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Supplemental Financial Information - Additional Information (Details) - USD ($)
shares in Millions, $ in Millions
Apr. 15, 2021
Feb. 05, 2021
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Condensed Balance Sheet Statements, Captions [Line Items]            
Restricted cash     $ 2.1 $ 2.6    
Capital expenditures incurred but not yet paid   $ 31.0 34.2 36.5 $ 38.6 $ 35.3
Pacific Drilling            
Condensed Balance Sheet Statements, Captions [Line Items]            
Number of shares received by acquiree (in shares) 16.6          
Total consideration $ 357.7          
Net assets acquired $ 420.0          
Secured notes | Second Lien Notes Indenture            
Condensed Balance Sheet Statements, Captions [Line Items]            
Debtor-in-possession financing, amount arranged   216.0        
Debtor-in-possession financing, backstop fee   16.0        
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   $ 200.0        
Finco            
Condensed Balance Sheet Statements, Captions [Line Items]            
Restricted cash     $ 2.1 $ 2.6