Stock-Based Compensation Plans (Schedule Of Future Share-Based Compensation Cost) (Details) $ in Millions	Dec. 31, 2023 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2024	$ 39.2
2025	10.2
2026	4.4
2027	0.1
Total	53.9
Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2024	33.4
2025	5.2
2026	1.2
2027	0.0
Total	39.8
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2024	5.8
2025	5.0
2026	3.2
2027	0.1
Total	$ 14.1

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details