Quarterly report pursuant to Section 13 or 15(d)

Unitholders' Equity (Details)

v2.4.1.9
Unitholders' Equity (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended 1 Months Ended
Mar. 31, 2015
Dec. 31, 2012
May 31, 2013
Maximum [Member]      
Other Ownership Interests [Line Items]      
Number of days after quarter end distribution is paid 45 days    
Common Units [Member]      
Other Ownership Interests [Line Items]      
Distributions Per Limited Partnership Unit Outstanding, Basic 0.425us-gaap_DistributionsPerLimitedPartnershipUnitOutstanding
/ us-gaap_CapitalUnitsByClassAxis
= lng_CommonUnitsMember 		   
General Partner [Member] | Minimum [Member]      
Other Ownership Interests [Line Items]      
Distributions entitled by General Partner, Percentage 2.00%lng_DistributionsentitledbyGeneralPartnerPercentage
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember 		   
Incentive Distribution, Quarterly Distribution Additional Target Percentage 15.00%lng_IncentiveDistributionQuarterlyDistributionAdditionalTargetPercentage
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember 		   
General Partner [Member] | Maximum [Member]      
Other Ownership Interests [Line Items]      
Incentive Distribution, Quarterly Distribution Additional Target Percentage 50.00%lng_IncentiveDistributionQuarterlyDistributionAdditionalTargetPercentage
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember 		   
Class B Units [Member]      
Other Ownership Interests [Line Items]      
Partnership Units, Conversion Ratio, Quarterly Compounded Rate 0.035lng_PartnershipUnitsConversionRatioQuarterlyCompoundedRate
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		   
Class B Units [Member] | Maximum [Member]      
Other Ownership Interests [Line Items]      
Expected conversion period of Class B units to common units after substantial completion date of Train 3 90 days    
Blackstone CQP Holdco LP [Member] | Class B Units [Member]      
Other Ownership Interests [Line Items]      
Proceeds from sale of partnership common and general partner units   $ 1,500.0us-gaap_ProceedsFromSaleOfInterestInPartnershipUnit
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= lng_BlackstoneCqpHoldcoLpMember 		 
Partnership Units, Accreted Conversion Ratio 1.44lng_PartnershipUnitsAccretedConversionRatio
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= lng_BlackstoneCqpHoldcoLpMember 		   
Cheniere Energy, Inc. [Member] | Class B Units [Member]      
Other Ownership Interests [Line Items]      
Proceeds from sale of partnership common and general partner units   $ 500.0us-gaap_ProceedsFromSaleOfInterestInPartnershipUnit
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= lng_CheniereEnergyIncMember 		$ 180.0us-gaap_ProceedsFromSaleOfInterestInPartnershipUnit
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= lng_CheniereEnergyIncMember
Sale of common and general partner units, units     12.0us-gaap_PartnersCapitalAccountUnitsSaleOfUnits
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= lng_CheniereEnergyIncMember
Cheniere Energy Partners LP Holdings, LLC [Member] | Class B Units [Member]      
Other Ownership Interests [Line Items]      
Partnership Units, Accreted Conversion Ratio 1.46lng_PartnershipUnitsAccretedConversionRatio
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= lng_CheniereEnergyPartnersLPHoldingsLLCMember