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Benefit Plans, Amounts Recognized in Consolidated Balance Sheet (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Amounts recognized in Balance Sheet [Abstract]    
Current liability $ (57.9) $ (60.3)
Non-current liability (114.3) (179.0)
Pension Benefits [Member]    
Amounts recognized in Balance Sheet [Abstract]    
Current liability (1.4) (1.4)
Non-current liability (112.2) (174.7)
Recognized liability (113.6) (176.1)
Post-Retirement Benefits [Member]    
Amounts recognized in Balance Sheet [Abstract]    
Current liability (0.2) (0.3)
Non-current liability (2.1) (4.3)
Recognized liability $ (2.3) $ (4.6)