Quarterly report pursuant to Section 13 or 15(d)

Unitholders' Equity (Details)

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Unitholders' Equity (Details)
$ / shares in Units, shares in Millions, $ in Millions
 1 Months Ended 9 Months Ended 12 Months Ended
May. 31, 2013
USD ($)
shares
Sep. 30, 2015
Rate
$ / shares
Dec. 31, 2012
USD ($)
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 | $ / shares   $ 0.425  
General Partner [Member] | Minimum [Member]      
Other Ownership Interests [Line Items]      
Distributions entitled by General Partner, Percentage   2.00%  
Incentive Distribution, Quarterly Distribution Additional Target Percentage   15.00%  
General Partner [Member] | Maximum [Member]      
Other Ownership Interests [Line Items]      
Incentive Distribution, Quarterly Distribution Additional Target Percentage   50.00%  
Class B Units [Member]      
Other Ownership Interests [Line Items]      
Partnership Units, Conversion Ratio, Quarterly Compounded Rate   0.035  
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 [Member] | Class B Units [Member]      
Other Ownership Interests [Line Items]      
Proceeds from sale of partnership common and general partner units     $ 1,500.0
Partnership Units, Accreted Conversion Ratio | Rate   1.54  
Cheniere [Member] | Class B Units [Member]      
Other Ownership Interests [Line Items]      
Proceeds from sale of partnership common and general partner units $ 180.0   $ 500.0
Sale of common and general partner units, units | shares 12.0    
Cheniere Holdings [Member] | Class B Units [Member]      
Other Ownership Interests [Line Items]      
Partnership Units, Accreted Conversion Ratio | Rate   1.57