v3.23.1
Contracts with Customers - Contract Assets and Liabilities (Details)
$ in Millions
Dec. 31, 2022
USD ($)
contract
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Contract with Customer, Asset, after Allowance for Credit Loss, Current [Abstract]      
Accrued revenue $ 57.4 $ 20.2  
Current contract assets 57.4 20.2  
Non-current accrued revenue 3.8 0.0  
Non-current contract assets 3.8 0.0  
Total contract assets 61.2 20.2 $ 20.3
Current contract liability      
Current deferred mobilization, demobilization and contract preparation revenue (57.3) (3.9)  
Non-current contract liability      
Non-current deferred mobilization, demobilization and contract preparation revenue (68.7) (2.5)  
Total contract liability (126.0) (6.4) $ (2.6)
Accrued revenue 57.4 20.2  
Liquidated damages costs, current $ 0.9    
Delayed contracts | contract 2    
Liquidated damages, non current $ 2.3 0.0  
Deferred demobilization revenue      
Contract with Customer, Asset, after Allowance for Credit Loss, Current [Abstract]      
Accrued revenue 0.7    
Non-current accrued revenue 1.5 $ 0.0  
Non-current contract liability      
Accrued revenue 0.7    
Deferred variable rate revenue      
Contract with Customer, Asset, after Allowance for Credit Loss, Current [Abstract]      
Accrued revenue 0.5    
Non-current contract liability      
Accrued revenue $ 0.5