v3.26.1
Accumulated Other Comprehensive Loss - Schedule of Components of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance $ 2,990.4 $ 3,176.0 $ 2,683.1 $ 2,682.3 $ 3,176.0 $ 2,682.3
Other comprehensive income (loss) before reclassifications         (36.2) 169.3
Amounts reclassified out from accumulated other comprehensive income (loss)         1.3 0.1
Other comprehensive (loss) income, net of tax (15.2) (19.7) 116.8 52.6 (34.9) 169.4
Ending balance 2,990.2 2,990.4 2,929.1 2,683.1 2,990.2 2,929.1
Total            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance (125.2) (105.5) (205.5) (258.1) (105.5) (258.1)
Other comprehensive (loss) income, net of tax (15.2) (19.7) 116.8 52.6    
Ending balance (140.4) (125.2) (88.7) (205.5) (140.4) (88.7)
Derivatives            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance   (1.5)   (2.5) (1.5) (2.5)
Other comprehensive income (loss) before reclassifications         (2.5) 4.7
Amounts reclassified out from accumulated other comprehensive income (loss)         1.5 0.3
Other comprehensive (loss) income, net of tax         (1.0) 5.0
Ending balance (2.5)   2.5   (2.5) 2.5
Change in equity affiliate investment AOCI            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance   3.2   2.5 3.2 2.5
Other comprehensive income (loss) before reclassifications         (0.1) 0.2
Amounts reclassified out from accumulated other comprehensive income (loss)         0.0 0.0
Other comprehensive (loss) income, net of tax         (0.1) 0.2
Ending balance 3.1   2.7   3.1 2.7
Defined benefit pension and other postretirement plans            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance   (8.1)   (9.8) (8.1) (9.8)
Other comprehensive income (loss) before reclassifications         0.0 (0.9)
Amounts reclassified out from accumulated other comprehensive income (loss)         (0.2) (0.2)
Other comprehensive (loss) income, net of tax         (0.2) (1.1)
Ending balance (8.3)   (10.9)   (8.3) (10.9)
Foreign currency translation            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance   $ (99.1)   $ (248.3) (99.1) (248.3)
Other comprehensive income (loss) before reclassifications         (33.6) 165.3
Amounts reclassified out from accumulated other comprehensive income (loss)         0.0 0.0
Other comprehensive (loss) income, net of tax         (33.6) 165.3
Ending balance $ (132.7)   $ (83.0)   $ (132.7) $ (83.0)