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Other Commitments And Contingencies (Restructuring) (Details) - Other Restructuring - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]    
Restructuring Reserve $ 5.9 $ 11.1
Restructuring Reserve, Period Increase (Decrease) 7.2  
Payments for Restructuring (12.4)  
Restructuring Reserve, Accrual Adjustment $ 0.0