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Contingencies (Details) - USD ($)
$ in Millions
1 Months Ended
Jun. 30, 2019
Jan. 31, 2017
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Loss Contingencies [Line Items]            
Accrual of loss contingency     $ 146.0      
Estimate of possible loss     50.0      
Payments for settlements $ 48.8          
Unrecognized tax benefits     149.0 $ 108.0 $ 94.0 $ 71.0
Invoicing Matter            
Loss Contingencies [Line Items]            
Amount awarded to other party $ 5.5 $ 40.0        
Legal Reserve | Invoicing Matter            
Loss Contingencies [Line Items]            
Estimate of possible loss     $ 380.0