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Restructuring and Other Charges (Income) - Other Charges (Income), Net (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Restructuring and Related Activities [Abstract]    
Environmental charges, net $ (4.1) $ 6.4
Other items, net 1.0 0.4
Other charges (income), net $ (3.1) $ 6.8