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Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2023
Jun. 30, 2022
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]            
Beginning balance $ 2,776.2 $ 2,684.9 $ 2,326.2 $ 2,335.4 $ 2,684.9 $ 2,335.4
Other comprehensive (loss) income before reclassifications         (3.1) (87.3)
Amounts reclassified out from accumulated other comprehensive (loss) income         2.6 1.0
Other comprehensive (loss) income, net of tax (15.1) 14.6 (63.5) (22.8) (0.5) (86.3)
Ending balance 2,746.7 2,776.2 2,424.4 2,326.2 2,746.7 2,424.4
(Losses) gains on derivatives            
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]            
Beginning balance   0.2   (1.2) 0.2 (1.2)
Other comprehensive (loss) income before reclassifications         (6.5) (2.3)
Amounts reclassified out from accumulated other comprehensive (loss) income         3.5 (0.2)
Other comprehensive (loss) income, net of tax         (3.0) (2.5)
Ending balance (2.8)   (3.7)   (2.8) (3.7)
Change in equity affiliate investment AOCI            
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]            
Beginning balance   1.6   1.5 1.6 1.5
Other comprehensive (loss) income before reclassifications         (0.1) (0.1)
Amounts reclassified out from accumulated other comprehensive (loss) income         0.0 0.0
Other comprehensive (loss) income, net of tax         (0.1) (0.1)
Ending balance 1.5   1.4   1.5 1.4
Defined benefit pension and other postretirement plans            
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]            
Beginning balance   (9.4)   (31.8) (9.4) (31.8)
Other comprehensive (loss) income before reclassifications         (0.5) 1.6
Amounts reclassified out from accumulated other comprehensive (loss) income         (0.9) 1.2
Other comprehensive (loss) income, net of tax         (1.4) 2.8
Ending balance (10.8)   (29.0)   (10.8) (29.0)
Foreign currency translation            
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]            
Beginning balance   (175.4)   (128.1) (175.4) (128.1)
Other comprehensive (loss) income before reclassifications         4.0 (86.5)
Amounts reclassified out from accumulated other comprehensive (loss) income         0.0 0.0
Other comprehensive (loss) income, net of tax         4.0 (86.5)
Ending balance (171.4)   (214.6)   (171.4) (214.6)
Accumulated other comprehensive loss            
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]            
Beginning balance (168.4) (183.0) (182.4) (159.6) (183.0) (159.6)
Other comprehensive (loss) income, net of tax (15.1) 14.6 (63.5) (22.8)    
Ending balance $ (183.5) $ (168.4) $ (245.9) $ (182.4) $ (183.5) $ (245.9)