Derivative Financial Instruments - Summary of (Gain) Loss Reclassified From Accumulated Other Comprehensive Loss Earnings For Derivatives (Detail) $ in Thousands	6 Months Ended
Jun. 30, 2017 USD ($)
Derivative Instruments Gain Loss [Line Items]
(Gain) loss on derivative hedging instruments	$ 14,294
Cross Currency Swap Agreements [Member] \| Designated as Hedging Instrument [Member] \| Other Non-operating (Income) Expense, Net [Member]
Derivative Instruments Gain Loss [Line Items]
(Gain) loss on derivative hedging instruments	8,486
Cross Currency Swap Agreements [Member] \| Not Designated as Hedging Instrument [Member] \| Other Non-operating (Income) Expense, Net [Member]
Derivative Instruments Gain Loss [Line Items]
(Gain) loss on derivative hedging instruments	$ 5,808

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624177-113959

Name:	us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration