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Segments - Revenue by Geographic Areas (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue $ 245.3 $ 307.5 $ 334.1
South East Asia      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 99.5 70.6 23.8
Europe      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 75.6 52.6 114.7
Mexico      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 39.5 43.2 50.0
West Africa      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 30.7 108.1 102.4
Middle East      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue $ 0.0 $ 33.0 $ 43.2