Stock-Based Compensation Plans (Schedule Of Future Share-Based Compensation Cost) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remainder of 2013	$ 5.2
2014	7.6
2015	6.1
2016	5.5
2017	4.8
Thereafter	12.4
Total	41.6
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remainder of 2013	1.7
2014	2.6
2015	2.1
2016	1.8
2017	1.7
Thereafter	7.3
Total	17.2
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remainder of 2013	3.5
2014	5.0
2015	4.0
2016	3.7
2017	3.1
Thereafter	5.1
Total	$ 24.4

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Employee Service Share Based Compensation Estimated Allocation Of Recognized Period Costs Remainder Of Fiscal Year

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