Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Amortization Expense For The Next Five Fiscal Years) (Details)

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Intangible Assets (Amortization Expense For The Next Five Fiscal Years) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of Intangible Assets $ 117 $ 137 $ 332 $ 462
Remainder of 2018 84   84  
2019 279   279  
2020 213   213  
2021 153   153  
2022 $ 77   $ 77