Derivative Instruments and Hedging Activities - Location and Fair Value Amounts of Derivative Instruments (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Prepaid expenses and other	$ 116,270	$ 102,429
Other non-current assets	4,189	17,844
Accrued Liabilities	(410,084)	(412,278)
Current Portion of Derivative Liabilities	(154,166)	(267,539)
Derivative Liabilities	(612,437)	(414,084)
Designated as Hedging Instrument [Member] \| Interest rate swap agreements [Member]
Derivatives, Fair Value [Line Items]
Current Portion of Derivative Liabilities	(760)	(338)
Derivative Liabilities	(14,436)	(777)
Not Designated as Hedging Instrument [Member] \| Foreign currency contracts [Member]
Derivatives, Fair Value [Line Items]
Other non-current assets	347
Current Portion of Derivative Liabilities	(4,513)	(16,372)
Derivative Liabilities	(28)	(2,534)
Not Designated as Hedging Instrument [Member] \| Interest rate swap agreements [Member]
Derivatives, Fair Value [Line Items]
Other non-current assets	2,009	7,516
Current Portion of Derivative Liabilities	(79,293)	(198,196)
Derivative Liabilities	(412,053)	(154,673)
Not Designated as Hedging Instrument [Member] \| Cross currency swap agreements [Member]
Derivatives, Fair Value [Line Items]
Current Portion of Derivative Liabilities	(69,600)	(52,633)
Derivative Liabilities	(185,920)	(256,100)
Not Designated as Hedging Instrument [Member] \| Warrant [Member]
Derivatives, Fair Value [Line Items]
Other non-current assets	1,833	10,328
Derivative [Member]
Derivatives, Fair Value [Line Items]
Prepaid expenses and other	1,890	80
Accrued Liabilities	(18,123)	(21,725)
Derivative [Member] \| Designated as Hedging Instrument [Member] \| Interest rate swap agreements [Member]
Derivatives, Fair Value [Line Items]
Accrued Liabilities	(184)
Derivative [Member] \| Not Designated as Hedging Instrument [Member] \| Foreign currency contracts [Member]
Derivatives, Fair Value [Line Items]
Prepaid expenses and other	432	80
Derivative [Member] \| Not Designated as Hedging Instrument [Member] \| Interest rate swap agreements [Member]
Derivatives, Fair Value [Line Items]
Prepaid expenses and other	113
Accrued Liabilities	(14,891)	(18,348)
Derivative [Member] \| Not Designated as Hedging Instrument [Member] \| Cross currency swap agreements [Member]
Derivatives, Fair Value [Line Items]
Accrued Liabilities	(3,048)	$ (3,377)
Derivative [Member] \| Not Designated as Hedging Instrument [Member] \| Time-charter Swap [Member]
Derivatives, Fair Value [Line Items]
Prepaid expenses and other	$ 1,345

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
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Sum as of the balance sheet date of the (a) fair values of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and (b) the carrying amounts of the liabilities arising from financial instruments or contracts used to mitigate a specified risk (hedge), and which are expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements.

+ References

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- Definition

Carrying amount as of the balance sheet date of the assets arising from derivative contracts and hedging activities, which are expected to be converted into cash or otherwise disposed of after a year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

+ References

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-Publisher FASB
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 8
-Article 5

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