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Supplemental Financial Information - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Supplemental Financial Information [Abstract]          
Allowance for credit losses $ 29   $ 29   $ 24
Provision for other credit losses 7 $ (2) 15 $ 1  
Allowance for credit loss, writeoff $ 4 $ 7 $ 10 $ 21