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Goodwill And Intangible Assets (Expected Amortization Expense Of Intangibles) (Details)
$ in Millions
Dec. 31, 2015
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2016 $ 3
2017 3
2018 3
2019 3
2020 1
Beyond 2020 $ 11