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Income Taxes (Summary Of Components Of Provision For Income Taxes From Continuing Operations) (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]                      
Current income tax expense, U.S.                 $ 31.3 $ (19.9) $ (2.2)
Current income tax expense, Non-U.S.                 73.2 52.9 56.4
Current Income Tax Expense, Total                 104.5 33.0 54.2
Deferred income tax expense (benefit), U.S.                 19.7 52.9 36.0
Deferred income tax expense (benefit), Non-U.S.                 4.2 3.7 19.0
Deferred income tax expense                 23.9 56.6 55.0
Total provision for income taxes $ 62.8 $ 1.5 $ 32.6 $ 31.5 $ 23.2 $ 23.3 $ 24.7 $ 18.4 $ 128.4 $ 89.6 $ 109.2