v3.25.2
Accumulated Other Comprehensive Loss (Reclassification Out Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Non-operating expenses, net $ 1.3   $ 1.7   $ 2.9 $ 2.1
Tax benefit 47.3   37.7   82.8 74.5
Total reclassifications for the period, net of tax (138.4) $ (101.1) (110.6) $ (105.5) (239.5) (216.1)
Reclassification out of AOCI [Member] | Actuarial Losses Recognized [Member]            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Non-operating expenses, net 2.5   2.3   4.9 3.8
Tax benefit (0.6)   (0.6)   (1.2) (1.0)
Total reclassifications for the period, net of tax $ 1.9   $ 1.7   $ 3.7 $ 2.8