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Financial Instruments Financial Instruments - Fair Value of Derivative Instruments by Balance Sheet Location (Details) (USD $)
In Thousands, unless otherwise specified |
Jun. 30, 2014
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Dec. 31, 2013
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Interest Rate Contract [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative Assets (Liabilities), at Fair Value, Net | $ 7,130 | $ 84,639 |
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LNG Inventory Derivatives [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative Assets (Liabilities), at Fair Value, Net | 10 | (171) |
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LNG Inventory Derivatives [Member] | Prepaid Expenses And Other [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative Assets (Liabilities), at Fair Value, Net | 10 | (171) |
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Fuel Derivatives [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative Assets (Liabilities), at Fair Value, Net | 97 | 126 |
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Fuel Derivatives [Member] | Prepaid Expenses And Other [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative Assets (Liabilities), at Fair Value, Net | 97 | 126 |
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Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Noncurrent Derivative Assets [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Interest Rate Derivative Assets, at Fair Value | 20,236 | 98,123 |
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Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Other Current Liabilities [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Interest Rate Derivative Liabilities, at Fair Value | $ (13,106) | $ (13,484) |