v3.26.1
Shareholders' Equity - Schedule of Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance $ 2,855.5 $ 2,848.6 $ 2,785.4 $ 2,890.4
Other comprehensive income before reclassifications, net of tax     35.7  
Reclassifications from accumulated other comprehensive income/loss, net of tax     1.9  
Other comprehensive income 17.1 7.5 37.6 7.4
Ending balance 2,960.0 2,880.2 2,960.0 2,880.2
Accumulated Other Comprehensive Income/Loss        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance 13.0 (42.7) (7.4) (42.5)
Other comprehensive income 17.1 7.5 37.6 7.4
Ending balance 30.2 $ (35.2) 30.2 $ (35.2)
Cash Flow Hedges        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance     0.5  
Other comprehensive income before reclassifications, net of tax     17.9  
Reclassifications from accumulated other comprehensive income/loss, net of tax     1.9  
Other comprehensive income     19.8  
Ending balance 20.3   20.3  
Defined Benefit and Retiree Healthcare Plans        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance     (10.3)  
Other comprehensive income before reclassifications, net of tax     0.0  
Reclassifications from accumulated other comprehensive income/loss, net of tax     (0.0)  
Other comprehensive income     0.0  
Ending balance (10.3)   (10.3)  
Cumulative Translation Adjustment        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance     2.3  
Other comprehensive income before reclassifications, net of tax     17.8  
Reclassifications from accumulated other comprehensive income/loss, net of tax     0.0  
Other comprehensive income     17.8  
Ending balance $ 20.1   $ 20.1