Commitments and Contingencies - Additional Information (Detail) - Brazil Improbity Action - Brazil R$ in Millions, $ in Millions			6 Months Ended
	Apr. 27, 2018 BRL (R$) Defendant	Apr. 27, 2018 USD ($) Defendant	Jun. 30, 2023
Loss Contingencies [Line Items]
Allegations - description			On April 27, 2018, the Company was added as an additional defendant in a legal proceeding (the “Improbity Action”), initiated by the Brazilian Federal Prosecutor against certain individuals, including an executive of Petrobras and two political lobbyists, in connection with the contracting of the Titanium Explorer drillship to Petrobras under the Government Agreement for the Provision of Drilling Services for the Titanium Explorer, dated February 4, 2009, by and between Petrobras Venezuela Investments & Services, BV and Vantage Deepwater Company (and subsequently novated to Petrobras America, Inc. and Vantage Deepwater Drilling, Inc.), with the Brazilian government and Petrobras as plaintiffs. Vantage is alleged to have been involved in and benefited from the purported bribery scheme at Petrobras through Hamylton Padilha, the Brazilian agent our former parent company, VDC, used in the contracting of the Titanium Explorer drillship to Petrobras, and Mr. Hsin-Chi Su, a former member of VDC’s board of directors and a significant shareholder of VDC. We first became aware of the legal proceeding on July 19, 2018 as it was previously under seal.
Loss contingency, damages claimed	R$ 102.8	$ 21.8
Court authorization to seizure and freezing assets of defendants | $		$ 87.3
Loss contingency, number of defendants | Defendant	3	3
Loss contingency, actions taken by court			On February 13, 2019, we learned that the Brazilian Federal Prosecutor had previously requested mutual legal assistance from the DOJ pursuant to the United Nations Convention against Corruption of 2003 to obtain a freezing order against the Company’s U.S. assets in the amount of approximately $87.3 million.