Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
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Contractual interest rate for funds borrowed, under the debt agreement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Estimated period for the anticipated transfer of gain (loss), net, from accumulated other comprehensive income into earnings, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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The net gain (loss) relating to components of the gain (loss) on foreign currency cash flow hedging instruments excluded from the assessment of hedge effectiveness. Recognized in earnings.

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The amount of net gain (loss) reclassified into earnings when foreign currency cash flow hedge is discontinued because it is probable that the original forecasted transactions will not occur by the end of the original period or an additional two month time period.

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Date the foreign currency exchange rate derivatives mature or expire, in CCYY-MM-DD format.

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Number of foreign currency exchange rate derivatives held by the entity at the reporting date.

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Derivative Financial Instruments - Additional Information (Detail)	3 Months Ended	6 Months Ended
	Jun. 30, 2017 USD ($) Derivative	Jun. 30, 2017 USD ($) Derivative	Jun. 30, 2017 INR (₨) Derivative	Jun. 18, 2013 USD ($)
1.25% Call Option [Member]
Derivative [Line Items]
Debt instrument interest rate	1.25%	1.25%	1.25%
Foreign Exchange Forward Contracts [Member]
Derivative [Line Items]
Number of contracts \| Derivative	15	15	15
Amount of Gain (Loss) Recognized in AOCI (Effective Portion)	$ 0	$ 0
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	0	0
Unrealized derivatives gains (losses) included in other comprehensive (loss) income reclassified into income	2,100,000	$ 2,100,000
Estimated period of unrealized gains included in AOCI reclassified into income		12 months
Foreign Exchange Forward Contracts [Member] \| Minimum [Member]
Derivative [Line Items]
Date of contracts mature		Jul. 31, 2017
Derivative notional amount outstanding	400,000	$ 400,000	₨ 25,000,000
Foreign Exchange Forward Contracts [Member] \| Maximum [Member]
Derivative [Line Items]
Date of contracts mature		Jun. 30, 2018
Derivative notional amount outstanding	$ 1,900,000	$ 1,900,000	₨ 120,000,000
1.25% Notes Embedded Cash Conversion Option [Member]
Derivative [Line Items]
Debt instrument interest rate	1.25%	1.25%	1.25%
1.25% Notes Embedded Cash Conversion Option [Member] \| Level 3 [Member] \| Fair Value Measurements, Recurring [Member]
Derivative [Line Items]
Fair value liability of embedded cash conversion option				$ 82,800,000