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Restructuring, Impairment and Transaction-Related Charges (Schedule of Restructuring Costs) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Restructuring and Related Activities [Abstract]    
Employee termination charges $ 9.9 $ 34.7
Impairment charges 34.9 64.1
Transaction-related charges 0.6 1.4
Integration costs 0.0 1.9
Other restructuring charges (26.5) 22.0
Total 18.9 $ 124.1
Equity Method Investment, Other than Temporary Impairment $ 32.1