XML 89 R74.htm IDEA: XBRL DOCUMENT v3.3.1.900
Goodwill And Intangible Assets (Amortization Expense Of Intangible Assets) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]      
Intangibles amortization expense $ 4 $ 11 $ 14