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Acquisitions - Additional Information (Details)
shares in Thousands, $ in Thousands
1 Months Ended 3 Months Ended 8 Months Ended 9 Months Ended
Apr. 15, 2021
USD ($)
shares
Jun. 30, 2021
USD ($)
Feb. 05, 2021
USD ($)
Sep. 30, 2021
USD ($)
floater
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
floater
Sep. 30, 2020
USD ($)
Business Acquisition [Line Items]              
Number of floaters acquired | floater       7   7  
Number of floaters sold | floater       2   2  
Merger and integration costs     $ 0 $ 5,033 $ 0 $ 13,786 $ 0
Gain on bargain purchase     $ 0     64,479 $ 0
Pacific Drilling              
Business Acquisition [Line Items]              
Business acquisition, membership interest conversion ratio 6.366            
Business acquisition, warrants conversion ratio 1.553            
Number of shares received by acquiree (in shares) | shares 16,600            
Proceeds from sale of floaters   $ 29,700          
Merger and integration costs       $ 5,000   $ 13,800  
Gain on bargain purchase $ 64,479            
Pacific Drilling | Pacific Drilling | Noble Corp              
Business Acquisition [Line Items]              
Ownership percentage at closing of Merger 24.90%