Genpact Limited (G) 10-Q8 May 152015 Q1 Quarterly reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
Document and Entity Information	Mar. 31, 2015	Apr. 30, 2015
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	G
Entity Registrant Name	GENPACT LTD
Entity Central Index Key	1398659
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		218,798,779

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$434,310	$461,788
Accounts receivable, net	529,618	525,754
Deferred tax assets	35,958	45,486
Prepaid expenses and other current assets	180,918	155,480
Total current assets	1,180,804	1,188,508
Property, plant and equipment, net	173,576	175,936
Deferred tax assets	59,125	59,135
Investment in equity affiliates	3,050	494
Intangible assets, net	117,286	114,544
Goodwill	1,052,498	1,057,214
Other assets	149,930	146,706
Total assets	2,736,269	2,742,537
Current liabilities
Short-term borrowings	135,000	135,000
Current portion of long-term debt	4,287	4,288
Current portion of capital lease obligations	1,423	1,443
Accounts payable	20,416	15,544
Income taxes payable	25,671	13,586
Deferred tax liabilities	1,395	1,239
Accrued expenses and other current liabilities	376,527	451,014
Total current liabilities	564,719	622,114
Long-term debt, less current portion	648,235	649,314
Capital lease obligations, less current portion	2,555	2,660
Deferred tax liabilities	5,973	6,671
Other liabilities	176,262	176,642
Total liabilities	1,397,744	1,457,401
Shareholders' equity
Preferred shares, $0.01 par value, 250,000,000 authorized, none issued
Common shares, $0.01 par value, 500,000,000 authorized, 218,684,205 and 219,697,679 issued and outstanding as of December 31, 2014 and March 31, 2015, respectively	2,194	2,184
Additional paid-in capital	1,307,820	1,296,730
Retained earnings	430,055	398,706
Accumulated other comprehensive income (loss)	-401,544	-412,484
Genpact Limited shareholders' equity	1,338,525	1,285,136
Noncontrolling interest	0	0
Total equity	1,338,525	1,285,136
Commitments and contingencies
Total liabilities and equity	$2,736,269	$2,742,537

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Preferred shares, par value	$0.01	$0.01
Preferred shares, authorized	250,000,000	250,000,000
Preferred shares, issued	0	0
Common shares, par value	$0.01	$0.01
Common shares, authorized	500,000,000	500,000,000
Common shares, issued	219,697,679	218,684,205
Common shares, outstanding	219,697,679	218,684,205

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Net revenues
Net revenues from services	$587,153	$528,190
Cost of revenue
Services	357,476	324,289
Gross profit	229,677	203,901
Operating expenses:
Selling, general and administrative expenses	148,748	122,498
Amortization of acquired intangible assets	7,341	6,018
Other operating (income) expense, net	-462	-1,862
Income from operations	74,050	77,247
Foreign exchange (gains) losses, net	7,545	3,593
Other income (expense), net	-8,567	-6,533
Income before equity-method investment activity, net and income tax expense	57,938	67,121
Loss(gain) on equity-method investment activity, net	2,223	-20
Income before income tax expense	55,715	67,141
Income tax expense	11,062	16,288
Net income	44,653	50,853
Net income attributable to noncontrolling interest		240
Net income attributable to Genpact Limited shareholders	44,653	50,613
Net income available to Genpact Limited common shareholders	$44,653	$50,613
Earnings per common share attributable to Genpact Limited common shareholders
Basic	$0.20	$0.22
Diluted	$0.20	$0.21
Weighted average number of common shares used in computing earnings per common share attributable to Genpact Limited common shareholders
Basic	219,892,695	232,093,917
Diluted	222,347,101	237,275,651

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Net income	$44,653	$50,853
Other comprehensive income:
Net income (loss) on cash flow hedging derivatives, net of taxes (Note 7)	21,833	37,992
Other comprehensive income (loss)	10,940	56,660
Non controlling Interest
Net income		240
Other comprehensive income:
Currency translation adjustments		-5
Other comprehensive income (loss)		-5
Comprehensive income (loss)		235
Parent Company
Net income	44,653	50,613
Other comprehensive income:
Currency translation adjustments	-11,179	18,593
Net income (loss) on cash flow hedging derivatives, net of taxes (Note 7)	21,833	37,992
Retirement benefits, net of taxes	286	80
Other comprehensive income (loss)	10,940	56,665
Comprehensive income (loss)	$55,593	$107,278

Consolidated_Statements_of_Equ

Consolidated Statements of Equity (USD $)	Total	Common shares	Additional Paid- in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non controlling Interest
In Thousands, except Share data, unless otherwise specified	Total	Common shares	Additional Paid- in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non controlling Interest
Beginning balance, value at Dec. 31, 2013	$1,324,068	$2,310	$1,268,344	$511,699	($459,614)	$1,329
Beginning balance, value (in shares) at Dec. 31, 2013		231,262,576
Issuance of common shares on exercise of options (Note 15) (in shares)		1,081,905
Issuance of common shares on exercise of options (Note 15)	-599	11	-610
Issuance of common shares under the employee stock purchase plan (Note 15) (in shares)		40,534
Issuance of common shares under the employee stock purchase plan (Note 15)	608		608
Net settlement on vesting of restricted share units (Note 15)	-72	1	-73
Net settlement on vesting of restricted share units (Note 15), shares		49,129
Net settlement on vesting of performance units (Note 15)	-6,500	9	-6,509
Net settlement on vesting of performance units (Note 15), shares		913,507
Distribution to noncontrolling interest	-899					-899
Stock-based compensation expense (Note 15)	4,973		4,973
Comprehensive income:
Net income	50,853			50,613		240
Other comprehensive income	56,660				56,665	-5
End balance, value at Mar. 31, 2014	1,429,092	2,331	1,266,733	562,312	-402,949	665
End balance, value (in shares) at Mar. 31, 2014		233,347,651
Beginning balance, value at Dec. 31, 2014	1,285,136	2,184	1,296,730	398,706	-412,484
Beginning balance, value (in shares) at Dec. 31, 2014	218,684,205	218,684,205
Issuance of common shares on exercise of options (Note 15) (in shares)	659,257	659,257
Issuance of common shares on exercise of options (Note 15)	5,841	7	5,834
Issuance of common shares under the employee stock purchase plan (Note 15) (in shares)		34,162
Issuance of common shares under the employee stock purchase plan (Note 15)	683		683
Net settlement on vesting of restricted share units (Note 15)	-78	1	-79
Net settlement on vesting of restricted share units (Note 15), shares		65,244
Net settlement on vesting of performance units (Note 15)		8	-8
Net settlement on vesting of performance units (Note 15), shares		845,524
Stock repurchased and retired (Note16)	-13,298	-6		-13,292
Stock repurchased and retired (Note16) (in shares)	-590,713	-590,713
Expenses related to stock purchase (Note 16)	-12			-12
Stock-based compensation expense (Note 15)	4,660		4,660
Comprehensive income:
Net income	44,653			44,653
Other comprehensive income	10,940				10,940
End balance, value at Mar. 31, 2015	$1,338,525	$2,194	$1,307,820	$430,055	($401,544)
End balance, value (in shares) at Mar. 31, 2015	219,697,679	219,697,679

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating activities
Net income attributable to Genpact Limited shareholders	$44,653	$50,613
Net income attributable to noncontrolling interest		240
Net income	44,653	50,853
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation and amortization	13,517	12,341
Amortization of debt issuance costs	1,840	801
Amortization of acquired intangible assets	7,341	6,018
Reserve for doubtful receivables	872	197
Unrealized (gain) loss on revaluation of foreign currency asset/liability	5,632	3,295
Equity-method investment activity, net	2,223	-20
Stock-based compensation expense	4,660	4,973
Deferred income taxes	-2,559	123
Others, net	-44	741
Change in operating assets and liabilities:
Increase in accounts receivable	-13,449	-7,901
Increase in other assets	-10,414	-16,968
Increase in accounts payable	177	124
Decrease in other liabilities	-42,376	-47,530
Increase in income taxes payable	12,215	7,194
Net cash provided by operating activities	24,288	14,241
Investing activities
Purchase of property, plant and equipment	-13,991	-14,530
Proceeds from sale of property, plant and equipment	576	103
Investment in equity affiliates	-6,701
Payment for business acquisitions, net of cash acquired	-11,678
Net cash used for investing activities	-31,794	-14,427
Financing activities
Repayment of capital lease obligations	-539	-502
Payment of debt issue cost	-1,045
Repayment of long-term debt	-1,687	-1,687
Proceeds from Short-term borrowings	1,410,000
Repayment of Short-term borrowings	-1,410,000
Proceeds from issuance of common shares under stock-based compensation plans	6,524	6,061
Payment for net settlement of stock-based awards	-5,603	-8,099
Payment of earn-out consideration	-126
Distribution to noncontrolling interest		-899
Payment for stock purchased and retired	-13,298
Payment for expenses related to stock purchase	-12
Net cash used for financing activities	-15,786	-5,126
Effect of exchange rate changes	-4,186	1,302
Net decrease in cash and cash equivalents	-23,292	-5,312
Cash and cash equivalents at the beginning of the period	461,788	571,276
Cash and cash equivalents at the end of the period	434,310	567,266
Supplementary information
Cash paid during the period for interest	6,943	6,143
Cash paid during the period for income taxes	13,120	21,907
Property, plant and equipment acquired under capital lease	$372	$534

Organization

Organization	3 Months Ended
Organization	Mar. 31, 2015
Organization	1. Organization
	The Company designs, transforms, and runs intelligent business operations, including those that are complex and specific to a set of chosen industries. The result is advanced operating models that assist the Company’s clients in becoming more competitive by supporting their growth and managing cost, risk, and compliance across a range of functions, such as finance and procurement, financial services account servicing, claims management, regulatory affairs, and industrial asset optimization. The Company’s Smart Enterprise Processes (SEPSM) proprietary framework helps companies reimagine how they operate by integrating effective Systems of EngagementTM, core IT, and Data-to-Action AnalyticsSM. The Company’s hundreds of long-term clients include more than one-fourth of the Fortune Global 500. The Company has a unique history: behind its passion for process and operational excellence is the Lean and Six Sigma heritage of a former General Electric division that has served GE businesses for more than 16 years.
	Prior to December 30, 2004, the business of the Company was conducted through various entities and divisions of the General Electric Company (“GE”). On December 30, 2004, in a series of transactions referred to as the “2004 Reorganization,” GE transferred such operations to the Company. In August 2007, the Company completed an initial public offering of its common shares, pursuant to which the Company and certain of its existing shareholders each sold 17,647,059 common shares. On March 24, 2010, the Company completed a secondary offering of its common shares pursuant to which GE’s shareholding in the Company decreased to 9.1% and it ceased to be a significant shareholder, although it continued to be a related party. During the year ended December 31, 2012, GE’s shareholding declined to less than 5.0%, as a result of which GE is no longer considered a related party.
	2012 Recapitalization
	On August 1, 2012, affiliates of GA and OH entered into an agreement to sell 67,750,678 common shares of the Company to Glory Investments A Limited, formerly known as South Asia Private Investments, an affiliate of Bain Capital Investors, LLC (“Bain Capital”). On October 25, 2012, Bain Capital and its affiliated assignees, along with two additional co-investors (RGIP, LLC, an investor in certain investment funds which are affiliated with Bain Capital, and Twickenham Investment Private Limited, an affiliate of the Government of Singapore Investment Corporation Private Limited), completed the purchase of the Company’s common shares covered by the share purchase agreement.
	On December 14, 2012, a secondary offering of the Company’s common shares by affiliates of General Atlantic (“GA”) and Oak Hill Capital Partners (“OH”) was completed. Upon the completion of the secondary offering, GA and OH each owned approximately 2.4% of the Company’s common shares outstanding, and they ceased to be significant shareholders and related parties.
	On August 30, 2012, the Company terminated its previous credit facility of $380,000 and entered into a new credit facility of $925,000. Net proceeds from the credit facility along with cash on hand were partially used to fund the payment of a special cash dividend in the amount of $2.24 per share in the third quarter of 2012. The share purchase transaction described above, the entry into a new credit facility and the payment of the special cash dividend are referred to collectively as the “2012 Recapitalization.” In June 2013, the Company amended its credit facility as described in Note 12.

Summary_of_significant_account

Summary of significant accounting policies	3 Months Ended
	Mar. 31, 2015
Summary of significant accounting policies	2. Summary of significant accounting policies
	(a) Basis of preparation and principles of consolidation
	The unaudited interim consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) for interim financial information and the rules and regulations of the Securities and Exchange Commission for reporting on Form 10-Q. Accordingly, they do not include certain information and note disclosures required by generally accepted accounting principles for annual financial reporting and should be read in conjunction with the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.
	The unaudited interim consolidated financial statements reflect all adjustments that management considers necessary for a fair presentation of the results of operations for these periods. The results of operations for the interim periods are not necessarily indicative of the results for the full year.

	The accompanying unaudited interim consolidated financial statements have been prepared on a consolidated basis and reflect the financial statements of Genpact Limited, a Bermuda company, and all of its subsidiaries that are more than 50% owned and controlled. When the Company does not have a controlling interest in an entity but exerts significant influence on the entity, the Company applies the equity method of accounting. All intercompany transactions and balances are eliminated in consolidation.
	The noncontrolling interest disclosed in the accompanying unaudited interim consolidated financial statements represents the noncontrolling partners’ interest in the operation of Genpact Netherlands B.V. and the profits or losses associated with such noncontrolling interest. The noncontrolling partners of Genpact Netherlands B.V. are individually liable for the tax obligations on their shares of profit as it is a partnership. Accordingly, noncontrolling interest relating to Genpact Netherlands B.V. has been computed prior to tax and disclosed accordingly in the unaudited interim Consolidated Statements of Income. During the year ended December 31, 2014, the Company purchased such noncontrolling interest, as a result of which the Company has 100% control of the partnership.
	(b) Use of estimates
	The preparation of consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements. Significant items subject to such estimates and assumptions include the useful lives of property, plant and equipment, the carrying amount of property, plant and equipment, intangibles and goodwill, reserves for doubtful receivables, valuation allowances for deferred tax assets, the valuation of derivative financial instruments, measurements of stock-based compensation, assets and obligations related to employee benefits, and income tax uncertainties and other contingencies. Management believes that the estimates used in the preparation of the consolidated financial statements are reasonable. Although these estimates are based upon management’s best knowledge of current events and actions, actual results could differ from these estimates. Any changes in estimates are adjusted prospectively in the Company’s consolidated financial statements.
	(c) Business combinations, goodwill and other intangible assets
	The Company accounts for its business combinations using the acquisition method of accounting in accordance with ASC 805, Business Combinations, by recognizing the identifiable tangible and intangible assets acquired, liabilities assumed, and any noncontrolling interest in the acquired business, measured at their acquisition date fair values. Contingent consideration is included within the acquisition cost and is recognized at its fair value on the acquisition date. A liability resulting from contingent consideration is remeasured to fair value as of each reporting date until the contingency is resolved. Changes in fair value are recognized in earnings. All assets and liabilities of the acquired businesses, including goodwill, are assigned to reporting units. Acquisition related costs are expensed as incurred under Selling, General and Administrative Expenses.
	Goodwill represents the cost of acquired businesses in excess of the fair value of identifiable tangible and intangible net assets purchased. Goodwill is not amortized but is tested for impairment at least on an annual basis on December 31, based on a number of factors, including operating results, business plans and future cash flows. The Company performs an assessment of qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. Based on the assessment of events or circumstances, the Company performs the quantitative assessment of goodwill impairment if it determines that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, based on the quantitative impairment analysis, the carrying value of the goodwill of the reporting unit exceeds the fair value of that goodwill, an impairment loss is recognized in an amount equal to the excess. In addition, the Company performs the qualitative assessment of goodwill impairment between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit below its carrying amount. See Note 10 for information and related disclosures.

	Intangible assets acquired individually or with a group of other assets or in a business combination are carried at cost less accumulated amortization based on their estimated useful lives as follows:


	Customer-related intangible assets	1-14 years
	Marketing-related intangible assets	1-10 years
	Other intangible assets	3-9 years
	Intangible assets are amortized over their estimated useful lives using a method of amortization that reflects the pattern in which the economic benefits of the intangible assets are consumed or otherwise realized.
	In business combinations, where the fair value of identifiable tangible and intangible net assets purchased exceeds the cost of the acquired business, the Company recognizes the resulting gain under “Other operating (income) expense, net” in the Consolidated Statements of Income.
	(d) Financial instruments and concentration of credit risk
	Financial instruments that potentially subject the Company to concentration of credit risk are reflected principally in cash and cash equivalents, short term deposits, derivative financial instruments and accounts receivable. The Company places its cash and cash equivalents and derivative financial instruments with corporations and banks with high investment grade ratings, limits the amount of credit exposure with any one corporation or bank and conducts ongoing evaluations of the creditworthiness of the corporations and banks with which it does business. To reduce its credit risk on accounts receivable, the Company conducts ongoing credit evaluations of its clients. GE accounted for 25% and 22% of receivables as of December 31, 2014 and March 31, 2015, respectively. GE accounted for 21% and 19% of revenues for the three months ended March 31, 2014 and 2015, respectively.
	(e) Recently adopted accounting pronouncements
	There are no recent accounting pronouncements issued by authoritative bodies that have been adopted by the Company.

Business_acquisitions_and_dive

Business acquisitions and divestitures	3 Months Ended
Business acquisitions and divestitures	Mar. 31, 2015
Business acquisitions and divestitures	3. Business acquisitions and divestitures
	A. Acquisitions
	(a) Acquisition of wealth management operations in the U.S.
	On January 16, 2015, the Company acquired certain assets and assumed certain liabilities of Citibank, N.A. comprising a portion of its U.S. wealth management operations for cash consideration of $11,678. In connection with the transaction, the Company hired certain employees of the seller’s U.S. wealth management business. With this transaction, the Company has acquired an end-to-end, technology-enabled wealth management service offering. There are no contingent consideration arrangements in connection with the acquisition.
	The Company recorded $9,100 in customer related intangible assets which have a weighted average amortization period of five years. Goodwill arising from the acquisition amounted to $3,400, has been allocated to the Company’s India reporting unit and is deductible for tax purposes. The Company also assumed a pre-existing liability of the seller amounting to $822 in connection with the acquisition. Acquisition-related costs amounting to $798 have been included in selling, general and administrative expenses as incurred. The results of operations of the business acquired and the fair value of the assets acquired and liabilities assumed are included in the Company’s Consolidated Financial Statements with effect from January 16, 2015, the date of the acquisition.
	(b) Acquisition of delivery center in Japan.
	On November 4, 2014, the Company acquired finance and accounting service delivery centre in Japan. In connection with the acquisition, the Company entered into a five-year Business Process Outsourcing (“BPO”) Agreement. The purchase consideration for the acquisition is set forth below:


	Cash consideration after preliminary adjustment for pension underfunding and closing net assets value	$	10,599
	Fair value of contingent earn-out consideration (ranging from $0 to $15,750)		11,198
	Total preliminary estimated purchase consideration	$	21,797
	The contingent earn-out consideration will be determined based on additional services contracted by the delivery center for the period from November 4, 2014 to November 4, 2021. The total consideration paid by the Company at closing for the acquisition was $7,108, net of cash acquired of $3,491. With this acquisition, the Company expands its presence in Japan and strengthens its finance and accounting services offerings.
	As of the date of these financial statements, the purchase consideration is pending final adjustment for pension underfunding and closing date net assets value in accordance with the terms of the agreement which may result in a corresponding adjustment to goodwill during the measurement period. The Company is also evaluating certain pension assets and liabilities and tax positions with respect to this acquisition which, when determined, may result in the recognition of additional assets and liabilities as of the acquisition date. Changes to the preliminary recorded assets and liabilities may result in a corresponding adjustment to goodwill. The measurement period will not exceed one year from the acquisition date.
	The following table summarizes the initial allocation of the preliminary estimated purchase price based on the fair value of the assets acquired and the liabilities assumed as of the date of the acquisition:


	Preliminary estimated purchase price	$	21,797
	Acquisition related costs included in selling, general and administrative expenses as incurred		796
	Recognized amounts of identifiable assets acquired and liabilities assumed
	Net assets acquired		(323	)
	Customer related intangible assets		7,522
	Deferred tax asset/(liability), net		(2,496	)
	Total identifiable net assets acquired	$	4,703
	Goodwill		17,094
	Total	$	21,797
	Goodwill has been allocated to the China reporting unit and is non-deductible for tax purposes as the company has not recorded any tax benefit for amortization. The customer-related intangible assets in the table above have a weighted average amortization period of 7 years.
	The results of operations of the delivery center and the fair value of its assets and liabilities are included in the Company’s Consolidated Financial Statements with effect from November 4, 2014, the date of the acquisition.
	(c) Pharmalink Consulting Limited and Pharmalink Consulting Inc.
	On May 29, 2014, the Company acquired 100% of the outstanding equity interest in each of Pharmalink Consulting Limited, a company incorporated under the laws of England and Wales, and Pharmalink Consulting Inc., a California corporation (collectively referred to as “Pharmalink”). The purchase consideration for the acquisition is set forth below:


	Cash consideration after preliminary adjustment for net debt and working capital	$	125,901
	Fair value of contingent earn-out consideration (ranging from $0 to $27,405)		12,730
	Total preliminary estimated purchase consideration	$	138,631
	The contingent earn-out consideration is based on gross profits and order bookings of sustainable outsourcing contracts for the period from June 1, 2014 to June 30, 2016. The total consideration paid at closing for the Company’s acquisition of Pharmalink was $123,701, net of cash acquired of $2,200. Pharmalink is a provider of regulatory affairs services to the life sciences industry. With this acquisition, the Company adds regulatory consulting, outsourcing and operations capabilities for clients in the life sciences industry.
	As of the date of these financial statements, the purchase consideration and the allocation for the acquisition are pending final adjustment for working capital and net debt in accordance with the terms of acquisition agreement which may result in a corresponding adjustment to goodwill during the measurement period. Changes to the preliminary recorded assets and liabilities may result in a corresponding adjustment to goodwill. The measurement period will not exceed one year from the acquisition date.
	During the quarter ended December 31, 2014, the Company recorded a measurement period adjustment that resulted in a non-current liability of $585 and a corresponding indemnification asset with no impact on goodwill. The measurement period adjustment did not have a significant impact on the Company’s Consolidated Statements of Income, Balance Sheets or Cash Flows in any period and, thus, was recorded during the period ended December 31, 2014.
	The following table summarizes the preliminary allocation of the preliminary estimated purchase price based on the fair value of the assets acquired and the liabilities assumed as of the date of acquisition including measurement period adjustments:


	Preliminary estimated purchase price	$	138,631
	Acquisition related costs included in selling, general and administrative expenses as incurred		1,977

	Recognized amounts of identifiable assets acquired and liabilities assumed

	Net assets acquired		7,174
	Intangible assets		29,923
	Deferred tax asset/(liability), net		(8,419	)
	Total identifiable net assets acquired	$	28,678
	Goodwill		109,953
	Total	$	138,631
	Goodwill has been allocated to the India reporting unit and is not deductible for tax purposes. The intangible assets consist of customer- and marketing-related intangible assets with a weighted average amortization period of 6 years.
	The results of operations of Pharmalink and the fair value of its assets and liabilities are included in the Company’s Consolidated Financial Statements with effect from May 29, 2014, the date of the acquisition.

Cash_and_cash_equivalents

Cash and cash equivalents	3 Months Ended
Cash and cash equivalents	Mar. 31, 2015
Cash and cash equivalents	4. Cash and cash equivalents
	Cash and cash equivalents as of December 31, 2014 and March 31, 2015 comprise:


		As of December 31,		As of March 31,
		2014		2015
	Deposits with banks	$	130,610	$	96,737
	Other cash and bank balances		331,178		337,573

	Total	$	461,788	$	434,310

Accounts_receivable_net_of_res

Accounts receivable, net of reserve for doubtful receivables	3 Months Ended
	Mar. 31, 2015
Accounts receivable, net of reserve for doubtful receivables	5. Accounts receivable, net of reserve for doubtful receivables
	The following table provides details of the reserve for doubtful receivables recorded by the Company:


		Year ended December 31,			Three months ended
		2014			March 31, 2015
	Opening Balance as of January 1	$	16,560		$	15,192
	Additions due to acquisitions		178			—
	Additions charged to cost and expense		3,107			872
	Deductions		(4,653	)		(137	)

	Closing Balance		15,192			15,927

	Accounts receivable were $540,946 and $545,545 and the reserves for doubtful receivables were $15,192 and $15,927, resulting in net accounts receivable balances of $525,754 and $529,618 as of December 31, 2014 and March 31, 2015, respectively. In addition, accounts receivable due after one year of $11,635 and $9,319 as of December 31, 2014 and March 31, 2015, respectively, are included under other assets in the Consolidated Balance Sheets.
	Accounts receivable from related parties were $5,840 and $2,064, as of December 31, 2014 and March 31, 2015, respectively. There are no reserves for doubtful receivables in respect of amounts due from related parties.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
Fair Value Measurements	Mar. 31, 2015
Fair Value Measurements	6. Fair Value Measurements
	The Company measures certain financial assets and liabilities, including derivative instruments, at fair value on a recurring basis. The fair value measurements of these derivative instruments were determined using the following inputs as of December 31, 2014 and March 31, 2015:


			As of December 31, 2014
			Fair Value Measurements at Reporting Date Using
					Quoted Prices in		Significant Other		Significant Other
					Active Markets for		Observable Inputs		Unobservable
					Identical Assets				Inputs
			Total		(Level 1)		(Level 2)		(Level 3)
	Assets
	Derivative instruments (Note a)		$	33,967	$	—	$	33,967	$	—

	Total		$	33,967	$	—	$	33,967	$	—

	Liabilities
	Derivative instruments (Note b)		$	101,516	$	—	$	101,516	$	—

	Total		$	101,516	$	—	$	101,516	$	—


			As of March 31, 2015
			Fair Value Measurements at Reporting Date Using
					Quoted Prices in		Significant Other		Significant Other
					Active Markets for		Observable Inputs		Unobservable
					Identical Assets				Inputs
			Total		(Level 1)		(Level 2)		(Level 3)
	Assets
	Derivative instruments (Note a)		$	52,904	$	—	$	52,904	$	—

	Total		$	52,904	$	—	$	52,904	$	—

	Liabilities
	Derivative instruments (Note b)		$	85,559	$	—	$	85,559	$	—

	Total		$	85,559	$	—	$	85,559	$	—


	(a)	Included in prepaid expenses and other current assets and other assets in the consolidated balance sheets.
	(b)	Included in accrued expenses and other current liabilities and other liabilities in the consolidated balance sheets.
	The Company values its derivative instruments based on market observable inputs including both forward and spot prices for the underlying currencies. The quotes are taken from an independent market database.

Derivative_financial_instrumen

Derivative financial instruments	3 Months Ended
Derivative financial instruments	Mar. 31, 2015
Derivative financial instruments	7. Derivative financial instruments
	The Company is exposed to the risk of rate fluctuations on foreign currency assets and liabilities, and foreign currency denominated forecasted cash flows. The Company has established risk management policies, including the use of derivative financial instruments to hedge foreign currency assets and liabilities, and foreign currency denominated forecasted cash flows. These derivative financial instruments are largely deliverable and non-deliverable forward foreign exchange contracts. The Company enters into these contracts with counterparties which are banks or other financial institutions, and the Company considers the risk of non-performance by the counterparties not to be material. The forward foreign exchange contracts mature between zero and sixty-nine months and the forecasted transactions are expected to occur during the same period.
	The following table presents the aggregate notional principal amounts of outstanding derivative financial instruments together with the related balance sheet exposure:


			Notional principal amounts								Balance sheet exposure asset (liability)
			(note a)								(note b)
			As of December 31,				As of March 31,				As of December 31,				As of March 31,
			2014				2015				2014				2015
	Foreign exchange forward contracts denominated in:
	United States Dollars (sell) Indian Rupees (buy)		$	1,282,800			$	1,447,300			$	(86,913	)		$	(72,126	)
	United States Dollars (sell) Mexican Peso (buy)			5,640				17,250				(514	)			(1,012	)
	United States Dollars (sell) Philippines Peso (buy)			72,900				72,900				(738	)			(444	)
	Euro (sell) United States Dollars (buy)			98,903				109,774				5,458				15,756
	Euro (sell) Romanian Leu (buy)			81,072				67,667				562				1,989
	Japanese Yen (sell) Chinese Renminbi (buy)			28,586				34,956				2,766				2,281
	Pound Sterling (sell) United States Dollars (buy)			133,435				117,920				4,278				9,530
	Australian Dollars (sell) United States Dollars (buy)			104,362				94,891				7,552				11,371

											$	(67,549	)		$	(32,655	)


	(a)	Notional amounts are key elements of derivative financial instrument agreements but do not represent the amount exchanged by counterparties and do not measure the Company’s exposure to credit or market risks. However, the amounts exchanged are based on the notional amounts and other provisions of the underlying derivative financial instrument agreements.
	(b)	Balance sheet exposure is denominated in U.S. dollars and denotes the mark-to-market impact of the derivative financial instruments on the reporting date.
	FASB guidance on Derivatives and Hedging requires companies to recognize all derivative instruments as either assets or liabilities at fair value in the statement of financial position. In accordance with the FASB guidance on Derivatives and Hedging, the Company designates foreign exchange forward contracts as cash flow hedges for forecasted revenues and the purchase of services. In addition to this program, the Company has derivative instruments that are not accounted for as hedges under the FASB guidance in order to hedge the foreign exchange risks related to balance sheet items such as receivables and intercompany borrowings denominated in currencies other than the underlying functional currency.
	The fair value of the derivative instruments and their location in the Company’s financial statements are summarized in the table below:


			Cash flow hedges								Non-designated
			As of December 31,				As of March 31,				As of December 31,				As of March 31,
			2014				2015				2014				2015
	Assets
	Prepaid expenses and other current assets		$	16,636			$	28,036			$	202			$	508
	Other assets		$	17,129			$	24,360			$	—			$	—
	Liabilities
	Accrued expenses and other current liabilities		$	64,650			$	48,941			$	965			$	195
	Other liabilities		$	35,901			$	36,423			$	—			$	—

	Cash flow hedges
	For derivative instruments that are designated and qualify as cash flow hedges, the effective portion of the gain (loss) on the derivative instrument is reported as a component of other comprehensive income (loss) and reclassified into earnings in the same period or periods during which the hedged transaction is recognized in the consolidated statements of income. Gains (losses) on the derivatives representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness are recognized in earnings as incurred.
	In connection with cash flow hedges, the gains (losses) recorded as a component of other comprehensive income (loss), or OCI, and the related tax effects are summarized below:


			Three months ended March 31,
			2014												2015
			Before-Tax				Tax				Net of tax				Before-Tax				Tax				Net of tax
			amount				(Expense) or				Amount				amount				(Expense) or				Amount
							Benefit												Benefit
	Opening balance as of January 1		$	(205,952	)		$	72,612			$	(133,340	)		$	(66,786	)		$	23,646			$	(43,140	)

	Net gains (losses) reclassified into statement of income on completion of hedged transactions			(12,400	)			4,356				(8,044	)			(9,254	)			3,251				(6,003	)
	Changes in fair value of effective portion of outstanding derivatives, net			47,238				(17,290	)			29,948				24,564				(8,734	)			15,830

	Gain (loss) on cash flow hedging derivatives, net			59,638				(21,646	)			37,992				33,818				(11,985	)			21,833

	Closing balance as of March 31		$	(146,314	)		$	50,966			$	(95,348	)		$	(32,968	)		$	11,661			$	(21,307	)


	Gains or losses recognized in other comprehensive income (loss) and their effects on financial performance are summarized below:


	Derivatives in Cash Flow		Amount of Gain								Location of Gain		Amount of Gain								Location of Gain		Amount of Gain (Loss)
	Hedging Relationships		(Loss) recognized in								(Loss) reclassified from		(Loss) reclassified								(Loss) recognized in		recognized in income on
			OCI on Derivatives								OCI into Statement of		from OCI into								Income on		Derivatives (Ineffective
	(Effective Portion)						Income (Effective	Statement of Income						Derivatives	Portion and Amount
							Portion)	(Effective Portion)						(Ineffective Portion	excluded from
														and Amount	Effectiveness Testing)
														excluded from
														Effectiveness
			Three months ended													Three months ended								Testing)		Three months ended
			March 31,													March 31,										March 31,
			2014				2015									2014						2015						2014		2015
Forward foreign exchange contracts			$	47,238			$	24,564						Revenue		$	(670	)				$	2,495			Foreign exchange		$	—	$	—
																										(gains) losses,
		net
										Cost of revenue			(9,398	)			(9,427	)
										Selling, general and			(2,332	)			(2,322	)
										administrative
										expenses

		$	47,238			$	24,564					$	(12,400	)		$	(9,254	)				$	—			$	—

Non-designated Hedges


Derivatives not		Location of (Gain) Loss		Amount of (Gain) Loss
designated as hedging		recognized in Statement of		recognized in Statement of
instruments		Income on Derivatives		Income on Derivatives
				Three months ended
				March 31,
				2014				2015
Forward foreign exchange contracts (Note a)		Foreign exchange (gains) losses, net		$	(27	)		$	(2,244	)

				$	(27	)		$	(2,244	)


(a)	These forward foreign exchange contracts were entered into to hedge the fluctuations in foreign exchange rates for recognized balance sheet items such as receivables and intercompany borrowings, and were not originally designated as hedges under FASB guidance on derivatives and hedging. Realized (gains) losses and changes in the fair value of these derivatives are recorded in foreign exchange (gains) losses, net in the consolidated statements of income.

Prepaid_expenses_and_other_cur

Prepaid expenses and other current assets	3 Months Ended
Prepaid expenses and other current assets	Mar. 31, 2015
Prepaid expenses and other current assets	8. Prepaid expenses and other current assets
	Prepaid expenses and other current assets consist of the following:


		As of December 31,		As of March 31,
		2014		2015
	Advance taxes	$	61,251	$	76,915
	Deferred transition costs		40,185		36,148
	Derivative instruments		16,838		28,544
	Employee advances		5,816		5,084
	Advances to suppliers		3,358		1,440
	Prepaid expenses		12,949		15,775
	Customer Acquisition Cost		5,557		5,919
	Deposits		1,754		2,817
	Others		7,772		8,276

		$	155,480	$	180,918

Property_plant_and_equipment_n

Property, plant and equipment, net	3 Months Ended
Property, plant and equipment, net	Mar. 31, 2015
Property, plant and equipment, net	9. Property, plant and equipment, net
	Property, plant and equipment, net consist of the following:


		As of December 31,			As of March 31,
		2014			2015
	Property, plant and equipment, gross	$	531,960		$	540,629
	Less: Accumulated depreciation and amortization		(356,024	)		(367,053	)

	Property, plant and equipment, net	$	175,936		$	173,576

	Depreciation expense on property, plant and equipment for the three months ended March 31, 2014 and 2015 was $10,748 and $11,717, respectively. The amount of computer software amortization for the three months ended March 31, 2014 and 2015 was $2,156 and $2,362, respectively.
	The depreciation and amortization expense set forth above includes the effect of the reclassification of foreign exchange (gains) losses related to the effective portion of foreign currency derivative contracts, amounting to $563 and $562 for the three months ended March 31, 2014 and 2015, respectively.

Goodwill_and_intangible_assets

Goodwill and intangible assets	3 Months Ended
Goodwill and intangible assets	Mar. 31, 2015
Goodwill and intangible assets	10. Goodwill and intangible assets
	The following table presents changes in goodwill for the year ended December 31, 2014 and three months ended March 31, 2015:


		Year ended			Three months ended
		December 31, 2014			March 31, 2015
	Opening balance	$	953,849		$	1,057,214
	Goodwill relating to acquisitions consummated during the period		127,047			3,400
	Effect of exchange rate fluctuations		(23,682	)		(8,116	)

	Closing balance	$	1,057,214		$	1,052,498

	The total amount of goodwill deductible for tax purposes is $37,628 and $40,186 as of December 31, 2014 and March 31, 2015, respectively.
	The Company’s intangible assets acquired either individually or with a group of other assets or in a business combination are as follows:


		As of December 31, 2014								As of March 31, 2015
		Gross			Accumulated			Net		Gross		Accumulated		Net
		carrying			amortization					carrying		amortization
		amount								amount
	Customer-related intangible assets	$	310,069		$	228,095		$	81,974	$	317,795	$	233,693	$	84,102
	Marketing-related intangible assets		43,137			23,801			19,336		43,061		24,585		18,476
	Other intangible assets		19,002			5,768			13,234		20,865		6,157		14,708

		$	372,208		$	257,664		$	114,544	$	381,721	$	264,435	$	117,286

	Amortization expenses for intangible assets for the three months ended March 31, 2014 and 2015 were $6,018 and $7,341, respectively, and are disclosed in the consolidated statements of income under amortization of acquired intangible assets.

Shortterm_borrowings

Short-term borrowings	3 Months Ended
	Mar. 31, 2015
Short-term borrowings	11. Short-term borrowings
	The Company has the following borrowing facilities:

	(a)	Fund-based and non-fund-based credit facilities with banks, which are available for operational requirements in the form of overdrafts, letters of credit, guarantees and short-term loans. As of December 31, 2014 and March 31, 2015, the limits available were $14,282 and $14,417, respectively, out of which $8,138 and $8,366 was utilized, constituting non-funded drawdown.

	(b)	A fund-based and non-fund based revolving credit facility of $250,000, which was initially entered into in August 2012 and amended in June 2013 as described in note 12. A portion of this facility was initially used to fund the special cash dividend paid in September 2012 and for the acquisition of the Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited in February 2013. Additionally, this facility was utilized in part to fund the Company’s stock purchase pursuant to its March 2014 self-tender offer and its acquisition of Pharmalink, each in the second quarter of 2014. As of both December 31, 2014 and March 31, 2015, a total of $137,224 was utilized, of which $135,000 constituted funded drawdown and $2,224 constituted non-funded drawdown. This facility expires in August 2017.The funded drawdown amount bears interest at LIBOR plus a margin of 2.50% as of both December 31, 2014 and March 31, 2015. The unutilized amount on the facility bears a commitment fee of 0.50%. Indebtedness under the facility is secured by certain assets of the Company, and the credit agreement contains certain covenants, including a maximum leverage covenant that becomes effective only if the revolving facility is drawn for $50,000 or more. For the three months ended March 31, 2015, the Company is in compliance with all of the financial covenants.

	(c)	On January 27, 2015 and March 23, 2015, the Company obtained short-term loans in the amount of $672,500 and $737,500, respectively, from Morgan Stanley Senior Funding, Inc. in connection with certain internal reorganization transactions. These loans bore interest at a rate of 2.00% per annum and were fully repaid on January 30, 2015 and March 26, 2015, respectively. The Company recorded $1,045 in debt issuance expenses and $235 in interest with respect to the amounts borrowed under the short-term loans.

Longterm_debt

Long-term debt	3 Months Ended
Long-term debt	Mar. 31, 2015
Long-term debt	12. Long-term debt
	In August 2012, the Company obtained credit facilities aggregating $925,000 from a consortium of financial institutions to (i) finance the repayment of the $380,000 balance outstanding under the previous existing credit facility, (ii) fund a portion of its special cash dividend and (iii) for general corporate purposes of the Company, including working capital requirements. The credit agreement provides for a term loan of $675,000 and a revolving credit facility of $250,000.
	In June 2013, the Company amended this credit facility. Under the amended facility, the applicable margin on the term loan and the revolving credit facility has been reduced from 3.25% p.a. to 2.75% p.a. and 2.50% p.a., respectively. In addition, the LIBOR floor on the term loan was reduced from 1% under the earlier facility to 0.75% under the amended facility. As of the amendment date, the gross outstanding term loan amounted to $671,625. The amendment did not result in a substantial modification of $553,589 of the outstanding term loan under the previous credit facility. Further, as a result of the amendment, the Company extinguished $118,036 of the outstanding term loan under the previous credit facility and obtained additional funding amounting to $121,410, increasing the total term loan outstanding to $675,000. As a result, the Company expensed $3,103 representing partial acceleration of the amortization of the existing unamortized debt issuance costs and an additional fee paid to the lenders in respect of the extinguished amount. The overall borrowing capacity under the revolving facility did not change. The amendment of the revolving facility resulted in accelerated amortization of $54 relating to the existing unamortized debt issuance cost. The remaining unamortized costs and an additional third party fee paid in connection with the amendment of the term loan and revolving facility will be amortized over the term of the term loan and revolving facility, which end on August 30, 2019 and August 30, 2017, respectively.
	As of December 31, 2014 and March 31, 2015, the outstanding term loan, net of debt amortization expense of $11,274 and $10,664 was $653,602 and $652,522, respectively. As of December 31, 2014 and March 31, 2015, the term loan bore interest at LIBOR (LIBOR floor of 0.75%) plus an applicable margin of 2.75% p.a. Indebtedness under the loan facility is secured by certain assets of the Company. The amount outstanding on the term loan as of March 31, 2015 will be repaid through quarterly payments of 0.25% of the principal amount of $675,000, and the balance will be repaid upon the maturity of the term loan on August 30, 2019.
	The maturity profile of the term loan, net of debt amortization expense, is as follows:


	Year ended	Amount
	2015	$	3,210
	2016		4,306
	2017		4,338
	2018		4,363
	2019		636,305

		$	652,522

Accrued_expenses_and_other_cur

Accrued expenses and other current liabilities	3 Months Ended
Accrued expenses and other current liabilities	Mar. 31, 2015
Accrued expenses and other current liabilities	13. Accrued expenses and other current liabilities


		As of December 31,		As of March 31,
		2014		2015
	Accrued expenses	$	114,770	$	110,652
	Accrued employee cost		143,829		86,378
	Deferred transition revenue		49,792		45,585
	Statutory liabilities		24,713		28,886
	Retirement benefits		16,807		20,099
	Derivative instruments		65,615		49,136
	Advance from customers		19,857		22,711
	Earn-out consideration		3,232		3,211
	Other liabilities		12,399		9,869

		$	451,014	$	376,527

Employee_benefit_plans

Employee benefit plans	3 Months Ended
Employee benefit plans	Mar. 31, 2015
Employee benefit plans	14. Employee benefit plans
	The Company has employee benefit plans in the form of certain statutory and other schemes covering its employees.
	Defined benefit plans
	In accordance with Indian law, the Company provides a defined benefit retirement plan (the “Gratuity Plan”) covering substantially all of its Indian employees. In accordance with Mexican law, the Company provides termination benefits to all of its Mexican employees. In addition, certain of the Company’s subsidiaries in the Philippines and Japan have sponsored defined benefit retirement programs.
	Net defined benefit plan costs for the three months ended March 31, 2014 and 2015 include the following components:


		Three months ended March 31,
		2014			2015
	Service costs	$	1,190		$	1,384
	Interest costs		619			678
	Amortization of actuarial loss		78			85
	Expected return on plan assets		(447	)		(549	)

	Net Gratuity Plan costs	$	1,440		$	1,598

	Defined contribution plans
	During the three months ended March 31, 2014 and 2015, the Company contributed the following amounts to defined contribution plans in various jurisdictions:


		Three months ended March 31,
		2014			2015
	India	$	3,575		$	3,909
	U.S.		1,591			2,628
	U.K.		545			1,040
	China		3,537			3,516
	Other Regions		1,186			1,106

	Total		10,434			12,199

Stockbased_compensation

Stock-based compensation	3 Months Ended
Stock-based compensation	Mar. 31, 2015
Stock-based compensation	15. Stock-based compensation

	The Company has issued options under the Genpact Global Holdings 2005 Plan (the “2005 Plan”), Genpact Global Holdings 2006 Plan (the “2006 Plan”), Genpact Global Holdings 2007 Plan (the “2007 Plan”) and Genpact Limited 2007 Omnibus Incentive Compensation Plan (the “2007 Omnibus Plan”) to eligible persons who are employees and directors and certain other persons associated with the Company.

	With respect to options granted under the 2005, 2006 and 2007 Plans before the date of adoption of the 2007 Omnibus Plan, if an award granted under any such plan is forfeited or otherwise expires, terminates, or is cancelled without the delivery of shares, then the shares covered by the forfeited, expired, terminated, or cancelled award will be added to the number of shares otherwise available for grant under the respective plans.

	From the date of adoption of the 2007 Omnibus Plan on July 13, 2007, shares underlying options forfeited, expired, terminated, or cancelled under any of the plans will be added to the number of shares otherwise available for grant under the 2007 Omnibus Plan. The 2007 Omnibus Plan was amended and restated on April 11, 2012 to increase the number of common shares authorized for issuance by 5,593,200 shares to 15,000,000 shares.

	On August 30, 2012, the Company’s Board of Directors declared a special cash dividend of $2.24 per share. The special cash dividend resulted in an adjustment to stock-based awards under both the 2007 Omnibus Plan and the 2005 Plan. Accordingly, effective September 24, 2012, the payment date of the special cash dividend, the number of common shares authorized for issuance under the 2007 Omnibus Plan was increased by 2,544,327 shares. The number of common shares authorized for issuance under the 2005 Plan was increased by 495,915 shares.

	Further, as of December 31, 2012, the number of common shares authorized for issuance under the 2007 Omnibus Plan had been increased by 6,314,496 shares as a result of the termination, expiration or forfeiture of options granted under the Company’s stock incentive plans other than the 2007 Omnibus Plan.

	In accordance with the anti-dilutive provisions of the 2005 Plan, 2006 Plan, 2007 Plan and 2007 Omnibus Plan, the Company adjusted both the exercise price and the number of stock based awards outstanding as of the record date of the special cash dividend. The aggregate fair value, intrinsic value and the ratio of the exercise price to the market price were approximately equal immediately before and after the adjustments. Therefore, in accordance with the equity restructuring guidance under ASC 718, Compensation-Stock Compensation, no incremental compensation expense was recognized for the adjustment to the outstanding stock-based awards as a result of the special cash dividend.

	Stock-based compensation costs relating to the foregoing plans during the three months ended March 31, 2014 and 2015, were $4,902 and $4,579, respectively, and have been allocated to cost of revenue and selling, general, and administrative expenses.

	Stock options

	Options granted are subject to a vesting requirement. Options granted under the plan are exercisable into common shares of the Company, have a contractual period of ten years and vest over four to five years unless specified otherwise in the applicable award agreement. The Company recognizes compensation cost over the vesting period of the option. Compensation cost is determined at the date of grant by estimating the fair value of an option using the Black-Scholes option-pricing model.

	The following table shows the significant assumptions used in connection with the determination of the fair value of options granted in the three months ended March 31, 2015. No options were granted in the three months ended March 31, 2014.



			Three months ended March 31, 2015
	Dividend yield			—
	Expected life (in months)			84
	Risk free rate of interest for expected life			1.99	%
	Volatility			34.97	%

	A summary of stock option activity during the three months ended March 31, 2015 is set out below:



			Three months ended March 31, 2015
			Shares arising				Weighted average			Weighted average		Aggregate
			out of options				exercise price			remaining		intrinsic
										contractual life		value
										(years)
	Outstanding as of January 1, 2015			7,371,727			$	15.44			5.9	$	—
	Granted			170,000				22.77			—		—
	Forfeited			—				—			—		—
	Expired			—				—			—		—
	Exercised			(659,257	)			8.86			—		9,487

	Outstanding as of March 31, 2015			6,882,470			$	16.26			6.1	$	48,967

	Vested as of March 31, 2015 and expected to vest thereafter (Note a)			6,578,643			$	15.99			6.1	$	47,743
	Vested and Exercisable as of March 31, 2015			2,883,564			$	11.94			3	$	32,599
	Weighted average grant date fair value of grants made during the period		$	9.15


		(a)	Options expected to vest reflect an estimated forfeiture rate.

	As of March 31, 2015, the total remaining unrecognized stock-based compensation cost for options expected to vest amounted to $19,193, which will be recognized over the weighted average remaining requisite vesting period of 3.1 years.

	Restricted Share Units

	The Company has granted restricted share units, or RSUs, under the 2007 Omnibus Plan. Each RSU represents the right to receive one common share at a future date. The fair value of each RSU is the market price of one common share of the Company on the date of the grant. The RSUs granted to date have graded vesting schedules of three months to four years. The compensation expense is recognized on a straight-line basis over the vesting term.

	A summary of RSUs granted during the three months ended March 31, 2015 is set out below:



		Three months ended March 31, 2015
		Number of Restricted Share				Weighted Average Grant Date
		Units				Fair Value
Outstanding as of January 1, 2015			488,418			$	15.36
Granted			—				—
Vested (Note a)			(8,942	)			14.32
Forfeited			(12,422	)			13.93

Outstanding as of March 31, 2015			467,054			$	15.41

Expected to vest (Note b)			439,485


(a)	Vested RSUs have been net settled upon vesting by issuing 5,417 shares (net of minimum statutory tax withholding).
(b)	RSUs expected to vest reflect an estimated forfeiture rate.

61,057 RSUs vested in the year ended December 31, 2013, in respect of which 59,827 were issued in January 2015 after withholding shares to the extent of the minimum statutory withholding taxes.

92,692 RSUs vested in the year ended December 31, 2014, shares in respect of which will be issuable on December 31, 2015 after withholding shares to the extent of the minimum statutory withholding taxes.

As of March 31, 2015, the total remaining unrecognized stock-based compensation cost related to RSUs amounted to $3,490, which will be recognized over the weighted average remaining requisite vesting period of 2.0 years.

Performance Units

The Company also grants stock awards in the form of performance units, or PUs, under the 2007 Omnibus Plan.

Each PU represents the right to receive one common share at a future date based on the Company’s performance against specified targets. PUs granted to date have vesting schedules of six months to three years. The fair value of each PU is the market price of one common share of the Company on the date of grant and assumes that performance targets will be achieved. The PUs granted under the plan are subject to cliff vesting. The compensation expense for such awards is recognized on a straight-line basis over the vesting terms. Over the performance period, the number of shares to be issued is adjusted upward or downward based upon the probability of achievement of the performance targets. The ultimate number of shares issued and the related compensation cost recognized is based on a comparison of the final performance metrics to the specified targets.

A summary of PU activity during the three months ended March 31, 2015 is set out below:



		Three months ended March 31, 2015
		Number of				Weighted			Maximum Shares
		Performance Units				Average Grant			Eligible to Receive
						Date Fair Value
Outstanding as of January 1, 2015			1,292,750			$	16.78			2,648,626
Granted			562,000				22.77			1,405,000
Vested			—				—			—
Forfeited			(16,350	)			16.78			(24,525	)
Addition due to achievement of higher than target performance goals (Note a)			51,595				16.78
Reduction due to achievement of lower than maximum performance goals (Note b)										(1,296,105	)

Outstanding as of March 31, 2015			1,889,995			$	18.56			2,732,996

Expected to vest (Note c)			1,588,070


(a)	Represents additional shares awarded ranging from 0.8% to 6.6% of the target shares as a result of the achievement of higher-than-target performance for the PUs granted in April 2014.
(b)	Represents a 143.4% and 49.2% reduction in the maximum shares eligible to vest as a result of the certification of the level of achievement of the performance goals for the PUs granted in April 2014.
(c)	PUs expected to vest are based on the probable achievement of the performance targets after considering an estimated forfeiture rate.
(d)	1,329,270 PUs granted in March 2012 vested as of December 31, 2014 based on the compensation committee’s certification of the achievement of the performance goals for the performance period based on the Company’s audited financial statements. Shares in respect of such PUs were issued in January 2015 (845,524 shares after withholding shares to the extent of the minimum statutory withholding taxes).

As of March 31, 2015, the total remaining unrecognized stock-based compensation costs related to PUs amounted to $22,029, which will be recognized over the weighted average remaining requisite vesting period of 2.2 years.

Employee Stock Purchase Plan (ESPP)

On May 1, 2008, the Company adopted the Genpact Limited U.S. Employee Stock Purchase Plan and the Genpact Limited International Employee Stock Purchase Plan (together, the “ESPP”).

The ESPP allows eligible employees to purchase the Company’s common shares through payroll deductions at 90% of the closing price of the Company’s common shares on the last business day of each purchase interval. The dollar amount of common shares purchased under the ESPP must not exceed 15% of the participating employee’s base salary, subject to a cap of $25 per employee per calendar year. With effect from September 1, 2009, the offering periods commence on the first business day in March, June, September and December of each year and end on the last business day in the subsequent May, August, November and February of each year. 4,200,000 common shares have been reserved for issuance in the aggregate over the term of the ESPP.

During the three months ended March 31, 2014 and 2015, 40,534 and 34,162 common shares, respectively, were issued under ESPP.

The ESPP is considered compensatory under the FASB guidance on Compensation-Stock Compensation.

The compensation expense for the employee stock purchase plan is recognized in accordance with the FASB guidance on Compensation-Stock Compensation. The compensation expense for ESPP during the three months ended March 31, 2014 and 2015 was $71 and $81, respectively, and has been allocated to cost of revenue and selling, general, and administrative expenses.

Capital_Stock

Capital Stock	3 Months Ended
Capital Stock	Mar. 31, 2015
Capital Stock	16. Capital Stock
	Stock Repurchase Plan
	In February 2015, the Company’s Board of Directors authorized a program to repurchase up to $250,000 in value of the Company’s common shares. The Company’s share repurchase program does not obligate it to acquire any specific number of shares. Under the program, shares may be repurchased in privately negotiated and/or open market transactions, including under plans complying with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended. During the three months ended March 31, 2015 the Company purchased 590,713 of its common shares at a weighted average price of approximately $22.51 per share for an aggregate cash amount of approximately $13,298. The purchased shares have been retired.
	The Company records repurchases of its common shares on the settlement date of each transaction. Shares purchased and retired are deducted to the extent of their par value from common stock and from retained earnings for the excess over par value. Direct costs incurred to acquire the shares are included in the total cost of the shares purchased. For the three months ended March 31, 2015, $12 was deducted from retained earnings as direct costs related to share repurchases.

Earnings_per_share

Earnings per share	3 Months Ended
Earnings per share	Mar. 31, 2015
Earnings per share	17. Earnings per share
	The Company calculates earnings per share in accordance with FASB guidance on Earnings per Share. Basic and diluted earnings per common share give effect to the change in the number of common shares of the Company. The calculation of basic earnings per common share was determined by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the respective periods. The potentially dilutive shares, consisting of outstanding options on common shares, restricted share units, performance units and common shares to be issued under the employee stock purchase plan, have been included in the computation of diluted net earnings per share and the weighted average shares outstanding, except where the result would be anti-dilutive.
	The number of stock options outstanding but not included in the computation of diluted earnings per common share because their effect was anti-dilutive is 3,379,764 and 3,928,000 for the three months ended March 31, 2014, and 2015, respectively.


		Three months ended March 31,
		2014		2015
	Net income available to Genpact Limited common shareholders	$	50,613	$	44,653
	Weighted average number of common shares used in computing basic earnings per common share		232,093,917		219,892,695
	Dilutive effect of stock-based awards		5,181,734		2,454,406

	Weighted average number of common shares used in computing dilutive earnings per common share		237,275,651		222,347,101

	Earnings per common share attributable to Genpact Limited common shareholders
	Basic	$	0.22	$	0.2
	Diluted	$	0.21	$	0.2

Cost_of_revenue

Cost of revenue	3 Months Ended
Cost of revenue	Mar. 31, 2015
Cost of revenue	18. Cost of revenue
	Cost of revenue consists of the following:


		Three months ended March 31,
		2014		2015
	Personnel expenses	$	227,027	$	242,948
	Operational expenses		86,421		102,797
	Depreciation and amortization		10,841		11,731

		$	324,289	$	357,476

Selling_general_and_administra

Selling, general and administrative expenses	3 Months Ended
Selling, general and administrative expenses	Mar. 31, 2015
Selling, general and administrative expenses	19. Selling, general and administrative expenses
	Selling, general and administrative expenses consist of the following:


		Three months ended March 31,
		2014		2015
	Personnel expenses	$	89,506	$	105,838
	Operational expenses		30,929		40,562
	Depreciation and amortization		2,063		2,348

		$	122,498	$	148,748

Other_operating_income_expense

Other operating (income) expense, net	3 Months Ended
Other operating (income) expense, net	Mar. 31, 2015
Other operating (income) expense, net	20. Other operating (income) expense, net


		Three months ended March 31,
		2014			2015
	Other operating (income) expense	$	(220	)	$	(462	)
	Change in fair value of earn out consideration and deferred consideration (relating to business acquisitions)		(1,642	)		—

	Other operating (income) expense, net	$	(1,862	)	$	(462	)

Other_income_expense_net

Other income (expense), net	3 Months Ended
Other income (expense), net	Mar. 31, 2015
Other income (expense), net	21. Other income (expense), net
	Other income (expense), net consists of the following:


		Three months ended March 31,
		2014			2015
	Interest income	$	1,359		$	1,196
	Interest expense		(7,761	)		(10,221	)
	Other income (expense)		(131	)		458

	Other income (expense), net	$	(6,533	)	$	(8,567	)

Income_taxes

Income taxes	3 Months Ended
Income taxes	Mar. 31, 2015
Income taxes	22. Income taxes
	The Company determines the tax provision for interim periods using an estimate of its annual effective tax rate adjusted for discrete items, if any, that are taken into account in the relevant period. Each quarter, the Company updates its estimate of the annual effective tax rate, and if its estimated tax rate changes, the Company makes a cumulative adjustment.
	As of December 31, 2014, the Company had unrecognized tax benefits amounting to $22,718, including an amount of $21,268 which, if recognized, would impact the effective tax rate.
	The following table summarizes activities related to the Company’s unrecognized tax benefits for uncertain tax positions from January 1, 2015 to March 31, 2015:


	Opening Balance at January 1	$	22,718
	Increase related to prior year tax positions, including recorded in acquisition accounting		2
	Decrease related to prior year tax positions		(346	)
	Effect of exchange rate changes		(5	)

	Closing Balance at March 31	$	22,369

	The Company’s unrecognized tax benefits as of March 31, 2015 include an amount of $20,927 which, if recognized, would impact the effective tax rate. As of December 31, 2014 and March 31, 2015, the Company has accrued approximately $3,417 and $3,582, respectively, for interest relating to unrecognized tax benefits. During the year ended December 31, 2014 and the three months ended March 31, 2015, the company recognized approximately $44 and $165, respectively, in interest expense. As of December 31, 2014 and March 31, 2015, the Company has accrued approximately $561 and $557, respectively, for penalties.

Related_party_transactions

Related party transactions	3 Months Ended
Related party transactions	Mar. 31, 2015
Related party transactions	23. Related party transactions

	The Company has entered into related party transactions with its non-consolidating affiliates. The Company has also entered into related party transactions with a significant shareholder and its affiliates.

	The Company’s related party transactions can be categorized as follows:

	Revenue from services

	During the three months ended March 31, 2014 and March 31, 2015, the Company recognized net revenues of $71 and $99, respectively, from a client which is a significant shareholder of the Company.

	During the three months ended March 31, 2015, the Company recognized net revenues of $2,039 from a client which is one of the non-consolidating affiliates of the Company. This amount is receivable as of March 31, 2015.



	Cost of revenue from services

	The Company purchases certain services from its non-consolidating affiliates mainly relating to training and recruitment, the costs of which are included in cost of revenue. For the three months ended March 31, 2014 and 2015, cost of revenue includes an amount of $533 and $390, respectively.

	Selling, general and administrative expenses

	The Company purchases certain services from its non-consolidating affiliates mainly relating to training and recruitment, the costs of which are included in selling, general and administrative expenses. For the three months ended March 31, 2014 and 2015, selling, general and administrative expenses includes an amount of $137 and $95, respectively. Further, during the three months ended March 31, 2015, the Company entered into transactions with a significant shareholder of the Company amounting to $399 and $1,299 is outstanding as of March 31, 2015.

	Investment in equity affiliates

	During the three months ended March 31, 2015, the Company invested $4,777 in its non-consolidating affiliates and made payments of $6,701, of which $5,146 was outstanding as of December 31, 2014 and $1,555 represents investments made during the first quarter of 2015. As of March 31, 2015, an investment amounting to $3,222 is outstanding and has been included in accrued expenses and other current liabilities in the Company’s consolidated balance sheet.

	As of December 31, 2014 and March 31, 2015, the Company’s investment in its non-consolidating affiliates amounted to $494 and $3,050, respectively.

	Others

	The Company has also entered into transactions with one of its non-consolidating affiliates for certain cost reimbursements amounting to $1,744 that are receivable and have been included in prepaid expenses and other current assets in the consolidated balance sheet as of March 31, 2015.

Commitments_and_contingencies

Commitments and contingencies	3 Months Ended
Commitments and contingencies	Mar. 31, 2015
Commitments and contingencies	24. Commitments and contingencies
	Capital commitments
	As of December 31, 2014 and March 31, 2015, the Company has committed to spend $6,073 and $4,592, respectively, under agreements to purchase property, plant and equipment. This amount is net of capital advances paid in respect of such purchases.
	Bank guarantees
	The Company has outstanding bank guarantees amounting to $10,362 and $10,590 as of December 31, 2014 and March 31, 2015, respectively. Bank guarantees are generally provided to government agencies and excise and customs authorities for the purposes of maintaining a bonded warehouse. These guarantees may be revoked by the government agencies if they suffer any losses or damage through the breach of any of the covenants contained in the agreements governing such guarantees.
	Other commitments
	The Company’s business process delivery centers in India are 100% export oriented units or Software Technology Parks of India units (“STPI”) under the STPI guidelines issued by the Government of India. These units are exempt from customs, central excise duties, and levies on imported and indigenous capital goods, stores, and spares. The Company has undertaken to pay custom duties, service taxes, levies, and liquidated damages payable, if any, in respect of imported and indigenous capital goods, stores, and spares consumed duty free, in the event that certain terms and conditions are not fulfilled.

Subsequent_Event

Subsequent Event	3 Months Ended
Subsequent Event	Mar. 31, 2015
Subsequent Event	25. Subsequent Event

	Pursuant to its share repurchase program, the Company repurchased approximately 1,117,625 of its common shares between April 1, 2015 and May 8, 2015, at a weighted average price of approximately $22.56 per share for an aggregate cash amount of approximately $25,216.

Summary_of_significant_account1

Summary of significant accounting policies (Policies)	3 Months Ended
	Mar. 31, 2015
Basis of preparation and principles of consolidation	(a) Basis of preparation and principles of consolidation
	The unaudited interim consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) for interim financial information and the rules and regulations of the Securities and Exchange Commission for reporting on Form 10-Q. Accordingly, they do not include certain information and note disclosures required by generally accepted accounting principles for annual financial reporting and should be read in conjunction with the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.
	The unaudited interim consolidated financial statements reflect all adjustments that management considers necessary for a fair presentation of the results of operations for these periods. The results of operations for the interim periods are not necessarily indicative of the results for the full year.

	The accompanying unaudited interim consolidated financial statements have been prepared on a consolidated basis and reflect the financial statements of Genpact Limited, a Bermuda company, and all of its subsidiaries that are more than 50% owned and controlled. When the Company does not have a controlling interest in an entity but exerts significant influence on the entity, the Company applies the equity method of accounting. All intercompany transactions and balances are eliminated in consolidation.
	The noncontrolling interest disclosed in the accompanying unaudited interim consolidated financial statements represents the noncontrolling partners’ interest in the operation of Genpact Netherlands B.V. and the profits or losses associated with such noncontrolling interest. The noncontrolling partners of Genpact Netherlands B.V. are individually liable for the tax obligations on their shares of profit as it is a partnership. Accordingly, noncontrolling interest relating to Genpact Netherlands B.V. has been computed prior to tax and disclosed accordingly in the unaudited interim Consolidated Statements of Income. During the year ended December 31, 2014, the Company purchased such noncontrolling interest, as a result of which the Company has 100% control of the partnership.
Use of estimates	(b) Use of estimates
	The preparation of consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements. Significant items subject to such estimates and assumptions include the useful lives of property, plant and equipment, the carrying amount of property, plant and equipment, intangibles and goodwill, reserves for doubtful receivables, valuation allowances for deferred tax assets, the valuation of derivative financial instruments, measurements of stock-based compensation, assets and obligations related to employee benefits, and income tax uncertainties and other contingencies. Management believes that the estimates used in the preparation of the consolidated financial statements are reasonable. Although these estimates are based upon management’s best knowledge of current events and actions, actual results could differ from these estimates. Any changes in estimates are adjusted prospectively in the Company’s consolidated financial statements.
Business combinations	(c) Business combinations, goodwill and other intangible assets
	The Company accounts for its business combinations using the acquisition method of accounting in accordance with ASC 805, Business Combinations, by recognizing the identifiable tangible and intangible assets acquired, liabilities assumed, and any noncontrolling interest in the acquired business, measured at their acquisition date fair values. Contingent consideration is included within the acquisition cost and is recognized at its fair value on the acquisition date. A liability resulting from contingent consideration is remeasured to fair value as of each reporting date until the contingency is resolved. Changes in fair value are recognized in earnings. All assets and liabilities of the acquired businesses, including goodwill, are assigned to reporting units. Acquisition related costs are expensed as incurred under Selling, General and Administrative Expenses.
	In business combinations, where the fair value of identifiable tangible and intangible net assets purchased exceeds the cost of the acquired business, the Company recognizes the resulting gain under “Other operating (income) expense, net” in the Consolidated Statements of Income.
Goodwill	Goodwill represents the cost of acquired businesses in excess of the fair value of identifiable tangible and intangible net assets purchased. Goodwill is not amortized but is tested for impairment at least on an annual basis on December 31, based on a number of factors, including operating results, business plans and future cash flows. The Company performs an assessment of qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. Based on the assessment of events or circumstances, the Company performs the quantitative assessment of goodwill impairment if it determines that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, based on the quantitative impairment analysis, the carrying value of the goodwill of the reporting unit exceeds the fair value of that goodwill, an impairment loss is recognized in an amount equal to the excess. In addition, the Company performs the qualitative assessment of goodwill impairment between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit below its carrying amount. See Note 10 for information and related disclosures.
Intangible Assets	Intangible assets acquired individually or with a group of other assets or in a business combination are carried at cost less accumulated amortization based on their estimated useful lives as follows:


	Customer-related intangible assets	1-14 years
	Marketing-related intangible assets	1-10 years
	Other intangible assets	3-9 years
	Intangible assets are amortized over their estimated useful lives using a method of amortization that reflects the pattern in which the economic benefits of the intangible assets are consumed or otherwise realized.
Financial instruments and concentration of credit risk	(d) Financial instruments and concentration of credit risk
	Financial instruments that potentially subject the Company to concentration of credit risk are reflected principally in cash and cash equivalents, short term deposits, derivative financial instruments and accounts receivable. The Company places its cash and cash equivalents and derivative financial instruments with corporations and banks with high investment grade ratings, limits the amount of credit exposure with any one corporation or bank and conducts ongoing evaluations of the creditworthiness of the corporations and banks with which it does business. To reduce its credit risk on accounts receivable, the Company conducts ongoing credit evaluations of its clients. GE accounted for 25% and 22% of receivables as of December 31, 2014 and March 31, 2015, respectively. GE accounted for 21% and 19% of revenues for the three months ended March 31, 2014 and 2015, respectively.
Recently adopted accounting pronouncements	(e) Recently adopted accounting pronouncements
	There are no recent accounting pronouncements issued by authoritative bodies that have been adopted by the Company.

Summary_of_significant_account2

Summary of significant accounting policies (Tables)	3 Months Ended
Summary of significant accounting policies (Tables)	Mar. 31, 2015
Estimated Useful Lives of Intangible Assets Acquired	Intangible assets acquired individually or with a group of other assets or in a business combination are carried at cost less accumulated amortization based on their estimated useful lives as follows:


	Customer-related intangible assets	1-14 years
	Marketing-related intangible assets	1-10 years
	Other intangible assets	3-9 years

Business_acquisitions_and_dive1

Business acquisitions and divestitures (Tables)	3 Months Ended
Business acquisitions and divestitures (Tables)	Mar. 31, 2015
Japan Finance and Accounting Service Delivery
Purchase Consideration for the Acquisition	The purchase consideration for the acquisition is set forth below:


	Cash consideration after preliminary adjustment for pension underfunding and closing net assets value	$	10,599
	Fair value of contingent earn-out consideration (ranging from $0 to $15,750)		11,198
	Total preliminary estimated purchase consideration	$	21,797
Business Acquisition Purchase Price Determination	The following table summarizes the initial allocation of the preliminary estimated purchase price based on the fair value of the assets acquired and the liabilities assumed as of the date of the acquisition:


	Preliminary estimated purchase price	$	21,797
	Acquisition related costs included in selling, general and administrative expenses as incurred		796
	Recognized amounts of identifiable assets acquired and liabilities assumed
	Net assets acquired		(323	)
	Customer related intangible assets		7,522
	Deferred tax asset/(liability), net		(2,496	)
	Total identifiable net assets acquired	$	4,703
	Goodwill		17,094
	Total	$	21,797
Pharmalink Consulting Inc
Purchase Consideration for the Acquisition	The purchase consideration for the acquisition is set forth below:


	Cash consideration after preliminary adjustment for net debt and working capital	$	125,901
	Fair value of contingent earn-out consideration (ranging from $0 to $27,405)		12,730
	Total preliminary estimated purchase consideration	$	138,631
Purchase Price Allocation Based on Fair Value of Assets Acquired and Liabilities Assumed	The following table summarizes the preliminary allocation of the preliminary estimated purchase price based on the fair value of the assets acquired and the liabilities assumed as of the date of acquisition including measurement period adjustments:


	Preliminary estimated purchase price	$	138,631
	Acquisition related costs included in selling, general and administrative expenses as incurred		1,977

	Recognized amounts of identifiable assets acquired and liabilities assumed

	Net assets acquired		7,174
	Intangible assets		29,923
	Deferred tax asset/(liability), net		(8,419	)
	Total identifiable net assets acquired	$	28,678
	Goodwill		109,953
	Total	$	138,631

Cash_and_cash_equivalents_Tabl

Cash and cash equivalents (Tables)	3 Months Ended
Cash and cash equivalents (Tables)	Mar. 31, 2015
Cash And Cash Equivalents	Cash and cash equivalents as of December 31, 2014 and March 31, 2015 comprise:


		As of December 31,		As of March 31,
		2014		2015
	Deposits with banks	$	130,610	$	96,737
	Other cash and bank balances		331,178		337,573

	Total	$	461,788	$	434,310

Accounts_receivable_net_of_res1

Accounts receivable, net of reserve for doubtful receivables (Tables)	3 Months Ended
	Mar. 31, 2015
Reserve for Doubtful Receivables	The following table provides details of the reserve for doubtful receivables recorded by the Company:


		Year ended December 31,			Three months ended
		2014			March 31, 2015
	Opening Balance as of January 1	$	16,560		$	15,192
	Additions due to acquisitions		178			—
	Additions charged to cost and expense		3,107			872
	Deductions		(4,653	)		(137	)

	Closing Balance		15,192			15,927

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
Fair Value Measurements (Tables)	Mar. 31, 2015
Fair Value of Assets and Liabilities Measured on Recurring Basis	The Company measures certain financial assets and liabilities, including derivative instruments, at fair value on a recurring basis. The fair value measurements of these derivative instruments were determined using the following inputs as of December 31, 2014 and March 31, 2015:


			As of December 31, 2014
			Fair Value Measurements at Reporting Date Using
					Quoted Prices in		Significant Other		Significant Other
					Active Markets for		Observable Inputs		Unobservable
					Identical Assets				Inputs
			Total		(Level 1)		(Level 2)		(Level 3)
	Assets
	Derivative instruments (Note a)		$	33,967	$	—	$	33,967	$	—

	Total		$	33,967	$	—	$	33,967	$	—

	Liabilities
	Derivative instruments (Note b)		$	101,516	$	—	$	101,516	$	—

	Total		$	101,516	$	—	$	101,516	$	—


			As of March 31, 2015
			Fair Value Measurements at Reporting Date Using
					Quoted Prices in		Significant Other		Significant Other
					Active Markets for		Observable Inputs		Unobservable
					Identical Assets				Inputs
			Total		(Level 1)		(Level 2)		(Level 3)
	Assets
	Derivative instruments (Note a)		$	52,904	$	—	$	52,904	$	—

	Total		$	52,904	$	—	$	52,904	$	—

	Liabilities
	Derivative instruments (Note b)		$	85,559	$	—	$	85,559	$	—

	Total		$	85,559	$	—	$	85,559	$	—


	(a)	Included in prepaid expenses and other current assets and other assets in the consolidated balance sheets.
	(b)	Included in accrued expenses and other current liabilities and other liabilities in the consolidated balance sheets.

Derivative_financial_instrumen1

Derivative financial instruments (Tables)	3 Months Ended
Derivative financial instruments (Tables)	Mar. 31, 2015
Aggregate Notional Principal Amounts of Outstanding Derivative Financial Instruments with Related Balance Sheet Exposure	The following table presents the aggregate notional principal amounts of outstanding derivative financial instruments together with the related balance sheet exposure:


			Notional principal amounts								Balance sheet exposure asset (liability)
			(note a)								(note b)
			As of December 31,				As of March 31,				As of December 31,				As of March 31,
			2014				2015				2014				2015
	Foreign exchange forward contracts denominated in:
	United States Dollars (sell) Indian Rupees (buy)		$	1,282,800			$	1,447,300			$	(86,913	)		$	(72,126	)
	United States Dollars (sell) Mexican Peso (buy)			5,640				17,250				(514	)			(1,012	)
	United States Dollars (sell) Philippines Peso (buy)			72,900				72,900				(738	)			(444	)
	Euro (sell) United States Dollars (buy)			98,903				109,774				5,458				15,756
	Euro (sell) Romanian Leu (buy)			81,072				67,667				562				1,989
	Japanese Yen (sell) Chinese Renminbi (buy)			28,586				34,956				2,766				2,281
	Pound Sterling (sell) United States Dollars (buy)			133,435				117,920				4,278				9,530
	Australian Dollars (sell) United States Dollars (buy)			104,362				94,891				7,552				11,371

											$	(67,549	)		$	(32,655	)


	(a)	Notional amounts are key elements of derivative financial instrument agreements but do not represent the amount exchanged by counterparties and do not measure the Company’s exposure to credit or market risks. However, the amounts exchanged are based on the notional amounts and other provisions of the underlying derivative financial instrument agreements.
	(b)	Balance sheet exposure is denominated in U.S. dollars and denotes the mark-to-market impact of the derivative financial instruments on the reporting date.
Fair Value of Derivative Instruments and Location in Financial Statements	The fair value of the derivative instruments and their location in the Company’s financial statements are summarized in the table below:


			Cash flow hedges								Non-designated
			As of December 31,				As of March 31,				As of December 31,				As of March 31,
			2014				2015				2014				2015
	Assets
	Prepaid expenses and other current assets		$	16,636			$	28,036			$	202			$	508
	Other assets		$	17,129			$	24,360			$	—			$	—
	Liabilities
	Accrued expenses and other current liabilities		$	64,650			$	48,941			$	965			$	195
	Other liabilities		$	35,901			$	36,423			$	—			$	—
Cash Flow Hedges, Gains (Losses) Recorded as Component of Other Comprehensive Income (Loss) or Other Comprehensive Income	In connection with cash flow hedges, the gains (losses) recorded as a component of other comprehensive income (loss), or OCI, and the related tax effects are summarized below:


			Three months ended March 31,
			2014												2015
			Before-Tax				Tax				Net of tax				Before-Tax				Tax			Net of tax
			amount				(Expense) or				Amount				amount				(Expense) or			Amount
							Benefit												Benefit
	Opening balance as of January 1		$	(205,952	)		$	72,612			$	(133,340	)		$	(66,786	)		$	23,646		$	(43,140	)

	Net gains (losses) reclassified into statement of income on completion of hedged transactions			(12,400	)			4,356				(8,044	)			(9,254	)			3,251			(6,003	)
	Changes in fair value of effective portion of outstanding derivatives, net			47,238				(17,290	)			29,948				24,564				(8,734	)		15,830

	Gain (loss) on cash flow hedging derivatives, net			59,638				(21,646	)			37,992				33,818				(11,985	)		21,833

	Closing balance as of March 31		$	(146,314	)		$	50,966			$	(95,348	)		$	(32,968	)		$	11,661		$	(21,307	)

Gains (Losses) Recorded as Component of Other Comprehensive Income (Loss) or Other Comprehensive Income	Gains or losses recognized in other comprehensive income (loss) and their effects on financial performance are summarized below:


	Derivatives in Cash Flow		Amount of Gain								Location of Gain		Amount of Gain								Location of Gain	Amount of Gain (Loss)
	Hedging Relationships		(Loss) recognized in								(Loss) reclassified from		(Loss) reclassified								(Loss) recognized in	recognized in income on
			OCI on Derivatives								OCI into Statement of		from OCI into								Income on	Derivatives (Ineffective
			(Effective Portion)								Income (Effective		Statement of Income								Derivatives	Portion and Amount
											Portion)		(Effective Portion)								(Ineffective Portion	excluded from
																					and Amount	Effectiveness Testing)
																					excluded from
																					Effectiveness
			Three months ended										Three months ended								Testing)	Three months ended
			March 31,										March 31,									March 31,
			2014				2015						2014				2015					2014			2015
	Forward foreign exchange contracts		$	47,238			$	24,564			Revenue		$	(670	)		$	2,495			Foreign exchange	$	—		$	—
																					(gains) losses,
																					net
											Cost of revenue			(9,398	)			(9,427	)
											Selling, general and			(2,332	)			(2,322	)
											administrative
											expenses

			$	47,238			$	24,564					$	(12,400	)		$	(9,254	)			$	—		$	—

	Non-designated Hedges


	Derivatives not		Location of (Gain) Loss		Amount of (Gain) Loss
	designated as hedging		recognized in Statement of		recognized in Statement of
	instruments		Income on Derivatives		Income on Derivatives
					Three months ended
					March 31,
					2014				2015
	Forward foreign exchange contracts (Note a)		Foreign exchange (gains) losses, net		$	(27	)		$	(2,244	)

					$	(27	)		$	(2,244	)


	(a)	These forward foreign exchange contracts were entered into to hedge the fluctuations in foreign exchange rates for recognized balance sheet items such as receivables and intercompany borrowings, and were not originally designated as hedges under FASB guidance on derivatives and hedging. Realized (gains) losses and changes in the fair value of these derivatives are recorded in foreign exchange (gains) losses, net in the consolidated statements of income.

Prepaid_expenses_and_other_cur1

Prepaid expenses and other current assets (Tables)	3 Months Ended
Prepaid expenses and other current assets (Tables)	Mar. 31, 2015
Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets consist of the following:


		As of December 31,		As of March 31,
		2014		2015
	Advance taxes	$	61,251	$	76,915
	Deferred transition costs		40,185		36,148
	Derivative instruments		16,838		28,544
	Employee advances		5,816		5,084
	Advances to suppliers		3,358		1,440
	Prepaid expenses		12,949		15,775
	Customer Acquisition Cost		5,557		5,919
	Deposits		1,754		2,817
	Others		7,772		8,276

		$	155,480	$	180,918

Property_plant_and_equipment_n1

Property, plant and equipment, net (Tables)	3 Months Ended
Property, plant and equipment, net (Tables)	Mar. 31, 2015
Property, plant and equipment, net	Property, plant and equipment, net consist of the following:


		As of December 31,			As of March 31,
		2014			2015
	Property, plant and equipment, gross	$	531,960		$	540,629
	Less: Accumulated depreciation and amortization		(356,024	)		(367,053	)

	Property, plant and equipment, net	$	175,936		$	173,576

Goodwill_and_intangible_assets1

Goodwill and intangible assets (Tables)	3 Months Ended
Goodwill and intangible assets (Tables)	Mar. 31, 2015
Changes in Goodwill	The following table presents changes in goodwill for the year ended December 31, 2014 and three months ended March 31, 2015:


		Year ended			Three months ended
		December 31, 2014			March 31, 2015
	Opening balance	$	953,849		$	1,057,214
	Goodwill relating to acquisitions consummated during the period		127,047			3,400
	Effect of exchange rate fluctuations		(23,682	)		(8,116	)

	Closing balance	$	1,057,214		$	1,052,498

Intangible Assets Acquired Either Individually or with Group of Other Assets or in Business Combination	The Company’s intangible assets acquired either individually or with a group of other assets or in a business combination are as follows:


		As of December 31, 2014								As of March 31, 2015
		Gross			Accumulated			Net		Gross		Accumulated		Net
		carrying			amortization					carrying		amortization
		amount								amount
	Customer-related intangible assets	$	310,069		$	228,095		$	81,974	$	317,795	$	233,693	$	84,102
	Marketing-related intangible assets		43,137			23,801			19,336		43,061		24,585		18,476
	Other intangible assets		19,002			5,768			13,234		20,865		6,157		14,708

		$	372,208		$	257,664		$	114,544	$	381,721	$	264,435	$	117,286

Longterm_debt_Tables

Long-term debt (Tables)	3 Months Ended
Long-term debt (Tables)	Mar. 31, 2015
Maturity Profile of Term Loan, Net of Debt Amortization Expense	The maturity profile of the term loan, net of debt amortization expense, is as follows:


	Year ended	Amount
	2015	$	3,210
	2016		4,306
	2017		4,338
	2018		4,363
	2019		636,305

		$	652,522

Accrued_expenses_and_other_cur1

Accrued expenses and other current liabilities (Tables)	3 Months Ended
Accrued expenses and other current liabilities (Tables)	Mar. 31, 2015
Accrued Expenses and Other Current Liabilities
		As of December 31,		As of March 31,
		2014		2015
	Accrued expenses	$	114,770	$	110,652
	Accrued employee cost		143,829		86,378
	Deferred transition revenue		49,792		45,585
	Statutory liabilities		24,713		28,886
	Retirement benefits		16,807		20,099
	Derivative instruments		65,615		49,136
	Advance from customers		19,857		22,711
	Earn-out consideration		3,232		3,211
	Other liabilities		12,399		9,869

		$	451,014	$	376,527

Employee_benefit_plans_Tables

Employee benefit plans (Tables)	3 Months Ended
Employee benefit plans (Tables)	Mar. 31, 2015
Net Defined Benefit Plan Costs	Net defined benefit plan costs for the three months ended March 31, 2014 and 2015 include the following components:


		Three months ended March 31,
		2014			2015
	Service costs	$	1,190		$	1,384
	Interest costs		619			678
	Amortization of actuarial loss		78			85
	Expected return on plan assets		(447	)		(549	)

	Net Gratuity Plan costs	$	1,440		$	1,598

Amount Contributed to Defined Contribution Plans in Various Jurisdictions	During the three months ended March 31, 2014 and 2015, the Company contributed the following amounts to defined contribution plans in various jurisdictions:


		Three months ended March 31,
		2014			2015
	India	$	3,575		$	3,909
	U.S.		1,591			2,628
	U.K.		545			1,040
	China		3,537			3,516
	Other Regions		1,186			1,106

	Total		10,434			12,199

Stockbased_compensation_Tables

Stock-based compensation (Tables)	3 Months Ended
Stock-based compensation (Tables)	Mar. 31, 2015
Share-based Payment Award, Stock Options Granted, Valuation Assumptions	The following table shows the significant assumptions used in connection with the determination of the fair value of options granted in the three months ended March 31, 2015. No options were granted in the three months ended March 31, 2014.


			Three months ended March 31, 2015
	Dividend yield			—
	Expected life (in months)			84
	Risk free rate of interest for expected life			1.99	%
	Volatility			34.97	%
Summary of Stock Option Activity	A summary of stock option activity during the three months ended March 31, 2015 is set out below:


			Three months ended March 31, 2015
			Shares arising			Weighted average		Weighted average			Aggregate
			out of options			exercise price		remaining			intrinsic
								contractual life			value
								(years)
	Outstanding as of January 1, 2015			7,371,727		$	15.44		5.9		$	—
	Granted			170,000			22.77		—			—
	Forfeited			—			—		—			—
	Expired			—			—		—			—
	Exercised			(659,257	)		8.86		—			9,487

	Outstanding as of March 31, 2015			6,882,470		$	16.26		6.1		$	48,967

	Vested as of March 31, 2015 and expected to vest thereafter (Note a)			6,578,643		$	15.99		6.1		$	47,743
	Vested and Exercisable as of March 31, 2015			2,883,564		$	11.94		3		$	32,599
	Weighted average grant date fair value of grants made during the period		$	9.15

		(a)	Options expected to vest reflect an estimated forfeiture rate.
Summary of Restricted Share Units Granted	A summary of RSUs granted during the three months ended March 31, 2015 is set out below:


			Three months ended March 31, 2015
			Number of Restricted Share			Weighted Average Grant Date
			Units			Fair Value
	Outstanding as of January 1, 2015			488,418		$	15.36
	Granted			—			—
	Vested (Note a)			(8,942	)		14.32
	Forfeited			(12,422	)		13.93

	Outstanding as of March 31, 2015			467,054		$	15.41

	Expected to vest (Note b)			439,485

	(a)	Vested RSUs have been net settled upon vesting by issuing 5,417 shares (net of minimum statutory tax withholding).
	(b)	RSUs expected to vest reflect an estimated forfeiture rate.
Summary of Performance Units Activity	A summary of PU activity during the three months ended March 31, 2015 is set out below:


			Three months ended March 31, 2015
			Number of			Weighted		Maximum Shares
			Performance Units			Average Grant		Eligible to Receive
						Date Fair Value
	Outstanding as of January 1, 2015			1,292,750		$	16.78		2,648,626
	Granted			562,000			22.77		1,405,000
	Vested			—			—		—
	Forfeited			(16,350	)		16.78		(24,525	)
	Addition due to achievement of higher than target performance goals (Note a)			51,595			16.78
	Reduction due to achievement of lower than maximum performance goals (Note b)								(1,296,105	)

	Outstanding as of March 31, 2015			1,889,995		$	18.56		2,732,996

	Expected to vest (Note c)			1,588,070

	(a)	Represents additional shares awarded ranging from 0.8% to 6.6% of the target shares as a result of the achievement of higher-than-target performance for the PUs granted in April 2014.
	(b)	Represents a 143.4% and 49.2% reduction in the maximum shares eligible to vest as a result of the certification of the level of achievement of the performance goals for the PUs granted in April 2014.
	(c)	PUs expected to vest are based on the probable achievement of the performance targets after considering an estimated forfeiture rate.
	(d)	1,329,270 PUs granted in March 2012 vested as of December 31, 2014 based on the compensation committee’s certification of the achievement of the performance goals for the performance period based on the Company’s audited financial statements. Shares in respect of such PUs were issued in January 2015 (845,524 shares after withholding shares to the extent of the minimum statutory withholding taxes).

Earnings_per_share_Tables

Earnings per share (Tables)	3 Months Ended
Earnings per share (Tables)	Mar. 31, 2015
Earnings Per Share
		Three months ended March 31,
		2014		2015
	Net income available to Genpact Limited common shareholders	$	50,613	$	44,653
	Weighted average number of common shares used in computing basic earnings per common share		232,093,917		219,892,695
	Dilutive effect of stock-based awards		5,181,734		2,454,406

	Weighted average number of common shares used in computing dilutive earnings per common share		237,275,651		222,347,101

	Earnings per common share attributable to Genpact Limited common shareholders
	Basic	$	0.22	$	0.2
	Diluted	$	0.21	$	0.2

Cost_of_revenue_Tables

Cost of revenue (Tables)	3 Months Ended
Cost of revenue (Tables)	Mar. 31, 2015
Cost of Revenue	Cost of revenue consists of the following:


		Three months ended March 31,
		2014		2015
	Personnel expenses	$	227,027	$	242,948
	Operational expenses		86,421		102,797
	Depreciation and amortization		10,841		11,731

		$	324,289	$	357,476

Selling_general_and_administra1

Selling, general and administrative expenses (Tables)	3 Months Ended
Selling, general and administrative expenses (Tables)	Mar. 31, 2015
Selling, General and Administrative Expenses	Selling, general and administrative expenses consist of the following:


		Three months ended March 31,
		2014		2015
	Personnel expenses	$	89,506	$	105,838
	Operational expenses		30,929		40,562
	Depreciation and amortization		2,063		2,348

		$	122,498	$	148,748

Other_operating_income_expense1

Other operating (income) expense, net (Tables)	3 Months Ended
Other operating (income) expense, net (Tables)	Mar. 31, 2015
Other Operating (Income) Expense, Net
		Three months ended March 31,
		2014			2015
	Other operating (income) expense	$	(220	)	$	(462	)
	Change in fair value of earn out consideration and deferred consideration (relating to business acquisitions)		(1,642	)		—

	Other operating (income) expense, net	$	(1,862	)	$	(462	)

Other_income_expense_net_Table

Other income (expense), net (Tables)	3 Months Ended
Other income (expense), net (Tables)	Mar. 31, 2015
Other Income (Expense), Net	Other income (expense), net consists of the following:


		Three months ended March 31,
		2014			2015
	Interest income	$	1,359		$	1,196
	Interest expense		(7,761	)		(10,221	)
	Other income (expense)		(131	)		458

	Other income (expense), net	$	(6,533	)	$	(8,567	)

Income_taxes_Tables

Income taxes (Tables)	3 Months Ended
Income taxes (Tables)	Mar. 31, 2015
Activities Related to Unrecognized Tax Benefits for Uncertain Tax Positions	The following table summarizes activities related to the Company’s unrecognized tax benefits for uncertain tax positions from January 1, 2015 to March 31, 2015:


	Opening Balance at January 1	$	22,718
	Increase related to prior year tax positions, including recorded in acquisition accounting		2
	Decrease related to prior year tax positions		(346	)
	Effect of exchange rate changes		(5	)

	Closing Balance at March 31	$	22,369

Organization_Additional_Inform

Organization - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended	1 Months Ended
In Thousands, except Share data, unless otherwise specified	Aug. 30, 2012	Mar. 31, 2015	Aug. 31, 2007	Aug. 01, 2012	Dec. 14, 2012	Mar. 24, 2010	Dec. 31, 2012
Organization [Line Items]
Number of years of service		16 years
Common stock shares to be purchased by affiliates of Bain Capital Partners				67,750,678
Termination of credit facility	$380,000
New credit facility agreement	$925,000
Special cash dividend, per share declared	$2.24
IPO
Organization [Line Items]
Number of common shares sold			17,647,059
General Atlantic
Organization [Line Items]
Percent of ownership held					2.40%
Oak Hill Capital Partners
Organization [Line Items]
Percent of ownership held					2.40%
General Electric Company
Organization [Line Items]
Percent of ownership held						9.10%
Maximum \| General Electric Company
Organization [Line Items]
Percent of ownership held							5.00%
Fortune Global 500 \| Minimum
Organization [Line Items]
Number of clients		125

Recovered_Sheet1

Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
General Electric Company
Schedule Of Significant Accounting Policies [Line Items]
Percentage of accounts receivables	22.00%		25.00%
Percentage of revenues	19.00%	21.00%
Genpact Netherlands BV
Schedule Of Significant Accounting Policies [Line Items]
Ownership interest			100.00%

Estimated_Useful_Lives_of_Inta

Estimated Useful Lives of Intangible Assets Acquired (Detail)	3 Months Ended
	Mar. 31, 2015
Customer-Related Intangible Assets \| Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	1 year
Customer-Related Intangible Assets \| Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	14 years
Marketing-Related Intangible Assets \| Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	1 year
Marketing-Related Intangible Assets \| Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	10 years
Other Intangible Assets \| Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	3 years
Other Intangible Assets \| Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	9 years

Recovered_Sheet2

Business Acquisitions and Divestitures - Additional Information (Detail) (USD $)	3 Months Ended	0 Months Ended
	Mar. 31, 2015	Nov. 04, 2014	29-May-14	Jan. 16, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Goodwill	$1,052,498,000				$1,057,214,000	$953,849,000
Payment for business acquisitions, net of cash acquired	11,678,000
Japan Finance and Accounting Service Delivery
Business Acquisition [Line Items]
Customer related intangible assets		7,522,000
Acquired intangible assets, weighted average amortization period		7 years
Goodwill		17,094,000
Cash and cash equivalents		3,491,000
Payment for business acquisitions, net of cash acquired		7,108,000
Tax benefit for amortization	0
Pharmalink Consulting Inc
Business Acquisition [Line Items]
Customer related intangible assets			29,923,000
Acquired intangible assets, weighted average amortization period			6 years
Goodwill			109,953,000
Cash and cash equivalents			2,200,000
Payment for business acquisitions, net of cash acquired			123,701,000
Percentage of equity interest acquired			100.00%
Non-current liability					585,000
Citibank NA \| Wealth Management Business
Business Acquisition [Line Items]
Cash consideration to acquired certain assets and assumed certain liabilities				11,678,000
Contingent consideration arrangements				0
Customer related intangible assets				9,100,000
Acquired intangible assets, weighted average amortization period				5 years
Goodwill				3,400,000
Liabilities assumed				822,000
Acquisition related cost				$798,000

Purchase_Consideration_for_Acq

Purchase Consideration for Acquisition, Japan Finance and Accounting Service Delivery (Detail) (Japan Finance and Accounting Service Delivery, USD $)	Nov. 04, 2014
In Thousands, unless otherwise specified	Nov. 04, 2014
Japan Finance and Accounting Service Delivery
Business Acquisition [Line Items]
Cash consideration after preliminary adjustment for pension	$10,599
Fair value of contingent earn-out consideration (ranging from $0 to $15,750)	11,198
Total preliminary estimated purchase consideration	$21,797

Purchase_Consideration_for_Acq1

Purchase Consideration for Acquisition, Japan Finance and Accounting Service Delivery (Parenthetical) (Detail) (Japan Finance and Accounting Service Delivery, USD $)	Nov. 04, 2014
In Thousands, unless otherwise specified	Nov. 04, 2014
Japan Finance and Accounting Service Delivery
Business Acquisition [Line Items]
Contingent earn-out component-Low end	$0
Contingent earn-out component-High end	$15,750

Purchase_Price_Allocated_Based

Purchase Price Allocated Based on Fair Value of Assets Acquired and Liabilities Assumed, Japan Finance and Accounting Service Delivery (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Nov. 04, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Nov. 04, 2014
Recognized amounts of identifiable assets acquired and liabilities assumed
Goodwill	$1,052,498	$1,057,214	$953,849
Japan Finance and Accounting Service Delivery
Business Acquisition [Line Items]
Preliminary estimated purchase price				21,797
Acquisition related costs included in selling, general and administrative expenses as incurred				796
Recognized amounts of identifiable assets acquired and liabilities assumed
Net assets acquired				-323
Customer related intangible assets				7,522
Deferred tax asset/(liability), net				-2,496
Total identifiable net assets acquired				4,703
Goodwill				17,094
Total				$21,797

Purchase_Consideration_for_Acq2

Purchase Consideration for Acquisition (Detail) (Pharmalink Consulting Inc, USD $)	29-May-14
In Thousands, unless otherwise specified	29-May-14
Pharmalink Consulting Inc
Business Acquisition [Line Items]
Cash consideration after preliminary adjustment for net debt and working capital	$125,901
Fair value of contingent earn-out consideration	12,730
Total	$138,631

Purchase_Consideration_for_Acq3

Purchase Consideration for Acquisition (Parenthetical) (Detail) (Pharmalink Consulting Inc, USD $)	29-May-14
In Thousands, unless otherwise specified	29-May-14
Pharmalink Consulting Inc
Business Acquisition [Line Items]
Contingent earn-out component-Low end	$0
Contingent earn-out component-High end	$27,405

Purchase_Price_Allocated_Based1

Purchase Price Allocated Based on Fair Value of Assets Acquired and Liabilities Assumed, Pharmalink (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	29-May-14
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	29-May-14
Recognized amounts of identifiable assets acquired and liabilities assumed
Goodwill	$1,052,498	$1,057,214	$953,849
Pharmalink Consulting Inc
Business Acquisition [Line Items]
Preliminary estimated purchase price				138,631
Acquisition related costs included in selling, general and administrative expenses as incurred				1,977
Recognized amounts of identifiable assets acquired and liabilities assumed
Net assets acquired				7,174
Intangible assets				29,923
Deferred tax asset/(liability), net				-8,419
Total identifiable net assets acquired				28,678
Goodwill				109,953
Total				$138,631

Cash_and_Cash_Equivalents_Deta

Cash and Cash Equivalents (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Cash and Cash Equivalents [Line Items]
Deposits with banks	$96,737	$130,610
Other cash and bank balances	337,573	331,178
Total	$434,310	$461,788	$567,266	$571,276

Reserve_for_Doubtful_Receivabl

Reserve for Doubtful Receivables (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Provisions for Doubtful Accounts [Line Items]
Opening Balance	$15,192	$16,560	$16,560
Additions due to acquisitions			178
Additions charged to cost and expense	872	197	3,107
Deductions	-137		-4,653
Closing Balance	$15,927		$15,192

Recovered_Sheet3

Accounts Receivable, Net of Reserve for Doubtful Receivables - Additional Information (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross accounts receivable	$545,545,000	$540,946,000
Reserve for doubtful receivables	15,927,000	15,192,000	16,560,000
Net accounts receivable	529,618,000	525,754,000
Accounts receivable due after one year	9,319,000	11,635,000
Accounts receivable from related parties	2,064,000	5,840,000
Reserve for doubtful receivables from related parties	$0	$0

Fair_Value_of_Assets_and_Liabi

Fair Value of Assets and Liabilities Measured on Recurring Basis, Including Derivative Instruments (Detail) (Fair Value, Measurements, Recurring, USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument, asset	$52,904	[1]	$33,967	[1]
Total, assets	52,904		33,967
Derivative instrument, liability	85,559	[2]	101,516	[2]
Total, liabilities	85,559		101,516
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument, asset	52,904	[1]	33,967	[1]
Total, assets	52,904		33,967
Derivative instrument, liability	85,559	[2]	101,516	[2]
Total, liabilities	$85,559		$101,516

[1]	Included in prepaid expenses and other current assets and other assets in the consolidated balance sheets.
[2]	Included in accrued expenses and other current liabilities and other liabilities in the consolidated balance sheets.

Recovered_Sheet4

Derivative Financial Instruments - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015
Derivative [Line Items]
Forward foreign exchange contracts, minimum maturity period	0 months
Forward foreign exchange contracts, maximum maturity period	69 months

Aggregate_Notional_Principal_A

Aggregate Notional Principal Amounts of Outstanding Derivative Financial Instruments with Related Balance Sheet Exposure (Detail) (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Derivative [Line Items]
Derivative financial instrument, balance sheet exposure asset (liability)	($32,655)	[1]	($67,549)	[1]
United States Dollars (sell) Indian Rupees (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	1,447,300	[2]	1,282,800	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	-72,126	[1]	-86,913	[1]
United States Dollars (sell) Mexican Peso (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	17,250	[2]	5,640	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	-1,012	[1]	-514	[1]
United States Dollars (sell) Philippines Peso (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	72,900	[2]	72,900	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	-444	[1]	-738	[1]
Euro (sell) United States Dollars (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	109,774	[2]	98,903	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	15,756	[1]	5,458	[1]
Euro (Sell) Romanian Leu (Buy)
Derivative [Line Items]
Derivative instrument notional principal amount	67,667	[2]	81,072	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	1,989	[1]	562	[1]
Japanese Yen (sell) Chinese Renminbi (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	34,956	[2]	28,586	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	2,281	[1]	2,766	[1]
Pound Sterling (sell) United States Dollars (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	117,920	[2]	133,435	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	9,530	[1]	4,278	[1]
Australian Dollars (sell) United States Dollars (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	94,891	[2]	104,362	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	$11,371	[1]	$7,552	[1]

[1]	Balance sheet exposure is denominated in U.S. dollars and denotes the mark-to-market impact of the derivative financial instruments on the reporting date.
[2]	Notional amounts are key elements of derivative financial instrument agreements but do not represent the amount exchanged by counterparties and do not measure the Company's exposure to credit or market risks. However, the amounts exchanged are based on the notional amounts and other provisions of the underlying derivative financial instrument agreements.

Fair_Value_of_Derivative_Instr

Fair Value of Derivative Instruments and Location in Financial Statements (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Not Designated as Hedging Instrument \| Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Fair value of assets	$508	$202
Not Designated as Hedging Instrument \| Accrued Expenses and Other Current Liabilities
Derivatives, Fair Value [Line Items]
Fair value of liabilities	195	965
Cash Flow Hedges \| Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Fair value of assets	28,036	16,636
Cash Flow Hedges \| Other Assets
Derivatives, Fair Value [Line Items]
Fair value of assets	24,360	17,129
Cash Flow Hedges \| Accrued Expenses and Other Current Liabilities
Derivatives, Fair Value [Line Items]
Fair value of liabilities	48,941	64,650
Cash Flow Hedges \| Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of liabilities	$36,423	$35,901

Cash_Flow_Hedges_Gains_Losses_

Cash Flow Hedges, Gains (Losses) Recorded as Component of Other Comprehensive Income (Loss) or Other Comprehensive Income (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Opening balance, before-tax amount	($66,786)	($205,952)
Net gains (losses) reclassified into statement of income on completion of hedged transactions, before-tax amount	-9,254	-12,400
Changes in fair value of effective portion of outstanding derivatives, net, before-tax amount	24,564	47,238
Gain (loss) on cash flow hedging derivatives, net, before-tax amount	33,818	59,638
Closing balance, before-tax amount	-32,968	-146,314
Opening balance, tax (expense) or benefit	23,646	72,612
Net gains (losses) reclassified into statement of income on completion of hedged transactions, tax (expense) or benefit	3,251	4,356
Changes in fair value of effective portion of outstanding derivatives, net, tax (expense) or benefit	-8,734	-17,290
Gain (loss) on cash flow hedging derivatives, net	-11,985	-21,646
Closing balance, tax (expense) or benefit	11,661	50,966
Opening balance, net of tax amount	-43,140	-133,340
Net gains (losses) reclassified into statement of income on completion of hedged transactions, net of tax amount	-6,003	-8,044
Changes in fair value of effective portion of outstanding derivatives, net, net of tax amount	15,830	29,948
Gain (loss) on cash flow hedging derivatives, net of taxes amount	21,833	37,992
Closing balance, net of tax amount	($21,307)	($95,348)

Gains_or_Losses_Recorded_as_Co

Gains or Losses Recorded as Component of Other Comprehensive Income (Loss) or Other Comprehensive Income (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014
Other Comprehensive Income (Loss) [Line Items]
Amount of Gain (Loss) recognized in OCI on Derivatives (Effective Portion)	$24,564		$47,238
Amount of Gain (Loss) recognized in income on Derivative (Ineffective Portion and Amount excluded from Effectiveness Testing)	0		0
Amount of Gain (Loss) reclassified from OCI into Statement of Income (Effective Portion)	-9,254		-12,400
Non designated Hedges, amount of (Gain) Loss recognized in Statement of Income on Derivative	-2,244		-27
Revenue
Other Comprehensive Income (Loss) [Line Items]
Amount of Gain (Loss) reclassified from OCI into Statement of Income (Effective Portion)	2,495		-670
Cost of Revenue
Other Comprehensive Income (Loss) [Line Items]
Amount of Gain (Loss) reclassified from OCI into Statement of Income (Effective Portion)	-9,427		-9,398
Selling, General and Administrative Expenses
Other Comprehensive Income (Loss) [Line Items]
Amount of Gain (Loss) reclassified from OCI into Statement of Income (Effective Portion)	-2,322		-2,332
Foreign Exchange Contract
Other Comprehensive Income (Loss) [Line Items]
Amount of Gain (Loss) recognized in OCI on Derivatives (Effective Portion)	24,564		47,238
Amount of Gain (Loss) recognized in income on Derivative (Ineffective Portion and Amount excluded from Effectiveness Testing)	0		0
Foreign Exchange Contract \| Foreign Exchange (Gains) Losses, Net
Other Comprehensive Income (Loss) [Line Items]
Non designated Hedges, amount of (Gain) Loss recognized in Statement of Income on Derivative	($2,244)	[1]	($27)	[1]

[1]	These forward foreign exchange contracts were entered into to hedge the fluctuations in foreign exchange rates for recognized balance sheet items such as receivables and intercompany borrowings, and were not originally designated as hedges under FASB guidance on derivatives and hedging. Realized (gains) losses and changes in the fair value of these derivatives are recorded in foreign exchange (gains) losses, net in the consolidated statements of income.

Recovered_Sheet5

Prepaid Expenses and Other Current Assets (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Prepaid Expenses And Other Current Assets [Line Items]
Advance taxes	$76,915	$61,251
Deferred transition costs	36,148	40,185
Derivative instruments	28,544	16,838
Employee advances	5,084	5,816
Advances to suppliers	1,440	3,358
Prepaid expenses	15,775	12,949
Customer acquisition cost	5,919	5,557
Deposits	2,817	1,754
Others	8,276	7,772
Prepaid expenses and other current assets, net	$180,918	$155,480

Recovered_Sheet6

Property, Plant and Equipment, Net (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$540,629	$531,960
Less: Accumulated depreciation and amortization	-367,053	-356,024
Property, plant and equipment, net	$173,576	$175,936

Recovered_Sheet7

Property, Plant and Equipment, Net - Additional Information (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$13,517	$12,341
Depreciation Expense on Property, Plant And Equipment
Property, Plant and Equipment [Line Items]
Depreciation and amortization	11,717	10,748
Computer Software Amortization
Property, Plant and Equipment [Line Items]
Depreciation and amortization	2,362	2,156
Effect of Reclassification of Foreign Exchange (Gains) Losses
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$562	$563

Changes_in_Goodwill_Detail

Changes in Goodwill (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Opening balance	$1,057,214	$953,849
Goodwill relating to acquisitions consummated during the period	3,400	127,047
Effect of exchange rate fluctuations	-8,116	-23,682
Closing balance	$1,052,498	$1,057,214

Recovered_Sheet8

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill deductible for tax purposes	$40,186		$37,628
Amortization of acquired intangible assets	$7,341	$6,018

Intangible_Assets_Acquired_Eit

Intangible Assets Acquired Either Individually or with Group of Other Assets or in Business Combination (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$381,721	$372,208
Accumulated amortization	264,435	257,664
Net	117,286	114,544
Customer-Related Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	317,795	310,069
Accumulated amortization	233,693	228,095
Net	84,102	81,974
Marketing-Related Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	43,061	43,137
Accumulated amortization	24,585	23,801
Net	18,476	19,336
Other Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	20,865	19,002
Accumulated amortization	6,157	5,768
Net	$14,708	$13,234

ShortTerm_Borrowings_Additiona

Short-Term Borrowings - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended	1 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2013	Aug. 30, 2012	Mar. 23, 2015	Jan. 27, 2015
Line of Credit Facility [Line Items]
Fund-based and non-fund-based credit facilities limits available	$14,417,000	$14,282,000
Utilization of credit facility for non fund-based usage	8,366,000	8,138,000
Credit facility, maximum borrowing capacity				925,000,000
Credit facility, amount utilized	137,224,000	137,224,000
Margin over LIBOR	2.75%	2.75%
Percentage of commitment fee	0.50%	0.50%
Revolving credit facility, expiration month and year	2017-08
Line of credit covenant condition	Indebtedness under the facility is secured by certain assets of the Company, and the credit agreement contains certain covenants, including a maximum leverage covenant that becomes effective only if the revolving facility is drawn for $50,000 or more.
Short term loans	135,000,000	135,000,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity				250,000,000
Margin over LIBOR			2.50%
Fund-Based Credit Facility
Line of Credit Facility [Line Items]
Credit facility, amount utilized	135,000,000	135,000,000
Margin over LIBOR	2.50%	2.50%
Non-Fund-Based Credit Facility
Line of Credit Facility [Line Items]
Credit facility, amount utilized	2,224,000	2,224,000
Consortium of financial institutions
Line of Credit Facility [Line Items]
Short term loans					737,500,000	672,500,000
Short term borrowings fixed interest rate	2.00%
Debt issuance cost	1,045,000
Interest expense	$235

LongTerm_Debt_Additional_Infor

Long-Term Debt - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Mar. 31, 2015	Dec. 31, 2014	Aug. 30, 2012
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity				$925,000
Termination of credit facility				380,000
Margin over LIBOR		2.75%	2.75%
LIBOR floor rate	0.75%	0.75%	0.75%
Term loan amounts outstanding, gross	671,625
Unmodified portion of Term Loan	553,589
Extinguishment of outstanding term loan	118,036
Increase in outstanding term loan	121,410
Term loan amounts outstanding		652,522	653,602
Debt amortization expense		10,664	11,274
Principal amount of term loan		675,000
Credit facility, frequency of payments		Quarterly
Percentage of Principal amount of existing credit facility to be paid periodically		0.25%
Maturity date of term loan agreement		30-Aug-19
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity				250,000
Margin over LIBOR	2.50%
Acceleration amortization of debt issuance cost	54
Term Loan Credit Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	675,000			675,000
Margin over LIBOR	2.75%
Original Margin
Debt Instrument [Line Items]
Margin over LIBOR	3.25%
LIBOR floor rate	1.00%
Term Loans
Debt Instrument [Line Items]
Acceleration amortization of debt issuance cost	$3,103

Maturity_Profile_of_Term_Loan_

Maturity Profile of Term Loan Net of Debt Amortization Expense (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Long-Term Debt
2015	$3,210
2016	4,306
2017	4,338
2018	4,363
2019	636,305
Term loan amounts outstanding	$652,522	$653,602

Recovered_Sheet9

Accrued Expenses and Other Current Liabilities (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Accrued Expenses and Other Current Liabilities [Line Items]
Accrued expenses	$110,652	$114,770
Accrued employee cost	86,378	143,829
Deferred transition revenue	45,585	49,792
Statutory liabilities	28,886	24,713
Retirement benefits	20,099	16,807
Derivative instruments	49,136	65,615
Advance from customers	22,711	19,857
Earn-out consideration	3,211	3,232
Other liabilities	9,869	12,399
Accrued expenses and other current liabilities, net	$376,527	$451,014

Net_Defined_Benefit_Plan_Costs

Net Defined Benefit Plan Costs (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Service costs	$1,384	$1,190
Interest costs	678	619
Amortization of actuarial loss	85	78
Expected return on plan assets	-549	-447
Net Gratuity Plan costs	$1,598	$1,440

Amounts_Contributed_to_Defined

Amounts Contributed to Defined Contribution Plans in Various Jurisdictions (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	$12,199	$10,434
India
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	3,909	3,575
UNITED STATES
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	2,628	1,591
U.K.
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	1,040	545
China
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	3,516	3,537
Other Regions
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	$1,106	$1,186

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended			0 Months Ended			12 Months Ended	1 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Aug. 30, 2012	Mar. 31, 2015		Mar. 31, 2014	Dec. 31, 2012	Sep. 24, 2012	Apr. 11, 2012	Dec. 31, 2014	Jan. 31, 2015	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend per share	$2.24
Stock based compensation cost		$4,579		$4,902
Options granted, contractual period, years		10 years
Granted, shares arising out of options		170,000		0
Unrecognized stock-based compensation cost for options		19,193
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options vesting period, years		4 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options vesting period, years		5 years
2007 Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amended Omnibus Plan, increase in number of common shares authorized for issuance					6,314,496	2,544,327	5,593,200
Number of common shares authorized for issuance							15,000,000
2005 Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amended Omnibus Plan, increase in number of common shares authorized for issuance						495,915
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining requisite vesting period		3 years 1 month 6 days
Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining requisite vesting period		2 years 2 months 12 days
Vested, number of shares (units)								1,329,270
Unrecognized stock-based compensation cost		22,029
Restricted Share Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining requisite vesting period		2 years
Minimum vesting schedules, months		3 months
Maximum vesting schedules, years		4 years
Vested, number of shares (units)		8,942	[1]					92,692		61,057
Common shares issued net of shares for tax withholdings		5,417							59,827
Unrecognized stock-based compensation cost		3,490
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of closing price per share allowed to eligible employees to purchase through payroll deductions		90.00%
Maximum percentage of employee's base salary allowed to be purchased		15.00%
Maximum dollar amount of common shares allowed to be purchased		25
Common shares reserved for issuance		4,200,000
Number of common shares issued under ESPP		34,162		40,534
Compensation expense for ESPP		$81		$71

[1]	Vested RSUs have been net settled upon vesting by issuing 5,417 shares (net of minimum statutory tax withholding).

Significant_Assumptions_used_i

Significant Assumptions used in Determination of Fair Value of Options Granted (Detail)	3 Months Ended
	Mar. 31, 2015
Assumptions used to Determine Fair Value Options [Line Items]
Dividend yield	0.00%
Expected life (in months)	84 months
Risk free rate of interest for expected life	1.99%
Volatility	34.97%

Summary_of_Stock_Option_Activi

Summary of Stock Option Activity (Detail) (USD $)	3 Months Ended			12 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014	Dec. 31, 2014
Shares arising out of options
Outstanding, shares arising out of options, beginning balance	7,371,727
Granted, shares arising out of options	170,000		0
Forfeited, shares arising out of options	0
Expired, shares arising out of options	0
Exercised, shares arising out of options	-659,257
Outstanding, shares arising out of options, ending balance	6,882,470			7,371,727
Vested and expected to vest thereafter, shares arising out of options	6,578,643	[1]
Vested and Exercisable, shares arising out of options	2,883,564
Weighted average grant date fair value of grants made during the period	$9.15
Weighted average exercise price
Outstanding weighted average exercise price, beginning balance	$15.44
Granted, weighted average exercise price	$22.77
Forfeited, weighted average exercise price	$0
Expired, weighted average exercise price	$0
Exercised, weighted average exercise price	$8.86
Outstanding weighted average exercise price, ending balance	$16.26			$15.44
Vested and expected to vest thereafter, weighted average exercise price	$15.99	[1]
Vested and Exercisable, weighted average exercise price	$11.94
Weighted average remaining contractual life (years)
Outstanding weighted average remaining contractual life (years)	6 years 1 month 6 days			5 years 10 months 24 days
Vested and expected to vest thereafter, weighted average remaining contractual life (years)	6 years 1 month 6 days	[1]
Vested and Exercisable, weighted average remaining contractual life (years)	3 years
Aggregate intrinsic value
Exercised, aggregate intrinsic value	$9,487
Outstanding aggregate intrinsic value, ending balance	48,967
Vested and expected to vest thereafter, aggregate intrinsic value	47,743	[1]
Vested and Exercisable, aggregate intrinsic value	$32,599

[1]	Options expected to vest reflect an estimated forfeiture rate.

Summary_of_Restricted_Share_Un

Summary of Restricted Share Units Granted (Detail) (Restricted Share Units (RSUs), USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015		Dec. 31, 2014	Dec. 31, 2013
Restricted Share Units (RSUs)
Number of Restricted Share Units
Outstanding number of shares (Units), beginning balance	488,418
Granted, number of shares (Units)	0
Vested, number of shares (Units)	-8,942	[1]	-92,692	-61,057
Forfeited, number of shares (Units)	-12,422
Outstanding number of shares (Units), ending balance	467,054		488,418
Expected to vest, number of shares (Units)	439,485	[2]
Weighted Average Grant Date Fair Value
Outstanding weighted average grant date fair value, beginning balance	$15.36
Granted, weighted average grant date fair value	$0
Vested, weighted average grant date fair value	$14.32	[1]
Forfeited, weighted average grant date fair value	$13.93
Outstanding weighted average grant date fair value, ending balance	$15.41		$15.36

[1]	Vested RSUs have been net settled upon vesting by issuing 5,417 shares (net of minimum statutory tax withholding).
[2]	RSUs expected to vest reflect an estimated forfeiture rate.

Summary_of_Restricted_Share_Un1

Summary of Restricted Share Units Granted (Parenthetical) (Detail) (Restricted Share Units (RSUs))	1 Months Ended	3 Months Ended
	Jan. 31, 2015	Mar. 31, 2015
Restricted Share Units (RSUs)
Schedule Of Activity Related To Restricted Shares And Restricted Share [Line Items]
RSUs settled on vesting by issuing shares (net of minimum tax withholding)	59,827	5,417

Summary_of_Performance_Units_A

Summary of Performance Units Activity (Detail) (Performance Units, USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015		Dec. 31, 2014
Performance Units
Number of Share Units
Outstanding number of shares (Units), beginning balance	1,292,750
Granted, number of shares (Units)	562,000
Vested, number of shares (Units)			-1,329,270
Forfeited, number of shares (Units)	-16,350
Addition due to achievement of higher than target performance goals	51,595	[1]
Outstanding number of shares (Units), ending balance	1,889,995		1,292,750
Expected to vest, number of shares	1,588,070	[2]
Weighted Average Grant Date Fair Value
Outstanding weighted average grant date fair value, beginning balance	$16.78
Granted, weighted average grant date fair value	$22.77
Vested, weighted average grant date fair value	$0
Forfeited, weighted average grant date fair value	$16.78
Addition due to achievement of higher than target performance goals, weighted average grant date fair value	$16.78	[1]
Reduction due to achievement of lower than maximum performance goals	$0	[3]
Outstanding weighted average grant date fair value, ending balance	$18.56		$16.78
Maximum shares eligible to receive
Outstanding maximum shares eligible to receive, beginning balance	2,648,626
Granted, maximum shares eligible to receive	1,405,000
Vested, maximum shares eligible to receive	0
Forfeited, maximum shares eligible to receive	-24,525
Reduction due to achievement of lower than maximum performance goals, maximum shares eligible to receive	-1,296,105	[3]
Outstanding maximum shares eligible to receive, ending balance	2,732,996		2,648,626

[1]	Represents additional shares awarded ranging from 0.8% to 6.6% of the target shares as a result of the achievement of higher-than-target performance for the PUs granted in April 2014.
[2]	PUs expected to vest are based on the probable achievement of the performance targets after considering an estimated forfeiture rate.
[3]	Represents a 143.4% and 49.2% reduction in the maximum shares eligible to vest as a result of the certification of the level of achievement of the performance goals for the PUs granted in April 2014.

Summary_of_Performance_Units_A1

Summary of Performance Units Activity (Parenthetical) (Detail) (Performance Units)	1 Months Ended	12 Months Ended
	Jan. 31, 2015	Dec. 31, 2014	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested, number of shares (units)		1,329,270
Common shares issued net of shares for tax withholdings	845,524
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Addition due to achievement of higher than target performance, percentage			0.80%
Reduction due to achievement of lower than maximum performance, percentage			49.20%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Addition due to achievement of higher than target performance, percentage			6.60%
Reduction due to achievement of lower than maximum performance, percentage			143.40%

Capital_Stock_Additional_Infor

Capital Stock - Additional Information (Detail) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Feb. 28, 2015
Class of Stock [Line Items]
Shares repurchased and retired (in shares)	590,713
Common stock shares repurchased price per share	$22.51
Aggregate amount of common stock shares repurchased	$13,298
Expenses related to stock repurchase	12
Share Repurchase Program
Class of Stock [Line Items]
Aggregate amount of common stock shares repurchased	13,298
Maximum
Class of Stock [Line Items]
Stock repurchase authorized amount		$250,000

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail)	3 Months Ended
Earnings Per Share - Additional Information (Detail)	Mar. 31, 2015	Mar. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of stock options outstanding but not included in the computation of diluted earnings per common share	3,928,000	3,379,764

Earnings_Per_Share_Detail

Earnings Per Share (Detail) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share (Abstract)
Net income available to Genpact Limited common shareholders	$44,653	$50,613
Weighted average number of common shares used in computing basic earnings per common share	219,892,695	232,093,917
Dilutive effect of stock-based awards	2,454,406	5,181,734
Weighted average number of common shares used in computing dilutive earnings per common share	222,347,101	237,275,651
Earnings per common share attributable to Genpact Limited common shareholders, Basic	$0.20	$0.22
Earnings per common share attributable to Genpact Limited common shareholders, Diluted	$0.20	$0.21

Cost_of_Revenue_Detail

Cost of Revenue (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Component of Operating Other Cost and Expense [Abstract]
Cost of revenue	$357,476	$324,289
Personnel expenses
Component of Operating Other Cost and Expense [Abstract]
Cost of revenue	242,948	227,027
Operational expenses
Component of Operating Other Cost and Expense [Abstract]
Cost of revenue	102,797	86,421
Depreciation and amortization
Component of Operating Other Cost and Expense [Abstract]
Cost of revenue	$11,731	$10,841

Recovered_Sheet10

Selling, General and Administrative Expenses (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Component of Operating Other Cost and Expense [Abstract]
Selling, general and administrative expenses	$148,748	$122,498
Personnel expenses
Component of Operating Other Cost and Expense [Abstract]
Selling, general and administrative expenses	105,838	89,506
Operational expenses
Component of Operating Other Cost and Expense [Abstract]
Selling, general and administrative expenses	40,562	30,929
Depreciation and amortization
Component of Operating Other Cost and Expense [Abstract]
Selling, general and administrative expenses	$2,348	$2,063

Recovered_Sheet11

Other Operating Income (Expense), Net (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Components of Other Operating Income [Line Items]
Other operating (income) expense	($462)	($220)
Change in fair value of earn out consideration and deferred consideration (relating to business acquisitions)		-1,642
Other operating (income) expense, net	($462)	($1,862)

Other_Income_Expense_Net_Detai

Other Income (Expense), Net (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Other Income (Expense), Net
Interest income	$1,196	$1,359
Interest expense	-10,221	-7,761
Other income (expense)	458	-131
Other income (expense), net	($8,567)	($6,533)

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Line Items]
Amount of unrecognized tax benefits	$22,369	$22,718
Unrecognized tax benefits that would impact effective tax rate	20,927	21,268
Unrecognized tax benefits, interest on income taxes accrued	3,582	3,417
Unrecognized tax benefits, interest expense recognized	165	44
Accrued penalties	$557	$561

Activities_Related_to_Unrecogn

Activities Related to Unrecognized Tax Benefits for Uncertain Tax Positions (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Schedule of Unrecognized Tax Benefits [Line Items]
Beginning Balance	$22,718
Increase related to prior year tax positions, including recorded in acquisition accounting	2
Decrease related to prior year tax positions	-346
Effect of exchange rate changes	-5
Ending Balance	$22,369

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Related Party Transaction [Line Items]
Investment in equity affiliates outstanding	$3,050	$494
Significant Shareholder of Company
Related Party Transaction [Line Items]
Recognized net revenues	99		71
Non-Consolidating Affiliates
Related Party Transaction [Line Items]
Cost of revenue	390		533
Selling, general and administrative expenses, net of recovery	95		137
Selling, general and administrative expenses, net of recovery outstanding	1,299
Investment in equity affiliates	4,777	1,555
Balance of investment in non-consolidating affiliates	3,050	494
Investment in equity affiliates outstanding	6,701	5,146
Non-Consolidating Affiliates \| Prepaid Expenses and Other Current Assets
Related Party Transaction [Line Items]
Reimbursements receivable	1,744
Non-Consolidating Affiliates \| Accrued Expenses and Other Current Liabilities
Related Party Transaction [Line Items]
Balance of investment in non-consolidating affiliates	3,222
Non-Consolidating Affiliates \| Significant Shareholder of Company
Related Party Transaction [Line Items]
Selling, general and administrative expenses, net of recovery	399
Affiliate of Significant Shareholder
Related Party Transaction [Line Items]
Recognized net revenues	$2,039

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Commitments and Contingencies [Line Items]
Commitments and contingencies
Commitment To Purchase Property, Plant and Equipment
Commitments and Contingencies [Line Items]
Commitments and contingencies	4,592	6,073
Outstanding Bank Guarantees
Commitments and Contingencies [Line Items]
Commitments and contingencies	$10,590	$10,362

Subsequent_Event_Additional_In

Subsequent Event - Additional Information (Detail) (USD $)	3 Months Ended	1 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	8-May-15
Subsequent Event [Line Items]
Shares repurchased and retired (in shares)	590,713
Common stock shares repurchased price per share	$22.51
Aggregate amount of common stock shares repurchased	$13,298
Subsequent Event
Subsequent Event [Line Items]
Shares repurchased and retired (in shares)		1,117,625
Common stock shares repurchased price per share		$22.56
Aggregate amount of common stock shares repurchased		$25,216