Supplementary Information - Allowance for Credit Losses (Details) - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2022 |
Dec. 31, 2021 |
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| Allowance for doubtful accounts | ||
| Balance at beginning of year | $ 400 | $ 373 |
| Provision | 69 | 111 |
| Write-offs | (34) | (23) |
| Prior year recoveries | (44) | (39) |
| Other | (50) | (22) |
| Balance at end of year | $ 341 | $ 400 |
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- Definition Allowance for Doubtful Accounts Receivable, Other No definition available.
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- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase in allowance for credit loss on accounts receivable, from recovery. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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