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Income Taxes (Summary Of Reconciliation Of The Beginning And Ending Amount Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Balance, beginning of year	$ 143.0	$ 147.6
Increases in unrecognized tax benefits as a result of tax positions taken during the current year	17.8	6.5
Impact of foreign currency exchange rates	(0.3)	(5.0)
Lapse of applicable statutes of limitations	(4.4)	(4.5)
Increases in unrecognized tax benefits as a result of tax positions taken during prior years	1.1	2.5
Decreases in unrecognized tax benefits as a result of tax positions taken during prior years	(2.4)	(3.8)
Settlements with taxing authorities	(8.0)	(0.3)
Increases in unrecognized tax benefits as a result of Atwood acquisition	149.9	0.0
Balance, end of year	$ 296.7	$ 143.0

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