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Income Taxes (Reconciliation Of Gross Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Gross unrecognized tax benefits at January 1	$ 16.0	$ 23.7
Increases in tax positions for prior years	0.1	0.1
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	0.0	(1.3)
Increases in tax positions for current year	1.4	1.1
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	0.0	(1.2)
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	(2.4)	(6.4)
Gross unrecognized tax benefits at December 31	$ 15.1	$ 16.0

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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
-Paragraph 10B
-URI https://asc.fasb.org/extlink&oid=123427490&loc=SL37586934-109318

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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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-SubTopic 10
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