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Consolidated Statement of Stockholders' Equity (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]            
Tax effect on net change in pension asset/liability $ 0.0 $ 0.0 $ 0.1 $ 0.1 $ 0.2 $ 0.2
Net change in fair value of derivative instruments, tax $ 3.9 $ (0.5) $ (0.4) $ 12.0 $ 8.4 $ 1.3