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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parentheticals) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Statement of Comprehensive Income [Abstract]      
Pension plan net loss, tax provision (benefit) $ 12.0 $ (10.8) $ (0.0)
Gain on cash flow hedges, tax (provision) benefit 0.5 (0.0) (0.7)
Unrealized loss on debt securities, tax benefit $ (0.0) $ (0.0) $ (0.0)