Cognizant Technology Solutions (CTSH) 10-Q 3 May 19 2019 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 26, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Trading Symbol	CTSH
Entity Registrant Name	COGNIZANT TECHNOLOGY SOLUTIONS CORPORATION
Entity Central Index Key	0001058290
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		569,282,940

Consolidated Statements Of Fina

Consolidated Statements Of Financial Position (Unaudited) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 950	$ 1,161
Short-term investments	2,718	3,350
Trade accounts receivable, net of allowances of $92 and $78, respectively	3,377	3,257
Other current assets	838	909
Total current assets	7,883	8,677
Property and equipment, net	1,314	1,394
Operating lease assets, net	809
Goodwill	3,638	3,481
Intangible assets, net	1,185	1,150
Deferred income tax assets, net	464	442
Long-term investments	79	80
Other noncurrent assets	724	689
Total assets	16,096	15,913
Current liabilities:
Accounts payable	262	215
Deferred revenue	340	286
Short-term debt	19	9
Operating lease liabilities	184
Accrued expenses and other current liabilities	1,915	2,267
Total current liabilities	2,720	2,777
Deferred revenue, noncurrent	64	62
Operating lease liabilities, noncurrent	651
Deferred income tax liabilities, net	177	183
Long-term debt	727	736
Long-term income taxes payable	471	478
Other noncurrent liabilities	150	253
Total liabilities	4,960	4,489
Commitments and contingencies (See Note 13)
Stockholders’ equity:
Preferred stock, $0.10 par value, 15.0 shares authorized, none issued	0	0
Class A common stock, $0.01 par value, 1,000 shares authorized, 569 and 577 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively	6	6
Additional paid-in capital	64	47
Retained earnings	11,140	11,485
Accumulated other comprehensive income (loss)	(74)	(114)
Total stockholders’ equity	11,136	11,424
Total liabilities and stockholders’ equity	$ 16,096	$ 15,913

Consolidated Statements Of Fi_2

Consolidated Statements Of Financial Position (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Trade accounts receivable, allowances	$ 92	$ 78
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares authorized	15,000,000	15,000,000
Preferred stock, issued	0	0
Class A common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Class A common stock, shares authorized	1,000,000,000	1,000,000,000
Class A common stock, shares issued	569,000,000	577,000,000
Class A common stock, shares outstanding	569,000,000	577,000,000

Consolidated Statements Of Oper

Consolidated Statements Of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenues	$ 4,110	$ 3,912
Operating expenses:
Cost of revenues (exclusive of depreciation and amortization expense shown separately below)	2,575	2,401
Selling, general and administrative expenses	873	711
Depreciation and amortization expense	123	107
Income from operations	539	693
Other income (expense), net:
Interest income	48	41
Interest expense	(7)	(6)
Foreign currency exchange gains (losses), net	2	(31)
Other, net	1	0
Total other income (expense), net	44	4
Income before provision for income taxes	583	697
Provision for income taxes	(142)	(177)
Net income	$ 441	$ 520
Basic earnings per share (usd per share)	$ 0.77	$ 0.89
Diluted earnings per share (usd per share)	$ 0.77	$ 0.88
Weighted average number of common shares outstanding - Basic (shares)	573	587
Dilutive effect of shares issuable under stock-based compensation plans (shares)	2	2
Weighted average number of common shares outstanding - Diluted (shares)	575	589

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 441	$ 520
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(2)	37
Change in unrealized gains and losses on cash flow hedges	36	(36)
Change in unrealized gains and losses on available-for-sale securities	6	(7)
Other comprehensive income (loss)	40	(6)
Comprehensive income	$ 481	$ 514

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated other comprehensive income (loss):
AOCI, beginning balance at Dec. 31, 2017	$ 10,669	$ 6	$ 49	$ 10,544	$ 70
Beginning balance, shares at Dec. 31, 2017		588
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	520			520
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(6)				(7)
Other comprehensive income (loss)	(6)				(6)
Common stock issued, stock-based compensation plans - value	60		60
Common stock issued, stock-based compensation plans - shares		2
Stock-based compensation expense	59		59
Repurchases of common stock, Value	(316)		(105)	(211)
Repurchases of common stock, Shares		(4)
Dividends declared, $0.20 per share	(119)			(119)
AOCI, ending balance at Mar. 31, 2018	10,988	$ 6	63	10,856	63
Ending balance, shares at Mar. 31, 2018		586
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of changes in accounting principle	121			122	(1)
AOCI, beginning balance at Dec. 31, 2018	$ 11,424	$ 6	47	11,485	(114)
Beginning balance, shares at Dec. 31, 2018	577	577
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 441
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	40				40
Other comprehensive income (loss)	40
Common stock issued, stock-based compensation plans - value	50		50
Common stock issued, stock-based compensation plans - shares		2
Stock-based compensation expense	66		66
Repurchases of common stock, Value	(771)		(99)	(672)
Repurchases of common stock, Shares		(10)
Dividends declared, $0.20 per share	(116)			(116)
AOCI, ending balance at Mar. 31, 2019	$ 11,136	$ 6	$ 64	11,140	$ (74)
Ending balance, shares at Mar. 31, 2019	569	569
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of changes in accounting principle	$ 2			$ 2

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 441	$ 520
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	133	117
Provision for doubtful accounts	14	2
Deferred income taxes	(42)	2
Stock-based compensation expense	66	59
Other	(21)	23
Changes in assets and liabilities:
Trade accounts receivable	(131)	(273)
Other current and noncurrent assets	90	247
Accounts payable	49	86
Deferred revenues, current and noncurrent	56	(2)
Other current and noncurrent liabilities	(386)	(393)
Net cash provided by operating activities	269	388
Cash flows from investing activities:
Purchases of property and equipment	(106)	(96)
Purchases of available-for-sale investment securities	(243)	(300)
Proceeds from maturity or sale of available-for-sale investment securities	650	193
Purchases of held-to-maturity investment securities	(94)	(222)
Proceeds from maturity of held-to-maturity investment securities	348	171
Purchases of other investments	(31)	(31)
Proceeds from maturity or sale of other investments	29	59
Payments for business combinations, net of cash acquired	(197)	(1)
Net cash provided by (used in) investing activities	356	(227)
Cash flows from financing activities:
Issuance of common stock under stock-based compensation plans	50	60
Repurchases of common stock	(771)	(316)
Repayment of term loan borrowings and finance lease obligations	(2)	(39)
Net change in notes outstanding under the revolving credit facility	0	(75)
Dividends paid	(116)	(118)
Net cash (used in) financing activities	(839)	(488)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	3	1
(Decrease) in cash, cash equivalents and restricted cash	(211)	(326)
Cash and cash equivalents, beginning of year	1,161	1,925
Cash, cash equivalents and restricted cash, end of period	$ 950	$ 1,599

Interim Consolidated Financial

Interim Consolidated Financial Statements	3 Months Ended
	Mar. 31, 2019
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 generally accepted accounting principles in the United States of America ("GAAP"), and Regulation S-X under the Securities Exchange Act of 1934, (as amended, the "Exchange Act"). The accompanying unaudited consolidated financial statements should be read in conjunction with our audited consolidated financial statements (and notes thereto) included in our Annual Report on Form 10-K for the year ended December 31, 2018 . 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. Recently Adopted Accounting Pronouncements Date Issued and Topic Date Adopted and Method Description Impact February 2016 January 1, 2019 Effective Date Method The new standard replaces the existing guidance on leases and requires the lessee to recognize a right-of-use ("ROU") asset and a lease liability for all leases with lease terms equal to or greater than twelve months. For finance leases, the lessee recognizes interest expense and amortization of the ROU asset, and for operating leases, the lessee recognizes total lease expense on a straight-line basis. The standard offers several practical expedients for transition and certain expedients specific to lessees or lessors. The standard allows for two methods of adoption: retrospective to each prior reporting period presented with the cumulative effect of adoption recognized at the beginning of the earliest period presented or retrospective to the beginning of the period of adoption through a cumulative-effect adjustment (the "Effective Date Method"). See Note 6 for the impact of adoption of this standard. March 2017 January 1, 2019 Modified Retrospective This update shortens the amortization period for certain callable debt securities held at a premium to the earliest call date. The amendments do not require an accounting change for securities held at a discount. Upon adoption, entities are required to use a modified retrospective transition with the cumulative effect adjustment recognized to retained earnings as of the beginning of the period of adoption. The adoption of this update did not have an impact on our financial statements. August 2018 Early adoption on January 1, 2019 Prospective This update aligns the accounting for costs incurred to implement a CCA that is a service arrangement with the guidance on capitalizing costs associated with developing or obtaining internal-use software. In addition, this update clarifies the financial statement presentation requirement for capitalized implementation costs and related amortization of such costs. The adoption of this update did not have an impact on our financial statements.

Revenues

Revenues	3 Months Ended
	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenues	Disaggregation of Revenues The table below presents disaggregated revenues from contracts with customers by customer 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 regions based upon customer location. Substantially all of the revenue in our North America region relates to operations in the United States. Three Months Ended Financial Services Healthcare Products and Resources Communications, Media and Technology Total (in millions) Revenues Geography: North America $ 1,018 $ 1,042 $ 641 $ 422 $ 3,123 United Kingdom 129 25 94 81 329 Rest of Europe 162 82 115 46 405 Europe - Total 291 107 209 127 734 Rest of World 127 16 64 46 253 Total $ 1,436 $ 1,165 $ 914 $ 595 $ 4,110 Service line: Consulting and technology services $ 913 $ 638 $ 552 $ 306 $ 2,409 Outsourcing services 523 527 362 289 1,701 Total $ 1,436 $ 1,165 $ 914 $ 595 $ 4,110 Type of contract: Time and materials $ 919 $ 458 $ 400 $ 375 $ 2,152 Fixed-price 464 400 414 190 1,468 Transaction or volume-based 53 307 100 30 490 Total $ 1,436 $ 1,165 $ 914 $ 595 $ 4,110 Three Months Ended Financial Services Healthcare Products and Resources Communications, Media and Technology Total (in millions) Revenues Geography: North America $ 1,044 $ 1,023 $ 572 $ 336 $ 2,975 United Kingdom 116 23 87 84 310 Rest of Europe 162 61 109 42 374 Europe - Total 278 84 196 126 684 Rest of World 139 14 53 47 253 Total $ 1,461 $ 1,121 $ 821 $ 509 $ 3,912 Service line: Consulting and technology services $ 871 $ 638 $ 481 $ 278 $ 2,268 Outsourcing services 590 483 340 231 1,644 Total $ 1,461 $ 1,121 $ 821 $ 509 $ 3,912 Type of contract: Time and materials $ 935 $ 448 $ 369 $ 306 $ 2,058 Fixed-price 471 511 361 179 1,522 Transaction or volume-based 55 162 91 24 332 Total $ 1,461 $ 1,121 $ 821 $ 509 $ 3,912 Costs to Fulfill The following table presents information related to the capitalized costs to fulfill, such as set-up or transition activities, for the three months ended March 31, 2019 . Costs to fulfill 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 statement of operations. Costs to obtain contracts were immaterial for the periods disclosed. Costs to Fulfill (in millions) Balance - December 31, 2018 $ 400 Amortization expense (20 ) Costs capitalized 43 Balance - March 31, 2019 $ 423 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: Contract Assets (in millions) Balance - December 31, 2018 $ 305 Revenues recognized during the period but not billed 238 Amounts reclassified to accounts receivable (208 ) Balance - March 31, 2019 $ 335 Our contract liabilities, or deferred revenue, consist of advance payments and billings in excess of revenues recognized. We classify deferred revenue as current or noncurrent based on the timing of when we expect to recognize the revenues. The table below shows significant movements in the deferred revenue balances (current and noncurrent) for the period disclosed: Deferred Revenue (in millions) Balance - December 31, 2018 $ 348 Amounts billed but not recognized as revenues 205 Revenues recognized related to the opening balance of deferred revenue (149 ) Balance - March 31, 2019 $ 404 Revenues recognized during the three months ended March 31, 2019 for performance obligations satisfied or partially satisfied in previous periods were immaterial. Remaining Performance Obligations As of March 31, 2019 , the aggregate amount of transaction price allocated to remaining performance obligations, was $1,990 million of which approximately 70% 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 the New Revenue Standard, (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.

Business Combinations

Business Combinations	3 Months Ended
	Mar. 31, 2019
Business Combinations [Abstract]
Business Combinations	During the three months ended March 31, 2019 , we completed two business combinations for total consideration of approximately $244 million , inclusive of contingent consideration. These acquisitions were Meritsoft, a financial software company based in Ireland, and Mustache, a U.S. based creative content agency specializing in creating original and branded content for digital, broadcast and social mediums. These acquisitions were not material, either individually or in the aggregate, to our operations or cash flow. Accordingly, pro forma results have not been presented. These acquisitions were included in our unaudited consolidated financial statements as of the date on which the businesses were acquired. We have allocated the purchase price related to these transactions to tangible and intangible assets and liabilities, including non-deductible goodwill, based on their estimated fair values. We will finalize the purchase price allocation as soon as practicable within the measurement period, but in no event later than one year following the date of acquisition. The allocations of preliminary purchase price to the fair value of the aggregate assets acquired and liabilities assumed were as follows: Fair Value Weighted Average Useful Life (in millions) Cash $ 14 Current assets 8 Non-deductible goodwill (1) 157 Customer relationship intangible assets 50 9.9 years Other intangible assets 30 6.9 years Current liabilities (4 ) Noncurrent liabilities (11 ) Purchase price $ 244 (1) The primary items that generated goodwill are the value of the acquired assembled workforces and synergies between the acquired companies and us, neither of which qualify as an amortizable intangible asset. There were no

Realignment Charges

Realignment Charges	3 Months Ended
	Mar. 31, 2019
Realignment Charges [Abstract]
Realignment Charges	We incur realignment charges to accelerate our shift to digital services and solutions while improving the overall efficiency of our operations. As part of this realignment, we may incur charges that include employee separation costs, lease termination costs and charges related to the development of our realignment plans. During the three months ended March 31, 2019 , we incurred $2 million in costs associated with our CEO transition and the departure of our President ("Executive Transition Costs"). The total costs related to the realignment are reported in "Selling, general and administrative expenses" in our unaudited consolidated statements of operations. The accrued realignment costs as of March 31, 2019 and December 31, 2018 were immaterial. Realignment charges were as follows: Three Months Ended 2019 2018 (in millions) Executive Transition Costs $ 2 $ — Lease termination costs — 1 Total realignment costs $ 2 $ 1

Investments

Investments	3 Months Ended
	Mar. 31, 2019
Investments [Abstract]
Investments	Our investments were as follows: March 31, 2019 December 31, 2018 (in millions) Short-term investments: Equity investment securities $ 25 $ 25 Available-for-sale investment securities 1,361 1,760 Held-to-maturity investment securities 826 1,065 Time deposits (1) 506 500 Total short-term investments $ 2,718 $ 3,350 Long-term investments: Equity and cost method investments $ 73 $ 74 Held-to-maturity investment securities 6 6 Total long-term investments $ 79 $ 80 (1) Includes $427 million and $423 million in restricted time deposits as of March 31, 2019 and December 31, 2018 , respectively. See Note 9 . Equity Investment Securities Our equity investment securities consist of a U.S. dollar denominated investment in a fixed income mutual fund. For the three months ended March 31, 2019 and 2018 , realized and unrealized gains and losses were immaterial. The value of the fixed income mutual fund is based on the net asset value ("NAV") of the fund, with appropriate consideration of the liquidity and any restrictions on disposition of our investment in the fund. Available-for-Sale Investment Securities Our available-for-sale investment securities consist of U.S. dollar denominated investments primarily in U.S. Treasury notes, U.S. government agency debt securities, municipal debt securities, non-U.S. government debt securities, U.S. and international corporate bonds, certificates of deposit, commercial paper, debt securities issued by supranational institutions, and asset-backed securities, including securities backed by auto loans, credit card receivables, and other receivables. Our investment guidelines are to purchase securities which are investment grade at the time of acquisition. We monitor the credit ratings of the securities in our portfolio on an ongoing basis. The amortized cost, gross unrealized gains and losses and fair value of available-for-sale investment securities at March 31, 2019 were as follows: Amortized Cost Unrealized Gains Unrealized Losses Fair (in millions) U.S. Treasury and agency debt securities $ 576 $ 1 $ (4 ) $ 573 Corporate and other debt securities 371 1 (1 ) 371 Certificates of deposit and commercial paper 19 — — 19 Asset-backed securities 341 1 (1 ) 341 Municipal debt securities 57 — — 57 Total available-for-sale investment securities $ 1,364 $ 3 $ (6 ) $ 1,361 The amortized cost, gross unrealized gains and losses and fair value of available-for-sale investment securities at December 31, 2018 were as follows: Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in millions) U.S. Treasury and agency debt securities $ 630 $ 1 $ (6 ) $ 625 Corporate and other debt securities 420 — (4 ) 416 Certificates of deposit and commercial paper 296 — — 296 Asset-backed securities 336 — (2 ) 334 Municipal debt securities 90 — (1 ) 89 Total available-for-sale investment securities $ 1,772 $ 1 $ (13 ) $ 1,760 The fair value and related unrealized losses of available-for-sale investment securities in a continuous unrealized loss position for less than 12 months and for 12 months or longer were as follows as of March 31, 2019 : Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in millions) U.S. Treasury and agency debt securities $ 13 $ — $ 412 $ (4 ) 425 (4 ) Corporate and other debt securities 15 — 233 (1 ) 248 (1 ) Certificates of deposit and commercial paper 8 — — — 8 — Asset-backed securities 33 — 157 (1 ) 190 (1 ) Municipal debt securities 1 — 32 — 33 — Total $ 70 $ — $ 834 $ (6 ) $ 904 $ (6 ) The fair value and related unrealized losses of available-for-sale investment securities in a continuous unrealized loss position for less than 12 months and for 12 months or longer were as follows as of December 31, 2018 : Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in millions) U.S. Treasury and agency debt securities $ 84 $ — $ 446 $ (6 ) $ 530 $ (6 ) Corporate and other debt securities 108 (1 ) 254 (3 ) 362 (4 ) Certificates of deposit and commercial paper 295 — — — 295 — Asset-backed securities 93 — 179 (2 ) 272 (2 ) Municipal debt securities 17 — 64 (1 ) 81 (1 ) Total $ 597 $ (1 ) $ 943 $ (12 ) $ 1,540 $ (13 ) The unrealized losses for the above securities as of March 31, 2019 and December 31, 2018 were primarily attributable to changes in interest rates. At each reporting date, we perform an evaluation of impaired available-for-sale securities to determine if the unrealized losses are other-than-temporary. We do not consider any of the investments to be other-than-temporarily impaired as of March 31, 2019 . The gross unrealized gains and losses in the above tables were recorded, net of tax, in "Accumulated other comprehensive income (loss)" in our unaudited consolidated statements of financial position. The contractual maturities of our fixed income available-for-sale investment securities as of March 31, 2019 are set forth in the following table: Amortized Cost Fair Value (in millions) Due within one year $ 299 $ 297 Due after one year up to two years 485 482 Due after two years up to three years 179 180 Due after three years 60 61 Asset-backed securities 341 341 Total available-for-sale investment securities $ 1,364 $ 1,361 Asset-backed securities were excluded from the maturity categories because the actual maturities may differ from the contractual maturities since the underlying receivables may be prepaid without penalties. Further, actual maturities of debt securities may differ from those presented above since certain obligations provide the issuer the right to call or prepay the obligation prior to scheduled maturity without penalty. Proceeds from sales of available-for-sale investment securities and the gross gains and losses that have been included in earnings as a result of those sales were as follows: Three Months Ended 2019 2018 (in millions) Proceeds from sales of available-for-sale investment securities $ 314 $ 125 Gross gains $ 1 $ — Gross losses (1 ) (1 ) Net realized (losses) on sales of available-for-sale investment securities $ — $ (1 ) Held-to-Maturity Investment Securities Our held-to-maturity investment securities consist of Indian rupee denominated investments primarily in commercial paper, international corporate bonds and government debt securities. Our investment guidelines are to purchase securities that are investment grade at the time of acquisition. We monitor the credit ratings of the securities in our portfolio on an ongoing basis. The amortized cost, gross unrealized gains and losses and fair value of held-to-maturity investment securities at March 31, 2019 were as follows: Amortized Unrealized Unrealized Fair (in millions) Short-term investments: Corporate and other debt securities $ 417 $ 1 $ — $ 418 Commercial paper 409 1 — 410 Total short-term held-to-maturity investments 826 2 — 828 Long-term investments: Corporate and other debt securities 6 — — 6 Total held-to-maturity investment securities $ 832 $ 2 $ — $ 834 The amortized cost, gross unrealized gains and losses and fair value of held-to-maturity investment securities at December 31, 2018 were as follows: Amortized Unrealized Unrealized Fair (in millions) Short-term investments: Corporate and other debt securities $ 546 $ — $ — $ 546 Commercial paper 519 — (1 ) 518 Total short-term held-to-maturity investments 1,065 — (1 ) 1,064 Long-term investments: Corporate and other debt securities 6 — — 6 Total held-to-maturity investment securities $ 1,071 $ — $ (1 ) $ 1,070 The fair value and related unrealized losses of held-to-maturity investment securities in a continuous unrealized loss position for less than 12 months and for 12 months or longer were as follows as of March 31, 2019 : Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in millions) Corporate and other debt securities $ 29 $ — $ 6 $ — $ 35 $ — Commercial paper 92 — — — 92 — Total $ 121 $ — $ 6 $ — $ 127 $ — The fair value and related unrealized losses of held-to-maturity investment securities in a continuous unrealized loss position for less than 12 months and for 12 months or longer were as follows as of December 31, 2018 : Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in millions) Corporate and other debt securities $ 263 $ — $ 57 $ — $ 320 $ — Commercial paper 268 (1 ) — — 268 (1 ) Total $ 531 $ (1 ) $ 57 $ — $ 588 $ (1 ) At each reporting date, the Company performs an evaluation of held-to-maturity securities to determine if the unrealized losses are other-than-temporary. We do not consider any of the investments to be other-than-temporarily impaired as of March 31, 2019 . The contractual maturities of our fixed income held-to-maturity investment securities as of March 31, 2019 are set forth in the following table: Amortized Cost Fair Value (in millions) Due within one year $ 826 $ 828 Due after one year up to two years 6 6 Total held-to-maturity investment securities $ 832 $ 834 During the three months ended March 31, 2019 and the year ended December 31, 2018

Leases

Leases	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Leases	Adoption of the New Lease Standard On January 1, 2019, we adopted the New Lease Standard using the Effective Date Method applied to all lease contracts existing as of January 1, 2019. Under the Effective Date Method, results for reporting periods beginning on or after January 1, 2019 are presented under the New Lease Standard. We elected the package of practical expedients that permits us to not reassess prior conclusions related to contracts containing leases, lease classification and initial direct costs. Prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting policies. The impact of adoption primarily relates to the recognition of ROU operating lease assets and operating lease liabilities on our unaudited consolidated statement of financial position for all operating leases with a term greater than twelve months . The accounting for our finance leases remained substantially unchanged. The following table provides the impact of adoption of the New Lease Standard on our unaudited consolidated statement of financial position as of January 1, 2019: Location on Statement of Financial Position January 1, 2019 (in millions) Property and equipment, net (1) $ (81 ) Operating lease assets, net (1) (2) (3) 839 Total Assets $ 758 Operating lease liabilities (2) (3) $ 191 Operating lease liabilities, noncurrent (2) (3) 670 Accrued expenses and other liabilities (3) (10 ) Other noncurrent liabilities (3) (95 ) Total Liabilities $ 756 Retained earnings (4) $ 2 (1) Reflects the reclassification of leasehold land and a built-to-suit lease asset from "Property and equipment, net" to "Operating lease assets, net". (2) Represents the recognition of operating lease assets and liabilities (current and noncurrent), as defined by the New Lease Standard, including the liability for a built-to-suit lease that was previously accounted for as a capital lease under the former lease guidance. (3) Represents the reclassification of deferred rent from "Accrued expenses and other liabilities" and "Other noncurrent liabilities" to "Operating lease assets, net" and the reclassification of built-to-suit lease liabilities from "Accrued expenses and other liabilities" and "Other noncurrent liabilities" to "Operating lease liabilities" and "Operating lease liabilities, noncurrent". (4) Represents the net impact of the derecognition of a built-to-suit lease under the former lease guidance and the re-establishment of that lease as an operating lease under the New Lease Standard. The adoption of the New Lease Standard did not materially impact our unaudited consolidated statement of operations or our unaudited statement of cash flows. Leases Our lease asset classes primarily consist of operating leases for office space, data centers and equipment. At inception of a contract, we determine whether a contract contains a lease, and if a lease is identified, whether it is an operating or finance lease. In determining whether a contract contains a lease we consider whether (1) we have the right to obtain substantially all of the economic benefits from the use of the asset throughout the term of the contract, (2) we have the right to direct how and for what purpose the asset is used throughout the term of the contract and (3) we have the right to operate the asset throughout the term of the contract without the lessor having the right to change the terms of the contract. Some of our lease agreements contain both lease and non-lease components that we account for as a single lease component for all our lease asset classes. Our ROU lease assets represent our right to use an underlying asset for the lease term and may include any advance lease payments made and any initial direct costs, and exclude lease incentives. Our ROU lease liabilities represent our obligation to make lease payments arising from the contractual terms of the lease. ROU lease assets and lease liabilities are recognized at the commencement of the lease and are calculated using the present value of lease payments over the lease term. Typically, our lease agreements do not provide sufficient detail to arrive at an implicit interest rate. Therefore, we use our estimated country-specific incremental borrowing rate based on information available at the commencement date of the lease to calculate the present value of the lease payments. In estimating our country-specific incremental borrowing rates, we consider market rates of comparable collateralized borrowings for similar terms. Our lease terms may include the option to extend or terminate the lease before the end of the contractual lease term. Our ROU lease assets and lease liabilities include these options when it is reasonably certain that they will be exercised. The following table provides information on the components of our operating and finance leases included in our unaudited consolidated statement of financial position: Leases Location on Statement of Financial Position March 31, 2019 Assets (in millions) ROU operating lease assets Operating lease assets, net $ 809 ROU finance lease assets Property and equipment, net 21 Total $ 830 Liabilities Current Operating lease Operating lease liabilities $ 184 Finance lease Accrued expenses and other current liabilities 13 Noncurrent Operating lease Operating lease liabilities, noncurrent 651 Finance lease Other noncurrent liabilities 17 Total $ 865 Our operating lease cost was $63 million for the three months ended March 31, 2019 and included $4 million of variable lease cost. A portion of our real estate leases is subject to annual changes in the Consumer Price Index ("CPI"). The changes to the CPI are treated as variable lease payments and are recognized in the period in which the obligation for those payments was incurred. Other variable lease costs primarily relate to adjustments for common area maintenance, utilities and property tax. These variable costs are recognized in the period in which the obligation for those payments was incurred. Our short term lease rental expense was $4 million for the three months ended March 31, 2019. Lease interest expense related to our finance leases was immaterial for the three months ended March 31, 2019 . The following table provides information on the weighted average remaining lease term and weighted average discount rate for our operating leases: Operating Lease Term and Discount Rate March 31, 2019 Weighted average remaining lease term 5.8 years Weighted-average discount rate 5.8 % The following table provides supplemental cash flow information related to our operating leases: Three Months Ended (in millions) Cash paid for amounts included in the measurement of operating lease liabilities $ 53 ROU assets obtained in exchange for operating lease liabilities 16 Cash paid for amounts included in the measurement of finance lease liabilities was immaterial for the three months ended March 31, 2019. Additionally, ROU assets obtained in exchange for finance lease liabilities was immaterial for the three months ended March 31, 2019. The following table provides the schedule of maturities of our operating lease liabilities, under the New Lease Standard, as of March 31, 2019: March 31, 2019 (in millions) 2019- remainder of year $ 171 2020 209 2021 166 2022 126 2023 95 2024 62 Thereafter 154 Total lease payments 983 Interest (148 ) Total lease liabilities $ 835 The following table provides the schedule of our future minimum payments on our operating leases, as of December 31, 2018, which were accounted for in accordance with our historic accounting policies. December 31, 2018 (in millions) 2019 $ 226 2020 197 2021 157 2022 121 2023 90 Thereafter 197 Total lease payments $ 988 As of March 31, 2019, we had $29 million of additional operating leases that had yet to commence and therefore are not included in our unaudited statement of financial position. These leases are primarily related to real estate and will commence in various months in 2019 with lease terms of 1 year to 6 years

Accrued Expenses And Other Curr

Accrued Expenses And Other Current Liabilities	3 Months Ended
	Mar. 31, 2019
Payables and Accruals [Abstract]
Accrued Expenses And Other Current Liabilities	Accrued expenses and other current liabilities were as follows: March 31, 2019 December 31, 2018 (in millions) Compensation and benefits $ 931 $ 1,216 Customer volume and other incentives 329 323 Derivative financial instruments 16 25 FCPA Accrual (1) — 28 Income taxes 130 162 Professional fees 115 110 Travel and entertainment 35 34 Other 359 369 Total accrued expenses and other current liabilities $ 1,915 $ 2,267 (1) Refer to Note 13

Debt

Debt	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Debt	In 2018, we completed a debt refinancing in which we entered into a credit agreement with a commercial bank syndicate (the "Credit Agreement") providing for a $750 million unsecured term loan (the "Term Loan") and a $1,750 million unsecured revolving credit facility, which are due to mature in November 2023. We are required under the Credit Agreement to make scheduled quarterly principal payments on the Term Loan beginning in December 2019. 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 March 31, 2019 . Short-term Debt As of March 31, 2019 and December 31, 2018, we had $19 million and $9 million , respectively, of short-term debt related to current maturities for our Term Loan. As of March 31, 2019, we had no notes outstanding under the revolving credit facility. Long-term Debt The following summarizes our long-term debt balances as of: March 31, 2019 December 31, 2018 (in millions) Term loan $ 750 $ 750 Less: Current maturities (19 ) (9 ) Deferred financing costs (4 ) (5 ) Long-term debt, net of current maturities $ 727 $ 736

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	We are involved in an ongoing dispute with the Indian Income Tax Department ("ITD") in connection with which we received a notice in March 2018 asserting that the ITD is owed additional taxes on our previously disclosed 2016 India Cash Remittance, which was a transaction undertaken by our principal operating subsidiary in India ("CTS India") to repurchase shares from its shareholders, which are non-Indian Cognizant entities, valued at $2.8 billion . As a result of that transaction, undertaken pursuant to a plan approved by the Madras High Court in Chennai, India, we previously paid $135 million in Indian income taxes, which we believe are all the applicable taxes owed for this transaction under Indian law. The ITD is asserting that we owe an additional 33 billion Indian rupees ( $477 million at the March 31, 2019 exchange rate) related to the 2016 India Cash Remittance. In addition to the dispute on the 2016 India Cash Remittance, we are 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 two disputes collectively referred to as the "ITD Dispute"), for which we also believe we have paid all the applicable taxes owed. Accordingly, we have not recorded any reserves for these matters as of March 31, 2019 . The ITD Dispute is currently pending before the Madras High Court, and no final decision has been reached. In March 2018, the ITD placed an attachment on certain of our India bank accounts, relating to the 2016 India Cash Remittance. In April 2018, the Madras High Court granted our application for a stay of the actions of the ITD and lifted the ITD’s attachment of our bank accounts. As part of the interim stay order, we have deposited 5 billion Indian rupees ( $71 million at both the March 31, 2019 and December 31, 2018 exchange rates) representing 15% of the disputed tax amount related to the 2016 India Cash Remittance, with the ITD. These amounts are presented in "Other current assets" in our unaudited consolidated statements of financial position. In addition, in April 2018 the court placed a lien on certain time deposits of CTS India in the amount of 28 billion Indian rupees ( $406 million at the March 31, 2019 exchange rate and $404 million at the December 31, 2018 exchange rate), which is the remainder of the disputed tax amount related to the 2016 India Cash Remittance. The affected time deposits are considered restricted assets and we have reported them in “Short-term investments” in our unaudited consolidated statements of financial position. As of March 31, 2019 and December 31, 2018, the restricted time deposits balance was $427 million and $423 million , respectively, including accumulated interest. As of March 31, 2018, we classified $159 million

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	In the normal course of business, we use foreign exchange forward contracts to manage foreign currency exchange rate risk. The estimated fair value of the foreign exchange forward contracts considers the following items: discount rate, timing and amount of cash flow and counterparty credit risk. Derivatives may give rise to credit risks 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 entering into derivative transactions only with highly-rated financial institutions, limiting 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 forward contracts set forth in the below table are subject to master netting arrangements, such as the International Swaps and Derivatives Association ("ISDA"), 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 forward contracts 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 forward 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: March 31, 2019 December 31, 2018 Designation of Derivatives Location on Statements of Financial Position Assets Liabilities Assets Liabilities (in millions) Foreign exchange forward contracts – Designated as cash flow hedging instruments Other current assets $ 22 $ — $ 11 $ — Other noncurrent assets 30 — 15 — Accrued expenses and other current liabilities — 12 — 21 Other noncurrent liabilities — 1 — 9 Total 52 13 26 30 Foreign exchange forward contracts – Not designated as hedging instruments Other current assets 3 — 1 — Accrued expenses and other current liabilities — 4 — 4 Total 3 4 1 4 Total $ 55 $ 17 $ 27 $ 34 Cash Flow Hedges We have entered into a series of foreign exchange forward 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 exchange rates on future operating costs and are scheduled to mature each month during 2019 , 2020 and the first quarter of 2021. Under these contracts, we purchase Indian rupees and sell U.S. dollars. 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 in the same period the forecasted Indian rupee denominated payments are recorded in earnings. As of March 31, 2019 , we estimate that $9 million , net of tax, of net gains related 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 value of our outstanding contracts by year of maturity and the net unrealized gains and losses included in the caption "Accumulated other comprehensive income (loss)" in our unaudited consolidated statements of financial position, for such contracts were as follows: March 31, 2019 December 31, 2018 (in millions) 2019 $ 1,130 $ 1,388 2020 965 780 2021 140 — Total notional value of contracts outstanding $ 2,235 $ 2,168 Net unrealized gains (losses) included in accumulated other comprehensive income (loss), net of taxes $ 33 $ (3 ) Upon settlement or maturity of the cash flow hedge contracts, we record the related gains or losses, based on our designation at the commencement of the contract, with the related hedged Indian rupee denominated expense reported within the captions "Cost of revenues" and "Selling, general and administrative expenses" in our unaudited consolidated statements of operations. Hedge ineffectiveness was immaterial for all periods presented. 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 March 31 : Change in Derivative Gains/Losses Recognized in Accumulated Other Comprehensive Income (Loss) (effective portion) Location of Net Derivative Gains and (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion) Net Gains and (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion) 2019 2018 2019 2018 (in millions) Foreign exchange forward contracts – Designated as cash flow hedging instruments $ 39 $ (14 ) Cost of revenues $ (3 ) $ 30 Selling, general and administrative expenses (1 ) 5 Total $ (4 ) $ 35 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 presented in Note 12 . 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, primarily the Indian rupee, British pound and Euro. We entered into a series of foreign exchange forward contracts that are scheduled to mature in 2019. 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: March 31, 2019 December 31, 2018 Notional Fair Value Notional Fair Value (in millions) Contracts outstanding $ 410 $ (1 ) $ 507 $ (3 ) 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 months ended March 31 : Location of Net Gains (Losses) on Derivative Instruments Amount of Net Gains (Losses) on Derivative Instruments 2019 2018 (in millions) Foreign exchange forward contracts – Not designated as hedging instruments Foreign currency exchange gains (losses), net $ (1 ) $ 2

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	We measure our cash equivalents, investments, contingent consideration liabilities and foreign exchange forward 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 March 31, 2019 : Level 1 Level 2 Level 3 Total (in millions) Cash equivalents: Money market funds $ 353 $ — $ — $ 353 Commercial paper — 16 — 16 Total cash equivalents 353 16 — 369 Short-term investments: Time deposits (1) — 506 — 506 Available-for-sale investment securities: U.S. Treasury and agency debt securities 526 47 — 573 Corporate and other debt securities — 371 — 371 Certificates of deposit and commercial paper — 19 — 19 Asset-backed securities — 341 — 341 Municipal debt securities — 57 — 57 Total available-for-sale investment securities 526 835 — 1,361 Held-to-maturity investment securities: Corporate and other debt securities — 418 — 418 Commercial paper — 410 — 410 Total short-term held-to-maturity investment securities — 828 — 828 Total short-term investments (2) 526 2,169 — 2,695 Long-term investments: Held-to-maturity investment securities: Corporate and other debt securities — 6 — 6 Total long-term held-to-maturity investment securities — 6 — 6 Total long-term investments (3) — 6 — 6 Derivative financial instruments - foreign exchange forward contracts: Other current assets — 25 — 25 Accrued expenses and other current liabilities — (16 ) — (16 ) Other noncurrent assets — 30 — 30 Other noncurrent liabilities — (1 ) — (1 ) Total derivative financial instruments - foreign exchange forward contracts — 38 — 38 Contingent consideration liabilities — — (52 ) (52 ) Total $ 879 $ 2,229 $ (52 ) $ 3,056 (1) Includes $427 million in restricted time deposits. See Note 9 . (2) Excludes an equity security invested in a mutual fund valued at $25 million based on the NAV of the fund. (3) Excludes equity and cost method investments of $73 million at March 31, 2019. The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of December 31, 2018 : Level 1 Level 2 Level 3 Total (in millions) Cash equivalents: Money market funds $ 103 $ — $ — $ 103 Bank deposits — 32 — 32 Certificates of deposit and commercial paper — 68 — 68 Total cash equivalents 103 100 — 203 Short-term investments: Time deposits (1) — 500 — 500 Available-for-sale investment securities: U.S. Treasury and agency debt securities 570 55 — 625 Corporate and other debt securities — 416 — 416 Certificates of deposit and commercial paper — 296 — 296 Asset-backed securities — 334 — 334 Municipal debt securities — 89 — 89 Total available-for-sale investment securities 570 1,190 — 1,760 Held-to-maturity investment securities: Corporate and other debt securities — 546 — 546 Commercial paper — 518 — 518 Total short-term held-to-maturity investment securities — 1,064 — 1,064 Total short-term investments (2) 570 2,754 — 3,324 Long-term investments: Held-to-maturity investment securities: Corporate and other debt securities — 6 — 6 Total long-term held-to-maturity investment securities — 6 — 6 Total long-term investments (3) — 6 — 6 Derivative financial instruments - foreign exchange forward contracts: Other current assets — 12 — 12 Accrued expenses and other current liabilities — (25 ) — (25 ) Other noncurrent assets — 15 — 15 Other noncurrent liabilities — (9 ) — (9 ) Total $ 673 $ 2,853 $ — $ 3,526 (1) Includes $423 million in restricted time deposits. See Note 9 . (2) Excludes an equity security invested in a mutual fund valued at $25 million based on the NAV of the fund. (3) Excludes equity and cost method investments of $74 million at December 31, 2018. We measure the fair value of money market funds and U.S. Treasury securities based on quoted prices in active markets for identical assets and therefore classify these assets as Level 1. The fair value of commercial paper, certificates of deposit, U.S. government agency securities, municipal debt securities, debt securities issued by supranational institutions, U.S. and international corporate bonds and foreign government debt securities 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. We measure the fair value of our asset-backed securities using model-driven valuations based on significant inputs derived from or corroborated by observable market data such as dealer quotes, available trade information, spread data, current market assumptions on prepayment speeds and defaults and historical data on deal collateral performance. The carrying value of the time deposits approximated fair value as of March 31, 2019 and December 31, 2018 . 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 contract and applies the difference in the rates to each outstanding contract. The market forward rates include a discount and credit risk factor. The amounts are aggregated by type of contract and maturity. We estimate the fair value of our contingent consideration liabilities associated with our acquisitions utilizing one or more significant inputs that are unobservable. We calculate the fair value of the contingent consideration liabilities based on the probability-weighted expected performance of the acquired entity against the target performance metric, discounted to present value when appropriate. Contingent consideration liabilities were immaterial as of December 31, 2018. During the three months ended March 31, 2019 and the year ended December 31, 2018

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive income (loss) by component were as follows for the three months ended March 31, 2019 : Before Tax Amount Tax Effect Net of Tax Amount (in millions) Foreign currency translation adjustments: Beginning balance $ (108 ) $ 5 $ (103 ) Change in foreign currency translation adjustments (3 ) 1 (2 ) Ending balance $ (111 ) $ 6 $ (105 ) Unrealized (losses) on available-for-sale investment securities: Beginning balance $ (12 ) $ 4 $ (8 ) Net unrealized gains arising during the period 9 (3 ) 6 Reclassification of net losses to Other, net — — — Net change 9 (3 ) 6 Ending balance $ (3 ) $ 1 $ (2 ) Unrealized (losses) gains on cash flow hedges: Beginning balance $ (4 ) $ 1 $ (3 ) Unrealized gains arising during the period 39 (7 ) 32 Reclassifications of net losses to: Cost of revenues 3 — 3 Selling, general and administrative expenses 1 — 1 Net change 43 (7 ) 36 Ending balance $ 39 $ (6 ) $ 33 Accumulated other comprehensive income (loss): Beginning balance $ (124 ) $ 10 $ (114 ) Other comprehensive income (loss) 49 (9 ) 40 Ending balance $ (75 ) $ 1 $ (74 ) Changes in accumulated other comprehensive income (loss) by component were as follows for the three months ended March 31, 2018 : Before Tax Amount Tax Effect Net of Tax Amount (in millions) Foreign currency translation adjustments: Beginning balance $ (38 ) $ — $ (38 ) Change in foreign currency translation adjustments 41 (4 ) 37 Ending balance $ 3 $ (4 ) $ (1 ) Unrealized (losses) on available-for-sale investment securities: Beginning balance $ (11 ) $ 4 $ (7 ) Cumulative effect of change in accounting principle (1) — (1 ) (1 ) Net unrealized (losses) arising during the period (9 ) 1 (8 ) Reclassification of net losses to Other, net 1 — 1 Net change (8 ) — (8 ) Ending balance $ (19 ) $ 4 $ (15 ) Unrealized gains on cash flow hedges: Beginning balance $ 154 $ (39 ) $ 115 Unrealized (losses) arising during the period (14 ) 5 (9 ) Reclassifications of net (gains) to: Cost of revenues (30 ) 7 (23 ) Selling, general and administrative expenses (5 ) 1 (4 ) Net change (49 ) 13 (36 ) Ending balance $ 105 $ (26 ) $ 79 Accumulated other comprehensive income (loss): Beginning balance $ 105 $ (35 ) $ 70 Other comprehensive income (loss) (16 ) 9 (7 ) Ending balance $ 89 $ (26 ) $ 63 (1)

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2019
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 February 28, 2019, a ruling of the Supreme Court of India interpreting certain statutory defined contribution obligations of employees and employers (the “India Defined Contribution Obligation”) altered historical understandings of such obligations, extending them to cover additional portions of the employee’s income. As a result, the contributions of our employees and the Company in future periods are required to be increased. We have accrued $117 million with respect to prior periods, assuming retroactive application of the Supreme Court’s ruling. 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. We anticipate the Indian government will review the matter and believe there is a substantial question as to whether the Indian government will apply the Supreme Court’s ruling on a retroactive basis. As such, the ultimate amount of our obligation may be materially different from the amount accrued. In February 2019, we completed our previously disclosed internal investigation focused on whether certain payments relating to Company-owned facilities in India were made improperly and in violation of the U.S. Foreign Corrupt Practices Act ("FCPA") and other applicable laws. We also announced a resolution of the previously disclosed investigations by the United States Department of Justice ("DOJ") and United States Securities and Exchange Commission ("SEC") into the matters that were the subject of our internal investigation. In connection with this resolution, in February 2019 we paid approximately $28 million to the DOJ and SEC, an amount consistent with our December 31, 2018 accrual for this matter. The DOJ also issued a declination letter, declining to take any additional action against the Company. In 2016, three putative securities class action complaints were filed in the United States District Court for the District of New Jersey, naming us and certain of our current and former officers 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 as defendants and alleging violations of the Exchange Act, based on allegedly false or misleading statements related to potential violations of the FCPA, 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 a motion to dismiss the consolidated amended complaint on June 6, 2017. On August 8, 2018, the Court issued an order which granted the motion to dismiss in part, including dismissal of all claims against current officers of the Company, and denied them in part. On September 7, 2018, we filed a motion in the United States District Court for the District of New Jersey 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 District Court 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 United States Court of Appeals for the Third Circuit. On March 6, 2019, the Third Circuit denied our petition without prejudice. In an order dated March 19, 2019, the District Court directed the lead plaintiffs to provide the defendants with a proposed amended complaint. On April 26, 2019, lead plaintiffs filed their second amended complaint and the defendants must file a motion to dismiss the complaint on or before June 10, 2019. In 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 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. In 2017, three additional putative shareholder derivative complaints alleging similar claims were filed in the United States District Court for the District of New Jersey, naming us and certain of our current and former directors and officers 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 United States District Court for the District of New Jersey 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 United States District Court for the District of New Jersey, naming us, certain of our current and former directors, and certain of our current and former officers as defendants. The complaint in that action asserts claims similar to those in the previously-filed putative shareholder derivative actions. We are presently unable to predict the duration, scope or result of the consolidated putative securities class action, the putative shareholder derivative actions or any other lawsuits. As such, we are presently unable to develop a reasonable estimate of a possible loss or range of losses, if any, and thus have not recorded any accruals related to these matters. While the Company intends to defend the lawsuits vigorously, these lawsuits and any other related 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 the Company’s 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. We have expensed such costs incurred through March 31, 2019. We have maintained directors and officers insurance, from which a portion of the indemnification expenses and costs related to the putative securities class action complaints may be recoverable, and have recorded an insurance receivable of $6 million as of March 31, 2019. We are unable to make a reliable estimate of the eventual cash flows by period related to the indemnification and expense advancement obligations described here. See Note 9 for information relating to the ITD Dispute. Many of our engagements involve projects that are critical to the operations of our customers’ business and provide benefits that are difficult to quantify. Any failure in a customer’s systems or our failure to meet our contractual obligations to our customers, including any breach involving a customer’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 omissions, there 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	3 Months Ended
	Mar. 31, 2019
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; • Communications, Media and Technology, which includes our communications and media operating segment and our technology operating segment. Our sales managers, account executives, account managers and project teams 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. In 2019, we made changes to the internal measurement of segment operating profits for the purpose of evaluating segment performance and resource allocation. The primary reason for the change was to charge to our business segments costs that are directly managed and controlled by them. Specifically, segment operating profit now includes certain benefit, immigration, recruitment and sales and field marketing costs, which were previously included in "unallocated costs." We have reported our 2019 segment operating profits using the new allocation methodology and have restated the 2018 results to conform to the new methodology. Additionally, we combined our energy and utilities operating segment with our manufacturing and logistics operating segment for our internal reporting. Our products and resources segment, which was previously comprised of four operating segments (retail and consumer goods; manufacturing and logistics; travel and hospitality; and energy and utilities) is now comprised of three operating segments (retail and consumer goods; manufacturing, logistics, energy and utilities; and travel and hospitality). This change reflects how this operating segment is currently managed and reported to chief operating decision makers but will not affect our reportable segment financial results. 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 selling, general and administrative expenses, excess or shortfall of incentive compensation for delivery personnel as compared to target, costs related to our realignment program, 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 separately disclosed as “unallocated costs” and adjusted against our total income from operations. The incremental accrual related to the India Defined Contribution Obligation recorded in the first quarter of 2019 has also been excluded from segment operating profits and is included in "unallocated costs" in the table below. 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, please see Note 2 . Segment operating profits, before unallocated expenses, by reportable segment were as follows: Three Months Ended 2019 2018 (in millions) Financial Services $ 400 $ 440 Healthcare 337 337 Products and Resources 234 253 Communications, Media and Technology 174 158 Total segment operating profit 1,145 1,188 Less: unallocated costs 606 495 Income from operations $ 539 $ 693 Geographic Area Information Long-lived assets by geographic area are as follows: As of March 31, 2019 December 31, 2018 (in millions) Long-lived Assets: (1) North America (2) $ 420 $ 436 Europe 110 105 Rest of World (3) 784 853 Total $ 1,314 $ 1,394 ________________ (1) Long-lived assets include property and equipment, net of accumulated depreciation and amortization. (2) Substantially all relates to operations in the United States. (3)

Subsequent Events (Notes)

Subsequent Events (Notes)	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Dividend On May 1, 2019, our Board of Directors approved the Company's declaration of a $0.20

Interim Consolidated Financia_2

Interim Consolidated Financial Statements (Policies)	3 Months Ended
	Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recently Adopted/New Accounting Pronouncements	Recently Adopted Accounting Pronouncements Date Issued and Topic Date Adopted and Method Description Impact February 2016 January 1, 2019 Effective Date Method The new standard replaces the existing guidance on leases and requires the lessee to recognize a right-of-use ("ROU") asset and a lease liability for all leases with lease terms equal to or greater than twelve months. For finance leases, the lessee recognizes interest expense and amortization of the ROU asset, and for operating leases, the lessee recognizes total lease expense on a straight-line basis. The standard offers several practical expedients for transition and certain expedients specific to lessees or lessors. The standard allows for two methods of adoption: retrospective to each prior reporting period presented with the cumulative effect of adoption recognized at the beginning of the earliest period presented or retrospective to the beginning of the period of adoption through a cumulative-effect adjustment (the "Effective Date Method"). See Note 6 for the impact of adoption of this standard. March 2017 January 1, 2019 Modified Retrospective This update shortens the amortization period for certain callable debt securities held at a premium to the earliest call date. The amendments do not require an accounting change for securities held at a discount. Upon adoption, entities are required to use a modified retrospective transition with the cumulative effect adjustment recognized to retained earnings as of the beginning of the period of adoption. The adoption of this update did not have an impact on our financial statements. August 2018 Early adoption on January 1, 2019 Prospective This update aligns the accounting for costs incurred to implement a CCA that is a service arrangement with the guidance on capitalizing costs associated with developing or obtaining internal-use software. In addition, this update clarifies the financial statement presentation requirement for capitalized implementation costs and related amortization of such costs. The adoption of this update did not have an impact on our financial statements.

Revenues (Tables)

Revenues (Tables)	3 Months Ended
	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Capitalized Costs to Fulfill Contract with Customer	The following table presents information related to the capitalized costs to fulfill, such as set-up or transition activities, for the three months ended March 31, 2019 . Costs to fulfill 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 statement of operations. Costs to obtain contracts were immaterial for the periods disclosed. Costs to Fulfill (in millions) Balance - December 31, 2018 $ 400 Amortization expense (20 ) Costs capitalized 43 Balance - March 31, 2019 $ 423
Contract with Customer, Asset and Liability	The table below shows significant movements in the deferred revenue balances (current and noncurrent) for the period disclosed: Deferred Revenue (in millions) Balance - December 31, 2018 $ 348 Amounts billed but not recognized as revenues 205 Revenues recognized related to the opening balance of deferred revenue (149 ) Balance - March 31, 2019 $ 404 Contract Assets (in millions) Balance - December 31, 2018 $ 305 Revenues recognized during the period but not billed 238 Amounts reclassified to accounts receivable (208 ) Balance - March 31, 2019 $ 335
Disaggregation of Revenue	The table below presents disaggregated revenues from contracts with customers by customer 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 regions based upon customer location. Substantially all of the revenue in our North America region relates to operations in the United States. Three Months Ended Financial Services Healthcare Products and Resources Communications, Media and Technology Total (in millions) Revenues Geography: North America $ 1,018 $ 1,042 $ 641 $ 422 $ 3,123 United Kingdom 129 25 94 81 329 Rest of Europe 162 82 115 46 405 Europe - Total 291 107 209 127 734 Rest of World 127 16 64 46 253 Total $ 1,436 $ 1,165 $ 914 $ 595 $ 4,110 Service line: Consulting and technology services $ 913 $ 638 $ 552 $ 306 $ 2,409 Outsourcing services 523 527 362 289 1,701 Total $ 1,436 $ 1,165 $ 914 $ 595 $ 4,110 Type of contract: Time and materials $ 919 $ 458 $ 400 $ 375 $ 2,152 Fixed-price 464 400 414 190 1,468 Transaction or volume-based 53 307 100 30 490 Total $ 1,436 $ 1,165 $ 914 $ 595 $ 4,110 Three Months Ended Financial Services Healthcare Products and Resources Communications, Media and Technology Total (in millions) Revenues Geography: North America $ 1,044 $ 1,023 $ 572 $ 336 $ 2,975 United Kingdom 116 23 87 84 310 Rest of Europe 162 61 109 42 374 Europe - Total 278 84 196 126 684 Rest of World 139 14 53 47 253 Total $ 1,461 $ 1,121 $ 821 $ 509 $ 3,912 Service line: Consulting and technology services $ 871 $ 638 $ 481 $ 278 $ 2,268 Outsourcing services 590 483 340 231 1,644 Total $ 1,461 $ 1,121 $ 821 $ 509 $ 3,912 Type of contract: Time and materials $ 935 $ 448 $ 369 $ 306 $ 2,058 Fixed-price 471 511 361 179 1,522 Transaction or volume-based 55 162 91 24 332 Total $ 1,461 $ 1,121 $ 821 $ 509 $ 3,912

Business Combinations (Tables)

Business Combinations (Tables)	3 Months Ended
	Mar. 31, 2019
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 liabilities assumed were as follows: Fair Value Weighted Average Useful Life (in millions) Cash $ 14 Current assets 8 Non-deductible goodwill (1) 157 Customer relationship intangible assets 50 9.9 years Other intangible assets 30 6.9 years Current liabilities (4 ) Noncurrent liabilities (11 ) Purchase price $ 244

Realignment Charges (Tables)

Realignment Charges (Tables)	3 Months Ended
	Mar. 31, 2019
Realignment Charges [Abstract]
Realignment Charges	Realignment charges were as follows: Three Months Ended 2019 2018 (in millions) Executive Transition Costs $ 2 $ — Lease termination costs — 1 Total realignment costs $ 2 $ 1

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2019
Schedule of Investments [Line Items]
Investments	Our investments were as follows: March 31, 2019 December 31, 2018 (in millions) Short-term investments: Equity investment securities $ 25 $ 25 Available-for-sale investment securities 1,361 1,760 Held-to-maturity investment securities 826 1,065 Time deposits (1) 506 500 Total short-term investments $ 2,718 $ 3,350 Long-term investments: Equity and cost method investments $ 73 $ 74 Held-to-maturity investment securities 6 6 Total long-term investments $ 79 $ 80 (1) Includes $427 million and $423 million in restricted time deposits as of March 31, 2019 and December 31, 2018 , respectively. See Note 9
Available-for-sale Securities [Member]
Schedule of Investments [Line Items]
Unrealized Gain (Loss) on Investments	The amortized cost, gross unrealized gains and losses and fair value of available-for-sale investment securities at March 31, 2019 were as follows: Amortized Cost Unrealized Gains Unrealized Losses Fair (in millions) U.S. Treasury and agency debt securities $ 576 $ 1 $ (4 ) $ 573 Corporate and other debt securities 371 1 (1 ) 371 Certificates of deposit and commercial paper 19 — — 19 Asset-backed securities 341 1 (1 ) 341 Municipal debt securities 57 — — 57 Total available-for-sale investment securities $ 1,364 $ 3 $ (6 ) $ 1,361 The amortized cost, gross unrealized gains and losses and fair value of available-for-sale investment securities at December 31, 2018 were as follows: Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in millions) U.S. Treasury and agency debt securities $ 630 $ 1 $ (6 ) $ 625 Corporate and other debt securities 420 — (4 ) 416 Certificates of deposit and commercial paper 296 — — 296 Asset-backed securities 336 — (2 ) 334 Municipal debt securities 90 — (1 ) 89 Total available-for-sale investment securities $ 1,772 $ 1 $ (13 ) $ 1,760
Securities in Continuous Unrealized Loss Positions	The fair value and related unrealized losses of available-for-sale investment securities in a continuous unrealized loss position for less than 12 months and for 12 months or longer were as follows as of March 31, 2019 : Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in millions) U.S. Treasury and agency debt securities $ 13 $ — $ 412 $ (4 ) 425 (4 ) Corporate and other debt securities 15 — 233 (1 ) 248 (1 ) Certificates of deposit and commercial paper 8 — — — 8 — Asset-backed securities 33 — 157 (1 ) 190 (1 ) Municipal debt securities 1 — 32 — 33 — Total $ 70 $ — $ 834 $ (6 ) $ 904 $ (6 ) The fair value and related unrealized losses of available-for-sale investment securities in a continuous unrealized loss position for less than 12 months and for 12 months or longer were as follows as of December 31, 2018 : Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in millions) U.S. Treasury and agency debt securities $ 84 $ — $ 446 $ (6 ) $ 530 $ (6 ) Corporate and other debt securities 108 (1 ) 254 (3 ) 362 (4 ) Certificates of deposit and commercial paper 295 — — — 295 — Asset-backed securities 93 — 179 (2 ) 272 (2 ) Municipal debt securities 17 — 64 (1 ) 81 (1 ) Total $ 597 $ (1 ) $ 943 $ (12 ) $ 1,540 $ (13 )
Contractual Maturities	The contractual maturities of our fixed income available-for-sale investment securities as of March 31, 2019 are set forth in the following table: Amortized Cost Fair Value (in millions) Due within one year $ 299 $ 297 Due after one year up to two years 485 482 Due after two years up to three years 179 180 Due after three years 60 61 Asset-backed securities 341 341 Total available-for-sale investment securities $ 1,364 $ 1,361
Schedule of Realized Gain (Loss)	Proceeds from sales of available-for-sale investment securities and the gross gains and losses that have been included in earnings as a result of those sales were as follows: Three Months Ended 2019 2018 (in millions) Proceeds from sales of available-for-sale investment securities $ 314 $ 125 Gross gains $ 1 $ — Gross losses (1 ) (1 ) Net realized (losses) on sales of available-for-sale investment securities $ — $ (1 )
Held-to-maturity Securities [Member]
Schedule of Investments [Line Items]
Unrealized Gain (Loss) on Investments	The amortized cost, gross unrealized gains and losses and fair value of held-to-maturity investment securities at March 31, 2019 were as follows: Amortized Unrealized Unrealized Fair (in millions) Short-term investments: Corporate and other debt securities $ 417 $ 1 $ — $ 418 Commercial paper 409 1 — 410 Total short-term held-to-maturity investments 826 2 — 828 Long-term investments: Corporate and other debt securities 6 — — 6 Total held-to-maturity investment securities $ 832 $ 2 $ — $ 834 The amortized cost, gross unrealized gains and losses and fair value of held-to-maturity investment securities at December 31, 2018 were as follows: Amortized Unrealized Unrealized Fair (in millions) Short-term investments: Corporate and other debt securities $ 546 $ — $ — $ 546 Commercial paper 519 — (1 ) 518 Total short-term held-to-maturity investments 1,065 — (1 ) 1,064 Long-term investments: Corporate and other debt securities 6 — — 6 Total held-to-maturity investment securities $ 1,071 $ — $ (1 ) $ 1,070
Securities in Continuous Unrealized Loss Positions	The fair value and related unrealized losses of held-to-maturity investment securities in a continuous unrealized loss position for less than 12 months and for 12 months or longer were as follows as of March 31, 2019 : Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in millions) Corporate and other debt securities $ 29 $ — $ 6 $ — $ 35 $ — Commercial paper 92 — — — 92 — Total $ 121 $ — $ 6 $ — $ 127 $ — The fair value and related unrealized losses of held-to-maturity investment securities in a continuous unrealized loss position for less than 12 months and for 12 months or longer were as follows as of December 31, 2018 : Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in millions) Corporate and other debt securities $ 263 $ — $ 57 $ — $ 320 $ — Commercial paper 268 (1 ) — — 268 (1 ) Total $ 531 $ (1 ) $ 57 $ — $ 588 $ (1 )
Contractual Maturities	The contractual maturities of our fixed income held-to-maturity investment securities as of March 31, 2019 are set forth in the following table: Amortized Cost Fair Value (in millions) Due within one year $ 826 $ 828 Due after one year up to two years 6 6 Total held-to-maturity investment securities $ 832 $ 834

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Impact of Adoption of Lease Standard [Table Text Block]	The following table provides the impact of adoption of the New Lease Standard on our unaudited consolidated statement of financial position as of January 1, 2019: Location on Statement of Financial Position January 1, 2019 (in millions) Property and equipment, net (1) $ (81 ) Operating lease assets, net (1) (2) (3) 839 Total Assets $ 758 Operating lease liabilities (2) (3) $ 191 Operating lease liabilities, noncurrent (2) (3) 670 Accrued expenses and other liabilities (3) (10 ) Other noncurrent liabilities (3) (95 ) Total Liabilities $ 756 Retained earnings (4) $ 2 (1) Reflects the reclassification of leasehold land and a built-to-suit lease asset from "Property and equipment, net" to "Operating lease assets, net". (2) Represents the recognition of operating lease assets and liabilities (current and noncurrent), as defined by the New Lease Standard, including the liability for a built-to-suit lease that was previously accounted for as a capital lease under the former lease guidance. (3) Represents the reclassification of deferred rent from "Accrued expenses and other liabilities" and "Other noncurrent liabilities" to "Operating lease assets, net" and the reclassification of built-to-suit lease liabilities from "Accrued expenses and other liabilities" and "Other noncurrent liabilities" to "Operating lease liabilities" and "Operating lease liabilities, noncurrent". (4)
Schedule of Lease's Statement of Financial Position	The following table provides information on the components of our operating and finance leases included in our unaudited consolidated statement of financial position: Leases Location on Statement of Financial Position March 31, 2019 Assets (in millions) ROU operating lease assets Operating lease assets, net $ 809 ROU finance lease assets Property and equipment, net 21 Total $ 830 Liabilities Current Operating lease Operating lease liabilities $ 184 Finance lease Accrued expenses and other current liabilities 13 Noncurrent Operating lease Operating lease liabilities, noncurrent 651 Finance lease Other noncurrent liabilities 17 Total $ 865
Schedule of Cash Flow and Other Information	The following table provides information on the weighted average remaining lease term and weighted average discount rate for our operating leases: Operating Lease Term and Discount Rate March 31, 2019 Weighted average remaining lease term 5.8 years Weighted-average discount rate 5.8 % The following table provides supplemental cash flow information related to our operating leases: Three Months Ended (in millions) Cash paid for amounts included in the measurement of operating lease liabilities $ 53 ROU assets obtained in exchange for operating lease liabilities 16
Schedule of Future Minimum Payments	The following table provides the schedule of maturities of our operating lease liabilities, under the New Lease Standard, as of March 31, 2019: March 31, 2019 (in millions) 2019- remainder of year $ 171 2020 209 2021 166 2022 126 2023 95 2024 62 Thereafter 154 Total lease payments 983 Interest (148 ) Total lease liabilities $ 835 The following table provides the schedule of our future minimum payments on our operating leases, as of December 31, 2018, which were accounted for in accordance with our historic accounting policies. December 31, 2018 (in millions) 2019 $ 226 2020 197 2021 157 2022 121 2023 90 Thereafter 197 Total lease payments $ 988

Accrued Expenses And Other Cu_2

Accrued Expenses And Other Current Liabilities (Tables)	3 Months Ended
	Mar. 31, 2019
Payables and Accruals [Abstract]
Accrued Expenses And Other Current Liabilities	Accrued expenses and other current liabilities were as follows: March 31, 2019 December 31, 2018 (in millions) Compensation and benefits $ 931 $ 1,216 Customer volume and other incentives 329 323 Derivative financial instruments 16 25 FCPA Accrual (1) — 28 Income taxes 130 162 Professional fees 115 110 Travel and entertainment 35 34 Other 359 369 Total accrued expenses and other current liabilities $ 1,915 $ 2,267 (1) Refer to Note 13

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Summary of Long-term Debt	The following summarizes our long-term debt balances as of: March 31, 2019 December 31, 2018 (in millions) Term loan $ 750 $ 750 Less: Current maturities (19 ) (9 ) Deferred financing costs (4 ) (5 ) Long-term debt, net of current maturities $ 727 $ 736

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2019
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: March 31, 2019 December 31, 2018 Designation of Derivatives Location on Statements of Financial Position Assets Liabilities Assets Liabilities (in millions) Foreign exchange forward contracts – Designated as cash flow hedging instruments Other current assets $ 22 $ — $ 11 $ — Other noncurrent assets 30 — 15 — Accrued expenses and other current liabilities — 12 — 21 Other noncurrent liabilities — 1 — 9 Total 52 13 26 30 Foreign exchange forward contracts – Not designated as hedging instruments Other current assets 3 — 1 — Accrued expenses and other current liabilities — 4 — 4 Total 3 4 1 4 Total $ 55 $ 17 $ 27 $ 34
Notional value of outstanding contracts by year of maturity	March 31, 2019 December 31, 2018 (in millions) 2019 $ 1,130 $ 1,388 2020 965 780 2021 140 — Total notional value of contracts outstanding $ 2,235 $ 2,168 Net unrealized gains (losses) included in accumulated other comprehensive income (loss), net of taxes $ 33 $ (3 )
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 March 31 : Change in Derivative Gains/Losses Recognized in Accumulated Other Comprehensive Income (Loss) (effective portion) Location of Net Derivative Gains and (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion) Net Gains and (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion) 2019 2018 2019 2018 (in millions) Foreign exchange forward contracts – Designated as cash flow hedging instruments $ 39 $ (14 ) Cost of revenues $ (3 ) $ 30 Selling, general and administrative expenses (1 ) 5 Total $ (4 ) $ 35
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: March 31, 2019 December 31, 2018 Notional Fair Value Notional Fair Value (in millions) Contracts outstanding $ 410 $ (1 ) $ 507 $ (3 )
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 months ended March 31 : Location of Net Gains (Losses) on Derivative Instruments Amount of Net Gains (Losses) on Derivative Instruments 2019 2018 (in millions) Foreign exchange forward contracts – Not designated as hedging instruments Foreign currency exchange gains (losses), net $ (1 ) $ 2

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2019
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 March 31, 2019 : Level 1 Level 2 Level 3 Total (in millions) Cash equivalents: Money market funds $ 353 $ — $ — $ 353 Commercial paper — 16 — 16 Total cash equivalents 353 16 — 369 Short-term investments: Time deposits (1) — 506 — 506 Available-for-sale investment securities: U.S. Treasury and agency debt securities 526 47 — 573 Corporate and other debt securities — 371 — 371 Certificates of deposit and commercial paper — 19 — 19 Asset-backed securities — 341 — 341 Municipal debt securities — 57 — 57 Total available-for-sale investment securities 526 835 — 1,361 Held-to-maturity investment securities: Corporate and other debt securities — 418 — 418 Commercial paper — 410 — 410 Total short-term held-to-maturity investment securities — 828 — 828 Total short-term investments (2) 526 2,169 — 2,695 Long-term investments: Held-to-maturity investment securities: Corporate and other debt securities — 6 — 6 Total long-term held-to-maturity investment securities — 6 — 6 Total long-term investments (3) — 6 — 6 Derivative financial instruments - foreign exchange forward contracts: Other current assets — 25 — 25 Accrued expenses and other current liabilities — (16 ) — (16 ) Other noncurrent assets — 30 — 30 Other noncurrent liabilities — (1 ) — (1 ) Total derivative financial instruments - foreign exchange forward contracts — 38 — 38 Contingent consideration liabilities — — (52 ) (52 ) Total $ 879 $ 2,229 $ (52 ) $ 3,056 (1) Includes $427 million in restricted time deposits. See Note 9 . (2) Excludes an equity security invested in a mutual fund valued at $25 million based on the NAV of the fund. (3) Excludes equity and cost method investments of $73 million at March 31, 2019. The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of December 31, 2018 : Level 1 Level 2 Level 3 Total (in millions) Cash equivalents: Money market funds $ 103 $ — $ — $ 103 Bank deposits — 32 — 32 Certificates of deposit and commercial paper — 68 — 68 Total cash equivalents 103 100 — 203 Short-term investments: Time deposits (1) — 500 — 500 Available-for-sale investment securities: U.S. Treasury and agency debt securities 570 55 — 625 Corporate and other debt securities — 416 — 416 Certificates of deposit and commercial paper — 296 — 296 Asset-backed securities — 334 — 334 Municipal debt securities — 89 — 89 Total available-for-sale investment securities 570 1,190 — 1,760 Held-to-maturity investment securities: Corporate and other debt securities — 546 — 546 Commercial paper — 518 — 518 Total short-term held-to-maturity investment securities — 1,064 — 1,064 Total short-term investments (2) 570 2,754 — 3,324 Long-term investments: Held-to-maturity investment securities: Corporate and other debt securities — 6 — 6 Total long-term held-to-maturity investment securities — 6 — 6 Total long-term investments (3) — 6 — 6 Derivative financial instruments - foreign exchange forward contracts: Other current assets — 12 — 12 Accrued expenses and other current liabilities — (25 ) — (25 ) Other noncurrent assets — 15 — 15 Other noncurrent liabilities — (9 ) — (9 ) Total $ 673 $ 2,853 $ — $ 3,526 (1) Includes $423 million in restricted time deposits. See Note 9 . (2) Excludes an equity security invested in a mutual fund valued at $25 million based on the NAV of the fund. (3) Excludes equity and cost method investments of $74 million

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive income (loss) by component were as follows for the three months ended March 31, 2019 : Before Tax Amount Tax Effect Net of Tax Amount (in millions) Foreign currency translation adjustments: Beginning balance $ (108 ) $ 5 $ (103 ) Change in foreign currency translation adjustments (3 ) 1 (2 ) Ending balance $ (111 ) $ 6 $ (105 ) Unrealized (losses) on available-for-sale investment securities: Beginning balance $ (12 ) $ 4 $ (8 ) Net unrealized gains arising during the period 9 (3 ) 6 Reclassification of net losses to Other, net — — — Net change 9 (3 ) 6 Ending balance $ (3 ) $ 1 $ (2 ) Unrealized (losses) gains on cash flow hedges: Beginning balance $ (4 ) $ 1 $ (3 ) Unrealized gains arising during the period 39 (7 ) 32 Reclassifications of net losses to: Cost of revenues 3 — 3 Selling, general and administrative expenses 1 — 1 Net change 43 (7 ) 36 Ending balance $ 39 $ (6 ) $ 33 Accumulated other comprehensive income (loss): Beginning balance $ (124 ) $ 10 $ (114 ) Other comprehensive income (loss) 49 (9 ) 40 Ending balance $ (75 ) $ 1 $ (74 ) Changes in accumulated other comprehensive income (loss) by component were as follows for the three months ended March 31, 2018 : Before Tax Amount Tax Effect Net of Tax Amount (in millions) Foreign currency translation adjustments: Beginning balance $ (38 ) $ — $ (38 ) Change in foreign currency translation adjustments 41 (4 ) 37 Ending balance $ 3 $ (4 ) $ (1 ) Unrealized (losses) on available-for-sale investment securities: Beginning balance $ (11 ) $ 4 $ (7 ) Cumulative effect of change in accounting principle (1) — (1 ) (1 ) Net unrealized (losses) arising during the period (9 ) 1 (8 ) Reclassification of net losses to Other, net 1 — 1 Net change (8 ) — (8 ) Ending balance $ (19 ) $ 4 $ (15 ) Unrealized gains on cash flow hedges: Beginning balance $ 154 $ (39 ) $ 115 Unrealized (losses) arising during the period (14 ) 5 (9 ) Reclassifications of net (gains) to: Cost of revenues (30 ) 7 (23 ) Selling, general and administrative expenses (5 ) 1 (4 ) Net change (49 ) 13 (36 ) Ending balance $ 105 $ (26 ) $ 79 Accumulated other comprehensive income (loss): Beginning balance $ 105 $ (35 ) $ 70 Other comprehensive income (loss) (16 ) 9 (7 ) Ending balance $ 89 $ (26 ) $ 63

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Revenues From External Customers And Segment Operating Profit	ment operating profits, before unallocated expenses, by reportable segment were as follows: Three Months Ended 2019 2018 (in millions) Financial Services $ 400 $ 440 Healthcare 337 337 Products and Resources 234 253 Communications, Media and Technology 174 158 Total segment operating profit 1,145 1,188 Less: unallocated costs 606 495 Income from operations $ 539 $ 693
Revenues And Long-Lived Assets By Geographic Area	Long-lived assets by geographic area are as follows: As of March 31, 2019 December 31, 2018 (in millions) Long-lived Assets: (1) North America (2) $ 420 $ 436 Europe 110 105 Rest of World (3) 784 853 Total $ 1,314 $ 1,394 ________________ (1) Long-lived assets include property and equipment, net of accumulated depreciation and amortization. (2) Substantially all relates to operations in the United States. (3)

Revenues - Capitalized Costs to

Revenues - Capitalized Costs to Fulfill Contract with Customer (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Balance - December 31, 2018	$ 400
Amortization expense	20
Costs capitalized	43
Balance - March 31, 2019	$ 423

Revenues - Significant Movement

Revenues - Significant Movements in Contract Assets (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Balance - December 31, 2018	$ 305
Revenues recognized during the period but not billed	238
Amounts reclassified to accounts receivable	208
Balance - March 31, 2019	$ 335

Revenues - Significant Moveme_2

Revenues - Significant Movements in Deferred Revenue Balances (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Balance - December 31, 2018	$ 348
Amounts billed but not recognized as revenues	205
Revenues recognized related to the opening balance of deferred revenue	149
Balance - March 31, 2019	$ 404

Revenues - Remaining Performanc

Revenues - Remaining Performance Obligations Narrative (Details) $ in Millions	Mar. 31, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation	$ 1,990
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	70.00%
Revenue, remaining performance obligation, period	2 years

Revenues - Disaggregation of Re

Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 4,110	$ 3,912
Time-and-materials [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,152	2,058
Fixed-price [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,468	1,522
Transaction or volume-based [Member]
Disaggregation of Revenue [Line Items]
Revenue	490	332
North America [Member]
Disaggregation of Revenue [Line Items]
Revenue	3,123	2,975
United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	329	310
Europe, excluding United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	405	374
Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	734	684
Rest of World [Member]
Disaggregation of Revenue [Line Items]
Revenue	253	253
Consulting And Technology Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,409	2,268
Outsourcing Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,701	1,644
Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,436	1,461
Financial Services [Member] | Time-and-materials [Member]
Disaggregation of Revenue [Line Items]
Revenue	919	935
Financial Services [Member] | Fixed-price [Member]
Disaggregation of Revenue [Line Items]
Revenue	464	471
Financial Services [Member] | Transaction or volume-based [Member]
Disaggregation of Revenue [Line Items]
Revenue	53	55
Financial Services [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,018	1,044
Financial Services [Member] | United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	129	116
Financial Services [Member] | Europe, excluding United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	162	162
Financial Services [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	291	278
Financial Services [Member] | Rest of World [Member]
Disaggregation of Revenue [Line Items]
Revenue	127	139
Financial Services [Member] | Consulting And Technology Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	913	871
Financial Services [Member] | Outsourcing Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	523	590
Products and Resources [Member]
Disaggregation of Revenue [Line Items]
Revenue	914	821
Products and Resources [Member] | Time-and-materials [Member]
Disaggregation of Revenue [Line Items]
Revenue	400	369
Products and Resources [Member] | Fixed-price [Member]
Disaggregation of Revenue [Line Items]
Revenue	414	361
Products and Resources [Member] | Transaction or volume-based [Member]
Disaggregation of Revenue [Line Items]
Revenue	100	91
Products and Resources [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Revenue	641	572
Products and Resources [Member] | United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	94	87
Products and Resources [Member] | Europe, excluding United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	115	109
Products and Resources [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	209	196
Products and Resources [Member] | Rest of World [Member]
Disaggregation of Revenue [Line Items]
Revenue	64	53
Products and Resources [Member] | Consulting And Technology Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	552	481
Products and Resources [Member] | Outsourcing Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	362	340
Communication, Media and Technology [Member]
Disaggregation of Revenue [Line Items]
Revenue	595	509
Communication, Media and Technology [Member] | Time-and-materials [Member]
Disaggregation of Revenue [Line Items]
Revenue	375	306
Communication, Media and Technology [Member] | Fixed-price [Member]
Disaggregation of Revenue [Line Items]
Revenue	190	179
Communication, Media and Technology [Member] | Transaction or volume-based [Member]
Disaggregation of Revenue [Line Items]
Revenue	30	24
Communication, Media and Technology [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Revenue	422	336
Communication, Media and Technology [Member] | United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	81	84
Communication, Media and Technology [Member] | Europe, excluding United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	46	42
Communication, Media and Technology [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	127	126
Communication, Media and Technology [Member] | Rest of World [Member]
Disaggregation of Revenue [Line Items]
Revenue	46	47
Communication, Media and Technology [Member] | Consulting And Technology Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	306	278
Communication, Media and Technology [Member] | Outsourcing Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	289	231
Healthcare Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,165	1,121
Healthcare Segment [Member] | Time-and-materials [Member]
Disaggregation of Revenue [Line Items]
Revenue	458	448
Healthcare Segment [Member] | Fixed-price [Member]
Disaggregation of Revenue [Line Items]
Revenue	400	511
Healthcare Segment [Member] | Transaction or volume-based [Member]
Disaggregation of Revenue [Line Items]
Revenue	307	162
Healthcare Segment [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,042	1,023
Healthcare Segment [Member] | United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	25	23
Healthcare Segment [Member] | Europe, excluding United Kingdom [Member]
Disaggregation of Revenue [Line Items]
Revenue	82	61
Healthcare Segment [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	107	84
Healthcare Segment [Member] | Rest of World [Member]
Disaggregation of Revenue [Line Items]
Revenue	16	14
Healthcare Segment [Member] | Consulting And Technology Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	638	638
Healthcare Segment [Member] | Outsourcing Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 527	$ 483

Business Combinations Narrative

Business Combinations Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)business	Mar. 31, 2018business
Business Acquisition [Line Items]
Number of businesses acquired		0
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Number of businesses acquired	2
Consideration transferred | $	$ 244

Business Combinations Allocatio

Business Combinations Allocation of Purchase Price (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill	$ 3,638	$ 3,481
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Cash	14
Current assets	8
Goodwill	157
Current liabilities	4
Noncurrent liabilities	11
Purchase price	244
Customer Relationships [Member] | Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 50
Weighted Average Useful Life	9 years 10 months 24 days
Other Intangible Assets [Member] | Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 30
Weighted Average Useful Life	6 years 10 months 24 days

Realignment Charges (Details)

Realignment Charges (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Realignment Charges	$ 2	$ 1
Employee separations [Member]
Restructuring Cost and Reserve [Line Items]
Realignment Charges	2	0
Lease termination costs [Member]
Restructuring Cost and Reserve [Line Items]
Realignment Charges	$ 0	$ 1

Investments (Details)

Investments (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Short-term investments:
Equity investment securities	$ 25	$ 25
Available-for-sale investment securities	1,361	1,760
Held-to-maturity investment securities	826	1,065
Time Deposits	506	500
Total short-term investments	2,718	3,350
Long-term investments:
Equity and cost method investments	73	74
Held-to-maturity investment securities	6	6
Total long-term investments	79	80
Restricted investments	$ 427	$ 423

Investments (Amortized Cost, Gr

Investments (Amortized Cost, Gross Unrealized Gains And Losses And Fair Value Of Investment Securities Available-For-Sale) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,364	$ 1,772
Unrealized Gains	3	1
Unrealized Losses	(6)	(13)
Available-for-sale securities, current	1,361	1,760
U.S. Treasury And Agency Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	576	630
Unrealized Gains	1	1
Unrealized Losses	(4)	(6)
Available-for-sale securities, current	573	625
Corporate And Other Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	371	420
Unrealized Gains	1	0
Unrealized Losses	(1)	(4)
Available-for-sale securities, current	371	416
Certificates of Deposit and Commercial Paper [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	19	296
Unrealized Gains	0	0
Unrealized Losses	0	0
Available-for-sale securities, current	19	296
Asset-Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	341	336
Unrealized Gains	1	0
Unrealized Losses	(1)	(2)
Available-for-sale securities, current	341	334
Municipal Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	57	90
Unrealized Gains	0	0
Unrealized Losses	0	(1)
Available-for-sale securities, current	$ 57	$ 89

Investments (Securities In A Co

Investments (Securities In A Continuous Unrealized Loss Position) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Schedule of Short-term Investments [Table] [Line Items]
Fair Value available-for-sale securities Less than 12 Months	$ 70	$ 597
Unrealized losses, available-for-sale securities, Less than 12 Months	0	(1)
Fair value available-for-sale securities 12 Months or More	834	943
Unrealized losses, available-for-sale securities, 12 Months or More	(6)	(12)
Total Fair Value available-for-sale securities	904	1,540
Unrealized losses, available-for-sale securities, Total	(6)	(13)
U.S. Treasury And Agency Debt Securities [Member]
Schedule of Short-term Investments [Table] [Line Items]
Fair Value available-for-sale securities Less than 12 Months	13	84
Unrealized losses, available-for-sale securities, Less than 12 Months	0	0
Fair value available-for-sale securities 12 Months or More	412	446
Unrealized losses, available-for-sale securities, 12 Months or More	(4)	(6)
Total Fair Value available-for-sale securities	425	530
Unrealized losses, available-for-sale securities, Total	(4)	(6)
Corporate And Other Debt Securities [Member]
Schedule of Short-term Investments [Table] [Line Items]
Fair Value available-for-sale securities Less than 12 Months	15	108
Unrealized losses, available-for-sale securities, Less than 12 Months	0	(1)
Fair value available-for-sale securities 12 Months or More	233	254
Unrealized losses, available-for-sale securities, 12 Months or More	(1)	(3)
Total Fair Value available-for-sale securities	248	362
Unrealized losses, available-for-sale securities, Total	(1)	(4)
Certificates of Deposit and Commercial Paper [Member]
Schedule of Short-term Investments [Table] [Line Items]
Fair Value available-for-sale securities Less than 12 Months	8	295
Unrealized losses, available-for-sale securities, Less than 12 Months	0	0
Fair value available-for-sale securities 12 Months or More	0	0
Unrealized losses, available-for-sale securities, 12 Months or More	0	0
Total Fair Value available-for-sale securities	8	295
Unrealized losses, available-for-sale securities, Total	0	0
Asset-Backed Securities [Member]
Schedule of Short-term Investments [Table] [Line Items]
Fair Value available-for-sale securities Less than 12 Months	33	93
Unrealized losses, available-for-sale securities, Less than 12 Months	0	0
Fair value available-for-sale securities 12 Months or More	157	179
Unrealized losses, available-for-sale securities, 12 Months or More	(1)	(2)
Total Fair Value available-for-sale securities	190	272
Unrealized losses, available-for-sale securities, Total	(1)	(2)
Municipal Debt Securities [Member]
Schedule of Short-term Investments [Table] [Line Items]
Fair Value available-for-sale securities Less than 12 Months	1	17
Unrealized losses, available-for-sale securities, Less than 12 Months	0	0
Fair value available-for-sale securities 12 Months or More	32	64
Unrealized losses, available-for-sale securities, 12 Months or More	0	(1)
Total Fair Value available-for-sale securities	33	81
Unrealized losses, available-for-sale securities, Total	$ 0	$ (1)

Investments (Contractual Maturi

Investments (Contractual Maturities Of Investments In Debt Securities) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Amortized Cost
Due within one year, available-for-sale	$ 299
Due within one year, held-to-maturity	826
Due after one year up to two years, available-for-sale	485
Due after one year up to two years, held-to-maturity	6
Due after two years up to three years, available-for-sale	179
Due after three years, available-for-sale	60
Asset-backed securities	341
Amortized Cost, available-for-sale	1,364
Amortized Cost, held-to-maturity	832	$ 1,071
Fair Value
Due within one year, available-for-sale	297
Due within one year, held-to-maturity	828
Due after one year up to two years, available-for-sale	482
Due after one year up to two years, available-for-sale	6
Due after two years up to three years, available-for-sale	180
Due after three years	61
Asset-backed securities	341
Fair Value, available-for-sale	1,361
Fair Value, held-to-maturity	$ 834	$ 1,070

Investments (Gross Gains (Losse

Investments (Gross Gains (Losses) Realized On Sales, Maturities And Other Securities Transactions Related To Investment Securities) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Investments [Abstract]
Proceeds from sales of available-for-sale investment securities	$ 314	$ 125
Gross gains	1	0
Gross losses	(1)	(1)
Net realized gains on sales of available-for-sale investment securities	$ 0	$ (1)

Investments (Schedule of Held-t

Investments (Schedule of Held-to-Maturity Securities) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost, Current	$ 826	$ 1,065
Amortized Cost, Noncurrent	6	6
Unrealized Gains	2	0
Unrealized Losses	0	(1)
Fair Value	834	1,070
Amortized Cost, held-to-maturity	832	1,071
Less than 12 Months, Fair Value	121	531
Less than 12 Months, Unrealized Losses	0	(1)
12 Months or More, Fair Value	6	57
12 Months or More, Unrealized Losses	0	0
Fair Value	127	588
Unrealized Losses	0	(1)
Corporate And Other Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	29	263
Less than 12 Months, Unrealized Losses	0	0
12 Months or More, Fair Value	6	57
12 Months or More, Unrealized Losses	0	0
Fair Value	35	320
Unrealized Losses	0	0
Commercial Paper [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	92	268
Less than 12 Months, Unrealized Losses	0	(1)
12 Months or More, Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
Fair Value	92	268
Unrealized Losses	0	(1)
Short-term Investments [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost, Current	826	1,065
Unrealized Gains	2	0
Unrealized Losses	0	(1)
Fair Value	828	1,064
Short-term Investments [Member] | Corporate And Other Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost, Current	417	546
Unrealized Gains	1	0
Unrealized Losses	0	0
Fair Value	418	546
Short-term Investments [Member] | Commercial Paper [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost, Current	409	519
Unrealized Gains	1	0
Unrealized Losses	0	(1)
Fair Value	410	518
Long-term investments [Member] | Corporate And Other Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost, Noncurrent	6	6
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	$ 6	$ 6

Leases (Details)

Leases (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 63
Variable lease cost	4
Short term lease rental expense	4
Amount of operating leases not yet commenced	$ 29
Minimum
Lessee, Lease, Description [Line Items]
Term of operating leases	12 months
Lease terms of leases not yet commenced	1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease terms of leases not yet commenced	6 years

Leases - Schedule of Impact of

Leases - Schedule of Impact of Lease Standard (Details) - USD ($) $ in Millions	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property and equipment, net	$ 1,314		$ 1,394
Operating lease assets, net	809
Total assets	16,096		15,913
Operating lease liabilities	184
Operating lease liabilities, noncurrent	651
Accrued expenses and other current liabilities	1,915		2,267
Other noncurrent liabilities	150		253
Total liabilities	4,960		4,489
Retained earnings	$ 11,140		$ 11,485
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property and equipment, net		$ (81)
Operating lease assets, net		839
Total assets		758
Operating lease liabilities		191
Operating lease liabilities, noncurrent		670
Accrued expenses and other current liabilities		(10)
Other noncurrent liabilities		(95)
Total liabilities		756
Retained earnings		$ 2

Leases - Schedule of Leases Sta

Leases - Schedule of Leases Statement of Financial Position (Details) $ in Millions	Mar. 31, 2019USD ($)
Leases [Abstract]
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentNet
Assets
ROU operating lease assets	$ 809
ROU finance lease assets	21
Total Leased Assets	830
Current
Operating lease	184
Finance lease	13
Noncurrent
Operating lease	651
Finance lease	17
Total leased liabilities	$ 865
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesAndOtherLiabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent

Leases - Schedule of Operating

Leases - Schedule of Operating Lease Term and Discount Rate (Details)	Mar. 31, 2019
Leases [Abstract]
Weighted average remaining lease term	5 years 9 months 18 days
Weighted-average discount rate	5.80%

Leases - Schedule of Cash Flow

Leases - Schedule of Cash Flow and Other Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Leases [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities	$ 53
ROU assets obtained in exchange for operating lease liabilities	$ 16

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Payments on Operating Leases (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Leases [Abstract]
2019- remainder of year	$ 171
2019		$ 226
2020		197
2021		157
2022		121
2023		90
2024	62
Thereafter	154
Lessee, Operating Lease, Liability, Payments, Due	983
Thereafter		197
Total lease payments		$ 988
Interest	(148)
Total lease liabilities	835
Lessee, Operating Lease, Liability, Payments, Due Year Two	209
Lessee, Operating Lease, Liability, Payments, Due Year Three	166
Lessee, Operating Lease, Liability, Payments, Due Year Four	126
Lessee, Operating Lease, Liability, Payments, Due Year Five	$ 95

Accrued Expenses And Other Cu_3

Accrued Expenses And Other Current Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Compensation and benefits	$ 931	$ 1,216
Customer volume and other incentives	329	323
Derivative financial instruments	16	25
FCPA Accrual	0	28
Income taxes	130	162
Professional fees	115	110
Travel and entertainment	35	34
Other	359	369
Total accrued expenses and other current liabilities	$ 1,915	$ 2,267

Debt (Additional Disclosures) (

Debt (Additional Disclosures) (Details) $ in Millions	Nov. 30, 2018USD ($)
Term Loan [Member]
Line of Credit Facility [Line Items]
Principal amount of debt	$ 750
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 1,750

Debt (Short-term Debt) (Details

Debt (Short-term Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Short-term Debt [Line Items]
Short-term debt	$ 19	$ 9
Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Notes outstanding under revolving credit facility	0
Term Loan [Member]
Short-term Debt [Line Items]
Short-term debt	$ 19	$ 9

Debt (Long-term Debt) (Details)

Debt (Long-term Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Long-term debt, net of current maturities	$ 727	$ 736
Term Loan [Member]
Debt Instrument [Line Items]
Term loan	750	750
Current maturities	(19)	(9)
Deferred financing costs	(4)	(5)
Long-term debt, net of current maturities	$ 727	$ 736

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) $ in Millions	Mar. 31, 2018USD ($)
Income Tax Disclosure [Abstract]
Restricted Cash	$ 159

Income Taxes (Narrative) (One-t

Income Taxes (Narrative) (One-time Transaction) (Details) $ in Millions, ₨ in Billions	1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2013USD ($)	Mar. 31, 2019INR (₨)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Apr. 30, 2018INR (₨)
One-time Transaction [Table] [Line Items]
Income tax expense		$ 142	$ 177
Restricted investments							$ 427	$ 423
Indian Income Tax Department (ITD) [Member] | Foreign tax authority [Member]
One-time Transaction [Table] [Line Items]
Deposits assets						₨ 5	$ 71	71
Desposits assets, percent disputed tax amount						15.00%	15.00%
Restricted investments initially deposited							$ 406	$ 404
Restricted investments | ₨									₨ 28
Indian Income Tax Department (ITD) [Member] | Foreign tax authority [Member] | 2016 India Cash Remittance [Member]
One-time Transaction [Table] [Line Items]
Foreign earnings repatriated	$ 2,800
Income tax expense				$ 135
Income tax, disputed amount						₨ 33	$ 477
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	Mar. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Derivative assets fair value	$ 55	$ 27
Derivative liabilities fair value	17	34
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	52	26
Derivative liabilities fair value	13	30
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	22	11
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Noncurrent Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	30	15
Cash Flow Hedging [Member] | 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	12	21
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities fair value	1	9
Other Derivatives [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	3	1
Derivative liabilities fair value	4	4
Other Derivatives [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	3	1
Other Derivatives [Member] | 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	$ 4	$ 4

Derivative Financial Instrume_4

Derivative Financial Instruments (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Cash flow hedge gains (losses) expected to be reclassified to earnings within the next 12 months	$ 9
Cash flow hedge ineffectiveness is immaterial	Hedge ineffectiveness was immaterial for all periods presented.

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) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Foreign Exchange Forward [Member]
Derivative [Line Items]
Net unrealized gains (losses) included in accumulated other comprehensive income (loss), net of taxes	$ 33	$ (3)
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Notional value of contracts outstanding	2,235	2,168
Designated as Hedging Instrument [Member] | Foreign Exchange Forward, Maturity 2019 [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Notional value of contracts outstanding	1,130	1,388
Designated as Hedging Instrument [Member] | Foreign Exchange Forward, Maturity 2020 [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Notional value of contracts outstanding	965	780
Designated as Hedging Instrument [Member] | Foreign Exchange Forward, Maturity 2021 [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Notional value of contracts outstanding	$ 140	$ 0

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
	Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains and (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	$ (4)	$ 35
Cost Of Revenues [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains and (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	(3)	30
Selling, General and Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains and (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	(1)	5
Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Change in Derivative Gains/Losses Recognized in Accumulated Other Comprehensive Income (Loss) (effective portion)	$ 39	$ (14)

Derivative Financial Instrume_7

Derivative Financial Instruments (Other Derivatives) (Details) - Not Designated as Hedging Instrument [Member] - Foreign Exchange Forward [Member] - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Notional	$ 410	$ 507
Market Value	$ (1)	$ (3)

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
	Mar. 31, 2019	Mar. 31, 2018
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)	$ 2

Fair Value Measurements (Financ

Fair Value Measurements (Financial Assets And (Liabilities) Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	$ 834	$ 1,070
Restricted investments	427	423
Trading securities	25	25
Equity and Cost Method Investments	73	74
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	369	203
Time deposits	506	500
Available-for-sale investment securities	1,361	1,760
Derivative financial instruments, assets	38
Contingent consideration liabilities	(52)
Total	3,056	3,526
Recurring [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	25	12
Recurring [Member] | Accrued Expenses And Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, liabilities	(16)	(25)
Recurring [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	30	15
Recurring [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, liabilities	(1)	(9)
Recurring [Member] | U.S. Treasury And Agency Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	573	625
Recurring [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	371	416
Recurring [Member] | Certificates of Deposit and Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	19	296
Recurring [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	341	334
Recurring [Member] | Municipal Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	57	89
Recurring [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	353	103
Recurring [Member] | Bank Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		32
Recurring [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	16	68
Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	353	103
Time deposits	0	0
Available-for-sale investment securities	526	570
Derivative financial instruments, assets	0
Contingent consideration liabilities	0
Total	879	673
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]
Derivative financial instruments, liabilities	0	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]
Derivative financial instruments, liabilities	0	0
Recurring [Member] | Level 1 [Member] | U.S. Treasury And Agency Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	526	570
Recurring [Member] | Level 1 [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 1 [Member] | Certificates of Deposit and Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 1 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 1 [Member] | Municipal Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 1 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	353	103
Recurring [Member] | Level 1 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	16	100
Time deposits	506	500
Available-for-sale investment securities	835	1,190
Derivative financial instruments, assets	38
Contingent consideration liabilities	0
Total	2,229	2,853
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	25	12
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]
Derivative financial instruments, liabilities	(16)	(25)
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	30	15
Recurring [Member] | Level 2 [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, liabilities	(1)	(9)
Recurring [Member] | Level 2 [Member] | U.S. Treasury And Agency Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	47	55
Recurring [Member] | Level 2 [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	371	416
Recurring [Member] | Level 2 [Member] | Certificates of Deposit and Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	19	296
Recurring [Member] | Level 2 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	341	334
Recurring [Member] | Level 2 [Member] | Municipal Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	57	89
Recurring [Member] | Level 2 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		0
Recurring [Member] | Level 2 [Member] | Bank Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		32
Recurring [Member] | Level 2 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	16	68
Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		0
Time deposits	0	0
Available-for-sale investment securities	0	0
Derivative financial instruments, assets	0
Contingent consideration liabilities	(52)
Total	(52)	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]
Derivative financial instruments, liabilities	0	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]
Derivative financial instruments, liabilities	0	0
Recurring [Member] | Level 3 [Member] | U.S. Treasury And Agency Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 3 [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0
Recurring [Member] | Level 3 [Member] | Certificates of Deposit and Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 3 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 3 [Member] | Municipal Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 3 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		0
Recurring [Member] | Level 3 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	828	1,064
Short-term Investments [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	410	518
Short-term Investments [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	418	546
Short-term Investments [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	828	1,064
Investments	2,695	3,324
Short-term Investments [Member] | Recurring [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	410	518
Short-term Investments [Member] | Recurring [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	418	546
Short-term Investments [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	0	0
Investments	526	570
Short-term Investments [Member] | Recurring [Member] | Level 1 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	0	0
Short-term Investments [Member] | Recurring [Member] | Level 1 [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	0	0
Short-term Investments [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	828	1,064
Investments	2,169	2,754
Short-term Investments [Member] | Recurring [Member] | Level 2 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	410	518
Short-term Investments [Member] | Recurring [Member] | Level 2 [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	418	546
Short-term Investments [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	0	0
Investments	0	0
Short-term Investments [Member] | Recurring [Member] | Level 3 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	0	0
Short-term Investments [Member] | Recurring [Member] | Level 3 [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	0	0
Long-term investments [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	6	6
Long-term investments [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	6	6
Investments	6	6
Long-term investments [Member] | Recurring [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	6	6
Long-term investments [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	0	0
Investments	0	0
Long-term investments [Member] | Recurring [Member] | Level 1 [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	0	0
Long-term investments [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	6	6
Investments	6	6
Long-term investments [Member] | Recurring [Member] | Level 2 [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	6	6
Long-term investments [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	0	0
Investments	0	0
Long-term investments [Member] | Recurring [Member] | Level 3 [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Held-to-maturity, Fair Value	$ 0	$ 0

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	$ 11,424	$ 10,669
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change, Net of Tax Amount	(2)	37
Cumulative effect of changes in accounting principle	2	121
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent	6	(7)
Other comprehensive income (loss)	40	(6)
AOCI, ending balance	11,136	10,988
Foreign currency translation adjustments: [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before tax, beginning balance	(108)	(38)
AOCI tax, beginning balance	5	0
AOCI, beginning balance	(103)	(38)
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change, Before Tax Amount	(3)	41
Net change, Tax Effect	(1)	4
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Other comprehensive income (loss)		37
AOCI before tax, ending balance	(111)	3
AOCI tax, ending balance	6	(4)
AOCI, ending balance	(105)	(1)
Unrealized gains (losses) on available-for-sale investment securities: [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before tax, beginning balance	(12)	(11)
AOCI tax, beginning balance	4	4
AOCI, beginning balance	(8)	(7)
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change, Before Tax Amount	9	(8)
Net change, Tax Effect	3	0
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
OCI, before reclassifications, before tax	9	(9)
Other comprehensive income (loss) before reclassifications, tax	(3)	1
OCI, before reclassifications, net of tax	6	(8)
Reclassification from AOCI, current period, before tax	0	1
Reclassification from AOCI, current period, tax	0	0
Reclassification from AOCI, current period, net of tax	0	1
Other comprehensive income (loss)	6	(8)
AOCI before tax, ending balance	(3)	(19)
AOCI tax, ending balance	1	4
AOCI, ending balance	(2)	(15)
Unrealized gains on cash flow hedges: [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before tax, beginning balance	(4)	154
AOCI tax, beginning balance	1	(39)
AOCI, beginning balance	(3)	115
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change, Before Tax Amount	43	(49)
Net change, Tax Effect	7	(13)
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
OCI, before reclassifications, before tax	39	(14)
Other comprehensive income (loss) before reclassifications, tax	(7)	5
OCI, before reclassifications, net of tax	32	(9)
Other comprehensive income (loss)	36	(36)
AOCI before tax, ending balance	39	105
AOCI tax, ending balance	(6)	(26)
AOCI, ending balance	33	79
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	3	(30)
Reclassification from AOCI, current period, tax	0	7
Reclassification from AOCI, current period, net of tax	3	(23)
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	1	(5)
Reclassification from AOCI, current period, tax	0	1
Reclassification from AOCI, current period, net of tax	1	(4)
Accumulated other comprehensive income (loss):
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before tax, beginning balance	(124)	105
AOCI tax, beginning balance	10	(35)
AOCI, beginning balance	(114)	70
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change, Before Tax Amount	49	(16)
Net change, Tax Effect	9	(9)
Cumulative Tax Effect Of New Accounting Principle In Period Of Adoption		1
Cumulative effect of changes in accounting principle		(1)
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Other comprehensive income (loss)	40	(7)
AOCI before tax, ending balance	(75)	89
AOCI tax, ending balance	1	(26)
AOCI, ending balance	$ (74)	$ 63

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($) $ in Millions	1 Months Ended
	Feb. 28, 2019	Mar. 31, 2019	Dec. 31, 2018
Other Commitments [Line Items]
Accrued Liabilities and Other Liabilities		$ 1,915	$ 2,267
Insurance receivable for malpractice		6
FCPA Accrual [Member]
Other Commitments [Line Items]
Litigation Settlement, Amount Awarded to Other Party	$ 28
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
	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Income from operations	$ 539	$ 693
Operating Segments [Member]
Segment Reporting Information [Line Items]
Income from operations	1,145	1,188
Operating Segments [Member] | Financial Services [Member]
Segment Reporting Information [Line Items]
Income from operations	400	440
Operating Segments [Member] | Health Care [Member]
Segment Reporting Information [Line Items]
Income from operations	337	337
Operating Segments [Member] | Products and Resources [Member]
Segment Reporting Information [Line Items]
Income from operations	234	253
Operating Segments [Member] | Communications, Media and Technology [Member]
Segment Reporting Information [Line Items]
Income from operations	174	158
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Unallocated costs	$ 606	$ 495

Segment Information (Long-Lived

Segment Information (Long-Lived Assets By Geographic Area) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Long-Lived Assets [Line Items]
Long-lived Assets	$ 1,314	$ 1,394
North America [Member]
Long-Lived Assets [Line Items]
Long-lived Assets	420	436
Europe [Member]
Long-Lived Assets [Line Items]
Long-lived Assets	110	105
Rest of World [Member]
Long-Lived Assets [Line Items]
Long-lived Assets	$ 784	$ 853

Subsequent Events (Details)

Subsequent Events (Details)	May 01, 2019$ / shares
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends declared per common share	$ 0.20