Cognizant Technology Solutions (CTSH) 10-Q 6 Nov 14 2014 Q3 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 31, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'CTSH	'
Entity Registrant Name	'COGNIZANT TECHNOLOGY SOLUTIONS CORP	'
Entity Central Index Key	'0001058290	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	608,917,740

Condensed_Consolidated_Stateme

Condensed Consolidated Statements Of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]	'	'	'	'
Revenues	$2,581,009	$2,305,723	$7,520,451	$6,487,701
Cost of Services, Excluding Depreciation, Depletion, and Amortization	1,569,828	1,382,336	4,501,734	3,854,314
Operating expenses:	'	'	'	'
Selling, general and administrative expenses	506,019	443,376	1,474,399	1,277,106
Depreciation and amortization expense	47,649	42,652	138,848	126,212
Income from operations	457,513	437,359	1,405,470	1,230,069
Other income (expense), net:	'	'	'	'
Interest income	17,201	10,696	44,838	37,023
Foreign currency exchange gains (losses), net	-11,222	-9,189	-13,191	-32,014
Other, net	247	332	1,648	1,700
Total other income (expense), net	6,226	1,839	33,295	6,709
Income before provision for income taxes	463,739	439,198	1,438,765	1,236,778
Provision for income taxes	108,115	119,571	362,355	332,532
Net income	$355,624	$319,627	$1,076,410	$904,246
Basic earnings per share (in dollars per share)	$0.58	$0.53	$1.77	$1.50
Diluted earnings per share (in dollars per share)	$0.58	$0.53	$1.76	$1.48
Weighted average number of common shares outstanding - Basic	608,070	603,265	607,894	603,437
Dilutive effect of shares issuable under stock-based compensation plans	4,053	5,284	4,500	5,827
Weighted average number of common shares outstanding - Diluted	612,123	608,549	612,394	609,264

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income	$355,624	$319,627	$1,076,410	$904,246
Other comprehensive income (loss), net of tax:	'	'	'	'
Foreign currency translation adjustments	-31,962	25,346	-30,826	5,183
Change in unrealized losses on cash flow hedges, net of taxes	21,565	-77,067	184,135	-139,156
Change in unrealized gains and losses on available-for-sale securities, net of taxes	-1,801	1,234	-708	-1,433
Other comprehensive income (loss)	-12,198	-50,487	152,601	-135,406
Comprehensive income	$343,426	$269,140	$1,229,011	$768,840

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements Of Financial Position (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'		'
Cash and cash equivalents	$2,617,619		$2,213,006
Short-term investments	2,000,860		1,534,467
Trade accounts receivable, net of allowances of $29,415 and $26,824, respectively	1,809,038		1,648,785
Unbilled accounts receivable	338,093		226,487
Deferred income tax assets, net	259,474		256,230
Other current assets	234,942		268,907
Total current assets	7,260,026		6,147,882
Property and equipment, net of accumulated depreciation of $807,865 and $719,336, respectively	1,101,468	[1]	1,081,164	[1]
Goodwill	437,776		444,236
Intangible assets, net	109,692		131,274
Deferred income tax assets, net	142,733		147,149
Other noncurrent assets	175,348		183,013
Total assets	9,227,043		8,134,718
Liabilities and Stockholders' Equity	'		'
Accounts payable	130,040		113,394
Deferred revenue	169,385		182,893
Accrued Liabilities and Other Liabilities	1,442,039		1,478,221
Total current liabilities	1,741,464		1,774,508
Deferred income tax liabilities, net	18,041		21,170
Other noncurrent liabilities	85,828		203,249
Total liabilities	1,845,333		1,998,927
Commitments and contingencies	'		'
Stockholders' Equity:	'		'
Preferred stock, $0.10 par value, 15,000 shares authorized, none issued	0		0
Class A common stock, $0.01 par value, 1,000,000 shares authorized, 608,911 and 607,729 shares issued and outstanding at September 30, 2014 and December 31, 2013, respectively	6,089		6,077
Additional paid-in capital	560,502		543,606
Retained earnings	6,938,777		5,862,367
Accumulated other comprehensive income (loss)	-123,658		-276,259
Total stockholders’ equity	7,381,710		6,135,791
Total liabilities and stockholders’ equity	$9,227,043		$8,134,718
[1]	Long-lived assets include property and equipment, net of accumulated depreciation and amortization.

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements Of Financial Position (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Trade accounts receivable, allowances	$29,415	$26,824
Property and equipment, accumulated depreciation	$807,865	$719,336
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	608,911,000	607,729,000
Class A common stock, shares outstanding	608,911,000	607,729,000

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:	'	'
Net income	$1,076,410	$904,246
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	145,191	132,013
Provision for doubtful accounts	2,878	5,985
Deferred income taxes	-43,373	-22,844
Stock-based compensation expense	100,622	86,353
Excess tax benefits on stock-based compensation plans	-14,547	-16,450
Other	12,796	52,171
Changes in assets and liabilities:	'	'
Trade accounts receivable	-167,655	-273,502
Other current assets	-75,821	-56,647
Other noncurrent assets	22,880	-9,604
Accounts payable	44,601	3,251
Other current and noncurrent liabilities	44,832	112,931
Net cash provided by operating activities	1,148,814	917,903
Cash flows from investing activities:	'	'
Purchases of property and equipment	-137,547	-154,346
Purchases of investments	-2,180,305	-1,368,812
Proceeds from maturity or sale of investments	1,702,703	1,297,258
Business combinations, net of cash acquired	-11,487	-152,476
Net cash (used in) investing activities	-626,636	-378,376
Cash flows from financing activities:	'	'
Issuance of common stock under stock-based compensation plans	49,853	76,837
Excess tax benefits on stock-based compensation plans	14,547	16,450
Repurchases of common stock	-171,288	-154,336
Debt issuance costs	-1,500	0
Net cash (used in) financing activities	-108,388	-61,049
Effect of exchange rate changes on cash and cash equivalents	-9,177	-17,436
Increase in cash and cash equivalents	404,613	461,042
Cash and cash equivalents, beginning of year	2,213,006	1,570,077
Cash and cash equivalents, end of period	$2,617,619	$2,031,119

Interim_Condensed_Consolidated

Interim Condensed Consolidated Financial Statements	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Interim Condensed Consolidated Financial Statements	'
	Interim Condensed Consolidated Financial Statements
	The terms “Cognizant,” “we,” “our,” “us” and “company” refer to Cognizant Technology Solutions Corporation unless the context indicates otherwise. We have prepared the accompanying unaudited condensed consolidated financial statements included herein in accordance with generally accepted accounting principles in the United States of America, or U.S. GAAP, and Article 10 of Regulation S-X under the Securities Exchange Act of 1934, as amended. The accompanying unaudited condensed 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, 2013. In our opinion, all adjustments considered necessary for a fair presentation of the accompanying unaudited condensed 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.
	In August 2014, the company announced that its Board of Directors approved an expansion of its stock repurchase program. The Board of Directors increased the company’s stock repurchase authorization under the program from $1,500,000 to $2,000,000 and extended the term of the stock repurchase program from December 31, 2014 to December 31, 2015.
	During the nine months ended September 30, 2014, we repurchased 2,700,000 shares of our Class A common stock for $130,246, inclusive of fees and expenses, under our existing stock repurchase program approved by our Board of Directors. As of September 30, 2014, the remaining available balance under the Board authorization was $871,899. Additional stock repurchases were made in connection with our stock-based compensation plans, whereby company shares were tendered by employees for payment of applicable statutory tax withholdings. During the nine months ended September 30, 2014, such repurchases totaled 849,465 shares at an aggregate cost of $41,042.
	Stock Split
	On February 4, 2014, the company’s Board of Directors declared a two-for-one stock split of our Class A common stock in the form of a 100% stock dividend, which was paid on March 7, 2014 to stockholders of record as of February 21, 2014. The stock split has been reflected in the accompanying condensed consolidated financial statements, and all applicable references as to the number of outstanding common shares and per share information, except par values, have been retroactively adjusted to reflect the stock split as if it occurred at the beginning of the earliest period presented. Stockholders’ equity accounts have been retroactively adjusted to reflect a reclassification of an amount equal to the par value of the increase in issued shares of Class A common stock from the additional paid-in-capital account to the Class A common stock account.
	Recently Adopted Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board, or FASB, issued a standard on revenue from contracts with customers. The new standard sets forth a single comprehensive model for recognizing and reporting revenue. The standard also requires additional financial statement disclosures that will enable users to understand the nature, amount, timing and uncertainty of revenue and cash flows relating to customer contracts. The new standard will be effective for periods beginning on or after January 1, 2017. Early adoption is not permitted. The standard allows for two methods of adoption: the full retrospective adoption, which requires the standard to be applied to each prior period presented, or the modified retrospective adoption, which requires the cumulative effect of adoption to be recognized as an adjustment to opening retained earnings in the period of adoption. We are currently evaluating the effect the new standard will have on our consolidated financial statements and related disclosures.
	In July 2013, the FASB issued new guidance which requires the netting of any unrecognized tax benefits against all available same-jurisdiction deferred income tax carryforward assets that would apply if the uncertain tax positions were settled. We adopted this standard on January 1, 2014. As of September 30, 2014, we netted an unrecognized tax benefit of $81,161 against same-jurisdiction non-current deferred income tax assets. In our December 31, 2013 consolidated statement of financial position, we reclassified $74,196 from "other non-current liabilities" to non-current "deferred income tax assets, net" to conform to current period's presentation. The adoption of this standard had no effect on our condensed consolidated results of operations or stockholder's equity.

Shortterm_Investments

Short-term Investments	9 Months Ended
	Sep. 30, 2014
Investments [Abstract]	'
Short-term Investments	'
	Short-term Investments
	Our short-term investments were as follows:
		30-Sep-14			31-Dec-13
	Available-for-sale investment securities:
	U.S. Treasury and agency debt securities	$	678,793		$	506,285
	Corporate and other debt securities	400,634			301,841
	Certificates of deposit and commercial paper	68,971			99,959
	Asset-backed securities	228,019			160,267
	Municipal debt securities	114,514			115,196
	Mutual funds	21,741			21,136
	Total available-for-sale investment securities	1,512,672			1,204,684
	Time deposits	488,188			329,783
	Total short-term investments	$	2,000,860		$	1,534,467
	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, mutual funds invested in fixed income securities, and asset-backed securities, including Government National Mortgage Association (GNMA) mortgage backed securities and 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 carrying value of the time deposits approximated fair value as of September 30, 2014 and December 31, 2013.
	Available-for-Sale Investment Securities
	The amortized cost, gross unrealized gains and losses and fair value of available-for-sale investment securities at September 30, 2014 were as follows:
		Amortized			Unrealized			Unrealized			Fair
		Cost			Gains			Losses			Value
	U.S. Treasury and agency debt securities	$	678,771		$	509		$	(487	)	$	678,793
	Corporate and other debt securities	400,683			605			(654		)	400,634
	Certificates of deposit and commercial paper	68,915			56			—			68,971
	Asset-backed securities	228,298			109			(388		)	228,019
	Municipal debt securities	114,018			508			(12		)	114,514
	Mutual funds	23,590			297			(2,146		)	21,741
	Total available-for-sale investment securities	$	1,514,275		$	2,084		$	(3,687	)	$	1,512,672
	The amortized cost, gross unrealized gains and losses and fair value of available-for-sale investment securities at December 31, 2013 were as follows:
		Amortized			Unrealized			Unrealized			Fair
		Cost			Gains			Losses			Value
	U.S. Treasury and agency debt securities	$	506,094		$	544		$	(353	)	$	506,285
	Corporate and other debt securities	300,994			1,090			(243		)	301,841
	Certificates of deposit and commercial paper	99,897			62			—			99,959
	Asset-backed securities	160,559			99			(391		)	160,267
	Municipal debt securities	114,888			348			(40		)	115,196
	Mutual funds	22,705			280			(1,849		)	21,136
	Total available-for-sale investment securities	$	1,205,137		$	2,423		$	(2,876	)	$	1,204,684
	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 September 30, 2014:
		Less than 12 Months						12 Months or More						Total
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
		Value			Losses			Value			Losses			Value		Losses
	U.S. Treasury and agency debt securities	$	267,403		$	(487	)	$	—		$	—		$	267,403	$	(487	)
	Corporate and other debt securities	237,753			(654		)	—			—			237,753		(654		)
	Asset-backed securities	140,490			(256		)	11,320			(132		)	151,810		(388		)
	Municipal debt securities	14,319			(12		)	—			—			14,319		(12		)
	Mutual funds	—			—			20,607			(2,146		)	20,607		(2,146		)
	Total	$	659,965		$	(1,409	)	$	31,927		$	(2,278	)	$	691,892	$	(3,687	)
	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, 2013:
		Less than 12 Months						12 Months or More						Total
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
		Value			Losses			Value			Losses			Value		Losses
	U.S. Treasury and agency debt securities	$	221,548		$	(353	)	$	—		$	—		$	221,548	$	(353	)
	Corporate and other debt securities	106,485			(243		)	—			—			106,485		(243		)
	Asset-backed securities	84,051			(333		)	5,048			(58		)	89,099		(391		)
	Municipal debt securities	10,702			(34		)	1,019			(6		)	11,721		(40		)
	Mutual funds	—			—			20,183			(1,849		)	20,183		(1,849		)
	Total	$	422,786		$	(963	)	$	26,250		$	(1,913	)	$	449,036	$	(2,876	)
	The unrealized losses for the above securities as of September 30, 2014 and December 31, 2013 are primarily attributable to changes in interest rates. As of September 30, 2014, we do not consider any of the investments to be other-than-temporarily impaired. The gross unrealized gains and losses in the above tables were recorded, net of tax, in accumulated other comprehensive income (loss).
	The contractual maturities of our fixed income available-for-sale investment securities as of September 30, 2014 are set forth in the following table:
		Amortized			Fair
		Cost			Value
	Due within one year	$	188,349		$	188,543
	Due after one year up to two years	526,575			527,250
	Due after two years up to three years	519,035			518,719
	Due after three years up to four years	28,428			28,400
Asset-backed securities	228,298			228,019
Fixed income available-for-sale investment securities	$	1,490,685		$	1,490,931
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						Nine Months Ended
	September 30,						September 30,
	2014			2013			2014			2013
Proceeds from sales of available-for-sale investment securities	$	670,498		$	211,696		$	1,028,320		$	871,696
Gross gains	$	604		$	315		$	1,357		$	1,530
Gross losses	(68		)	(166		)	(134		)	(553		)
Net realized gains on sales of available-for-sale investment securities	$	536		$	149		$	1,223		$	977

Accrued_Expenses_And_Other_Cur

Accrued Expenses And Other Current Liabilities	9 Months Ended
	Sep. 30, 2014
Payables and Accruals [Abstract]	'
Accrued Expenses And Other Current Liabilities	'
	Accrued Expenses and Other Current Liabilities
	Accrued expenses and other current liabilities were as follows:
		30-Sep-14		31-Dec-13
	Compensation and benefits	$	837,271	$	894,986
	Income taxes	15,123		24,312
	Professional fees	65,033		45,453
	Travel and entertainment	40,569		29,645
	Customer volume incentives	220,911		170,669
	Derivative financial instruments	105,408		191,584
	Other	157,724		121,572
	Total accrued expenses and other current liabilities	$	1,442,039	$	1,478,221

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	Our Indian subsidiaries, collectively referred to as Cognizant India, are primarily export-oriented and are eligible for certain income tax holiday benefits granted by the government of India for export activities conducted within Special Economic Zones, or SEZs, for periods of up to 15 years. Our Indian operations outside of SEZs are subject to corporate income tax at the current rate of 33.99%. In addition, all Indian profits, including those generated within SEZs, are subject to the Minimum Alternative Tax, or MAT, at the current rate of approximately 20.9%, including surcharges. Any MAT paid is creditable against future Indian corporate income tax, subject to limitations.
	Our effective income tax rates were as follows:
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2014		2013		2014		2013
	Effective income tax rate	23.3	%	27.2	%	25.2	%	26.9	%
	For the 2014 and 2013 periods, the principal difference between our effective income tax rates and the U.S. federal statutory rate is the effect of the Indian tax holiday and earnings taxed in countries that have lower rates than the United States. In 2014, our effective income tax rate decreased primarily due to changes in the geographic mix of our estimated current year earnings towards countries with lower statutory rates and discrete tax benefits recorded in 2014, partially offset by a scheduled reduction of certain income tax holiday benefits in India in 2014.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	We measure our cash equivalents, investments 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 September 30, 2014:
		Level 1		Level 2			Level 3		Total
	Cash equivalents:
	Money market funds	$	1,141,034	$	—		$	—	$	1,141,034
	Time deposits	—		50,054			—		50,054
	Total cash equivalents	1,141,034		50,054			—		1,191,088
	Short-term investments:
	Time deposits	—		488,188			—		488,188
	Available-for-sale investment securities:
	U.S. Treasury and agency debt securities	527,186		151,607			—		678,793
	Corporate and other debt securities			400,634			—		400,634
	Certificates of deposit and commercial paper	—		68,971			—		68,971
	Asset-backed securities			228,019			—		228,019
	Municipal debt securities			114,514			—		114,514
	Mutual funds	—		21,741			—		21,741
	Total available-for-sale investment securities	527,186		985,486			—		1,512,672
	Total short-term investments	527,186		1,473,674			—		2,000,860
	Derivative financial instruments - foreign exchange forward contracts:
	Other current assets	—		2,717			—		2,717
	Accrued expenses and other current liabilities	—		(105,408		)	—		(105,408		)
	Other noncurrent assets	—		234			—		234
	Other noncurrent liabilities	—		(33,330		)	—		(33,330		)
	Total	$	1,668,220	$	1,387,941		$	—	$	3,056,161
	The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of December 31, 2013:
		Level 1		Level 2			Level 3		Total
	Cash equivalents:
	Money market funds	$	694,416	$	—		$	—	$	694,416
	Time deposits	—		128,654			—		128,654
	Commercial paper	—		22,000			—		22,000
	Total cash equivalents	694,416		150,654			—		845,070
	Short-term investments:
	Time deposits	—		329,783			—		329,783
	Available-for-sale investment securities:
	U.S. Treasury and agency debt securities	423,051		83,234			—		506,285
	Corporate and other debt securities	—		301,841			—		301,841
	Certificates of deposit and commercial paper	—		99,959			—		99,959
	Asset-backed securities	—		160,267			—		160,267
	Municipal debt securities	—		115,196			—		115,196
	Mutual funds	—		21,136			—		21,136
	Total available-for-sale investment securities	423,051		781,633			—		1,204,684
	Total short-term investments	423,051		1,111,416			—		1,534,467
	Derivative financial instruments - foreign exchange forward contracts:
	Other current assets	—		11,105			—		11,105
	Accrued expenses and other current liabilities	—		(191,584		)	—		(191,584		)
	Other noncurrent liabilities	—		(164,490		)	—		(164,490		)
	Total	$	1,117,467	$	917,101		$	—	$	2,034,568
	We measure the fair value of money market funds and U.S. Treasury securities based on quoted prices in active markets for identical assets. The fair value of commercial paper, certificates of deposit, U.S. government agency securities, municipal debt securities, 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 value of the mutual funds invested in fixed income securities is based on the net asset value, or NAV, of the fund, with appropriate consideration of the liquidity and any restrictions on disposition of our investment in the fund.
	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.
	During the nine months ended September 30, 2014 and the year ended December 31, 2013, there were no transfers among Level 1, Level 2, or Level 3 financial assets and liabilities.

Derivative_Financial_Instrumen

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	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 generally 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 global 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 International Swaps and Derivatives Association, or ISDA, master netting arrangements or other similar agreements 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 accompanying unaudited condensed 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 condensed consolidated statement of financial position as of:
					30-Sep-14								31-Dec-13
	Designation of Derivatives		Location on Statement of		Assets				Liabilities				Assets				Liabilities
			Financial Position
	Cash Flow Hedges – Designated as hedging instruments
	Foreign exchange forward contracts		Other current assets		$	1,286			$	—			$	—			$	—
			Other noncurrent assets		234				—				—				—
			Accrued expenses and other current liabilities		—				105,245				—				190,386
			Other noncurrent liabilities		—				33,330				—				164,490
			Total		1,520				138,575				—				354,876
	Other Derivatives – Not designated as hedging instruments
	Foreign exchange forward contracts		Other current assets		1,431				—				11,105				—
			Accrued expenses and other current liabilities		—				163				—				1,198
			Total		1,431				163				11,105				1,198
	Total				$	2,951			$	138,738			$	11,105			$	356,074
	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 2014, 2015, and 2016. Under these contracts, we purchase Indian rupees and sell U.S. dollars. The changes in fair value of these contracts are initially reported in the caption “Accumulated other comprehensive income (loss)” in our consolidated statements of financial position and are subsequently reclassified to earnings in the same period the hedge contract matures. As of September 30, 2014, we estimate that $87,880, net of tax, of the net losses related to derivatives designated as cash flow hedges recorded in accumulated other comprehensive income (loss) 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 (loss) included in accumulated other comprehensive income (loss) for such contracts were as follows as of:
		30-Sep-14				31-Dec-13
	2014	$	300,000			$	1,200,000
	2015	1,200,000				900,000
	2016	240,000				240,000
	Total notional value of contracts outstanding	$	1,740,000			$	2,340,000
	Net unrealized (loss) included in accumulated other comprehensive income (loss), net of taxes	$	(115,858	)		$	(299,993	)
	Upon settlement or maturity of the cash flow hedge contracts, we record the related gain or loss, based on our designation at the commencement of the contract, with the hedged Indian rupee denominated expense reported within cost of revenues and selling, general and administrative expenses. Hedge ineffectiveness was immaterial for all periods presented.
	The following table provides information on the location and amounts of pre-tax (losses) on our cash flow hedges for the three months ended September 30:
		(Increase) Decrease in								Location of Net Derivative		Net (Loss) Reclassified
		Derivative								(Losses) Reclassified		from Accumulated Other
		Losses Recognized								from Accumulated Other		Comprehensive Income (Loss)
		in Accumulated Other								Comprehensive Income (Loss)		into Income
		Comprehensive Income (Loss)								into Income		(effective portion)
		(effective portion)								(effective portion)
		2014				2013						2014				2013
	Cash Flow Hedges – Designated as hedging instruments
	Foreign exchange forward contracts	$	(5,355	)		$	(149,916	)		Cost of revenues		$	(25,601	)		$	(48,755	)
										Selling, general and administrative expenses		(5,263		)		(9,995		)
										Total		$	(30,864	)		$	(58,750	)
	The following table provides information on the location and amounts of pre-tax (losses) on our cash flow hedges for the nine months ended September 30:
		(Increase) Decrease in								Location of Net Derivative		Net (Loss) Reclassified
		Derivative								(Losses) Reclassified		from Accumulated Other
		Losses Recognized								from Accumulated Other		Comprehensive Income (Loss)
		in Accumulated Other								Comprehensive Income (Loss)		into Income
		Comprehensive Income (Loss)								into Income		(effective portion)
		(effective portion)								(effective portion)
		2014				2013						2014				2013
	Cash Flow Hedges – Designated as hedging instruments
	Foreign exchange forward contracts	$	115,625			$	(278,285	)		Cost of revenues		$	(84,717	)		$	(91,848	)
										Selling, general and administrative expenses		(17,479		)		(19,357		)
										Total		$	(102,196	)		$	(111,205	)
	The activity related to the change in net unrealized (losses) on our cash flow hedges included in accumulated other comprehensive income (loss) is presented in Note 8.
	Other Derivatives
	We use foreign exchange forward contracts, which have not been designated as hedges, to hedge balance sheet exposure to certain monetary assets and liabilities denominated in currencies other than the functional currency of our foreign subsidiaries. We entered into foreign exchange forward contracts to purchase U.S. dollars and sell Indian rupees, Euros and British pounds. Contracts outstanding as of September 30, 2014 are scheduled to mature in 2014 and 2015. 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 condensed consolidated statements of operations.
	Additional information related to our outstanding contracts is as follows:
		30-Sep-14								31-Dec-13
		Notional				Market Value				Notional				Market Value
	Contracts to purchase U.S. dollars and sell:
	Indian rupees	$	160,008			$	780			$	171,802			$	11,105
	Euros	14,800				266				55,500				(412		)
	British pounds	27,000				222				52,000				(786		)
	Total	$	201,808			$	1,268			$	279,302			$	9,907
	The following table provides information on the location and amounts of realized and unrealized pre-tax gains and losses on our other derivative financial instruments for the three and nine months ended September 30, 2014 and 2013:
	Location of Net Gains  (Losses) on		Amount of Net Gains (Losses) on Derivative Instruments
	Derivative Instruments
			Three Months Ended								Nine Months Ended
			September 30,								September 30,
			2014				2013				2014				2013
Other Derivatives – Not designated as hedging instruments	Foreign currency exchange gains (losses), net
Foreign exchange forward contracts:			$	5,856			$	7,126			$	(6,760	)		$	22,096
The related cash flow impacts of all of our derivative activities are reflected as cash flows from operating activities.

Commitments_And_Contingencies

Commitments And Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments And Contingencies	'
	Commitments and Contingencies
	In September 2014, we announced a definitive agreement to acquire TZ US Parent, Inc. ("TriZetto"), a private U.S. healthcare information technology company for $2,700,000 in cash, subject to customary adjustments. The transaction is expected to close in the fourth quarter of 2014. We intend to finance the acquisition through a combination of cash on hand and debt, and have obtained $1,000,000 of committed financing ("Bridge Financing") in support of this transaction (see Note 10 - Debt).
	As of September 30, 2014, we had outstanding fixed capital commitments of approximately $33,985 related to our India development center expansion program to build new state-of-the-art IT development and delivery centers.
	We are involved in various claims and legal actions arising in the ordinary course of business. We accrue a liability when a loss is considered probable and the amount can be reasonably estimated. In the opinion of management, the outcome of any existing claims and legal or regulatory proceedings, if decided adversely, is not expected to have a material adverse effect on our business, financial condition, results of operations and cash flows. Additionally, 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 clients, 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 condition and cash flows.
	In the normal course of business and in conjunction with certain client engagements, we have entered into contractual arrangements through which we may be obligated to indemnify clients or other parties with whom we conduct business with respect to certain matters. These arrangements can include provisions whereby we agree to hold the indemnified party and certain of their affiliated entities harmless with respect to third-party claims related to such matters as our breach of certain representations or covenants, or out of our intellectual property infringement, our gross negligence or willful misconduct or certain other claims made against certain parties. Payments by us under any of these arrangements are generally conditioned on the client making a claim and providing us with full control over the defense and settlement of such claim. It is not possible to determine the maximum potential amount under these indemnification agreements due to the unique facts and circumstances involved in each particular agreement. Historically, we have not made payments under these indemnification agreements and therefore they have not had any impact on our operating results, financial position, or cash flows. However, if events arise requiring us to make payment for indemnification claims under our indemnification obligations in contracts we have entered, such payments could have material impact on our business, results of operations, financial condition and cash flows.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Accumulated Other Comprehensive Income	'
	Accumulated Other Comprehensive Income (Loss)
	Changes in accumulated other comprehensive income (loss) by component were as follows for the three and nine months ended September 30, 2014:
		Three Months									Nine Months
		Before Tax			Tax			Net of Tax			Before Tax			Tax			Net of Tax
		Amount			Effect			Amount			Amount			Effect			Amount
	Foreign currency translation adjustments:
	Beginning balance	$	25,169		$	—		$	25,169		$	24,033		$	—		$	24,033
	Change in foreign currency translation adjustments	(31,962		)	—			(31,962		)	(30,826		)	—			(30,826		)
	Ending balance	$	(6,793	)	$	—		$	(6,793	)	$	(6,793	)	$	—		$	(6,793	)
	Unrealized gains (losses) on available-for-sale investment securities:
	Beginning balance	$	1,269		$	(475	)	$	794		$	(453	)	$	154		$	(299	)
	Net unrealized (losses) gains arising during the period	(2,327		)	867			(1,460		)	54			(6		)	48
	Reclassification of net (gains) to Other, net	(545		)	204			(341		)	(1,204		)	448			(756		)
	Net change	(2,872		)	1,071			(1,801		)	(1,150		)	442			(708		)
	Ending balance	$	(1,603	)	$	596		$	(1,007	)	$	(1,603	)	$	596		$	(1,007	)
	Unrealized gains (losses) on cash flow hedges:
	Beginning balance	$	(162,564	)	$	25,141		$	(137,423	)	$	(354,876	)	$	54,883		$	(299,993	)
	Net unrealized (losses) gains arising during the period	(5,355		)	830			(4,525		)	115,625			(17,881		)	97,744
	Reclassifications of losses to:
	Cost of revenues	25,601			(3,959		)	21,642			84,717			(13,101		)	71,616
	Selling, general and administrative expenses	5,263			(815		)	4,448			17,479			(2,704		)	14,775
	Net change	25,509			(3,944		)	21,565			217,821			(33,686		)	184,135
	Ending balance	$	(137,055	)	$	21,197		$	(115,858	)	$	(137,055	)	$	21,197		$	(115,858	)
	Accumulated other comprehensive income (loss):
	Beginning balance	$	(136,126	)	$	24,666		$	(111,460	)	$	(331,296	)	$	55,037		$	(276,259	)
	Other comprehensive income (loss)	(9,325		)	(2,873		)	(12,198		)	185,845			(33,244		)	152,601
	Ending balance	$	(145,451	)	$	21,793		$	(123,658	)	$	(145,451	)	$	21,793		$	(123,658	)
	Changes in accumulated other comprehensive income (loss) by component were as follows for the three and nine months ended September 30, 2013:
		Three Months									Nine Months
		Before Tax			Tax			Net of Tax			Before Tax			Tax			Net of Tax
		Amount			Effect			Amount			Amount			Effect			Amount
	Foreign currency translation adjustments:
	Beginning balance	$	(8,591	)	$	—		$	(8,591	)	$	11,572		$	—		$	11,572
	Change in foreign currency translation adjustments	25,346			—			25,346			5,183			—			5,183
	Ending balance	$	16,755		$	—		$	16,755		$	16,755		$	—		$	16,755
	Unrealized gains (losses) on available-for-sale investment securities:
	Beginning balance	$	(1,717	)	$	605		$	(1,112	)	$	2,440		$	(885	)	$	1,555
	Net unrealized gains (losses) arising during the period	2,080			(757		)	1,323			(1,396		)	488			(908		)
	Reclassification of net (gains) to Other, net	(144		)	55			(89		)	(825		)	300			(525		)
	Net change	1,936			(702		)	1,234			(2,221		)	788			(1,433		)
	Ending balance	$	219		$	(97	)	$	122		$	219		$	(97	)	$	122
	Unrealized (losses) on cash flow hedges:
	Beginning balance	$	(372,509	)	$	57,610		$	(314,899	)	$	(296,595	)	$	43,785		$	(252,810	)
	Unrealized (losses) arising during the period	(149,916		)	23,185			(126,731		)	(278,285		)	45,064			(233,221		)
	Reclassifications of losses to:
	Cost of revenues	48,755			(7,540		)	41,215			91,848			(14,158		)	77,690
	Selling, general and administrative expenses	9,995			(1,546		)	8,449			19,357			(2,982		)	16,375
	Net change	(91,166		)	14,099			(77,067		)	(167,080		)	27,924			(139,156		)
	Ending balance	$	(463,675	)	$	71,709		$	(391,966	)	$	(463,675	)	$	71,709		$	(391,966	)
	Accumulated other comprehensive income (loss):
	Beginning balance	$	(382,817	)	$	58,215		$	(324,602	)	$	(282,583	)	$	42,900		$	(239,683	)
	Other comprehensive income (loss)	(63,884		)	13,397			(50,487		)	(164,118		)	28,712			(135,406		)
	Ending balance	$	(446,701	)	$	71,612		$	(375,089	)	$	(446,701	)	$	71,612		$	(375,089	)

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information
	Our reportable segments are: Financial Services, which includes customers providing banking/transaction processing, capital markets and insurance services; Healthcare, which includes healthcare providers and payers as well as life sciences customers; Manufacturing/Retail/Logistics, which includes consumer goods, manufacturers, retailers, travel and other hospitality customers, as well as customers providing logistics services; and Other, which is an aggregation of industry segments each of which, individually, represents less than 10% of consolidated revenues and segment operating profit. The Other reportable segment includes our information, media and entertainment services, communications and high technology operating segments. 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 revenue and operating expenses to differing degrees. Expenses included in segment operating profit consist principally of direct selling and delivery costs as well as a per seat charge for use of the development and delivery centers. Certain selling, general and administrative expenses, excess or shortfall of incentive compensation for delivery personnel as compared to target, stock-based compensation expense, 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” and adjusted only against our total income from operations. Additionally, management has determined that it is not practical to allocate identifiable assets by segment, since such assets are used interchangeably among the segments.
	Revenues from external customers and segment operating profit, before unallocated expenses, for the Financial Services, Healthcare, Manufacturing/Retail/Logistics, and Other reportable segments were as follows:
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2014		2013		2014		2013
	Revenues:
	Financial Services	$	1,082,245	$	954,379	$	3,164,467	$	2,720,427
	Healthcare	655,415		599,947		1,916,770		1,651,540
	Manufacturing/Retail/Logistics	533,048		490,622		1,559,288		1,378,062
	Other	310,301		260,775		879,926		737,672
	Total revenue	$	2,581,009	$	2,305,723	$	7,520,451	$	6,487,701
	Segment Operating Profit:
	Financial Services	$	318,022	$	324,450	$	1,019,986	$	895,079
	Healthcare	200,804		230,145		642,399		612,210
	Manufacturing/Retail/Logistics	168,686		177,075		527,786		466,485
	Other	96,762		86,959		290,451		238,611
	Total segment operating profit	784,274		818,629		2,480,622		2,212,385
	Less: unallocated costs(1)	326,761		381,270		1,075,152		982,316
	Income from operations	$	457,513	$	437,359	$	1,405,470	$	1,230,069
	_____________________
	-1	Includes $31,271 and $27,023 of stock-based compensation expense for the three months ended September 30, 2014 and 2013, respectively, and $100,622 and $86,353 of stock-based compensation expense for the nine months ended September 30, 2014 and 2013, respectively. In addition, the unallocated costs for the three and nine months ended September 30, 2014 include the benefit of accruing incentive-based compensation at lower accrual rates than the comparable 2013 periods.
	Geographic Area Information
	Revenue and long-lived assets, by geographic area, are as follows:
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2014		2013		2014		2013
	Revenues: (1)
	North America(2)	$	1,981,229	$	1,783,081	$	5,746,012	$	5,042,666
	Europe(3)	472,114		414,656		1,408,508		1,150,140
	Rest of World (4)	127,666		107,986		365,931		294,895
	Total	$	2,581,009	$	2,305,723	$	7,520,451	$	6,487,701
		As of
		September 30,		December 31,
		2014		2013
	Long-lived Assets: (5)
	North America(2)	$	50,781	$	48,352
	Europe	24,586		22,707
	Rest of World (4)(6)	1,026,101		1,010,105
	Total	$	1,101,468	$	1,081,164
	________________
	-1	Revenues are attributed to regions based upon customer location.
	-2	Substantially all relates to operations in the United States.
	-3	Includes revenue from operations in the United Kingdom of $276,996 and $246,397 for the three months ended September 30, 2014 and 2013, respectively, and $820,531 and $696,650 for the nine months ended September 30, 2014 and 2013, respectively.
	-4	Includes our operations in Asia Pacific, the Middle East and Latin America.
	-5	Long-lived assets include property and equipment, net of accumulated depreciation and amortization.
	-6	Substantially all of these long-lived assets relate to our operations in India.

Debt

Debt	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Debt	'
	Debt
	On September 14, 2014, we obtained committed bridge financing from Credit Suisse AG, Cayman Islands Branch, Credit Suisse Securities (USA) LLC, JPMorgan Chase Bank, N.A., J.P. Morgan Securities LLC and Barclays Bank PLC. The commitments in respect of the unsecured bridge facility (the “Bridge Facility”) allow us to borrow up to $1,000,000 to finance our acquisition of TriZetto (see Note 7 - Commitments and Contingencies) and to pay fees and expenses in connection therewith. We paid an initial commitment fee of $1,500, which was capitalized as deferred financing fees and recorded in other current assets on our condensed consolidated statement of financial position. The Bridge Facility requires us to pay a ticking fee of 0.075% per annum of the daily undrawn balance of the facility beginning on October 29, 2014. The commitments in respect of the Bridge Facility will expire upon the earliest to occur of (1) December 31, 2014, (2) the closing of the TriZetto acquisition without the use of the Bridge Facility, and (3) the termination of the purchase agreement governing the TriZetto acquisition in accordance with its terms. If we elect to fund the Bridge Facility we will enter into a bridge facility credit agreement (the “Bridge Facility Credit Agreement”) concurrent with the closing of the TriZetto acquisition. The Bridge Facility Credit Agreement will provide that (i) the Bridge Facility matures 364 days after the closing of the TriZetto acquisition and (ii) interest will be payable at the three-month LIBOR rate, plus a base margin. We expect the base margin will initially be 0.875% and will increase by 0.25% at the end of each 90 day period thereafter. The Bridge Facility Credit Agreement will provide for certain affirmative and negative covenants that are usual and customary for facilities and transactions of this type and will include a minimum consolidated interest coverage ratio covenant of at least 3.50:1.

Interim_Condensed_Consolidated1

Interim Condensed Consolidated Financial Statements (Policies)	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Recently Adopted Accounting Pronouncements	'
	Recently Adopted Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board, or FASB, issued a standard on revenue from contracts with customers. The new standard sets forth a single comprehensive model for recognizing and reporting revenue. The standard also requires additional financial statement disclosures that will enable users to understand the nature, amount, timing and uncertainty of revenue and cash flows relating to customer contracts. The new standard will be effective for periods beginning on or after January 1, 2017. Early adoption is not permitted. The standard allows for two methods of adoption: the full retrospective adoption, which requires the standard to be applied to each prior period presented, or the modified retrospective adoption, which requires the cumulative effect of adoption to be recognized as an adjustment to opening retained earnings in the period of adoption. We are currently evaluating the effect the new standard will have on our consolidated financial statements and related disclosures.
	In July 2013, the FASB issued new guidance which requires the netting of any unrecognized tax benefits against all available same-jurisdiction deferred income tax carryforward assets that would apply if the uncertain tax positions were settled. We adopted this standard on January 1, 2014. As of September 30, 2014, we netted an unrecognized tax benefit of $81,161 against same-jurisdiction non-current deferred income tax assets. In our December 31, 2013 consolidated statement of financial position, we reclassified $74,196 from "other non-current liabilities" to non-current "deferred income tax assets, net" to conform to current period's presentation. The adoption of this standard had no effect on our condensed consolidated results of operations or stockholder's equity.

Shortterm_Investments_Tables

Short-term Investments (Tables)	9 Months Ended
	Sep. 30, 2014
Investments [Abstract]	'
Short-term investments	'
	Our short-term investments were as follows:
		30-Sep-14			31-Dec-13
	Available-for-sale investment securities:
	U.S. Treasury and agency debt securities	$	678,793		$	506,285
	Corporate and other debt securities	400,634			301,841
	Certificates of deposit and commercial paper	68,971			99,959
	Asset-backed securities	228,019			160,267
	Municipal debt securities	114,514			115,196
	Mutual funds	21,741			21,136
	Total available-for-sale investment securities	1,512,672			1,204,684
	Time deposits	488,188			329,783
	Total short-term investments	$	2,000,860		$	1,534,467
Amortized Cost, Gross Unrealized Gains And Losses And Fair Value Of Investment Securities Available-For-Sale	'
	The amortized cost, gross unrealized gains and losses and fair value of available-for-sale investment securities at September 30, 2014 were as follows:
		Amortized			Unrealized			Unrealized			Fair
		Cost			Gains			Losses			Value
	U.S. Treasury and agency debt securities	$	678,771		$	509		$	(487	)	$	678,793
	Corporate and other debt securities	400,683			605			(654		)	400,634
	Certificates of deposit and commercial paper	68,915			56			—			68,971
	Asset-backed securities	228,298			109			(388		)	228,019
	Municipal debt securities	114,018			508			(12		)	114,514
	Mutual funds	23,590			297			(2,146		)	21,741
	Total available-for-sale investment securities	$	1,514,275		$	2,084		$	(3,687	)	$	1,512,672
	The amortized cost, gross unrealized gains and losses and fair value of available-for-sale investment securities at December 31, 2013 were as follows:
		Amortized			Unrealized			Unrealized			Fair
		Cost			Gains			Losses			Value
	U.S. Treasury and agency debt securities	$	506,094		$	544		$	(353	)	$	506,285
	Corporate and other debt securities	300,994			1,090			(243		)	301,841
	Certificates of deposit and commercial paper	99,897			62			—			99,959
	Asset-backed securities	160,559			99			(391		)	160,267
	Municipal debt securities	114,888			348			(40		)	115,196
	Mutual funds	22,705			280			(1,849		)	21,136
	Total available-for-sale investment securities	$	1,205,137		$	2,423		$	(2,876	)	$	1,204,684
Available-For-Sale Securities In A Continuous Unrealized Loss Position	'
	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 September 30, 2014:
		Less than 12 Months						12 Months or More						Total
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
		Value			Losses			Value			Losses			Value		Losses
	U.S. Treasury and agency debt securities	$	267,403		$	(487	)	$	—		$	—		$	267,403	$	(487	)
	Corporate and other debt securities	237,753			(654		)	—			—			237,753		(654		)
	Asset-backed securities	140,490			(256		)	11,320			(132		)	151,810		(388		)
	Municipal debt securities	14,319			(12		)	—			—			14,319		(12		)
	Mutual funds	—			—			20,607			(2,146		)	20,607		(2,146		)
	Total	$	659,965		$	(1,409	)	$	31,927		$	(2,278	)	$	691,892	$	(3,687	)
	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, 2013:
		Less than 12 Months						12 Months or More						Total
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
		Value			Losses			Value			Losses			Value		Losses
	U.S. Treasury and agency debt securities	$	221,548		$	(353	)	$	—		$	—		$	221,548	$	(353	)
	Corporate and other debt securities	106,485			(243		)	—			—			106,485		(243		)
	Asset-backed securities	84,051			(333		)	5,048			(58		)	89,099		(391		)
	Municipal debt securities	10,702			(34		)	1,019			(6		)	11,721		(40		)
	Mutual funds	—			—			20,183			(1,849		)	20,183		(1,849		)
	Total	$	422,786		$	(963	)	$	26,250		$	(1,913	)	$	449,036	$	(2,876	)
Contractual Maturities Of Investments In Debt Securities Available-For-Sale	'
	The contractual maturities of our fixed income available-for-sale investment securities as of September 30, 2014 are set forth in the following table:
		Amortized			Fair
		Cost			Value
	Due within one year	$	188,349		$	188,543
	Due after one year up to two years	526,575			527,250
	Due after two years up to three years	519,035			518,719
	Due after three years up to four years	28,428			28,400
	Asset-backed securities	228,298			228,019
	Fixed income available-for-sale investment securities	$	1,490,685		$	1,490,931
Gross Gains (Losses) Realized On Sales, Maturities And Other Securities Transactions Related To Investment Securities	'
	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						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	Proceeds from sales of available-for-sale investment securities	$	670,498		$	211,696		$	1,028,320		$	871,696
	Gross gains	$	604		$	315		$	1,357		$	1,530
	Gross losses	(68		)	(166		)	(134		)	(553		)
	Net realized gains on sales of available-for-sale investment securities	$	536		$	149		$	1,223		$	977

Accrued_Expenses_And_Other_Cur1

Accrued Expenses And Other Current Liabilities (Tables)	9 Months Ended
	Sep. 30, 2014
Payables and Accruals [Abstract]	'
Accrued Expenses And Other Current Liabilities	'
	Accrued expenses and other current liabilities were as follows:
		30-Sep-14		31-Dec-13
	Compensation and benefits	$	837,271	$	894,986
	Income taxes	15,123		24,312
	Professional fees	65,033		45,453
	Travel and entertainment	40,569		29,645
	Customer volume incentives	220,911		170,669
	Derivative financial instruments	105,408		191,584
	Other	157,724		121,572
	Total accrued expenses and other current liabilities	$	1,442,039	$	1,478,221

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Schedule Of Effective Income Tax Rates	'
	Our effective income tax rates were as follows:
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2014		2013		2014		2013
	Effective income tax rate	23.3	%	27.2	%	25.2	%	26.9	%

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Financial Assets And (Liabilities) Measured At Fair Value On A Recurring Basis	'
	The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of September 30, 2014:
		Level 1		Level 2			Level 3		Total
	Cash equivalents:
	Money market funds	$	1,141,034	$	—		$	—	$	1,141,034
	Time deposits	—		50,054			—		50,054
	Total cash equivalents	1,141,034		50,054			—		1,191,088
	Short-term investments:
	Time deposits	—		488,188			—		488,188
	Available-for-sale investment securities:
	U.S. Treasury and agency debt securities	527,186		151,607			—		678,793
	Corporate and other debt securities			400,634			—		400,634
	Certificates of deposit and commercial paper	—		68,971			—		68,971
	Asset-backed securities			228,019			—		228,019
	Municipal debt securities			114,514			—		114,514
	Mutual funds	—		21,741			—		21,741
	Total available-for-sale investment securities	527,186		985,486			—		1,512,672
	Total short-term investments	527,186		1,473,674			—		2,000,860
	Derivative financial instruments - foreign exchange forward contracts:
	Other current assets	—		2,717			—		2,717
	Accrued expenses and other current liabilities	—		(105,408		)	—		(105,408		)
	Other noncurrent assets	—		234			—		234
	Other noncurrent liabilities	—		(33,330		)	—		(33,330		)
	Total	$	1,668,220	$	1,387,941		$	—	$	3,056,161
	The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of December 31, 2013:
		Level 1		Level 2			Level 3		Total
	Cash equivalents:
	Money market funds	$	694,416	$	—		$	—	$	694,416
	Time deposits	—		128,654			—		128,654
	Commercial paper	—		22,000			—		22,000
	Total cash equivalents	694,416		150,654			—		845,070
	Short-term investments:
	Time deposits	—		329,783			—		329,783
	Available-for-sale investment securities:
	U.S. Treasury and agency debt securities	423,051		83,234			—		506,285
	Corporate and other debt securities	—		301,841			—		301,841
	Certificates of deposit and commercial paper	—		99,959			—		99,959
	Asset-backed securities	—		160,267			—		160,267
	Municipal debt securities	—		115,196			—		115,196
	Mutual funds	—		21,136			—		21,136
	Total available-for-sale investment securities	423,051		781,633			—		1,204,684
	Total short-term investments	423,051		1,111,416			—		1,534,467
	Derivative financial instruments - foreign exchange forward contracts:
	Other current assets	—		11,105			—		11,105
	Accrued expenses and other current liabilities	—		(191,584		)	—		(191,584		)
	Other noncurrent liabilities	—		(164,490		)	—		(164,490		)
	Total	$	1,117,467	$	917,101		$	—	$	2,034,568

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
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 condensed consolidated statement of financial position as of:
					30-Sep-14								31-Dec-13
	Designation of Derivatives		Location on Statement of		Assets				Liabilities				Assets				Liabilities
			Financial Position
	Cash Flow Hedges – Designated as hedging instruments
	Foreign exchange forward contracts		Other current assets		$	1,286			$	—			$	—			$	—
			Other noncurrent assets		234				—				—				—
			Accrued expenses and other current liabilities		—				105,245				—				190,386
			Other noncurrent liabilities		—				33,330				—				164,490
			Total		1,520				138,575				—				354,876
	Other Derivatives – Not designated as hedging instruments
	Foreign exchange forward contracts		Other current assets		1,431				—				11,105				—
			Accrued expenses and other current liabilities		—				163				—				1,198
			Total		1,431				163				11,105				1,198
	Total				$	2,951			$	138,738			$	11,105			$	356,074
Net unrealized (loss) included in accumulated other comprehensive income (loss)	'
	The notional value of our outstanding contracts by year of maturity and the net unrealized (loss) included in accumulated other comprehensive income (loss) for such contracts were as follows as of:
		30-Sep-14				31-Dec-13
	2014	$	300,000			$	1,200,000
	2015	1,200,000				900,000
	2016	240,000				240,000
	Total notional value of contracts outstanding	$	1,740,000			$	2,340,000
	Net unrealized (loss) included in accumulated other comprehensive income (loss), net of taxes	$	(115,858	)		$	(299,993	)
Notional value of outstanding contracts by year of maturity	'
	The notional value of our outstanding contracts by year of maturity and the net unrealized (loss) included in accumulated other comprehensive income (loss) for such contracts were as follows as of:
		30-Sep-14				31-Dec-13
	2014	$	300,000			$	1,200,000
	2015	1,200,000				900,000
	2016	240,000				240,000
	Total notional value of contracts outstanding	$	1,740,000			$	2,340,000
	Net unrealized (loss) included in accumulated other comprehensive income (loss), net of taxes	$	(115,858	)		$	(299,993	)
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 (losses) on our cash flow hedges for the nine months ended September 30:
		(Increase) Decrease in								Location of Net Derivative		Net (Loss) Reclassified
		Derivative								(Losses) Reclassified		from Accumulated Other
		Losses Recognized								from Accumulated Other		Comprehensive Income (Loss)
		in Accumulated Other								Comprehensive Income (Loss)		into Income
		Comprehensive Income (Loss)								into Income		(effective portion)
		(effective portion)								(effective portion)
		2014				2013						2014				2013
	Cash Flow Hedges – Designated as hedging instruments
	Foreign exchange forward contracts	$	115,625			$	(278,285	)		Cost of revenues		$	(84,717	)		$	(91,848	)
										Selling, general and administrative expenses		(17,479		)		(19,357		)
										Total		$	(102,196	)		$	(111,205	)
	The following table provides information on the location and amounts of pre-tax (losses) on our cash flow hedges for the three months ended September 30:
		(Increase) Decrease in								Location of Net Derivative		Net (Loss) Reclassified
		Derivative								(Losses) Reclassified		from Accumulated Other
		Losses Recognized								from Accumulated Other		Comprehensive Income (Loss)
		in Accumulated Other								Comprehensive Income (Loss)		into Income
		Comprehensive Income (Loss)								into Income		(effective portion)
		(effective portion)								(effective portion)
		2014				2013						2014				2013
	Cash Flow Hedges – Designated as hedging instruments
	Foreign exchange forward contracts	$	(5,355	)		$	(149,916	)		Cost of revenues		$	(25,601	)		$	(48,755	)
										Selling, general and administrative expenses		(5,263		)		(9,995		)
										Total		$	(30,864	)		$	(58,750	)
Additional Information Related To Outstanding Contracts Not Designated As Hedging Instruments	'
	Additional information related to our outstanding contracts is as follows:
		30-Sep-14								31-Dec-13
		Notional				Market Value				Notional				Market Value
	Contracts to purchase U.S. dollars and sell:
	Indian rupees	$	160,008			$	780			$	171,802			$	11,105
	Euros	14,800				266				55,500				(412		)
	British pounds	27,000				222				52,000				(786		)
	Total	$	201,808			$	1,268			$	279,302			$	9,907
Location And Amounts Of Pre-Tax Gains (Losses) On Derivative Financial Instruments Not Designated As Hedges	'
	The following table provides information on the location and amounts of realized and unrealized pre-tax gains and losses on our other derivative financial instruments for the three and nine months ended September 30, 2014 and 2013:
		Location of Net Gains  (Losses) on		Amount of Net Gains (Losses) on Derivative Instruments
		Derivative Instruments
				Three Months Ended								Nine Months Ended
				September 30,								September 30,
				2014				2013				2014				2013
	Other Derivatives – Not designated as hedging instruments	Foreign currency exchange gains (losses), net
	Foreign exchange forward contracts:			$	5,856			$	7,126			$	(6,760	)		$	22,096

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Schedule Of Accumulated Other Comprehensive Income (Loss)	'
	Changes in accumulated other comprehensive income (loss) by component were as follows for the three and nine months ended September 30, 2014:
		Three Months									Nine Months
		Before Tax			Tax			Net of Tax			Before Tax			Tax			Net of Tax
		Amount			Effect			Amount			Amount			Effect			Amount
	Foreign currency translation adjustments:
	Beginning balance	$	25,169		$	—		$	25,169		$	24,033		$	—		$	24,033
	Change in foreign currency translation adjustments	(31,962		)	—			(31,962		)	(30,826		)	—			(30,826		)
	Ending balance	$	(6,793	)	$	—		$	(6,793	)	$	(6,793	)	$	—		$	(6,793	)
	Unrealized gains (losses) on available-for-sale investment securities:
	Beginning balance	$	1,269		$	(475	)	$	794		$	(453	)	$	154		$	(299	)
	Net unrealized (losses) gains arising during the period	(2,327		)	867			(1,460		)	54			(6		)	48
	Reclassification of net (gains) to Other, net	(545		)	204			(341		)	(1,204		)	448			(756		)
	Net change	(2,872		)	1,071			(1,801		)	(1,150		)	442			(708		)
	Ending balance	$	(1,603	)	$	596		$	(1,007	)	$	(1,603	)	$	596		$	(1,007	)
	Unrealized gains (losses) on cash flow hedges:
	Beginning balance	$	(162,564	)	$	25,141		$	(137,423	)	$	(354,876	)	$	54,883		$	(299,993	)
	Net unrealized (losses) gains arising during the period	(5,355		)	830			(4,525		)	115,625			(17,881		)	97,744
	Reclassifications of losses to:
	Cost of revenues	25,601			(3,959		)	21,642			84,717			(13,101		)	71,616
	Selling, general and administrative expenses	5,263			(815		)	4,448			17,479			(2,704		)	14,775
	Net change	25,509			(3,944		)	21,565			217,821			(33,686		)	184,135
	Ending balance	$	(137,055	)	$	21,197		$	(115,858	)	$	(137,055	)	$	21,197		$	(115,858	)
	Accumulated other comprehensive income (loss):
	Beginning balance	$	(136,126	)	$	24,666		$	(111,460	)	$	(331,296	)	$	55,037		$	(276,259	)
	Other comprehensive income (loss)	(9,325		)	(2,873		)	(12,198		)	185,845			(33,244		)	152,601
	Ending balance	$	(145,451	)	$	21,793		$	(123,658	)	$	(145,451	)	$	21,793		$	(123,658	)
	Changes in accumulated other comprehensive income (loss) by component were as follows for the three and nine months ended September 30, 2013:
		Three Months									Nine Months
		Before Tax			Tax			Net of Tax			Before Tax			Tax			Net of Tax
		Amount			Effect			Amount			Amount			Effect			Amount
	Foreign currency translation adjustments:
	Beginning balance	$	(8,591	)	$	—		$	(8,591	)	$	11,572		$	—		$	11,572
	Change in foreign currency translation adjustments	25,346			—			25,346			5,183			—			5,183
	Ending balance	$	16,755		$	—		$	16,755		$	16,755		$	—		$	16,755
	Unrealized gains (losses) on available-for-sale investment securities:
	Beginning balance	$	(1,717	)	$	605		$	(1,112	)	$	2,440		$	(885	)	$	1,555
	Net unrealized gains (losses) arising during the period	2,080			(757		)	1,323			(1,396		)	488			(908		)
	Reclassification of net (gains) to Other, net	(144		)	55			(89		)	(825		)	300			(525		)
	Net change	1,936			(702		)	1,234			(2,221		)	788			(1,433		)
	Ending balance	$	219		$	(97	)	$	122		$	219		$	(97	)	$	122
	Unrealized (losses) on cash flow hedges:
	Beginning balance	$	(372,509	)	$	57,610		$	(314,899	)	$	(296,595	)	$	43,785		$	(252,810	)
	Unrealized (losses) arising during the period	(149,916		)	23,185			(126,731		)	(278,285		)	45,064			(233,221		)
	Reclassifications of losses to:
	Cost of revenues	48,755			(7,540		)	41,215			91,848			(14,158		)	77,690
	Selling, general and administrative expenses	9,995			(1,546		)	8,449			19,357			(2,982		)	16,375
	Net change	(91,166		)	14,099			(77,067		)	(167,080		)	27,924			(139,156		)
	Ending balance	$	(463,675	)	$	71,709		$	(391,966	)	$	(463,675	)	$	71,709		$	(391,966	)
	Accumulated other comprehensive income (loss):
	Beginning balance	$	(382,817	)	$	58,215		$	(324,602	)	$	(282,583	)	$	42,900		$	(239,683	)
	Other comprehensive income (loss)	(63,884		)	13,397			(50,487		)	(164,118		)	28,712			(135,406		)
	Ending balance	$	(446,701	)	$	71,612		$	(375,089	)	$	(446,701	)	$	71,612		$	(375,089	)

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Revenues From External Customers And Segment Operating Profit	'
	Revenues from external customers and segment operating profit, before unallocated expenses, for the Financial Services, Healthcare, Manufacturing/Retail/Logistics, and Other reportable segments were as follows:
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2014		2013		2014		2013
	Revenues:
	Financial Services	$	1,082,245	$	954,379	$	3,164,467	$	2,720,427
	Healthcare	655,415		599,947		1,916,770		1,651,540
	Manufacturing/Retail/Logistics	533,048		490,622		1,559,288		1,378,062
	Other	310,301		260,775		879,926		737,672
	Total revenue	$	2,581,009	$	2,305,723	$	7,520,451	$	6,487,701
	Segment Operating Profit:
	Financial Services	$	318,022	$	324,450	$	1,019,986	$	895,079
	Healthcare	200,804		230,145		642,399		612,210
	Manufacturing/Retail/Logistics	168,686		177,075		527,786		466,485
	Other	96,762		86,959		290,451		238,611
	Total segment operating profit	784,274		818,629		2,480,622		2,212,385
	Less: unallocated costs(1)	326,761		381,270		1,075,152		982,316
	Income from operations	$	457,513	$	437,359	$	1,405,470	$	1,230,069
	_____________________
	-1	Includes $31,271 and $27,023 of stock-based compensation expense for the three months ended September 30, 2014 and 2013, respectively, and $100,622 and $86,353 of stock-based compensation expense for the nine months ended September 30, 2014 and 2013, respectively. In addition, the unallocated costs for the three and nine months ended September 30, 2014 include the benefit of accruing incentive-based compensation at lower accrual rates than the comparable 2013 periods.
Revenues And Long-Lived Assets By Geographic Area	'
	Revenue and long-lived assets, by geographic area, are as follows:
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2014		2013		2014		2013
	Revenues: (1)
	North America(2)	$	1,981,229	$	1,783,081	$	5,746,012	$	5,042,666
	Europe(3)	472,114		414,656		1,408,508		1,150,140
	Rest of World (4)	127,666		107,986		365,931		294,895
	Total	$	2,581,009	$	2,305,723	$	7,520,451	$	6,487,701
		As of
		September 30,		December 31,
		2014		2013
	Long-lived Assets: (5)
	North America(2)	$	50,781	$	48,352
	Europe	24,586		22,707
	Rest of World (4)(6)	1,026,101		1,010,105
	Total	$	1,101,468	$	1,081,164
	________________
	-1	Revenues are attributed to regions based upon customer location.
	-2	Substantially all relates to operations in the United States.
	-3	Includes revenue from operations in the United Kingdom of $276,996 and $246,397 for the three months ended September 30, 2014 and 2013, respectively, and $820,531 and $696,650 for the nine months ended September 30, 2014 and 2013, respectively.
	-4	Includes our operations in Asia Pacific, the Middle East and Latin America.
	-5	Long-lived assets include property and equipment, net of accumulated depreciation and amortization.
	-6	Substantially all of these long-lived assets relate to our operations in India.

Interim_Condensed_Consolidated2

Interim Condensed Consolidated Financial Statements (Details) (USD $)	Sep. 30, 2014	Aug. 31, 2014	Jun. 30, 2014	Dec. 31, 2013	Feb. 04, 2014	Sep. 30, 2014	Sep. 30, 2014
					Common Class A [Member]	Common Class A [Member]	Stock-based compensation plan [Member]
Equity, Class of Treasury Stock [Line Items]	'	'	'	'	'	'	'
Stock repurchase program, authorized amount	'	$2,000,000,000	$1,500,000,000	'	'	'	'
Stock repurchased during period, shares	'	'	'	'	'	2,700,000	849,465
Stock repurchased during period, value	'	'	'	'	'	130,246,000	41,042,000
Remaining available balance under Board authorization for stock repurchases	'	'	'	'	'	871,899,000	'
Stock split ratio	'	'	'	'	2	'	'
Common stock dividend rate	'	'	'	'	100.00%	'	'
Amount of unrecognized tax benefits netted against deferred tax asset	$81,161,000	'	'	$74,196,000	'	'	'

Shortterm_Investments_Investme

Short-term Investments (Investments) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale investment securities	$1,512,672	$1,204,684
Time deposits	488,188	329,783
Short-term Investments, Total	2,000,860	1,534,467
U.S. Treasury And Agency Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale investment securities	678,793	506,285
Corporate And Other Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale investment securities	400,634	301,841
Certificates of Deposit and Commercial Paper [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale investment securities	68,971	99,959
Asset-Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale investment securities	228,019	160,267
Municipal Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale investment securities	114,514	115,196
Mutual Funds [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale investment securities	$21,741	$21,136

Shortterm_Investments_Amortize

Short-term Investments (Amortized Cost, Gross Unrealized Gains And Losses And Fair Value Of Investment Securities Available-For-Sale) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	$1,514,275	$1,205,137
Unrealized Gains	2,084	2,423
Unrealized Losses	-3,687	-2,876
Fair Value	1,512,672	1,204,684
U.S. Treasury And Agency Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	678,771	506,094
Unrealized Gains	509	544
Unrealized Losses	-487	-353
Fair Value	678,793	506,285
Corporate And Other Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	400,683	300,994
Unrealized Gains	605	1,090
Unrealized Losses	-654	-243
Fair Value	400,634	301,841
Certificates of Deposit and Commercial Paper [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	68,915	99,897
Unrealized Gains	56	62
Unrealized Losses	0	0
Fair Value	68,971	99,959
Asset-Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	228,298	160,559
Unrealized Gains	109	99
Unrealized Losses	-388	-391
Fair Value	228,019	160,267
Municipal Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	114,018	114,888
Unrealized Gains	508	348
Unrealized Losses	-12	-40
Fair Value	114,514	115,196
Mutual Funds [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	23,590	22,705
Unrealized Gains	297	280
Unrealized Losses	-2,146	-1,849
Fair Value	$21,741	$21,136

Shortterm_Investments_Availabl

Short-term Investments (Available-For-Sale Securities In A Continuous Unrealized Loss Position) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair Value available-for-sale securities Less than 12 Months	$659,965	$422,786
Unrealized losses, available-for-sale securities, Less than 12 Months	-1,409	-963
Fair value available-for-sale securities 12 Months or More	31,927	26,250
Unrealized losses, available-for-sale securities, 12 Months or More	-2,278	-1,913
Total Fair Value available-for-sale securities	691,892	449,036
Unrealized losses, available-for-sale securities, Total	-3,687	-2,876
U.S. Treasury And Agency Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair Value available-for-sale securities Less than 12 Months	267,403	221,548
Unrealized losses, available-for-sale securities, Less than 12 Months	-487	-353
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	267,403	221,548
Unrealized losses, available-for-sale securities, Total	-487	-353
Corporate And Other Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair Value available-for-sale securities Less than 12 Months	237,753	106,485
Unrealized losses, available-for-sale securities, Less than 12 Months	-654	-243
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	237,753	106,485
Unrealized losses, available-for-sale securities, Total	-654	-243
Asset-Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair Value available-for-sale securities Less than 12 Months	140,490	84,051
Unrealized losses, available-for-sale securities, Less than 12 Months	-256	-333
Fair value available-for-sale securities 12 Months or More	11,320	5,048
Unrealized losses, available-for-sale securities, 12 Months or More	-132	-58
Total Fair Value available-for-sale securities	151,810	89,099
Unrealized losses, available-for-sale securities, Total	-388	-391
Municipal Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair Value available-for-sale securities Less than 12 Months	14,319	10,702
Unrealized losses, available-for-sale securities, Less than 12 Months	-12	-34
Fair value available-for-sale securities 12 Months or More	0	1,019
Unrealized losses, available-for-sale securities, 12 Months or More	0	-6
Total Fair Value available-for-sale securities	14,319	11,721
Unrealized losses, available-for-sale securities, Total	-12	-40
Mutual Funds [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair Value available-for-sale securities Less than 12 Months	0	0
Unrealized losses, available-for-sale securities, Less than 12 Months	0	0
Fair value available-for-sale securities 12 Months or More	20,607	20,183
Unrealized losses, available-for-sale securities, 12 Months or More	-2,146	-1,849
Total Fair Value available-for-sale securities	20,607	20,183
Unrealized losses, available-for-sale securities, Total	($2,146)	($1,849)

Shortterm_Investments_Contract

Short-term Investments (Contractual Maturities Of Investments In Debt Securities Available-For-Sale) (Details) (USD $)	Sep. 30, 2014
In Thousands, unless otherwise specified
Amortized Cost	'
Due within one year	$188,349
Due after one year up to two years	526,575
Due after two years up to three years	519,035
Due after three years up to four years	28,428
Asset-backed securities	228,298
Amortized Cost	1,490,685
Fair Value	'
Due within one year	188,543
Due after one year up to two years	527,250
Due after two years up to three years	518,719
Due after three years up to four years	28,400
Asset-backed securities	228,019
Fair Value	$1,490,931

Shortterm_Investments_Gross_Ga

Short-term Investments (Gross Gains (Losses) Realized On Sales, Maturities And Other Securities Transactions Related To Investment Securities) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Investments [Abstract]	'	'	'	'
Proceeds from sales of available-for-sale investment securities	$670,498	$211,696	$1,028,320	$871,696
Gross gains	604	315	1,357	1,530
Gross losses	-68	-166	-134	-553
Net gains on sales of available-for-sale investment securities	$536	$149	$1,223	$977

Accrued_Expenses_And_Other_Cur2

Accrued Expenses And Other Current Liabilities (Accrued Expenses And Other Current Liabilities) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]	'	'
Compensation and benefits	$837,271	$894,986
Income taxes	15,123	24,312
Professional fees	65,033	45,453
Travel and entertainment	40,569	29,645
Customer volume incentives	220,911	170,669
Derivative financial instruments	105,408	191,584
Other	157,724	121,572
Total accrued expenses and other current liabilities	$1,442,039	$1,478,221

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details)	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Incentive period for SEZs, years	'15 years
Regular corporate income tax rate in India	33.99%
Current MAT rate	20.90%

Income_Taxes_Schedule_Of_Effec

Income Taxes (Schedule Of Effective Tax Rate) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Effective income tax rate	23.30%	27.20%	25.20%	26.90%

Fair_Value_Measurements_Financ

Fair Value Measurements (Financial Assets And (Liabilities) Measured At Fair Value On A Recurring Basis) (Details) (Recurring [Member], USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	$1,191,088	$845,070
Time deposits	488,188	329,783
Available-for-sale investment securities	1,512,672	1,204,684
Investments	2,000,860	1,534,467
Total	3,056,161	2,034,568
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	678,793	506,285
Corporate And Other Debt Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale investment securities	400,634	301,841
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	68,971	99,959
Asset-Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale investment securities	228,019	160,267
Municipal Debt Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale investment securities	114,514	115,196
Mutual Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale investment securities	21,741	21,136
Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	1,141,034	694,416
Time Deposits [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	50,054	128,654
Commercial Paper [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	'	22,000
Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	1,141,034	694,416
Time deposits	0	'
Available-for-sale investment securities	527,186	423,051
Investments	527,186	423,051
Total	1,668,220	1,117,467
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	527,186	423,051
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	'	'
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
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	'	'
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	'	'
Level 1 [Member] | Mutual Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale investment securities	0	'
Level 1 [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	1,141,034	694,416
Level 1 [Member] | Time Deposits [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	'	'
Level 1 [Member] | Commercial Paper [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	'	'
Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	50,054	150,654
Time deposits	488,188	329,783
Available-for-sale investment securities	985,486	781,633
Investments	1,473,674	1,111,416
Total	1,387,941	917,101
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	151,607	83,234
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	400,634	301,841
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	68,971	99,959
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	228,019	160,267
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	114,514	115,196
Level 2 [Member] | Mutual Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale investment securities	21,741	21,136
Level 2 [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	'	'
Level 2 [Member] | Time Deposits [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	50,054	128,654
Level 2 [Member] | Commercial Paper [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	'	22,000
Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	'	'
Time deposits	0	'
Available-for-sale investment securities	0	'
Investments	0	'
Total	0	'
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	'
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	'
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
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	'
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	'
Level 3 [Member] | Mutual Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale investment securities	0	'
Level 3 [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	'	'
Level 3 [Member] | Time Deposits [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	'	'
Level 3 [Member] | Commercial Paper [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	'	'
Other Current Assets [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, assets	2,717	11,105
Other Current Assets [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, assets	0	'
Other Current Assets [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, assets	2,717	11,105
Other Current Assets [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, assets	0	'
Accrued Expenses And Other Current Liabilities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, liabilities	-105,408	-191,584
Accrued Expenses And Other Current Liabilities [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, liabilities	0	'
Accrued Expenses And Other Current Liabilities [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, liabilities	-105,408	-191,584
Accrued Expenses And Other Current Liabilities [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, liabilities	0	'
Other Noncurrent Assets [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, assets	234	'
Other Noncurrent Assets [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, assets	0	'
Other Noncurrent Assets [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, assets	234	'
Other Noncurrent Assets [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, assets	0	'
Other Noncurrent Liabilities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, liabilities	-33,330	-164,490
Other Noncurrent Liabilities [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, liabilities	0	'
Other Noncurrent Liabilities [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, liabilities	-33,330	-164,490
Other Noncurrent Liabilities [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative financial instruments, liabilities	$0	'

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Narrative) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Cash flow hedge losses expected to be reclassified to earnings within the next 12 months	$87,880
Cash flow hedge ineffectiveness is immaterial	'Hedge ineffectiveness was immaterial for all periods presented.

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Location And Fair Values Of Derivative Financial Instruments In Our Consolidated Statement Of Financial Position) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Derivatives, Fair Value [Line Items]	'	'
Derivative assets fair value	$2,951	$11,105
Derivative liabilities fair value	138,738	356,074
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative assets fair value	1,520	0
Derivative liabilities fair value	138,575	354,876
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	1,286	0
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	234	0
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	105,245	190,386
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	33,330	164,490
Other Derivatives [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative assets fair value	1,431	11,105
Derivative liabilities fair value	163	1,198
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	1,431	11,105
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	$163	$1,198

Derivative_Financial_Instrumen4

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 $)	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012
Derivative [Line Items]	'	'	'	'	'	'
Net unrealized (loss) included in accumulated other comprehensive income (loss), net of taxes	($115,858,000)	($137,423,000)	($299,993,000)	($391,966,000)	($314,899,000)	($252,810,000)
Foreign Exchange Forward [Member]	'	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'	'
Net unrealized (loss) included in accumulated other comprehensive income (loss), net of taxes	-115,858,000	'	-299,993,000	'	'	'
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member]	'	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'	'
Notional value of contracts outstanding	1,740,000,000	'	2,340,000,000	'	'	'
Foreign Exchange Forward, Maturity 2014 [Member] | Cash Flow Hedging [Member]	'	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'	'
Notional value of contracts outstanding	300,000,000	'	1,200,000,000	'	'	'
Foreign Exchange Forward, Maturity 2015 [Member] | Cash Flow Hedging [Member]	'	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'	'
Notional value of contracts outstanding	1,200,000,000	'	900,000,000	'	'	'
Foreign Exchange Forward, Maturity 2016 [Member] | Cash Flow Hedging [Member]	'	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'	'
Notional value of contracts outstanding	$240,000,000	'	$240,000,000	'	'	'

Derivative_Financial_Instrumen5

Derivative Financial Instruments (Location And Amounts Of Pre-Tax Gains (Losses) On Cash Flow Hedge Derivatives Financial Instruments) (Details) (Cash Flow Hedging [Member], USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Net (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	($30,864)	($58,750)	($102,196)	($111,205)
Cost Of Revenues [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Net (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	-25,601	-48,755	-84,717	-91,848
Selling, General and Administrative Expenses [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Net (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	-5,263	-9,995	-17,479	-19,357
Foreign Exchange Forward [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Increase (decrease) in Derivative Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss) (effective portion)	($5,355)	($149,916)	$115,625	($278,285)

Derivative_Financial_Instrumen6

Derivative Financial Instruments (Other Derivatives) (Details) (Foreign Exchange Forward [Member], Not Designated as Hedging Instrument [Member], USD $)	Sep. 30, 2014	Dec. 31, 2013
Derivative [Line Items]	'	'
Notional	$201,808,000	$279,302,000
Market Value	1,268,000	9,907,000
Indian rupees	'	'
Derivative [Line Items]	'	'
Notional	160,008,000	171,802,000
Market Value	780,000	11,105,000
Euros	'	'
Derivative [Line Items]	'	'
Notional	14,800,000	55,500,000
Market Value	266,000	-412,000
British pounds	'	'
Derivative [Line Items]	'	'
Notional	27,000,000	52,000,000
Market Value	$222,000	($786,000)

Derivative_Financial_Instrumen7

Derivative Financial Instruments (Location And Amounts Of Pre-Tax Gains (Losses) On Derivative Financial Instruments Not Designated As Hedges) (Details) (Not Designated as Hedging Instrument [Member], Foreign Exchange Forward [Member], Foreign Currency Exchange Gains (Losses), net [Member], USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
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	$5,856	$7,126	($6,760)	$22,096

Commitments_And_Contingencies_

Commitments And Contingencies (Narrative) (Details) (USD $)	Sep. 30, 2014	Sep. 14, 2014	Dec. 31, 2014
		Bridge Credit Agreement [Member]	TZ US Parent, Inc. [Member]
			Forecast [Member]
Other Commitments [Line Items]	'	'	'
Acquisition of business, cash payment	'	'	$2,700,000,000
Maximum borrowing capacity	'	1,000,000,000	'
Outstanding fixed capital commitments related to our India development center expansion program	$33,985,000	'	'

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) (Schedule Of Changes In Accumulated Other Comprehensive Income (Loss) By Component) (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Cost Of Revenues [Member]

Cost Of Revenues [Member]

Cost Of Revenues [Member]

Cost Of Revenues [Member]

Selling, General and Administrative Expenses [Member]

Selling, General and Administrative Expenses [Member]

Selling, General and Administrative Expenses [Member]

Selling, General and Administrative Expenses [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Currency Translation Adjustment, Before Taxes [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency translation adjustments, beginning balance, before tax

$25,169

($8,591)

$24,033

$11,572

'

'

'

'

'

'

'

'

'

'

Change in foreign currency translation, before tax

-31,962

25,346

-30,826

5,183

'

'

'

'

'

'

'

'

'

'

Foreign currency translation adjustments, ending balance, before tax

-6,793

16,755

-6,793

16,755

'

'

'

'

'

'

'

'

'

'

Foreign Currency Translation Adjustment, Tax [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency translation adjustment, beginning balance, tax

0

0

0

0

'

'

'

'

'

'

'

'

'

'

Change in foreign currency translation, tax

0

0

0

0

'

'

'

'

'

'

'

'

'

'

Foreign currency translation adjustment, ending balance, tax

0

0

0

0

'

'

'

'

'

'

'

'

'

'

Foreign Currency Translation Adjustment, Net of Tax [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency translation adjustments, beginning balance, net of tax

25,169

-8,591

24,033

11,572

'

'

'

'

'

'

'

'

'

'

Change in foreign currency translation, net of tax

-31,962

25,346

-30,826

5,183

'

'

'

'

'

'

'

'

'

'

Foreign currency translation adjustments, ending balance, net of tax

-6,793

16,755

-6,793

16,755

'

'

'

'

'

'

'

'

'

'

Available-for-sale Securities Adjustment, Before Taxes [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrealized gains (losses) on available-for-sale investment securities, beginning balance, before tax

1,269

-1,717

-453

2,440

'

'

'

'

'

'

'

'

'

'

Unrealized (losses) gains arising on available-for-sale investment securities during the period, before tax

-2,327

2,080

54

-1,396

'

'

'

'

'

'

'

'

'

'

Reclassification of (gains) to other, net on available-for-sale investment securities, before tax

-545

-144

-1,204

-825

'

'

'

'

'

'

'

'

'

'

Net change on available-for-sale investment securities, before tax

-2,872

1,936

-1,150

-2,221

'

'

'

'

'

'

'

'

'

'

Unrealized gains (losses) on available-for-sale investment securities, ending balance, before tax

-1,603

219

-1,603

219

'

'

'

'

'

'

'

'

'

'

Available-for-sale Securities Adjustment, Tax [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrealized gains (losses) on available-for-sale investment securities, beginning balance, tax

-475

605

154

-885

'

'

'

'

'

'

'

'

'

'

Unrealized (losses) gains arising on available-for-sale investment securities during the period, tax

867

-757

-6

488

'

'

'

'

'

'

'

'

'

'

Reclassification of (gains) to other, net on available-for-sale investment securities, tax

204

55

448

300

'

'

'

'

'

'

'

'

'

'

Net change on available-for-sale investment securities, tax

1,071

-702

442

788

'

'

'

'

'

'

'

'

'

'

Unrealized gains (losses) on available-for-sale investment securities, ending balance, tax

596

-97

596

-97

'

'

'

'

'

'

'

'

'

'

Available-for-sale Securities Adjustment, Net of Tax [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrealized gains (losses) on available-for-sale investment securities, beginning balance, net of tax

794

-1,112

-299

1,555

'

'

'

'

'

'

'

'

'

'

Unrealized (losses) gains arising on available-for-sale investment securities during the period, net of tax

-1,460

1,323

48

-908

'

'

'

'

'

'

'

'

'

'

Reclassification of (gains) to other, net on available-for-sale investment securities, net of tax

-341

-89

-756

-525

'

'

'

'

'

'

'

'

'

'

Net change on available-for-sale investment securities, net of tax

-1,801

1,234

-708

-1,433

'

'

'

'

'

'

'

'

'

'

Unrealized gains (losses) on available-for-sale investment securities, ending balance, net of tax

-1,007

122

-1,007

122

'

'

'

'

'

'

'

'

'

'

Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Before Taxes [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrealized (losses) on cash flow hedges, beginning balance, before tax

-162,564

-372,509

-354,876

-296,595

'

'

'

'

'

'

'

'

'

'

Unrealized (losses) arising on cash flow hedges during the period, before tax

-5,355

-149,916

115,625

-278,285

'

'

'

'

'

'

'

'

'

'

Reclassifications of losses on cash flow hedges, before tax

'

'

'

'

25,601

48,755

84,717

91,848

5,263

9,995

17,479

19,357

'

'

Net change on cash flow hedges, before tax

25,509

-91,166

217,821

-167,080

'

'

'

'

'

'

'

'

'

'

Unrealized (losses) on cash flow hedges, ending balance, before tax

-137,055

-463,675

-137,055

-463,675

'

'

'

'

'

'

'

'

'

'

Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Tax [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrealized (losses) on cash flow hedges, beginning balance, tax

25,141

57,610

54,883

43,785

'

'

'

'

'

'

'

'

'

'

Unrealized (losses) arising on cash flow hedges during the period, tax

830

23,185

-17,881

45,064

'

'

'

'

'

'

'

'

'

'

Reclassification of losses on cash flow hedges, tax

'

'

'

'

-3,959

-7,540

-13,101

-14,158

-815

-1,546

-2,704

-2,982

'

'

Net change on cash flow hedges, tax

-3,944

14,099

-33,686

27,924

'

'

'

'

'

'

'

'

'

'

Unrealized (losses) on cash flow hedges, ending balance, tax

21,197

71,709

21,197

71,709

'

'

'

'

'

'

'

'

'

'

Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrealized (losses) on cash flow hedges, beginning balance, net of tax

-137,423

-314,899

-299,993

-252,810

'

'

'

'

'

'

'

'

-115,858

-299,993

Unrealized (losses) arising on cash flow hedges during the period, net of tax

-4,525

-126,731

97,744

-233,221

'

'

'

'

'

'

'

'

'

'

Reclassification of losses on cash flow hedges, net of tax

'

'

'

'

21,642

41,215

71,616

77,690

4,448

8,449

14,775

16,375

'

'

Net change on cash flow hedges, net of tax

21,565

-77,067

184,135

-139,156

'

'

'

'

'

'

'

'

'

'

Unrealized (losses) on cash flow hedges, ending balance, net of tax

-115,858

-391,966

-115,858

-391,966

'

'

'

'

'

'

'

'

-115,858

-299,993

Accumulated Other Comprehensive Income (Loss), Before Taxes [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated other comprehensive income (loss), beginning balance, before tax

-136,126

-382,817

-331,296

-282,583

'

'

'

'

'

'

'

'

'

'

Other comprehensive income loss, before tax

-9,325

-63,884

185,845

-164,118

'

'

'

'

'

'

'

'

'

'

Accumulated other comprehensive income (loss), ending balance, before tax

-145,451

-446,701

-145,451

-446,701

'

'

'

'

'

'

'

'

'

'

Accumulated Other Comprehensive Income (Loss), Tax [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated other comprehensive income (loss), beginning balance, tax

24,666

58,215

55,037

42,900

'

'

'

'

'

'

'

'

'

'

Other comprehensive income loss, tax

-2,873

13,397

-33,244

28,712

'

'

'

'

'

'

'

'

'

'

Accumulated other comprehensive income (loss), ending balance, tax

21,793

71,612

21,793

71,612

'

'

'

'

'

'

'

'

'

'

Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated other comprehensive income (loss), beginning balance, net of tax

-111,460

-324,602

-276,259

-239,683

'

'

'

'

'

'

'

'

'

'

Other comprehensive income (loss)

-12,198

-50,487

152,601

-135,406

'

'

'

'

'

'

'

'

'

'

Accumulated other comprehensive income (loss), ending balance, net of tax

($123,658)

($375,089)

($123,658)

($375,089)

'

'

'

'

'

'

'

'

'

'

Segment_Information_Narrative_

Segment Information (Narrative) (Details)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Percentage of consolidated revenues and segment operating profit, less than 10%	10.00%

Segment_Information_Revenues_F

Segment Information (Revenues From External Customers And Segment Operating Profit) (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Segment Reporting Information [Line Items]	'		'		'		'
Revenues	$2,581,009		$2,305,723		$7,520,451		$6,487,701
Income from operations	457,513		437,359		1,405,470		1,230,069
Stock-based compensation expense	'		'		100,622		86,353
Operating Segments [Member]	'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'
Revenues	2,581,009		2,305,723		7,520,451		6,487,701
Income from operations	784,274		818,629		2,480,622		2,212,385
Operating Segments [Member] | Financial Services [Member]	'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'
Revenues	1,082,245		954,379		3,164,467		2,720,427
Income from operations	318,022		324,450		1,019,986		895,079
Operating Segments [Member] | Healthcare [Member]	'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'
Revenues	655,415		599,947		1,916,770		1,651,540
Income from operations	200,804		230,145		642,399		612,210
Operating Segments [Member] | Manufacturing/Retail/Logistics [Member]	'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'
Revenues	533,048		490,622		1,559,288		1,378,062
Income from operations	168,686		177,075		527,786		466,485
Operating Segments [Member] | Other Business Segments [Member]	'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'
Revenues	310,301		260,775		879,926		737,672
Income from operations	96,762		86,959		290,451		238,611
Unallocated [Member]	'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'
Less: unallocated costs	326,761	[1]	381,270	[1]	1,075,152	[1]	982,316
Stock-based compensation expense	$31,271		$27,023		$100,622		$86,353
[1]	Includes $31,271 and $27,023 of stock-based compensation expense for the three months ended September 30, 2014 and 2013, respectively, and $100,622 and $86,353 of stock-based compensation expense for the nine months ended September 30, 2014 and 2013, respectively. In addition, the unallocated costs for the three and nine months ended September 30, 2014 include the benefit of accruing incentive-based compensation at lower accrual rates than the comparable 2013 periods.

Segment_Information_Revenues_A

Segment Information (Revenues And Long-Lived Assets By Geographic Area) (Details) (USD $)	3 Months Ended			9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013	Dec. 31, 2013
Geographic Areas, Revenues	'		'	'		'	'
Revenues	$2,581,009		$2,305,723	$7,520,451		$6,487,701	'
Geographic Areas, Long-Lived Assets	'		'	'		'	'
Long-lived Assets	1,101,468	[1]	'	1,101,468	[1]	'	1,081,164	[1]
North America [Member]	'		'	'		'	'
Geographic Areas, Revenues	'		'	'		'	'
Revenues	1,981,229		1,783,081	5,746,012		5,042,666	'
Geographic Areas, Long-Lived Assets	'		'	'		'	'
Long-lived Assets	50,781	[1],[2]	'	50,781	[1],[2]	'	48,352	[1],[2]
Europe [Member]	'		'	'		'	'
Geographic Areas, Revenues	'		'	'		'	'
Revenues	472,114		414,656	1,408,508		1,150,140	'
Geographic Areas, Long-Lived Assets	'		'	'		'	'
Long-lived Assets	24,586	[1]	'	24,586	[1]	'	22,707	[1]
United Kingdom [Member]	'		'	'		'	'
Geographic Areas, Revenues	'		'	'		'	'
Revenues	276,996		246,397	820,531		696,650	'
Rest of World [Member]	'		'	'		'	'
Geographic Areas, Revenues	'		'	'		'	'
Revenues	127,666		107,986	365,931		294,895	'
Geographic Areas, Long-Lived Assets	'		'	'		'	'
Long-lived Assets	$1,026,101	[1],[3],[4]	'	$1,026,101	[1],[3],[4]	'	$1,010,105	[1],[3],[4]
[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]	Substantially all of these long-lived assets relate to our operations in India.
[4]	Includes our operations in Asia Pacific, the Middle East and Latin America.

Debt_Details

Debt (Details) (Bridge Credit Agreement [Member], USD $)	9 Months Ended		9 Months Ended	0 Months Ended
	Sep. 30, 2014	Sep. 14, 2014	Sep. 30, 2014	Nov. 06, 2014
			LIBOR [Member]	Subsequent Event [Member]
Short-term Debt [Line Items]	'	'	'	'
Maximum borrowing capacity	'	$1,000,000,000	'	'
Initial commitment fee	'	$1,500,000	'	'
Ticking fee on daily undrawn balance, percent	'	'	'	0.08%
Term of agreement, days after closing of TriZetto acquisition	'364 days	'	'	'
Basis spread on variable rate	'	'	0.88%	'
Basis spread on variable rate, increase per quarter	'	'	0.25%	'
Minimum consolidated interest coverage ratio required under covenant	3.5	'	'	'