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Contract with Customers - Contract Cost (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]    
Current deferred mobilization and contract preparation costs $ 17.2 $ 5.7
Non-current deferred mobilization and contract preparation costs 4.4 0.0
Total deferred mobilization and contract preparation asset 21.6 $ 5.7
Increase in deferred mobilization and contract preparation costs 15.9  
Additional deferred contract preparation and mobilization costs 28.5  
Capitalized contract cost, amortization $ 12.6