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Supplemental Financial Information (Other Liabilities) (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Supplemental Financial Information [Abstract]    
Unrecognized tax benefits (inclusive of interest and penalties) $ 129.7 $ 128.3
Pension and other post-retirement benefits 103.7 106.5
Operating Lease, Liability, Noncurrent 51.9 56.9
Noncurrent contract liabilities (deferred revenue) 61.2 71.4
Other 21.3 20.1
Other liabilities 367.8 383.2
Accrued claims $ 39.3 $ 39.5