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           Financial Instruments - Fair Value and Settlements of Derivatives (Details) (USD $) 
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        3 Months Ended | ||
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           Mar. 31, 2013 
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           Mar. 31, 2012 
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           Dec. 31, 2012 
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| Derivative Instruments, Gain (Loss) [Line Items] | |||
| Derivative gain (loss), net | $ (17,468,000) | $ (836,000) | |
| Collateral deposited | 1,400,000 | 900,000 | |
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           Fuel Derivatives [Member] 
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| Derivative Instruments, Gain (Loss) [Line Items] | |||
| Derivative gain (loss), net | 515,000 | ||
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           Cheniere Marketing, LLC [Member] | LNG Lease Agreement [Member] | LNG Inventory Derivatives [Member] 
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| Derivative Instruments, Gain (Loss) [Line Items] | |||
| Derivative gain (loss), net | $ (550,000) | $ 1,171,000 | |
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- Definition 
          The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
          
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- Definition 
          Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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