Revenue Recognition - Trade Allowance for Credit Losses (Details) - USD ($) $ in Millions |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2021 |
Dec. 31, 2020 |
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| Roll forward of notes and accounts receivable - trade allowance for credit losses | ||
| Allowance for Credit Loss, Beginning Balance | $ 351 | $ 316 |
| Additions / (Releases) | (37) | 76 |
| Write-offs | (15) | (46) |
| Other | 1 | 5 |
| Allowance for Credit Loss, Ending Balance | $ 300 | $ 351 |
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- Definition Amount of other adjustments impacting the allowance for credit loss. 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 (decrease) in allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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