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Revenue - Summary of Recognition Contract Liabilities (Details)
$ in Millions
9 Months Ended
Sep. 30, 2020
USD ($)
[1]
Revenue from Contract with Customer [Abstract]  
2020 $ 17
2021 7
2022 6
2023 6
2024 and After $ 8
[1] Deferred revenues includes deferred revenue—affiliated companies. This amount is included in Other current liabilities and Other long-term liabilities.