Stock-Based Compensation Plans (Schedule Of Future Share-Based Compensation Cost) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2022	$ 37.9
2023	37.1
2024	7.4
2025	2.7
Total	85.1
Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2022	34.4
2023	34.3
2024	5.2
2025	1.2
Total	75.1
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2022	3.5
2023	2.8
2024	2.2
2025	1.5
Total	10.0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2022	0.0
2023	0.0
2024	0.0
2025	0.0
Total	$ 0.0

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Employee Service Share Based Compensation Estimated Allocation Of Recognized Period Costs In Three Years

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Employee Service Share Based Compensation Estimated Allocation Of Recognized Period Costs In Two Years

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Employee Service Share Based Compensation Estimated Allocation Of Recognized Period Costs Next Twelve Months

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Employee Service Share Based Compensation Estimated Allocation Of Recognized Period Costs Total

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