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Intangible Assets, Net - Future Amortization Schedule (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Definite-lived intangible assets, future amortization expense disclosure    
2020 $ 75  
2021 11  
2022 7  
2023 2  
2024 1  
Thereafter 2  
Net carrying amount, definite-lived intangible assets $ 98 $ 302