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General Information - Additional Information (Detail) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2018 Option | Jul. 02, 2018 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Number of offshore drilling units owned by the Company | 35 |
Number of offshore drilling units under construction | 8 |
Number of options to acquire semi-submersible rig | Option | 1 |
New capital |  | $ 1,080
Unsecured bond obligation |  | 2,400
Unsecured interest rate and currency swaps |  | 250
Post emergence cash |  | 2,100
Outstanding debt principal |  | $ 7,600

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