| Financial Instruments - Fair Value and Settlements of Derivatives (Details) (USD $) | 3 Months Ended | 6 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2012 | Jun. 30, 2013
 Interest Rate Contract [Member] | Jun. 30, 2012
 Interest Rate Contract [Member] | Jun. 30, 2013
 Fuel Derivatives [Member] | Jun. 30, 2012
 Fuel Derivatives [Member] | Jun. 30, 2013
 Fuel Derivatives [Member] | Jun. 30, 2012
 Fuel Derivatives [Member] | Dec. 31, 2012
 Fuel Derivatives [Member] | Mar. 31, 2013
 LNG Inventory Derivatives [Member] | Mar. 31, 2012
 LNG Inventory Derivatives [Member] | Jun. 30, 2013
 LNG Inventory Derivatives [Member] | Jun. 30, 2012
 LNG Inventory Derivatives [Member] | Dec. 31, 2012
 LNG Inventory Derivatives [Member] | Jun. 30, 2013
 Not Designated as Hedging Instrument [Member]
 Interest Rate Contract [Member] | Dec. 31, 2012
 Not Designated as Hedging Instrument [Member]
 Interest Rate Contract [Member] | Jun. 30, 2013
 Not Designated as Hedging Instrument [Member]
 Sabine Pass Liquefaction [Member]
 Interest Rate Contract [Member] | Jun. 30, 2013
 Gain (Loss) on Settlement of Derivative Instrument [Member]
 Interest Rate Contract [Member] | Jun. 30, 2012
 Gain (Loss) on Settlement of Derivative Instrument [Member]
 Interest Rate Contract [Member] | Jun. 30, 2013
 Designated as Hedging Instrument [Member]
 Interest Rate Contract [Member] | Jun. 30, 2012
 Designated as Hedging Instrument [Member]
 Interest Rate Contract [Member] | Jun. 30, 2013
 Designated as Hedging Instrument [Member]
 Interest Rate Contract [Member] | Jun. 30, 2012
 Designated as Hedging Instrument [Member]
 Interest Rate Contract [Member] | Dec. 31, 2012
 Designated as Hedging Instrument [Member]
 Interest Rate Contract [Member] | |
| Derivative [Line Items] | |||||||||||||||||||||||||||
| Derivative gain (loss) in Other Comprehensive Income | $ 0 | $ 0 | $ 21,297,000 | $ 0 | |||||||||||||||||||||||
| Derivative, Collateral, Right to Reclaim Cash | 5,300,000 | 5,300,000 | 5,900,000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| Derivative gain (loss) | 95,509,000 | 261,000 | 78,041,000 | (575,000) | (504,000) | 261,000 | 11,000 | (575,000) | 892,000 | (995,000) | 368,000 | 864,000 | |||||||||||||||
| Notional Amount of Interest Rate Derivatives | 0 | ||||||||||||||||||||||||||
| Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||||||
| Derivative gain (loss) recognized in income (ineffective portion and amount excluded from Effectiveness Testing) | (167,000) | 0 | (167,000) | 0 | (5,806,000) | 0 | (5,806,000) | 0 | |||||||||||||||||||
| Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax | $ 0 | $ 0 | $ (30,000) | $ 0 | $ 0 | $ 0 | $ (30,000) | $ 0 | |||||||||||||||||||