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Income Taxes (Summary Of Reconciliation Of The Beginning And Ending Amount Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 30, 2021	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Balance, beginning of year	$ 237.7	$ 235.4	$ 237.7	$ 296.7
Decreases in unrecognized tax benefits as a result of tax positions taken during prior years	0.0	(4.5)		(89.3)
Increases in unrecognized tax benefits as a result of tax positions taken during prior years	2.9	33.8		22.4
Lapse of applicable statutes of limitations	(0.2)	(20.2)		(13.2)
Increases in unrecognized tax benefits as a result of tax positions taken during the current year	12.6	6.9		12.8
Impact of foreign currency exchange rates	(17.6)	(10.5)		9.0
Settlements with taxing authorities	0.0	(6.6)		(0.7)
Balance, end of year	$ 235.4	$ 234.3	$ 234.3	$ 237.7

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Amount of unrecognized tax benefits.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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Unrecognized tax benefits foreign currency translation gain (loss) arising during period.

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