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Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance as of January 1	$ 316.4	$ 328.2	$ 388.5
Additions based on tax positions related to the current year	8.5	10.2	20.2
Additions for tax positions of prior years	2.7	9.6	3.2
Reductions for tax positions of prior years	(9.5)	(5.1)	(10.8)
Reductions resulting from the lapse of statutes of limitations	(5.5)	(0.3)	0.0
Settlements with taxing authorities	(32.3)	(26.2)	(72.9)
Balance as of December 31	$ 280.3	$ 316.4	$ 328.2

X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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