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 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of Intangible Assets $ 106 $ 163 $ 215 $ 325
Remainder of 2018 196   196  
2019 264   264  
2020 197   197  
2021 141   141  
2022 $ 76   $ 76