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Other Comprehensive Income - Changes in Components of Other Comprehensive (Loss) Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Pre-tax $ 18.3 $ (19.7) $ 25.2 $ 10.1
Tax (3.8) 11.5 (3.2) 12.4
Other comprehensive income (loss) 14.5 (8.2) 22.0 22.5
Pension and OPEB liability adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Pre-tax 0.0 1.5 1.2 2.8
Tax 0.0 1.1 (0.7) (0.9)
Other comprehensive income (loss) 0.0 2.6 0.5 1.9
Derivative instrument adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Pre-tax 15.1 12.5 1.0 34.9
Tax (3.8) (3.5) (1.1) (3.2)
Other comprehensive income (loss) 11.3 9.0 (0.1) 31.7
Unrealized foreign currency translation adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Pre-tax 3.2 (33.7) 23.0 (27.6)
Tax 0.0 13.9 (1.4) 16.5
Other comprehensive income (loss) $ 3.2 $ (19.8) $ 21.6 $ (11.1)