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Intangible Assets (Schedule Of future amortization expense of intangible assets) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
2014 $ 11.2us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
2015 11.2us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2016 11.1us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2017 5.9us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2018 $ 3.3us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive