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Summary of Significant Accounting Policies - Components of Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive loss, net of tax $ 1,179.3 $ 682.2 $ 649.6 $ 597.7
Accumulated other comprehensive loss, net of tax        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive loss, net of tax (95.4) (119.0) $ (111.9) $ (122.6)
Accumulated pension and OPEB liability adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive loss, income tax benefit 2.5 8.9    
Accumulated other comprehensive loss, net of tax (10.9) (14.4)    
Accumulated unrealized loss on derivative instruments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive loss, income tax benefit (12.9) 2.1    
Accumulated other comprehensive loss, net of tax 44.4 (1.9)    
Accumulated unrealized foreign currency translation adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive loss, income tax benefit 17.0 9.5    
Accumulated other comprehensive loss, net of tax $ (128.9) $ (102.7)