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Restructuring, Impairment and Transaction-Related Charges (Schedule of Restructuring Reserves) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]    
Gains on the sale of facilities $ (20.9) $ (2.9)
Other restructuring charges (income) (26.5) 22.0
Restructuring Reserve [Roll Forward]    
Balance, beginning of year 40.9 24.5
Expense, net 18.9 124.1
Cash payments, net (33.0) (44.0)
Non-cash adjustments/reclassifications 28.5 (63.7)
Balance, end of year 55.3 40.9
Facilities Idled    
Restructuring Cost and Reserve [Line Items]    
Vacant facility carrying costs and lease exit charges 19.8 11.5
Equipment and Infrastructure Removal Charges    
Restructuring Cost and Reserve [Line Items]    
Equipment and infrastructure removal costs 1.6 1.1
Sale of facilities    
Restructuring Cost and Reserve [Line Items]    
Gains on the sale of facilities (24.8) (1.6)
Other restructuring charges    
Restructuring Cost and Reserve [Line Items]    
Other restructuring activities (23.1) 11.0
Employee Termination Charges    
Restructuring Reserve [Roll Forward]    
Balance, beginning of year 14.6 9.9
Expense, net 9.9 34.7
Cash payments, net (19.0) (29.7)
Non-cash adjustments/reclassifications (0.8) (0.3)
Balance, end of year 4.7 14.6
Impairment Charges    
Restructuring Reserve [Roll Forward]    
Balance, beginning of year 0.0 0.0
Expense, net 34.9 64.1
Cash payments, net 0.0 0.0
Non-cash adjustments/reclassifications (34.9) (64.1)
Balance, end of year 0.0 0.0
Transaction-Related Charges (Income)    
Restructuring Reserve [Roll Forward]    
Balance, beginning of year 0.5 0.8
Expense, net 0.6 1.4
Cash payments, net (0.7) (1.7)
Non-cash adjustments/reclassifications 0.0 0.0
Balance, end of year 0.4 0.5
Integration Costs    
Restructuring Reserve [Roll Forward]    
Balance, beginning of year 0.0 0.2
Expense, net 0.0 1.9
Cash payments, net 0.0 (2.1)
Non-cash adjustments/reclassifications 0.0 0.0
Balance, end of year 0.0 0.0
Other Restructuring Charges    
Restructuring Reserve [Roll Forward]    
Balance, beginning of year 25.8 13.6
Expense, net (26.5) 22.0
Cash payments, net (13.3) (10.5)
Non-cash adjustments/reclassifications 64.2 0.7
Balance, end of year $ 50.2 $ 25.8