Annual report pursuant to Section 13 and 15(d)

Net Income (Loss) per Common Unit - Schedule of Net Income (Loss) per Unit and Allocation of Distribution (Details)

v2.4.1.9
Net Income (Loss) per Common Unit - Schedule of Net Income (Loss) per Unit and Allocation of Distribution (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Net loss $ (70,839)us-gaap_NetIncomeLoss $ (43,240)us-gaap_NetIncomeLoss $ (226,224)us-gaap_NetIncomeLoss $ (69,733)us-gaap_NetIncomeLoss $ (61,266)us-gaap_NetIncomeLoss $ (98,108)us-gaap_NetIncomeLoss $ (47,010)us-gaap_NetIncomeLoss $ (51,733)us-gaap_NetIncomeLoss $ (410,036)us-gaap_NetIncomeLoss $ (258,117)us-gaap_NetIncomeLoss $ (175,431)us-gaap_NetIncomeLoss
Declared distributions                 99,015us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared 99,015us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared 61,501us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
Amortization of beneficial conversion feature of Class B units                     0cqp_AmortizationofBeneficialConversionFeatureofClassBUnitsinDollars
Assumed allocation of undistributed net loss                 (509,051)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic (357,132)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic (236,932)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
Weighted average units outstanding                 57,079us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted 54,235us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted 33,470us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
Net income (loss) per unit $ (0.06)us-gaap_EarningsPerShareBasicAndDiluted [1] $ 0.08us-gaap_EarningsPerShareBasicAndDiluted [1] $ (0.85)us-gaap_EarningsPerShareBasicAndDiluted [1] $ (0.06)us-gaap_EarningsPerShareBasicAndDiluted [1] $ (0.01)us-gaap_EarningsPerShareBasicAndDiluted [1] $ (0.20)us-gaap_EarningsPerShareBasicAndDiluted [1] $ 0.11us-gaap_EarningsPerShareBasicAndDiluted [1] $ 0.10us-gaap_EarningsPerShareBasicAndDiluted [1] $ (0.89)us-gaap_EarningsPerShareBasicAndDiluted $ (0.03)us-gaap_EarningsPerShareBasicAndDiluted $ 0.27us-gaap_EarningsPerShareBasicAndDiluted
Net loss attributable to the Creole Trail Pipeline Business                 0cqp_NetIncomeLossAttributabletoPredecessorOperations (18,150)cqp_NetIncomeLossAttributabletoPredecessorOperations (25,295)cqp_NetIncomeLossAttributabletoPredecessorOperations
Creole Trail Pipeline Business [Member]                      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Net loss attributable to the Creole Trail Pipeline Business                 0cqp_NetIncomeLossAttributabletoPredecessorOperations
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember 		(18,150)cqp_NetIncomeLossAttributabletoPredecessorOperations
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember 		(25,295)cqp_NetIncomeLossAttributabletoPredecessorOperations
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
Common Units [Member]                      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Net loss                 (119,175)us-gaap_NetIncomeLoss
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember 		(67,263)us-gaap_NetIncomeLoss
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember 		(28,351)us-gaap_NetIncomeLoss
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember
Declared distributions                 97,036us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember 		97,035us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember 		60,271us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember
Amortization of beneficial conversion feature of Class B units                     (5,149)cqp_AmortizationofBeneficialConversionFeatureofClassBUnitsinDollars
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember
Assumed allocation of undistributed net loss                 (147,952)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember 		(98,522)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember 		(46,061)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember
Assumed allocation of net loss                 (50,916)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember 		(1,487)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember 		9,061us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember
Weighted average units outstanding                 57,079us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember 		54,235us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember 		33,470us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember
Common Units [Member] | Creole Trail Pipeline Business [Member]                      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Assumed allocation of net loss adjusted for the Creole Trail Pipeline Business                   (6,762)cqp_AdjustedParticipatingSecuritiesDistributedandUndistributedEarnings
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember 		3,463cqp_AdjustedParticipatingSecuritiesDistributedandUndistributedEarnings
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember
Net income (loss) per unit, adjusted to include pre-acquisition date net losses of the Creole Trail Pipeline Business                   $ (0.12)cqp_AdjustedEarningsPerShareBasicandDiluted
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember 		$ 0.10cqp_AdjustedEarningsPerShareBasicandDiluted
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= cqp_CommonUnitsMember
Class B Units [Member]                      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Net loss                 0us-gaap_NetIncomeLoss
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		0us-gaap_NetIncomeLoss
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		0us-gaap_NetIncomeLoss
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
Declared distributions                 0us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		0us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		0us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
Amortization of beneficial conversion feature of Class B units                     25,319cqp_AmortizationofBeneficialConversionFeatureofClassBUnitsinDollars
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
Assumed allocation of undistributed net loss                 0us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		0us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		0us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
Assumed allocation of net loss                 0us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		0us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		25,319us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
Weighted average units outstanding                 145,333us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		140,500us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		43,303us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
Net income (loss) per unit                 $ 0.00us-gaap_EarningsPerShareBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		$ 0.00us-gaap_EarningsPerShareBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		$ 0.58us-gaap_EarningsPerShareBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
Class B Units [Member] | Creole Trail Pipeline Business [Member]                      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Assumed allocation of net loss adjusted for the Creole Trail Pipeline Business                   0cqp_AdjustedParticipatingSecuritiesDistributedandUndistributedEarnings
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		25,319cqp_AdjustedParticipatingSecuritiesDistributedandUndistributedEarnings
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
Net income (loss) per unit, adjusted to include pre-acquisition date net losses of the Creole Trail Pipeline Business                   $ 0.00cqp_AdjustedEarningsPerShareBasicandDiluted
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember 		$ 0.58cqp_AdjustedEarningsPerShareBasicandDiluted
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_CapitalUnitClassBMember
Subordinated Units [Member]                      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Net loss                 (282,660)us-gaap_NetIncomeLoss
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		(167,905)us-gaap_NetIncomeLoss
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		(114,678)us-gaap_NetIncomeLoss
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember
Declared distributions                 0us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		0us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		0us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember
Amortization of beneficial conversion feature of Class B units                     (20,170)cqp_AmortizationofBeneficialConversionFeatureofClassBUnitsinDollars
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember
Assumed allocation of undistributed net loss                 (350,918)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		(233,680)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		(157,917)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember
Assumed allocation of net loss                 (350,918)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		(233,680)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		(178,087)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember
Weighted average units outstanding                 135,384us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		135,384us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		135,384us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember
Net income (loss) per unit                 $ (2.59)us-gaap_EarningsPerShareBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		$ (1.73)us-gaap_EarningsPerShareBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		$ (1.32)us-gaap_EarningsPerShareBasicAndDiluted
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember
Subordinated Units [Member] | Creole Trail Pipeline Business [Member]                      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Assumed allocation of net loss adjusted for the Creole Trail Pipeline Business                   (246,192)cqp_AdjustedParticipatingSecuritiesDistributedandUndistributedEarnings
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		(197,278)cqp_AdjustedParticipatingSecuritiesDistributedandUndistributedEarnings
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember
Net income (loss) per unit, adjusted to include pre-acquisition date net losses of the Creole Trail Pipeline Business                   $ (1.82)cqp_AdjustedEarningsPerShareBasicandDiluted
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember 		$ (1.46)cqp_AdjustedEarningsPerShareBasicandDiluted
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= cqp_SubordinatedUnitsMember
General Partner [Member]                      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Net loss                 (8,201)us-gaap_NetIncomeLoss
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember 		(4,799)us-gaap_NetIncomeLoss
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember 		(7,107)us-gaap_NetIncomeLoss
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember
Declared distributions                 1,979us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember 		1,980us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember 		1,230us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember
Assumed allocation of undistributed net loss                 (10,181)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember 		(6,780)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember 		(7,659)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember
Assumed allocation of net loss                 (8,202)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember 		(4,800)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember 		(6,429)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember
General Partner [Member] | Creole Trail Pipeline Business [Member]                      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Assumed allocation of net loss adjusted for the Creole Trail Pipeline Business                   $ (5,163)cqp_AdjustedParticipatingSecuritiesDistributedandUndistributedEarnings
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember 		$ (6,935)cqp_AdjustedParticipatingSecuritiesDistributedandUndistributedEarnings
/ us-gaap_BusinessAcquisitionAxis
= cqp_CreoleTrailPipelineBusinessMember
/ us-gaap_CapitalUnitsByClassAxis
= us-gaap_GeneralPartnerMember
[1] The sum of the quarterly net income (loss) per common unit may not equal the full year amount as the computations of the weighted average common units outstanding for basic and diluted common units outstanding for each quarter and the full year are performed independently.