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Derivative Instruments and Hedging Activities - Effect of (Loss) Gain on Derivatives Not Designated as Hedging Instruments (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Realized (losses) gains relating to: |  |  |
Derivative instruments not designated as hedging instruments realized gain (loss) net | $ (110,670) | $ (272,596) | $ (164,286)
Unrealized gains (losses) relating to: |  |  |
Derivative instruments not designated as hedging instruments unrealized gain (loss) net | 30,318 | (70,126) | (135,312)
Total realized and unrealized losses on derivative instruments | (80,352) | (342,722) | (299,598)
Interest rate swap agreements [Member] |  |  |
Realized (losses) gains relating to: |  |  |
Derivative instruments not designated as hedging instruments realized gain (loss) net | (123,277) | (132,931) | (154,098)
Unrealized gains (losses) relating to: |  |  |
Derivative instruments not designated as hedging instruments unrealized gain (loss) net | 26,770 | (58,405) | (146,780)
Interest rate swap agreement amendments [Member] |  |  |
Realized (losses) gains relating to: |  |  |
Derivative instruments not designated as hedging instruments realized gain (loss) net |  | (149,666) |
Foreign currency forward contracts [Member] |  |  |
Realized (losses) gains relating to: |  |  |
Derivative instruments not designated as hedging instruments realized gain (loss) net | 1,155 | 9,965 | (2,274)
Unrealized gains (losses) relating to: |  |  |
Derivative instruments not designated as hedging instruments unrealized gain (loss) net | 6,933 | (11,399) | 6,307
Forward freight agreements and bunker fuel swap contracts [Member] |  |  |
Realized (losses) gains relating to: |  |  |
Derivative instruments not designated as hedging instruments realized gain (loss) net |  | 36 | (7,914)
Unrealized gains (losses) relating to: |  |  |
Derivative instruments not designated as hedging instruments unrealized gain (loss) net |  |  | (108)
Foinaven embedded derivative [Member] |  |  |
Realized (losses) gains relating to: |  |  |
Derivative instruments not designated as hedging instruments realized gain (loss) net | 11,452 |  |
Unrealized gains (losses) relating to: |  |  |
Derivative instruments not designated as hedging instruments unrealized gain (loss) net | $ (3,385) | $ (322) | $ 5,269

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- Definition Derivative instruments not designated as hedging instruments realized gain loss net. + References No definition available. + Details
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- Definition Derivative instruments not designated as hedging instruments unrealized gain loss net. + References No definition available. + Details
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- Definition Net gain (loss) from the increase (decrease) in fair value of derivative instrument not designated as hedging instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph b(1)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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