| 
           Debt and Debt-Related Parties Senior Notes (Details) (USD $) 
        In Millions, unless otherwise specified  | 
        12 Months Ended | 12 Months Ended | 1 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 
           Dec. 31, 2011 
         | 
        
           Dec. 31, 2011
 
          Senior Notes [Member] 
         | 
        
           Dec. 31, 2010
 
          Senior Notes [Member] 
         | 
        
           Dec. 31, 2011
 
          Sabine Pass LNG, LP [Member]
 
          Senior Notes [Member] 
         | 
        
           Nov. 30, 2006
 
          Sabine Pass LNG, LP [Member]
 
          2016 Senior Notes [Member] 
         | 
        
           Dec. 31, 2011
 
          Sabine Pass LNG, LP [Member]
 
          Senior Notes [Member] 
         | 
        
           Dec. 31, 2011
 
          Sabine Pass LNG, LP [Member]
 
          Senior Notes [Member] 
         | 
        
           Nov. 30, 2006
 
          Sabine Pass LNG, LP [Member]
 
          Senior Notes [Member] 
         | 
        
           Nov. 30, 2006
 
          Sabine Pass LNG, LP [Member]
 
          Senior Notes [Member]
 
          2013 Senior Notes [Member] 
         | 
        
           Sep. 30, 2008
 
          Sabine Pass LNG, LP [Member]
 
          Senior Notes [Member]
 
          2016 Senior Notes [Member] 
         | 
        
           Nov. 30, 2006
 
          Sabine Pass LNG, LP [Member]
 
          Senior Notes [Member]
 
          2016 Senior Notes [Member] 
         | 
      |
| Debt Instrument [Line Items] | |||||||||||
| Debt Instrument, Face Amount | $ 2,215.5 | $ 2,215.5 | $ 2,032.0 | $ 550.0 | $ 1,482.0 | ||||||
| Debt Instrument, Interest Rate, Stated Percentage | 7.25% | 7.50% | |||||||||
| Debt Instrument, Increase, Additional Borrowings | 183.5 | ||||||||||
| Redemption of Debt Instrument, Percentage | 100.00% | ||||||||||
| Percentage of debt principal | 1.00% | ||||||||||
| Debt Instrument, Basis Spread on Variable Rate | 0.50% | ||||||||||
| Debt Instrument, Deposit Requirement, Percentage | 0.16667% | ||||||||||
| Restricted Cash and Cash Equivalents | 82.4 | ||||||||||
| Debt Instrument, Fixed Charge, Coverage Ratio | 2 | 2 | |||||||||
| Distribution Made to Member or Limited Partner, Cash Distributions Paid | $ 313.6 | $ 374.8 | |||||||||