Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment (Details)

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Property, Plant and Equipment (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Fixed assets
        
Property, Plant and Equipment [Line Items]        
Depreciation expense $ 0.7 $ 0.9 $ 3.4 $ 2.5
Sabine Pass LNG terminal | LNG terminal costs
        
Property, Plant and Equipment [Line Items]        
Depreciation expense 10.6 10.8 31.8 32.2
Capitalized interest expense 14.0   14.0  
Creole Trail LNG | Natural gas pipeline costs
        
Property, Plant and Equipment [Line Items]        
Depreciation expense $ 3.8 $ 3.7 $ 11.2 $ 11.2