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Financial Instruments - Derivative Instruments, Gain (Loss) (Details) (USD $)
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1 Months Ended | 3 Months Ended | 9 Months Ended | ||
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May 31, 2014
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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LNG Inventory Derivatives [Member] | Derivative gain (loss), net [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||
| Derivative, Gain (Loss) on Derivative, Net | $ 194,000 | $ 201,000 | $ (345,000) | $ 976,000 | |
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LNG Inventory Derivatives [Member] | Marketing and trading revenues (losses) [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||
| Derivative, Gain (Loss) on Derivative, Net | (289,000) | 14,000 | (32,000) | (394,000) | |
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Fuel Derivatives [Member] | Derivative gain (loss), net [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||
| Derivative, Gain (Loss) on Derivative, Net | 0 | (55,000) | 281,000 | (3,000) | |
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Fuel Derivatives [Member] | Revenues [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||
| Derivative, Gain (Loss) on Derivative, Net | (236,000) | (57,000) | (123,000) | (57,000) | |
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Interest Rate Contract [Member] | Derivative gain (loss), net [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||
| Derivative, Gain (Loss) on Derivative, Net | (9,300,000) | ||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | $ 5,379,000 | $ (22,481,000) | $ (89,222,000) | $ 60,707,000 | |