Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments - Narrative (Details)

v2.4.1.9
Derivative Instruments - Narrative (Details) (USD $)
 12 Months Ended 3 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Mar. 31, 2015
Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Asset Transfers into Level 3 $ 0us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3 $ 0us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3    
Asset Transfers out of Level 3 0us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3 0us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3    
Energy Units Secured Through Long-Term Purchase Agreements, in MMBtu     2,161,900,000lng_EnergyUnitsSecuredThroughLongTermPurchaseAgreements 2,161,900,000lng_EnergyUnitsSecuredThroughLongTermPurchaseAgreements
Term Gas Supply Derivatives [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Derivative, Notional Amount, in MMBtu     1,249,400,000invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_PriceRiskDerivativeMember 		1,249,400,000invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_PriceRiskDerivativeMember
Term Gas Supply Derivatives [Member] | Minimum [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Derivative, Term of Contract     1 year  
Term Gas Supply Derivatives [Member] | Maximum [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Derivative, Term of Contract     7 years  
Interest Rate Derivatives [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Derivative, Gain (Loss) on Derivative, Net       $ (34,700,000)us-gaap_DerivativeGainLossOnDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember