorable outcome in some or all of these proceedings could have a material adverse impact on results of operations or cash flows for a particular period. This assessment is based on our current understanding of relevant facts and circumstances. As such, our view of these matters is subject to inherent uncertainties and may change in the future. On January 15, 2015, Syntel sued TriZetto and Cognizant in the USDC-SDNY. Syntel’s complaint alleged breach of contract against TriZetto, and tortious interference and misappropriation of trade secrets against Cognizant and TriZetto, stemming from Cognizant’s hiring of certain former Syntel employees. Cognizant and TriZetto countersued on March 23, 2015, for breach of contract, misappropriation of trade secrets and tortious interference, based on Syntel’s misuse of TriZetto confidential information and abandonment of contractual obligations. Cognizant and TriZetto subsequently added federal D efend Trade Secrets Act and copyright infringement claims for Syntel’s misuse of TriZetto’s proprietary technology. The parties’ claims were narrowed by the court and the case was tried before a jury, which on October 27, 2020 returned a verdict in favor of Cognizant in the amount of $855 million, including $570 million in punitive damages. On April 20, 2021, the USDC-SDNY issued a post-trial order that, among other things, affirmed the jury’s award of $285 million in actual damages, but r educed the award of punitive damages from $570 million to $285 million, thereby reducing the overall damages award from $855 million to $570 million. The USDC-SDNY subsequently issued a final judgment consistent with the April 20 th order. On May 26, 2021, Syntel filed a notice of appeal to the United States Court of Appeals for the Second Circuit, and on June 3, 2021 the USDC-SDNY stayed execution of judgment pending appeal. We will not record the gain in our financial statements until it becomes realizable. On February 28, 2019, a ruling of the SCI interpreting the India Defined Contribution Obligation altered historical understandings of the obligation, extending it to cover additional portions of the employee’s income. As a result, the ongoing contributions of our affected employees and the Company were required to be increased. In the first quarter of 2019, we accrued $117 million with respect to prior periods, assuming retroactive application of the Supreme Court’s ruling, in "Selling, general and administrative e xpenses" in our unaudited consolidated statement of operations. There is significant uncertainty as to how the liability should be calculated as it is impacted by multiple variables, including the period of assessment, the application with respect to certain current and former employees and whether interest and penalties may be assessed. Since the ruling, a variety of trade associations and industry groups have advocated to the Indian government, highlighting the harm to the information technology sector, other industries and job growth in India that would result from a retroactive application of the ruling. It is possible the Indian government will review the matter and there is a substantial question as to whether the Indian government will apply the SCI’s ruling on a retroactive basis. As such, the ultimate amount of our obligation may be materially different from the amount accrued. On October 5, 2016, October 27, 2016 and November 18, 2016, three putative securities class action complaints were filed in the USDC-NJ naming us and certain of our current and former officers at that time as defendants. These complaints were consolidated into a single action and on April 7, 2017, the lead plaintiffs filed a consolidated amended complaint on behalf of a putative class of persons and entities who purchased our common stock during the period between February 27, 2015 and September 29, 2016, naming us and certain of our current and former officers at that time as defendants and alleging violations of the Exchange Act, based on allegedly false or misleading statements related to potential violations of the Foreign Corrupt Practices Act, our business, prospects and operations, and the effectiveness of our internal controls over financial reporting and our disclosure controls and procedures. The lead plaintiffs seek an award of compensatory damages, among other relief, and their reasonable costs and expenses, including attorneys’ fees. Defendants filed motions to dismiss the consolidated amended complaint on June 6, 2017. On August 8, 2018, the USDC-NJ issued an order which granted the motions to dismiss in part, including dismissal of all claims against then-current officers of the Company, and denied them in part. On September 7, 2018, we filed a motion in the USDC-NJ to certify the August 8, 2018 order for immediate appeal to the United States Court of Appeals for the Third Circuit pursuant to 28 U.S.C. § 1292(b). On October 18, 2018, the USDC-NJ issued an order granting our motion, and staying the action pending the outcome of our appeal petition to the Third Circuit. On October 29, 2018, we filed a petition for permission to appeal with the Third Circuit. On March 6, 2019, the Third Circuit denied our petition without prejudice. In an order dated March 19, 2019, the USDC-NJ directed the lead plaintiffs to provide the defendants with a proposed amended complaint. On April 26, 2019, lead plaintiffs filed their second amended complaint. We filed a motion to dismiss the second amended complaint on June 10, 2019. On June 7, 2020, the USDC-NJ issued an order denying our motion to dismiss the second amended complaint. On July 10, 2020, we filed our answer to the second amended complaint. On July 23, 2020, the DOJ filed a motion on consent for leave to intervene and to stay all discovery through the conclusion of the criminal proceedings in United States v. Gordon J. Coburn and Steven Schwartz , Crim. No. 19-120 (KM), except for documents produced by us to the DOJ in connection with those criminal proceedings. On July 24, 2020, the USDC-NJ granted the DOJ’s motion; and on that same day, we filed a motion in the USDC-NJ to certify the June 7, 2020 order for immediate appeal to the Third Circuit pursuant to 28 U.S.C. § 1292(b). On March 17, 2021, the USDC-NJ issued an order denying our motion. On September 7, 2021, the parties filed a settlement agreement that, subject to the approval of the USDC-NJ, would resolve the consolidated putative securities class action against us and certain of our former officers. The settlement agreement provides for a payment of $95 million to the putative class (inclusive of attorneys’ fees and litigation expenses). Adjusting for indemnification expenses, legal fees and other covered expenses incurred through September 7, 2021, the remaining available balance under the applicable directors and officers insurance policies was $75 million. As a result, we recorded a loss of $20 million in "Selling, general and administrative expenses" in our unaudited consolidated financial statements. The loss is referred to as the Class Action Settlement Loss. We and the other defendants are entering into the settlement agreement to eliminate the uncertainty, burden, and expense of further protracted litigation. We and the other defendants expressly deny that the plaintiffs in the consolidated putative securities class action have asserted any valid claims as to us and them, respectively. On September 9, 2021, the USDC-NJ granted preliminary approval of the settlement. The settlement is subject to final approval by the USDC-NJ and certain other conditions, and we cannot provide assurance that the USDC-NJ will grant final approval of the settlement. Notice is being provided to potential class members who will have an opportunity to opt out of the settlement and make any objections to the USDC-NJ, which the USDC-NJ will then review. After the notice and objection period, the USDC-NJ is scheduled to hold a hearing on December 20, 2021 to determine whether to grant final approval of the settlement. If final approval is not granted by the USDC-NJ, or if the settlement does not become final for any other reason, we will return to our position prior to the settlement and we are unable to predict the duration, scope or result of the subsequent litigation. On October 31, 2016, November 15, 2016 and November 18, 2016, three putative shareholder derivative complaints were filed in New Jersey Superior Court, Bergen County, naming us, all of our then current directors and certain of our current and former officers at that time as defendants. These actions were consolidated in an order dated January 24, 2017. The complaints assert claims for breach of fiduciary duty, corporate waste, unjust enrichment, abuse of control, mismanagement, and/or insider selling by defendants. On March 16, 2017, the parties filed a stipulation deferring all further proceedings pending a final, non-appealable ruling on the then-anticipated motion to dismiss the consolidated putative securities class action. On April 26, 2017, in lieu of ordering the stipulation filed by the parties, the New Jersey Superior Court deferred further proceedings by dismissing the consolidated putative shareholder derivative litigation without prejudice but permitting the parties to file a motion to vacate the dismissal in the future. On February 22, 2017, April 7, 2017 and May 10, 2017, three additional putative shareholder derivative complaints alleging similar claims were filed in the USDC-NJ, naming us and certain of our current and former directors and officers at that time as defendants. These complaints asserted claims similar to those in the previously-filed putative shareholder derivative actions. In an order dated June 20, 2017, the USDC-NJ consolidated these actions into a single action, appointed lead plaintiff and lead counsel, and stayed all further proceedings pending a final, non-appealable ruling on the motions to dismiss the consolidated putative securities class action. On October 30, 2018, lead plaintiff filed a consolidated verified derivative complaint. On March 11, 2019, a seventh putative shareholder derivative complaint was filed in the USDC-NJ, naming us and certain of our current and former directors and officers at that time as defendants. T he complaint in that action asserts claims similar to those in the previously-filed putative shareholder derivative actions. On May 14, 2019, the USDC-NJ approved a stipulation that (i) consolidated this action with the putative shareholder derivative suits that were previously filed in the USDC-NJ; and (ii) stayed all of these suits pending an order on the motion to dismiss the second amended complaint in the consolidated putative securities class action. On August 3, 2020, lead plaintiffs filed an amended complaint. On October 19, 2020, the USDC-NJ approved a stipulation that stayed all of these suits through the earlier of the conclusion of the criminal proceedings in United States v. Gordon J. Coburn and Steven Schwartz, Crim. No. 19-120 (KM), or November 1, 2021. On June 1, 2021, an eighth putative shareholde r derivative complaint was filed in the USDC-NJ, naming us and certain of our current and former directors and officers at that time a s defendants. The complaint asserts claims similar to those in the previously-filed putative shareholder derivative actions. On August 2, 2021, the USDC-NJ approved a stipulation that stayed this action through the earliest of (i) the conclusion of the criminal proceedings in United States v. Gordon J. Coburn and Steven Schwartz, Crim. No. 19-120 (KM), (ii) the dissolution of the stay in the consolidated putative securities class action, provided that the dissolution of the stay in the consolidated putative securities class action is not the result of a settlement agreement or other mutual resolution of the consolidated putative securities class action, or (iii) the dissolution of the stay in the consolidated putative shareholder derivative action pending in USDC-NJ, provided that we are required to answer, move to dismiss, or otherwise respond to the operative complaint in that action following the dissolution of the stay. We are presently unable to predict the duration, scope or result of the putative shareholder derivative actions. Although the Company continues to defend the putative shareholder derivative actions vigorously, these lawsuits are subject to inherent uncertainties, the actual cost of such litigation will depend upon many unknown factors and the outcome of the litigation is necessarily uncertain. We have indemnification and expense advancement obligations pursuant to our bylaws and indemnification agreements with respect to certain current and former members of senior management and of the Company’s board of directors. In connection with the matters that were the subject of our previously disclosed internal investigation, the DOJ and SEC investigations and the related litigation, we have received and expect to continue to receive requests under such indemnification agreements and our bylaws to provide funds for legal fees and other expenses. As of the filing of the settlement agreement on September 7, 2021, there are no amounts remaining available to us under applicable insurance policies for our ongoing indemnification and advancement obligations with respect to certain of our current and former officers and directors or incremental legal fees and other expenses related to the above matters. See Note 8 for information relating to the ITD Dispute. Many of our engagements involve projects that are critical to the operations of our clients’ business and provide benefits that are difficult to quantify. Any failure in a client’s systems or our failure to meet our contractual obligations to our clients, including any breach involving a client’s confidential information or sensitive data, or our obligations under applicable laws or regulations could result in a claim for substantial damages against us, regardless of our responsibility for such failure. Although we attempt to contractually limit our liability for damages arising from negligent acts, errors, mistakes, or omissions in rendering our services, there can be no assurance that the limitations of liability set forth in our contracts will be enforceable in all instances or will otherwise protect us from liability for damages. Although we have general liability insurance coverage, including coverage for errors or omiss ions, we retain a significant portion of risk through our insurance deductibles and the re can be no assurance that such coverage will cover all types of claims, continue to be available on reasonable terms or will be available in sufficient amounts to cover one or more large claims, or that the insurer will not disclaim coverage as to any future claim. The successful assertion of one or more large claims against us that exceed or are not covered by our insurance coverage or changes in our insurance policies, including premium increases or the imposition of large deductible or co-insurance requirements, could have a material adverse effect on our business, results of operations, financial position and cash flows for a particular period.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Segment Information	Our reportable segments are: • Financial Services, which consists of our banking and insurance operating segments; • Healthcare, which consists of our healthcare and life sciences operating segments; • Products and Resources, which consists of our retail and consumer goods; manufacturing, logistics, energy, and utilities; and travel and hospitality operating segments; and • Communications, Media and Technology, which includes our communications and media operating segment and our technology operating segment. Our client partners, account executives and client relationship managers are aligned in accordance with the specific industries they serve. Our chief operating decision maker evaluates the Company's performance and allocates resources based on segment revenues and operating profit. Segment operating profit is defined as income from operations before unallocated costs. Generally, operating expenses for each operating segment have similar characteristics and are subject to the same factors, pressures and challenges. However, the economic environment and its effects on industries served by our operating segments may affect revenues and operating expenses to differing degrees. Expenses included in segment operating profit consist principally of direct selling and delivery costs (including stock-based compensation expense) as well as a per employee charge for use of our global delivery centers and infrastructure. Certain SG&A expenses, the excess or shortfall of incentive-based compensation for commercial and delivery personnel as compared to target, restructuring and COVID-19 Charges, a portion of depreciation and amortization and the impact of the settlements of our cash flow hedges are not allocated to individual segments in internal management reports used by the chief operating decision maker. Accordingly, such expenses are excluded from segment operating profit and are included below as “unallocated costs” and adjusted against our total income from operations. Additionally, management has determined that it is not practical to allocate identifiable assets by segment, since such assets are used interchangeably among the segments. For revenues by reportable segment and geographic area, see Note 2 . Segment operating profits by reportable segment were as follows: Three Months Ended Nine Months Ended (in millions) 2021 2020 2021 2020 Financial Services $ 463 $ 463 $ 1,308 $ 1,209 Healthcare 383 378 1,182 1,004 Products and Resources 351 307 988 805 Communications, Media and Technology 253 191 703 555 Total segment operating profit 1,450 1,339 4,181 3,573 Less: unallocated costs 721 736 2,087 1,924 Income from operations $ 729 $ 603 $ 2,094 $ 1,649 Geographic Area Information Long-lived assets by geographic area are as follows: As of (in millions) September 30, 2021 December 31, 2020 Long-lived Assets: (1) North America (2) $ 366 $ 399 Europe 80 88 Rest of World (3) 733 764 Total $ 1,179 $ 1,251 (1) Long-lived assets include property and equipment, net of accumulated depreciation and amortization. (2) Substantially all relates to the United States. (3) Substantially all relates to India.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	DividendOn October 26, 2021, our Board of Directors approved the Company's declaration of a $0.24 per share dividend with a record date of November 19, 2021 and a payment date of November 30, 2021.

Revenues (Tables)

Revenues (Tables)	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Capitalized Costs to Fulfill Contract with Customer	Costs to obtain contracts were immaterial for the periods disclosed. The following table presents information related to the capitalized costs to fulfill for the nine months ended September 30: (in millions) 2021 2020 Beginning balance $ 467 $ 485 Amortization expense (88) (71) Costs capitalized 38 78 Impairment (11) (10) Ending balance $ 406 $ 482
Contract with Customer, Asset and Liability	The table below shows significant movements in contract assets for the nine months ended September 30: (in millions) 2021 2020 Beginning balance $ 315 $ 334 Revenues recognized during the period but not billed 298 281 Amounts reclassified to trade accounts receivable (264) (282) Ending balance $ 349 $ 333 (in millions) 2021 2020 Beginning balance $ 419 $ 336 Amounts billed but not recognized as revenues 309 260 Revenues recognized related to the opening balance of deferred revenue (379) (279) Ending balance $ 349 $ 317
Disaggregation of Revenue	Three Months Ended Nine Months Ended (in millions) FS HC P&R CMT Total FS HC P&R CMT Total Geography: North America $ 1,075 $ 1,162 $ 749 $ 500 $ 3,486 $ 3,137 $ 3,394 $ 2,190 $ 1,420 $ 10,141 United Kingdom 140 44 125 121 430 395 129 347 332 1,203 Continental Europe 187 118 145 34 484 565 356 380 121 1,422 Europe - Total 327 162 270 155 914 960 485 727 453 2,625 Rest of World 142 30 88 84 344 407 88 243 226 964 Total $ 1,544 $ 1,354 $ 1,107 $ 739 $ 4,744 $ 4,504 $ 3,967 $ 3,160 $ 2,099 $ 13,730 Service line: Consulting and technology services $ 1,049 $ 785 $ 715 $ 441 $ 2,990 $ 3,028 $ 2,299 $ 1,999 $ 1,259 $ 8,585 Outsourcing services 495 569 392 298 1,754 1,476 1,668 1,161 840 5,145 Total $ 1,544 $ 1,354 $ 1,107 $ 739 $ 4,744 $ 4,504 $ 3,967 $ 3,160 $ 2,099 $ 13,730 Type of contract: Time and materials $ 922 $ 515 $ 468 $ 437 $ 2,342 $ 2,729 $ 1,548 $ 1,332 $ 1,256 $ 6,865 Fixed-price 527 554 530 265 1,876 1,498 1,582 1,517 744 5,341 Transaction or volume-based 95 285 109 37 526 277 837 311 99 1,524 Total $ 1,544 $ 1,354 $ 1,107 $ 739 $ 4,744 $ 4,504 $ 3,967 $ 3,160 $ 2,099 $ 13,730 Three Months Ended Nine Months Ended (in millions) FS HC P&R CMT Total FS HC P&R CMT Total Geography: North America $ 1,033 $ 1,054 $ 666 $ 426 $ 3,179 $ 3,023 $ 3,091 $ 1,975 $ 1,286 $ 9,375 United Kingdom 123 40 96 86 345 353 116 278 249 996 Continental Europe 181 116 97 43 437 554 317 300 122 1,293 Europe - Total 304 156 193 129 782 907 433 578 371 2,289 Rest of World 132 21 68 61 282 386 58 195 165 804 Total $ 1,469 $ 1,231 $ 927 $ 616 $ 4,243 $ 4,316 $ 3,582 $ 2,748 $ 1,822 $ 12,468 Service line: Consulting and technology services $ 984 $ 725 $ 564 $ 369 $ 2,642 $ 2,864 $ 2,053 $ 1,674 $ 1,055 $ 7,646 Outsourcing services 485 506 363 247 1,601 1,452 1,529 1,074 767 4,822 Total $ 1,469 $ 1,231 $ 927 $ 616 $ 4,243 $ 4,316 $ 3,582 $ 2,748 $ 1,822 $ 12,468 Type of contract: Time and materials $ 932 $ 505 $ 392 $ 372 $ 2,201 $ 2,689 $ 1,448 $ 1,164 $ 1,112 $ 6,413 Fixed price 450 466 434 218 1,568 1,377 1,292 1,286 638 4,593 Transaction or volume-based 87 260 101 26 474 250 842 298 72 1,462 Total $ 1,469 $ 1,231 $ 927 $ 616 $ 4,243 $ 4,316 $ 3,582 $ 2,748 $ 1,822 $ 12,468
Reinsurance Recoverable, Allowance for Credit Loss	The following table presents the activity in the allowance for trade accounts receivable for the nine months ended September 30: (in millions) 2021 2020 Beginning balance $ 57 $ 67 Impact of adoption of the Credit Loss Standard — (1) Credit loss expense 5 18 Write-offs charged against the allowance (12) (11) Ending balance $ 50 $ 73

Business Combinations (Tables)

Business Combinations (Tables)	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The allocations of preliminary purchase price to the fair value of the aggregate assets acquired and li abilities assumed were as follows: (in millions) Servian Magenic ESG Mobility Linium Other Total Weighted Average Useful Life Cash $ 4 $ 13 $ 28 $ — $ 2 $ 47 Trade accounts receivable 15 17 24 5 12 73 Property and equipment and other assets 6 4 8 1 4 23 Operating lease assets, net 5 10 27 — 1 43 Non-deductible goodwill 180 10 31 — 16 237 Tax-deductible goodwill — 138 24 57 10 229 Customer relationship assets 77 90 77 24 32 300 10.0 years Other intangible assets 2 1 — — — 3 3.8 years Current liabilities (12) (30) (20) (2) (7) (71) Noncurrent liabilities (29) (7) (65) — (5) (106) Purchase price, inclusive of contingent consideration $ 248 $ 246 $ 134 $ 85 $ 65 $ 778

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2021
Investments [Abstract]
Marketable Securities	Our investments were as follows: (in millions) September 30, 2021 December 31, 2020 Short-term investments: Equity investment security $ 27 $ 27 Available-for-sale investment securities 295 — Held-to-maturity investment securities 23 14 Time deposits 404 3 Total short-term investments $ 749 $ 44 Long-term investments: Equity and cost method investments $ 67 $ 35 Restricted time deposits (1) 399 405 Total long-term investments $ 466 $ 440 (1) See Note 8 .
Unrealized Gain (Loss) on Investments	The amortized cost and fair value of held-to-maturity investment securities were as follows: (in millions) September 30, 2021 December 31, 2020 Amortized Fair Amortized Fair Short-term investments, maturing within one year: Corporate and other debt securities $ 3 $ 3 $ 14 $ 14 Commercial paper 20 20 — — Total short-term held-to-maturity investments $ 23 $ 23 $ 14 $ 14

Accrued Expenses And Other Cu_2

Accrued Expenses And Other Current Liabilities (Tables)	9 Months Ended
	Sep. 30, 2021
Payables and Accruals [Abstract]
Accrued Expenses And Other Current Liabilities	Accrued expenses and other current liabilities were as follows: (in millions) September 30, 2021 December 31, 2020 Compensation and benefits $ 1,578 $ 1,607 Customer volume and other incentives 267 266 Income taxes 35 34 Professional fees 189 143 Other 349 469 Total accrued expenses and other current liabilities $ 2,418 $ 2,519

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Summary of Long-term Debt	The following summarizes our long-term debt balances as of: (in millions) September 30, 2021 December 31, 2020 Term Loan $ 676 $ 703 Less: Current maturities - Term Loan (38) (38) Deferred financing costs (2) (2) Long-term debt, net of current maturities $ 636 $ 663

Income Taxes Income Taxes (Tabl

Income Taxes Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rates	Our effective income tax rates were as follows: Three Months Ended Nine Months Ended 2021 2020 2021 2020 Effective income tax rate 25.6 % 44.2 % 25.4 % 33.9 %

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Location And Fair Values Of Derivative Financial Instruments In Our Condensed Consolidated Statements Of Financial Position	The following table provides information on the location and fair values of derivative financial instruments included in our unaudited consolidated statements of financial position as of: (in millions) September 30, 2021 December 31, 2020 Designation of Derivatives Location on Statement of Assets Liabilities Assets Liabilities Foreign exchange forward and option contracts – Designated as cash flow hedging instruments Other current assets $ 46 $ — $ 45 $ — Other noncurrent assets 13 — 26 — Other noncurrent liabilities — 1 — — Total 59 1 71 — Foreign exchange forward contracts – Not designated as hedging instruments Other current assets 8 — 1 — Accrued expenses and other current liabilities — 2 — 1 Total 8 2 1 1 Total $ 67 $ 3 $ 72 $ 1
Notional value of outstanding contracts by year of maturity	The notional values of our outstanding contracts by year of maturity were as follows: (in millions) September 30, 2021 December 31, 2020 2021 $ 467 $ 1,470 2022 1,288 803 2023 555 — Total notional value of contracts outstanding (1) $ 2,310 $ 2,273
Location And Amounts Of Pre-Tax Gains (Losses) on Cash Flow Hedges	The following table provides information on the location and amounts of pre-tax gains and losses on our cash flow hedges for the three months ended September 30: (in millions) Change in Location of Net Gains Reclassified Net Gains Reclassified 2021 2020 2021 2020 Foreign exchange forward and option contracts – Designated as cash flow hedging instruments $ 33 $ 77 Cost of revenues $ 13 $ 5 SG&A expenses 2 1 Total $ 15 $ 6 The following table provides information on the location and amounts of pre-tax gains and losses on our cash flow hedges for the nine months ended September 30: (in millions) Change in Location of Net Gains (Losses) Reclassified Net Gains (Losses) Reclassified 2021 2020 2021 2020 Foreign exchange forward and option contracts – Designated as cash flow hedging instruments $ 47 $ (1) Cost of revenues $ 43 $ (7) SG&A expenses 7 (1) Total $ 50 $ (8)
Additional Information Related To Outstanding Contracts Not Designated As Hedging Instruments	Additional information related to our outstanding foreign exchange forward contracts not designated as hedging instruments was as follows: (in millions) September 30, 2021 December 31, 2020 Notional Fair Value Notional Fair Value Contracts outstanding $ 919 $ 6 $ 637 $ —
Location And Amounts Of Pre-Tax Gains (Losses) On Derivative Financial Instruments Not Designated As Hedges	The following table provides information on the location and amounts of realized and unrealized pre-tax gains and losses on our other derivative financial instruments for the three and nine months ended September 30: Location of Net Gains (Losses) on Amount of Net Gains (Losses) on Derivative Instruments Three Months Ended Nine Months Ended (in millions) 2021 2020 2021 2020 Foreign exchange forward contracts – Not designated as hedging instruments Foreign currency exchange gains (losses), net $ 1 $ (57) $ 7 $ (54)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Financial Assets And (Liabilities) Measured At Fair Value On A Recurring Basis	The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of September 30, 2021: (in millions) Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 582 $ — $ — $ 582 Time deposits — 4 — 4 Commercial paper — 290 — 290 Short-term investments: Time deposits — 404 — 404 Equity investment security 27 — — 27 Available-for-sale investment securities: Commercial paper — 295 — 295 Other current assets: Foreign exchange forward and option contracts — 54 — 54 Long-term investments: Restricted time deposits (1) — 399 — 399 Other noncurrent assets Foreign exchange forward contracts — 13 — 13 Accrued expenses and other current liabilities: Foreign exchange forward contracts — (2) — (2) Contingent consideration liabilities — — (29) (29) Other noncurrent liabilities: Foreign exchange forward contracts — (1) — (1) Contingent consideration liabilities — — (9) (9) (1) See Note 8 . The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of December 31, 2020: (in millions) Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 209 $ — $ — $ 209 Time deposits — 203 — 203 Commercial paper — 200 — 200 Short-term investments: Time deposits — 3 — 3 Equity investment security 27 — — 27 Other current assets: Foreign exchange forward and option contracts — 46 — 46 Long-term investments: Restricted time deposits (1) — 405 — 405 Other noncurrent assets: Foreign exchange forward and option contracts — 26 — 26 Accrued expenses and other current liabilities: Foreign exchange forward and option contracts — (1) — (1) Contingent consideration liabilities — — (11) (11) Other noncurrent liabilities: Contingent consideration liabilities — — (43) (43) (1) Se e Note 8 .
Summary of Changes in Level 3 Contingent Consideration Liabilities	The following table summarizes the changes in Level 3 contingent consideration liabilities for the nine months ended September 30 : (in millions) 2021 2020 Beginning balance $ 54 $ 38 Initial measurement recognized at acquisition 11 42 Change in fair value recognized in SG&A expenses (24) (24) Payments (3) (3) Ending balance $ 38 $ 53

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Changes in "Accumulated other comprehensive income (loss)" by component were as follows for the three and nine months ended September 30, 2021: Three Months Nine Months (in millions) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Foreign currency translation adjustments: Beginning balance $ 44 $ — $ 44 $ 56 $ (1) $ 55 Change in foreign currency translation adjustments (65) 2 (63) (77) 3 (74) Ending balance $ (21) $ 2 $ (19) $ (21) $ 2 $ (19) Unrealized gains on cash flow hedges: Beginning balance $ 46 $ (8) $ 38 $ 67 $ (12) $ 55 Unrealized gains arising during the period 33 (6) 27 47 (9) 38 Reclassifications of net (gains) to: Cost of revenues (13) 2 (11) (43) 8 (35) SG&A expenses (2) — (2) (7) 1 (6) Net change 18 (4) 14 (3) — (3) Ending balance $ 64 $ (12) $ 52 $ 64 $ (12) $ 52 Accumulated other comprehensive income (loss): Beginning balance $ 90 $ (8) $ 82 $ 123 $ (13) $ 110 Other comprehensive income (loss) (47) (2) (49) (80) 3 (77) Ending balance $ 43 $ (10) $ 33 $ 43 $ (10) $ 33 Changes in "Accumulated other comprehensive income (loss)" by component were as follows for the three and nine months ended September 30, 2020: Three Months Nine Months (in millions) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Foreign currency translation adjustments: Beginning balance $ (165) $ 4 $ (161) $ (63) $ (1) $ (64) Change in foreign currency translation adjustments 93 (3) 90 (9) 2 (7) Ending balance $ (72) $ 1 $ (71) $ (72) $ 1 $ (71) Unrealized (losses) gains on cash flow hedges: Beginning balance $ (33) $ 6 $ (27) $ 31 $ (5) $ 26 Unrealized gains (losses) arising during the period 77 (14) 63 (1) (1) (2) Reclassifications of net (gains) losses to: Cost of revenues (5) 1 (4) 7 (1) 6 SG&A expenses (1) — (1) 1 — 1 Net change 71 (13) 58 7 (2) 5 Ending balance $ 38 $ (7) $ 31 $ 38 $ (7) $ 31 Accumulated other comprehensive income (loss): Beginning balance $ (198) $ 10 $ (188) $ (32) $ (6) $ (38) Other comprehensive income (loss) 164 (16) 148 (2) — (2) Ending balance $ (34) $ (6) $ (40) $ (34) $ (6) $ (40)

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Segment Operating Profit	Segment operating profits by reportable segment were as follows: Three Months Ended Nine Months Ended (in millions) 2021 2020 2021 2020 Financial Services $ 463 $ 463 $ 1,308 $ 1,209 Healthcare 383 378 1,182 1,004 Products and Resources 351 307 988 805 Communications, Media and Technology 253 191 703 555 Total segment operating profit 1,450 1,339 4,181 3,573 Less: unallocated costs 721 736 2,087 1,924 Income from operations $ 729 $ 603 $ 2,094 $ 1,649
Revenues And Long-Lived Assets By Geographic Area	Long-lived assets by geographic area are as follows: As of (in millions) September 30, 2021 December 31, 2020 Long-lived Assets: (1) North America (2) $ 366 $ 399 Europe 80 88 Rest of World (3) 733 764 Total $ 1,179 $ 1,251 (1) Long-lived assets include property and equipment, net of accumulated depreciation and amortization. (2) Substantially all relates to the United States. (3) Substantially all relates to India.

Interim Consolidated Financia_2

Interim Consolidated Financial Statements (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	$ 11,479	$ 10,689
Trade accounts receivable, net	$ 3,510	$ 3,087

Revenues - Capitalized Costs to

Revenues - Capitalized Costs to Fulfill Contract with Customer (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Revenue from Contract with Customer [Abstract]
Beginning balance	$ 467	$ 485
Amortization expense	88	71
Costs capitalized	38	78
Impairment	(11)	(10)
Ending balance	$ 406	$ 482

Revenues - Significant Movement

Revenues - Significant Movements in Contract Assets (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Revenue from Contract with Customer [Abstract]
Beginning balance	$ 315	$ 334
Revenues recognized during the period but not billed	298	281
Amounts reclassified to trade accounts receivable	264	282
Ending balance	$ 349	$ 333

Revenues - Significant Moveme_2

Revenues - Significant Movements in Deferred Revenue Balances (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Revenue from Contract with Customer [Abstract]
Beginning balance	$ 419	$ 336
Amounts billed but not recognized as revenues	309	260
Revenues recognized related to the opening balance of deferred revenue	379	279
Ending balance	$ 349	$ 317

Revenues - Remaining Performanc

Revenues - Remaining Performance Obligations Narrative (Details) $ in Millions	Sep. 30, 2021USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation	$ 1,658
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	80.00%
Revenue, remaining performance obligation, period	2 years

Revenues - Disaggregation of Re

Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 4,744	$ 4,243	$ 13,730	$ 12,468
Time-and-materials [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,342	2,201	6,865	6,413
Fixed-price [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,876	1,568	5,341	4,593
Transaction or volume-based [Member]
Disaggregation of Revenue [Line Items]
Revenue	526	474	1,524	1,462
North America [Member]
Disaggregation of Revenue [Line Items]
Revenue	3,486	3,179	10,141	9,375
United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	430	345	1,203	996
Europe, excluding United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	484	437	1,422	1,293
Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	914	782	2,625	2,289
Rest of World [Member]
Disaggregation of Revenue [Line Items]
Revenue	344	282	964	804
Consulting And Technology Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,990	2,642	8,585	7,646
Outsourcing Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,754	1,601	5,145	4,822
Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,544	1,469	4,504	4,316
Financial Services [Member] | Time-and-materials [Member]
Disaggregation of Revenue [Line Items]
Revenue	922	932	2,729	2,689
Financial Services [Member] | Fixed-price [Member]
Disaggregation of Revenue [Line Items]
Revenue	527	450	1,498	1,377
Financial Services [Member] | Transaction or volume-based [Member]
Disaggregation of Revenue [Line Items]
Revenue	95	87	277	250
Financial Services [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,075	1,033	3,137	3,023
Financial Services [Member] | United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	140	123	395	353
Financial Services [Member] | Europe, excluding United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	187	181	565	554
Financial Services [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	327	304	960	907
Financial Services [Member] | Rest of World [Member]
Disaggregation of Revenue [Line Items]
Revenue	142	132	407	386
Financial Services [Member] | Consulting And Technology Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,049	984	3,028	2,864
Financial Services [Member] | Outsourcing Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	495	485	1,476	1,452
Products and Resources [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,107	927	3,160	2,748
Products and Resources [Member] | Time-and-materials [Member]
Disaggregation of Revenue [Line Items]
Revenue	468	392	1,332	1,164
Products and Resources [Member] | Fixed-price [Member]
Disaggregation of Revenue [Line Items]
Revenue	530	434	1,517	1,286
Products and Resources [Member] | Transaction or volume-based [Member]
Disaggregation of Revenue [Line Items]
Revenue	109	101	311	298
Products and Resources [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Revenue	749	666	2,190	1,975
Products and Resources [Member] | United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	125	96	347	278
Products and Resources [Member] | Europe, excluding United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	145	97	380	300
Products and Resources [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	270	193	727	578
Products and Resources [Member] | Rest of World [Member]
Disaggregation of Revenue [Line Items]
Revenue	88	68	243	195
Products and Resources [Member] | Consulting And Technology Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	715	564	1,999	1,674
Products and Resources [Member] | Outsourcing Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	392	363	1,161	1,074
Communication, Media and Technology [Member]
Disaggregation of Revenue [Line Items]
Revenue	739	616	2,099	1,822
Communication, Media and Technology [Member] | Time-and-materials [Member]
Disaggregation of Revenue [Line Items]
Revenue	437	372	1,256	1,112
Communication, Media and Technology [Member] | Fixed-price [Member]
Disaggregation of Revenue [Line Items]
Revenue	265	218	744	638
Communication, Media and Technology [Member] | Transaction or volume-based [Member]
Disaggregation of Revenue [Line Items]
Revenue	37	26	99	72
Communication, Media and Technology [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Revenue	500	426	1,420	1,286
Communication, Media and Technology [Member] | United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	121	86	332	249
Communication, Media and Technology [Member] | Europe, excluding United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	34	43	121	122
Communication, Media and Technology [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	155	129	453	371
Communication, Media and Technology [Member] | Rest of World [Member]
Disaggregation of Revenue [Line Items]
Revenue	84	61	226	165
Communication, Media and Technology [Member] | Consulting And Technology Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	441	369	1,259	1,055
Communication, Media and Technology [Member] | Outsourcing Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	298	247	840	767
Healthcare Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,354	1,231	3,967	3,582
Healthcare Segment [Member] | Time-and-materials [Member]
Disaggregation of Revenue [Line Items]
Revenue	515	505	1,548	1,448
Healthcare Segment [Member] | Fixed-price [Member]
Disaggregation of Revenue [Line Items]
Revenue	554	466	1,582	1,292
Healthcare Segment [Member] | Transaction or volume-based [Member]
Disaggregation of Revenue [Line Items]
Revenue	285	260	837	842
Healthcare Segment [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,162	1,054	3,394	3,091
Healthcare Segment [Member] | United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	44	40	129	116
Healthcare Segment [Member] | Europe, excluding United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	118	116	356	317
Healthcare Segment [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	162	156	485	433
Healthcare Segment [Member] | Rest of World [Member]
Disaggregation of Revenue [Line Items]
Revenue	30	21	88	58
Healthcare Segment [Member] | Consulting And Technology Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	785	725	2,299	2,053
Healthcare Segment [Member] | Outsourcing Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 569	$ 506	$ 1,668	$ 1,529

Revenues - Trade Accounts And A

Revenues - Trade Accounts And Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 57	$ 67
Credit loss expense	5	18
Write-offs charged against the allowance	(12)	(11)
Ending Balance	$ 50	73
Cumulative Effect, Period of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance		$ (1)

Business Combinations Narrative

Business Combinations Narrative (Details)	Sep. 30, 2021
Linium
Business Acquisition [Line Items]
Ownership percentage of recently acquired businesses	100.00%
Magenic
Business Acquisition [Line Items]
Ownership percentage of recently acquired businesses	100.00%
Servian
Business Acquisition [Line Items]
Ownership percentage of recently acquired businesses	100.00%
ESG Mobility
Business Acquisition [Line Items]
Ownership percentage of recently acquired businesses	100.00%
TQS
Business Acquisition [Line Items]
Ownership percentage of recently acquired businesses	100.00%
Hunter
Business Acquisition [Line Items]
Ownership percentage of recently acquired businesses	100.00%

Business Combinations Allocatio

Business Combinations Allocation of Purchase Price (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Business Acquisition [Line Items]
Cash	$ 47
Trade accounts receivable	73
Property and equipment and other assets	23
Operating lease assets, net	43
Non-deductible goodwill	237
Current liabilities	71
Noncurrent liabilities	106
Purchase price, inclusive of contingent consideration	778
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tax-Deductible Goodwill	229
Linium
Business Acquisition [Line Items]
Cash	0
Trade accounts receivable	5
Property and equipment and other assets	1
Operating lease assets, net	0
Non-deductible goodwill	0
Current liabilities	2
Noncurrent liabilities	0
Purchase price, inclusive of contingent consideration	85
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tax-Deductible Goodwill	57
Magenic
Business Acquisition [Line Items]
Cash	13
Trade accounts receivable	17
Property and equipment and other assets	4
Operating lease assets, net	10
Non-deductible goodwill	10
Current liabilities	30
Noncurrent liabilities	7
Purchase price, inclusive of contingent consideration	246
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tax-Deductible Goodwill	138
ESG Mobility
Business Acquisition [Line Items]
Cash	28
Trade accounts receivable	24
Property and equipment and other assets	8
Operating lease assets, net	27
Non-deductible goodwill	31
Current liabilities	20
Noncurrent liabilities	65
Purchase price, inclusive of contingent consideration	134
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tax-Deductible Goodwill	24
Servian
Business Acquisition [Line Items]
Cash	4
Trade accounts receivable	15
Property and equipment and other assets	6
Operating lease assets, net	5
Non-deductible goodwill	180
Current liabilities	12
Noncurrent liabilities	29
Purchase price, inclusive of contingent consideration	248
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tax-Deductible Goodwill	0
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Cash	2
Trade accounts receivable	12
Property and equipment and other assets	4
Operating lease assets, net	1
Non-deductible goodwill	16
Current liabilities	7
Noncurrent liabilities	5
Purchase price, inclusive of contingent consideration	65
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tax-Deductible Goodwill	10
Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 300
Weighted Average Useful Life	10 years
Customer Relationships [Member] | Linium
Business Acquisition [Line Items]
Intangible assets acquired	$ 24
Customer Relationships [Member] | Magenic
Business Acquisition [Line Items]
Intangible assets acquired	90
Customer Relationships [Member] | ESG Mobility
Business Acquisition [Line Items]
Intangible assets acquired	77
Customer Relationships [Member] | Servian
Business Acquisition [Line Items]
Intangible assets acquired	77
Customer Relationships [Member] | Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Intangible assets acquired	32
Other Intangible Assets [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 3
Weighted Average Useful Life	3 years 9 months 18 days
Other Intangible Assets [Member] | Linium
Business Acquisition [Line Items]
Intangible assets acquired	$ 0
Other Intangible Assets [Member] | Magenic
Business Acquisition [Line Items]
Intangible assets acquired	1
Other Intangible Assets [Member] | ESG Mobility
Business Acquisition [Line Items]
Intangible assets acquired	0
Other Intangible Assets [Member] | Servian
Business Acquisition [Line Items]
Intangible assets acquired	2
Other Intangible Assets [Member] | Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 0

Restructuring Charges (Details)

Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Realignment Program [Member]
Accrued Restructuring Costs
Restructuring costs incurred	$ 8	$ 40
2020 Fit for Growth [Member]
Accrued Restructuring Costs
Restructuring costs incurred	$ 43	$ 137

Investments (Details)

Investments (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Short-term investments:
Total short-term investments	$ 749	$ 44
Long-term investments:
Long-term Investments, Total	466	440
Short-term Investments [Member]
Short-term investments:
Equity investment security	27	27
Available-for-sale investment securities	295	0
Held-to-maturity investment securities	23	14
Time Deposits	404	3
Long-term investments:
Debt Securities, Available-for-sale, Amortized Cost	295
Long-term investments [Member]
Long-term investments:
Equity and Cost Method Investments	67	35
Restricted investments	$ 399	$ 405

Investments (Schedule of Held-t

Investments (Schedule of Held-to-Maturity Securities) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	$ 0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value		$ 0
Maximum
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	1
Corporate And Other Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	3
Commercial Paper [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	7
Short-term Investments [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity investment securities	23	14
Fair Value	23	14
Short-term Investments [Member] | Corporate And Other Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity investment securities	3	14
Fair Value	3	14
Short-term Investments [Member] | Commercial Paper [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity investment securities	20	0
Fair Value	$ 20	$ 0

Investments - Narrative (Detail

Investments - Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Schedule of Held-to-maturity Securities [Line Items]
Available for sale realized gain (loss)		$ 0	$ 0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	$ 0	0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value				$ 0
Payments to Acquire Equity Method Investments	32,000,000
Equity Method Investments	64,000,000	64,000,000		31,000,000
Cost method investments	3,000,000	3,000,000		4,000,000
Short-term Investments [Member]
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale investment securities	295,000,000	295,000,000		$ 0
Maximum
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	1,000,000	1,000,000
Corporate And Other Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	3,000,000	3,000,000
Commercial Paper [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 7,000,000	$ 7,000,000

Accrued Expenses And Other Cu_3

Accrued Expenses And Other Current Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Compensation and benefits	$ 1,578	$ 1,607
Customer volume and other incentives	267	266
Income taxes	35	34
Professional fees	189	143
Other	349	469
Total accrued expenses and other current liabilities	$ 2,418	$ 2,519

Debt (Additional Disclosures) (

Debt (Additional Disclosures) (Details) $ in Millions, ₨ in Billions	9 Months Ended
	Sep. 30, 2021USD ($)	Feb. 28, 2021INR (₨)	Nov. 30, 2018USD ($)
Credit Agreement [Member] | Term Loan [Member]
Line of Credit Facility [Line Items]
Principal amount of debt			$ 750
Eurodollar [Member] | Credit Agreement [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.875%
Eurodollar [Member] | Minimum | Credit Agreement [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.75%
Eurodollar [Member] | Maximum | Credit Agreement [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.125%
Base Rate [Member] | Credit Agreement [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.00%
Eurocurrency Without Debt Ratings [Member] | Minimum | Credit Agreement [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.875%
Eurocurrency Without Debt Ratings [Member] | Maximum | Credit Agreement [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.125%
Revolving Credit Facility [Member] | Credit Agreement [Member] | Unsecured Debt [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 1,750
Working Capital Facility [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 175	₨ 13

Debt (Short-term Debt) (Details

Debt (Short-term Debt) (Details) $ in Millions, ₨ in Billions	Sep. 30, 2021USD ($)	Feb. 28, 2021INR (₨)	Dec. 31, 2020USD ($)
Credit Agreement [Member] | Term Loan [Member]
Short-term Debt [Line Items]
Long-term Debt, Current Maturities	$ 38		$ 38
Working Capital Facility [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 175	₨ 13

Debt (Long-term Debt) (Details)

Debt (Long-term Debt) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt, net of current maturities	$ 636	$ 663
Credit Agreement [Member]
Debt Instrument [Line Items]
Deferred financing costs	(2)	(2)
Term Loan [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Term Loan	676	703
Current maturities	$ (38)	$ (38)

Income Taxes - Tax Rates (Detai

Income Taxes - Tax Rates (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Effective Income Tax Rates [Abstract]
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities		$ 43
Discrete tax benefit		14
Effective Income Tax Rate	25.60%		44.20%	25.40%	33.90%
Adjustment to current income tax balance as a result of settlement		$ 29

Income Taxes (Narrative) (One-t

Income Taxes (Narrative) (One-time Transaction) (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2013USD ($)	Dec. 31, 2020USD ($)	Apr. 30, 2018INR (₨)	Mar. 31, 2018INR (₨)
One-time Transaction [Table] [Line Items]
Income tax expense	$ 187	$ 276	$ 531	$ 552
Long-term investments [Member]
One-time Transaction [Table] [Line Items]
Restricted investments	399		399				$ 405
Tax On Accumulated Indian Earnings
One-time Transaction [Table] [Line Items]
Income tax expense		$ 140
Indian Income Tax Department (ITD) [Member] | Foreign tax authority [Member]
One-time Transaction [Table] [Line Items]
Deposits assets	$ 67		$ 67				68	₨ 5,000,000,000
Desposits assets, percent disputed tax amount	15.00%		15.00%
Restricted investments initially deposited	$ 378		$ 378				384	₨ 28,000,000,000
Indian Income Tax Department (ITD) [Member] | Foreign tax authority [Member] | Other Noncurrent Assets [Member]
One-time Transaction [Table] [Line Items]
Deposits assets	67		67				$ 68
Indian Income Tax Department (ITD) [Member] | Foreign tax authority [Member] | 2016 India Cash Remittance [Member]
One-time Transaction [Table] [Line Items]
Income tax expense					$ 135
Foreign earnings repatriated					$ 2,800
Income tax, disputed amount	$ 445		$ 445						₨ 33,000,000,000
Indian Income Tax Department (ITD) [Member] | Foreign tax authority [Member] | 2013 India Share Repurchase [Member]
One-time Transaction [Table] [Line Items]
Foreign earnings repatriated						$ 523

Derivative Financial Instrume_3

Derivative Financial Instruments (Location And Fair Values Of Derivative Financial Instruments In Our Consolidated Statement Of Financial Position) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Derivative assets fair value	$ 67	$ 72
Derivative liabilities fair value	3	1
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	8	1
Derivative liabilities fair value	2	1
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	8	1
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Accrued Expenses And Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities fair value	2	1
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract
Derivatives, Fair Value [Line Items]
Derivative assets fair value	59	71
Derivative liabilities fair value	1	0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	46	45
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Other Noncurrent Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	13	26
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities fair value	$ 1	$ 0

Derivative Financial Instrume_4

Derivative Financial Instruments (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Cash flow hedge gains (losses) expected to be reclassified to earnings within the next 12 months	$ 43

Derivative Financial Instrume_5

Derivative Financial Instruments (Notional Value Of Outstanding Cash Flow Hedge Contracts By Year Of Maturity And Net Unrealized (Loss) Gain Included In Accumulated Other Comprehensive Income) (Details) - Designated as Hedging Instrument [Member] - Cash Flow Hedging [Member] - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Foreign Exchange Contract
Derivative [Line Items]
Derivative, Notional Amount	$ 2,310	$ 2,273
Foreign Exchange Contract, Maturity 2021 [Member]
Derivative [Line Items]
Derivative, Notional Amount	467	1,470
Foreign Exchange Contract, Maturity 2022
Derivative [Line Items]
Derivative, Notional Amount	1,288	803
Foreign Exchange Contract, Maturity 2023
Derivative [Line Items]
Derivative, Notional Amount	555	0
Foreign Exchange Option [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 93	$ 133

Derivative Financial Instrume_6

Derivative Financial Instruments (Location And Amounts Of Pre-Tax Gains (Losses) On Cash Flow Hedge Derivatives Financial Instruments) (Details) - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	$ 15	$ 6	$ 50	$ (8)
Cost Of Revenues [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	13	5	43	(7)
Selling, General and Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	2	1	7	(1)
Foreign Exchange Contract
Derivative Instruments, Gain (Loss) [Line Items]
Change in Derivative Gains Recognized in Accumulated Other Comprehensive Income (Loss) (effective portion)	$ 33	$ 77	$ 47	$ (1)

Derivative Financial Instrume_7

Derivative Financial Instruments (Other Derivatives) (Details) - Not Designated as Hedging Instrument [Member] - Foreign Exchange Forward [Member] - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Market Value	$ 6	$ 0
Derivative, Notional Amount	$ 919	$ 637

Derivative Financial Instrume_8

Derivative Financial Instruments (Location And Amounts Of Pre-Tax Gains (Losses) On Derivative Financial Instruments Not Designated As Hedges) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Foreign Currency Exchange Gains (Losses), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of net gains (losses) on derivative instruments	$ 1	$ (57)	$ 7	$ (54)

Fair Value Measurements (Financ

Fair Value Measurements (Financial Assets And (Liabilities) Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	$ 27		$ 27
Long-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	399		405
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value	38	$ 53	54	$ 38
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances	11	42
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	(24)	(24)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements	(3)	$ (3)
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities			27
Recurring [Member] | Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	27
Available-for-sale securities, current	295
Recurring [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	54		46
Recurring [Member] | Accrued Expenses And Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liabilities	(29)
Derivative financial instruments, liabilities	(2)
Recurring [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	13		26
Recurring [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liabilities	(9)		(43)
Derivative financial instruments, liabilities	(1)
Recurring [Member] | Long-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	399		405
Recurring [Member] | Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liabilities			(11)
Derivative financial instruments, liabilities			(1)
Recurring [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	582		209
Recurring [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	290		200
Recurring [Member] | Time Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	4		203
Recurring [Member] | Level 1 [Member] | Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	27		27
Available-for-sale securities, current	0
Recurring [Member] | Level 1 [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	0		0
Recurring [Member] | Level 1 [Member] | Accrued Expenses And Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liabilities	0
Derivative financial instruments, liabilities	0
Recurring [Member] | Level 1 [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	0		0
Recurring [Member] | Level 1 [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liabilities	0		0
Derivative financial instruments, liabilities	0
Recurring [Member] | Level 1 [Member] | Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liabilities			0
Derivative financial instruments, liabilities			0
Recurring [Member] | Level 1 [Member] | Money Market Funds [Member] | Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	582		209
Recurring [Member] | Level 2 [Member] | Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0		0
Available-for-sale securities, current	295
Recurring [Member] | Level 2 [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	54		46
Recurring [Member] | Level 2 [Member] | Accrued Expenses And Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liabilities	0
Derivative financial instruments, liabilities	(2)
Recurring [Member] | Level 2 [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	13		26
Recurring [Member] | Level 2 [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liabilities	0		0
Derivative financial instruments, liabilities	(1)
Recurring [Member] | Level 2 [Member] | Long-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	399		405
Recurring [Member] | Level 2 [Member] | Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liabilities			0
Derivative financial instruments, liabilities			(1)
Recurring [Member] | Level 2 [Member] | Commercial Paper [Member] | Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	290		200
Recurring [Member] | Level 2 [Member] | Time Deposits | Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	4		203
Recurring [Member] | Level 3 [Member] | Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0		0
Available-for-sale securities, current	0
Recurring [Member] | Level 3 [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	0		0
Recurring [Member] | Level 3 [Member] | Accrued Expenses And Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liabilities	(29)
Derivative financial instruments, liabilities	0
Recurring [Member] | Level 3 [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	0		0
Recurring [Member] | Level 3 [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liabilities	(9)		(43)
Derivative financial instruments, liabilities	0
Recurring [Member] | Level 3 [Member] | Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liabilities			(11)
Derivative financial instruments, liabilities			0
Time Deposits | Recurring [Member] | Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short term investments	404		3
Time Deposits | Recurring [Member] | Level 1 [Member] | Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short term investments	0		0
Time Deposits | Recurring [Member] | Level 2 [Member] | Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short term investments	404		3
Time Deposits | Recurring [Member] | Level 3 [Member] | Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short term investments	$ 0		$ 0

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	$ 11,205	$ 11,037	$ 10,836	$ 10,972	$ 10,613	$ 11,022	$ 10,836	$ 11,022
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change, Net of Tax Amount	(63)			90			(74)	(7)
Other comprehensive income (loss)	(49)			148			(77)	(2)
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Total stockholders’ equity	11,546	11,205	11,037	11,140	10,972	10,613	11,546	11,140
Foreign currency translation adjustments: [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before tax, beginning balance	44		56	(165)		(63)	56	(63)
AOCI tax, beginning balance	0		(1)	4		(1)	(1)	(1)
AOCI, beginning balance	44		55	(161)		(64)	55	(64)
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change, Before Tax Amount	(65)			93			(77)	(9)
Net change, Tax Effect	2			(3)			3	2
Other comprehensive income (loss)	(63)			90				(7)
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
AOCI before tax, ending balance	(21)	44		(72)	(165)		(21)	(72)
AOCI tax, ending balance	2	0		1	4		2	1
Total stockholders’ equity	(19)	44		(71)	(161)		(19)	(71)
Unrealized gains on cash flow hedges: [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before tax, beginning balance	46		67	(33)		31	67	31
AOCI tax, beginning balance	(8)		(12)	6		(5)	(12)	(5)
AOCI, beginning balance	38		55	(27)		26	55	26
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change, Before Tax Amount	18			71			(3)	7
Net change, Tax Effect	(4)			(13)			0	(2)
Other comprehensive income (loss)	14			58			(3)	5
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
OCI, before reclassifications, before tax	33			77			47	(1)
Other comprehensive income (loss) before reclassifications, tax	(6)			(14)			(9)	(1)
OCI, before reclassifications, net of tax	27			63			38	(2)
AOCI before tax, ending balance	64	46		38	(33)		64	38
AOCI tax, ending balance	(12)	(8)		(7)	6		(12)	(7)
Total stockholders’ equity	52	38		31	(27)		52	31
Unrealized gains on cash flow hedges: [Member] | Cost of revenues [Member]
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Reclassification from AOCI, current period, before tax	(13)			(5)			(43)	7
Reclassification from AOCI, current period, tax	2			1			8	(1)
Reclassification from AOCI, current period, net of tax	(11)			(4)			(35)	6
Unrealized gains on cash flow hedges: [Member] | Selling, general and administrative expenses [Member]
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Reclassification from AOCI, current period, before tax	(2)			(1)			(7)	1
Reclassification from AOCI, current period, tax	0			0			1	0
Reclassification from AOCI, current period, net of tax	(2)			(1)			(6)	1
Accumulated other comprehensive income (loss):
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before tax, beginning balance	90		123	(198)		(32)	123	(32)
AOCI tax, beginning balance	(8)		(13)	10		(6)	(13)	(6)
AOCI, beginning balance	82	81	110	(188)	(264)	(38)	110	(38)
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change, Before Tax Amount	(47)			164			(80)	(2)
Net change, Tax Effect	(2)			(16)			3	0
Other comprehensive income (loss)	(49)	1	(29)	148	76	(226)	(77)	(2)
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
AOCI before tax, ending balance	43	90		(34)	(198)		43	(34)
AOCI tax, ending balance	(10)	(8)		(6)	10		(10)	(6)
Total stockholders’ equity	$ 33	$ 82	$ 81	$ (40)	$ (188)	$ (264)	$ 33	$ (40)

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($) $ in Millions	Sep. 07, 2021	Apr. 20, 2021	Oct. 27, 2020	Sep. 30, 2021	Dec. 31, 2020	Mar. 31, 2019
Other Commitments [Line Items]
Accrued Liabilities and Other Liabilities				$ 2,418	$ 2,519
Syntel Sterling Best Shores Mauritius Ltd. [Member]
Other Commitments [Line Items]
Litigation settlement, amount awarded from other party		$ 570	$ 855
Litigation Settlement Amount Awarded From Other Party, Punitive Damages		285	$ 570
Litigation Settlement Amount Awarded From Other Party, Actual Damages		$ 285
Consolidated Putative Securities Class Action
Other Commitments [Line Items]
Litigation Settlement, Amount Awarded to Other Party	$ 95
Executive Insurance Policy, Insurance Reserve	75
Gain (Loss) Related to Litigation Settlement	$ 20
India Defined Contribution Obligation [Member]
Other Commitments [Line Items]
Accrued Liabilities and Other Liabilities						$ 117

Segment Information (Revenues F

Segment Information (Revenues From External Customers And Segment Operating Profit) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Income from operations	$ 729	$ 603	$ 2,094	$ 1,649
Operating Segments [Member]
Segment Reporting Information [Line Items]
Income from operations	1,450	1,339	4,181	3,573
Operating Segments [Member] | Financial Services [Member]
Segment Reporting Information [Line Items]
Income from operations	463	463	1,308	1,209
Operating Segments [Member] | Healthcare Segment [Member]
Segment Reporting Information [Line Items]
Income from operations	383	378	1,182	1,004
Operating Segments [Member] | Products and Resources [Member]
Segment Reporting Information [Line Items]
Income from operations	351	307	988	805
Operating Segments [Member] | Communications, Media and Technology [Member]
Segment Reporting Information [Line Items]
Income from operations	253	191	703	555
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Unallocated costs	$ 721	$ 736	$ 2,087	$ 1,924

Segment Information (Long-Lived

Segment Information (Long-Lived Assets By Geographic Area) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Long-Lived Assets [Line Items]
Long-lived Assets	$ 1,179	$ 1,251
North America [Member]
Long-Lived Assets [Line Items]
Long-lived Assets	366	399
Europe [Member]
Long-Lived Assets [Line Items]
Long-lived Assets	80	88
Rest of World [Member]
Long-Lived Assets [Line Items]
Long-lived Assets	$ 733	$ 764

Subsequent Events (Details)

Subsequent Events (Details) - $ / shares	Oct. 26, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Subsequent Event [Line Items]
Dividends declared per common share (in usd per share)		$ 0.24	$ 0.24	$ 0.24	$ 0.22	$ 0.22	$ 0.22
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends declared per common share (in usd per share)	$ 0.24