v3.10.0.1
Goodwill and Intangible Assets - Intangible Asset Amortization Expense, Fiscal Year Maturity (Details) - USD ($)
$ in Millions
Sep. 30, 2018
Dec. 31, 2017
Fiscal year:    
Remaining 2018 $ 14  
2019 49  
2020 34  
2021 9  
Intangible Assets, Net $ 106 $ 69