Genpact Limited (G) 10-Q8 Nov 132013 Q3 Quarterly reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
Document and Entity Information	Sep. 30, 2013	Oct. 28, 2013
Document Information [Line Items]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'G	'
Entity Registrant Name	'GENPACT LTD	'
Entity Central Index Key	'0001398659	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	230,183,725

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets	'	'
Cash and cash equivalents	$481,498	$459,228
Accounts receivable, net	476,997	451,960
Accounts receivable from related party, net	63	29
Short term deposits	17,505	18,292
Deferred tax assets	61,654	48,489
Prepaid expenses and other current assets	179,402	150,769
Total current assets	1,217,119	1,128,767
Property, plant and equipment, net	168,374	200,362
Deferred tax assets	102,878	91,383
Investment in equity affiliates	349	416
Intangible assets, net	106,932	112,387
Goodwill	950,424	956,064
Other assets	98,059	116,548
Total assets	2,644,135	2,605,927
Current liabilities	'	'
Short-term borrowings	'	80,000
Current portion of long-term debt	4,256	4,982
Current portion of capital lease obligations	1,384	1,301
Accounts payable	15,281	18,652
Income taxes payable	58,936	22,304
Deferred tax liabilities	384	538
Accrued expenses and other current liabilities	401,476	390,041
Total current liabilities	481,717	517,818
Long-term debt, less current portion	654,664	656,879
Capital lease obligations, less current portion	2,736	2,533
Deferred tax liabilities	5,539	6,068
Other liabilities	297,955	250,848
Total liabilities	1,442,611	1,434,146
Shareholders' equity	'	'
Preferred shares, $0.01 par value, 250,000,000 authorized, none issued	'	'
Common shares, $0.01 par value, 500,000,000 authorized, 225,480,172 and 230,147,557 issued and outstanding as of December 31, 2012 and September 30, 2013, respectively	2,300	2,253
Additional paid-in capital	1,252,122	1,202,448
Retained earnings	462,857	281,982
Accumulated other comprehensive income (loss)	-517,791	-318,272
Genpact Limited shareholders' equity	1,199,488	1,168,411
Noncontrolling interest	2,036	3,370
Total equity	1,201,524	1,171,781
Commitments and contingencies	'	'
Total liabilities and equity	2,644,135	2,605,927
Customer-Related Intangible Assets	'	'
Current assets	'	'
Intangible assets, net	79,250	84,748
Marketing-Related Intangible Assets	'	'
Current assets	'	'
Intangible assets, net	20,628	21,585
Other Intangible Assets	'	'
Current assets	'	'
Intangible assets, net	$7,054	$6,054

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Preferred shares, par value	$0.01	$0.01
Preferred shares, authorized	250,000,000	250,000,000
Preferred shares, issued	'	'
Common shares, par value	$0.01	$0.01
Common shares, authorized	500,000,000	500,000,000
Common shares, issued	230,147,557	225,480,172
Common shares, outstanding	230,147,557	225,480,172

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net revenues	'	'	'	'
Net revenues from services-others	$534,696	$490,987	$1,572,967	$1,393,780
Net revenues from services-related party	190	170	571	487
Total net revenues	534,886	491,157	1,573,538	1,394,267
Cost of revenue	'	'	'	'
Services	329,289	297,253	973,729	847,940
Total cost of revenue	329,289	297,253	973,729	847,940
Gross profit	205,597	193,904	599,809	546,327
Operating expenses:	'	'	'	'
Selling, general and administrative expenses	117,005	118,536	348,632	337,794
Amortization of acquired intangible assets	5,867	6,014	17,603	17,094
Other operating (income) expense, net	-3,232	-598	-4,320	-2,111
Income from operations	85,957	69,952	237,894	193,550
Foreign exchange (gains) losses, net	-10,817	13,220	-24,619	-5,086
Other income (expense), net	-3,454	-14,932	-19,104	-15,755
Income before Equity-method investment activity, net and income tax expense	93,320	41,800	243,409	182,881
Equity-method investment activity, net	-32	-50	-139	-24
Income before income tax expense	93,352	41,850	243,548	182,905
Income tax expense	21,921	15,239	58,403	53,239
Net Income	71,431	26,611	185,145	129,666
Net income attributable to noncontrolling interest	1,169	1,436	4,270	4,851
Net income attributable to Genpact Limited shareholders	70,262	25,175	180,875	124,815
Net income available to Genpact Limited common shareholders	$70,262	$25,175	$180,875	$124,815
Earnings per common share attributable to Genpact Limited common shareholders	'	'	'	'
Basic	$0.31	$0.11	$0.79	$0.56
Diluted	$0.30	$0.11	$0.77	$0.55
Weighted average number of common shares used in computing earnings per common share attributable to Genpact Limited common shareholders	'	'	'	'
Basic	230,057,508	223,876,035	228,840,746	223,289,507
Diluted	236,336,924	230,195,834	235,095,660	228,516,391

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income	$71,431	$26,611	$185,145	$129,666
Other comprehensive income:	'	'	'	'
Net income (loss) on cash flow hedging derivatives, net of taxes (Note 7)	-33,963	74,027	-63,411	40,786
Other comprehensive income (loss)	'	'	-199,454	53,036
Genpact Limited Shareholders	'	'	'	'
Net income	70,262	25,175	180,875	124,815
Other comprehensive income:	'	'	'	'
Currency translation adjustments	-44,370	77,970	-136,108	12,506
Net income (loss) on cash flow hedging derivatives, net of taxes (Note 7)	-33,963	74,027	-63,411	40,786
Other comprehensive income (loss)	-78,333	151,997	-199,519	53,292
Comprehensive income (loss)	-8,071	177,172	-18,644	178,107
Noncontrolling Interest	'	'	'	'
Net income	1,169	1,436	4,270	4,851
Other comprehensive income:	'	'	'	'
Currency translation adjustments	31	-157	65	-256
Other comprehensive income (loss)	31	-157	65	-256
Comprehensive income (loss)	$1,200	$1,279	$4,335	$4,595

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, 2011	$1,435,683	$2,222	$1,146,203	$605,386	($320,753)	$2,625
Beginning balance, value (in shares) at Dec. 31, 2011	'	222,347,968	'	'	'	'
Issuance of common shares on exercise of options (Note 11) (in shares)	'	1,461,981	'	'	'	'
Issuance of common shares on exercise of options (Note 11)	18,746	15	18,731	'	'	'
Issuance of common shares under the employee stock purchase plan (Note 11) (in shares)	'	63,106	'	'	'	'
Issuance of common shares under the employee stock purchase plan (Note 11)	938	1	937	'	'	'
Net settlement on vesting of restricted share units (Note 11) (in shares)	'	243,696	'	'	'	'
Net settlement on vesting of restricted share units (Note 11)	-1,746	2	-1,748	'	'	'
Distribution to noncontrolling interest	-3,961	'	'	'	'	-3,961
Stock-based compensation expense (Note 11)	22,856	'	22,856	'	'	'
Comprehensive income:	'	'	'	'	'	'
Net income	129,666	'	'	124,815	'	4,851
Other comprehensive income (loss)	53,036	'	'	'	53,292	-256
Dividend (Note 21)	-501,620	'	'	-501,620	'	'
End balance, value at Sep. 30, 2012	1,153,598	2,240	1,186,979	228,581	-267,461	3,259
End balance, value (in shares) at Sep. 30, 2012	'	224,116,751	'	'	'	'
Beginning balance, value at Jun. 30, 2012	'	'	'	'	'	'
Comprehensive income:	'	'	'	'	'	'
Net income	26,611	'	'	'	'	1,436
Other comprehensive income (loss)	'	'	'	'	'	-157
End balance, value at Sep. 30, 2012	1,153,598	'	'	'	'	3,259
Beginning balance, value at Dec. 31, 2012	1,171,781	2,253	1,202,448	281,982	-318,272	3,370
Beginning balance, value (in shares) at Dec. 31, 2012	225,480,172	225,480,172	'	'	'	'
Issuance of common shares on exercise of options (Note 11) (in shares)	3,784,851	3,784,851	'	'	'	'
Issuance of common shares on exercise of options (Note 11)	34,017	38	33,979	'	'	'
Issuance of common shares under the employee stock purchase plan (Note 11) (in shares)	'	81,040	'	'	'	'
Issuance of common shares under the employee stock purchase plan (Note 11)	1,372	1	1,371	'	'	'
Net settlement on vesting of restricted share units (Note 11) (in shares)	'	305,382	'	'	'	'
Net settlement on vesting of restricted share units (Note 11)	-2,535	3	-2,538	'	'	'
Net settlement on vesting of performance units (Note 11) (in shares)	'	496,112	'	'	'	'
Net settlement on vesting of performance units (Note 11)	-5,064	5	-5,069	'	'	'
Disposition of noncontrolling interest	-1,055	'	'	'	'	-1,055
Distribution to noncontrolling interest	-4,614	'	'	'	'	-4,614
Stock-based compensation expense (Note 11)	21,931	'	21,931	'	'	'
Comprehensive income:	'	'	'	'	'	'
Net income	185,145	'	'	180,875	'	4,270
Other comprehensive income (loss)	-199,454	'	'	'	-199,519	65
End balance, value at Sep. 30, 2013	1,201,524	2,300	1,252,122	462,857	-517,791	2,036
End balance, value (in shares) at Sep. 30, 2013	230,147,557	230,147,557	'	'	'	'
Beginning balance, value at Jun. 30, 2013	'	'	'	'	'	'
Comprehensive income:	'	'	'	'	'	'
Net income	71,431	'	'	'	'	1,169
Other comprehensive income (loss)	'	'	'	'	'	31
End balance, value at Sep. 30, 2013	$1,201,524	'	'	'	'	$2,036
End balance, value (in shares) at Sep. 30, 2013	230,147,557	'	'	'	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Operating activities	'	'
Net income attributable to Genpact Limited shareholders	$180,875	$124,815
Net income attributable to noncontrolling interest	4,270	4,851
Net income	185,145	129,666
Adjustments to reconcile net income to net cash provided by (used for) operating activities:	'	'
Depreciation and amortization	40,270	41,609
Amortization of debt issue costs (including loss on extinguishment of debt)	5,215	7,468
Amortization of acquired intangible assets	17,603	17,149
Reserve for doubtful receivables	8,919	2,780
Reserve for mortgage loans	'	107
Unrealized (gain) loss on revaluation of foreign currency asset/liability	-5,646	-1,307
Equity-method investment activity, net	-139	-24
Stock-based compensation expense	21,931	22,856
Deferred income taxes	4,194	-9,297
Others, net	5,872	2,287
Change in operating assets and liabilities:	'	'
Increase in accounts receivable	-30,613	-45,209
Increase in other assets	-35,014	-64,645
Decrease in accounts payable	-797	-3,876
Increase (Decrease) in accrued expenses and other current liabilities	-24,601	29,994
Increase in income taxes payable	37,103	45,688
Increase in other liabilities	3,775	34,226
Net cash provided by operating activities	233,217	209,472
Investing activities	'	'
Purchase of property, plant and equipment	-37,061	-60,141
Proceeds from sale of property, plant and equipment	2,996	374
Investment in affiliates	'	-205
Short term deposits placed	-55,259	-25,638
Redemption of short term deposits	51,955	25,638
Payment for business acquisitions, net of cash acquired	-49,235	-53,931
Proceeds from divestiture of business, net of cash divested (refer note 3C(a))	-1,049	'
Net cash used for investing activities	-87,653	-113,903
Financing activities	'	'
Repayment of capital lease obligations	-1,284	-1,684
Proceeds from long-term debt	121,410	675,000
Repayment of long-term debt	-121,410	-105,000
Proceeds from Short-term borrowings	35,000	80,000
Repayment of Short-term borrowings	-115,000	-252,350
Proceeds from issuance of common shares under stock-based compensation plans	35,389	19,684
Payment for net settlement of stock-based awards	-7,599	-1,746
Payment of earn-out consideration	-3,868	-587
Cost incurred in relation to Debt amendment and refinancing	-8,104	-14,438
Distribution to noncontrolling interest	-4,614	-3,961
Dividend paid	'	-501,620
Net cash used for financing activities	-70,080	-106,702
Effect of exchange rate changes	-53,214	-2,384
Net increase (decrease) in cash and cash equivalents	75,484	-11,133
Cash and cash equivalents at the beginning of the period	459,228	408,020
Cash and cash equivalents at the end of the period	481,498	394,503
Supplementary information	'	'
Cash paid during the period for interest	25,484	5,785
Cash paid during the period for income taxes	52,805	65,708
Property, plant and equipment acquired under capital lease obligation	$1,933	$1,955

Organization

Organization	9 Months Ended
Organization	Sep. 30, 2013
Organization	'
	1. Organization
	Nature of Operations
	The Company is a global leader in transforming and running business processes and operations, including those that are complex and industry-specific. The Company’s mission is to help clients become more competitive by making their enterprises more intelligent through becoming more adaptive, innovative, globally effective and connected to their own clients. Genpact stands for Generating Impact – visible in better management of risk, regulations, costs and growth for hundreds of long-term clients, including more than 100 of the Fortune Global 500. The Company’s approach is distinctive – it offers an unbiased, agile combination of smarter processes, crystallized in its Smart Enterprise Processes (SEP^SM) proprietary framework, along with analytics and technology, which limits upfront investments and enhances future adaptability. The Company has 60,000+ employees in 24 countries with key management and corporate offices in New York City. Behind the Company’s single-minded 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 15 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 subsequently declined to less than 5.0%, as a result of which GE is no longer considered a related party.
	On December 14, 2012, a secondary offering of the Company’s common shares by 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.
	2012 Recapitalization
	On August 1, 2012, the Company announced that Glory Investments A Limited, formerly known as South Asia Private Investments and an affiliate of Bain Capital Investors, LLC (“Bain Capital”), had entered into an agreement to purchase approximately 67,750,678 common shares of the Company from affiliates of GA and OH for $14.76 per share, or approximately $1,000,000, after payment by the Company of a special cash dividend of $2.24 per share. The special cash dividend was declared by the Company’s board of directors on August 30, 2012, and paid on September 24, 2012 to holders of record as of September 10, 2012. On October 25, 2012, Bain Capital and its affiliated assignees completed the purchase of 57,537,264 common shares of the Company. As permitted under the share purchase agreement, 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) purchased the remaining 50,812 shares and 10,162,602 shares of the Company, respectively, covered by the share purchase agreement.
	On August 30, 2012, the Company terminated its previous credit facility of $380,000 and entered into a new credit facility of $925,000, to repay the previous credit facility, fund a portion of the special cash dividend, pay fees and expenses in connection with the foregoing and to provide for general corporate purposes of the Company, including working capital requirements. Net proceeds from the credit facility along with cash on hand were partially used to fund the dividend payment of $2.24 per share, or $501,620 in the aggregate, which was paid on all issued and outstanding common shares. In accordance with the terms of the Company’s stock-based compensation plans, in order to preserve the value of stock-based awards outstanding as of the record date, the Company reduced the exercise price per share of each outstanding stock option award and increased the number of shares in relation to all outstanding stock-based awards as of the record date of the special cash dividend. This transaction, together with other related transactions, is referred to as the “2012 Recapitalization.” In June 2013, the Company amended its credit facility with a consortium of financial institutions as described in Note 14.
	The Company incurred expenses of approximately $23,464 for the 2012 Recapitalization excluding the fees associated with the previous credit facility and the new credit facility. Out of the total expenses of $23,464, $6,237 was incurred and recorded as a part of “selling, general and administrative expenses” in the Consolidated Statements of Income for the year ended December 31, 2012. The balance of the total expenses of approximately $17,227 relating to the share purchase transaction were incurred and accrued as of December 31, 2012 and reported as a part of “other income (expense), net” in the Consolidated Statements of Income for the year ended December 31, 2012. GA and OH, collectively, reimbursed $17,000 of the $17,227 to the Company on October 25, 2012 at the closing of the share purchase transaction in accordance with the letter agreement among the Company, GA and OH. This reimbursement was recorded as a part of “other income (expense), net” in the Consolidated Statements of Income for the year ended December 31, 2012.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2013
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, 2012.
	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 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 a 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 noncontrolling shareholders’ interest in the operation of Hello Communications (Shanghai) Co., Ltd. and the profits or losses associated with the noncontrolling interest in those operations. 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 and, 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.
	(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, the reserve for doubtful receivables, the valuation allowance for deferred tax assets, the valuation of derivative financial instruments, the measurements of stock-based compensation, assets and obligations related to employee benefits, 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 knowledge of current events and actions, actual results could differ from these estimates. Any changes in estimates are adjusted prospectively in the consolidated financial statements.
	(c) Business combinations, goodwill and other intangible assets
	The Company accounts for its business combinations by recognizing the identifiable tangible and intangible assets acquired and 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 at 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 9 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
	Contract-related intangible assets		1 year
	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 30% and 27% of receivables as of December 31, 2012 and September 30, 2013, respectively. GE accounted for 26% and 23% of revenues for the nine months ended September 30, 2012 and 2013, respectively, and for 26% and 22% of revenues for the three months ended September 30, 2012 and 2013, respectively.

	(e) Recently adopted accounting pronouncements
	The authoritative bodies release standards and guidance which are assessed by management for impact on the Company’s consolidated financial statements.
	The following recently released accounting standard has been adopted by the Company and certain disclosures in the consolidated financial statements and notes to the consolidated financial statements have been modified accordingly. Adoption of this standard did not have a material impact on the consolidated results of operations, cash flows, financial position or disclosures:

		•	Effective January 1, 2013, the Company adopted FASB ASU 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (“ASU 2013-02”). ASU 2013-02 amended existing guidance by requiring additional disclosure either on the face of the income statement or in the notes to the financial statements of significant amounts reclassified out of accumulated other comprehensive income. ASU 2013-02 requires prospective adoption and affects financial statement disclosure only.
	(f) Reclassification
	Certain reclassifications have been made in the consolidated financial statements of prior periods to conform to the classification used in the current period. The impact of such reclassifications on the consolidated financial statements is not material.

Business_Acquisitions_and_Dive

Business Acquisitions and Divestitures	9 Months Ended
Business Acquisitions and Divestitures	Sep. 30, 2013
Business Acquisitions and Divestitures	'
	3. Business acquisitions and divestitures

	A. Acquisitions

	(a) Third Pillar Systems, Inc.

	On August 30, 2013, the Company acquired certain assets, including contracts, and assumed certain liabilities of Third Pillar Systems, Inc., a Nevada corporation (“Third Pillar”) for cash consideration of $2,500. As a part of the transaction, the Company also hired employees of Third Pillar. With this transaction, the Company has acquired an integrated set of processes and assets capable of independently providing returns to the Company. Third Pillar is a provider of software solutions for the commercial lending and leasing industry. There are no contingent consideration arrangements in connection with the acquisition. Of the cash consideration of $2,500, the Company has held back $225 in accordance with the terms of the asset purchase agreement.

	This acquisition has been accounted for under the acquisition method of accounting in accordance with ASC 805, Business Combinations. The following table summarizes the allocation of purchase price based on the fair value of assets acquired and liabilities assumed as of the acquisition date:




	Cash consideration		$	2,500
	Recognized amounts of identifiable assets acquired and liabilities assumed
	Current assets		$	375
	Intangible assets			298
	Other non-current assets			24
	Current liabilities			(200	)
	Total identifiable net assets acquired		$	497
	Goodwill			2,003
	Total		$	2,500
	Through this transaction, the Company has acquired an end to end platform and processes to supplement its commercial lending and leasing portfolio, thereby strengthening the Company’s service offerings in this industry. Goodwill representing the excess of the purchase consideration over the net assets acquired is deductible for tax purposes and has been allocated to the India reporting unit. The above technology related intangible asset has an estimated useful life of 8 years.

	(b) NGEN Media Services Private Limited

	On March 28, 2013, the Company acquired the remaining 50% of the outstanding equity interest in NGEN Media Services Private Limited, a private limited company organized under the laws of India (“NGEN”), and thereby increased its interest from 50% to 100%, providing the Company control over NGEN as a wholly owned subsidiary. NGEN is engaged in the business of media services outsourcing.

	The Company acquired the remaining 50% equity interest for cash consideration of $158. There are no contingent consideration arrangements in connection with the acquisition. The Company previously accounted for its 50% interest in NGEN as an equity method investment. The Company remeasured this equity interest to fair value at the acquisition date and recognized a loss of $5 in the Consolidated Statements of Income under “equity-method investment activity, net.”



	The following table summarizes the consideration paid to acquire NGEN and the fair value of assets acquired and liabilities assumed as of the acquisition date, as well as the fair value of the Company’s existing investment in NGEN as of the acquisition date:




	Cash consideration		$	158
	Acquisition date fair value of the Company’s investment in NGEN held before the business combination			158
	Total		$	316
	Recognized amounts of identifiable assets acquired and liabilities assumed
	Cash and cash equivalents		$	432
	Current assets			402
	Tangible fixed assets			27
	Other non-current assets			89
	Current liabilities			(337	)
	Other liabilities			(274	)
	Total identifiable net assets acquired		$	339
	Gain recognized on acquisition			(23	)
	Total		$	316
	(c) Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited

	On February 6, 2013, the Company acquired 100% of the outstanding membership interest in Jawood Business Process Solutions, LLC, a Michigan limited liability company (“Jawood”) for cash consideration of $51,000, subject to adjustment based on closing date net working capital, indebtedness and cash and cash equivalents. There are no contingent consideration arrangements in connection with the acquisition.

	The transaction also included the acquisition of 100% of the outstanding shares of Felix Software Solutions Private Limited, a company organized under the laws of India (“Felix”), for cash consideration of $2,295, subject to adjustment based on closing date net working capital. There are no contingent consideration arrangements in connection with the acquisition of Felix.

	Jawood and Felix (collectively referred to as the “Jawood business”) are, respectively, U.S. and India based providers of business consulting and information technology services to the healthcare payer industry. Felix is a key sub-contractor to Jawood. This transaction strengthens the Company’s solutions and services offerings in the healthcare payer market.

	Pursuant to the terms of the acquisition agreements with the respective sellers, the purchase consideration for the Jawood business is comprised of the following:




Base purchase price		$	53,295
Closing date net working capital adjustment			(3,821	)
Closing date indebtedness adjustment			(2,202	)
Closing date cash adjustment			1,304
Seller expenses			(1,379	)
Total purchase price		$	47,197


During the period ended September 30, 2013, the Company recorded a measurement period adjustment that resulted in a decrease in the purchase consideration by $1,089 with a corresponding change in 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, were recorded during the period ended September 30, 2013. The total amount paid by the Company to acquire the Jawood business, net of cash acquired of $1,364 and including seller expenses amounting to $1,379, was $47,212.

The acquisition of the Jawood business has been accounted for under the acquisition method of accounting in accordance with ASC 805, Business Combinations. The assets and liabilities of the Jawood business are recorded at fair value as of the date of acquisition. The following table summarizes the allocation of the purchase price based on the fair value of assets acquired and liabilities assumed as of the date of acquisition including measurement period adjustments:




Purchase price		$	47,197
Acquisition related costs included in selling, general and administrative expenses			310
Recognized amounts of identifiable assets acquired and liabilities assumed
Cash and cash equivalents		$	1,364
Current assets			6,477
Tangible fixed assets			704
Intangible assets			11,200
Other non-current assets			548
Current liabilities			(7,866	)
Long term liabilities			(56	)
Total identifiable net assets acquired		$	12,371
Goodwill			34,826
Total		$	47,197
Goodwill representing the excess of the purchase price over the net assets acquired has been allocated to the India reporting unit and is deductible for tax purposes to the extent of $32,656. The amortizable intangible assets are being amortized over their estimated useful lives using a method of amortization that reflects the expected pattern in which the economic benefits of the intangible assets will be consumed or otherwise realized. The value and estimated useful lives of the intangible assets are as follows:




		Value				Estimated useful life
Customer related intangible assets		$	10,200				1 – 7 years
Marketing related intangible assets			1,000				1 – 5 years
The weighted average amortization period in respect of the acquired intangible assets is 6 years.

The results of operations of the Jawood business and the fair value of its assets and liabilities have been included in the Company’s Consolidated Financial Statements with effect from February 6, 2013, the date of acquisition.



(d) Atyati Technologies Private Limited

On September 4, 2012, the Company acquired 100% of the outstanding common and preferred stock of Atyati Technologies Private Limited, an Indian private limited company (“Atyati”), a cloud-hosted technology platform provider for the rural banking sector in India. This acquisition gives the Company a platform-based banking solution for the rural and semi-rural consumer market.

The Company acquired Atyati for initial cash consideration of $19,368, subject to adjustment based on closing date final working capital. The acquisition agreement also provided for additional deferred consideration which had a discounted value of $2,539 and earn-out consideration (ranging from $0 to $14,372 based on gross profit for the year ending March 31, 2014) which had an estimated fair value of $1,487.

Pursuant to the terms of the acquisition agreement with the sellers, the purchase consideration is comprised of the following:




Cash consideration		$	19,368
Acquisition date discounted value of deferred consideration			2,539
Acquisition date fair value of earn-out consideration			1,487
Working capital adjustment			—
Total purchase price		$	23,394
During the period ended June 30, 2013, the Company recorded a measurement period adjustment which resulted in a decrease in the deferred tax asset of $827, an increase in other non-current assets of $194 and an increase in goodwill of $633. 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, were recorded during the period ended June 30, 2013.

The acquisition has been accounted for under the acquisition method of accounting in accordance with ASC 805, Business Combinations. The assets and liabilities of Atyati were recorded at fair value as of the date of acquisition. The following table summarizes the allocation of the purchase price based on the fair value of assets acquired and liabilities assumed as of the date of acquisition including measurement period adjustments:




Purchase price		$	23,394
Acquisition related costs included in selling, general and administrative expenses			164
Recognized amounts of identifiable assets acquired and liabilities assumed
Cash and cash equivalents		$	2,000
Current assets			5,265
Tangible fixed assets			426
Intangible assets			8,767
Deferred tax asset/ (liability), net			(2,557	)
Other non-current assets			369
Current liabilities			(3,424	)
Short term borrowings			(654	)
Other liabilities			(737	)
Total identifiable net assets acquired		$	9,455
Goodwill			13,939
Total		$	23,394


Goodwill recorded in connection with the Atyati acquisition amounted to $13,939, representing the excess of the purchase price over the net assets (including deferred taxes) acquired, has been allocated to the India reporting unit and is not deductible for tax purposes. The amortizable intangible assets are being 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.

The value and estimated useful lives of the intangibles are as follows:




		Value				Estimated useful life
Customer related intangibles		$	5,408				4 – 9 years
Other intangibles			3,359				7 years
The weighted average amortization period in respect of the acquired intangible assets is 7 years. The results of operations of Atyati and the fair value of its assets and liabilities have been included in the Company’s Consolidated Financial Statements with effect from September 4, 2012, the date of acquisition.

(e) Triumph Engineering, Corp. and Triumph On-Demand, Inc.

On August 17, 2012, the Company acquired 100% of the outstanding equity interest in Triumph Engineering, Corp. and Triumph On-Demand Inc., both Ohio corporations (collectively the “Triumph Companies”). The Triumph Companies are U.S. based providers of engineering services to the aviation, energy, and oil and gas industries. This acquisition provides the Company with capabilities in the engineering services space.

The Company acquired the Triumph Companies for initial cash consideration of $3,600, subject to adjustment based on working capital and closing indebtedness. The acquisition agreement provided for additional deferred consideration which had a discounted value of $379, and earn-out consideration (ranging from $0 to $4,500 based on gross profit for the years ending December 31, 2013 and 2014) which had an estimated fair value of $3,256.

Pursuant to the terms of the acquisition agreement with the seller, the purchase consideration is comprised of the following:




Cash consideration		$	3,600
Acquisition date fair value of deferred consideration			379
Acquisition date fair value of earn-out consideration			3,256
Working capital adjustment			(848	)
Closing indebtedness adjustment			(941	)
Total purchase price		$	5,446
During the period ended June 30, 2013, the Company recorded a measurement period adjustment which resulted in a decrease in the purchase consideration of $13 with a corresponding change in goodwill.

The acquisition has been accounted for under the acquisition method of accounting in accordance with ASC 805, Business Combinations. The assets and liabilities of the Triumph Companies were recorded at fair value as of the date of acquisition. The following table summarizes the allocation of the purchase price based on the fair value of assets acquired and liabilities assumed as of the date of acquisition:




Purchase price		$	5,446
Acquisition related costs included in selling, general and administrative expenses			134
Recognized amounts of identifiable assets acquired and liabilities assumed
Cash and cash equivalents		$	312
Current assets			1,708
Tangible fixed assets			175
Intangible assets			382
Deferred tax asset/ (liability), net			(565	)
Current liabilities			(720	)
Short term borrowing			(350	)
Total identifiable net assets acquired		$	942
Goodwill			4,504
Total		$	5,446


Goodwill recorded in connection with the acquisition of the Triumph Companies amounted to $4,504, representing the excess of the purchase price over the net assets (including deferred taxes) acquired, has been allocated to the India reporting unit and is not deductible for tax purposes. The amortizable intangible assets are being 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. The value and estimated useful lives of the intangibles are as follows:




		Value				Estimated useful life
Customer related intangibles		$	382				1 to 10 years
The weighted average amortization period in respect of the acquired intangible assets is 8 years. The results of operations of the Triumph Companies and the fair value of the assets and liabilities are included in the Company’s Consolidated Financial Statements with effect from August 17, 2012, the date of acquisition.

(f) Accounting Plaza B.V.

On April 25, 2012, the Company acquired 100% of the outstanding equity interest in Accounting Plaza B.V., a private limited liability company organized under the laws of the Netherlands (“Accounting Plaza”). Accounting Plaza is a provider of finance and accounting, human resources and PeopleSoft ERP services. This acquisition strengthens the Company’s domain expertise in the retail industry and significantly expands its presence in Europe.

The Company acquired Accounting Plaza for cash consideration of $38,698 subject to adjustments based on the transfer of pension funds, underfunding in pension funds, and sellers’ warranty breaches including certain other transactions and transaction costs. There are no contingent consideration arrangements in connection with the acquisition.

Pursuant to the terms of the acquisition agreement with the sellers, the purchase consideration is comprised of the following:




Base consideration		$	38,698
Adjustment for transfer of pension funds			—
Adjustment for underfunding in pension funds			—
Adjustment for sellers warranty breaches and certain other transactions			—
Adjustment for transaction costs			—
Purchase consideration		$	38,698
During the period ended March 31, 2013, the Company recorded a measurement period adjustment which resulted in a $107 increase in the purchase consideration with a corresponding increase in 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, were recorded during the period ended March 31, 2013.



The acquisition has been accounted for under the acquisition method of accounting in accordance with ASC 805, Business Combinations. The assets and liabilities of Accounting Plaza were recorded at fair value as of the date of acquisition. The following table summarizes the allocation of the purchase consideration based on the fair value of assets acquired and liabilities assumed as of the date of acquisition including measurement period adjustments:




Purchase consideration		$	38,698
Acquisition related costs included in selling, general and administrative expenses			434
Recognized amounts of identifiable assets acquired and liabilities assumed
Cash and cash equivalents		$	1,664
Current assets			11,327
Tangible fixed assets			2,010
Intangible assets			13,138
Deferred tax asset/ (liability), net			(2,711	)
Other non-current assets			971
Current liabilities			(9,062	)
Other liabilities			(4,188	)
Total identifiable net assets acquired		$	13,149
Goodwill			25,549
Total		$	38,698
The fair value of the current assets acquired included trade receivables with a fair value of $9,744. The gross amount due was $9,917, of which $173 was expected to be uncollectable.

Goodwill representing the excess of the purchase price over the fair value of the net assets (including deferred taxes) acquired is not deductible for tax purposes and has been allocated to the Europe reporting unit.

The amortizable intangible assets acquired are being 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. The value and estimated useful life of the intangible asset are as follows:




		Value				Estimated useful life
Customer related intangible		$	13,138				3 – 10 years
The weighted average amortization period in respect of the acquired intangible assets is 7 years. The results of operations of Accounting Plaza and the fair value of the assets and liabilities have been included in the Company’s Consolidated Financial Statements with effect from April 25, 2012, the date of acquisition.



B. Earn-out consideration and deferred consideration

The Company acquired Akritiv Technologies, Inc. (“Akritiv”), High Performance Partners, LLC (“HPP”), Empower Research, LLC (“Empower”), Atyati and the Triumph Companies on March 14, 2011, August 24, 2011, October 3, 2011, September 4, 2012 and August 17, 2012, respectively. The terms of the acquisition agreements for these business acquisitions provided for payment of additional earn-out consideration if certain future events or conditions are met. These earn-outs were recorded as liabilities based on their fair values as of the acquisition dates. The Company evaluates the fair value of earn-out consideration for the respective acquisitions for changes at each reporting period. As of September 30, 2013, the Company re-measured the fair value of such earn-out consideration with corresponding changes in the Consolidated Statements of Income as follows:




Decrease in fair value of earn-out consideration for Empower		$	(145	)
Decrease in fair value of earn-out consideration for Triumph Companies			(2,150	)
Decrease in fair value of earn-out consideration for Atyati			(1,794	)
Decrease in fair value of earn-out consideration for HPP			(363	)
		$	(4,452	)
Further, during the period ended September 30, 2013, the Company paid earn-out consideration of $85, $3,274 and $1,499 for HPP, Akritiv and Empower, respectively, due to the fulfillment of certain earn-out conditions set forth in the acquisition agreements. Additionally, during the period ended September 30, 2013, the Company paid deferred consideration of $811 to the Empower sellers pursuant to the terms of the acquisition agreement.

C. Divestitures

(a) Hello Communications (Shanghai) Co., Ltd.

On February 22, 2013, the Company completed the divestiture of Hello Communications (Shanghai) Co., Ltd., a subsidiary engaged in the business of providing offshore tele-sales and other voice-based support services to telecom carriers and IT/telecom equipment manufacturers in Asia, for cash consideration of $998 resulting in loss of $447. The expected loss on the sale was recorded within other income (expense), net in the Consolidated Statements of Income for the year ended December 31, 2012 and was not materially different from the actual realized loss. The balance of cash and cash equivalents of Hello Communications (Shanghai) Co., Ltd. on the date of sale was $2,047, resulting in a net cash outflow of $1,049. The results of operations of Hello Communications (Shanghai) Co., Ltd. are not material to the Company’s results of operations or financial condition and, therefore, are not reflected as discontinued operations for the periods presented.

(b) Clearbizz B.V.

On September 13, 2013, the Company completed the divestiture of Clearbizz, B.V., a subsidiary engaged in the business of providing electronic invoicing services in the Netherlands for cash consideration of $1 resulting in a loss of $1,184, which was recorded within other income (expense), net in the Consolidated Statements of Income. The results of operations of Clearbizz B.V. are not material to the Company’s results of operations or financial condition and, therefore, are not reflected as discontinued operations for the periods presented.

(c) Gantthead.com, Inc.

During the period ended June 30, 2013, the Company decided to divest or discontinue Gantthead.com, Inc., a subsidiary engaged in the business of operating an online technology portal for project management. An amount of $2,336 has been reserved within other income (expense), net in the Consolidated Statements of Income representing an estimated loss on the expected divestiture of Gantthead.com, Inc. The results of operations of Gantthead.com, Inc. are not material to the Company’s results of operations or financial condition and, therefore, are not reflected as discontinued operations for the periods presented.

Cash_and_Cash_Equivalents

Cash and Cash Equivalents	9 Months Ended
Cash and Cash Equivalents	Sep. 30, 2013
Cash and Cash Equivalents	'
	4. Cash and cash equivalents

	Cash and cash equivalents as of December 31, 2012 and September 30, 2013 comprise:


		As of December 31, 2012		As of September 30, 2013
	Deposits with banks	$	283,660	$	245,909
	Other cash and bank balances		175,568		235,589

	Total	$	459,228	$	481,498

	Cash and cash equivalents as of December 31, 2012 and September 30, 2013 include restricted cash balances of $628 and $874, respectively. Restrictions primarily consist of margin balances against bank guarantees and deposits for foreign currency advances on which the bank has created a lien.

Accounts_Receivable_Net_of_Res

Accounts Receivable, Net of Reserve for Doubtful Receivables	9 Months Ended
	Sep. 30, 2013
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:


		As of December 31,			As of September 30,
		2012			2013
	Opening balance as of January 1	$	8,704		$	9,073
	Additions due to acquisitions		184			—
	Additions charged to cost and expense		3,878			8,919
	Deductions		(3,693	)		(3,473	)

	Closing balance	$	9,073		$	14,519

	Accounts receivable were $461,062 and $491,579 and the reserves for doubtful receivables were $9,073 and $14,519, resulting in net accounts receivable balances of $451,989 and $477,060 as of December 31, 2012 and September 30, 2013, respectively. In addition, accounts receivable due after one year of $19,140 and $17,006 as of December 31, 2012 and September 30, 2013, respectively, are included under other assets in the Consolidated Balance Sheets.
	Accounts receivable from related parties were $64 and $63, and the reserve for doubtful receivables was $35 and $0, resulting in net accounts receivable balances of $29 and $63, as of December 31, 2012 and September 30, 2013, respectively.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
Fair Value Measurements	Sep. 30, 2013
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, 2012 and September 30, 2013:


			As of December 31, 2012
			Fair Value Measurements at Reporting Date Using
					Quoted Prices in Active			Significant Other		Significant Other
					Markets for Identical			Observable		Unobservable
					Assets			Inputs		Inputs
			Total		(Level 1)			(Level 2)		(Level 3)
	Assets
	Derivative Instruments (Note a)		$	10,645	$	—		$	10,645	$	—

	Total		$	10,645	$	—		$	10,645	$	—

	Liabilities
	Derivative Instruments (Note b)		$	174,076	$	—		$	174,076	$	—

	Total		$	174,076	$	—		$	174,076	$	—



			As of September 30, 2013
			Fair Value Measurements at Reporting Date Using
					Quoted Prices in Active			Significant Other		Significant Other
					Markets for Identical			Observable		Unobservable
					Assets			Inputs		Inputs
			Total		(Level 1)			(Level 2)		(Level 3)
	Assets
	Derivative Instruments (Note a)		$	6,768	$	—		$	6,768	$	—

	Total		$	6,768	$	—		$	6,768	$	—

	Liabilities
	Derivative Instruments (Note b)		$	277,459	$	—		$	277,459	$	—

	Total		$	277,459	$	—		$	277,459	$	—


	(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 following table sets forth the reconciliation of loans held for sale that were outstanding as of September 30, 2012 but settled during the year ended December 31, 2012, which were measured at fair value using significant unobservable inputs:


			Three months ended		Nine months ended
			September 30, 2012		September 30, 2012
	Opening balance, net		$	360	$	469
	Impact of fair value included in earnings			—		(108	)
	Settlements			—		(1	)

	Closing balance, net		$	360	$	360

	The Company values its derivative instruments based on market observable inputs including both forward and spot prices for respective currencies. The quotes are taken from an independent market database.

Derivative_Financial_Instrumen

Derivative Financial Instruments	9 Months Ended
Derivative Financial Instruments	Sep. 30, 2013
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 fifty-one 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
			(Note a)								(liability) (Note b)
			As of				As of				As of				As of
			December 31,				September 30,				December 31,				September 30,
			2012				2013				2012				2013
	Foreign exchange forward contracts denominated in:
	United States Dollars (sell) Indian Rupees (buy)		$	1,706,000			$	1,472,000			$	(160,432	)		$	(269,392	)
	United States Dollars (sell) Mexican Peso (buy)			8,400				12,300				306				(422	)
	United States Dollars (sell) Philippines Peso (buy)			58,800				56,850				2,237				(1,723	)
	Euro (sell) United States Dollars (buy)			79,501				45,134				(420	)			(1,836	)
	Euro (sell) Hungarian Forints (buy)			9,968				5,598				(10	)			51
	Euro (sell) Romanian Leu (buy)			64,870				63,689				(645	)			1,433
	Japanese Yen (sell) Chinese Renminbi (buy)			26,214				29,573				1,451				2,046
	Pound Sterling (sell) United States Dollars (buy)			92,165				74,149				(2,494	)			(2,791	)
	Australian Dollars (sell) United States Dollars (buy)			60,626				59,450				(3,424	)			1,943

											$	(163,431	)		$	(270,691	)


	(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 instruments 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 inter-company 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				As of				As of				As of
			December 31,				September 30,				December 31,				September 30,
			2012				2013				2012				2013
	Assets
	Prepaid expenses and other current assets		$	6,972			$	4,790			$	1,742			$	318
	Other assets		$	1,931			$	1,660			$	—			$	—
	Liabilities
	Accrued expenses and other current liabilities		$	60,229			$	99,486			$	1,417			$	11,402
	Other liabilities		$	112,430			$	166,571			$	—			$	—

	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 affect are summarized below:


			Three months ended September 30, 2012												Three months ended September 30, 2013												Nine months ended September 30, 2012												Nine months ended September 30, 2013
			Before-				Tax				Net of				Before-				Tax				Net of				Before-				Tax				Net of				Before-				Tax		Net of tax
			Tax				(Expense)				tax				Tax				(Expense)				tax				Tax				(Expense)				tax				Tax				(Expense)		Amount
			amount				or Benefit				Amount				amount				or				Amount				amount				or				Amount				amount				or
																			Benefit												Benefit												Benefit
	Opening balance		$	(255,562	)		$	90,440			$	(165,122	)		$	(207,373	)		$	73,239			$	(134,134	)		$	(203,006	)		$	71,125			$	(131,881	)		$	(163,756	)		$	59,070	$	(104,686	)
	Net gains (losses) reclassified into statement of income on completion of hedged transactions			(15,813	)			5,390				(10,423	)			(23,185	)			8,759				(14,426	)			(22,654	)			7,643				(15,011	)			(44,070	)			17,061		(27,009	)
	Changes in fair value of effective portion of outstanding derivatives, net			99,280				(35,676	)			63,604				(75,420	)			27,031				(48,389	)			39,883				(14,108	)			25,775				(139,922	)			49,502		(90,420	)

	Gain (loss) on cash flow hedging derivatives, net			115,093				(41,066	)			74,027				(52,235	)			18,272				(33,963	)			62,537				(21,751	)			40,786				(95,852	)			32,441		(63,411	)

	Closing balance as of September 30		$	(140,469	)		$	49,374			$	(91,095	)		$	(259,608	)		$	91,511			$	(168,097	)		$	(140,469	)		$	49,374			$	(91,095	)		$	(259,608	)		$	91,511	$	(168,097	)


	The gains or losses recognized in other comprehensive income (loss) and their effect on financial performance are summarized below:-


Derivatives		Amount of Gain								Location of		Amount of Gain (Loss) reclassified from OCI into																Location of		Amount of Gain (Loss) recognized in income on
in Cash		(Loss) recognized in								Gain (Loss)		Statement of Income (Effective Portion)																Gain (Loss)		Derivative (Ineffective Portion and
Flow		OCI on Derivatives								reclassified																		recognized in		Amount excluded from Effectiveness Testing)
Hedging		(Effective Portion)								from OCI into																		Income on
Relationships										Statement of																		Derivatives
										Income																		(Ineffective
										(Effective																		Portion and
										Portion)																		Amount
																												excluded
																												from
																												Effectiveness
																												Testing)
		Nine months										Three months								Nine months										Three months								Nine months
		ended September 30,										ended September 30,								ended September 30,										ended September 30,								ended September 30,
		2012				2013						2012				2013				2012				2013						2012				2013				2012				2013
Forward foreign exchange contracts		$	39,883			$	(139,922	)		Revenue		$	(1,144	)		$	2,590			$	(3,587	)		$	5,957			Foreign exchange (gains) losses, net		$	—			$	—				—				—
										Cost of revenue			(11,614	)			(20,801	)			(15,025	)			(40,417	)
										Selling, general and administrative expenses			(3,055	)			(4,974	)			(4,042	)			(9,610	)

		$	39,883			$	(139,922	)				$	(15,813	)		$	(23,185	)		$	(22,654	)		$	(44,070	)				$	—			$	—			$	—			$	—



Non designated Hedges


Derivatives not designated		Location of (Gain) Loss		Amount of (Gain) Loss recognized in Statement of
as hedging instruments		recognized in Statement of Income on		Income on Derivatives
		Derivatives		Three months ended								Nine months ended
				September 30,								September 30,
				2012				2013				2012				2013
Forward foreign exchange contracts (Note a)		Foreign exchange (gains) losses, net		$	(10,588	)		$	11,359			$	(9,002	)		$	20,944

				$	(10,588	)		$	11,359			$	(9,002	)		$	20,944


(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 inter-company 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.

Property_Plant_and_Equipment_N

Property, Plant and Equipment, Net	9 Months Ended
Property, Plant and Equipment, Net	Sep. 30, 2013
Property, Plant and Equipment, Net	'
	8. Property, plant and equipment, net
	Property, plant and equipment, net consist of the following:


		As of December 31,			As of September 30,
		2012			2013
	Property, plant and equipment, gross	$	513,540		$	486,112
	Less: Accumulated depreciation and amortization		(313,178	)		(317,738	)

	Property, plant and equipment, net	$	200,362		$	168,374

	Depreciation expense on property, plant and equipment for the nine months ended September 30, 2012 and 2013 was $33,754, and $35,164, respectively, and for the three months ended September 30, 2012 and 2013 was $11,332 and $11,747, respectively. The amount of computer software amortization for the nine months ended September 30, 2012 and 2013 was $8,840, and $7,541, respectively, and for the three months ended September 30, 2012 and 2013 was $2,881 and $2,438, respectively.
	The above depreciation and amortization expense includes the effect of reclassification of foreign exchange (gains) losses related to the effective portion of foreign currency derivative contracts amounting to $985 and $2,435 for the nine months ended September 30, 2012 and 2013, respectively, and $750 and $1,233 for the three months ended September 30, 2012 and 2013, respectively.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	9 Months Ended
Goodwill and Intangible Assets	Sep. 30, 2013
Goodwill and Intangible Assets	'
	9. Goodwill and intangible assets
	The following table presents the changes in goodwill for the year ended December 31, 2012 and nine months ended September 30, 2013:


		As of December 31,			As of September 30,
		2012			2013
	Opening balance	$	925,339		$	956,064
	Goodwill relating to acquisitions consummated during the period		43,265			37,918
	Adjustment to preliminary purchase accounting for acquisitions		(3,213	)		(362	)
	Effect of exchange rate fluctuations		(9,327	)		(43,196	)

	Closing balance	$	956,064		$	950,424


	The total amount of goodwill deductible for tax purposes is $6,779 and $39,260 as of December 31, 2012 and September 30, 2013, 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, 2012								As of September 30, 2013
		Gross			Accumulated			Net		Gross		Accumulated		Net
		carrying			amortization					carrying		amortization
		amount								amount
	Customer-related intangible assets	$	291,735		$	206,987		$	84,748	$	286,716	$	207,466	$	79,250
	Marketing-related intangible assets		40,386			18,801			21,585		40,654		20,026		20,628
	Contract-related intangible assets		1,182			1,182			—		1,028		1,028		—
	Other intangible assets		7,069			1,015			6,054		9,075		2,021		7,054

		$	340,372		$	227,985		$	112,387	$	337,473	$	230,541	$	106,932

	Amortization expenses for intangible assets as disclosed in the consolidated statements of income under amortization of acquired intangible assets for the nine months ended September 30, 2012 and 2013 were $17,094 and $17,603, respectively, and for the three months ended September 30, 2012 and 2013 were $6,014 and $5,867, respectively. Intangible assets recorded for the 2004 Reorganization include the incremental value of the minimum volume commitment from GE, entered into contemporaneously with the 2004 Reorganization, over the value of the pre-existing customer relationship with GE. The amortization of this intangible asset for the nine months ended September 30, 2012 and 2013 was $55 and $0, respectively, and for the three months ended September 30, 2012 and 2013 was $17 and $0, respectively, and has been reported as a reduction of revenue.

Employee_Benefit_Plans

Employee Benefit Plans	9 Months Ended
Employee Benefit Plans	Sep. 30, 2013
Employee Benefit Plans	'
	10. 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 addition, 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 and nine months ended September 30, 2012 and 2013 include the following components:




		Three months ended September 30,						Nine months ended September 30,
		2012			2013			2012			2013
	Service costs	$	693		$	1,528		$	2,667		$	3,274
	Interest costs		331			869			1,246			1,756
	Amortization of actuarial loss		193			200			532			650
	Expected return on plan assets		(187	)		(298	)		(599	)		(727	)

	Net Gratuity Plan costs	$	1,030		$	2,299		$	3,846		$	4,953



	Defined contribution plans

	During the three months and nine months ended September 30, 2012 and 2013, the Company contributed the following amounts to defined contribution plans in various jurisdictions:




		Three months ended						Nine months ended
		September 30,						September 30,
		2012			2013			2012			2013
	India	$	3,450		$	3,446		$	10,367		$	10,935
	U.S.		696			620			2,462			2,561
	U.K.		345			405			1,096			1,352
	Hungary		6			6			52			18
	China		3,092			3,899			8,670			10,781
	Mexico		4			3			25			23
	Morocco		33			20			122			71
	South Africa		82			46			246			172
	Hong Kong		10			4			27			15
	Philippines		5			3			11			11
	Singapore		—			2			—			8
	Netherlands		411			345			840			1,427
	Japan		107			611			320			1,577

	Total	$	8,241		$	9,410		$	24,238		$	28,951

Stockbased_Compensation

Stock-based Compensation	9 Months Ended
Stock-based Compensation	Sep. 30, 2013
Stock-based Compensation	'
	11. 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, directors and certain other persons associated with the Company.
	From the date of adoption of the 2007 Omnibus Plan on July 13, 2007, the 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.

	The stock-based compensation costs relating to the foregoing plans during the nine months ended September 30, 2012 and 2013 were $22,745 and $21,761 respectively, and for the three months ended September 30, 2012 and 2013, were $5,579 and $ 5,258 respectively. Stock-based compensation costs for the nine months and three months ended September 30, 2013 have been reduced by $1,670 due to a change in the probability of achievement of the performance conditions for outstanding performance units. These costs have been allocated to cost of revenue and selling, general, and administrative expenses.
	The following table shows the significant assumptions used in connection with the determination of the fair value of options granted in the nine months ended September 30, 2013. No options were granted in the nine months ended September 30, 2012.


			Nine months ended
			September 30, 2013
	Dividend Yield			0	%
	Expected life (in months)			84
	Risk free rate of interest			1.55	%
	Volatility			39.39	%
	A summary of options activity during the nine months ended September 30, 2013 is set out below:


			Nine months ended September 30, 2013
			Shares arising				Weighted average			Weighted average			Aggregate
			out of options				exercise price			remaining			intrinsic
										contractual life			value
										(years)
	Outstanding as of January 1, 2013			12,413,298			$	9.29			4.2
	Granted			3,483,000				19.35
	Forfeited			(63,056	)			10.47
	Expired			(67,978	)			13.79
	Exercised			(3,784,851	)			8.76						38,149

	Outstanding as of September 30, 2013			11,980,413			$	12.35			5.32		$	80,652

	Vested as of September 30, 2013 and expected to vest thereafter (a)			11,596,240			$	12.07			5.32		$	80,471
	Vested and Exercisable as of September 30, 2013			7,547,192			$	9.27			3.24		$	72,524
	Weighted average grant date fair value of grants during the period		$	19.35


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

	As of September 30, 2013, the total remaining unrecognized stock-based compensation costs for options expected to vest amounted to $25,728, which will be recognized over the weighted average remaining requisite vesting period of 4.0 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. The fair value of each RSU is the market price of one common share of the Company on the date of grant. The RSUs granted to date have vesting schedules of six 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 nine months ended September 30, 2013 is set out below:


			Nine months ended September 30, 2013
			Number of Restricted Share				Weighted Average Grant Date
			Units				Fair Value
	Outstanding as of January 1, 2013			1,688,402			$	13.74
	Granted			91,623				19.52
	Vested*			(294,451	)			14.49
	Forfeited			(190,665	)			13.62

	Outstanding as of September 30, 2013			1,294,909			$	14

	Expected to vest (a)			1,165,351

	(a)	RSUs expected to vest reflect an estimated forfeiture rate.
	*	Vested RSUs have been net settled upon vesting by issuing 188,966 shares (net of minimum statutory withholding taxes).
	During the year ended December 31, 2011, 102,000 RSUs vested, the shares in respect of which were issued in January 2013 (100,800 shares, net of minimum statutory withholding taxes). Shares in respect of an additional 13,719 RSUs reflecting an adjustment to 102,000 vested RSUs on account of the special cash dividend were issued in January 2013 (13,557, net of minimum statutory withholding taxes).

	As of December 31, 2012, 4,000 RSUs vested, the shares in respect of which were issued in April 2013 (1,819, net of minimum statutory withholding taxes). Shares in respect of an additional 533 RSUs reflecting an adjustment to 4,000 vested RSUs on account of the special cash dividend were issued in April 2013 (240, net of minimum statutory withholding taxes).
	44,286 RSUs vested as of December 31, 2012, the shares in respect of which will be issued on December 31, 2013, after withholding shares to the extent of the minimum statutory withholding taxes.
As of September 30, 2013, the total remaining unrecognized stock-based compensation costs related to RSUs amounted to $12,427, which will be recognized over the weighted average remaining requisite vesting period of 1.9 years.
Performance Units
The Company also grants stock-based awards in the form of Performance Units, or PUs, under the 2007 Omnibus Plan. The Company granted PUs, each of which represents the right to receive one common share 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 or graded vesting. For awards with cliff vesting, the compensation expense is recognized on a straight-line basis over the vesting terms. For awards with graded vesting, the compensation expense is recognized over the vesting term of each separately vesting portion. Over the performance period, the number of shares that will be issued will be 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 as an expense will be based on a comparison of the final performance metrics to the specified targets.
A summary of PUs activity during the nine months ended September 30, 2013 is set out below:


		Nine months ended September 30, 2013
		Number of				Weighted			Maximum Shares Eligible to
		Performance Units				Average Grant			Receive
						Date Fair
						Value
Outstanding as of January 1, 2013			3,041,511			$	13.26			4,402,597
Granted			2,025,090				18.57			3,694,635
Vested			—				—			—
Forfeited			(200,654	)			15.13			(256,064	)
Addition due to achievement of higher than target performance goals*			297,911				17.5
Reduction due to achievement of lower than maximum performance goals**										(373,702	)

Outstanding as of September 30, 2013			5,163,858			$	15.51			7,467,466

Expected to vest (a)			2,542,867

(a)	PUs expected to vest are based on the probable achievement of the performance targets after considering an estimated forfeiture rate
*	Represents the additional award of 22.2% of the target shares on account of the achievement of higher than target performance for the PUs granted in March 2012.
**	Represents a 27.8% reduction in the maximum shares eligible to vest on account of the certification of the performance goals for the PUs granted in 2012.

For the PUs granted in August 2010, vesting for the year ended December 31, 2011 (including the PUs issued as an adjustment on account of the special cash dividend) has taken place at 128.9% of the target shares (243,781 vested shares) after the compensation committee’s certification of the achievement of the performance goals. Shares in respect of these PUs were issued in January 2013 (156,511, net of minimum statutory withholding taxes).
The PUs granted in March 2010 (including the PUs issued as an adjustment on account of the special cash dividend) vested at 90.9% of the target shares (503,969 shares) after the compensation committee’s certification of the performance goals achieved for the performance period based on the Company’s audited consolidated financial statements. The shares in respect of these PUs were issued in March 2013 (334,922) and April 2013 (4,679), net of minimum statutory withholding taxes.
For the PUs granted in August 2010 vesting for the year ended December 31, 2012 has taken place at 122.2% of the target shares (231,029 vested shares) based on the compensation committee’s certification of achievement of the performance goals for the performance period based on the Company’s audited consolidated financial statements. The shares in respect of these PUs will be issued on December 31, 2013, net of minimum statutory withholding taxes.
As of September 30, 2013, the total remaining unrecognized stock-based compensation costs related to PUs amounted to $9,429, which will be recognized over the weighted average remaining requisite vesting period of 1.1 years.
In the first quarter of 2011, the compensation committee of the board of directors of the Company modified the performance metrics for the performance grants made to employees in 2010 from Revenue and EBITDA growth to revenue and adjusted operating income growth.


		Original Performance Target							Modified Performance Target
Performance Level		Revenue				EBITDA			Revenue			Adjusted Income from
Performance Level		Growth				Growth			Growth			Operation growth
Outstanding			20	%			20	%		20	%		20	%
Target			15	%			15	%		15	%		15	%
Threshold			10	%			10	%		10	%		10	%
For the August 2010 performance grant to the Company’s former CEO, who assumed the role of Non-Executive Vice-Chairman as of June 17, 2011, in addition to the modification made to the performance metrics from revenue and EBITDA growth to revenue and adjusted operating income growth, because the award vests based on annual performance targets whereas the awards to other employees vest based on average performance over three years, the performance targets have been revised to make them consistent with the performance unit grants made to other employees in the first quarter of 2011.


		Original Performance Target							Modified Performance Target
Performance Level		Revenue				EBITDA			Revenue			Adjusted Income from
Performance Level		Growth				Growth			Growth			Operation growth
Outstanding			20	%			20	%		17	%		16	%
Target			15	%			15	%		12.5	%		12.5	%
Threshold			10	%			10	%		8	%		7	%

As of the date of the above modifications, an incremental compensation cost of $4,109 was determined and was to be recognized over a period of 21.5 months, starting from March 2011 to December 31, 2012.
Under the 2007 Omnibus Plan, the definition of change of control includes the acquisition by any person, corporation or other entity or group other than GA, OH, GE or any of their affiliates of 25% or more of the voting securities of the Company. The purchase by Bain Capital of Company shares from GA and OH would have constituted a change of control under the 2007 Omnibus Plan resulting in (1) accelerated vesting of the PUs granted in August 2010 to the former CEO (who since assumed the role of Non-Executive Vice-Chairman) and the PUs granted to the Company’s Chief Executive Officer in June 2011 and March 2012, (2) “double-trigger” vesting of the outstanding PUs granted in March 2010 and March 2011 based on an abbreviated performance period ending with the close of the Company’s fiscal quarter coincident with or immediately preceding the effective date of the Change of Control in the event of a termination without cause in the twenty-four months following a change of control and (3) “double-trigger” vesting of the outstanding PUs granted in March 2012 based on target performance in the event of a termination without cause in the twenty-four months following a change of control. However, because the Board of Directors determined that the Bain transaction was not the type of transaction intended to constitute a change of control, the 2007 Omnibus Plan was amended to provide that the contemplated transaction among Bain Capital, GA and OH would not constitute a change of control thereunder. In addition, the CEO and Non-Executive Vice-Chairman waived any accelerated vesting of their PUs and the affected employees consented to the amendment of the change of control definition. As a result of the foregoing, all PUs will continue to vest in accordance with their original terms.
The amendment to the 2007 Omnibus Plan was a modification to the PUs effective as of October 25, 2012, as a result of which 123 employees were affected and an incremental compensation cost of $5,500 was determined and will be recognized over a weighted average period of 1.85 years. The incremental compensation cost due to modification was a result of considering the original performance period for the determination of expected vesting compared to the abbreviated performance period for 2010 and 2011 grants and vesting at target for 2012 performance grants.
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 deduction at 90% of the fair value per share on the last business day of each purchase interval. The dollar amount of common shares purchased under the ESPP shall not exceed the greater of 15% of the participating employee’s base salary or $25 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 nine months ended September 30, 2012 and 2013, the number of common shares issued under the ESPP was 63,106 and 81,040, respectively.
The ESPP is considered compensatory under the FASB guidance on Compensation-Stock Compensation.
The compensation expense for the ESPP is recognized in accordance with the FASB guidance on Compensation-Stock Compensation. The compensation expense for the ESPP during the nine months ended September 30, 2012 and 2013 was, $111 and $170, respectively, and for the three months ended September 30, 2012 and 2013, was $34 and $54, respectively, and has been allocated to cost of revenue and selling, general, and administrative expenses.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
Earnings Per Share	Sep. 30, 2013
Earnings Per Share	'
	12. 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 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, common shares to be issued under the ESPP and performance units, 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 the effect was anti-dilutive is 4,366,422 and 2,327,000 for the nine months ended September 30, 2012 and 2013, respectively, and is 285,000 and 3,483,000 for the three months ended September 30, 2012 and 2013, respectively.




		Three months ended September 30,				Nine months ended September 30,
		2012		2013		2012		2013
	Net income available to Genpact Limited common shareholders	$	25,175	$	70,262	$	124,815	$	180,875
	Weighted average number of common shares used in computing basic earnings per common share		223,876,035		230,057,508		223,289,507		228,840,746
	Dilutive effect of stock-based awards		6,319,799		6,279,416		5,226,884		6,254,914

	Weighted average number of common shares used in computing dilutive earnings per common share		230,195,834		236,336,924		228,516,391		235,095,660

	Earnings per common share attributable to Genpact Limited common shareholders
	Basic	$	0.11	$	0.31	$	0.56	$	0.79
	Diluted	$	0.11	$	0.3	$	0.55	$	0.77

Shortterm_Borrowings

Short-term Borrowings	9 Months Ended
	Sep. 30, 2013
Short-term Borrowings	'
	13. 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, 2012 and September 30, 2013, the limits available were $18,489 and $16,393, respectively out of which $5,942 and $6,686 was utilized, representing non-funded drawdown.

		(b)	A fund-based and non–fund-based revolving credit facility of $260,000 acquired in May 2011 was fully prepaid and terminated on August 30, 2012 as described in note 14 below.

		(c)	A fund-based and non-fund-based revolving credit facility of $250,000 initially acquired in August 2012 was amended in June 2013 as described in note 14 below. A part of this amount was initially used for funding the special cash dividend paid in September 2012 and for the acquisition of Jawood in February 2013. As of December 31, 2012 and September 30, 2013, a total of $87,439 and $4,397, respectively, was utilized representing a funded drawdown of $80,000 and $0, respectively, and a non-funded drawdown of $7,439 and $4,397, respectively. This facility expires in August 2017 and the funded drawdown bears interest at LIBOR plus a margin of 2.50% as of September 30, 2013 compared to a margin of 3.25% as of December 31, 2012. The unutilized amount on the facility bears a commitment fee of 0.50%. Indebtedness under these facilities is secured by certain assets 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 nine months ended September 30, 2013, the Company is in compliance with all of the financial covenants.

Longterm_Debt

Long-term Debt	9 Months Ended
Long-term Debt	Sep. 30, 2013
Long-term Debt	'
	14. Long-term debt
	In May 2011, the Company obtained credit facilities aggregating $380,000 from a consortium of financial institutions to finance in part the acquisition of Headstrong and for general corporate purposes of the Company and its subsidiaries, including working capital requirements. The credit agreement provided for a $120,000 term loan and a $260,000 revolving credit facility. On August 30, 2012, the Company fully prepaid and terminated the $380,000 credit facility.
	In August 2012, the Company obtained credit facilities aggregating $925,000 from a consortium of financial institutions to (i) finance the repayment of the balance outstanding under the previous existing credit facility of $380,000, (ii) fund a portion of the special cash dividend, and (iii) for general corporate purposes of the Company and its subsidiaries, including working capital requirements. The credit agreement provided 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 the outstanding term loan under the previous credit facility amounting to $118,036 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 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 ending on August 30, 2019 and August 30, 2017, respectively.
	As of December 31, 2012 and September 30, 2013, the outstanding term loan, net of a debt amortization expense of $11,452 and $14,392, was $661,861 and $658,920 respectively. As of December 31, 2012, the term loan bears interest at LIBOR (LIBOR floor of 1%) plus an applicable margin of 3.25% p.a. As of September 30, 2013, the term loan bears interest at LIBOR (LIBOR floor of 0.75%) plus an applicable margin of 2.75% p.a. Indebtedness under the loan agreement is secured by certain assets. The amount outstanding on the term loan as of September 30, 2013 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
	2013	$	1,056
	2014	$	4,263
	2015	$	4,288
	2016	$	4,306
	2017	$	4,338
	2018	$	4,363
	2019	$	636,306

		$	658,920

Cost_of_Revenue

Cost of Revenue	9 Months Ended
Cost of Revenue	Sep. 30, 2013
Cost of Revenue	'
	15. Cost of revenue
	Cost of revenue consists of the following:


		Three months ended September 30,				Nine months ended September 30,
		2012		2013		2012		2013
	Personnel expenses	$	203,011	$	223,976	$	583,649	$	671,518
	Operational expenses		82,227		93,235		228,256		265,894
	Depreciation and amortization		12,015		12,078		36,035		36,317

		$	297,253	$	329,289	$	847,940	$	973,729

Selling_General_and_Administra

Selling, General and Administrative Expenses	9 Months Ended
Selling, General and Administrative Expenses	Sep. 30, 2013
Selling, General and Administrative Expenses	'
	16. Selling, general and administrative expenses
	Selling, general and administrative expenses consist of the following:


		Three months ended September 30,				Nine months ended September 30,
		2012		2013		2012		2013
	Personnel expenses	$	80,421	$	83,580	$	230,917	$	251,379
	Operational expenses		35,916		31,318		100,318		90,865
	Depreciation and amortization		2,199		2,107		6,559		6,388

		$	118,536	$	117,005	$	337,794	$	348,632

Other_Operating_Income_Expense

Other Operating (Income) Expense, Net	9 Months Ended
Other Operating (Income) Expense, Net	Sep. 30, 2013
Other Operating (Income) Expense, Net	'
	17. Other operating (income) expense, net




		Three months ended September 30,						Nine months ended September 30,
		2012			2013			2012			2013
	Other operating (income) expense	$	(789	)	$	(1,051	)	$	(2,302	)	$	(2,260	)
	Provision for impairment of capital work in progress / property, plant and equipment		2,121			—			2,121			2,392
	Change in fair value of earn out consideration and deferred consideration (relating to business acquisitions)		(1,930	)		(2,181	)		(1,930	)		(4,452	)

	Other operating (income) expense, net	$	(598	)	$	(3,232	)	$	(2,111	)	$	(4,320	)

Other_Income_Expense_Net

Other Income (Expense), Net	9 Months Ended
Other Income (Expense), Net	Sep. 30, 2013
Other Income (Expense), Net	'
	18. Other income (expense), net
	Other income (expense), net consists of the following:


			Three months ended September 30,						Nine months ended September 30,
			2012			2013			2012			2013
	Interest income		$	2,455		$	4,355		$	7,965		$	14,114
	Interest expense*			(11,022	)		(8,134	)		(17,987	)		(30,861	)
	Provision (created) reversed for loss on divestitures			—			141			—			(3,520	)
	Other income (expense)**			(6,365	)		184			(5,733	)		1,163

	Other income (expense), net		$	(14,932	)	$	(3,454	)	$	(15,755	)	$	(19,104	)


	*	Three months ended September 30, 2012 and 2013 include $5,534 and $0, respectively, and nine months ended September 30, 2012 and 2013 include $5,534 and $3,157, respectively, representing acceleration of the amortization of debt issuance costs relating to the prepayment and termination of the previous credit facility in August 2012 and amendment of the new credit facility in June 2013, respectively, as described in Note 14.
	**	Three months and nine months ended September 30, 2012 include $6,607, representing 2012 recapitalization expenses, as described in Note 1.

Income_Taxes

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2013
Income Taxes	'
	19. Income taxes

	The Company determines the tax provision for interim periods using an estimate of 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.

	The Company’s effective tax rate in the third quarter of 2013 and for the nine months ended September 30, 2013 is 23.8% and 24.4% respectively, down from 37.7% in the third quarter of 2012 and 29.9% for the nine months ended September 30, 2012. This decrease was primarily driven by the growth of operations in low tax and tax-exempt locations, primarily in India, and the impact of certain period items in the third quarter of 2012. In the third quarter of 2012, the Company incurred recapitalization expenses which were largely non-deductible as well as withholding taxes of $2,300.

	As of December 31, 2012, the Company had unrecognized tax benefits amounting to $21,024 including an amount of $20,871 that, if recognized, would impact the effective tax rate.

	The following table summarizes the activities related to the Company’s unrecognized tax benefits for uncertain tax positions from January 1, 2013 to September 30, 2013:




	Opening Balance at January 1, 2013	$	21,024
	Increase related to prior year tax positions, including recorded against goodwill		1,503
	Decrease related to prior year tax positions		(719	)
	Increase related to current year tax positions		1,217
	Effect of exchange rate changes		(2,036	)

	Closing Balance at September 30, 2013	$	20,989

	The unrecognized tax benefits as of September 30, 2013 include an amount of $20,831 that, if recognized, would impact the effective tax rate. As of December 31, 2012 and September 30, 2013, the Company has accrued approximately $3,423 and $3,841, respectively, in interest relating to unrecognized tax benefits.

Related_Party_Transactions

Related Party Transactions	9 Months Ended
Related Party Transactions	Sep. 30, 2013
Related Party Transactions	'
	20. Related party transactions
	Related party transactions during the year ended December 31, 2012 included transactions with a client who had a significant interest in the Company. During the year ended December 31, 2012, such interest decreased to less than 5% of the Company’s outstanding shares and therefore such client is no longer a related party. The Company has also entered into related party transactions with its non-consolidating affiliates and a client in which one of the Company’s directors has a controlling interest. During the nine months ended September 30, 2013, the Company acquired the remaining equity interest in one of its non-consolidating affiliates, which is now a wholly owned subsidiary as described in note 3A(b). The Company has also entered into related party transactions with an affiliate of a significant shareholder of the Company.
	The related party transactions can be categorized as follows:
	Revenue from services
	For the nine months ended September 30, 2012, the Company recognized net revenues of $143, and for the three months ended September 30, 2012, the Company recognized net revenues of $53, from a client in which one of the Company’s directors has a controlling interest.
	For the nine months ended September 30, 2012, the Company recognized net revenues of $344, and for the three months ended September 30, 2012, the Company recognized net revenues of $117, from a client who had a significant interest in the Company.
	For the nine months ended September 30, 2013, the Company recognized net revenues of $571, and for the three months ended September 30, 2013, the Company recognized net revenues of $190, from a client who is an affiliate of a significant shareholder of the Company.
	Cost of revenue from services
	The Company purchases certain services from its non-consolidating affiliates mainly relating to training and recruitment, which are included in cost of revenue. For the nine months ended September 30, 2012 and 2013, cost of revenue includes an amount of $1,754 and $1,527, respectively, and for the three months ended September 30, 2012 and 2013, cost of revenue, includes an amount of $670 and $563, respectively.
	Selling, general and administrative expenses
	The Company purchases certain services from its non-consolidating affiliates mainly relating to training and recruitment, which are included in selling, general and administrative expenses. For the nine months ended September 30, 2012 and 2013, selling, general and administrative expenses includes an amount of $408 and $356, respectively, and for the three months ended September 30, 2012 and 2013, selling, general and administrative expenses includes an amount of $198 and $135, respectively.
	Investment in equity affiliate
	During the nine months ended September 30, 2012, the Company made an investment of $205 in its non-consolidating affiliates, and for the three months ended September 30, 2012, the Company made an investment of $0 in its non-consolidating affiliates.

Dividend

Dividend	9 Months Ended
Dividend	Sep. 30, 2013
Dividend	'
	21. Dividend
	On August 30, 2012, the Company declared a special cash dividend of $2.24 per share, or approximately $501,620. The special cash dividend was paid on September 24, 2012 to shareholders of record as of the close of business on September 10, 2012. Further, in accordance with the terms of the Company’s stock-based compensation plans, in order to preserve the value of the stock-based awards outstanding as of the record date, the Company reduced the exercise price per share of each outstanding stock option award and increased the number of shares in relation to the outstanding stock-based awards as of the record date of the special cash dividend.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2013
Commitments and Contingencies	'
	22. Commitments and contingencies
	Capital commitments
	As of December 31, 2012 and September 30, 2013, the Company has committed to spend $3,965 and $4,772, respectively, under agreements to purchase property, plant and equipment. This amount is net of capital advances paid in respect of these purchases.
	Bank Guarantees
	The Company has outstanding bank guarantees amounting to $13,381 and $11,083 as of December 31, 2012 and September 30, 2013, respectively. Bank guarantees are generally provided to government agencies, 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.
	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.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2013
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, 2012.
	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 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 a 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 noncontrolling shareholders’ interest in the operation of Hello Communications (Shanghai) Co., Ltd. and the profits or losses associated with the noncontrolling interest in those operations. 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 and, 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.
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, the reserve for doubtful receivables, the valuation allowance for deferred tax assets, the valuation of derivative financial instruments, the measurements of stock-based compensation, assets and obligations related to employee benefits, 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 knowledge of current events and actions, actual results could differ from these estimates. Any changes in estimates are adjusted prospectively in the consolidated financial statements.
Business combinations	'
	(c) Business combinations, goodwill and other intangible assets
	The Company accounts for its business combinations by recognizing the identifiable tangible and intangible assets acquired and 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 at 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	'
	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 9 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
	Contract-related intangible assets		1 year
	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.
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 30% and 27% of receivables as of December 31, 2012 and September 30, 2013, respectively. GE accounted for 26% and 23% of revenues for the nine months ended September 30, 2012 and 2013, respectively, and for 26% and 22% of revenues for the three months ended September 30, 2012 and 2013, respectively.
Recently adopted accounting pronouncements	'
	(e) Recently adopted accounting pronouncements
	The authoritative bodies release standards and guidance which are assessed by management for impact on the Company’s consolidated financial statements.
	The following recently released accounting standard has been adopted by the Company and certain disclosures in the consolidated financial statements and notes to the consolidated financial statements have been modified accordingly. Adoption of this standard did not have a material impact on the consolidated results of operations, cash flows, financial position or disclosures:

		•	Effective January 1, 2013, the Company adopted FASB ASU 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (“ASU 2013-02”). ASU 2013-02 amended existing guidance by requiring additional disclosure either on the face of the income statement or in the notes to the financial statements of significant amounts reclassified out of accumulated other comprehensive income. ASU 2013-02 requires prospective adoption and affects financial statement disclosure only.
Reclassification	'
	(f) Reclassification
	Certain reclassifications have been made in the consolidated financial statements of prior periods to conform to the classification used in the current period. The impact of such reclassifications on the consolidated financial statements is not material.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	9 Months Ended
Summary of Significant Accounting Policies (Tables)	Sep. 30, 2013
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
	Contract-related intangible assets	1 year
	Other intangible assets	3-9 years

Business_Acquisitions_and_Dive1

Business Acquisitions and Divestitures (Tables)	9 Months Ended
Business Acquisitions and Divestitures (Tables)	Sep. 30, 2013
Re-Measured Fair Value of Earn-Out Consideration with Corresponding Changes in Consolidated Statements of Income	'
	As of September 30, 2013, the Company re-measured the fair value of such earn-out consideration with corresponding changes in the Consolidated Statements of Income as follows:


	Decrease in fair value of earn-out consideration for Empower	$	(145	)
	Decrease in fair value of earn-out consideration for Triumph Companies		(2,150	)
	Decrease in fair value of earn-out consideration for Atyati		(1,794	)
	Decrease in fair value of earn-out consideration for HPP		(363	)
		$	(4,452	)
Third Pillar System Inc	'
Purchase Price Allocation Based on Fair Value of Assets Acquired and Liabilities Assumed	'
	The following table summarizes the allocation of purchase price based on the fair value of assets acquired and liabilities assumed as of the acquisition date:


	Cash consideration	$	2,500
	Recognized amounts of identifiable assets acquired and liabilities assumed
	Current assets	$	375
	Intangible assets		298
	Other non-current assets		24
	Current liabilities		(200	)
	Total identifiable net assets acquired	$	497
	Goodwill		2,003
	Total	$	2,500
NGEN Media Services Private Limited	'
Purchase Price Allocation Based on Fair Value of Assets Acquired and Liabilities Assumed	'
	The following table summarizes the consideration paid to acquire NGEN and the fair value of assets acquired and liabilities assumed as of the acquisition date, as well as the fair value of the Company’s existing investment in NGEN as of the acquisition date:


	Cash consideration	$	158
	Acquisition date fair value of the Company’s investment in NGEN held before the business combination		158
	Total	$	316
	Recognized amounts of identifiable assets acquired and liabilities assumed
	Cash and cash equivalents	$	432
	Current assets		402
	Tangible fixed assets		27
	Other non-current assets		89
	Current liabilities		(337	)
	Other liabilities		(274	)
	Total identifiable net assets acquired	$	339
	Gain recognized on acquisition		(23	)
	Total	$	316
Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited	'
Purchase Price Allocation Based on Fair Value of Assets Acquired and Liabilities Assumed	'
	Pursuant to the terms of the acquisition agreements with the respective sellers, the purchase consideration for the Jawood business is comprised of the following:


	Base purchase price	$	53,295
	Closing date net working capital adjustment		(3,821	)
	Closing date indebtedness adjustment		(2,202	)
	Closing date cash adjustment		1,304
	Seller expenses		(1,379	)
	Total purchase price	$	47,197
Business Acquisition Purchase Price Determination	'
	The following table summarizes the allocation of the purchase price based on the fair value of assets acquired and liabilities assumed as of the date of acquisition including measurement period adjustments:


	Purchase price	$	47,197
	Acquisition related costs included in selling, general and administrative expenses		310
	Recognized amounts of identifiable assets acquired and liabilities assumed
	Cash and cash equivalents	$	1,364
	Current assets		6,477
	Tangible fixed assets		704
	Intangible assets		11,200
	Other non-current assets		548
	Current liabilities		(7,866	)
	Long term liabilities		(56	)
	Total identifiable net assets acquired	$	12,371
	Goodwill		34,826
	Total	$	47,197
Fair Value and Estimated Useful Lives of Intangibles	'
	The value and estimated useful lives of the intangible assets are as follows:


		Value			Estimated useful life
	Customer related intangible assets	$	10,200			1 – 7 years
	Marketing related intangible assets		1,000			1 – 5 years
Atyati Technologies Private Limited	'
Purchase Price Allocation Based on Fair Value of Assets Acquired and Liabilities Assumed	'
	The following table summarizes the allocation of the purchase price based on the fair value of assets acquired and liabilities assumed as of the date of acquisition including measurement period adjustments:


	Purchase price	$	23,394
	Acquisition related costs included in selling, general and administrative expenses		164
	Recognized amounts of identifiable assets acquired and liabilities assumed
	Cash and cash equivalents	$	2,000
	Current assets		5,265
	Tangible fixed assets		426
	Intangible assets		8,767
	Deferred tax asset/ (liability), net		(2,557	)
	Other non-current assets		369
	Current liabilities		(3,424	)
	Short term borrowings		(654	)
	Other liabilities		(737	)
	Total identifiable net assets acquired	$	9,455
	Goodwill		13,939
	Total	$	23,394
Business Acquisition Purchase Price Determination	'
	Pursuant to the terms of the acquisition agreement with the sellers, the purchase consideration is comprised of the following:


	Cash consideration	$	19,368
	Acquisition date discounted value of deferred consideration		2,539
	Acquisition date fair value of earn-out consideration		1,487
	Working capital adjustment		—
	Total purchase price	$	23,394
Fair Value and Estimated Useful Lives of Intangibles	'
	The value and estimated useful lives of the intangibles are as follows:


		Value			Estimated useful life
	Customer related intangibles	$	5,408			4 – 9 years
	Other intangibles		3,359			7 years
Triumph Engineering Corporation and Triumph On-Demand Inc	'
Purchase Price Allocation Based on Fair Value of Assets Acquired and Liabilities Assumed	'
	The following table summarizes the allocation of the purchase price based on the fair value of assets acquired and liabilities assumed as of the date of acquisition:


	Purchase price	$	5,446
	Acquisition related costs included in selling, general and administrative expenses		134
	Recognized amounts of identifiable assets acquired and liabilities assumed
	Cash and cash equivalents	$	312
	Current assets		1,708
	Tangible fixed assets		175
	Intangible assets		382
	Deferred tax asset/ (liability), net		(565	)
	Current liabilities		(720	)
	Short term borrowing		(350	)
	Total identifiable net assets acquired	$	942
	Goodwill		4,504
	Total	$	5,446
Business Acquisition Purchase Price Determination	'
	Pursuant to the terms of the acquisition agreement with the seller, the purchase consideration is comprised of the following:


	Cash consideration	$	3,600
	Acquisition date fair value of deferred consideration		379
	Acquisition date fair value of earn-out consideration		3,256
	Working capital adjustment		(848	)
	Closing indebtedness adjustment		(941	)
	Total purchase price	$	5,446
Fair Value and Estimated Useful Lives of Intangibles	'
	The value and estimated useful lives of the intangibles are as follows:


		Value			Estimated useful life
	Customer related intangibles	$	382			1 to 10 years
Accounting Plaza B.V. ("Accounting Plaza")	'
Purchase Price Allocation Based on Fair Value of Assets Acquired and Liabilities Assumed	'
	The following table summarizes the allocation of the purchase consideration based on the fair value of assets acquired and liabilities assumed as of the date of acquisition including measurement period adjustments:


	Purchase consideration	$	38,698
	Acquisition related costs included in selling, general and administrative expenses		434
	Recognized amounts of identifiable assets acquired and liabilities assumed
	Cash and cash equivalents	$	1,664
	Current assets		11,327
	Tangible fixed assets		2,010
	Intangible assets		13,138
	Deferred tax asset/ (liability), net		(2,711	)
	Other non-current assets		971
	Current liabilities		(9,062	)
	Other liabilities		(4,188	)
	Total identifiable net assets acquired	$	13,149
	Goodwill		25,549
	Total	$	38,698
Business Acquisition Purchase Price Determination	'
	Pursuant to the terms of the acquisition agreement with the sellers, the purchase consideration is comprised of the following:


	Base consideration	$	38,698
	Adjustment for transfer of pension funds		—
	Adjustment for underfunding in pension funds		—
	Adjustment for sellers warranty breaches and certain other transactions		—
	Adjustment for transaction costs		—
	Purchase consideration	$	38,698
Fair Value and Estimated Useful Lives of Intangibles	'
	The value and estimated useful life of the intangible asset are as follows:


		Value			Estimated useful life
	Customer related intangible	$	13,138			3 – 10 years

Cash_and_Cash_Equivalents_Tabl

Cash and Cash Equivalents (Tables)	9 Months Ended
Cash and Cash Equivalents (Tables)	Sep. 30, 2013
Cash And Cash Equivalents	'
	Cash and cash equivalents as of December 31, 2012 and September 30, 2013 comprise:


		As of December 31, 2012		As of September 30, 2013
	Deposits with banks	$	283,660	$	245,909
	Other cash and bank balances		175,568		235,589

	Total	$	459,228	$	481,498

Accounts_Receivable_Net_of_Res1

Accounts Receivable, Net of Reserve for Doubtful Receivables (Tables)	9 Months Ended
	Sep. 30, 2013
Reserve for Doubtful Receivables	'
	The following table provides details of the reserve for doubtful receivables recorded by the Company:


		As of December 31,			As of September 30,
		2012			2013
	Opening balance as of January 1	$	8,704		$	9,073
	Additions due to acquisitions		184			—
	Additions charged to cost and expense		3,878			8,919
	Deductions		(3,693	)		(3,473	)

	Closing balance	$	9,073		$	14,519

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
Fair Value Measurements (Tables)	Sep. 30, 2013
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, 2012 and September 30, 2013:


			As of December 31, 2012
			Fair Value Measurements at Reporting Date Using
					Quoted Prices in Active			Significant Other		Significant Other
					Markets for Identical			Observable		Unobservable
					Assets			Inputs		Inputs
			Total		(Level 1)			(Level 2)		(Level 3)
	Assets
	Derivative Instruments (Note a)		$	10,645	$	—		$	10,645	$	—

	Total		$	10,645	$	—		$	10,645	$	—

	Liabilities
	Derivative Instruments (Note b)		$	174,076	$	—		$	174,076	$	—

	Total		$	174,076	$	—		$	174,076	$	—



			As of September 30, 2013
			Fair Value Measurements at Reporting Date Using
					Quoted Prices in Active			Significant Other		Significant Other
					Markets for Identical			Observable		Unobservable
					Assets			Inputs		Inputs
			Total		(Level 1)			(Level 2)		(Level 3)
	Assets
	Derivative Instruments (Note a)		$	6,768	$	—		$	6,768	$	—

	Total		$	6,768	$	—		$	6,768	$	—

	Liabilities
	Derivative Instruments (Note b)		$	277,459	$	—		$	277,459	$	—

	Total		$	277,459	$	—		$	277,459	$	—


	(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.
Reconciliation of Loans Held for Sale Measured at Fair Value Using Significant Unobservable Inputs	'
	The following table sets forth the reconciliation of loans held for sale that were outstanding as of September 30, 2012 but settled during the year ended December 31, 2012, which were measured at fair value using significant unobservable inputs:


			Three months ended		Nine months ended
			September 30, 2012		September 30, 2012
	Opening balance, net		$	360	$	469
	Impact of fair value included in earnings			—		(108	)
	Settlements			—		(1	)

	Closing balance, net		$	360	$	360

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	9 Months Ended
Derivative Financial Instruments (Tables)	Sep. 30, 2013
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
			(Note a)								(liability) (Note b)
			As of				As of				As of				As of
			December 31,				September 30,				December 31,				September 30,
			2012				2013				2012				2013
	Foreign exchange forward contracts denominated in:
	United States Dollars (sell) Indian Rupees (buy)		$	1,706,000			$	1,472,000			$	(160,432	)		$	(269,392	)
	United States Dollars (sell) Mexican Peso (buy)			8,400				12,300				306				(422	)
	United States Dollars (sell) Philippines Peso (buy)			58,800				56,850				2,237				(1,723	)
	Euro (sell) United States Dollars (buy)			79,501				45,134				(420	)			(1,836	)
	Euro (sell) Hungarian Forints (buy)			9,968				5,598				(10	)			51
	Euro (sell) Romanian Leu (buy)			64,870				63,689				(645	)			1,433
	Japanese Yen (sell) Chinese Renminbi (buy)			26,214				29,573				1,451				2,046
	Pound Sterling (sell) United States Dollars (buy)			92,165				74,149				(2,494	)			(2,791	)
	Australian Dollars (sell) United States Dollars (buy)			60,626				59,450				(3,424	)			1,943

											$	(163,431	)		$	(270,691	)


	(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 instruments 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				As of				As of				As of
			December 31,				September 30,				December 31,				September 30,
			2012				2013				2012				2013
	Assets
	Prepaid expenses and other current assets		$	6,972			$	4,790			$	1,742			$	318
	Other assets		$	1,931			$	1,660			$	—			$	—
	Liabilities
	Accrued expenses and other current liabilities		$	60,229			$	99,486			$	1,417			$	11,402
	Other liabilities		$	112,430			$	166,571			$	—			$	—
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 affect are summarized below:


			Three months ended September 30, 2012												Three months ended September 30, 2013												Nine months ended September 30, 2012									Nine months ended September 30, 2013
			Before-				Tax				Net of				Before-				Tax				Net of				Before-			Tax			Net of			Before-			Tax		Net of tax
			Tax				(Expense)				tax				Tax				(Expense)				tax				Tax			(Expense)			tax			Tax			(Expense)		Amount
			amount				or Benefit				Amount				amount				or				Amount				amount			or			Amount			amount			or
																			Benefit											Benefit									Benefit
	Opening balance		$	(255,562	)		$	90,440			$	(165,122	)		$	(207,373	)		$	73,239			$	(134,134	)		$	(203,006	)	$	71,125		$	(131,881	)	$	(163,756	)	$	59,070	$	(104,686	)
	Net gains (losses) reclassified into statement of income on completion of hedged transactions			(15,813	)			5,390				(10,423	)			(23,185	)			8,759				(14,426	)			(22,654	)		7,643			(15,011	)		(44,070	)		17,061		(27,009	)
	Changes in fair value of effective portion of outstanding derivatives, net			99,280				(35,676	)			63,604				(75,420	)			27,031				(48,389	)			39,883			(14,108	)		25,775			(139,922	)		49,502		(90,420	)

	Gain (loss) on cash flow hedging derivatives, net			115,093				(41,066	)			74,027				(52,235	)			18,272				(33,963	)			62,537			(21,751	)		40,786			(95,852	)		32,441		(63,411	)

	Closing balance as of September 30		$	(140,469	)		$	49,374			$	(91,095	)		$	(259,608	)		$	91,511			$	(168,097	)		$	(140,469	)	$	49,374		$	(91,095	)	$	(259,608	)	$	91,511	$	(168,097	)

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


	Derivatives		Amount of Gain								Location of		Amount of Gain (Loss) reclassified from OCI into																Location of	Amount of Gain (Loss) recognized in income on
	in Cash		(Loss) recognized in								Gain (Loss)		Statement of Income (Effective Portion)																Gain (Loss)	Derivative (Ineffective Portion and
	Flow		OCI on Derivatives								reclassified																		recognized in	Amount excluded from Effectiveness Testing)
	Hedging		(Effective Portion)								from OCI into																		Income on
	Relationships										Statement of																		Derivatives
											Income																		(Ineffective
											(Effective																		Portion and
											Portion)																		Amount
																													excluded
																													from
																													Effectiveness
																													Testing)
			Nine months										Three months								Nine months									Three months						Nine months
			ended September 30,										ended September 30,								ended September 30,									ended September 30,						ended September 30,
			2012				2013						2012				2013				2012				2013					2012			2013			2012			2013
	Forward foreign exchange contracts		$	39,883			$	(139,922	)		Revenue		$	(1,144	)		$	2,590			$	(3,587	)		$	5,957			Foreign exchange (gains) losses, net	$	—		$	—			—			—
											Cost of revenue			(11,614	)			(20,801	)			(15,025	)			(40,417	)
											Selling, general and administrative expenses			(3,055	)			(4,974	)			(4,042	)			(9,610	)

			$	39,883			$	(139,922	)				$	(15,813	)		$	(23,185	)		$	(22,654	)		$	(44,070	)			$	—		$	—		$	—		$	—



	Non designated Hedges


	Derivatives not designated		Location of (Gain) Loss		Amount of (Gain) Loss recognized in Statement of
	as hedging instruments		recognized in Statement of Income on		Income on Derivatives
			Derivatives		Three months ended								Nine months ended
					September 30,								September 30,
					2012				2013				2012				2013
	Forward foreign exchange contracts (Note a)		Foreign exchange (gains) losses, net		$	(10,588	)		$	11,359			$	(9,002	)		$	20,944

					$	(10,588	)		$	11,359			$	(9,002	)		$	20,944


	(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 inter-company 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.

Property_Plant_and_Equipment_N1

Property, Plant and Equipment, Net (Tables)	9 Months Ended
Property, Plant and Equipment, Net (Tables)	Sep. 30, 2013
Property, Plant and Equipment, Net	'
	Property, plant and equipment, net consist of the following:


		As of December 31,			As of September 30,
		2012			2013
	Property, plant and equipment, gross	$	513,540		$	486,112
	Less: Accumulated depreciation and amortization		(313,178	)		(317,738	)

	Property, plant and equipment, net	$	200,362		$	168,374

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	9 Months Ended
Goodwill and Intangible Assets (Tables)	Sep. 30, 2013
Changes in Goodwill	'
	The following table presents the changes in goodwill for the year ended December 31, 2012 and nine months ended September 30, 2013:


		As of December 31,			As of September 30,
		2012			2013
	Opening balance	$	925,339		$	956,064
	Goodwill relating to acquisitions consummated during the period		43,265			37,918
	Adjustment to preliminary purchase accounting for acquisitions		(3,213	)		(362	)
	Effect of exchange rate fluctuations		(9,327	)		(43,196	)

	Closing balance	$	956,064		$	950,424

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, 2012								As of September 30, 2013
		Gross			Accumulated			Net		Gross		Accumulated		Net
		carrying			amortization					carrying		amortization
		amount								amount
	Customer-related intangible assets	$	291,735		$	206,987		$	84,748	$	286,716	$	207,466	$	79,250
	Marketing-related intangible assets		40,386			18,801			21,585		40,654		20,026		20,628
	Contract-related intangible assets		1,182			1,182			—		1,028		1,028		—
	Other intangible assets		7,069			1,015			6,054		9,075		2,021		7,054

		$	340,372		$	227,985		$	112,387	$	337,473	$	230,541	$	106,932

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	9 Months Ended
Employee Benefit Plans (Tables)	Sep. 30, 2013
Net Defined Benefit Plan Costs	'
	Net defined benefit plan costs for the three months and nine months ended September 30, 2012 and 2013 include the following components:




		Three months ended September 30,						Nine months ended September 30,
		2012			2013			2012			2013
	Service costs	$	693		$	1,528		$	2,667		$	3,274
	Interest costs		331			869			1,246			1,756
	Amortization of actuarial loss		193			200			532			650
	Expected return on plan assets		(187	)		(298	)		(599	)		(727	)

	Net Gratuity Plan costs	$	1,030		$	2,299		$	3,846		$	4,953

Amount Contributed to Defined Contribution Plans in Various Jurisdictions	'
	During the three months and nine months ended September 30, 2012 and 2013, the Company contributed the following amounts to defined contribution plans in various jurisdictions:


		Three months ended						Nine months ended
		September 30,						September 30,
		2012			2013			2012			2013
	India	$	3,450		$	3,446		$	10,367		$	10,935
	U.S.		696			620			2,462			2,561
	U.K.		345			405			1,096			1,352
	Hungary		6			6			52			18
	China		3,092			3,899			8,670			10,781
	Mexico		4			3			25			23
	Morocco		33			20			122			71
	South Africa		82			46			246			172
	Hong Kong		10			4			27			15
	Philippines		5			3			11			11
	Singapore		—			2			—			8
	Netherlands		411			345			840			1,427
	Japan		107			611			320			1,577

	Total	$	8,241		$	9,410		$	24,238		$	28,951

Stockbased_Compensation_Tables

Stock-based Compensation (Tables)	9 Months Ended
Stock-based Compensation (Tables)	Sep. 30, 2013
Share-based Payment Award, Stock Options, Valuation Assumptions	'
	The following table shows the significant assumptions used in connection with the determination of the fair value of options granted in the nine months ended September 30, 2013. No options were granted in the nine months ended September 30, 2012.


			Nine months ended
			September 30, 2013
	Dividend Yield			0	%
	Expected life (in months)			84
	Risk free rate of interest			1.55	%
	Volatility			39.39	%
Summary of Options Activity	'
	A summary of options activity during the nine months ended September 30, 2013 is set out below:


			Nine months ended September 30, 2013
			Shares arising			Weighted average			Weighted average			Aggregate
			out of options			exercise price			remaining			intrinsic
									contractual life			value
									(years)
	Outstanding as of January 1, 2013			12,413,298		$	9.29			4.2
	Granted			3,483,000			19.35
	Forfeited			(63,056	)		10.47
	Expired			(67,978	)		13.79
	Exercised			(3,784,851	)		8.76						38,149

	Outstanding as of September 30, 2013			11,980,413		$	12.35			5.32		$	80,652

	Vested as of September 30, 2013 and expected to vest thereafter (a)			11,596,240		$	12.07			5.32		$	80,471
	Vested and Exercisable as of September 30, 2013			7,547,192		$	9.27			3.24		$	72,524
	Weighted average grant date fair value of grants during the period		$	19.35


	(a)	Options expected to vest reflect an estimated forfeiture rate.
Summary of Restricted Share Units Granted	'
	A summary of RSUs granted during the nine months ended September 30, 2013 is set out below:


			Nine months ended September 30, 2013
			Number of Restricted Share			Weighted Average Grant Date
			Units			Fair Value
	Outstanding as of January 1, 2013			1,688,402		$	13.74
	Granted			91,623			19.52
	Vested*			(294,451	)		14.49
	Forfeited			(190,665	)		13.62

	Outstanding as of September 30, 2013			1,294,909		$	14

	Expected to vest (a)			1,165,351

	(a)	RSUs expected to vest reflect an estimated forfeiture rate.
	*	Vested RSUs have been net settled upon vesting by issuing 188,966 shares (net of minimum statutory withholding taxes).
Summary of Performance Units Activity	'
	A summary of PUs activity during the nine months ended September 30, 2013 is set out below:


			Nine months ended September 30, 2013
			Number of			Weighted			Maximum Shares Eligible to
			Performance Units			Average Grant			Receive
						Date Fair
						Value
	Outstanding as of January 1, 2013			3,041,511		$	13.26			4,402,597
	Granted			2,025,090			18.57			3,694,635
	Vested			—			—			—
	Forfeited			(200,654	)		15.13			(256,064	)
	Addition due to achievement of higher than target performance goals*			297,911			17.5
	Reduction due to achievement of lower than maximum performance goals**									(373,702	)

	Outstanding as of September 30, 2013			5,163,858		$	15.51			7,467,466

	Expected to vest (a)			2,542,867

	(a)	PUs expected to vest are based on the probable achievement of the performance targets after considering an estimated forfeiture rate
	*	Represents the additional award of 22.2% of the target shares on account of the achievement of higher than target performance for the PUs granted in March 2012.
	**	Represents a 27.8% reduction in the maximum shares eligible to vest on account of the certification of the performance goals for the PUs granted in 2012.
Modification of Performance Metrics for Performance Grants Made to Employees	'

			Original Performance Target						Modified Performance Target
	Performance Level		Revenue			EBITDA			Revenue			Adjusted Income from
	Performance Level		Growth			Growth			Growth			Operation growth
	Outstanding			20	%		20	%		20	%		20	%
	Target			15	%		15	%		15	%		15	%
	Threshold			10	%		10	%		10	%		10	%
Modification of Performance Metrics for Performance Grants Made to Former Chief Executive Officer	'

			Original Performance Target						Modified Performance Target
	Performance Level		Revenue			EBITDA			Revenue			Adjusted Income from
	Performance Level		Growth			Growth			Growth			Operation growth
	Outstanding			20	%		20	%		17	%		16	%
	Target			15	%		15	%		12.5	%		12.5	%
	Threshold			10	%		10	%		8	%		7	%

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
Earnings Per Share (Tables)	Sep. 30, 2013
Earnings Per Share	'

		Three months ended September 30,				Nine months ended September 30,
		2012		2013		2012		2013
	Net income available to Genpact Limited common shareholders	$	25,175	$	70,262	$	124,815	$	180,875
	Weighted average number of common shares used in computing basic earnings per common share		223,876,035		230,057,508		223,289,507		228,840,746
	Dilutive effect of stock-based awards		6,319,799		6,279,416		5,226,884		6,254,914

	Weighted average number of common shares used in computing dilutive earnings per common share		230,195,834		236,336,924		228,516,391		235,095,660

	Earnings per common share attributable to Genpact Limited common shareholders
	Basic	$	0.11	$	0.31	$	0.56	$	0.79
	Diluted	$	0.11	$	0.3	$	0.55	$	0.77

Longterm_Debt_Tables

Long-term Debt (Tables)	9 Months Ended
Long-term Debt (Tables)	Sep. 30, 2013
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
	2013	$	1,056
	2014	$	4,263
	2015	$	4,288
	2016	$	4,306
	2017	$	4,338
	2018	$	4,363
	2019	$	636,306

		$	658,920

Cost_of_Revenue_Tables

Cost of Revenue (Tables)	9 Months Ended
Cost of Revenue (Tables)	Sep. 30, 2013
Cost of Revenue	'
	Cost of revenue consists of the following:


		Three months ended September 30,				Nine months ended September 30,
		2012		2013		2012		2013
	Personnel expenses	$	203,011	$	223,976	$	583,649	$	671,518
	Operational expenses		82,227		93,235		228,256		265,894
	Depreciation and amortization		12,015		12,078		36,035		36,317

		$	297,253	$	329,289	$	847,940	$	973,729

Selling_General_and_Administra1

Selling, General and Administrative Expenses (Tables)	9 Months Ended
Selling, General and Administrative Expenses (Tables)	Sep. 30, 2013
Selling, General and Administrative Expenses	'
	Selling, general and administrative expenses consist of the following:


		Three months ended September 30,				Nine months ended September 30,
		2012		2013		2012		2013
	Personnel expenses	$	80,421	$	83,580	$	230,917	$	251,379
	Operational expenses		35,916		31,318		100,318		90,865
	Depreciation and amortization		2,199		2,107		6,559		6,388

		$	118,536	$	117,005	$	337,794	$	348,632

Other_Operating_Income_Expense1

Other Operating (Income) Expense, Net (Tables)	9 Months Ended
Other Operating (Income) Expense, Net (Tables)	Sep. 30, 2013
Other Operating (Income) Expense, Net	'

		Three months ended September 30,						Nine months ended September 30,
		2012			2013			2012			2013
	Other operating (income) expense	$	(789	)	$	(1,051	)	$	(2,302	)	$	(2,260	)
	Provision for impairment of capital work in progress / property, plant and equipment		2,121			—			2,121			2,392
	Change in fair value of earn out consideration and deferred consideration (relating to business acquisitions)		(1,930	)		(2,181	)		(1,930	)		(4,452	)

	Other operating (income) expense, net	$	(598	)	$	(3,232	)	$	(2,111	)	$	(4,320	)

Other_Income_Expense_Net_Table

Other Income (Expense), Net (Tables)	9 Months Ended
Other Income (Expense), Net (Tables)	Sep. 30, 2013
Other Income (Expense), Net	'
	Other income (expense), net consists of the following:


			Three months ended September 30,						Nine months ended September 30,
			2012			2013			2012			2013
	Interest income		$	2,455		$	4,355		$	7,965		$	14,114
	Interest expense*			(11,022	)		(8,134	)		(17,987	)		(30,861	)
	Provision (created) reversed for loss on divestitures			—			141			—			(3,520	)
	Other income (expense)**			(6,365	)		184			(5,733	)		1,163

	Other income (expense), net		$	(14,932	)	$	(3,454	)	$	(15,755	)	$	(19,104	)


	*	Three months ended September 30, 2012 and 2013 include $5,534 and $0, respectively, and nine months ended September 30, 2012 and 2013 include $5,534 and $3,157, respectively, representing acceleration of the amortization of debt issuance costs relating to the prepayment and termination of the previous credit facility in August 2012 and amendment of the new credit facility in June 2013, respectively, as described in Note 14.
	**	Three months and nine months ended September 30, 2012 include $6,607, representing 2012 recapitalization expenses, as described in Note 1.

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended
Income Taxes (Tables)	Sep. 30, 2013
Activities Related to Unrecognized Tax Benefits for Uncertain Tax Positions	'
	The following table summarizes the activities related to the Company’s unrecognized tax benefits for uncertain tax positions from January 1, 2013 to September 30, 2013:




	Opening Balance at January 1, 2013	$	21,024
	Increase related to prior year tax positions, including recorded against goodwill		1,503
	Decrease related to prior year tax positions		(719	)
	Increase related to current year tax positions		1,217
	Effect of exchange rate changes		(2,036	)

	Closing Balance at September 30, 2013	$	20,989

Organization_Additional_Inform

Organization - Additional Information (Detail) (USD $)

1 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

In Thousands, except Share data, unless otherwise specified

Aug. 30, 2012

Aug. 01, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

31-May-11

Sep. 30, 2013

Dec. 31, 2012

Aug. 31, 2007

Mar. 24, 2010

Dec. 31, 2012

Dec. 14, 2012

Oct. 25, 2012

Employee

Fortune Global 500

Selling, General and Administrative Expenses

Other income (expense)

Existing Shareholders

General Electric Company

General Atlantic

Oak Hill Capital Partners

Bain Purchaser

Bain Co-Investor

GIC Purchaser

Country

Minimum

Maximum

Customer

Organization [Line Items]

Number of years of service

'15 years

Number of professionals around the globe, minimum

60,000

Number of countries in which entity operates

Number of clients

100

Number of shares sold

17,647,059

Percent of ownership held

9.10%

5.00%

2.40%

Common stock shares to be purchased by affiliates of Bain Capital Partners

67,750,678

Sale of common shares, per share amount

$14.76

Sale Value of common stock shares to be purchased by affiliates of Bain Capital Partners

$1,000,000

Declaration of special cash dividend, declared date

30-Aug-12

Declaration of special cash dividend, payment date

24-Sep-12

Declaration of special cash dividend, record date

10-Sep-12

Number of common shares sold by selling shareholder

57,537,264

50,812

10,162,602

Termination of credit facility

380,000

New credit facility agreement

925,000

380,000

Dividend per share

$2.24

Dividend paid

501,620

Total expenses incurred for 2012 recapitalization

23,464

6,237

17,227

Reimbursement of expenses relating to 2012 recapitalization

$17,000

Estimated_Useful_Lives_of_Inta

Estimated Useful Lives of Intangible Assets Acquired (Detail)	9 Months Ended
	Sep. 30, 2013
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
Contract-Related Intangible Assets	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Intangible assets estimated useful lives	'1 year
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

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail) (General Electric Company)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
General Electric Company	'	'	'	'	'
Schedule Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Percentage of accounts receivables	27.00%	'	27.00%	'	30.00%
Percentage of revenues	22.00%	26.00%	23.00%	26.00%	'

Business_Acquisitions_and_Dive2

Business Acquisitions and Divestures - Additional Information (Detail) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

6 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

6 Months Ended

1 Months Ended

6 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Feb. 22, 2013

Sep. 13, 2013

Jun. 30, 2013

Feb. 06, 2013

Sep. 30, 2013

Sep. 04, 2012

Jun. 30, 2013

Aug. 17, 2012

Jun. 30, 2013

Apr. 25, 2012

Mar. 31, 2013

Mar. 28, 2013

Sep. 30, 2013

Mar. 14, 2011

Sep. 30, 2013

Aug. 24, 2011

Sep. 30, 2013

Oct. 03, 2011

Sep. 30, 2013

Aug. 30, 2013

Hello Communications (Shanghai) Co., Ltd.

Clearbizz B.V.

Gantthead.com, Inc

Jawood Business Process Solutions, LLC

Felix Software Solutions Private Limited

Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited

Atyati Technologies Private Limited

Triumph Engineering Corporation and Triumph On-Demand Inc

Accounting Plaza B.V. ("Accounting Plaza")

NGEN Media Services Private Limited

Akritiv Technologies, Inc.

High Performance Partners LLC

Empower Research, LLC

Third Pillar System Inc

Deferred Tax Asset

Other Noncurrent Assets

Business Acquisition [Line Items]

Enterprise value

$51,000

$2,295

$19,368

$3,600

$38,698

$158

$2,500

Held back amount

225

Intangible assets estimated weighted average useful life

'6 years

'7 years

'8 years

'7 years

'8 years

Percent ownership interest acquired

100.00%

Business acquisition, date

6-Feb-13

4-Sep-12

17-Aug-12

25-Apr-12

28-Mar-13

14-Mar-11

24-Aug-11

3-Oct-11

Percent ownership held, before acquisition

50.00%

Business acquisition, loss on re-measurement from equity interest to fair value

Cash and cash equivalents

1,364

2,000

312

1,664

432

Increase (decrease) in goodwill

-362

-3,213

-1,089

633

-13

107

Seller expenses

1,379

Payment for business acquisitions, net of cash acquired

49,235

53,931

47,212

Goodwill deductible for tax purposes

39,260

6,779

32,656

Acquisition date discounted value of deferred consideration

2,539

379

Contingent earn-out component-Low end

Contingent earn-out component-High end

14,372

4,500

Acquisition date fair value of earn-out consideration

1,487

3,256

Increase (decrease) in asset due to measurement period adjustment

-827

194

Goodwill

950,424

956,064

925,339

34,826

13,939

4,504

25,549

2,003

Fair value of trade receivables acquired in business combination

9,744

Gross amount of trade receivables acquired in business combination

9,917

Trade receivables uncollectible amount

173

Business Acquisition contingent consideration payment

3,868

587

3,274

1,499

Payment of deferred consideration

811

Cash consideration

998

Loss on sale

447

1,184

Balance of cash & cash equivalents

2,047

Proceeds from divestiture of business, net of cash divested (refer note 3C(a))

-1,049

Provision for loss on divestiture

($141)

$3,520

$2,336

Purchase_Price_Allocation_Base

Purchase Price Allocation Based on Fair Value of Assets Acquired and Liabilities Assumed, Third Pillar Systems Inc. (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Aug. 30, 2013
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Third Pillar System Inc
Business Acquisition [Line Items]	'	'	'	'
Cash consideration	'	'	'	$2,500
Recognized amounts of identifiable assets acquired and liabilities assumed	'	'	'	'
Current assets	'	'	'	375
Intangible assets	'	'	'	298
Other non-current assets	'	'	'	24
Current liabilities	'	'	'	-200
Total identifiable net assets acquired	'	'	'	497
Goodwill	950,424	956,064	925,339	2,003
Total	'	'	'	$2,500

Purchase_Price_Allocation_Base1

Purchase Price Allocation Based on Fair Value Of Assets Acquired and Liabilities Assumed, NGEN Media Services Private Limited (Detail) (NGEN Media Services Private Limited, USD $)	Mar. 28, 2013
In Thousands, unless otherwise specified	Mar. 28, 2013
NGEN Media Services Private Limited	'
Business Acquisition [Line Items]	'
Cash consideration	$158
Acquisition date fair value of the Company's investment in NGEN held before the business combination	158
Total	316
Recognized amounts of identifiable assets acquired & liabilities assumed	'
Cash and cash equivalents	432
Current assets	402
Tangible fixed assets	27
Other non-current assets	89
Current liabilities	-337
Other liabilities	-274
Total identifiable net assets acquired	339
Gain recognized on acquisition	-23
Total	$316

Purchase_Consideration_Jawood_

Purchase Consideration, Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited (Detail) (Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited, USD $)	Sep. 30, 2013	Feb. 06, 2013
In Thousands, unless otherwise specified	Sep. 30, 2013	Feb. 06, 2013
Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited	'	'
Business Acquisition [Line Items]	'	'
Base purchase price	'	$53,295
Closing date net working capital adjustment	'	-3,821
Closing date indebtedness adjustment	'	-2,202
Closing date cash adjustment	'	1,304
Seller expenses	-1,379	-1,379
Total purchase price	'	$47,197

Purchase_Price_Allocated_Based

Purchase Price Allocated Based on Fair Value of Assets Acquired and Liabilities Assumed, Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2013	Feb. 06, 2013
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited	Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited
Business Acquisition [Line Items]	'	'	'	'	'
Purchase price	'	'	'	'	$47,197
Acquisition related costs included in selling, general and administrative expenses	'	'	'	'	310
Recognized amounts of identifiable assets acquired and liabilities assumed	'	'	'	'	'
Cash and cash equivalents	'	'	'	1,364	1,364
Current assets	'	'	'	'	6,477
Tangible fixed assets	'	'	'	'	704
Intangible assets	'	'	'	'	11,200
Other non-current assets	'	'	'	'	548
Current liabilities	'	'	'	'	-7,866
Long term liabilities	'	'	'	'	-56
Total identifiable net assets acquired	'	'	'	'	12,371
Goodwill	950,424	956,064	925,339	'	34,826
Total	'	'	'	'	$47,197

Fair_Value_and_Estimated_Usefu

Fair Value and Estimated Useful Lives of Intangibles, Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited (Detail) (USD $)	9 Months Ended				1 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Feb. 06, 2013	Feb. 06, 2013	Feb. 06, 2013	Feb. 06, 2013	Feb. 06, 2013	Feb. 06, 2013
	Customer-Related Intangible Assets	Customer-Related Intangible Assets	Marketing-Related Intangible Assets	Marketing-Related Intangible Assets	Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited	Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited	Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited	Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited	Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited	Jawood Business Process Solutions, LLC and Felix Software Solutions Private Limited
	Minimum	Maximum	Minimum	Maximum	Customer-Related Intangible Assets	Customer-Related Intangible Assets	Customer-Related Intangible Assets	Marketing-Related Intangible Assets	Marketing-Related Intangible Assets	Marketing-Related Intangible Assets
						Minimum	Maximum		Minimum	Maximum
Acquired Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'	'	'	'	'	'
Intangible assets value	'	'	'	'	$10,200	'	'	$1,000	'	'
Intangible assets estimated useful lives	'1 year	'14 years	'1 year	'10 years	'	'1 year	'7 years	'	'1 year	'5 years

Purchase_Consideration_Atyati_

Purchase Consideration, Atyati Technologies Private Limited (Detail) (Atyati Technologies Private Limited, USD $)	Sep. 04, 2012
In Thousands, unless otherwise specified	Sep. 04, 2012
Atyati Technologies Private Limited	'
Business Acquisition [Line Items]	'
Cash consideration	$19,368
Acquisition date discounted value of deferred consideration	2,539
Acquisition date fair value of earn-out consideration	1,487
Working capital adjustment	'
Total	$23,394

Purchase_Price_Allocation_Base2

Purchase Price Allocation Based on Fair Value of Assets Acquired and Liabilities Assumed, Atyati Technologies Private Limited (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 04, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Atyati Technologies Private Limited
Business Acquisition [Line Items]	'	'	'	'
Purchase price	'	'	'	$23,394
Acquisition related costs included in selling, general and administrative expenses	'	'	'	164
Recognized amounts of identifiable assets acquired and liabilities assumed	'	'	'	'
Cash and cash equivalents	'	'	'	2,000
Current assets	'	'	'	5,265
Tangible fixed assets	'	'	'	426
Intangible assets	'	'	'	8,767
Deferred tax asset/ (liability), net	'	'	'	-2,557
Other non-current assets	'	'	'	369
Current liabilities	'	'	'	-3,424
Short term borrowings	'	'	'	-654
Other liabilities	'	'	'	-737
Total identifiable net assets acquired	'	'	'	9,455
Goodwill	950,424	956,064	925,339	13,939
Total	'	'	'	$23,394

Fair_Value_and_Estimated_Usefu1

Fair Value and Estimated Useful Lives of Intangibles, Atyati Technologies Private Limited (Detail) (USD $)	9 Months Ended				1 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 04, 2012	Sep. 04, 2012	Sep. 04, 2012	Sep. 04, 2012
	Customer-Related Intangible Assets	Customer-Related Intangible Assets	Other Intangible Assets	Other Intangible Assets	Atyati Technologies Private Limited	Atyati Technologies Private Limited	Atyati Technologies Private Limited	Atyati Technologies Private Limited
	Minimum	Maximum	Minimum	Maximum	Customer-Related Intangible Assets	Customer-Related Intangible Assets	Customer-Related Intangible Assets	Other Intangible Assets
						Minimum	Maximum
Acquired Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'	'	'	'
Intangible assets value	'	'	'	'	$5,408	'	'	$3,359
Intangible assets estimated useful lives	'1 year	'14 years	'3 years	'9 years	'	'4 years	'9 years	'7 years

Purchase_Consideration_Triumph

Purchase Consideration, Triumph (Detail) (Triumph Engineering Corporation and Triumph On-Demand Inc, USD $)	Aug. 17, 2012
In Thousands, unless otherwise specified	Aug. 17, 2012
Triumph Engineering Corporation and Triumph On-Demand Inc	'
Business Acquisition [Line Items]	'
Cash consideration	$3,600
Acquisition date fair value of deferred consideration	379
Acquisition date fair value of earn-out consideration	3,256
Working capital adjustment	-848
Closing indebtedness adjustment	-941
Total	$5,446

Purchase_Price_Allocation_Base3

Purchase Price Allocation Based on Fair Value of Assets Acquired and Liabilities Assumed, Triumph (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Aug. 17, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Triumph Engineering Corporation and Triumph On-Demand Inc
Business Acquisition [Line Items]	'	'	'	'
Purchase price	'	'	'	$5,446
Acquisition related costs included in selling, general and administrative expenses	'	'	'	134
Recognized amounts of identifiable assets acquirred and liabilities assumed	'	'	'	'
Cash and cash equivalents	'	'	'	312
Current assets	'	'	'	1,708
Tangible fixed assets	'	'	'	175
Intangible assets	'	'	'	382
Deferred tax asset/ (liability), net	'	'	'	-565
Current liabilities	'	'	'	-720
Short term borrowing	'	'	'	-350
Total identifiable net assets acquired	'	'	'	942
Goodwill	950,424	956,064	925,339	4,504
Total	'	'	'	$5,446

Fair_Value_and_Estimated_Usefu2

Fair Value and Estimated Useful Lives of Intangibles, Triumph (Detail) (Customer-Related Intangible Assets, USD $)	9 Months Ended		1 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013	Aug. 17, 2012	Aug. 17, 2012	Aug. 17, 2012
	Minimum	Maximum	Triumph Engineering Corporation and Triumph On-Demand Inc	Triumph Engineering Corporation and Triumph On-Demand Inc	Triumph Engineering Corporation and Triumph On-Demand Inc
				Minimum	Maximum
Acquired Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Intangible assets value	'	'	$382	'	'
Intangible assets estimated useful lives	'1 year	'14 years	'	'1 year	'10 years

Purchase_Consideration_Account

Purchase Consideration, Accounting Plaza (Detail) (Accounting Plaza B.V. ("Accounting Plaza"), USD $)	Apr. 25, 2012
In Thousands, unless otherwise specified	Apr. 25, 2012
Accounting Plaza B.V. ("Accounting Plaza")	'
Business Acquisition [Line Items]	'
Base consideration	$38,698
Adjustment for transfer of pension funds	'
Adjustment for underfunding in pension funds	'
Adjustment for sellers warranty breaches and certain other transactions	'
Adjustment for transaction costs	'
Total	$38,698

Purchase_Price_Allocation_Base4

Purchase Price Allocation Based on Fair Value of Assets Acquired and Liabilities Assumed, Accounting Plaza (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Apr. 25, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Accounting Plaza B.V. ("Accounting Plaza")
Business Acquisition [Line Items]	'	'	'	'
Purchase consideration	'	'	'	$38,698
Acquisition related costs included in selling, general and administrative expenses	'	'	'	434
Recognized amounts of identifiable assets acquired and liabilities assumed	'	'	'	'
Cash and cash equivalents	'	'	'	1,664
Current assets	'	'	'	11,327
Tangible fixed assets	'	'	'	2,010
Intangible assets	'	'	'	13,138
Deferred tax asset/ (liability), net	'	'	'	-2,711
Other non-current assets	'	'	'	971
Current liabilities	'	'	'	-9,062
Other liabilities	'	'	'	-4,188
Total identifiable net assets acquired	'	'	'	13,149
Goodwill	950,424	956,064	925,339	25,549
Total	'	'	'	$38,698

Fair_Value_and_Estimated_Usefu3

Fair Value and Estimated Useful Lives of Intangibles, Accounting Plaza (Detail) (Customer-Related Intangible Assets, USD $)	9 Months Ended		1 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013	Apr. 25, 2012	Apr. 25, 2012	Apr. 25, 2012
	Minimum	Maximum	Accounting Plaza B.V. ("Accounting Plaza")	Accounting Plaza B.V. ("Accounting Plaza")	Accounting Plaza B.V. ("Accounting Plaza")
				Minimum	Maximum
Acquired Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Intangible assets value	'	'	$13,138	'	'
Intangible assets estimated useful lives	'1 year	'14 years	'	'3 years	'10 years

ReMeasured_Fair_Value_of_EarnO

Re-Measured Fair Value of Earn-Out Consideration with Corresponding Changes in Consolidated Statements of Income (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013
Schedule of Changes in Fair Value of Contingent Consideration [Line Items]	'
Decrease in fair value of earn out consideration	($4,452)
Empower Research, LLC	'
Schedule of Changes in Fair Value of Contingent Consideration [Line Items]	'
Decrease in fair value of earn out consideration	-145
Triumph Engineering Corporation and Triumph On-Demand Inc	'
Schedule of Changes in Fair Value of Contingent Consideration [Line Items]	'
Decrease in fair value of earn out consideration	-2,150
Atyati Technologies Private Limited	'
Schedule of Changes in Fair Value of Contingent Consideration [Line Items]	'
Decrease in fair value of earn out consideration	-1,794
High Performance Partners LLC	'
Schedule of Changes in Fair Value of Contingent Consideration [Line Items]	'
Decrease in fair value of earn out consideration	($363)

Cash_and_Cash_Equivalents_Deta

Cash and Cash Equivalents (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
Cash and Cash Equivalents [Line Items]	'	'	'	'
Deposits with banks	$245,909	$283,660	'	'
Other cash and bank balances	235,589	175,568	'	'
Total	$481,498	$459,228	$394,503	$408,020

Cash_and_Cash_Equivalents_Addi

Cash and Cash Equivalents - Additional Information (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Cash and Cash Equivalents [Line Items]	'	'
Restricted cash balances	$874	$628

Reserve_for_Doubtful_Receivabl

Reserve for Doubtful Receivables (Detail) (USD $)	9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Provisions for Doubtful Accounts [Line Items]	'	'	'
Opening balance	$9,073	$8,704	$8,704
Additions due to acquisitions	'	'	184
Additions charged to cost and expense	8,919	2,780	3,878
Deductions	-3,473	'	-3,693
Closing balance	$14,519	'	$9,073

Accounts_Receivable_Net_of_Res2

Accounts Receivable, Net of Reserve for Doubtful Receivables - Additional Information (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Gross accounts receivable	$491,579	$461,062
Reserve for doubtful receivables	14,519	9,073
Net accounts receivable	477,060	451,989
Accounts receivable due after one year	17,006	19,140
Accounts receivable from related parties	63	64
Reserve for doubtful receivables from related parties	0	35
Net accounts receivable from related parties	$63	$29

Fair_Value_of_Assets_and_Liabi

Fair Value of Assets and Liabilities Measured on Recurring Basis, Including Derivative Instruments, U.S. Treasury Bills and Notes, and Loans Held for Sale (Detail) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Derivative instrument, asset	$6,768	[1]	$10,645	[1]
Total, assets	6,768		10,645
Derivative instrument, liability	277,459	[2]	174,076	[2]
Total, liabilities	277,459		174,076
Significant Other Observable Inputs (Level 2)	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Derivative instrument, asset	6,768	[1]	10,645	[1]
Total, assets	6,768		10,645
Derivative instrument, liability	277,459	[2]	174,076	[2]
Total, liabilities	$277,459		$174,076

[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.

Reconciliation_of_Loans_Held_f

Reconciliation of Loans Held for Sale Measured at Fair Value Using Significant Unobservable Inputs (Detail) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Opening balance, net	$360	$469
Impact of fair value included in earnings	0	-108
Settlements	0	-1
Closing balance, net	$360	$360

Derivative_Financial_Instrumen2

Derivative Financial Instruments - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013
Derivative [Line Items]	'
Forward foreign exchange contracts, minimum maturity period	'0 months
Forward foreign exchange contracts, maximum maturity period	'51 months

Aggregate_Notional_Principal_A

Aggregate Notional Principal Amounts of Outstanding Derivative Financial Instruments with Related Balance Sheet Exposure (Detail) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Derivative [Line Items]	'		'
Derivative financial instrument, balance sheet exposure asset (liability)	($270,691)	[1]	($163,431)	[1]
United States Dollars (sell) Indian Rupees (buy)	'		'
Derivative [Line Items]	'		'
Derivative instrument notional principal amount	1,472,000	[2]	1,706,000	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	-269,392	[1]	-160,432	[1]
United States Dollars (sell) Mexican Peso (buy)	'		'
Derivative [Line Items]	'		'
Derivative instrument notional principal amount	12,300	[2]	8,400	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	-422	[1]	306	[1]
United States Dollars (sell) Philippines Peso (buy)	'		'
Derivative [Line Items]	'		'
Derivative instrument notional principal amount	56,850	[2]	58,800	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	-1,723	[1]	2,237	[1]
Euro (sell) United States Dollars (buy)	'		'
Derivative [Line Items]	'		'
Derivative instrument notional principal amount	45,134	[2]	79,501	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	-1,836	[1]	-420	[1]
Euro (sell) Hungarian Forints (buy)	'		'
Derivative [Line Items]	'		'
Derivative instrument notional principal amount	5,598	[2]	9,968	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	51	[1]	-10	[1]
Euro (Sell) Romanian Leu (Buy)	'		'
Derivative [Line Items]	'		'
Derivative instrument notional principal amount	63,689	[2]	64,870	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	1,433	[1]	-645	[1]
Japanese Yen (sell) Chinese Renminbi (buy)	'		'
Derivative [Line Items]	'		'
Derivative instrument notional principal amount	29,573	[2]	26,214	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	2,046	[1]	1,451	[1]
Pound Sterling (sell) United States Dollars (buy)	'		'
Derivative [Line Items]	'		'
Derivative instrument notional principal amount	74,149	[2]	92,165	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	-2,791	[1]	-2,494	[1]
Australian Dollars (sell) United States Dollars (buy)	'		'
Derivative [Line Items]	'		'
Derivative instrument notional principal amount	59,450	[2]	60,626	[2]
Derivative financial instrument, balance sheet exposure asset (liability)	$1,943	[1]	($3,424)	[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 instruments agreements.

Fair_Value_of_Derivative_Instr

Fair Value of Derivative Instruments and Location in Financial Statements (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Cash Flow Hedging \| Prepaid Expenses and Other Current Assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair value of assets	$4,790	$6,972
Cash Flow Hedging \| Other Assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair value of assets	1,660	1,931
Cash Flow Hedging \| Accrued Expenses and Other Current Liabilities	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair value of liabilities	99,486	60,229
Cash Flow Hedging \| Other Liabilities	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair value of liabilities	166,571	112,430
Not Designated as Hedging Instrument \| Prepaid Expenses and Other Current Assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair value of assets	318	1,742
Not Designated as Hedging Instrument \| Accrued Expenses and Other Current Liabilities	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair value of liabilities	$11,402	$1,417

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		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Opening balance, before-tax amount	($207,373)	($255,562)	($163,756)	($203,006)
Net gains (losses) reclassified into statement of income on completion of hedged transactions, before-tax amount	-23,185	-15,813	-44,070	-22,654
Changes in fair value of effective portion of outstanding derivatives, net, before-tax amount	-75,420	99,280	-139,922	39,883
Gain (loss) on cash flow hedging derivatives, net, before-tax amount	-52,235	115,093	-95,852	62,537
Closing balance, before-tax amount	-259,608	-140,469	-259,608	-140,469
Opening balance, tax (expense) or benefit	73,239	90,440	59,070	71,125
Net gains (losses) reclassified into statement of income on completion of hedged transactions, tax (expense) or benefit	8,759	5,390	17,061	7,643
Changes in fair value of effective portion of outstanding derivatives, net, tax (expense) or benefit	27,031	-35,676	49,502	-14,108
Gain (loss) on cash flow hedging derivatives, net, tax (expense) or benefit	18,272	-41,066	32,441	-21,751
Closing balance, tax (expense) or benefit	91,511	49,374	91,511	49,374
Opening balance, net of tax amount	-134,134	-165,122	-104,686	-131,881
Net gains (losses) reclassified into statement of income on completion of hedged transactions, net of tax amount	-14,426	-10,423	-27,009	-15,011
Changes in fair value of effective portion of outstanding derivatives, net, net of tax amount	-48,389	63,604	-90,420	25,775
Gain (loss) on cash flow hedging derivatives, net of taxes amount	-33,963	74,027	-63,411	40,786
Closing balance, net of tax amount	($168,097)	($91,095)	($168,097)	($91,095)

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				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Other Comprehensive Income (Loss) [Line Items]	'		'		'		'
Amount of Gain (Loss) recognized in OCI on Derivatives (Effective Portion)	'		'		($139,922)		$39,883
Amount of Gain (Loss) reclassified from OCI into Statement of Income (Effective Portion)	-23,185		-15,813		-44,070		-22,654
Amount of Gain (Loss) recognized in income on Derivative (Ineffective Portion and Amount excluded from Effectiveness Testing)	'		'		'		'
Non designated Hedges, amount of (Gain) Loss recognized in Statement of Income on Derivative	11,359		-10,588		20,944		-9,002
Revenue	'		'		'		'
Other Comprehensive Income (Loss) [Line Items]	'		'		'		'
Amount of Gain (Loss) reclassified from OCI into Statement of Income (Effective Portion)	2,590		-1,144		5,957		-3,587
Cost of Revenue	'		'		'		'
Other Comprehensive Income (Loss) [Line Items]	'		'		'		'
Amount of Gain (Loss) reclassified from OCI into Statement of Income (Effective Portion)	-20,801		-11,614		-40,417		-15,025
Selling, General and Administrative Expenses	'		'		'		'
Other Comprehensive Income (Loss) [Line Items]	'		'		'		'
Amount of Gain (Loss) reclassified from OCI into Statement of Income (Effective Portion)	-4,974		-3,055		-9,610		-4,042
Forward Foreign Exchange Contracts (Note A)	'		'		'		'
Other Comprehensive Income (Loss) [Line Items]	'		'		'		'
Amount of Gain (Loss) recognized in OCI on Derivatives (Effective Portion)	'		'		-139,922		39,883
Amount of Gain (Loss) recognized in income on Derivative (Ineffective Portion and Amount excluded from Effectiveness Testing)	'		'		'		'
Forward Foreign Exchange Contracts (Note A) \| 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	$11,359	[1]	($10,588)	[1]	$20,944	[1]	($9,002)	[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 inter-company 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.

Property_Plant_and_Equipment_N2

Property, Plant and Equipment, Net (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	$486,112	$513,540
Less: Accumulated depreciation and amortization	-317,738	-313,178
Property, plant and equipment, net	$168,374	$200,362

Property_Plant_and_Equipment_N3

Property, Plant and Equipment, Net - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Property, Plant and Equipment [Line Items]	'	'	'	'
Depreciation and amortization	'	'	$40,270	$41,609
Depreciation Expense on Property, Plant And Equipment	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'
Depreciation and amortization	11,747	11,332	35,164	33,754
Computer Software Amortization	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'
Depreciation and amortization	2,438	2,881	7,541	8,840
Effect of Reclassification of Foreign Exchange (Gains) Losses	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'
Depreciation and amortization	$1,233	$750	$2,435	$985

Changes_in_Goodwill_Detail

Changes in Goodwill (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Goodwill [Line Items]	'	'
Opening balance	$956,064	$925,339
Goodwill relating to acquisitions consummated during the period	37,918	43,265
Adjustment to preliminary purchase accounting for acquisitions	-362	-3,213
Effect of exchange rate fluctuations	-43,196	-9,327
Closing balance	$950,424	$956,064

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Line Items]	'	'	'	'	'
Goodwill deductible for tax purposes	$39,260	'	$39,260	'	$6,779
Amortization of acquired intangible assets	5,867	6,014	17,603	17,094	'
Amortization of intangible assets recognized for minimum volume commitment from a client at the time of 2004 Reorganization	$0	$17	$0	$55	'

Intangible_Assets_Acquired_Eit

Intangible Assets Acquired Either Individually or with Group of Other Assets or in Business Combination (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross carrying amount	$337,473	$340,372
Accumulated amortization	230,541	227,985
Net	106,932	112,387
Customer-Related Intangible Assets	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross carrying amount	286,716	291,735
Accumulated amortization	207,466	206,987
Net	79,250	84,748
Marketing-Related Intangible Assets	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross carrying amount	40,654	40,386
Accumulated amortization	20,026	18,801
Net	20,628	21,585
Contract-Related Intangible Assets	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross carrying amount	1,028	1,182
Accumulated amortization	1,028	1,182
Other Intangible Assets	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross carrying amount	9,075	7,069
Accumulated amortization	2,021	1,015
Net	$7,054	$6,054

Net_Defined_Benefit_Plan_Costs

Net Defined Benefit Plan Costs (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service costs	$1,528	$693	$3,274	$2,667
Interest costs	869	331	1,756	1,246
Amortization of actuarial loss	200	193	650	532
Expected return on plan assets	-298	-187	-727	-599
Net Gratuity Plan costs	$2,299	$1,030	$4,953	$3,846

Amounts_Contributed_to_Defined

Amounts Contributed to Defined Contribution Plans in Various Jurisdictions (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	$9,410	$8,241	$28,951	$24,238
India	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	3,446	3,450	10,935	10,367
U.S.	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	620	696	2,561	2,462
U.K.	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	405	345	1,352	1,096
Hungary	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	6	6	18	52
China	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	3,899	3,092	10,781	8,670
Mexico	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	3	4	23	25
Morocco	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	20	33	71	122
South Africa	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	46	82	172	246
Hong Kong	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	4	10	15	27
Philippines	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	3	5	11	11
Japan	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	611	107	1,577	320
Singapore	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	2	'	8	'
Netherlands	'	'	'	'
Defined Contribution Plans In Various Jurisdictions [Line Items]	'	'	'	'
Defined contribution plans, contributed amount	$345	$411	$1,427	$840

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)

1 Months Ended

3 Months Ended

9 Months Ended

22 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

In Thousands, except Share data, unless otherwise specified

Aug. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2012

Apr. 11, 2012

Sep. 30, 2012

Sep. 30, 2013

Apr. 30, 2013

Jan. 31, 2013

Mar. 31, 2010

Mar. 31, 2013

Sep. 30, 2013

Dec. 31, 2011

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 01, 2009

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Apr. 30, 2013

Jan. 31, 2013

Apr. 30, 2013

Jan. 31, 2013

Person

2007 Omnibus Plan

2005 Omnibus Plan

Stock Option

Performance Units

Employee Stock Purchase Plan

Restricted Share Units

31-Dec-13

Adjustment Special Cash Dividend

Group One

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

495,915

Number of common shares authorized for issuance

15,000,000

Dividend per share

$2.24

Stock based compensation cost

$5,258

$5,579

$21,761

$22,745

Reduction in stock-based compensation costs

1,670

Unrecognized stock-based compensation cost for options

25,728

Weighted average remaining requisite vesting period

'4 years

'1 year 1 month 6 days

'1 year 10 months 24 days

Minimum vesting schedules, months

'6 months

Maximum vesting schedules, years

'3 years

'4 years

Shares issued on vested awards other than options

503,969

243,781

4,000

102,000

1,819

100,800

RSUs settled on vesting by issuing shares (net of minimum tax withholding)

188,966

240

13,557

533

13,719

Vested RSU against which shares to be issued

44,286

Unrecognized share-based compensation costs

9,429

12,427

Percentage of actual vesting

90.90%

128.90%

122.20%

Shares issued net of tax withholdings

4,679

156,511

334,922

Shares to be issued on vested awards other than options

231,029

Stock options vesting period, years

'3 years

Incremental compensation cost

5,500

4,109

Incremental compensation cost recognition period

'21 months 15 days

Transfer of minimum percentage of voting power of company for change of control

25.00%

Number of employee affected

123

Weighted average period not yet recognized

'1 year 10 months 6 days

Percentage of fair value 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

Common shares reserved for issuance

4,200,000

Number of common shares issued under ESPP

81,040

63,106

Compensation expense for ESPP

$54

$34

$170

$111

Significant_Assumptions_used_i

Significant Assumptions used in Determination of Fair Value of Options (Detail)	9 Months Ended
	Sep. 30, 2013
Assumptions used to Determine Fair Value Options [Line Items]	'
Dividend Yield	0.00%
Expected life (in months)	'84 months
Risk free rate of interest	1.55%
Volatility	39.39%

Summary_of_Options_Activity_De

Summary of Options Activity (Detail) (USD $)	9 Months Ended		12 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Shares arising out of options	'		'
Outstanding, shares arising out of options, beginning balance	12,413,298		'
Granted, shares arising out of options	3,483,000		'
Forfeited, shares arising out of options	-63,056		'
Expired, shares arising out of options	-67,978		'
Exercised, shares arising out of options	-3,784,851		'
Outstanding, shares arising out of options, ending balance	11,980,413		12,413,298
Vested and expected to vest thereafter, shares arising out of options	11,596,240	[1]	'
Vested and exercisable, shares arising out of options	7,547,192		'
Weighted average grant date fair value of grants during the year	$19.35		'
Weighted average exercise price	'		'
Outstanding weighted average exercise price, beginning balance	$9.29		'
Granted, weighted average exercise price	$19.35		'
Forfeited, weighted average exercise price	$10.47		'
Expired, weighted average exercise price	$13.79		'
Exercised, weighted average exercise price	$8.76		'
Outstanding weighted average exercise price, ending balance	$12.35		$9.29
Vested and expected to vest thereafter, weighted average exercise price	$12.07	[1]	'
Vested and exercisable, weighted average exercise price	$9.27		'
Weighted average remaining contractual life (years)	'		'
Outstanding weighted average remaining contractual life (years)	'5 years 3 months 26 days		'4 years 2 months 12 days
Vested and expected to vest thereafter, weighted average remaining contractual life (years)	'5 years 3 months 26 days	[1]	'
Vested and Exercisable, weighted average remaining contractual life (years)	'3 years 2 months 27 days		'
Aggregate intrinsic value	'		'
Exercised, aggregate intrinsic value	$38,149		'
Outstanding aggregate intrinsic value, ending balance	80,652		'
Vested and expected to vest thereafter, aggregate intrinsic value	80,471	[1]	'
Vested and Exercisable, aggregate intrinsic value	$72,524		'

[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, USD $)	9 Months Ended
	Sep. 30, 2013
Restricted Share Units	'
Number of Restricted Share units	'
Outstanding number of Shares (Units), beginning balance	1,688,402
Granted, number of Shares (Units)	91,623
Vested, number of shares (Units)	-294,451	[1]
Forfeited, number of shares (Units)	-190,665
Outstanding number of shares (Units), ending balance	1,294,909
Expected to vest, number of shares (Units)	1,165,351	[2]
Weighted Average Grant Date Fair Value	'
Outstanding weighted average grant date fair value, beginning balance	$13.74
Granted, weighted average grant date fair value	$19.52
Vested, weighted average grant date fair value	$14.49	[1]
Forfeited, weighted average grant date fair value	$13.62
Outstanding weighted Average Grant Date Fair Value, ending balance	$14

[1]	Vested RSUs have been net settled upon vesting by issuing 188,966 shares (net of minimum statutory withholding taxes).
[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)	9 Months Ended
	Sep. 30, 2013
Restricted Share Units	'
Schedule Of Activity Related To Restricted Shares And Restricted Share [Line Items]	'
RSUs settled on vesting by issuing shares (net of minimum tax withholding)	188,966

Summary_of_Performance_Units_A

Summary of Performance Units Activity (Detail) (Performance Units, USD $)	9 Months Ended
	Sep. 30, 2013
Performance Units	'
Number of Share Units	'
Outstanding number of Shares (Units), beginning balance	3,041,511
Granted, number of Shares (Units)	2,025,090
Vested, number of shares (Units)	'
Forfeited, number of shares (Units)	-200,654
Addition due to achievement of higher than target performance goals, number of shares (Units)	297,911	[1]
Outstanding number of shares (Units), ending balance	5,163,858
Expected to vest	2,542,867	[2]
Weighted Average Grant Date Fair Value	'
Outstanding weighted average grant date fair value, beginning balance	$13.26
Granted, weighted average grant date fair value	$18.57
Vested, weighted average grant date fair value	'
Forfeited, weighted average grant date fair value	$15.13
Addition due to achievement of higher than target performance goals	$17.50	[1]
Outstanding weighted Average Grant Date Fair Value, ending balance	$15.51
Maximum shares eligible to receive	'
Outstanding maximum shares eligible to receive, beginning balance	4,402,597
Granted, maximum shares eligible to receive	3,694,635
Vested, maximum shares eligible to receive	'
Forfeited, maximum shares eligible to receive	-256,064
Reduction due to achievement of lower than maximum performance goals, maximum shares eligible to receive	-373,702	[3]
Outstanding maximum shares eligible to receive, ending balance	7,467,466

[1]	Represents the additional award of 22.2% of the target shares on account of the achievement of higher than target performance for the PUs granted in March 2012.
[2]	PUs expected to vest are based on the probable achievement of the performance targets after considering an estimated forfeiture rate
[3]	Represents a 27.8% reduction in the maximum shares eligible to vest on account of the certification of the performance goals for the PUs granted in 2012.

Summary_of_Performance_Units_A1

Summary of Performance Units Activity (Parenthetical) (Detail) (Performance Units)	Sep. 30, 2013
Performance Units	'
Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Performance Share Units [Line Items]	'
Percentage change on achievement of performance goals	22.20%
Percentage Change on achievement of performance goals	27.80%

Modification_of_Performance_Me

Modification of Performance Metrics for Performance Grants Made to Employees (Detail) (Performance Grants Made to Employees)	3 Months Ended
	Mar. 31, 2011
Performance Grants Made to Employees	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Original Performance Target, Revenue Growth, Outstanding	20.00%
Original Performance Target, Revenue Growth, Target	15.00%
Original Performance Target, Revenue Growth, Threshold	10.00%
Original Performance Target, EBITDA Growth, Outstanding	20.00%
Original Performance Target, EBITDA Growth, Target	15.00%
Original Performance Target, EBITDA Growth, Threshold	10.00%
Modified Performance Target, Revenue Growth, Outstanding	20.00%
Modified Performance Target, Revenue Growth, Target	15.00%
Modified Performance Target, Revenue Growth, Threshold	10.00%
Modified Performance Target, Adjusted Income from Operation growth, Outstanding	20.00%
Modified Performance Target, Adjusted Income from Operation growth, Target	15.00%
Modified Performance Target, Adjusted Income from Operation growth, Threshold	10.00%

Modification_of_Performance_Me1

Modification of Performance Metrics for Performance Grants Made to Former Chief Executive Officer (Detail) (Performance Grant Made to Former CEO)	3 Months Ended
	Mar. 31, 2011
Performance Grant Made to Former CEO	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Original Performance Target, Revenue Growth, Outstanding	20.00%
Original Performance Target, Revenue Growth, Target	15.00%
Original Performance Target, Revenue Growth, Threshold	10.00%
Original Performance Target, EBITDA Growth, Outstanding	20.00%
Original Performance Target, EBITDA Growth, Target	15.00%
Original Performance Target, EBITDA Growth, Threshold	10.00%
Modified Performance Target, Revenue Growth, Outstanding	17.00%
Modified Performance Target, Revenue Growth, Target	12.50%
Modified Performance Target, Revenue Growth, Threshold	8.00%
Modified Performance Target, Adjusted Income from Operation growth, Outstanding	16.00%
Modified Performance Target, Adjusted Income from Operation growth, Target	12.50%
Modified Performance Target, Adjusted Income from Operation growth, Threshold	7.00%

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
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	3,483,000	285,000	2,327,000	4,366,422

Earnings_Per_Share_Detail

Earnings Per Share (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share (Abstract)	'	'	'	'
Net income available to Genpact Limited common shareholders	$70,262	$25,175	$180,875	$124,815
Weighted average number of common shares used in computing basic earnings per common share	230,057,508	223,876,035	228,840,746	223,289,507
Dilutive effect of stock-based awards	6,279,416	6,319,799	6,254,914	5,226,884
Weighted average number of common shares used in computing dilutive earnings per common share	236,336,924	230,195,834	235,095,660	228,516,391
Earnings per common share attributable to Genpact Limited common shareholders, Basic	$0.31	$0.11	$0.79	$0.56
Earnings per common share attributable to Genpact Limited common shareholders, Diluted	$0.30	$0.11	$0.77	$0.55

ShortTerm_Borrowing_Additional

Short-Term Borrowing - Additional Information (Detail) (USD $)

9 Months Ended

12 Months Ended

6 Months Ended

9 Months Ended

6 Months Ended

9 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Aug. 30, 2012

31-May-11

Jun. 30, 2013

Aug. 30, 2012

31-May-11

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Jun. 30, 2013

Sep. 30, 2013

Revolving Credit Facility

Fund-Based Credit Facility

Non-Fund-Based Credit Facility

Original Margin

Line of Credit Facility [Line Items]

Fund-based and non-fund-based credit facilities limits available

$16,393

$18,489

Utilization of credit facility for non fund-based usage

6,686

5,942

Credit facility, maximum borrowing capacity

925,000

380,000

250,000

260,000

Credit facility, amount utilized

$87,439

$4,397

$80,000

$7,439

$4,397

Margin over LIBOR

2.75%

3.25%

2.50%

3.25%

Percentage of commitment fee

0.50%

Revolving credit facility, expiration month and year

'2017-08

Line of credit covenant condition

'Indebtedness under these facilities is secured by certain assets 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.

LongTerm_Debt_Additional_Infor

Long-Term Debt - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Aug. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	31-May-11
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Credit facility, maximum borrowing capacity	$925,000	'	'	'	'	'	'	$380,000
Termination of credit facility	380,000	'	'	'	'	'	'	'
Credit facility, maximum borrowing capacity, outstanding	380,000	'	'	'	'	'	'	'
Margin over LIBOR	'	'	'	'	2.75%	'	3.25%	'
LIBOR floor rate	'	'	'	0.75%	0.75%	'	1.00%	'
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	'	'	'	'
Acceleration amortization of debt issuance cost	'	0	5,534	'	3,157	5,534	'	'
Term loan amounts outstanding	'	658,920	'	'	658,920	'	661,861	'
Debt amortization expense	'	'	'	'	14,392	'	11,452	'
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	'	'	'
Term-Loan Credit Facility	'	'	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Credit facility, maximum borrowing capacity	675,000	'	'	675,000	'	'	'	120,000
Margin over LIBOR	'	'	'	2.75%	'	'	'	'
Revolving Credit Facility	'	'	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Credit facility, maximum borrowing capacity	250,000	'	'	'	'	'	'	260,000
Margin over LIBOR	'	'	'	2.50%	'	'	'	'
Original Margin	'	'	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Margin over LIBOR	'	'	'	3.25%	3.25%	'	'	'
LIBOR floor rate	'	'	'	1.00%	'	'	'	'
Term Loans	'	'	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Acceleration amortization of debt issuance cost	'	'	'	3,103	'	'	'	'
Revolving Credit Facilities	'	'	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Acceleration amortization of debt issuance cost	'	'	'	$54	'	'	'	'

Maturity_Profile_of_Term_Loan_

Maturity Profile of Term Loan Net of Debt Amortization Expense (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Long-Term Debt	'	'
2013	$1,056	'
2014	4,263	'
2015	4,288	'
2016	4,306	'
2017	4,338	'
2018	4,363	'
2019	636,306	'
Term loan amounts outstanding	$658,920	$661,861

Cost_of_Revenue_Detail

Cost of Revenue (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Component of Operating Other Cost and Expense [Abstract]	'	'	'	'
Cost of revenue	$329,289	$297,253	$973,729	$847,940
Personnel expenses	'	'	'	'
Component of Operating Other Cost and Expense [Abstract]	'	'	'	'
Cost of revenue	223,976	203,011	671,518	583,649
Operational expenses	'	'	'	'
Component of Operating Other Cost and Expense [Abstract]	'	'	'	'
Cost of revenue	93,235	82,227	265,894	228,256
Depreciation and amortization	'	'	'	'
Component of Operating Other Cost and Expense [Abstract]	'	'	'	'
Cost of revenue	$12,078	$12,015	$36,317	$36,035

Selling_General_and_Administra2

Selling, General and Administrative Expenses (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Component of Operating Other Cost and Expense [Abstract]	'	'	'	'
Selling, general and administrative expenses	$117,005	$118,536	$348,632	$337,794
Personnel expenses	'	'	'	'
Component of Operating Other Cost and Expense [Abstract]	'	'	'	'
Selling, general and administrative expenses	83,580	80,421	251,379	230,917
Operational expenses	'	'	'	'
Component of Operating Other Cost and Expense [Abstract]	'	'	'	'
Selling, general and administrative expenses	31,318	35,916	90,865	100,318
Depreciation and amortization	'	'	'	'
Component of Operating Other Cost and Expense [Abstract]	'	'	'	'
Selling, general and administrative expenses	$2,107	$2,199	$6,388	$6,559

Other_Operating_Income_Expense2

Other Operating Income (Expense), Net (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Components of Other Operating Income [Line Items]	'	'	'	'
Other operating (income) expense	($1,051)	($789)	($2,260)	($2,302)
Provision for impairment of capital work in progress / property, plant and equipment	'	2,121	2,392	2,121
Change in fair value of earn out consideration and deferred consideration (relating to business acquisitions)	-2,181	-1,930	-4,452	-1,930
Other operating (income) expense, net	($3,232)	($598)	($4,320)	($2,111)

Other_Income_Expense_Net_Detai

Other Income (Expense), Net (Detail) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Other Income (Expense), Net	'		'		'		'
Interest income	$4,355		$2,455		$14,114		$7,965
Interest expense	-8,134	[1]	-11,022	[1]	-30,861	[1]	-17,987	[1]
Provision (created) reversed for loss on divestitures	141		'		-3,520		'
Other income (expense)	184	[2]	-6,365	[2]	1,163	[2]	-5,733	[2]
Other income (expense), net	($3,454)		($14,932)		($19,104)		($15,755)

[1]	Three months ended September 30, 2012 and 2013 include $5,534 and $0, respectively, and nine months ended September 30, 2012 and 2013 include $5,534 and $3,157, respectively, representing acceleration of the amortization of debt issuance costs relating to the prepayment and termination of the previous credit facility in August 2012 and amendment of the new credit facility in June 2013, respectively, as described in Note 14.
[2]	Three months and nine months ended September 30, 2012 include $6,607, representing 2012 recapitalization expenses, as described in Note 1.

Other_Income_Expense_Net_Paren

Other Income (Expense), Net (Parenthetical) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Components of Other Income (Expense) [Line Items]	'	'	'	'
Acceleration amortization of debt issuance cost	$0	$5,534	$3,157	$5,534
Total expenses incurred for 2012 recapitalization	'	$6,607	'	$6,607

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Income Tax Disclosure [Line Items]	'	'	'	'	'
Effective tax rate	23.80%	37.70%	24.40%	29.90%	'
Recapitalization expenses	'	$2,300	'	'	'
Unrecognized tax benefits	20,989	'	20,989	'	21,024
Unrecognized tax benefits that would impact effective tax rate	20,831	'	20,831	'	20,871
Unrecognized tax benefits, interest on income taxes accrued	$3,841	'	$3,841	'	$3,423

Activities_Related_to_Unrecogn

Activities Related to Unrecognized Tax Benefits for Uncertain Tax Positions (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013
Schedule of Unrecognized Tax Benefits [Line Items]	'
Beginning Balance	$21,024
Increase related to prior year tax positions, including recorded against goodwill	1,503
Decrease related to prior year tax positions	-719
Increase related to current year tax positions	1,217
Effect of exchange rate changes	-2,036
Ending Balance	$20,989

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2012

Sep. 30, 2013

Non-Consolidating Affiliates

Customer Which Has Significant Interest In The Company

Customer In Which Company's Directors Have Controlling Interest

Affiliate of Significant Shareholder

Maximum

Related Party Transaction [Line Items]

Percent of ownership held

5.00%

Recognized net revenues

$190

$170

$571

$487

$117

$344

$53

$143

$190

$571

Cost of revenue

563

670

1,527

1,754

Selling, general and administrative expenses

135

198

356

408

Investment in equity affiliates

$205

Dividend_Additional_Informatio

Dividend - Additional Information (Detail) (USD $)	1 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Aug. 30, 2012	Aug. 01, 2012	Sep. 30, 2012
Dividends [Line Items]	'	'	'
Dividend per share	$2.24	'	'
Special cash dividend declared	$501,620	'	$501,620
Declaration of special cash dividend, payment date	'	24-Sep-12	'
Declaration of special cash dividend, record date	'	10-Sep-12	'

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Commitments and Contingencies [Line Items]	'	'
Commitments and contingencies	'	'
Commitment To Purchase Property, Plant and Equipment	'	'
Commitments and Contingencies [Line Items]	'	'
Commitments and contingencies	4,772	3,965
Outstanding Bank Guarantees	'	'
Commitments and Contingencies [Line Items]	'	'
Commitments and contingencies	$11,083	$13,381