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Segment Reporting (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Ras Laffan Liquefied Natural Gas Company Ltd. [Member] |  |  |
Revenues and percentage of consolidated voyage revenues from customers |  |  |
Voyage revenues from major customers | $ 68.8 | $ 68.7 | $ 68.7
Percentage of Voyage revenues from major customers | 18.00% | 18.00% | 20.00%
Repsol YPF, S.A. [Member] |  |  |
Revenues and percentage of consolidated voyage revenues from customers |  |  |
Voyage revenues from major customers | 53.9 | 51.9 | 51.5
Percentage of Voyage revenues from major customers | 14.00% | 14.00% | 15.00%
Compania Espanola de Petroleos [Member] |  |  |
Revenues and percentage of consolidated voyage revenues from customers |  |  |
Voyage revenues from major customers | 44.4 | 44.0 | 44.5
Percentage of Voyage revenues from major customers | 12.00% | 12.00% | 13.00%
The Tangguh Production Sharing Contractors [Member] |  |  |
Revenues and percentage of consolidated voyage revenues from customers |  |  |
Voyage revenues from major customers | 43.7 | 44.0 |
Percentage of Voyage revenues from major customers | 12.00% | 11.00% |
Percentage of Voyage revenues from major customers |  |  | less than 10%
Teekay Corporation [Member] |  |  |
Revenues and percentage of consolidated voyage revenues from customers |  |  |
Voyage revenues from major customers |  | $ 36.5 | $ 38.9
Percentage of Voyage revenues from major customers |  | 10.00% | 11.00%
Percentage of Voyage revenues from major customers | less than 10% |  |

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