Stock-Based Compensation Plans (Schedule Of Future Share-Based Compensation Cost) (Details) $ in Millions	Dec. 31, 2018 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2019	$ 6.4
2020	3.6
2021	1.4
2022	0.9
2023	0.7
Thereafter	1.0
Total	14.0
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2019	4.6
2020	2.3
2021	0.5
2022	0.1
2023	0.0
Thereafter	0.0
Total	7.5
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2019	1.8
2020	1.3
2021	0.9
2022	0.8
2023	0.7
Thereafter	1.0
Total	$ 6.5

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

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

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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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