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Supplemental Financial Information (Other Liabilities) (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Supplemental Financial Information [Abstract]    
Unrecognized tax benefits (inclusive of interest and penalties) $ 230.1 $ 275.0
Pension and other post-retirement benefits 158.7 159.8
Other 75.8 80.8
Other liabilities $ 464.6 $ 515.6