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Restructuring and Acquisition-Related Costs (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Restructuring Reserve [Roll Forward]    
Restructuring reserve $ 11.5 $ 12.2
Charges 16.5 14.7
Cash utilization (21.6) (12.1)
Restructuring reserve 6.4 14.8
Employee Severance [Member]    
Restructuring Reserve [Roll Forward]    
Restructuring reserve 1.7 4.8
Charges 0.5 2.2
Cash utilization (2.2) (6.6)
Restructuring reserve 0.0 0.4
Other Restructuring [Member]    
Restructuring Reserve [Roll Forward]    
Restructuring reserve 9.8 7.4
Charges 16.0 12.5
Cash utilization (19.4) (5.5)
Restructuring reserve $ 6.4 $ 14.4