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Supplementary Information - Change in Allowance for Doubtful Accounts (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Segment Reporting [Abstract]      
Balance at beginning of year $ 319 $ 301 $ 255
Additions 54 47 58
Amounts written off (33) (29) (12)
Balance at end of year $ 340 $ 319 $ 301