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Goodwill And Other Intangibles (Estimated Future Aggregate Amortization Expense) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]    
2015 $ 88us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths  
2016 78us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo  
2017 75us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree  
2018 73us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour  
2019 72us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive  
Subsequent years 306us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive  
Net Carrying Amount $ 692us-gaap_FiniteLivedIntangibleAssetsNet $ 472us-gaap_FiniteLivedIntangibleAssetsNet