Genpact Limited (G) 10-Q 9 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 31, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	G
Entity Registrant Name	GENPACT LTD
Entity Central Index Key	1,398,659
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		193,042,398

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 440,055	$ 422,623
Accounts receivable, net	670,692	615,265
Prepaid expenses and other current assets	243,867	189,149
Total current assets	1,354,614	1,227,037
Property, plant and equipment, net	205,623	193,218
Deferred tax assets	75,273	70,143
Investment in equity affiliates	833	4,800
Intangible assets, net	138,215	78,946
Goodwill	1,315,312	1,069,408
Other assets	260,021	242,328
Total assets	3,349,891	2,885,880
Current liabilities
Short-term borrowings	160,000	160,000
Current portion of long-term debt	39,224	39,181
Accounts payable	16,858	9,768
Income taxes payable	66,328	24,159
Accrued expenses and other current liabilities	540,743	498,247
Total current liabilities	823,153	731,355
Long-term debt, less current portion	1,016,371	698,152
Deferred tax liabilities	7,210	2,415
Other liabilities	184,965	162,790
Total liabilities	2,031,699	1,594,712
Redeemable non-controlling interest	3,839	4,520
Shareholders' equity
Preferred shares, $0.01 par value, 250,000,000 authorized, none issued
Common shares, $0.01 par value, 500,000,000 authorized, 198,794,052 and 193,033,898 issued and outstanding as of December 31, 2016 and September 30, 2017, respectively	1,926	1,984
Additional paid-in capital	1,369,392	1,384,468
Retained earnings	338,349	358,121
Accumulated other comprehensive income (loss)	(395,314)	(457,925)
Total equity	1,314,353	1,286,648
Commitments and contingencies
Total liabilities, redeemable non-controlling interest and equity	$ 3,349,891	$ 2,885,880

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Preferred shares, par value	$ 0.01	$ 0.01
Preferred shares, authorized	250,000,000	250,000,000
Preferred shares, issued	0	0
Common shares, par value	$ 0.01	$ 0.01
Common shares, authorized	500,000,000	500,000,000
Common shares, issued	193,033,898	198,794,052
Common shares, outstanding	193,033,898	198,794,052

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	[1]	Sep. 30, 2017	Sep. 30, 2016	[1]
Income Statement [Abstract]
Net revenues	$ 708,824	$ 648,783		$ 2,002,516	$ 1,889,009
Cost of revenue	429,191	392,432		1,227,821	1,149,035
Gross profit	279,633	256,351		774,695	739,974
Operating expenses:
Selling, general and administrative expenses	172,095	156,969		500,854	482,315
Amortization of acquired intangible assets	10,151	7,126		25,780	19,764	[2]
Other operating (income) expense, net	(64)	5,132		(8,517)	(4,791)
Income from operations	97,451	87,124		256,578	242,686
Foreign exchange gains (losses), net	5,045	(654)		2,045	3,156
Interest income (expense), net	(8,724)	(4,901)		(24,067)	(11,172)
Other income (expense), net	(4,030)	5,791		9,011	7,172
Income before equity-method investment activity, net and income tax expense	89,742	87,360		243,567	241,842
Equity-method investment activity, net		(2,117)		(4,567)	(6,336)	[2]
Income before income tax expense	89,742	85,243		239,000	235,506
Income tax expense	16,581	17,055		44,297	44,026
Net income	73,161	68,188		194,703	191,480	[2]
Net loss attributable to redeemable non-controlling interest	584	734		1,326	1,905	[2]
Net income attributable to Genpact Limited shareholders	73,745	68,922		196,029	193,385	[2]
Net income available to Genpact Limited common shareholders	$ 73,745	$ 68,922		$ 196,029	$ 193,385
Earnings per common share attributable to Genpact Limited common shareholders
Basic	$ 0.38	$ 0.33		$ 1.01	$ 0.93
Diluted	$ 0.38	$ 0.33		$ 0.99	$ 0.91
Weighted average number of common shares used in computing earnings per common share attributable to Genpact Limited common shareholders
Basic	192,124,366	206,146,007		194,221,162	209,034,741
Diluted	194,947,699	209,376,683		197,112,014	212,357,594
[1]	Income taxes, net income and basic and diluted net income per common share for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.
[2]	Income taxes, net income and cash flows for the nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016		Sep. 30, 2017	Sep. 30, 2016
Net Income (loss)	$ 73,161	$ 68,188	[1]	$ 194,703	$ 191,480	[1],[2]
Other comprehensive income:
Net income (loss) on cash flow hedging derivatives, net of taxes (Note 7)	(14,874)	19,772		(5,627)	18,187
Genpact Limited Shareholders
Net Income (loss)	73,745	68,922	[3]	196,029	193,385	[3]
Other comprehensive income:
Currency translation adjustments	(4,185)	11,224	[3]	67,527	(8,614)	[3]
Net income (loss) on cash flow hedging derivatives, net of taxes (Note 7)	(14,874)	19,772	[3]	(5,627)	18,187	[3]
Retirement benefits, net of taxes	369	561	[3]	711	701	[3]
Other comprehensive income (loss)	(18,690)	31,557	[3]	62,611	10,274	[3]
Comprehensive income (loss)	55,055	100,479	[3]	258,640	203,659	[3]
Redeemable non-controlling interest
Net Income (loss)	(584)	(734)	[3]	(1,326)	(1,905)	[3]
Other comprehensive income:
Currency translation adjustments	(256)	14	[3]	(334)	53	[3]
Other comprehensive income (loss)	(256)	14	[3]	(334)	53	[3]
Comprehensive income (loss)	$ (840)	$ (720)	[3]	$ (1,660)	$ (1,852)	[3]
[1]	Income taxes, net income and basic and diluted net income per common share for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.
[2]	Income taxes, net income and cash flows for the nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.
[3]	Net income for the three months and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Consolidated Statements of Equi

Consolidated Statements of Equity and Redeemable Non-controlling Interest - USD ($) $ in Thousands	Total		Common shares	Additional Paid- in Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)	Total Equity		Redeemable non-controlling interest
Beginning balance, value at Dec. 31, 2015			$ 2,111	$ 1,342,022	[1]	$ 411,508	[1]	$ (451,285)	$ 1,304,356
Beginning balance, value (in shares) at Dec. 31, 2015			211,472,312
Issuance of common shares on exercise of options			$ 7	10,348	[1]				10,355
Issuance of common shares on exercise of options (in shares)			655,717
Issuance of common shares under the employee stock purchase plan			$ 1	2,452	[1]				2,453
Issuance of common shares under the employee stock purchase plan (in shares)			105,856
Net settlement on vesting of restricted share units			$ 1	(462)	[1]				(461)
Net settlement on vesting of restricted share units, shares			120,307
Stock repurchased and retired			$ (96)			(242,456)	[1]		(242,552)
Stock repurchased and retired, shares			(9,615,323)
Deferred tax assets recognized on early adoption of ASU 2016-09						24,912	[1]		24,912
Expenses related to stock purchase	$ (192)					(192)	[1]		(192)
Stock-based compensation expense				18,344	[1]				18,344
Acquisition of redeemable non controlling interest											$ 3,910
Comprehensive income:
Net income	$ 191,480	[2],[3]				193,385	[1]		193,385	[4]	(1,905)	[4]
Other comprehensive income								10,274	10,274	[4]	53	[4]
End balance, value at Sep. 30, 2016			$ 2,024	1,372,704	[1]	387,157	[1]	(441,011)	1,320,874		2,058
End balance, value (in shares) at Sep. 30, 2016			202,738,869
Beginning balance, value at Dec. 31, 2016			$ 1,984	1,384,468		358,121		(457,925)	1,286,648		4,520
Beginning balance, value (in shares) at Dec. 31, 2016	198,794,052		198,794,052
Issuance of common shares on exercise of options			$ 6	9,237					9,243
Issuance of common shares on exercise of options (in shares)	641,900		641,900
Issuance of common shares under the employee stock purchase plan			$ 2	3,589					3,591
Issuance of common shares under the employee stock purchase plan (in shares)			150,265
Net settlement on vesting of restricted share units			$ 1	(358)					(357)
Net settlement on vesting of restricted share units, shares			103,220
Net settlement on vesting of performance units			$ 7	(9,946)					(9,939)
Net settlement on vesting of performance units, shares	731,701		731,701
Stock repurchased and retired			$ (74)	(40,000)		(179,710)			(219,784)
Stock repurchased and retired, shares			(7,387,240)
Expenses related to stock purchase	$ (16)					(16)			(16)
Stock-based compensation expense				22,402					22,402
Change in fair value of redemeedable non-controlling interest						(979)			(979)		979
Comprehensive income:
Net income	$ 194,703					196,029			196,029		(1,326)
Other comprehensive income								62,611	62,611		(334)
Dividend						(35,096)			(35,096)
End balance, value at Sep. 30, 2017			$ 1,926	$ 1,369,392		$ 338,349		$ (395,314)	$ 1,314,353		$ 3,839
End balance, value (in shares) at Sep. 30, 2017	193,033,898		193,033,898
[1]	Net income, additional paid-in capital and retained earnings for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.
[2]	Income taxes, net income and basic and diluted net income per common share for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.
[3]	Income taxes, net income and cash flows for the nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.
[4]	Net income for the three months and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016
Operating activities
Net income attributable to Genpact Limited shareholders		$ 196,029	$ 193,385	[1],[2]
Net loss attributable to redeemable non-controlling interest		(1,326)	(1,905)	[1],[2]
Net income		194,703	191,480	[1],[2]
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation and amortization		42,271	40,366	[2]
Amortization of debt issuance costs		1,382	1,150	[2]
Amortization of acquired intangible assets		25,780	19,764	[1],[2]
Intangible assets write-down	[2]		11,195
Reserve for doubtful receivables		4,871	7,307	[2]
Unrealized loss (gain) on revaluation of foreign currency asset/liability		9,296	(1,304)	[2]
Equity-method investment activity, net		4,567	6,336	[1],[2]
Stock-based compensation expense		22,402	18,344	[2]
Deferred income taxes		(4,589)	20,729	[2]
Gain on divestiture	[2]		(5,214)
Provision for expected loss on divestiture		5,195
Others, net		(5,261)	29	[2]
Change in operating assets and liabilities:
Increase in accounts receivable		(30,687)	(33,760)	[2]
Increase in prepaid expenses, other current assets and other assets		(56,230)	(64,252)	[2]
Decrease in accounts payable		(462)	(397)	[2]
Increase/(decrease) in accrued expenses, other current liabilities and other liabilities		27,723	(14,797)	[2]
Increase in income taxes payable		41,324	36,420	[2]
Net cash provided by operating activities		263,693	236,004	[2]
Investing activities
Purchase of property, plant and equipment & intangibles		(56,460)	(64,441)	[2]
Proceeds from sale of property, plant and equipment		1,648	334	[2]
Investment in equity affiliates		(496)	(7,519)	[2]
Payment for business acquisitions, net of cash acquired		(277,549)	(41,558)	[2]
Proceeds from divestiture of business, net of cash divested	[2]		17,582
Net cash used for investing activities		(332,857)	(95,602)	[2]
Financing activities
Repayment of capital lease obligations		(2,199)	(1,344)	[2]
Payment of debt issuance costs		(1,481)
Proceeds from long-term debt		350,000
Repayment of long-term debt		(30,000)	(30,000)	[2]
Proceeds from short-term borrowings		275,000	155,000	[2]
Repayment of short-term borrowings		(275,000)	(61,500)	[2]
Proceeds from issuance of common shares under stock-based compensation plans		12,834	12,808	[2]
Payment for net settlement of stock-based awards		(10,296)	(461)	[2]
Payment of earn-out/deferred consideration		(6,219)	(1,406)	[2]
Dividend paid		(35,096)
Payment for stock purchased and retired		(219,784)	(242,552)	[2]
Payment for expenses related to stock purchase		(16)	(192)	[2]
Net cash provided by (used for) financing activities		57,743	(169,647)	[2]
Effect of exchange rate changes		28,853	(2,570)	[2]
Net increase (decrease) in cash and cash equivalents		(11,421)	(29,245)	[2]
Cash and cash equivalents at the beginning of the period		422,623	450,907	[2]
Cash and cash equivalents at the end of the period		440,055	419,092	[2]
Supplementary information
Cash paid during the period for interest		23,414	13,267	[2]
Cash paid during the period for income taxes		46,935	40,294	[2]
Property, plant and equipment acquired under capital lease obligations		$ 1,944	$ 1,667	[2]
[1]	Income taxes, net income and basic and diluted net income per common share for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.
[2]	Income taxes, net income and cash flows for the nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Organization

Organization	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Organization	1. Organization The Company is a global professional services firm focused on driving digital-led innovation and running digitally-enabled intelligent operations for its clients. Guided by its experience running thousands of processes for hundreds of Fortune 500 clients since its founding, the Company strives to help its clients achieve their operational goals by applying its industry expertise, proprietary digital technology and analytics Prior to December 30, 2004, the business of the Company was conducted through various entities and divisions of GE. On December 30, 2004, GE transferred such operations to the Company. In August 2007, the Company completed an initial public offering of its common shares. On October 25, 2012, Glory Investments A Limited (“Glory Investments”), formerly known as South Asia Private Investments, an affiliate of Bain Capital Investors, LLC, became the Company’s largest shareholder when, together with its affiliated assignees and two additional co-investors, it purchased 67,750,678 common shares of the Company from the Company’s initial investors. On August 18, 2017, Glory Investments and its affiliated assignees, together with one of its co-investors, sold 10,000,000 common shares of the Company in an underwritten public offering. The Company did not receive any proceeds from the offering.

Summary of significant accounti

Summary of significant accounting policies	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
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, 2016. 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 interim periods are not necessarily indicative of results for the full year. The accompanying unaudited interim consolidated financial statements have been prepared on a consolidated basis and reflect the financial statements of Genpact Limited, a Bermuda company, and all of its subsidiaries that are more than 50% owned and controlled. When the Company does not have a controlling interest in an entity but exerts significant influence on the entity, the Company applies the equity method of accounting. All intercompany transactions and balances are eliminated in consolidation. Non-controlling interest in subsidiaries that is redeemable outside of the Company’s control for cash or other assets is reflected in the mezzanine section between liabilities and equity in the consolidated balance sheets at the redeemable value, which approximates fair value. Redeemable non-controlling interest is adjusted to its fair value at each balance sheet date. Any resulting increases or decreases in the estimated redemption amount are affected by corresponding changes to retained earnings. The share of non-controlling interest in subsidiary earnings is reflected in net loss (income) attributable to redeemable non-controlling interest in the 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, intangibles and goodwill, revenue recognition, reserves for doubtful receivables, valuation allowances for deferred tax assets, the valuation of derivative financial instruments, measurements of stock-based compensation, assets and obligations related to employee benefits, and income tax uncertainties and other contingencies. Management believes that the estimates used in the preparation of the consolidated financial statements are reasonable. Although these estimates are based upon management’s best knowledge of current events and actions, actual results could differ from these estimates. Any changes in estimates are adjusted prospectively in the Company’s consolidated financial statements. 2. Summary of significant accounting policies (Continued) (c) Business combinations, goodwill and other intangible assets The Company accounts for its business combinations using the acquisition method of accounting in accordance with ASC 805, Business Combinations, by recognizing the identifiable tangible and intangible assets acquired and liabilities assumed, and any non-controlling interest in the acquired business, measured at their acquisition date fair values. Contingent consideration is included within the acquisition cost and is recognized at its fair value on the acquisition date. A liability resulting from contingent consideration is remeasured to fair value as of each reporting date until the contingency is resolved. Changes in fair value are recognized in earnings. All assets and liabilities of the acquired businesses, including goodwill, are assigned to reporting units. Acquisition-related costs are expensed as incurred under Selling, General and Administrative Expenses. Goodwill represents the cost of acquired businesses in excess of the fair value of identifiable tangible and intangible net assets purchased. Goodwill is not amortized but is tested for impairment at least on an annual basis on December 31, based on a number of factors, including operating results, business plans and future cash flows. The Company performs an assessment of qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. Based on the assessment of events or circumstances, the Company performs a 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 a reporting unit exceeds the fair value of such goodwill, an impairment loss is recognized in an amount equal to the excess. In addition, the Company performs a 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 a reporting unit below its carrying amount. See Note 10 for information and related disclosures. Intangible assets acquired individually or with a group of other assets or in a business combination and developed internally 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 Technology-related intangible assets 2-8 years Other intangible assets 2-9 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, 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 15% and 11% of receivables as of December 31, 2016 and September 30, 2017, respectively. GE accounted for 15% and 10% of total revenue for the nine months ended September 30, 2016 and 2017, respectively, and 17% and 10% of total revenue for the three months ended September 30, 2016 and 2017, respectively. 2. Summary of significant accounting policies (Continued) (e) Recently issued accounting pronouncements The authoritative bodies release standards and guidance which are assessed by management for impact on the Company’s consolidated financial statements. The Company has adopted the following recently released accounting standard: In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvement to Employee Share-Based Payment Accounting. The new standard contains several amendments that will simplify the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures, statutory tax withholding requirements, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The changes in the new standard eliminate the requirement for excess tax benefits to be recognized in additional paid-in capital and tax deficiencies recognized either in income tax expense or in additional paid-in capital. In the quarter ended December 31, 2016, the Company elected to early adopt ASU 2016-09 effective January 1, 2016 and will continue to apply ASU 2016-09 using a modified retrospective approach. The treatment of forfeitures has not changed as the Company is electing to continue its current process of estimating the number of forfeitures. With the early adoption of ASU 2016-09, the Company has elected to present the cash flow statement on a prospective transition method and no prior periods have been adjusted. As a result, the Company’s income taxes, net income, cash flows, retained earnings, additional paid-in capital, and basic and diluted net income per common share for corresponding periods in 2016 have been restated due to the adoption of ASU No. 2016-09. In addition, the Company has adopted the following recently released accounting standards. Adoption of these standards did not have a material impact on the Company’s consolidated results of operations, cash flows, financial position or disclosures: Effective January 1, 2016, the Company adopted FASB ASU 2015-01 (Topic 225), Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items (“ASU 2015-01”). Such items are defined as transactions or events that are both unusual in nature and infrequent in occurrence, and, currently, are required to be presented separately in the income statement, net of income tax, after income from continuing operations. The changes eliminate the concept of an extraordinary item and, therefore, the presentation of such items will no longer be required. Notwithstanding this change, the Company will still be required to present and disclose a transaction or event that is both unusual in nature and infrequent in occurrence in the notes to the financial statements. Effective January 1, 2016, the Company adopted FASB ASU 2015-05 (Topic 350), Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement (“ASU 2015-05”), which provides explicit guidance to evaluate the accounting for fees paid by a customer in a cloud computing arrangement. The new guidance clarifies that if a cloud computing arrangement includes a software license, the customer should account for the license consistent with its accounting for other software licenses. If the arrangement does not include a software license, the customer should account for the arrangement as a service contract. Effective January 1, 2016, the Company adopted FASB ASU 2015-16 (Topic 805), Business Combinations (“ASU 2015-16”), which eliminates the requirement for an acquirer in a business combination to account for measurement-period adjustments retrospectively. The guidance requires that the acquirer shall recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. Effective January 1, 2016, the Company adopted FASB ASU 2015-02. In February 2015, the FASB issued ASU No. 2015-02, Amendment to the Consolidation Analysis, which specifies changes to the analysis that an entity must perform to determine whether it should consolidate certain types of legal entities. These changes (i) modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities or voting interest entities, (ii) eliminate the presumption that a general partner should consolidate a limited partnership, (iii) affect the consolidation analysis of reporting entities that are involved with variable interest entities, particularly those that have fee arrangements and related party relationships, and (iv) provide a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. Effective January 1, 2017, the Company adopted FASB ASU 2016-06, Derivatives and Hedging (Topic 815). The amendments in this update clarify the requirements for assessing whether contingent call (put) options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. An entity performing the assessment under the amendments in this update is required to assess the embedded call (put) options solely in accordance with a four-step decision sequence. 2. Summary of significant accounting policies (Continued) The following recently released accounting standards have not yet been adopted by the Company: In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which will replace most existing revenue recognition guidance in U.S. GAAP. The core principle of the ASU is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. The ASU requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments. Subsequently, the FASB issued ASU No. 2017-13, in September 2017, ASU No. 2016-08, “Principal versus Agent Considerations (Reporting Gross versus Net),” in March 2016, ASU No. 2016-10, “Identifying performance obligations and licensing,” in April 2016, and ASU 2016-20 “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers” in December 2016, which amend and clarify ASU 2014-09. These ASUs will be effective for the Company beginning January 1, 2018, including interim periods in the fiscal year 2018, and allow for both retrospective and prospective adoption. The Company has performed an initial assessment of the impact of the ASU and developed a transition plan, including necessary changes to policies, processes, and internal controls as well as system enhancements to generate the information necessary for the new disclosures. The implementation plan is on schedule for adoption on January 1, 2018 and the Company will apply the cumulative effect method as its transition approach. The Company expects revenue recognition across the portfolio of services to remain largely unchanged, however there would be an impact on the timing of recognition of certain contract costs, which would now be amortized over the contract period as against being previously expensed off. Based on the analysis completed to date, the Company does not currently expect that the ASU will have a material impact on consolidated revenue in its Consolidated Financial Statements. Company’s preliminary assessments are subject to change. In February 2016, the FASB issued ASU No. 2016-02, “Leases.” The core principle of the ASU is that a lessee should recognize the assets and liabilities that arise from its leases other than those that meet the definition of a short-term lease. The ASU requires extensive qualitative and quantitative disclosures, including with respect to significant judgments made by management. Subsequently, the FASB issued ASU No. 2017-13, in September 2017, which amends and clarifies ASU 2016-02. The ASU will be effective for the Company beginning January 1, 2019, including interim periods in the fiscal year 2019. Early adoption is permitted. The Company is in the process of determining the method of adoption and assessing the impact of this ASU on its consolidated results of operations, cash flows, financial position and disclosures. In October 2016, the FASB issued ASU 2016-16, “Intra-Entity Transfers of Assets Other Than Inventory.” The new guidance eliminates the exception for deferment of tax recognition until the transferred asset is sold to a third party or otherwise recovered through use for all intra-entity sales of assets other than inventory. The ASU is effective for the Company beginning January 1, 2018, including interim periods in the fiscal year 2018. Early adoption is permitted. The Company does not expect the adoption of this update to have a material impact on its consolidated results of operations, cash flows, financial position or disclosures. In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business.” The new guidance revises the definition of a business. The definition of a business affects many areas of accounting (e.g., acquisitions, disposals, goodwill impairment, consolidation). The ASU is effective for the Company beginning January 1, 2018, including interim periods in the fiscal year 2018. Early adoption is permitted. The Company is in the process of assessing the impact of this ASU on its consolidated results of operations, cash flows, financial position and disclosures. In March 2017, the FASB issued ASU 2017-07, “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” The ASU requires entities to (1) disaggregate the current-service-cost component from the other components of net benefit cost (the “other components”) and present it with other current compensation costs for related employees in the income statement and (2) present the other components elsewhere in the income statement and outside of income from operations if that subtotal is presented. In addition, the ASU requires entities to disclose the income statement lines that contain the other components if they are not presented on appropriately described separate lines. The ASU is effective for the Company beginning January 1, 2018, including interim periods in the fiscal year 2018. The Company is in the process of assessing the impact of this ASU on its consolidated results of operations, cash flows, financial position and disclosures. 2. Summary of significant accounting policies (Continued) In August 2017, the FASB issued ASU 2017-12, “Derivatives and Hedging.” The amendment expands an entity’s ability to hedge accounting to non-financial and financial risk components and requires changes in fair value of hedging instruments to be presented in the same income statement line as the hedged item. The ASU also amends the presentation and disclosure requirements for the effect of hedge accounting. The ASU must be adopted using a modified retrospective approach with a cumulative effect adjustment recorded to the opening balance of retained earnings as of the initial application date. The ASU is effective for the Company beginning January 1, 2019, including interim periods in the fiscal year 2019. Early adoption is permitted. The Company is in the process of assessing the impact of this ASU on its consolidated results of operations, cash flows, financial position and disclosures. ( 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

Business acquisitions	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Business acquisitions	3. Business acquisitions Certain acquisitions (a) TandemSeven, Inc. On September 5, 2017, the Company acquired 100% of the outstanding equity interest in TandemSeven, Inc. (“TandemSeven”), a Massachusetts corporation, for estimated total purchase consideration of $35,720, subject to adjustment for closing date working capital and indebtedness. This amount includes cash consideration of $31,866, net of cash acquired of $3,854, and a preliminary adjustment for working capital and indebtedness. In addition, the Company is evaluating certain tax positions, which, when determined, may result in the recognition of additional assets and liabilities as of the acquisition date. The measurement period will not exceed one year from the acquisition date. In connection with the acquisition of TandemSeven, the Company recorded $2,000 in customer-related intangibles, $1,700 in marketing-related intangibles and $800 in technology-related intangible assets, which have a weighted average amortization period of two years. Goodwill arising from the acquisition amounted to $25,298, which has been allocated to the Company’s India reporting unit and is deductible for tax purposes. The goodwill represents primarily the acquired design expertise, operating synergies and other benefits expected to result from combining the acquired operations with those of the Company. Acquisition-related costs of $932 have been included in selling, general and administrative expenses as incurred. In connection with the transaction, the Company also acquired certain assets with a value of $7,388 and assumed certain liabilities amounting to $1,206. The Company also recognized a net deferred tax liability of $260. The results of operations of the acquired business and the fair value of the acquired assets and assumed liabilities are included in the Company’s consolidated financial statements with effect from the date of the acquisition. (b) OnSource, LLC On July 18, 2017, the Company acquired 100% of the outstanding equity interest in OnSource, LLC (“OnSource”), a Massachusetts limited liability company, for estimated total purchase consideration of $22,996, subject to adjustment for closing date working capital, indebtedness and certain transaction expenses incurred by OnSource in connection with closing. This amount includes cash consideration of $22,959, net of cash acquired of $37, and a preliminary adjustment for working capital and net debt. The total consideration paid by the Company to the sellers is $23,043, resulting in a receivable of $47, which is outstanding as of September 30, 2017. This acquisition brings digital capabilities to the Company’s insurance service offerings. 3. Business acquisitions (Continued) In connection with the acquisition of OnSource, the Company recorded $794 in customer-related intangibles, $936 in marketing-related intangibles and $1,150 in technology-related intangibles, which have a weighted average amortization period of four years. Goodwill arising from the acquisition amounted to $19,729, which has been allocated to the Company’s India reporting unit and is deductible for tax purposes. The goodwill represents primarily the capabilities, operating synergies and other benefits expected to result from combining the acquired operations with those of the Company. Acquisition-related costs of $1,334 have been included in selling, general and administrative expenses as incurred. In connection with the transaction, the Company also acquired certain assets with a value of $1,180 and assumed certain liabilities amounting to $793. The results of operations of the acquired business and the fair value of the acquired assets and assumed liabilities are included in the Company’s consolidated financial statements with effect from the date of the acquisition. (c) IT business of Birlasoft In connection with the transaction, the Company recorded $8,600 in customer-related intangibles, which have a weighted average amortization period of three years. Goodwill arising from the acquisition amounted to $9,671, which has been allocated to the Company’s IT services reporting unit and is deductible for tax purposes. The goodwill represents primarily the capabilities, operating synergies and other benefits expected to result from combining the acquired operations with those of the Company. Acquisition-related costs of $97 have been included in selling, general and administrative expenses as incurred. Through this transaction, the Company has acquired assets with a value of $1,381 and assumed liabilities amounting to $3,343. The results of operations of the acquired business and the fair value of the acquired assets and assumed liabilities are included in the Company’s consolidated financial statements with effect from the date of the acquisition. (d) Image processing business of Fiserv Solutions of Australia Pty Ltd. On May 11, 2017, the Company acquired the image processing business of Fiserv Solutions of Australia Pty Limited for estimated total purchase consideration of $18,990, subject to adjustment for closing date working capital, value transfer and net debt. This amount includes a preliminary adjustment for closing date working capital, value transfer and net debt. As of September 30, 2017, the total consideration paid by the Company to the sellers is $21,301, resulting in a receivable of $2,311. This acquisition strengthens the Company’s financial services portfolio and expands its Australia footprint. In connection with the transaction, the Company recorded $17,400 in customer-related intangibles, $1,806 in technology-related intangibles and $100 in other intangibles, which have a weighted average amortization period of six years. Goodwill arising from the acquisition amounted to $5,416, which has been allocated to the Company’s India reporting unit and is not deductible for tax purposes. The goodwill represents primarily the capabilities, operating synergies and other benefits expected to result from combining the acquired operations with those of the Company. Acquisition-related costs of $385 have been included in selling, general and administrative expenses as incurred. Through this transaction, the Company has acquired assets with a value of $5,144, assumed liabilities amounting to $5,625, and recognized a net deferred tax liability of $5,250. The results of operations of the acquired business and the fair value of the acquired assets and assumed liabilities are included in the Company’s consolidated financial statements with effect from the date of the acquisition. 3. Business acquisitions (Continued) (e) BrightClaim LLC and associated companies On May 3, 2017, the Company acquired 100% of the outstanding equity interest in each of BrightClaim LLC, a Delaware limited liability company, BrightServe LLC, a Georgia limited liability company, National Vendor LLC, a Delaware limited liability company, and BrightClaim Blocker, Inc., a Delaware corporation (collectively referred to as “BrightClaim”) for total purchase consideration of $56,461, subject to adjustment for closing date working capital, indebtedness and In connection with the acquisition of BrightClaim, the Company recorded $8,000 in customer-related intangibles, $3,200 in marketing-related intangibles, $2,200 in technology-related intangibles and $200 in other intangibles, which have a weighted average amortization period of four years. Goodwill arising from the acquisition amounted to $42,638, which has been allocated to the Company’s India reporting unit and is partially deductible for tax purposes. The goodwill represents primarily the capabilities, operating synergies and other benefits expected to result from combining the acquired operations with those of the Company. Acquisition-related costs of $1,563 have been included in selling, general and administrative expenses as incurred. In connection with the transaction, the Company also acquired certain assets with a value of $10,367, assumed certain liabilities amounting to $7,415, and recognized a net deferred tax liability of $2,728. The results of operations of the acquired business and the fair value of the acquired assets and assumed liabilities are included in the Company’s consolidated financial statements with effect from the date of the acquisition. (f) RAGE Frameworks, Inc. On April 13, 2017, the Company acquired 100% of the outstanding equity interest in RAGE Frameworks, Inc. (“RAGE”), a Delaware corporation, for estimated total consideration of $125,089, subject to adjustment for closing date working capital and indebtedness. This amount includes cash consideration of $124,149, net of cash acquired of $1,605, and a preliminary adjustment for working capital and indebtedness. In addition, the Company is evaluating certain tax positions which, when determined, may result in the recognition of additional assets and liabilities as of the acquisition date. The measurement period will not exceed one year from the acquisition date. In connection with the acquisition of RAGE, the Company recorded $1,600 in customer-related intangibles, $600 in marketing-related intangibles, $12,400 in technology-related intangible assets and $100 in other intangible assets, which have a weighted average amortization period of seven years. Goodwill arising from the acquisition amounted to $105,114, which has been allocated to the Company’s India reporting unit and is not deductible for tax purposes. The goodwill represents primarily the acquired digital and artificial intelligence capabilities, operating synergies and other benefits expected to result from combining the acquired operations with those of the Company. Acquisition-related costs of $881 have been included in selling, general and administrative expenses as incurred. In connection with the transaction, the Company also acquired certain assets with a value of $13,836 and assumed certain liabilities amounting to $9,654. The Company also recognized a net deferred tax asset of $1,094. The results of operations of the acquired business and the fair value of the acquired assets and assumed liabilities are included in the Company’s consolidated financial statements with effect from the date of the acquisition. 3. Business acquisitions (Continued) (g) LeaseDimensions, Inc. On February 15, 2017, the Company acquired 100% of the outstanding equity interest in LeaseDimensions, Inc. (“LeaseDimensions”), an Oregon corporation, for estimated total consideration of $11,626, subject to adjustment for closing date working capital and net debt. This amount includes the estimated fair value of contingent earn-out consideration, cash consideration of $9,089, net of cash acquired of $217, and a preliminary adjustment for working capital and net debt. The total consideration paid by the Company to the sellers was $9,454, resulting in a receivable of $148, which is outstanding as of September 30, 2017. The purchase agreement also provides for contingent earn-out consideration ranging from $0 to $3,000, payable by the Company to the sellers based on the future performance of the business relative to the thresholds specified in the earn-out calculation. This acquisition enhances the Company’s capabilities in commercial lending and leasing. In connection with the transaction, the Company recorded $2,400 in customer-related intangibles and $1,000 in marketing-related intangibles, which have a weighted average amortization period of three years. Goodwill arising from the acquisition amounted to $8,307, which has been allocated to the Company’s Americas reporting unit and is not deductible for tax purposes. The goodwill represents primarily the capabilities, operating synergies and other benefits expected to result from combining the acquired operations with those of the Company. Acquisition-related costs of $422 have been included in selling, general and administrative expenses as incurred. Through this transaction, the Company acquired assets with a value of $2,277, assumed liabilities amounting to $1,038, and recognized a net deferred tax liability of $1,320. The results of operations of the acquired business and the fair value of the acquired assets and assumed liabilities are included in the Company’s consolidated financial statements with effect from the date of the acquisition. (h) Endeavour Software Technologies Private Limited On April 13, 2016, the Company acquired 100% of the outstanding equity interest in Endeavour Software Technologies Private Limited (“Endeavour”), an Indian private limited company, for total consideration of $14,788. This amount includes the estimated fair value of the contingent earn-out consideration, cash consideration of $10,345, net of cash acquired of $2,373, and an adjustment for working capital and net debt. Of this amount, $101 was paid by the Company to one of the sellers during the quarter ended September 30, 2017. During the quarter ended March 31, 2017, the Company recorded a measurement period adjustment that resulted in a $346 increase in the purchase consideration as a result of an adjustment to closing date working capital and net debt. The adjustments included an increase of $161 in assets acquired, a decrease of $118 in liabilities assumed and a corresponding impact on goodwill of $67. These measurement period adjustments did not have a significant impact on the Company’s consolidated statements of income, balance sheets or cash flows. This acquisition enhances the Company’s digital capabilities by adding critical end-to-end mobility services. In connection with the transaction, the Company recorded $800 in customer-related intangibles, $900 in marketing-related intangibles and $950 in other intangible assets, which have a weighted average amortization period of three years. Goodwill arising from the acquisition amounted to $8,936, which has been allocated to the Company’s India reporting unit and is not deductible for tax purposes. The goodwill represents primarily the capabilities in end-to-end mobility services, operating synergies and other benefits expected to result from combining the acquired operations with those of the Company. In connection with the transaction, the Company also acquired certain assets with a value of $5,854 and assumed certain liabilities amounting to $1,735. (i) On January 8, 2016, the Company acquired 51% of the outstanding equity interest in Strategic Sourcing Excellence LLC (“SSE”), a Delaware limited liability company. The total consideration paid by the Company to the selling equity holders for the acquired interest in SSE was $14,541. This amount includes the fair value of earn-out consideration, cash consideration of $2,550, and an adjustment for working capital, transaction expenses and indebtedness. During the quarter ended December 31, 2016, the Company recorded a measurement period adjustment that resulted in a $51 increase in the purchase consideration through the recognition of $69 in current assets and $16 in non-current assets, with a corresponding impact on goodwill of $34. These measurement period adjustments did not have a significant impact on the Company’s consolidated statements of income, balance sheets or cash flows in any period. The equity purchase agreement between the Company and the selling equity holders of SSE also provides for contingent earn-out consideration of up to $20,000, payable by the Company to the selling equity holders based on the future performance of the acquired business relative to the thresholds specified in the earn-out calculation. Up to $9,800 of the total potential earn-out consideration, representing the selling equity holders’ 49% interest in SSE, is payable only if either the put or call option, each as described below, is exercised. 3. Business acquisitions (Continued) The equity purchase agreement grants the Company a call option to purchase the remaining 49% equity interest in SSE, which option the Company has the right to exercise between January 1, 2018 and January 31, 2018. If the Company does not exercise its call option during such period, the selling equity holders have the right to exercise a put option between March 1, 2018 and April 30, 2018 to require the Company to purchase their 49% interest in SSE at a price ranging from $2,450 to $2,950. This acquisition enhances the Company’s sourcing and procurement consulting domain expertise. Acquisition-related costs of $164 have been included in selling, general and administrative expenses as incurred. Through this transaction, the Company acquired assets with a value of $412 and assumed liabilities amounting to $617. The results of operations of the acquired business, the fair value of the acquired assets and assumed liabilities, and redeemable non-controlling interest are included in the Company’s Consolidated Financial Statements with effect from the date of the acquisition. In connection with the transaction, the Company recorded $300 in customer-related intangible assets with an amortization period of five years. Goodwill arising from the acquisition amounted to $14,445, which has been allocated to the Company’s India reporting unit and is deductible for tax purposes. The goodwill represents future economic benefits the Company expects to derive from its expanded presence in the sourcing and procurement consulting domains, operating synergies and other anticipated benefits of combining the acquired operations with those of the Company.

Cash and cash equivalents

Cash and cash equivalents	9 Months Ended
	Sep. 30, 2017
Cash And Cash Equivalents [Abstract]
Cash and cash equivalents	4. Cash and cash equivalents Cash and cash equivalents as of December 31, 2016 and September 30, 2017 are set out in the table below: As of December 31, As of September 30, 2016 2017 Cash and other bank balances 422,623 440,055 Total $ 422,623 $ 440,055

Accounts receivable, net of res

Accounts receivable, net of reserve for doubtful receivables	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Accounts receivable, net of reserve for doubtful receivables	5. Accounts receivable, net of reserve for doubtful receivables The following table provides details of the Company’s reserve for doubtful receivables: Year ended Nine months ended December 31, 2016 September 30, Opening balance as of January 1 $ 11,530 $ 15,519 Additions due to acquisitions - 235 Additions charged to cost and expense 7,282 4,871 Deductions/effect of exchange rate fluctuations (3,293 ) (49 ) Closing balance $ 15,519 $ 20,576 Accounts receivable were $630,784 and $691,268, and the reserves for doubtful receivables were $15,519 and $20,576, resulting in net accounts receivable balances of $615,265 and $670,692, as of December 31, 2016 and September 30, 2017, respectively. In addition, accounts receivable due after one year of $3,272 and $1,880 as of December 31, 2016 and September 30, 2017, respectively, are included under other assets in the Consolidated Balance Sheets. Accounts receivable from related parties were $2,490 and $42 as of December 31, 2016 and September 30, 2017, respectively. There are no reserves for doubtful receivables in respect of amounts due from related parties.

Fair value measurements

Fair value measurements	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
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 financial assets and liabilities were determined using the following inputs as of December 31, 2016 and September 30, 2017: As of December 31, 2016 Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Other Unobservable Inputs Total (Level 1) (Level 2) (Level 3) Assets Derivative instruments (Note a, c) $ 55,386 $ — $ 55,386 $ — Total $ 55,386 $ — $ 55,386 $ — Liabilities Earn-out consideration (Note b, d) $ 22,435 $ — $ — $ 22,435 Derivative instruments (Note b, c) $ 17,353 $ — $ 17,353 $ — Total $ 39,788 $ — $ 17,353 $ 22,435 Redeemable non-controlling interest (Note e) $ 4,520 $ — $ — $ 4,520 6. Fair value measurements (Continued) As of September 30, 2017 Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Other Unobservable Inputs Total (Level 1) (Level 2) (Level 3) Assets Derivative instruments (Note a, c) $ 55,080 $ — $ 55,080 $ — Total $ 55,080 $ — $ 55,080 $ — Liabilities Earn-out consideration (Note b, d) $ 17,999 $ — — $ 17,999 Derivative instruments (Note b, c) $ 27,763 $ — $ 27,763 $ — Total $ 45,762 $ — $ 27,763 $ 17,999 Redeemable non-controlling interest (Note e) $ 3,839 $ — $ — $ 3,839 (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. (c) The Company values its derivative instruments based on market observable inputs, including both forward and spot prices for the relevant currencies and interest rate indices for relevant interest rates. The quotes are taken from an independent market database. (d) The fair value of earn-out consideration, calculated as the present value of expected future payments to be made to the sellers of acquired businesses, was derived by estimating the future financial performance of the acquired businesses using the earn-out formula and performance targets specified in each purchase agreement and adjusting the result to reflect the Company’s estimate of the likelihood of achievement of such targets. Given the significance of the unobservable inputs, the valuations are classified in level 3 of the fair value hierarchy. (e) The Company’s estimate of the fair value of redeemable non-controlling interest is based on unobservable inputs considering the assumptions that market participants would make in pricing the obligation. Given the significance of the unobservable inputs, the valuation is classified in level 3 of the fair value hierarchy. See Note 3—Business Acquisitions. The following table provides a roll-forward of the fair value of earn-out consideration categorized as level 3 in the fair value hierarchy for the three and nine months ended September 30, 2016 and 2017: Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Opening balance $ 18,438 $ 23,274 $ 22,820 $ 22,435 Earn-out consideration payable in connection with acquisitions 4,360 - 14,550 2,320 Payments of earn-out consideration (357 ) (5,756 ) (1,509 ) (7,239 ) Changes in fair value of earn-out consideration (note a) - 11 (14,997 ) (1,414 ) Others (note b) 545 470 2,122 1,897 Ending balance $ 22,986 $ 17,999 $ 22,986 $ 17,999 (a) Changes in the fair value of earn-out consideration are reported in other operating (income) expense, net in the consolidated statements of income. (b) Interest expense is included in interest income (expense), net and the impact of changes in foreign exchange is reported in foreign exchange gains (losses), net in the consolidated statements of income. The cumulative translation adjustment is reported as a component of other comprehensive income (loss).

Derivative financial instrument

Derivative financial instruments	9 Months Ended
	Sep. 30, 2017
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative financial instruments	7. Derivative financial instruments The Company is exposed to the risk of rate fluctuations on its foreign currency assets and liabilities and on 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, foreign currency denominated forecasted cash flows and interest rate risk. These derivative financial instruments are largely deliverable and non-deliverable forward foreign exchange contracts and interest rate swaps. The Company enters into these contracts with counterparties that are banks or other financial institutions, and the Company considers the risk of non-performance by such counterparties not to be material. The forward foreign exchange contracts and interest rate swaps mature during a period of up to 51 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 (note a) Balance sheet exposure asset (liability) (note b) As of December 31, 2016 As of September 30, 2017 As of December 31, 2016 As of September 30, 2017 Foreign exchange forward contracts denominated in: United States dollars (sell) Indian rupees (buy) $ 1,108,400 $ 1,274,026 $ 6,669 $ 30,464 United States dollars (sell) Mexican peso (buy) 9,120 2,280 (187 ) 362 United States dollars (sell) Philippines peso (buy) 70,050 66,800 (1,036 ) (1,635 ) Euro (sell) United States dollars (buy) 138,613 161,783 9,180 (1,760 ) Pound sterling (buy) United States dollars (sell) - 16,077 - 40 Euro (sell) Romanian leu (buy) 29,805 36,662 (152 ) (481 ) Japanese yen (sell) Chinese renminbi (buy) 77,267 71,832 (742 ) 306 Pound sterling (sell) United States dollars (buy) 104,142 94,728 14,228 (605 ) Australian dollars (sell) United States dollars (buy) 114,412 145,679 2,328 (5,934 ) Interest rate swaps (floating to fixed) 456,810 438,290 7,746 6,560 38,034 27,317 (a) Notional amounts are key elements of derivative financial instrument agreements but do not represent the amount exchanged by counterparties and do not measure the Company’s exposure to credit or market risks. However, the amounts exchanged are based on the notional amounts and other provisions of the underlying derivative financial instrument agreements. (b) Balance sheet exposure is denominated in U.S. dollars and denotes the mark-to-market impact of the derivative financial instruments on the reporting date. FASB guidance on derivatives and hedging requires companies to recognize all derivative instruments as either assets or liabilities at fair value in the balance sheet. In accordance with the FASB guidance on derivatives and hedging, the Company designates foreign exchange forward contracts and interest rate swaps as cash flow hedges. Foreign exchange forward contracts are entered into to cover the effects of future exchange rate variability on forecasted revenues and purchases of services, and interest rate swaps are entered into to cover interest rate fluctuation risk. In addition to this program, the Company uses derivative instruments that are not accounted for as hedges under the FASB guidance in order to hedge foreign exchange risks related to balance sheet items, such as receivables and intercompany borrowings, that are denominated in currencies other than the Company’s underlying functional currency. 7. Derivative financial instruments (Continued) The fair value of the Company’s derivative instruments and their location in the Company’s financial statements are summarized in the table below: Cash flow hedges Non-designated As of December 31, 2016 As of September 30, 2017 As of December 31, 2016 As of September 30, 2017 Assets Prepaid expenses and other current assets $ 33,921 $ 33,345 $ 809 $ 883 Other assets $ 20,657 $ 20,852 $ — $ — Liabilities Accrued expenses and other current liabilities $ 4,540 $ 12,005 $ 237 $ 2,522 Other liabilities $ 12,576 $ 13,236 $ — $ — Cash flow hedges For derivative instruments that are designated and qualify as cash flow hedges, the effective portion of the gain (loss) on the derivative instrument is reported as a component of other comprehensive income (loss) and reclassified into earnings in the same period or periods during which the hedged transaction is recognized in the consolidated statements of income. Gains (losses) on the derivatives, representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness, are recognized in earnings as incurred. In connection with cash flow hedges, the gains (losses) recorded as a component of other comprehensive income (loss), or OCI, and the related tax effects are summarized below: Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Before-tax amount Tax (expense) or benefit Net of tax amount Before-tax amount Tax (expense) or benefit Net of tax amount Before-tax amount Tax (expense) or benefit Net of tax amount Before-tax amount Tax (expense) or benefit Net of tax amount Opening balance $ (30,790 ) $ 8,945 $ (21,845 ) $ 52,167 $ (19,438 ) $ 32,729 $ (30,090 ) $ 9,830 $ (20,260 ) $ 37,461 $ (13,979 ) $ 23,482 Net gains (losses) reclassified into statement of income on completion of hedged transactions (1,584 ) 11 (1,573 ) 15,451 (5,716 ) 9,735 (7,071 ) 1,300 (5,771 ) 40,251 (14,815 ) 25,436 Changes in fair value of effective portion of outstanding derivatives, net 29,005 (10,806 ) 18,199 (7,760 ) 2,621 (5,139 ) 22,818 (10,402 ) 12,416 31,746 (11,937 ) 19,809 Gain (loss) on cash flow hedging derivatives, net 30,589 (10,817 ) 19,772 (23,211 ) 8,337 (14,874 ) 29,889 (11,702 ) 18,187 (8,505 ) 2,878 (5,627 ) Closing balance $ (201 ) $ (1,872 ) $ (2,073 ) $ 28,956 $ (11,101 ) $ 17,855 $ (201 ) $ (1,872 ) $ (2,073 ) $ 28,956 $ (11,101 ) $ 17,855 7. Derivative financial instruments (Continued) The gains or losses recognized in other comprehensive income (loss) and their effects on financial performance are summarized below: Amount of gain (loss) Amount of gain (loss) recognized in OCI on reclassified from OCI into Derivatives in derivatives (effective portion) Location of gain (loss) reclassified statement of income (effective portion) Cash Flow Three months ended Nine months ended from OCI into Three months ended Nine months ended Hedging September 30, September 30, statement of income September 30, September 30, Relationships 2016 2017 2016 2017 (effective portion) 2016 2017 2016 2017 Forward foreign exchange contracts $ 28,287 $ (7,779 ) $ 26,612 $ 33,132 Revenue $ 2,599 $ 403 $ 8,596 $ 6,429 Interest rate swaps 718 19 (3,794 ) (1,386 ) Cost of revenue (2,823 ) 11,666 (11,540 ) 26,655 Selling, general and administrative expenses (693 ) 3,213 (3,073 ) 7,368 Interest expense (667 ) 169 (1,054 ) (201 ) $ 29,005 $ (7,760 ) $ 22,818 $ 31,746 $ (1,584 ) $ 15,451 $ (7,071 ) $ 40,251 Gain (loss) recognized in income on the ineffective portion of derivatives and the amount excluded from effectiveness testing is $0 for the three and nine months ended September 30, 2016 and 2017, respectively. Non-designated Hedges Amount of gain (loss) recognized in statement of income on derivatives Derivatives not designated as hedging Location of gain (loss) recognized in statement of Three months ended September 30, Nine months ended September 30, instruments income on derivatives 2016 2017 2016 2017 Forward foreign exchange contracts (Note a) Foreign exchange gains (losses), net $ 2,599 $ (1,350 ) $ 2,838 $ 8,763 $ 2,599 $ (1,350 ) $ 2,838 $ 8,763 (a) These forward foreign exchange contracts were entered into to hedge fluctuations in foreign exchange rates for recognized balance sheet items such as receivables and intercompany borrowings, and were not originally designated as hedges under FASB guidance on derivatives and hedging. Realized gains (losses) and changes in the fair value of these derivatives are recorded in foreign exchange gains (losses), net in the consolidated statements of income.

Prepaid expenses and other curr

Prepaid expenses and other current assets	9 Months Ended
	Sep. 30, 2017
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Prepaid expenses and other current assets	8. Prepaid expenses and other current assets Prepaid expenses and other current assets consist of the following: As of December 31, As of September 30, 2016 2017 Advance income and non-income taxes $ 50,676 $ 96,175 Deferred transition costs 45,252 50,561 Derivative instruments 34,730 34,229 Prepaid expenses 22,222 21,290 Customer acquisition cost 11,126 15,707 Employee advances 6,880 5,069 Deposits 2,688 2,855 Advances to suppliers 10,059 2,569 Others 5,516 15,412 $ 189,149 $ 243,867

Property, plant and equipment,

Property, plant and equipment, net	9 Months Ended
	Sep. 30, 2017
Property Plant And Equipment [Abstract]
Property, plant and equipment, net	9. Property, plant and equipment, net Property, plant and equipment, net consist of the following: As of December 31, As of September 30, 2016 2017 Property, plant and equipment, gross $ 600,554 $ 653,523 Less: Accumulated depreciation and amortization (407,336 ) (447,900 ) Property, plant and equipment, net $ 193,218 $ 205,623 Depreciation expense on property, plant and equipment for the nine months ended September 30, 2016 and 2017 was $33,990 and $32,692, respectively, and for the three months ended September 30, 2016 and 2017 was $11,334 and $11,479, respectively. Computer software amortization for the nine months ended September 30, 2016 and 2017 amounted to $6,990 and $8,368, respectively, and for the three months ended September 30, 2016 and 2017 was $2,182 and $2,963, respectively. The depreciation and amortization expenses set forth above include the effect of the reclassification of foreign exchange (gains) losses related to the effective portion of foreign currency derivative contracts, amounting to $614 and $(1,211) for the nine months ended September 30, 2016 and 2017, respectively, and $147 and $(517) for the three months ended September 30, 2016 and 2017, respectively.

Goodwill and intangible assets

Goodwill and intangible assets	9 Months Ended
	Sep. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and intangible assets	10. Goodwill and intangible assets The following table presents the changes in goodwill for the year ended December 31, 2016 and nine months ended September 30, 2017: As of December 31, As of September 30, 2016 2017 Opening balance $ 1,038,346 $ 1,069,408 Goodwill relating to acquisitions consummated during the Period 51,535 216,108 Goodwill relating to divestitures consummated during the period (2,226 ) - Impact of measurement period adjustments (59 ) 131 Effect of exchange rate fluctuations (18,188 ) 29,665 Closing balance $ 1,069,408 $ 1,315,312 10. Goodwill and intangible assets (Continued) The total amount of goodwill deductible for tax purposes was $39,032 and $109,268 as of December 31, 2016 and September 30, 2017, respectively. The Company’s intangible assets are as follows: As of December 31, 2016 As of September 30, 2017 Gross Accumulated amortization & impairment Net Gross carrying amount Accumulated amortization & impairment Net Customer-related intangible assets $ 312,041 $ 260,018 $ 52,023 $ 362,496 $ 283,459 $ 79,037 Marketing-related intangible assets 45,098 30,571 14,527 52,275 36,355 15,920 Technology-related intangible assets 26,116 21,026 5,090 51,487 26,438 25,049 Other intangible assets 2,875 2,466 409 3,062 1,956 1,106 Intangible assets under development 6,897 - 6,897 17,103 - 17,103 $ 393,027 $ 314,081 $ 78,946 $ 486,423 $ 348,208 $ 138,215 Amortization expenses for intangible assets disclosed in the consolidated statements of income under amortization of intangible assets for the nine months ended September 30, 2016 and 2017 were $19,764 and $25,780, respectively, and for the three months ended September 30, 2016 and 2017 were $7,126 and $10,151, respectively. During the nine months ended September 30, 2016, the Company tested an intangible software asset for recoverability as a result of a downward revision to the forecasted cash flows to be generated by the intangible asset. The Company previously recorded a charge to this asset in the third quarter of 2015. Based on the results of its testing, the Company determined that the carrying value of the intangible asset exceeded the estimated undiscounted cash flows by $10,324 and recorded an additional charge to further reduce the carrying value by this amount. Of this charge, $5,381 was recorded during the three months ended September 30, 2016. The Company used a combination of the income and cost approaches to determine the fair value of the intangible asset for the purpose of calculating the charge. This charge has been recorded in other operating (income) expenses, net in the consolidated statement of income .

Short-term borrowings

Short-term borrowings	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Short-term borrowings	11. Short-term borrowings The Company has the following borrowing facilities: (a) Fund-based and non-fund-based credit facilities with banks, which are available for operational requirements in the form of overdrafts, letters of credit, guarantees and short-term loans. As of December 31, 2016 and September 30, 2017, the limits available were $15,382 and $14,698, respectively, of which $10,980 and $7,395 was utilized, constituting non-funded drawdown. (b) A fund-based and non-fund based revolving credit facility of $350,000, which the Company obtained in June 2015 as described in note 12. This facility replaced the Company’s $250,000 facility initially entered into in August 2012 and subsequently amended in June 2013. As of both December 31, 2016 and September 30, 2017, a total of $160,978 was utilized, of which $160,000 constituted funded drawdown and $978 constituted non-funded drawdown. The revolving facility expires in June 2020. The funded drawdown amount bore interest at a rate equal to LIBOR plus a margin of 1.50% per annum as of December 31, 2016 and September 30, 2017. The unutilized amount on the revolving facility bore a commitment fee of 0.25% as of December 31, 2016 and September 30, 2017. The credit agreement contains certain customary covenants, including a maximum leverage covenant and a minimum interest coverage ratio. During the nine months ended September 30, 2017, the Company was in compliance with the financial covenants.

Long-term debt

Long-term debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Long-term debt	12. Long-term debt In June 2015, the Company refinanced its 2012 credit facility through a new credit facility comprised of an $800,000 term loan and a $350,000 revolving credit facility. Borrowings under the new facility bear interest at a rate equal to, at the election of the Company, either LIBOR plus an applicable margin equal to 1.50% per annum or a base rate plus an applicable margin equal to 0.50% per annum, in each case subject to adjustment based on the Company’s debt ratings provided by Standard & Poor’s Rating Services and Moody’s Investors Service, Inc. Based on the Company’s election and current credit rating, the applicable interest rate is equal to LIBOR plus 1.50% per annum. As a result of the June 2015 refinancing, the gross outstanding term loan under the previous facility, which amounted to $663,188 as of June 30, 2015, was extinguished, and the Company expensed $10,050, representing accelerated amortization of the existing unamortized debt issuance costs related to the prior facility. Additionally, the refinancing of the revolving facility resulted in the accelerated amortization of $65 relating to the existing unamortized debt issuance cost. The remaining unamortized costs for the revolving facility, together with the fees paid to the Company’s lenders and third parties in connection with the new term loan and revolving facility, will be amortized over the term of the refinanced facility, which ends on June 30, 2020. During the nine months ended September 30, 2017, the Company was in compliance with the financial covenants of the credit agreement. As of December 31, 2016 and September 30, 2017, the amount outstanding under the term loan, net of debt amortization expense of $2,667 and $2,051, was $737,333 and $707,967, respectively. As of December 31, 2016 and September 30, 2017, the term loan bore interest at a rate equal to LIBOR plus a margin of 1.50% per annum based on the Company’s election and current credit rating. Indebtedness under the refinanced facility is unsecured. The amount outstanding on the term loan as of September 30, 2017 will be repaid through quarterly payments of $10,000, and the balance will be repaid upon the maturity of the term loan on June 30, 2020. The maturity profile of the term loan, net of debt amortization expense, is as follows: Year ended Amount 2017 $ 9,815 2018 39,226 2019 39,272 2020 619,654 Total $ 707,967 In March 2017, the Company issued $350,000 aggregate principal amount of 3.70% senior notes in a private offering, resulting in cash proceeds of approximately $348,519, net of an underwriting fee of $1,481. In connection with the offering, the Company incurred other debt issuance costs of $1,161. The total debt issuance cost of $2,642 is being amortized over the life of the notes as additional interest expense. As of September 30, 2017, the amount outstanding under the notes, net of debt amortization expense of $2,372, was $347,628, which is payable on April 1, 2022. The Company will pay interest on the notes semi-annually in arrears on April 1 and October 1 of each year, ending on the maturity date of April 1, 2022. The Company, at its option, may redeem the notes at any time in whole or in part, at a redemption price equal to (i) 100% of the principal amount of the notes redeemed, together with accrued and unpaid interest on the redeemed amount, and (ii) if the notes are redeemed prior to March 1, 2022, a specified “make-whole” premium. The notes are subject to certain customary covenants, including limitations on the ability of the Company and certain of its subsidiaries to incur debt secured by liens, engage in certain sale and leaseback transactions and consolidate, merge, convey or transfer their assets. Upon certain change of control transactions, the Company will be required to make an offer to repurchase the notes at a price equal to 101% of the aggregate principal amount of such notes, plus accrued and unpaid interest. The interest rate payable on the notes is subject to adjustment if the credit rating of the notes is downgraded up to a maximum increase of 2.0%. The Company is required to offer to exchange the notes for registered notes or have one or more shelf registration statements declared effective within 455 days after the issue date of the notes and, if such exchange offer fails to be consummated or such registration statement fails to be effective by June 25, 2018, then the interest payable on the notes will increase by 0.25% per annum during the 90-day period immediately following such date and will further increase by 0.25% per annum at the end of each subsequent 90-day period up to a maximum increase of 0.50%.

Accrued expenses and other curr

Accrued expenses and other current liabilities	9 Months Ended
	Sep. 30, 2017
Payables And Accruals [Abstract]
Accrued expenses and other current liabilities	13. Accrued expenses and other current liabilities Accrued expenses and other current liabilities consist of the following: As of December 31, As of September 30, 2016 2017 Accrued expenses $ 163,400 $ 183,261 Accrued employee cost 179,360 182,211 Deferred transition revenue 50,552 47,317 Statutory liabilities 36,878 44,125 Retirement benefits 17,616 19,810 Derivative instruments 4,777 14,527 Advance from customers 21,969 27,678 Earn-out consideration 6,885 6,687 Other liabilities 15,461 13,607 Capital lease obligations 1,349 1,520 $ 498,247 $ 540,743

Other liabilities

Other liabilities	9 Months Ended
	Sep. 30, 2017
Other Liabilities Disclosure [Abstract]
Other liabilities	14. Other liabilities Other liabilities consist of the following: As of December 31, As of September 30, 2016 2017 Accrued employee cost $ 3,976 $ 16,234 Deferred transition revenue 72,560 74,860 Retirement benefits 39,020 45,243 Derivative instruments 12,576 13,236 Amount received from GE under indemnification arrangement, pending adjustment 3,159 3,294 Advance from customers 2,371 232 Earn-out consideration 15,550 11,312 Others 11,078 17,803 Capital lease obligations 2,500 2,751 $ 162,790 $ 184,965

Employee benefit plans

Employee benefit plans	9 Months Ended
	Sep. 30, 2017
Compensation And Retirement Disclosure [Abstract]
Employee benefit plans	15. 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 maintains a defined benefit retirement plan covering substantially all of its Indian employees. In accordance with Mexican law, the Company provides termination benefits to all of its Mexican employees. In addition, certain of the Company’s subsidiaries in the Philippines and Japan sponsor defined benefit retirement programs. Net defined benefit plan costs for the three and nine months ended September 30, 2016 and 2017 include the following components: Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Service costs $ 1,207 $ 1,814 $ 4,040 $ 5,391 Interest costs 559 776 1,870 2,303 Amortization of actuarial loss 34 221 15 653 Expected return on plan assets (469 ) (529 ) (1,449 ) (1,560 ) Net defined benefit plan costs $ 1,331 $ 2,282 $ 4,476 $ 6,787 Defined contribution plans During the three and nine months ended September 30, 2016 and 2017, the Company contributed the following amounts to defined contribution plans in various jurisdictions: Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 India $ 4,843 $ 5,731 $ 13,877 $ 16,514 U.S. 2,216 2,228 7,951 9,148 U.K. 1,596 1,887 5,177 5,961 China 4,158 4,132 11,555 11,700 Other regions 1,158 1,006 3,507 3,083 Total $ 13,971 $ 14,984 $ 42,067 $ 46,405

Stock-based compensation

Stock-based compensation	9 Months Ended
	Sep. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-based compensation	16. Stock-based compensation The Company has issued options under the Genpact Global Holdings 2005 Plan (the “2005 Plan”), the Genpact Global Holdings 2006 Plan (the “2006 Plan”), the Genpact Global Holdings 2007 Plan (the “2007 Plan”) and the 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. With respect to options granted under the 2005, 2006 and 2007 Plans before the date of adoption of the 2007 Omnibus Plan, if an award granted under any such plan was forfeited or otherwise expired, terminated, or cancelled without the delivery of shares, then the shares covered by the forfeited, expired, terminated, or cancelled award were added to the number of shares otherwise available for grant under the respective plans. Under the 2007 Omnibus Plan, share-based awards forfeited, expired, terminated, or cancelled under any of the plans were 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 May 9, 2017, the Company’s shareholders approved the adoption of the Genpact Limited 2017 Omnibus Incentive Compensation Plan (the “2017 Omnibus Plan”), pursuant to which 15,000,000 Company common shares are available for issuance. No further grants may be made under the 2007 Omnibus Plan after the date of adoption of the 2017 Omnibus Plan. Stock-based compensation costs relating to the foregoing plans during the nine months ended September 30, 2016 and 2017 were $18,046 and $21,985, respectively, and for the three months ended September 30, 2016 and 2017 were $4,718 and $9,907, respectively. These costs have been allocated to cost of revenue and selling, general, and administrative expenses. Stock options Options granted are subject to a vesting requirement. Options granted under the plans to date are exercisable into common shares of the Company, have a contractual period of ten years and vest over four to five years unless specified otherwise in the applicable award agreement. The Company recognizes the compensation cost over the vesting period of the option. Compensation cost is determined as of the date of grant by estimating the fair value of an option using the Black-Scholes option-pricing model. The following table shows the significant assumptions used in connection with the determination of the fair value of options granted in the nine months ended September 30, 2016 and September 30, 2017. Nine September Nine September Dividend yield — 0.97% Expected life (in months) 84 84 Risk-free rate of interest 1.42%-1.56% 2.25% Volatility 25.60%-27.22% 24.28% 16. Stock-based compensation (Continued) A summary of stock option activity during the nine months ended September 30, 2017 is set out below: Nine months ended September 30, 2017 Shares out of options Weighted exercise price Weighted remaining contractual (years) Aggregate intrinsic value Outstanding as of January 1, 2017 5,707,690 $ 18.65 5.8 $ — Granted 250,000 24.74 — — Forfeited (80,000 ) 20.63 — — Expired — — — — Exercised (641,900 ) 14.40 — 8,707 Outstanding as of September 30, 2017 5,235,790 $ 19.44 5.8 $ 48,770 Vested as of September 30, 2017 and expected to vest thereafter (Note a) 5,036,756 $ 19.22 5.8 $ 47,981 Vested and exercisable as of September 30, 2017 2,304,291 $ 16.12 4.3 $ 29,095 Weighted average grant date fair value of grants during the period $ 6.62 (a) Options expected to vest reflect an estimated forfeiture rate. As of September 30, 2017, the total remaining unrecognized stock-based compensation cost for options expected to vest amounted to $8,182, which will be recognized over the weighted average remaining requisite vesting period of 2.7 years. Restricted share units The Company has granted restricted share units, or RSUs, under the 2007 and 2017 Omnibus Plans. Each RSU represents the right to receive one Company common share at a future date. The fair value of each RSU is typically the closing market price of a Company common share on the date of the grant. RSUs granted to date have graded vesting schedules of three months to four years. The compensation expense is recognized on a straight-line basis over the vesting term. A summary of RSUs granted during the nine months ended September 30, 2017 is set out below: Nine months ended September 30, 2017 Number Weighted Outstanding as of January 1, 2017 117,905 $ 20.65 Granted 1,518,565 26.30 Vested (Note a) (45,248 ) 18.31 Forfeited (1,242) 25.53 Outstanding as of September 30, 2017 1,589,980 $ 26.11 Expected to vest (Note b) 1,324,508 (a) RSUs that vested during the period were net settled upon vesting by issuing 32,395 shares (net of minimum statutory tax withholding). (b) The number of RSUs expected to vest reflects an estimated forfeiture rate. 53,546 RSUs vested in the year ended December 31, 2015, in respect of which 53,023 shares were issued during the nine months ended September 30, 2017 after withholding shares to the extent of minimum statutory withholding taxes. 34,035 RSUs vested in the year ended December 31, 2016, in respect of which 17,802 shares were issued during the nine months ended September 30, 2017 after withholding shares to the extent of minimum statutory withholding taxes. 16. Stock-based compensation (Continued) As of September 30, 2017, the total remaining unrecognized stock-based compensation cost related to RSUs amounted to $29,339, which will be recognized over the weighted average remaining requisite vesting period of 3.1 years. Performance units The Company also grants stock awards in the form of performance units, or PUs, and has granted PUs under both the 2007 and 2017 Omnibus Plans. Each PU represents the right to receive one Company common share at a future date based on the Company’s performance against specified targets. PUs granted to date have vesting schedules of six months to three years. The fair value of each PU is the closing market price of one common share of the Company on the date of grant and assumes that performance targets will be achieved. PUs granted under the Company’s plans to date are subject to cliff vesting. The compensation expense for such awards is recognized on a straight-line basis over the vesting terms. Over the performance period, the number of shares to be issued is adjusted upward or downward depending on the probability of achievement of the performance targets. The ultimate number of shares issued and the related compensation cost recognized is based on a comparison of the final performance metrics to the specified targets. A summary of PU activity during the nine months ended September 30, 2017 is set out below: Nine months ended September 30, 2017 Number Performance Weighted Average Date Maximum Eligible Outstanding as of January 1, 2017 3,772,128 $ 23.04 5,524,114 Granted 1,811,292 25.22 3,622,584 Vested (Note a) (1,136,047) 16.78 (1,136,047) Forfeited (Note b) (1,557,067 ) 27.62 (1,580,267 ) Adjustment upon final determination of level of performance goal achievement (Note c) (1,747,586) Outstanding as of September 30, 2017 2,890,306 $ 24.40 4,682,798 Expected to vest (Note d) 2,248,990 (a) PUs that vested during the period were net settled upon vesting by issuing 731,701 shares (net of minimum statutory tax withholding). (b) Includes 1,443,624 target shares underlying PUs granted in 2016 which were forfeited for failure to achieve all of the threshold performance targets under such awards as certified by the compensation committee based on the Company’s audited financial statements for the year ended December 31, 2016. (c) Represents the difference between the maximum number of shares achievable under the PUs granted in 2016 and the number of target shares underlying the PUs granted in 2016, which were forfeited for failure to achieve all of the threshold performance targets under such awards as certified by the compensation committee based on the Company’s audited financial statements for the year ended December 31, 2016. (d) The number of PUs expected to vest is based on the probable achievement of the performance targets after considering an estimated forfeiture rate. As of September 30, 2017, the total remaining unrecognized stock-based compensation cost related to PUs amounted to $27,746, which will be recognized over the weighted average remaining requisite vesting period of 2.1 years. 16. Stock-based compensation (Continued) Employee Stock Purchase Plan (ESPP) On May 1, 2008, the Company adopted the Genpact Limited U.S. Employee Stock Purchase Plan and the Genpact Limited International Employee Stock Purchase Plan (together, the “ESPP”). The ESPP allows eligible employees to purchase the Company’s common shares through payroll deductions at 90% of the closing price of the Company’s common shares on the last business day of each purchase interval. The dollar amount of common shares purchased under the ESPP must not exceed 15% of the participating employee’s base salary, subject to a cap of $25 per employee per calendar year. With effect from September 1, 2009, the offering periods commence on the first business day in March, June, September and December of each year and end on the last business day of the subsequent May, August, November and February. 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, 2016 and 2017, 105,856 and 150,265 common shares, respectively, were issued under the ESPP. 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, 2016 and 2017 was $298 and $417, respectively, and for the three months ended September 30, 2016 and 2017 was $110 and $144, respectively, and has been allocated to cost of revenue and selling, general, and administrative expenses.

Capital stock

Capital stock	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Capital stock	17. Capital stock Share repurchases As of December 31, 2016, the Company’s board of directors (the “Board”) had authorized the Company to repurchase up to $750,000 in value of the Company’s common shares under its share repurchase program first announced in February 2015. On February 10, 2017 the Board approved up to an additional $500,000 in share repurchases, bringing the total authorization under the Company’s existing program to $1,250,000. The Company’s share repurchase program does not obligate it to acquire any specific number of shares. Under the program, shares may be purchased in privately negotiated and/or open market transactions, including under plans complying with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended. On March 29, 2017, the Company entered into an accelerated share repurchase (“ASR”) agreement with Morgan Stanley & Co. LLC (the “Dealer”) to repurchase Company common shares for an aggregate purchase price of $200,000. The Company paid the aggregate purchase price to the Dealer and received an initial delivery of 6,578,947 common shares at a price of $24.32 per share. The purchase price was recorded as a reduction in shareholders’ equity through a $160,000 decrease in retained earnings and a $40,000 decrease in additional paid-in capital. The final settlement of the transaction under the ASR agreement, which was initially expected to be completed by the end of the fourth quarter of 2017, is now expected to be completed in January 2018 pursuant to an amendment to the ASR agreement. The final number of common shares to be repurchased by the Company under the ASR agreement will be based on the volume-weighted average share price of the Company’s common shares during the term of the applicable transaction, less a discount and subject to adjustments pursuant to the terms of the ASR agreement. At settlement, under certain circumstances, the Company may be entitled to receive additional common shares from the Dealer or may be required either to deliver its common shares or to make a cash payment to the Dealer. The ASR agreement contains customary provisions, including, among other things, with respect to mechanisms to determine the number of shares or the amount of cash that will be delivered at settlement, the required timing of delivery upon settlement, specific circumstances under which adjustments may be made to the repurchase transaction, and specific circumstances under which the repurchase transaction may be canceled prior to the scheduled maturity. During the nine months ended September 30, 2016, the Company purchased 9,615,323 of its common shares on the open market at a weighted average price of $25.23 per share for an aggregate cash amount of $242,552. During the nine months ended September 30, 2017, the Company made payments in an aggregate cash amount of $219,784 toward share repurchases. Of this amount, the Company paid (i) $19,784 to repurchase 808,293 of its common shares on the open market at a weighted average price of $24.48 per share, (ii) $160,000 to the Dealer for the initial delivery of 6,578,947 of its common shares under the ASR agreement at a weighted average price of $24.32 per share, and (iii) $40,000 to the Dealer for shares to be delivered at the final settlement of the transaction under the ASR agreement as described above. All repurchased shares have been retired. The Company records repurchases of its common shares on the settlement date of each transaction. Shares purchased and retired are deducted to the extent of their par value from common stock and from retained earnings for the excess over par value. Direct costs incurred to acquire the shares are included in the total cost of the shares purchased. For the nine months ended September 30, 2016 and September 30, 2017, $192 and $16, respectively, was deducted from retained earnings in direct costs related to share repurchases. Dividend In February 2017, the Company’s board of directors approved a dividend program under which the Company intends to pay a regular quarterly cash dividend of $0.06 per share to holders of its common shares, representing a planned annual dividend of $0.24 per share. On March 28, 2017, June 28, 2017 and September 21, 2017, the Company paid dividends of $0.06 per share, amounting to $11,957, $11,558 and $11,581 in the aggregate, to shareholders of record as of March 10, 2017, June 12, 2017 and September 8, 2017 respectively.

Earnings per share

Earnings per share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings per share	18. 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 Company common shares outstanding. The calculation of basic earnings per common share is determined by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the respective periods. Potentially dilutive shares, consisting of outstanding options on common shares, restricted share units, performance units and common shares to be issued under the employee stock purchase plan, have been included in the computation of diluted net earnings per share and the weighted average shares outstanding, except where the result would be anti-dilutive. The number of stock awards outstanding but not included in the computation of diluted earnings per common share because their effect was anti-dilutive is 698,286 and 1,122,559 for the nine months ended September 30, 2016 and 2017, respectively, and 947,778 and 1,113,307 for the three months ended September 30, 2016 and 2017, respectively. Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Net income available to Genpact Limited common shareholders $ 68,922 $ 73,745 $ 193,385 $ 196,029 Weighted average number of common shares used in computing basic earnings per common share 206,146,007 192,124,366 209,034,741 194,221,162 Dilutive effect of stock-based awards 3,230,676 2,823,333 3,322,853 2,890,852 Weighted average number of common shares used in computing dilutive earnings per common share 209,376,683 194,947,699 212,357,594 197,112,014 Earnings per common share attributable to Genpact Limited common shareholders Basic $ 0.33 $ 0.38 $ 0.93 $ 1.01 Diluted $ 0.33 $ 0.38 $ 0.91 $ 0.99

Cost of revenue

Cost of revenue	9 Months Ended
	Sep. 30, 2017
Other Income And Expenses [Abstract]
Cost of revenue	19. Cost of revenue Cost of revenue consists of the following: Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Personnel expenses $ 269,771 $ 293,253 $ 788,768 $ 847,784 Operational expenses 111,443 123,995 325,938 346,300 Depreciation and amortization 11,218 11,943 34,329 33,737 $ 392,432 $ 429,191 $ 1,149,035 $ 1,227,821

Selling, general and administra

Selling, general and administrative expenses	9 Months Ended
	Sep. 30, 2017
Selling General And Administrative Expenses [Abstract]
Selling, general and administrative expenses	20. Selling, general and administrative expenses Selling, general and administrative expenses consist of the following: Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Personnel expenses $ 117,022 $ 126,612 $ 343,279 $ 371,867 Operational expenses 37,649 42,984 132,385 121,664 Depreciation and amortization 2,298 2,499 6,651 7,323 $ 156,969 $ 172,095 $ 482,315 $ 500,854

Other operating (income) expens

Other operating (income) expense, net	9 Months Ended
	Sep. 30, 2017
Other Income And Expenses [Abstract]
Other operating (income) expense, net	21. Other operating (income) expense, net Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Other operating (income) expense $ (249 ) $ (75 ) $ (990 ) $ (7,103 ) Provision for impairment of intangible assets 5,381 - 11,195 - Change in fair value of earn-out consideration and deferred consideration (relating to business acquisitions) - 11 (14,996 ) (1,414 ) Other operating (income) expense, net $ 5,132 $ (64 ) $ (4,791 ) $ (8,517 )

Interest income (expense), net

Interest income (expense), net	9 Months Ended
	Sep. 30, 2017
Banking And Thrift Interest [Abstract]
Interest income (expense), net	22. Interest income (expense), net Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Interest income $ 1,041 $ 2,549 $ 5,565 $ 4,543 Interest expense (5,942 ) (11,273 ) (16,737 ) (28,610 ) Interest income (expense), net $ (4,901 ) $ (8,724 ) $ (11,172 ) $ (24,067 )

Income taxes

Income taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income taxes	23. Income taxes The Company determines its tax provision for interim periods using an estimate of its annual effective tax rate adjusted for discrete items, if any, that are taken into account in the relevant period. Each quarter, the Company updates its estimate of the annual effective tax rate, and if its estimated tax rate changes, the Company makes a cumulative adjustment. As of December 31, 2016, the Company had unrecognized tax benefits amounting to $23,467, including an amount of $22,469, which, if recognized, would impact the effective tax rate. The following table summarizes activities related to the Company’s unrecognized tax benefits for uncertain tax positions from January 1, 2017 to September 30, 2017: 2017 Opening balance at January 1 $ 23,467 Increase related to prior year tax positions, including recorded in acquisition accounting 515 Decrease related to prior year tax positions (1,203 ) Decrease related to prior year tax positions due to lapse of applicable statute of limitation (663 ) Effect of exchange rate changes 853 Closing balance at September 30 $ 22,969 The Company’s unrecognized tax benefits as of September 30, 2017 include an amount of $21,964, which, if recognized, would impact the effective tax rate. As of December 31, 2016 and September 30, 2017, the Company had accrued approximately $3,856 and $4,266, respectively, for interest relating to unrecognized tax benefits. During the year ended December 31, 2016 and the nine months ended September 30, 2017, the company recognized approximately $(206) and 248, respectively, excluding the impact of exchange rate differences, in interest on unrecognized tax benefits. As of December 31, 2016 and September 30, 2017, the Company had accrued approximately $977 and $912, respectively, for penalties.

Related party transactions

Related party transactions	9 Months Ended
	Sep. 30, 2017
Related Party Transactions [Abstract]
Related party transactions	24. Related party transactions The Company has entered into related party transactions with its non-consolidating affiliates. The Company has also entered into related party transactions with a significant shareholder and its affiliates. The Company’s related party transactions can be categorized as follows: Revenue from services During the nine months ended September 30, 2016 and 2017, the Company recognized net revenues of $257 and $299, respectively, and during the three months ended September 30, 2016 and September 30, 2017, the Company recognized net revenues of $89 and $112, respectively, from a client that is a significant shareholder of the Company. During the nine months ended September 30, 2016 and 2017, the Company recognized net revenues of $5,109 and $5,400, respectively, and during the three months ended September 30, 2016, the Company recognized net revenues of $1,625, from a client that was a non-consolidating affiliate 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, 2016 and 2017, cost of revenue includes an amount of $1,675 and $1,245, respectively, and for the three months ended September 30, 2016 and 2017, cost of revenue includes an amount of $722 and $336, respectively, attributable to the cost of services provided by the Company’s non-consolidating affiliates. Selling, general and administrative expenses The Company purchases certain services from its non-consolidating affiliates, mainly relating to training and recruitment, the costs of which are included in selling, general and administrative expenses. For the nine months ended September 30, 2016 and 2017, selling, general and administrative expenses include an amount of $234 and $199, respectively, and for the three months ended September 30, 2016 and 2017, selling, general and administrative expenses include an amount of $107 and $51, respectively, attributable to the cost of services provided by the Company’s non-consolidating affiliates. During the three and nine months ended September 30, 2016 and 2017, the Company engaged a significant shareholder to provide certain services Investment in equity affiliates During the nine months ended September 30, 2017, the Company invested $496 in its non-consolidating affiliates. During the nine months ended September 30, 2017, the Company recorded a charge of $2,849 related to an investment in one of its non-consolidating affiliates. This charge has been included in equity-method investment activity, net in the Company’s consolidated statement of income. As of December 31, 2016 and September 30, 2017, the Company’s investments in its non-consolidating affiliates amounted to $4,800 and $833, respectively. Others During the nine months ended September 30, 2016 and 2017, the Company also entered into transactions with one of its non-consolidating affiliates for certain cost reimbursements amounting to $918 and $477, respectively. During the three months ended September 30, 2016, such cost reimbursements amounted to $244. 24. Related party transactions (Continued) During the nine months ended September 30, 2017, the Company made payments of $3,847 to one of its non-consolidating affiliates under a tax-sharing arrangement in the U.K. This amount represents a portion of the non-consolidated affiliate’s net operating losses surrendered to the Company under the tax sharing arrangement for the years 2015 and 2016. On June 30, 2017, this non-consolidating affiliate ceased to be a related party.

Commitments and contingencies

Commitments and contingencies	9 Months Ended
	Sep. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and contingencies	25. Commitments and contingencies Capital commitments As of December 31, 2016 and September 30, 2017, the Company has committed to spend $5,185 and $6,181, 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 $11,958 and $8,373 as of December 31, 2016 and September 30, 2017, respectively. Bank guarantees are generally provided to government agencies and excise and customs authorities for the purpose of maintaining a bonded warehouse. These guarantees may be revoked if the government agencies suffer any losses or damages through the breach of any of the covenants contained in the agreements governing such guarantees. Other commitments The Company’s business process delivery centers in India are 100% export oriented units or Software Technology Parks of India (“STPI”) units 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 accoun33

Summary of significant accounting policies (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
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, 2016. 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 interim periods are not necessarily indicative of results for the full year. The accompanying unaudited interim consolidated financial statements have been prepared on a consolidated basis and reflect the financial statements of Genpact Limited, a Bermuda company, and all of its subsidiaries that are more than 50% owned and controlled. When the Company does not have a controlling interest in an entity but exerts significant influence on the entity, the Company applies the equity method of accounting. All intercompany transactions and balances are eliminated in consolidation. Non-controlling interest in subsidiaries that is redeemable outside of the Company’s control for cash or other assets is reflected in the mezzanine section between liabilities and equity in the consolidated balance sheets at the redeemable value, which approximates fair value. Redeemable non-controlling interest is adjusted to its fair value at each balance sheet date. Any resulting increases or decreases in the estimated redemption amount are affected by corresponding changes to retained earnings. The share of non-controlling interest in subsidiary earnings is reflected in net loss (income) attributable to redeemable non-controlling interest in the 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, intangibles and goodwill, revenue recognition, reserves for doubtful receivables, valuation allowances for deferred tax assets, the valuation of derivative financial instruments, measurements of stock-based compensation, assets and obligations related to employee benefits, and income tax uncertainties and other contingencies. Management believes that the estimates used in the preparation of the consolidated financial statements are reasonable. Although these estimates are based upon management’s best knowledge of current events and actions, actual results could differ from these estimates. Any changes in estimates are adjusted prospectively in the Company’s consolidated financial statements.
Business combinations	2. Summary of significant accounting policies (Continued) (c) Business combinations, goodwill and other intangible assets The Company accounts for its business combinations using the acquisition method of accounting in accordance with ASC 805, Business Combinations, by recognizing the identifiable tangible and intangible assets acquired and liabilities assumed, and any non-controlling interest in the acquired business, measured at their acquisition date fair values. Contingent consideration is included within the acquisition cost and is recognized at its fair value on the acquisition date. A liability resulting from contingent consideration is remeasured to fair value as of each reporting date until the contingency is resolved. Changes in fair value are recognized in earnings. All assets and liabilities of the acquired businesses, including goodwill, are assigned to reporting units. Acquisition-related costs are expensed as incurred under Selling, General and Administrative Expenses. In business combinations where the fair value of identifiable tangible and intangible net assets purchased exceeds the cost of the acquired business, the Company recognizes the resulting gain under “Other operating (income) expense, net” in the Consolidated Statements of Income.
Goodwill	Goodwill represents the cost of acquired businesses in excess of the fair value of identifiable tangible and intangible net assets purchased. Goodwill is not amortized but is tested for impairment at least on an annual basis on December 31, based on a number of factors, including operating results, business plans and future cash flows. The Company performs an assessment of qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. Based on the assessment of events or circumstances, the Company performs a 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 a reporting unit exceeds the fair value of such goodwill, an impairment loss is recognized in an amount equal to the excess. In addition, the Company performs a 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 a reporting unit below its carrying amount. See Note 10 for information and related disclosures.
Other Intangible Assets	Intangible assets acquired individually or with a group of other assets or in a business combination and developed internally 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 Technology-related intangible assets 2-8 years Other intangible assets 2-9 years Intangible assets are amortized over their estimated useful lives using a method of amortization that reflects the pattern in which the economic benefits of the intangible assets are consumed or otherwise realized.
Financial instruments and concentration of credit risk	(d) Financial instruments and concentration of credit risk Financial instruments that potentially subject the Company to concentration of credit risk are reflected principally in cash and cash equivalents, 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 15% and 11% of receivables as of December 31, 2016 and September 30, 2017, respectively. GE accounted for 15% and 10% of total revenue for the nine months ended September 30, 2016 and 2017, respectively, and 17% and 10% of total revenue for the three months ended September 30, 2016 and 2017, respectively.
Recently issued accounting pronouncements	(e) Recently issued accounting pronouncements The authoritative bodies release standards and guidance which are assessed by management for impact on the Company’s consolidated financial statements. The Company has adopted the following recently released accounting standard: In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvement to Employee Share-Based Payment Accounting. The new standard contains several amendments that will simplify the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures, statutory tax withholding requirements, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The changes in the new standard eliminate the requirement for excess tax benefits to be recognized in additional paid-in capital and tax deficiencies recognized either in income tax expense or in additional paid-in capital. In the quarter ended December 31, 2016, the Company elected to early adopt ASU 2016-09 effective January 1, 2016 and will continue to apply ASU 2016-09 using a modified retrospective approach. The treatment of forfeitures has not changed as the Company is electing to continue its current process of estimating the number of forfeitures. With the early adoption of ASU 2016-09, the Company has elected to present the cash flow statement on a prospective transition method and no prior periods have been adjusted. As a result, the Company’s income taxes, net income, cash flows, retained earnings, additional paid-in capital, and basic and diluted net income per common share for corresponding periods in 2016 have been restated due to the adoption of ASU No. 2016-09. In addition, the Company has adopted the following recently released accounting standards. Adoption of these standards did not have a material impact on the Company’s consolidated results of operations, cash flows, financial position or disclosures: Effective January 1, 2016, the Company adopted FASB ASU 2015-01 (Topic 225), Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items (“ASU 2015-01”). Such items are defined as transactions or events that are both unusual in nature and infrequent in occurrence, and, currently, are required to be presented separately in the income statement, net of income tax, after income from continuing operations. The changes eliminate the concept of an extraordinary item and, therefore, the presentation of such items will no longer be required. Notwithstanding this change, the Company will still be required to present and disclose a transaction or event that is both unusual in nature and infrequent in occurrence in the notes to the financial statements. Effective January 1, 2016, the Company adopted FASB ASU 2015-05 (Topic 350), Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement (“ASU 2015-05”), which provides explicit guidance to evaluate the accounting for fees paid by a customer in a cloud computing arrangement. The new guidance clarifies that if a cloud computing arrangement includes a software license, the customer should account for the license consistent with its accounting for other software licenses. If the arrangement does not include a software license, the customer should account for the arrangement as a service contract. Effective January 1, 2016, the Company adopted FASB ASU 2015-16 (Topic 805), Business Combinations (“ASU 2015-16”), which eliminates the requirement for an acquirer in a business combination to account for measurement-period adjustments retrospectively. The guidance requires that the acquirer shall recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. Effective January 1, 2016, the Company adopted FASB ASU 2015-02. In February 2015, the FASB issued ASU No. 2015-02, Amendment to the Consolidation Analysis, which specifies changes to the analysis that an entity must perform to determine whether it should consolidate certain types of legal entities. These changes (i) modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities or voting interest entities, (ii) eliminate the presumption that a general partner should consolidate a limited partnership, (iii) affect the consolidation analysis of reporting entities that are involved with variable interest entities, particularly those that have fee arrangements and related party relationships, and (iv) provide a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. Effective January 1, 2017, the Company adopted FASB ASU 2016-06, Derivatives and Hedging (Topic 815). The amendments in this update clarify the requirements for assessing whether contingent call (put) options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. An entity performing the assessment under the amendments in this update is required to assess the embedded call (put) options solely in accordance with a four-step decision sequence. 2. Summary of significant accounting policies (Continued) The following recently released accounting standards have not yet been adopted by the Company: In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which will replace most existing revenue recognition guidance in U.S. GAAP. The core principle of the ASU is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. The ASU requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments. Subsequently, the FASB issued ASU No. 2017-13, in September 2017, ASU No. 2016-08, “Principal versus Agent Considerations (Reporting Gross versus Net),” in March 2016, ASU No. 2016-10, “Identifying performance obligations and licensing,” in April 2016, and ASU 2016-20 “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers” in December 2016, which amend and clarify ASU 2014-09. These ASUs will be effective for the Company beginning January 1, 2018, including interim periods in the fiscal year 2018, and allow for both retrospective and prospective adoption. The Company has performed an initial assessment of the impact of the ASU and developed a transition plan, including necessary changes to policies, processes, and internal controls as well as system enhancements to generate the information necessary for the new disclosures. The implementation plan is on schedule for adoption on January 1, 2018 and the Company will apply the cumulative effect method as its transition approach. The Company expects revenue recognition across the portfolio of services to remain largely unchanged, however there would be an impact on the timing of recognition of certain contract costs, which would now be amortized over the contract period as against being previously expensed off. Based on the analysis completed to date, the Company does not currently expect that the ASU will have a material impact on consolidated revenue in its Consolidated Financial Statements. Company’s preliminary assessments are subject to change. In February 2016, the FASB issued ASU No. 2016-02, “Leases.” The core principle of the ASU is that a lessee should recognize the assets and liabilities that arise from its leases other than those that meet the definition of a short-term lease. The ASU requires extensive qualitative and quantitative disclosures, including with respect to significant judgments made by management. Subsequently, the FASB issued ASU No. 2017-13, in September 2017, which amends and clarifies ASU 2016-02. The ASU will be effective for the Company beginning January 1, 2019, including interim periods in the fiscal year 2019. Early adoption is permitted. The Company is in the process of determining the method of adoption and assessing the impact of this ASU on its consolidated results of operations, cash flows, financial position and disclosures. In October 2016, the FASB issued ASU 2016-16, “Intra-Entity Transfers of Assets Other Than Inventory.” The new guidance eliminates the exception for deferment of tax recognition until the transferred asset is sold to a third party or otherwise recovered through use for all intra-entity sales of assets other than inventory. The ASU is effective for the Company beginning January 1, 2018, including interim periods in the fiscal year 2018. Early adoption is permitted. The Company does not expect the adoption of this update to have a material impact on its consolidated results of operations, cash flows, financial position or disclosures. In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business.” The new guidance revises the definition of a business. The definition of a business affects many areas of accounting (e.g., acquisitions, disposals, goodwill impairment, consolidation). The ASU is effective for the Company beginning January 1, 2018, including interim periods in the fiscal year 2018. Early adoption is permitted. The Company is in the process of assessing the impact of this ASU on its consolidated results of operations, cash flows, financial position and disclosures. In March 2017, the FASB issued ASU 2017-07, “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” The ASU requires entities to (1) disaggregate the current-service-cost component from the other components of net benefit cost (the “other components”) and present it with other current compensation costs for related employees in the income statement and (2) present the other components elsewhere in the income statement and outside of income from operations if that subtotal is presented. In addition, the ASU requires entities to disclose the income statement lines that contain the other components if they are not presented on appropriately described separate lines. The ASU is effective for the Company beginning January 1, 2018, including interim periods in the fiscal year 2018. The Company is in the process of assessing the impact of this ASU on its consolidated results of operations, cash flows, financial position and disclosures. 2. Summary of significant accounting policies (Continued) In August 2017, the FASB issued ASU 2017-12, “Derivatives and Hedging.” The amendment expands an entity’s ability to hedge accounting to non-financial and financial risk components and requires changes in fair value of hedging instruments to be presented in the same income statement line as the hedged item. The ASU also amends the presentation and disclosure requirements for the effect of hedge accounting. The ASU must be adopted using a modified retrospective approach with a cumulative effect adjustment recorded to the opening balance of retained earnings as of the initial application date. The ASU is effective for the Company beginning January 1, 2019, including interim periods in the fiscal year 2019. Early adoption is permitted. The Company is in the process of assessing the impact of this ASU on its consolidated results of operations, cash flows, financial position and disclosures.
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 accoun34

Summary of significant accounting policies (Tables)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Estimated Useful Lives of Intangible Assets Acquired	Intangible assets acquired individually or with a group of other assets or in a business combination and developed internally 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 Technology-related intangible assets 2-8 years Other intangible assets 2-9 years

Cash and cash equivalents (Tabl

Cash and cash equivalents (Tables)	9 Months Ended
	Sep. 30, 2017
Cash And Cash Equivalents [Abstract]
Cash And Cash Equivalents	Cash and cash equivalents as of December 31, 2016 and September 30, 2017 are set out in the table below: As of December 31, As of September 30, 2016 2017 Cash and other bank balances 422,623 440,055 Total $ 422,623 $ 440,055

Accounts receivable, net of r36

Accounts receivable, net of reserve for doubtful receivables (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Reserve for Doubtful Receivables	The following table provides details of the Company’s reserve for doubtful receivables: Year ended Nine months ended December 31, 2016 September 30, Opening balance as of January 1 $ 11,530 $ 15,519 Additions due to acquisitions - 235 Additions charged to cost and expense 7,282 4,871 Deductions/effect of exchange rate fluctuations (3,293 ) (49 ) Closing balance $ 15,519 $ 20,576

Fair value measurements (Tables

Fair value measurements (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
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 financial assets and liabilities were determined using the following inputs as of December 31, 2016 and September 30, 2017: As of December 31, 2016 Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Other Unobservable Inputs Total (Level 1) (Level 2) (Level 3) Assets Derivative instruments (Note a, c) $ 55,386 $ — $ 55,386 $ — Total $ 55,386 $ — $ 55,386 $ — Liabilities Earn-out consideration (Note b, d) $ 22,435 $ — $ — $ 22,435 Derivative instruments (Note b, c) $ 17,353 $ — $ 17,353 $ — Total $ 39,788 $ — $ 17,353 $ 22,435 Redeemable non-controlling interest (Note e) $ 4,520 $ — $ — $ 4,520 6. Fair value measurements (Continued) As of September 30, 2017 Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Other Unobservable Inputs Total (Level 1) (Level 2) (Level 3) Assets Derivative instruments (Note a, c) $ 55,080 $ — $ 55,080 $ — Total $ 55,080 $ — $ 55,080 $ — Liabilities Earn-out consideration (Note b, d) $ 17,999 $ — — $ 17,999 Derivative instruments (Note b, c) $ 27,763 $ — $ 27,763 $ — Total $ 45,762 $ — $ 27,763 $ 17,999 Redeemable non-controlling interest (Note e) $ 3,839 $ — $ — $ 3,839 (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. (c) The Company values its derivative instruments based on market observable inputs, including both forward and spot prices for the relevant currencies and interest rate indices for relevant interest rates. The quotes are taken from an independent market database. (d) The fair value of earn-out consideration, calculated as the present value of expected future payments to be made to the sellers of acquired businesses, was derived by estimating the future financial performance of the acquired businesses using the earn-out formula and performance targets specified in each purchase agreement and adjusting the result to reflect the Company’s estimate of the likelihood of achievement of such targets. Given the significance of the unobservable inputs, the valuations are classified in level 3 of the fair value hierarchy. (e) The Company’s estimate of the fair value of redeemable non-controlling interest is based on unobservable inputs considering the assumptions that market participants would make in pricing the obligation. Given the significance of the unobservable inputs, the valuation is classified in level 3 of the fair value hierarchy. See Note 3—Business Acquisitions.
Fair Value of Earn-out Consideration	The following table provides a roll-forward of the fair value of earn-out consideration categorized as level 3 in the fair value hierarchy for the three and nine months ended September 30, 2016 and 2017: Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Opening balance $ 18,438 $ 23,274 $ 22,820 $ 22,435 Earn-out consideration payable in connection with acquisitions 4,360 - 14,550 2,320 Payments of earn-out consideration (357 ) (5,756 ) (1,509 ) (7,239 ) Changes in fair value of earn-out consideration (note a) - 11 (14,997 ) (1,414 ) Others (note b) 545 470 2,122 1,897 Ending balance $ 22,986 $ 17,999 $ 22,986 $ 17,999 (a) Changes in the fair value of earn-out consideration are reported in other operating (income) expense, net in the consolidated statements of income. (b) Interest expense is included in interest income (expense), net and the impact of changes in foreign exchange is reported in foreign exchange gains (losses), net in the consolidated statements of income. The cumulative translation adjustment is reported as a component of other comprehensive income (loss).

Derivative financial instrume38

Derivative financial instruments (Tables)	9 Months Ended
	Sep. 30, 2017
Derivative Instruments And Hedging Activities Disclosure [Abstract]
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 (note a) Balance sheet exposure asset (liability) (note b) As of December 31, 2016 As of September 30, 2017 As of December 31, 2016 As of September 30, 2017 Foreign exchange forward contracts denominated in: United States dollars (sell) Indian rupees (buy) $ 1,108,400 $ 1,274,026 $ 6,669 $ 30,464 United States dollars (sell) Mexican peso (buy) 9,120 2,280 (187 ) 362 United States dollars (sell) Philippines peso (buy) 70,050 66,800 (1,036 ) (1,635 ) Euro (sell) United States dollars (buy) 138,613 161,783 9,180 (1,760 ) Pound sterling (buy) United States dollars (sell) - 16,077 - 40 Euro (sell) Romanian leu (buy) 29,805 36,662 (152 ) (481 ) Japanese yen (sell) Chinese renminbi (buy) 77,267 71,832 (742 ) 306 Pound sterling (sell) United States dollars (buy) 104,142 94,728 14,228 (605 ) Australian dollars (sell) United States dollars (buy) 114,412 145,679 2,328 (5,934 ) Interest rate swaps (floating to fixed) 456,810 438,290 7,746 6,560 38,034 27,317 (a) Notional amounts are key elements of derivative financial instrument agreements but do not represent the amount exchanged by counterparties and do not measure the Company’s exposure to credit or market risks. However, the amounts exchanged are based on the notional amounts and other provisions of the underlying derivative financial instrument agreements. (b) Balance sheet exposure is denominated in U.S. dollars and denotes the mark-to-market impact of the derivative financial instruments on the reporting date. FASB guidance on derivatives and hedging requires companies to recognize all derivative instruments as either assets or liabilities at fair value in the balance sheet. In accordance with the FASB guidance on derivatives and hedging, the Company designates foreign exchange forward contracts and interest rate swaps as cash flow hedges. Foreign exchange forward contracts are entered into to cover the effects of future exchange rate variability on forecasted revenues and purchases of services, and interest rate swaps are entered into to cover interest rate fluctuation risk. In addition to this program, the Company uses derivative instruments that are not accounted for as hedges under the FASB guidance in order to hedge foreign exchange risks related to balance sheet items, such as receivables and intercompany borrowings, that are denominated in currencies other than the Company’s underlying functional currency.
Fair Value of Derivative Instruments and Location in Financial Statements	7. Derivative financial instruments (Continued) The fair value of the Company’s derivative instruments and their location in the Company’s financial statements are summarized in the table below: Cash flow hedges Non-designated As of December 31, 2016 As of September 30, 2017 As of December 31, 2016 As of September 30, 2017 Assets Prepaid expenses and other current assets $ 33,921 $ 33,345 $ 809 $ 883 Other assets $ 20,657 $ 20,852 $ — $ — Liabilities Accrued expenses and other current liabilities $ 4,540 $ 12,005 $ 237 $ 2,522 Other liabilities $ 12,576 $ 13,236 $ — $ —
Cash Flow Hedges, Gains (Losses) Recorded as Component of Other Comprehensive Income (Loss) or Other Comprehensive Income	In connection with cash flow hedges, the gains (losses) recorded as a component of other comprehensive income (loss), or OCI, and the related tax effects are summarized below: Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Before-tax amount Tax (expense) or benefit Net of tax amount Before-tax amount Tax (expense) or benefit Net of tax amount Before-tax amount Tax (expense) or benefit Net of tax amount Before-tax amount Tax (expense) or benefit Net of tax amount Opening balance $ (30,790 ) $ 8,945 $ (21,845 ) $ 52,167 $ (19,438 ) $ 32,729 $ (30,090 ) $ 9,830 $ (20,260 ) $ 37,461 $ (13,979 ) $ 23,482 Net gains (losses) reclassified into statement of income on completion of hedged transactions (1,584 ) 11 (1,573 ) 15,451 (5,716 ) 9,735 (7,071 ) 1,300 (5,771 ) 40,251 (14,815 ) 25,436 Changes in fair value of effective portion of outstanding derivatives, net 29,005 (10,806 ) 18,199 (7,760 ) 2,621 (5,139 ) 22,818 (10,402 ) 12,416 31,746 (11,937 ) 19,809 Gain (loss) on cash flow hedging derivatives, net 30,589 (10,817 ) 19,772 (23,211 ) 8,337 (14,874 ) 29,889 (11,702 ) 18,187 (8,505 ) 2,878 (5,627 ) Closing balance $ (201 ) $ (1,872 ) $ (2,073 ) $ 28,956 $ (11,101 ) $ 17,855 $ (201 ) $ (1,872 ) $ (2,073 ) $ 28,956 $ (11,101 ) $ 17,855
Gains (Losses) Recorded as Component of Other Comprehensive Income (Loss) or Other Comprehensive Income	7. Derivative financial instruments (Continued) The gains or losses recognized in other comprehensive income (loss) and their effects on financial performance are summarized below: Amount of gain (loss) Amount of gain (loss) recognized in OCI on reclassified from OCI into Derivatives in derivatives (effective portion) Location of gain (loss) reclassified statement of income (effective portion) Cash Flow Three months ended Nine months ended from OCI into Three months ended Nine months ended Hedging September 30, September 30, statement of income September 30, September 30, Relationships 2016 2017 2016 2017 (effective portion) 2016 2017 2016 2017 Forward foreign exchange contracts $ 28,287 $ (7,779 ) $ 26,612 $ 33,132 Revenue $ 2,599 $ 403 $ 8,596 $ 6,429 Interest rate swaps 718 19 (3,794 ) (1,386 ) Cost of revenue (2,823 ) 11,666 (11,540 ) 26,655 Selling, general and administrative expenses (693 ) 3,213 (3,073 ) 7,368 Interest expense (667 ) 169 (1,054 ) (201 ) $ 29,005 $ (7,760 ) $ 22,818 $ 31,746 $ (1,584 ) $ 15,451 $ (7,071 ) $ 40,251 Gain (loss) recognized in income on the ineffective portion of derivatives and the amount excluded from effectiveness testing is $0 for the three and nine months ended September 30, 2016 and 2017, respectively. Non-designated Hedges Amount of gain (loss) recognized in statement of income on derivatives Derivatives not designated as hedging Location of gain (loss) recognized in statement of Three months ended September 30, Nine months ended September 30, instruments income on derivatives 2016 2017 2016 2017 Forward foreign exchange contracts (Note a) Foreign exchange gains (losses), net $ 2,599 $ (1,350 ) $ 2,838 $ 8,763 $ 2,599 $ (1,350 ) $ 2,838 $ 8,763 (a) These forward foreign exchange contracts were entered into to hedge fluctuations in foreign exchange rates for recognized balance sheet items such as receivables and intercompany borrowings, and were not originally designated as hedges under FASB guidance on derivatives and hedging. Realized gains (losses) and changes in the fair value of these derivatives are recorded in foreign exchange gains (losses), net in the consolidated statements of income.

Prepaid expenses and other cu39

Prepaid expenses and other current assets (Tables)	9 Months Ended
	Sep. 30, 2017
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets consist of the following: As of December 31, As of September 30, 2016 2017 Advance income and non-income taxes $ 50,676 $ 96,175 Deferred transition costs 45,252 50,561 Derivative instruments 34,730 34,229 Prepaid expenses 22,222 21,290 Customer acquisition cost 11,126 15,707 Employee advances 6,880 5,069 Deposits 2,688 2,855 Advances to suppliers 10,059 2,569 Others 5,516 15,412 $ 189,149 $ 243,867

Property, plant and equipment40

Property, plant and equipment, net (Tables)	9 Months Ended
	Sep. 30, 2017
Property Plant And Equipment [Abstract]
Property, plant and equipment, net	Property, plant and equipment, net consist of the following: As of December 31, As of September 30, 2016 2017 Property, plant and equipment, gross $ 600,554 $ 653,523 Less: Accumulated depreciation and amortization (407,336 ) (447,900 ) Property, plant and equipment, net $ 193,218 $ 205,623

Goodwill and intangible assets

Goodwill and intangible assets (Tables)	9 Months Ended
	Sep. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Changes in Goodwill	The following table presents the changes in goodwill for the year ended December 31, 2016 and nine months ended September 30, 2017: As of December 31, As of September 30, 2016 2017 Opening balance $ 1,038,346 $ 1,069,408 Goodwill relating to acquisitions consummated during the Period 51,535 216,108 Goodwill relating to divestitures consummated during the period (2,226 ) - Impact of measurement period adjustments (59 ) 131 Effect of exchange rate fluctuations (18,188 ) 29,665 Closing balance $ 1,069,408 $ 1,315,312
Summary of Intangible Assets	The Company’s intangible assets are as follows: As of December 31, 2016 As of September 30, 2017 Gross Accumulated amortization & impairment Net Gross carrying amount Accumulated amortization & impairment Net Customer-related intangible assets $ 312,041 $ 260,018 $ 52,023 $ 362,496 $ 283,459 $ 79,037 Marketing-related intangible assets 45,098 30,571 14,527 52,275 36,355 15,920 Technology-related intangible assets 26,116 21,026 5,090 51,487 26,438 25,049 Other intangible assets 2,875 2,466 409 3,062 1,956 1,106 Intangible assets under development 6,897 - 6,897 17,103 - 17,103 $ 393,027 $ 314,081 $ 78,946 $ 486,423 $ 348,208 $ 138,215

Long-term debt (Tables)

Long-term debt (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
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 2017 $ 9,815 2018 39,226 2019 39,272 2020 619,654 Total $ 707,967

Accrued expenses and other cu43

Accrued expenses and other current liabilities (Tables)	9 Months Ended
	Sep. 30, 2017
Payables And Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consist of the following: As of December 31, As of September 30, 2016 2017 Accrued expenses $ 163,400 $ 183,261 Accrued employee cost 179,360 182,211 Deferred transition revenue 50,552 47,317 Statutory liabilities 36,878 44,125 Retirement benefits 17,616 19,810 Derivative instruments 4,777 14,527 Advance from customers 21,969 27,678 Earn-out consideration 6,885 6,687 Other liabilities 15,461 13,607 Capital lease obligations 1,349 1,520 $ 498,247 $ 540,743

Other liabilities (Tables)

Other liabilities (Tables)	9 Months Ended
	Sep. 30, 2017
Other Liabilities Disclosure [Abstract]
Other liabilities	Other liabilities consist of the following: As of December 31, As of September 30, 2016 2017 Accrued employee cost $ 3,976 $ 16,234 Deferred transition revenue 72,560 74,860 Retirement benefits 39,020 45,243 Derivative instruments 12,576 13,236 Amount received from GE under indemnification arrangement, pending adjustment 3,159 3,294 Advance from customers 2,371 232 Earn-out consideration 15,550 11,312 Others 11,078 17,803 Capital lease obligations 2,500 2,751 $ 162,790 $ 184,965

Employee benefit plans (Tables)

Employee benefit plans (Tables)	9 Months Ended
	Sep. 30, 2017
Compensation And Retirement Disclosure [Abstract]
Net Defined Benefit Plan Costs	Net defined benefit plan costs for the three and nine months ended September 30, 2016 and 2017 include the following components: Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Service costs $ 1,207 $ 1,814 $ 4,040 $ 5,391 Interest costs 559 776 1,870 2,303 Amortization of actuarial loss 34 221 15 653 Expected return on plan assets (469 ) (529 ) (1,449 ) (1,560 ) Net defined benefit plan costs $ 1,331 $ 2,282 $ 4,476 $ 6,787
Amount Contributed to Defined Contribution Plans in Various Jurisdictions	During the three and nine months ended September 30, 2016 and 2017, the Company contributed the following amounts to defined contribution plans in various jurisdictions: Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 India $ 4,843 $ 5,731 $ 13,877 $ 16,514 U.S. 2,216 2,228 7,951 9,148 U.K. 1,596 1,887 5,177 5,961 China 4,158 4,132 11,555 11,700 Other regions 1,158 1,006 3,507 3,083 Total $ 13,971 $ 14,984 $ 42,067 $ 46,405

Stock-based compensation (Table

Stock-based compensation (Tables)	9 Months Ended
	Sep. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-based Payment Award, Stock Options Granted, Valuation Assumptions	The following table shows the significant assumptions used in connection with the determination of the fair value of options granted in the nine months ended September 30, 2016 and September 30, 2017. Nine September Nine September Dividend yield — 0.97% Expected life (in months) 84 84 Risk-free rate of interest 1.42%-1.56% 2.25% Volatility 25.60%-27.22% 24.28%
Summary of Stock Option Activity	A summary of stock option activity during the nine months ended September 30, 2017 is set out below: Nine months ended September 30, 2017 Shares out of options Weighted exercise price Weighted remaining contractual (years) Aggregate intrinsic value Outstanding as of January 1, 2017 5,707,690 $ 18.65 5.8 $ — Granted 250,000 24.74 — — Forfeited (80,000 ) 20.63 — — Expired — — — — Exercised (641,900 ) 14.40 — 8,707 Outstanding as of September 30, 2017 5,235,790 $ 19.44 5.8 $ 48,770 Vested as of September 30, 2017 and expected to vest thereafter (Note a) 5,036,756 $ 19.22 5.8 $ 47,981 Vested and exercisable as of September 30, 2017 2,304,291 $ 16.12 4.3 $ 29,095 Weighted average grant date fair value of grants during the period $ 6.62 (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, 2017 is set out below: Nine months ended September 30, 2017 Number Weighted Outstanding as of January 1, 2017 117,905 $ 20.65 Granted 1,518,565 26.30 Vested (Note a) (45,248 ) 18.31 Forfeited (1,242) 25.53 Outstanding as of September 30, 2017 1,589,980 $ 26.11 Expected to vest (Note b) 1,324,508 (a) RSUs that vested during the period were net settled upon vesting by issuing 32,395 shares (net of minimum statutory tax withholding). (b) The number of RSUs expected to vest reflects an estimated forfeiture rate.
Summary of Performance Units Activity	A summary of PU activity during the nine months ended September 30, 2017 is set out below: Nine months ended September 30, 2017 Number Performance Weighted Average Date Maximum Eligible Outstanding as of January 1, 2017 3,772,128 $ 23.04 5,524,114 Granted 1,811,292 25.22 3,622,584 Vested (Note a) (1,136,047) 16.78 (1,136,047) Forfeited (Note b) (1,557,067 ) 27.62 (1,580,267 ) Adjustment upon final determination of level of performance goal achievement (Note c) (1,747,586) Outstanding as of September 30, 2017 2,890,306 $ 24.40 4,682,798 Expected to vest (Note d) 2,248,990 (a) PUs that vested during the period were net settled upon vesting by issuing 731,701 shares (net of minimum statutory tax withholding). (b) Includes 1,443,624 target shares underlying PUs granted in 2016 which were forfeited for failure to achieve all of the threshold performance targets under such awards as certified by the compensation committee based on the Company’s audited financial statements for the year ended December 31, 2016. (c) Represents the difference between the maximum number of shares achievable under the PUs granted in 2016 and the number of target shares underlying the PUs granted in 2016, which were forfeited for failure to achieve all of the threshold performance targets under such awards as certified by the compensation committee based on the Company’s audited financial statements for the year ended December 31, 2016. (d) The number of PUs expected to vest is based on the probable achievement of the performance targets after considering an estimated forfeiture rate.

Earnings per share (Tables)

Earnings per share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per share	Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Net income available to Genpact Limited common shareholders $ 68,922 $ 73,745 $ 193,385 $ 196,029 Weighted average number of common shares used in computing basic earnings per common share 206,146,007 192,124,366 209,034,741 194,221,162 Dilutive effect of stock-based awards 3,230,676 2,823,333 3,322,853 2,890,852 Weighted average number of common shares used in computing dilutive earnings per common share 209,376,683 194,947,699 212,357,594 197,112,014 Earnings per common share attributable to Genpact Limited common shareholders Basic $ 0.33 $ 0.38 $ 0.93 $ 1.01 Diluted $ 0.33 $ 0.38 $ 0.91 $ 0.99

Cost of revenue (Tables)

Cost of revenue (Tables)	9 Months Ended
	Sep. 30, 2017
Other Income And Expenses [Abstract]
Cost of revenue	Cost of revenue consists of the following: Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Personnel expenses $ 269,771 $ 293,253 $ 788,768 $ 847,784 Operational expenses 111,443 123,995 325,938 346,300 Depreciation and amortization 11,218 11,943 34,329 33,737 $ 392,432 $ 429,191 $ 1,149,035 $ 1,227,821

Selling, general and administ49

Selling, general and administrative expenses (Tables)	9 Months Ended
	Sep. 30, 2017
Selling General And Administrative Expenses [Abstract]
Selling, General and Administrative Expenses	Selling, general and administrative expenses consist of the following: Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Personnel expenses $ 117,022 $ 126,612 $ 343,279 $ 371,867 Operational expenses 37,649 42,984 132,385 121,664 Depreciation and amortization 2,298 2,499 6,651 7,323 $ 156,969 $ 172,095 $ 482,315 $ 500,854

Other operating (income) expe50

Other operating (income) expense, net (Tables)	9 Months Ended
	Sep. 30, 2017
Other Income And Expenses [Abstract]
Other Operating (Income) Expense, Net	Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Other operating (income) expense $ (249 ) $ (75 ) $ (990 ) $ (7,103 ) Provision for impairment of intangible assets 5,381 - 11,195 - Change in fair value of earn-out consideration and deferred consideration (relating to business acquisitions) - 11 (14,996 ) (1,414 ) Other operating (income) expense, net $ 5,132 $ (64 ) $ (4,791 ) $ (8,517 )

Interest income (expense), net

Interest income (expense), net (Tables)	9 Months Ended
	Sep. 30, 2017
Banking And Thrift Interest [Abstract]
Interest Income (Expense), Net	Three months ended September 30, Nine months ended September 30, 2016 2017 2016 2017 Interest income $ 1,041 $ 2,549 $ 5,565 $ 4,543 Interest expense (5,942 ) (11,273 ) (16,737 ) (28,610 ) Interest income (expense), net $ (4,901 ) $ (8,724 ) $ (11,172 ) $ (24,067 )

Income taxes (Tables)

Income taxes (Tables)	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Activities Related to Unrecognized Tax Benefits for Uncertain Tax Positions	The following table summarizes activities related to the Company’s unrecognized tax benefits for uncertain tax positions from January 1, 2017 to September 30, 2017: 2017 Opening balance at January 1 $ 23,467 Increase related to prior year tax positions, including recorded in acquisition accounting 515 Decrease related to prior year tax positions (1,203 ) Decrease related to prior year tax positions due to lapse of applicable statute of limitation (663 ) Effect of exchange rate changes 853 Closing balance at September 30 $ 22,969

Organization - Additional Infor

Organization - Additional Information (Detail) $ in Thousands	Aug. 18, 2017USD ($)shares	Sep. 30, 2017EmployeeCountry	Oct. 25, 2012shares
Organization [Line Items]
Number of employees around the globe, minimum | Employee		77,000
Number of countries in which entity operates | Country		20
Common stock shares purchased by affiliates of Bain Capital Partners			67,750,678
Underwritten Public Offering
Organization [Line Items]
Common shares sold in underwritten public offering, shares	10,000,000
Common shares sold in underwritten public offering, value | $	$ 0

Estimated Useful Lives of Intan

Estimated Useful Lives of Intangible Assets Acquired (Detail)	9 Months Ended
	Sep. 30, 2017
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
Technology-related intangible assets | Minimum
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	2 years
Technology-related intangible assets | Maximum
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	8 years
Other Intangible Assets | Minimum
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	2 years
Other Intangible Assets | Maximum
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	9 years

Summary of Significant Accoun55

Summary of Significant Accounting Policies - Additional Information (Detail) - General Electric Company	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Schedule Of Significant Accounting Policies [Line Items]
Percentage of accounts receivables	11.00%		11.00%		15.00%
Percentage of total revenue	10.00%	17.00%	10.00%	15.00%

Business Acquisitions - Additio

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

Sep. 30, 2017

Sep. 05, 2017

Jul. 18, 2017

May 11, 2017

May 03, 2017

Apr. 13, 2017

Feb. 15, 2017

Apr. 13, 2016

Jan. 08, 2016

Apr. 30, 2018

Sep. 30, 2017

Mar. 31, 2017

Dec. 31, 2016

Sep. 30, 2017

Sep. 30, 2016

[1]

Jan. 31, 2018

Dec. 31, 2015

Business Acquisition [Line Items]

Payment for business acquisitions, net of cash acquired

$ 277,549,000

$ 41,558,000

Goodwill

$ 1,315,312,000

$ 1,315,312,000

$ 1,069,408,000

$ 1,315,312,000

$ 1,038,346,000

Acquisition related cost

$ 164,000

Acquired assets

412,000

Liabilities assumed

$ 617,000

TandemSeven, Inc.

Business Acquisition [Line Items]

Date of acquisition

Sep. 5, 2017

Ownership percentage acquired

100.00%

Business combination estimated purchase consideration

$ 35,720,000

Payment for business acquisitions, net of cash acquired

31,866,000

Cash and cash equivalents

$ 3,854,000

Maximum measurement period for tax position evaluation

1 year

Purchase consideration

$ 34,806,000

Cash withheld for seller

914,000

914,000

$ 914,000

Acquired intangible assets, weighted average amortization period

2 years

Goodwill

$ 25,298,000

TandemSeven, Inc. | Customer-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

2,000,000

TandemSeven, Inc. | Marketing-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

1,700,000

TandemSeven, Inc. | Technology-related intangible assets

Business Acquisition [Line Items]

Intangible assets

800,000

Rage Frameworks Inc

Business Acquisition [Line Items]

Date of acquisition

Apr. 13, 2017

Ownership percentage acquired

100.00%

Business combination estimated purchase consideration

$ 125,089,000

Payment for business acquisitions, net of cash acquired

124,149,000

Cash and cash equivalents

$ 1,605,000

Purchase consideration

125,754,000

Acquired intangible assets, weighted average amortization period

7 years

Goodwill

$ 105,114,000

Acquisition related cost

932,000

881,000

Acquired assets

7,388,000

13,836,000

Liabilities assumed

1,206,000

9,654,000

Recognized net deferred tax asset

$ 260,000

1,094,000

Business combination change in contingent consideration receivable

548,000

548,000

$ 548,000

Rage Frameworks Inc | Customer-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

1,600,000

Rage Frameworks Inc | Marketing-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

600,000

Rage Frameworks Inc | Technology-related intangible assets

Business Acquisition [Line Items]

Intangible assets

12,400,000

Rage Frameworks Inc | Other Intangible Assets

Business Acquisition [Line Items]

Intangible assets

$ 100,000

Onsource L L C

Business Acquisition [Line Items]

Date of acquisition

Jul. 18, 2017

Ownership percentage acquired

100.00%

Business combination estimated purchase consideration

$ 22,996,000

Payment for business acquisitions, net of cash acquired

22,959,000

Cash and cash equivalents

$ 37,000

Purchase consideration

$ 23,043,000

Acquired intangible assets, weighted average amortization period

4 years

Goodwill

$ 19,729,000

Acquisition related cost

1,334,000

Acquired assets

1,180,000

Liabilities assumed

793,000

Business combination change in contingent consideration receivable

47,000

47,000

$ 47,000

Onsource L L C | Customer-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

794,000

Onsource L L C | Marketing-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

936,000

Onsource L L C | Technology-related intangible assets

Business Acquisition [Line Items]

Intangible assets

1,150,000

IT Business of Birlasoft

Business Acquisition [Line Items]

Date of acquisition

Jul. 18, 2017

Purchase consideration

$ 16,309,000

Acquired intangible assets, weighted average amortization period

3 years

Goodwill

$ 9,671,000

Acquisition related cost

97,000

Acquired assets

1,381,000

Liabilities assumed

3,343,000

IT Business of Birlasoft | Customer-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

$ 8,600,000

Image Processing Business of Fiserv Solutions of Australia Pty Ltd.

Business Acquisition [Line Items]

Date of acquisition

May 11, 2017

Business combination estimated purchase consideration

$ 18,990,000

Purchase consideration

21,301,000

Acquired intangible assets, weighted average amortization period

6 years

Goodwill

$ 5,416,000

Acquisition related cost

385,000

Acquired assets

5,144,000

Liabilities assumed

5,625,000

Business combination change in contingent consideration receivable

2,311,000

2,311,000

$ 2,311,000

Recognized net deferred tax liability

5,250,000

Image Processing Business of Fiserv Solutions of Australia Pty Ltd. | Customer-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

17,400,000

Image Processing Business of Fiserv Solutions of Australia Pty Ltd. | Technology-related intangible assets

Business Acquisition [Line Items]

Intangible assets

1,806,000

Image Processing Business of Fiserv Solutions of Australia Pty Ltd. | Other Intangible Assets

Business Acquisition [Line Items]

Intangible assets

$ 100,000

Bright Claim LLC And Associated Companies

Business Acquisition [Line Items]

Ownership percentage acquired

100.00%

Payment for business acquisitions, net of cash acquired

$ 52,395,000

Cash and cash equivalents

4,002,000

Purchase consideration

$ 56,461,000

56,496,000

Acquired intangible assets, weighted average amortization period

4 years

Goodwill

$ 42,638,000

Acquisition related cost

1,563,000

Acquired assets

10,367,000

Liabilities assumed

7,415,000

Business combination change in contingent consideration receivable

35,000

35,000

35,000

Recognized net deferred tax liability

2,728,000

Business combination change in contingent consideration receivable

64,000

Business combination contingent consideration change in assets

156,000

Business combination contingent consideration change in liabilities

156,000

Business combination contingent consideration change in goodwill

64,000

Bright Claim LLC And Associated Companies | Customer-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

8,000,000

Bright Claim LLC And Associated Companies | Marketing-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

3,200,000

Bright Claim LLC And Associated Companies | Technology-related intangible assets

Business Acquisition [Line Items]

Intangible assets

2,200,000

Bright Claim LLC And Associated Companies | Other Intangible Assets

Business Acquisition [Line Items]

Intangible assets

$ 200,000

LeaseDimensions Inc.

Business Acquisition [Line Items]

Ownership percentage acquired

100.00%

Business combination estimated purchase consideration

$ 11,626,000

Payment for business acquisitions, net of cash acquired

9,089,000

Cash and cash equivalents

217,000

Purchase consideration

$ 9,454,000

Acquired intangible assets, weighted average amortization period

3 years

Goodwill

$ 8,307,000

Acquisition related cost

422,000

Acquired assets

2,277,000

Liabilities assumed

1,038,000

Business combination change in contingent consideration receivable

$ 148,000

148,000

$ 148,000

Recognized net deferred tax liability

1,320,000

Contingent earn-out consideration-Low end

0

Contingent earn-out consideration-High end

3,000,000

LeaseDimensions Inc. | Customer-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

2,400,000

LeaseDimensions Inc. | Marketing-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

$ 1,000,000

Endeavour Software Technologies Private Limited

Business Acquisition [Line Items]

Ownership percentage acquired

100.00%

Payment for business acquisitions, net of cash acquired

$ 10,345,000

Cash and cash equivalents

2,373,000

Purchase consideration

$ 14,788,000

$ 101,000

Acquired intangible assets, weighted average amortization period

3 years

Goodwill

$ 8,936,000

Acquired assets

5,854,000

Liabilities assumed

1,735,000

Business combination change in contingent consideration receivable

$ 346,000

Business combination contingent consideration change in assets

161,000

Business combination contingent consideration change in liabilities

118,000

Business combination contingent consideration change in goodwill

$ 67,000

Endeavour Software Technologies Private Limited | Customer-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

800,000

Endeavour Software Technologies Private Limited | Marketing-Related Intangible Assets

Business Acquisition [Line Items]

Intangible assets

900,000

Endeavour Software Technologies Private Limited | Other Intangible Assets

Business Acquisition [Line Items]

Intangible assets

$ 950,000

Strategic Sourcing Excellence LLC

Business Acquisition [Line Items]

Ownership percentage acquired

51.00%

Goodwill

$ 14,445,000

Business combination contingent consideration change in liabilities

51,000

Contingent earn-out consideration-High end

20,000,000

Preliminary estimated purchase consideration

14,541,000

Cash consideration to acquired certain assets and assumed certain liabilities

$ 2,550,000

Business combination contingent consideration change in current assets

69,000

Business combination contingent consideration change in noncurrent assets

$ 16,000

Equity method investment ownership percentage

49.00%

Strategic Sourcing Excellence LLC | Put Or Call Option

Business Acquisition [Line Items]

Contingent earn-out consideration-High end

$ 9,800,000

Strategic Sourcing Excellence LLC | Call Option | Scenario, Forecast

Business Acquisition [Line Items]

Equity method investment ownership percentage

49.00%

Strategic Sourcing Excellence LLC | Put Option | Scenario, Forecast

Business Acquisition [Line Items]

Equity method investment ownership percentage

49.00%

Strategic Sourcing Excellence LLC | Put Option | Scenario, Forecast | Minimum

Business Acquisition [Line Items]

Selling equity holders put option exercise price

$ 2,450,000

Strategic Sourcing Excellence LLC | Put Option | Scenario, Forecast | Maximum

Business Acquisition [Line Items]

Selling equity holders put option exercise price

$ 2,950,000

Strategic Sourcing Excellence LLC | Customer Relationships

Business Acquisition [Line Items]

Intangible assets

$ 300,000

Acquired intangible assets, weighted average amortization period

5 years

[1]

Income taxes, net income and cash flows for the nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Cash and Cash Equivalents (Deta

Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	[1]	Dec. 31, 2015	[1]
Cash And Cash Equivalents [Abstract]
Cash and other bank balances	$ 440,055	$ 422,623
Total	$ 440,055	$ 422,623	$ 419,092		$ 450,907
[1]	Income taxes, net income and cash flows for the nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Reserve for Doubtful Receivable

Reserve for Doubtful Receivables (Detail) - USD ($) $ in Thousands	9 Months Ended			12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016		Dec. 31, 2016
Receivables [Abstract]
Opening Balance	$ 15,519	$ 11,530		$ 11,530
Additions due to acquisitions	235
Additions charged to cost and expense	4,871	$ 7,307	[1]	7,282
Deductions/effect of exchange rate fluctuations	(49)			(3,293)
Closing balance	$ 20,576			$ 15,519
[1]	Income taxes, net income and cash flows for the nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Accounts Receivable, Net of R59

Accounts Receivable, Net of Reserve for Doubtful Receivables - Additional Information (Detail) - USD ($)	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Receivables [Abstract]
Gross accounts receivable	$ 691,268,000	$ 630,784,000
Reserve for doubtful receivables	20,576,000	15,519,000	$ 11,530,000
Net accounts receivable	670,692,000	615,265,000
Accounts receivable due after one year	1,880,000	3,272,000
Accounts receivable from related parties	42,000	2,490,000
Reserve for doubtful receivables from related parties	$ 0	$ 0

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities Measured on Recurring Basis, Including Derivative Instruments (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative instrument, asset	[1],[2]	$ 55,080	$ 55,386
Total, assets		55,080	55,386
Earn-out consideration	[3],[4]	17,999	22,435
Derivative instrument, liability	[2],[3]	27,763	17,353
Total, liabilities		45,762	39,788
Redeemable non-controlling interest	[5]	3,839	4,520
Fair Value, Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative instrument, asset	[1],[2]	55,080	55,386
Total, assets		55,080	55,386
Derivative instrument, liability	[2],[3]	27,763	17,353
Total, liabilities		27,763	17,353
Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Earn-out consideration	[3],[4]	17,999	22,435
Total, liabilities		17,999	22,435
Redeemable non-controlling interest	[5]	$ 3,839	$ 4,520
[1]	Included in prepaid expenses and other current assets and other assets in the consolidated balance sheets.
[2]	The Company values its derivative instruments based on market observable inputs, including both forward and spot prices for the relevant currencies and interest rate indices for relevant interest rates. The quotes are taken from an independent market database.
[3]	Included in accrued expenses and other current liabilities and other liabilities in the consolidated balance sheets.
[4]	The fair value of earn-out consideration, calculated as the present value of expected future payments to be made to the sellers of acquired businesses, was derived by estimating the future financial performance of the acquired businesses using the earn-out formula and performance targets specified in each purchase agreement and adjusting the result to reflect the Company’s estimate of the likelihood of achievement of such targets. Given the significance of the unobservable inputs, the valuations are classified in level 3 of the fair value hierarchy.
[5]	The Company’s estimate of the fair value of redeemable non-controlling interest is based on unobservable inputs considering the assumptions that market participants would make in pricing the obligation. Given the significance of the unobservable inputs, the valuation is classified in level 3 of the fair value hierarchy. See Note 3—Business Acquisitions.

Fair Value of Earn-out Consider

Fair Value of Earn-out Consideration (Detail) - Fair Value, Inputs, Level 3 - Business Acquisition Contingent Consideration - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Opening balance		$ 23,274	$ 18,438	$ 22,435	$ 22,820
Earn-out consideration payable in connection with acquisitions			4,360	2,320	14,550
Payments of earn-out consideration		(5,756)	(357)	(7,239)	(1,509)
Changes in fair value of earn-out consideration	[1]	11		(1,414)	(14,997)
Others	[2]	470	545	1,897	2,122
Ending balance		$ 17,999	$ 22,986	$ 17,999	$ 22,986
[1]	Changes in the fair value of earn-out consideration are reported in other operating (income) expense, net in the consolidated statements of income
[2]	Interest expense is included in interest income (expense), net and the impact of changes in foreign exchange is reported in foreign exchange gains (losses), net in the consolidated statements of income. The cumulative translation adjustment is reported as a component of other comprehensive income (loss).

Derivative Financial Instrume62

Derivative Financial Instruments - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative [Line Items]
Amount of gain (loss) recognized in income on ineffective portion of derivatives and amount excluded from effectiveness testing	$ 0	$ 0	$ 0	$ 0
Forward Foreign Exchange Contracts | Maximum
Derivative [Line Items]
Derivative financial instrument contracts, maturity period			51 months
Interest Rate Swaps | Maximum
Derivative [Line Items]
Derivative financial instrument contracts, maturity period			51 months

Aggregate Notional Principal Am

Aggregate Notional Principal Amounts of Outstanding Derivative Financial Instruments with Related Balance Sheet Exposure (Detail) - USD ($)		Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Derivative financial instrument, balance sheet exposure asset (liability)	[1]	$ 27,317,000	$ 38,034,000
United States dollars (sell) Indian rupees (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	[2]	1,274,026,000	1,108,400,000
Derivative financial instrument, balance sheet exposure asset (liability)	[1]	30,464,000	6,669,000
United States dollars (sell) Mexican peso (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	[2]	2,280,000	9,120,000
Derivative financial instrument, balance sheet exposure asset (liability)	[1]	362,000	(187,000)
United States dollars (sell) Philippines peso (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	[2]	66,800,000	70,050,000
Derivative financial instrument, balance sheet exposure asset (liability)	[1]	(1,635,000)	(1,036,000)
Euro (sell) United States dollars (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	[2]	161,783,000	138,613,000
Derivative financial instrument, balance sheet exposure asset (liability)	[1]	(1,760,000)	9,180,000
Pound sterling (buy) United States dollars (sell)
Derivative [Line Items]
Derivative instrument notional principal amount	[2]	16,077,000
Derivative financial instrument, balance sheet exposure asset (liability)	[1]	40,000
Euro (sell) Romanian leu (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	[2]	36,662,000	29,805,000
Derivative financial instrument, balance sheet exposure asset (liability)	[1]	(481,000)	(152,000)
Japanese yen (sell) Chinese renminbi (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	[2]	71,832,000	77,267,000
Derivative financial instrument, balance sheet exposure asset (liability)	[1]	306,000	(742,000)
Pound sterling (sell) United States dollars (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	[2]	94,728,000	104,142,000
Derivative financial instrument, balance sheet exposure asset (liability)	[1]	(605,000)	14,228,000
Australian dollars (sell) United States dollars (buy)
Derivative [Line Items]
Derivative instrument notional principal amount	[2]	145,679,000	114,412,000
Derivative financial instrument, balance sheet exposure asset (liability)	[1]	(5,934,000)	2,328,000
Interest Rate Swap Floating To Fixed [Member]
Derivative [Line Items]
Derivative instrument notional principal amount	[2]	438,290,000	456,810,000
Derivative financial instrument, balance sheet exposure asset (liability)	[1]	$ 6,560,000	$ 7,746,000
[1]	Balance sheet exposure is denominated in U.S. dollars and denotes the mark-to-market impact of the derivative financial instruments on the reporting date.
[2]	Notional amounts are key elements of derivative financial instrument agreements but do not represent the amount exchanged by counterparties and do not measure the Company’s exposure to credit or market risks. However, the amounts exchanged are based on the notional amounts and other provisions of the underlying derivative financial instrument agreements.

Fair Value of Derivative Instru

Fair Value of Derivative Instruments and Location in Financial Statements (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Prepaid Expenses and Other Current Assets | Not Designated as Hedging Instrument
Derivatives Fair Value [Line Items]
Fair value of assets	$ 883	$ 809
Accrued Expenses and Other Current Liabilities | Not Designated as Hedging Instrument
Derivatives Fair Value [Line Items]
Fair value of liabilities	2,522	237
Cash Flow Hedges | Prepaid Expenses and Other Current Assets
Derivatives Fair Value [Line Items]
Fair value of assets	33,345	33,921
Cash Flow Hedges | Other Assets
Derivatives Fair Value [Line Items]
Fair value of assets	20,852	20,657
Cash Flow Hedges | Accrued Expenses and Other Current Liabilities
Derivatives Fair Value [Line Items]
Fair value of liabilities	12,005	4,540
Cash Flow Hedges | Other Liabilities
Derivatives Fair Value [Line Items]
Fair value of liabilities	$ 13,236	$ 12,576

Cash Flow Hedges, Gains (Losses

Cash Flow Hedges, Gains (Losses) Recorded as Component of Other Comprehensive Income (Loss) or Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Opening balance, before-tax amount	$ 52,167	$ (30,790)	$ 37,461	$ (30,090)
Net gains (losses) reclassified into statement of income upon completion of hedged transactions, before-tax amount	15,451	(1,584)	40,251	(7,071)
Changes in fair value of effective portion of outstanding derivatives, net, before-tax amount	(7,760)	29,005	31,746	22,818
Gain (loss) on cash flow hedging derivatives, net, before-tax amount	(23,211)	30,589	(8,505)	29,889
Closing balance, before-tax amount	28,956	(201)	28,956	(201)
Opening balance, tax (expense) or benefit	(19,438)	8,945	(13,979)	9,830
Net gains (losses) reclassified into statement of income upon completion of hedged transactions, tax (expense) or benefit	(5,716)	11	(14,815)	1,300
Changes in fair value of effective portion of outstanding derivatives, net, tax (expense) or benefit	2,621	(10,806)	(11,937)	(10,402)
Gain (loss) on cash flow hedging derivatives, net, tax (expense) or benefit	8,337	(10,817)	2,878	(11,702)
Closing balance, tax (expense) or benefit	(11,101)	(1,872)	(11,101)	(1,872)
Opening balance, net of tax amount	32,729	(21,845)	23,482	(20,260)
Net gains (losses) reclassified into statement of income upon completion of hedged transactions, net of tax amount	9,735	(1,573)	25,436	(5,771)
Changes in fair value of effective portion of outstanding derivatives, net, net of tax amount	(5,139)	18,199	19,809	12,416
Gain (loss) on cash flow hedging derivatives, net of taxes amount	(14,874)	19,772	(5,627)	18,187
Closing balance, net of tax amount	$ 17,855	$ (2,073)	$ 17,855	$ (2,073)

Gains or Losses Recorded as Com

Gains or Losses Recorded as Component of Other Comprehensive Income (Loss) or Other Comprehensive Income (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other Comprehensive Income (Loss) [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)		$ (7,760)	$ 29,005	$ 31,746	$ 22,818
Amount of gain (loss) reclassified from OCI into statement of income (effective portion)		15,451	(1,584)	40,251	(7,071)
Non designated Hedges, amount of gain (loss) recognized in statement of income on derivatives		(1,350)	2,599	8,763	2,838
Net revenues
Other Comprehensive Income (Loss) [Line Items]
Amount of gain (loss) reclassified from OCI into statement of income (effective portion)		403	2,599	6,429	8,596
Cost of Revenue
Other Comprehensive Income (Loss) [Line Items]
Amount of gain (loss) reclassified from OCI into statement of income (effective portion)		11,666	(2,823)	26,655	(11,540)
Selling, General and Administrative Expenses
Other Comprehensive Income (Loss) [Line Items]
Amount of gain (loss) reclassified from OCI into statement of income (effective portion)		3,213	(693)	7,368	(3,073)
Interest Expense
Other Comprehensive Income (Loss) [Line Items]
Amount of gain (loss) reclassified from OCI into statement of income (effective portion)		169	(667)	(201)	(1,054)
Forward Foreign Exchange Contracts
Other Comprehensive Income (Loss) [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)		(7,779)	28,287	33,132	26,612
Forward Foreign Exchange Contracts | Foreign Exchange (Gains) Losses, Net
Other Comprehensive Income (Loss) [Line Items]
Non designated Hedges, amount of gain (loss) recognized in statement of income on derivatives	[1]	(1,350)	2,599	8,763	2,838
Interest Rate Swaps
Other Comprehensive Income (Loss) [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)		$ 19	$ 718	$ (1,386)	$ (3,794)
[1]	These forward foreign exchange contracts were entered into to hedge fluctuations in foreign exchange rates for recognized balance sheet items such as receivables and intercompany borrowings, and were not originally designated as hedges under FASB guidance on derivatives and hedging. Realized gains (losses) and changes in the fair value of these derivatives are recorded in foreign exchange gains (losses), net in the consolidated statements of income.

Prepaid Expenses and Other Cu67

Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Prepaid Expense And Other Assets Current [Abstract]
Advance income and non-income taxes	$ 96,175	$ 50,676
Deferred transition costs	50,561	45,252
Derivative instruments	34,229	34,730
Prepaid expenses	21,290	22,222
Customer acquisition cost	15,707	11,126
Employee advances	5,069	6,880
Deposits	2,855	2,688
Advances to suppliers	2,569	10,059
Others	15,412	5,516
Prepaid expenses and other current assets, net	$ 243,867	$ 189,149

Property, Plant and Equipment68

Property, Plant and Equipment, Net (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Property Plant And Equipment [Abstract]
Property, plant and equipment, gross	$ 653,523	$ 600,554
Less: Accumulated depreciation and amortization	(447,900)	(407,336)
Property, plant and equipment, net	$ 205,623	$ 193,218

Property, Plant and Equipment69

Property, Plant and Equipment, Net - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Property Plant And Equipment [Line Items]
Depreciation and amortization			$ 42,271	$ 40,366	[1]
Effect of Reclassification of Foreign Exchange (Gains) Losses
Property Plant And Equipment [Line Items]
Depreciation and amortization	$ (517)	$ 147	(1,211)	614
Depreciation Expense on Property, Plant And Equipment
Property Plant And Equipment [Line Items]
Depreciation and amortization	11,479	11,334	32,692	33,990
Computer Software Amortization
Property Plant And Equipment [Line Items]
Depreciation and amortization	$ 2,963	$ 2,182	$ 8,368	$ 6,990
[1]	Income taxes, net income and cash flows for the nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Changes in Goodwill (Detail)

Changes in Goodwill (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Opening balance	$ 1,069,408	$ 1,038,346
Goodwill relating to acquisitions consummated during the Period	216,108	51,535
Goodwill relating to divestitures consummated during the period		(2,226)
Impact of measurement period adjustments	131	(59)
Effect of exchange rate fluctuations	29,665	(18,188)
Closing balance	$ 1,315,312	$ 1,069,408

Goodwill and Intangible Asset71

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016		Sep. 30, 2017	Sep. 30, 2016		Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill deductible for tax purposes	$ 109,268			$ 109,268			$ 39,032
Amortization of acquired intangible assets	$ 10,151	$ 7,126	[1]	$ 25,780	$ 19,764	[1],[2]
Intangible assets write-down		5,381			11,195	[2]
Intangible Software Asset
Goodwill And Intangible Assets Disclosure [Line Items]
Intangible assets write-down		$ 5,381			10,324
Customer-Related Intangible Assets
Goodwill And Intangible Assets Disclosure [Line Items]
Intangible assets write-down					$ 871
[1]	Income taxes, net income and basic and diluted net income per common share for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.
[2]	Income taxes, net income and cash flows for the nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Summary of Intangible Assets (D

Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 486,423	$ 393,027
Accumulated amortization & impairment	348,208	314,081
Net	138,215	78,946
Customer-Related Intangible Assets
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	362,496	312,041
Accumulated amortization & impairment	283,459	260,018
Net	79,037	52,023
Marketing-Related Intangible Assets
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	52,275	45,098
Accumulated amortization & impairment	36,355	30,571
Net	15,920	14,527
Technology-related intangible assets
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	51,487	26,116
Accumulated amortization & impairment	26,438	21,026
Net	25,049	5,090
Other Intangible Assets
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	3,062	2,875
Accumulated amortization & impairment	1,956	2,466
Net	1,106	409
Intangible Assets Under Development [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	17,103	6,897
Net	$ 17,103	$ 6,897

Short-Term Borrowings - Additio

Short-Term Borrowings - Additional Information (Detail) - USD ($)	1 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2015	Sep. 30, 2017	Dec. 31, 2016	Aug. 30, 2012
Line Of Credit Facility [Line Items]
Fund-based and non-fund-based credit facilities limits available		$ 14,698,000	$ 15,382,000
Utilization of credit facility for non fund-based usage		7,395,000	10,980,000
Credit facility, amount utilized		160,978,000	160,978,000
Short-term borrowings		$ 160,000,000	$ 160,000,000
Revolving credit facility, expiration month and year		2020-06
Margin over LIBOR	1.50%	1.50%	1.50%
Percentage of commitment fee		0.25%	0.25%
Revolving Credit Facility
Line Of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity		$ 350,000,000		$ 250,000,000
Line of credit covenant condition		The credit agreement contains certain customary covenants, including a maximum leverage covenant and a minimum interest coverage ratio.
Non-Fund-Based Credit Facility
Line Of Credit Facility [Line Items]
Credit facility, amount utilized		$ 978,000	$ 978,000
Fund-Based Credit Facility
Line Of Credit Facility [Line Items]
Margin over LIBOR		1.50%	1.50%

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail)	1 Months Ended		9 Months Ended	12 Months Ended
	Mar. 31, 2017USD ($)Day	Jun. 30, 2015USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2016USD ($)	Aug. 30, 2012USD ($)
Debt Instrument [Line Items]
Extinguishment of outstanding term loan		$ 663,188,000
Acceleration amortization of debt issuance cost		$ 10,050,000
Margin over LIBOR		1.50%	1.50%	1.50%
Debt discount and underwriting fee			$ 1,481,000
New Credit Facility
Debt Instrument [Line Items]
Margin over LIBOR		1.50%
Credit facility, base rate		0.50%
3.70% Senior Notes
Debt Instrument [Line Items]
Debt amortization expense			2,372,000
Debt amount outstanding			$ 347,628,000
Principal amount of senior notes issued	$ 350,000,000
Interest rate on senior notes	3.70%
Net proceeds from issue of senior notes	$ 348,519,000
Debt discount and underwriting fee	1,481,000
Other debt issuance costs	1,161,000
Total debt issuance cost	$ 2,642,000
Debt instrument, maturity date			Apr. 1, 2022
Debt instrument description			The Company will pay interest on the notes semi-annually in arrears on April 1 and October 1 of each year, ending on the maturity date of April 1, 2022.
Debt instrument redemption price percentage	100.00%
Debt instrument redemption date			Mar. 1, 2022
Debt repurchase price as percentage of aggregate principal value upon certain change of controls	101.00%
Maximum increase in downgrade of credit rating of notes to adjust interest rate payable	2.00%
Debt instrument, percentage increase in interest payable on notes if exchange offer fails during first 90 days	0.25%
Debt instrument, number of days to provide offer to exchange notes for registered notes | Day	455
Debt instrument, percentage increase in interest payable on notes if exchange offer fails, after first 90 days	0.25%
Debt instrument, percentage increase in interest payable on notes if exchange offer fails, maximum	0.50%
Term Loan Credit Facility
Debt Instrument [Line Items]
Debt amortization expense			$ 2,051,000	$ 2,667,000
Debt amount outstanding			707,967,000	$ 737,333,000
Principal amount of term loan			$ 10,000,000
Credit facility, frequency of payments			Quarterly
Maturity date of term loan agreement			Jun. 30, 2020
Term Loan Credit Facility | New Credit Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 800,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity			$ 350,000,000		$ 250,000,000
Acceleration amortization of debt issuance cost		65,000
Revolving Credit Facility | New Credit Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 350,000,000

Maturity Profile of Term Loan N

Maturity Profile of Term Loan Net of Debt Amortization Expense (Detail) - Term Loan Credit Facility - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
2,017	$ 9,815
2,018	39,226
2,019	39,272
2,020	619,654
Total	$ 707,967	$ 737,333

Accrued Expenses and Other Cu76

Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accrued Liabilities And Other Liabilities [Abstract]
Accrued expenses	$ 183,261	$ 163,400
Accrued employee cost	182,211	179,360
Deferred transition revenue	47,317	50,552
Statutory liabilities	44,125	36,878
Retirement benefits	19,810	17,616
Derivative instruments	14,527	4,777
Advance from customers	27,678	21,969
Earn-out consideration	6,687	6,885
Other liabilities	13,607	15,461
Capital lease obligations	1,520	1,349
Accrued expenses and other current liabilities, net	$ 540,743	$ 498,247

Other Liabilities (Detail)

Other Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Other Liabilities Disclosure [Abstract]
Accrued employee cost	$ 16,234	$ 3,976
Deferred transition revenue	74,860	72,560
Retirement benefits	45,243	39,020
Derivative instruments	13,236	12,576
Amount received from GE under indemnification arrangement, pending adjustment	3,294	3,159
Advance from customers	232	2,371
Earn-out consideration	11,312	15,550
Others	17,803	11,078
Capital lease obligations	2,751	2,500
Other Liabilities	$ 184,965	$ 162,790

Net Defined Benefit Plan Costs

Net Defined Benefit Plan Costs (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Compensation And Retirement Disclosure [Abstract]
Service costs	$ 1,814	$ 1,207	$ 5,391	$ 4,040
Interest costs	776	559	2,303	1,870
Amortization of actuarial loss	221	34	653	15
Expected return on plan assets	(529)	(469)	(1,560)	(1,449)
Net defined benefit plan costs	$ 2,282	$ 1,331	$ 6,787	$ 4,476

Amounts Contributed to Defined

Amounts Contributed to Defined Contribution Plans in Various Jurisdictions (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	$ 14,984	$ 13,971	$ 46,405	$ 42,067
India
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	5,731	4,843	16,514	13,877
U.S.
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	2,228	2,216	9,148	7,951
U.K.
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	1,887	1,596	5,961	5,177
China
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	4,132	4,158	11,700	11,555
Other regions
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	$ 1,006	$ 1,158	$ 3,083	$ 3,507

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($)	Apr. 11, 2012	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	May 09, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation cost		$ 9,907,000	$ 4,718,000	$ 21,985,000	$ 18,046,000
Options granted, contractual period, years				10 years
Unrecognized stock-based compensation cost for options		8,182,000		$ 8,182,000
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average remaining requisite vesting period				2 years 8 months 13 days
Restricted Share Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average remaining requisite vesting period				3 years 1 month 7 days
Unrecognized stock-based compensation cost		29,339,000		$ 29,339,000
Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average remaining requisite vesting period				2 years 1 month 7 days
Unrecognized stock-based compensation cost		$ 27,746,000		$ 27,746,000
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
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%		15.00%
Maximum dollar amount of common shares allowed to be purchased				$ 25,000
Common shares reserved for issuance		4,200,000		4,200,000
Issuance of common shares under the employee stock purchase plan (in shares)				150,265	105,856
Compensation expense for ESPP		$ 144,000	$ 110,000	$ 417,000	$ 298,000
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award, vesting period, years				4 years
Minimum | Restricted Share Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award, vesting period, years				3 months
Minimum | Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award, vesting period, years				6 months
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award, vesting period, years				5 years
Maximum | Restricted Share Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award, vesting period, years				4 years
Maximum | Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award, vesting period, years				3 years
2007 Omnibus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Amended Omnibus Plan, increase in number of common shares authorized for issuance	5,593,200
Number of common shares authorized for issuance	15,000,000
Genpact Limited 2017 Omnibus Incentive Compensation Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of common shares authorized for issuance						15,000,000

Significant Assumptions used in

Significant Assumptions used in Determination of Fair Value of Options Granted (Detail)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Dividend yield	0.97%
Expected life (in months)	84 months	84 months
Risk-free rate of interest	2.25%
Risk-free rate of interest, minimum		1.42%
Risk-free rate of interest, maximum		1.56%
Volatility	24.28%
Volatility, minimum		25.60%
Volatility, Maximum		27.22%

Summary of Stock Option Activit

Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2017	Dec. 31, 2016
Shares arising out of options
Outstanding, shares arising out of options, beginning balance		5,707,690
Granted, shares arising out of options		250,000
Forfeited, shares arising out of options		(80,000)
Exercised, shares arising out of options		(641,900)
Outstanding, shares arising out of options, ending balance		5,235,790	5,707,690
Vested and expected to vest thereafter, shares arising out of options	[1]	5,036,756
Vested and exercisable, shares arising out of options		2,304,291
Weighted average grant-date fair value of options granted during the period		$ 6.62
Weighted average exercise price
Outstanding weighted average exercise price, beginning balance		18.65
Granted, weighted average exercise price		24.74
Forfeited, weighted average exercise price		20.63
Exercised, weighted average exercise price		14.40
Outstanding weighted average exercise price, ending balance		19.44	$ 18.65
Vested and expected to vest thereafter, weighted average exercise price	[1]	19.22
Vested and exercisable, weighted average exercise price		$ 16.12
Weighted average remaining contractual life (years)
Outstanding weighted average remaining contractual life (years)		5 years 9 months 18 days	5 years 9 months 18 days
Vested and expected to vest thereafter, weighted average remaining contractual life (years)	[1]	5 years 9 months 18 days
Vested and exercisable, weighted average remaining contractual life (years)		4 years 3 months 19 days
Aggregate intrinsic value
Exercised, aggregate intrinsic value		$ 8,707
Outstanding aggregate intrinsic value, ending balance		48,770
Vested and expected to vest thereafter, aggregate intrinsic value	[1]	47,981
Vested and exercisable, aggregate intrinsic value		$ 29,095
[1]	Options expected to vest reflect an estimated forfeiture rate.

Summary of Restricted Share Uni

Summary of Restricted Share Units Granted (Detail) - Restricted Share Units (RSUs) - $ / shares		9 Months Ended	12 Months Ended
		Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Number of Restricted Share Units
Outstanding number of shares (Units), beginning balance		117,905
Granted, number of shares (Units)		1,518,565
Vested, number of shares (Units)	[1]	(45,248)
Forfeited, number of shares (Units)		(1,242)
Outstanding number of shares (Units), ending balance		1,589,980	117,905
Expected to vest, number of shares (Units)	[2]	1,324,508
Weighted Average Grant Date Fair Value
Outstanding weighted average grant date fair value, beginning balance		$ 20.65
Granted, weighted average grant date fair value		26.30
Vested, weighted average grant date fair value	[1]	18.31
Forfeited, weighted average grant date fair value		25.53
Outstanding weighted average grant date fair value, ending balance		$ 26.11	$ 20.65
Shares to be issued on vested awards other than options			34,035	53,546
Vested in December 31, 2015
Weighted Average Grant Date Fair Value
Vested RSU issued during the period		53,023
Vested in December 31, 2016
Weighted Average Grant Date Fair Value
Vested RSU issued during the period		17,802
[1]	RSUs that vested during the period were net settled upon vesting by issuing 32,395 shares (net of minimum statutory tax withholding).
[2]	The number of RSUs expected to vest reflects an estimated forfeiture rate.

Summary of Restricted Share U84

Summary of Restricted Share Units Granted (Parenthetical) (Detail)	9 Months Ended
	Sep. 30, 2017shares
Restricted Share Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
RSUs settled on vesting by issuing shares (net of minimum tax withholding)	32,395

Summary of Performance Units Ac

Summary of Performance Units Activity (Detail) - Performance Units	9 Months Ended
	Sep. 30, 2017$ / sharesshares
Number of Restricted Share Units
Outstanding number of shares (Units), beginning balance	3,772,128
Granted, number of shares (Units)	1,811,292
Vested, number of shares (Units)	(1,136,047)	[1]
Forfeited, number of shares (Units)	(1,557,067)	[2]
Outstanding number of shares (Units), ending balance	2,890,306
Expected to vest, number of shares (Units)	2,248,990	[3]
Weighted Average Grant Date Fair Value
Outstanding weighted average grant date fair value, beginning balance | $ / shares	$ 23.04
Granted, weighted average grant date fair value | $ / shares	25.22
Vested, weighted average grant date fair value | $ / shares	16.78	[1]
Forfeited, weighted average grant date fair value | $ / shares	27.62	[2]
Outstanding weighted average grant date fair value, ending balance | $ / shares	$ 24.40
Maximum shares eligible to receive
Outstanding maximum shares eligible to receive, beginning balance	5,524,114
Granted, maximum shares eligible to receive	3,622,584
Vested, maximum shares eligible to receive	(1,136,047)	[1]
Forfeited, maximum shares eligible to receive	(1,580,267)	[2]
Adjustment upon final determination of level of performance goal achievement	(1,747,586)	[4]
Outstanding maximum shares eligible to receive, ending balance	4,682,798
[1]	PUs that vested during the period were net settled upon vesting by issuing 731,701 shares (net of minimum statutory tax withholding).
[2]	Includes 1,443,624 target shares underlying PUs granted in 2016 which were forfeited for failure to achieve all of the threshold performance targets under such awards as certified by the compensation committee based on the Company’s audited financial statements for the year ended December 31, 2016.
[3]	The number of PUs expected to vest is based on the probable achievement of the performance targets after considering an estimated forfeiture rate.
[4]	Represents the difference between the maximum number of shares achievable under the PUs granted in 2016 and the number of target shares underlying the PUs granted in 2016, which were forfeited for failure to achieve all of the threshold performance targets under such awards as certified by the compensation committee based on the Company’s audited financial statements for the year ended December 31, 2016.

Summary of Performance Units 86

Summary of Performance Units Activity (Parenthetical) (Detail) - shares	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares issued, net of minimum statutory withholding taxes	731,701
Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Forfeited, number of shares (Units)		1,443,624

Capital Stock - Additional Info

Capital Stock - Additional Information (Detail) - USD ($)	Sep. 21, 2017	Jun. 28, 2017	Mar. 29, 2017	Mar. 28, 2017	Feb. 28, 2017	Sep. 30, 2017	Sep. 30, 2016		Feb. 10, 2017	Dec. 31, 2016
Class Of Stock [Line Items]
Stock repurchase authorized amount									$ 1,250,000,000	$ 750,000,000
Additional stock repurchase authorized amount									$ 500,000,000
Aggregate amount of common stock shares repurchased						$ 219,784,000	$ 242,552,000	[1]
Expenses related to stock purchases						16,000	192,000
Quarterly dividend declared					$ 0.06
Planned annual dividend					$ 0.24
Initial dividend paid	$ 11,581,000	$ 11,558,000		$ 11,957,000
Dividends payable, date declared					2017-02
Dividends paid per share	$ 0.06	$ 0.06		$ 0.06
First Quarter Dividend
Class Of Stock [Line Items]
Dividend payment date					Mar. 28, 2017
Dividends payable, date of record					Mar. 10, 2017
Second Quarter Dividend
Class Of Stock [Line Items]
Dividend payment date					Jun. 28, 2017
Dividends payable, date of record					Jun. 12, 2017
Third Quarter Dividend
Class Of Stock [Line Items]
Dividend payment date					Sep. 21, 2017
Dividends payable, date of record					Sep. 8, 2017
Retained Earnings
Class Of Stock [Line Items]
Expenses related to stock purchases						16,000	$ 192,000	[2]
Initial dividend paid						$ 35,096,000
Accelerated Share Repurchase Agreement
Class Of Stock [Line Items]
Aggregate purchase price of common shares			$ 200,000,000
Initial delivery of common shares received			6,578,947
Initial delivery of common shares received price per share			$ 24.32
Shares repurchased and retired (in shares)						6,578,947
Common stock shares repurchased price per share						$ 24.32
Aggregate amount of common stock shares repurchased						$ 160,000,000
Aggregate amount of common stock shares repurchased, final payment						$ 40,000,000
Accelerated Share Repurchase Agreement | Retained Earnings
Class Of Stock [Line Items]
Reduction to shareowners' equity			$ 160,000,000
Accelerated Share Repurchase Agreement | Additional Paid- in Capital
Class Of Stock [Line Items]
Reduction to shareowners' equity			$ 40,000,000
Open Market Repurchase
Class Of Stock [Line Items]
Shares repurchased and retired (in shares)						808,293	9,615,323
Common stock shares repurchased price per share						$ 24.48	$ 25.23
Aggregate amount of common stock shares repurchased						$ 19,784,000	$ 242,552,000
[1]	Income taxes, net income and cash flows for the nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.
[2]	Net income, additional paid-in capital and retained earnings for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Number of stock awards outstanding but not included in the computation of diluted earnings per common share	1,113,307	947,778	1,122,559	698,286

Earnings Per Share (Detail)

Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016		Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share (Abstract)
Net income available to Genpact Limited common shareholders	$ 73,745	$ 68,922	[1]	$ 196,029	$ 193,385	[1]
Weighted average number of common shares used in computing basic earnings per common share	192,124,366	206,146,007	[1]	194,221,162	209,034,741	[1]
Dilutive effect of stock-based awards	2,823,333	3,230,676		2,890,852	3,322,853
Weighted average number of common shares used in computing dilutive earnings per common share	194,947,699	209,376,683	[1]	197,112,014	212,357,594	[1]
Basic	$ 0.38	$ 0.33	[1]	$ 1.01	$ 0.93	[1]
Diluted	$ 0.38	$ 0.33	[1]	$ 0.99	$ 0.91	[1]
[1]	Income taxes, net income and basic and diluted net income per common share for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Cost of Revenue (Detail)

Cost of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016		Sep. 30, 2017	Sep. 30, 2016
Component Of Operating Other Cost And Expense [Line Items]
Cost of revenue	$ 429,191	$ 392,432	[1]	$ 1,227,821	$ 1,149,035	[1]
Personnel expenses
Component Of Operating Other Cost And Expense [Line Items]
Cost of revenue	293,253	269,771		847,784	788,768
Operational expenses
Component Of Operating Other Cost And Expense [Line Items]
Cost of revenue	123,995	111,443		346,300	325,938
Depreciation and amortization
Component Of Operating Other Cost And Expense [Line Items]
Cost of revenue	$ 11,943	$ 11,218		$ 33,737	$ 34,329
[1]	Income taxes, net income and basic and diluted net income per common share for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Selling, General and Administ91

Selling, General and Administrative Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016		Sep. 30, 2017	Sep. 30, 2016
Component Of Operating Other Cost And Expense [Line Items]
Selling, general and administrative expenses	$ 172,095	$ 156,969	[1]	$ 500,854	$ 482,315	[1]
Personnel expenses
Component Of Operating Other Cost And Expense [Line Items]
Selling, general and administrative expenses	126,612	117,022		371,867	343,279
Operational expenses
Component Of Operating Other Cost And Expense [Line Items]
Selling, general and administrative expenses	42,984	37,649		121,664	132,385
Depreciation and amortization
Component Of Operating Other Cost And Expense [Line Items]
Selling, general and administrative expenses	$ 2,499	$ 2,298		$ 7,323	$ 6,651
[1]	Income taxes, net income and basic and diluted net income per common share for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Other Operating Income (Expense

Other Operating Income (Expense), Net (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016		Sep. 30, 2017	Sep. 30, 2016
Other Income And Expenses [Abstract]
Other operating (income) expense	$ (75)	$ (249)		$ (7,103)	$ (990)
Provision for impairment of intangible assets		5,381			11,195	[1]
Change in fair value of earn-out consideration and deferred consideration (relating to business acquisitions)	11			(1,414)	(14,996)
Other operating (income) expense, net	$ (64)	$ 5,132	[2]	$ (8,517)	$ (4,791)	[2]
[1]	Income taxes, net income and cash flows for the nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.
[2]	Income taxes, net income and basic and diluted net income per common share for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Interest Income (Expense), Ne93

Interest Income (Expense), Net (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016		Sep. 30, 2017	Sep. 30, 2016
Other Income And Expenses [Abstract]
Interest income	$ 2,549	$ 1,041		$ 4,543	$ 5,565
Interest expense	(11,273)	(5,942)		(28,610)	(16,737)
Interest income (expense), net	$ (8,724)	$ (4,901)	[1]	$ (24,067)	$ (11,172)	[1]
[1]	Income taxes, net income and basic and diluted net income per common share for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 22,969	$ 23,467
Unrecognized tax benefits that would impact effective tax rate	21,964	22,469
Unrecognized tax benefits, interest on income taxes accrued	4,266	3,856
Unrecognized tax benefits, excluding exchange rate differences for interest recognized	248	(206)
Accrued penalties	$ 912	$ 977

Activities Related to Unrecogni

Activities Related to Unrecognized Tax Benefits for Uncertain Tax Positions (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Income Tax Uncertainties [Abstract]
Beginning balance	$ 23,467
Increase related to prior year tax positions, including recorded in acquisition accounting	515
Decrease related to prior year tax positions	(1,203)
Decrease related to prior year tax positions due to lapse of applicable statute of limitation	(663)
Effect of exchange rate changes	853
Ending balance	$ 22,969

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016		Sep. 30, 2017	Sep. 30, 2016		Dec. 31, 2016
Related Party Transaction [Line Items]
Accounts receivable from related parties	$ 42			$ 42			$ 2,490
Recognized loss from investment		$ 2,117	[1]	4,567	$ 6,336	[1],[2]
Investment in equity affiliates	833			833			4,800
Affiliate of Significant Shareholder
Related Party Transaction [Line Items]
Recognized net revenues	112	89		299	257
Non-Consolidating Affiliates
Related Party Transaction [Line Items]
Recognized net revenues		1,625		5,400	5,109
Cost of revenue	336	722		1,245	1,675
Selling, general and administrative expenses, net of recovery	51	107		199	234
Investment in equity affiliates				496
Recognized loss from investment				2,849
Investment in equity affiliates	833			833			$ 4,800
Cost reimbursements from non-consolidating affiliates		244		477	918
Non-Consolidating Affiliates | U.K.
Related Party Transaction [Line Items]
Payment to non-consolidating affiliate against consortium relief				3,847
Significant Shareholder of Company
Related Party Transaction [Line Items]
Selling, general and administrative expenses, net of recovery	$ 6	$ 43		$ 51	$ 58
[1]	Income taxes, net income and basic and diluted net income per common share for the three and nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.
[2]	Income taxes, net income and cash flows for the nine months ended September 30, 2016 have been restated due to the adoption of ASU No. 2016-09 in 2016 with effect from January 1, 2016.

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Commitments And Contingencies [Line Items]
Bank guarantees, outstanding	$ 8,373	$ 11,958
Capital Addition Purchase Commitments
Commitments And Contingencies [Line Items]
Commitments and contingencies	$ 6,181	$ 5,185