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Equity Method Investments - Summarized Balance Sheets (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]            
Total current assets $ 341.9   $ 349.9      
Total non-current assets 2,654.2   2,651.8      
Total assets 2,996.1   3,001.7 $ 2,990.5    
Total current liabilities 398.5   745.6      
Total non-current liabilities 1,691.4   1,358.3      
Equity 906.2 $ 904.1 897.8 $ 711.5 $ 873.0 $ 889.9
Total liabilities and equity 2,996.1   3,001.7      
Perfomex            
Schedule of Equity Method Investments [Line Items]            
Cash 9.0   13.2      
Total current assets 210.7   198.0      
Total non-current assets 25.1   28.6      
Total assets 235.8   226.6      
Total current liabilities 191.2   191.6      
Total non-current liabilities 20.1   20.6      
Equity 24.5   14.4      
Total liabilities and equity 235.8   226.6      
Perfomex II            
Schedule of Equity Method Investments [Line Items]            
Cash 0.0   6.6      
Total current assets 42.7   54.8      
Total non-current assets 2.3   4.8      
Total assets 45.0   59.6      
Total current liabilities 34.9   51.6      
Total non-current liabilities 0.4   0.5      
Equity 9.7   7.5      
Total liabilities and equity $ 45.0   $ 59.6