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Supplementary Information - Accounts Receivable, Net (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Supplementary Information    
Accounts receivable - trade $ 950 $ 855
Accounts receivable - other 193 170
Allowance for doubtful accounts (13) (14)
Total accounts receivable $ 1,130 $ 1,011