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Goodwill and Intangible Assets (Schedule Of Expected Annual Amortization Expense Related To Intangible Assets For The Next Five Years) (Details)
$ in Millions
Mar. 31, 2017
USD ($)
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]  
Remaining 2017 $ 11.4
2018 14.3
2019 12.6
2020 10.7
2021 8.5
Thereafter $ 8.8