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Financial Instruments And Fair Value Measurements (Nonfinancial Assets Measured on a Nonrecurring Basis) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Continuing Operations [Member] | Reported Value Measurement [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets held for sale $ 72.9   $ 53.3
Discontinued Operations [Member] | Reported Value Measurement [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets held for sale in discontinued operations 1.1   $ 1.1
Fair Value, Nonrecurring [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Gain/(Loss) on right-of-use assets 0.0 $ (0.1)  
Gain/(Loss) on assets held and used (0.4) (0.9)  
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Right-of-use assets 0.0 0.0  
Long-lived assets held and used $ 0.0 $ 6.0