v2.4.0.8

Related Party Transactions (Details) (USD $) In Millions, unless otherwise specified | 0 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
May 31, 2012 | Dec. 31, 2012 | Feb. 29, 2012 | Oct. 18, 2007 item
Related Party Transactions |  |  |  |
Number of Ultra-Deepwater Floaters |  |  |  | 2
Ownership interest in unconsolidated joint venture (as a percent) |  |  | 50.00% | 50.00%
Issuance of shares in exchange for noncontrolling interest | 8.7 | 8.7 |  |
Final cash payment for settlement of noncontrolling interest |  | $ 72 |  |
TPDI |  |  |  |
Related Party Transactions |  |  |  |
Ownership interest in affiliate (as a percent) |  |  |  | 50.00%
Ownership interest in unconsolidated joint venture (as a percent) | 50.00% |  |  |
Quantum Pacific Management Limited |  |  |  |
Related Party Transactions |  |  |  |
Number of Ultra-Deepwater Floaters |  |  |  | 2

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