Supplemental Financial Information - Additional Information (Details) - USD ($) shares in Thousands, $ in Thousands	Apr. 15, 2021	Sep. 30, 2021	Feb. 05, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Condensed Balance Sheet Statements, Captions [Line Items]
Restricted cash		$ 7,400	$ 2,000	$ 21,700
Capital expenditures incurred but not yet paid		30,400	31,000	35,300	$ 26,400	$ 36,000
Pacific Drilling
Condensed Balance Sheet Statements, Captions [Line Items]
Number of shares received by acquiree (in shares)	16,600
Total consideration	$ 357,662
Net assets acquired	$ 422,141
Participants In The Rights Offering | Ordinary Shares
Condensed Balance Sheet Statements, Captions [Line Items]
Plan of reorganization, shares issued, subscription price			200,000
Participants In The Rights Offering | Second Lien Notes Indenture | Ordinary Shares
Condensed Balance Sheet Statements, Captions [Line Items]
Plan of reorganization, shares issued, subscription price			200,000
Finco
Condensed Balance Sheet Statements, Captions [Line Items]
Restricted cash		$ 7,400	$ 2,000	$ 1,700