| 
           Leases (Details) (USD $) 
         | 
        1 Months Ended | 12 Months Ended | 1 Months Ended | 1 Months Ended | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
           Jan. 31, 2008
 
          term 
         | 
        
           Dec. 31, 2012 
         | 
        
           Dec. 31, 2011 
         | 
        
           Dec. 31, 2010 
         | 
        
           Dec. 31, 2012
 
          Houston office lease [Member] 
         | 
        
           Dec. 31, 2012
 
          Tug boat [Member] 
         | 
        
           Dec. 31, 2012
 
          Land [Member] 
         | 
        
           Dec. 31, 2011
 
          Land [Member] 
         | 
        
           Dec. 31, 2010
 
          Land [Member] 
         | 
        
           Feb. 28, 2005
 
          Land [Member]
 
          Sabine Pass LNG, LP [Member]
 
          acre
 
          lease_extension 
         | 
        
           Jan. 31, 2005
 
          Land [Member]
 
          Sabine Pass LNG, LP [Member]
 
          lease
 
          lease_extension 
         | 
        
           Dec. 31, 2012
 
          Land [Member]
 
          Sabine Pass LNG, LP [Member] 
         | 
        
           Jul. 31, 2012
 
          Land [Member]
 
          Sabine Pass LNG, LP [Member]
 
          acre 
         | 
        
           Dec. 31, 2011
 
          Land [Member]
 
          Sabine Pass Liquefaction [Member]
 
          acre
 
          lease_extension 
         | 
        
           Nov. 30, 2011
 
          Land [Member]
 
          Sabine Pass Liquefaction [Member]
 
          lease_extension
 
          acre 
         | 
      ||||||||
| Operating Leased Assets [Line Items] | ||||||||||||||||||||||
| Operating lease rental expense | $ 12,900,000 | $ 11,500,000 | $ 10,200,000 | $ 2,300,000 | $ 1,800,000 | $ 1,700,000 | $ 1,500,000 | $ 257,800 | $ 138,000 | |||||||||||||
| Operating Leases, Future Minimum Payments Due [Abstract] | ||||||||||||||||||||||
| 2012 | 14,411,000 | [1],[2] | ||||||||||||||||||||
| 2013 | 12,863,000 | [1],[2] | ||||||||||||||||||||
| 2014 | 12,900,000 | [1],[2] | ||||||||||||||||||||
| 2015 | 12,937,000 | [1],[2] | ||||||||||||||||||||
| 2016 | 11,643,000 | [1],[2] | ||||||||||||||||||||
| Thereafter (1) | 250,684,000 | [1],[2],[3] | ||||||||||||||||||||
| Total | 315,438,000 | [1],[2] | ||||||||||||||||||||
| Houston office contingent sublease revenue | 700,000 | |||||||||||||||||||||
| Lease payment obligations offset | $ 75,200,000 | |||||||||||||||||||||
| Tug Boat Agreement, Term Of Agreement | 10 years | |||||||||||||||||||||
| Number of Tug Boat Agreement term-renewals available | 2 | |||||||||||||||||||||
| Number of Land Leases | 3 | |||||||||||||||||||||
| Initial Term of Lease | 30 years | 30 years | 5 years | |||||||||||||||||||
| Number of available lease extensions | 6 | 6 | 5 | |||||||||||||||||||
| Term of available extension | 10 years | 10 years | 1 year | |||||||||||||||||||
| Acreage under lease | 853 | 0 | 80.6 | 80.7 | ||||||||||||||||||
| Lease adjustment period due to inflation | 5 years | |||||||||||||||||||||
          
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