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Long-Term Debt - Liquifaction Credit Facility (Details) (USD $)
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9 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended | |||||
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2012
Liquefaction Credit Facility [Member]
Line of Credit
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Aug. 31, 2012
Sabine Pass Liquefaction
Liquefaction Credit Facility [Member]
Line of Credit
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Jul. 31, 2012
Sabine Pass Liquefaction
Liquefaction Credit Facility [Member]
Line of Credit
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Sep. 30, 2012
Operations
Liquifaction Credit Facility - LIBOR Loans
Line of Credit
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Sep. 30, 2012
Operations
Liquifaction Credit Facility - Base Rate Loans
Line of Credit
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Sep. 30, 2012
Construction
Liquifaction Credit Facility - LIBOR Loans
Line of Credit
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Sep. 30, 2012
Construction
Liquifaction Credit Facility - Base Rate Loans
Line of Credit
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| Line of Credit Facility [Line Items] | |||||||||
| Aggregate principal amount of debt | $ 3,600,000,000 | ||||||||
| Proceeds from Lines of Credit | 100,000,000 | 0 | 100,000,000 | ||||||
| Aggregate Proceeds from Equity or Subordinated Debt, Minimum | 1,900,000,000 | ||||||||
| Aggregate Proceeds From Equity Or Subordinated Debt, Applied to Project, Minimum | 1,800,000,000 | ||||||||
| Debt Instrument, Description of Variable Rate Basis | LIBOR | ||||||||
| Additional basis points | 3.75% | 2.75% | 3.50% | 2.50% | |||||
| Line of Credit Facility, Collateral Fees, Amount | 178,000,000 | ||||||||
| Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 40.00% | ||||||||
| Line of Credit Facility, Amortization Period | 18 years | ||||||||
| Restricted Cash and Cash Equivalents | 100,000,000 | ||||||||
| Line of Credit Facility, Percentage of Projected Outstanding Borrowings Under Swap Agreement | 75.00% | ||||||||
| Line of Credit Facility, Maximum Forecasted Borrowings Under Swap Agreement | $ 2,900,000,000 | ||||||||
| Line of Credit Facility, Interest Rate During Period | 1.98% | ||||||||