v3.25.2
Equity (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Accumulated Other Comprehensive Loss Roll Forward                
Beginning balance     $ (331.6) $ (261.5)        
Other comprehensive income (loss) before reclassifications     124.8 (30.8)        
Amounts reclassified from accumulated other comprehensive loss     1.2 2.0        
Tax benefit     1.3 (0.3)        
Ending balance $ (204.3) $ (290.6) (204.3) (290.6)        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 1,786.5 1,425.3 1,786.5 1,425.3 $ 1,606.9 $ 1,500.7 $ 1,350.9 $ 1,318.3
Defined benefit items                
Accumulated Other Comprehensive Loss Roll Forward                
Other comprehensive income (loss) before reclassifications     (9.4) 0.8        
Amounts reclassified from accumulated other comprehensive loss     2.4 2.3        
Tax benefit     0.6 (0.1)        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (129.5) (122.9) (129.5) (122.9)   (123.1)   (125.9)
Foreign currency items                
Accumulated Other Comprehensive Loss Roll Forward                
Other comprehensive income (loss) before reclassifications 96.8 (6.2) 135.9 (32.5)        
Amounts reclassified from accumulated other comprehensive loss     0.0 0.0        
Tax benefit     0.0 0.0        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (79.5) (173.7) (79.5) (173.7)   (215.4)   (141.2)
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest                
Accumulated Other Comprehensive Loss Roll Forward                
Other comprehensive income (loss) before reclassifications     (1.7) 0.9        
Amounts reclassified from accumulated other comprehensive loss     (1.2) (0.3)        
Tax benefit     0.7 (0.2)        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 4.7 $ 6.0 $ 4.7 $ 6.0   $ 6.9   $ 5.6