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Equity Method Investment in ARO Equity Method Investment In ARO Narrative (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2024
USD ($)
rigs
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2024
drillship
Dec. 31, 2024
jackup
Dec. 31, 2024
Dec. 31, 2024
USD ($)
Sep. 30, 2022
USD ($)
Jan. 31, 2020
rigs
Schedule of Equity Method Investments [Line Items]                  
Total number of contract drilling rigs 53                
Number of jackups leased by ARO 7                
Contract terms on purchased rigs 15 years                
Number of newbuild jackup rigs                 2
Order Period 10 years                
Minimum renewal contract terms for newbuild rigs 8 years                
Basis spread on variable rate 2.10%                
Shareholder Notes Payable, Term 10 years                
ARO Rigs Under Construction       3 1        
Number of ARO Rigs expected to be ordered in the near term | jackup         1        
ARO                  
Schedule of Equity Method Investments [Line Items]                  
Total number of contract drilling rigs 9                
ARO | 10 years                  
Schedule of Equity Method Investments [Line Items]                  
Number of newbuild jackup rigs 20                
ARO                  
Schedule of Equity Method Investments [Line Items]                  
Early Repayment of Principal from Joint Venture Non Current | $               $ 40.0  
ARO                  
Schedule of Equity Method Investments [Line Items]                  
Lease Revenue From Related Party | $ $ 52.6 $ 69.2 $ 56.7            
ARO | Net Settlement Agreement                  
Schedule of Equity Method Investments [Line Items]                  
ARO Net Settlement Amount Reduction of Accounts Payable and Note Receivable Amount | $             $ 50.7    
ARO                  
Schedule of Equity Method Investments [Line Items]                  
Ownership percentage           50.00%