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Pension And Other Postretirement Benefits (Schedule Of Fair Value Of Pension Plan Assets) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]      
Fair value of asset $ (2,795.3)us-gaap_DefinedBenefitPlanFairValueOfPlanAssets $ (2,721.5)us-gaap_DefinedBenefitPlanFairValueOfPlanAssets  
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[1] This class represents pending trades with brokers.
[2] Reflects $48.1 million in December 31, 2013 hedge funds redemptions in which cash has not been received. These hedge fund investments had previously been included as level 3 investments prior to the redemptions.
[3] This class includes limited partnerships/fund of funds that invest in a diverse portfolio of private equity strategies, including buy-outs, venture capital, growth capital, special situations and secondary markets, primarily inside the United States.
[4] This class includes limited partnerships/fund of funds that invest in a diverse portfolio of private equity strategies, including buy-outs, venture capital, growth capital, special situations and secondary markets, primarily in the United States.
[5] This class includes limited partnerships/fund of funds that invest in diverse portfolio of private equity strategies, including buy-outs, venture capital, growth capital, special situations and secondary markets, primarily outside the United States.
[6] This class includes limited partnerships/fund of funds that invest in a diverse portfolio of private equity strategies, including buy-outs, venture capital, growth capital, special situations and secondary markets, primarily outside the United States.