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Goodwill and Intangible Assets, Net - Schedule of Future Amortization Expense (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Business Combinations [Abstract]    
Remainder of 2021 $ 1  
2022 1  
2023 1  
2024 1  
2025 1  
Thereafter 0  
Total $ 5 $ 6