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Goodwill and Intangible Assets - Schedule of Expected Future Intangible Asset Amortization (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity    
2020 $ 213  
2021 161  
2022 99  
2023 99  
2024 98  
Thereafter 108  
Net Carrying Amount $ 778 $ 825