Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments - Fair Value of Derivative Instruments by Balance Sheet Location (Details)

v2.4.0.8
Financial Instruments - Fair Value of Derivative Instruments by Balance Sheet Location (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Interest Rate Contract [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net $ 15,059 $ 84,639
LNG Inventory Derivatives [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net (219) (171)
LNG Inventory Derivatives [Member] | Prepaid Expenses And Other [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net (219) (171)
Fuel Derivatives [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net (144) 126
Fuel Derivatives [Member] | Prepaid Expenses And Other [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net (144) 126
Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Noncurrent Derivative Assets [Member]
   
Derivatives, Fair Value [Line Items]    
Interest Rate Derivative Assets, at Fair Value 32,161 98,123
Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Other Current Liabilities [Member]
   
Derivatives, Fair Value [Line Items]    
Interest Rate Derivative Liabilities, at Fair Value $ (17,102) $ (13,484)