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Receivables (Tables) | 12 Months Ended
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Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items] |
Rollforward of Allowance for Bad Debts | The table below presents a rollforward of our allowance for credit losses for 2021, 2022 and 2023.
Millions of dollars | Balance at Beginning of Period | Provision (a) | Other (b) | Balance at End of Period (c)
Year ended December 31, 2021 | $ | 824 |  | $ | (19) |  | $ | (51) |  | $ | 754 |
Year ended December 31, 2022 | 754 | 2 | (25) |  | 731
Year ended December 31, 2023 | 731 | 22 | (11) |  | 742
(a) | Represents increases to allowance for credit losses charged to costs and expenses, net of recoveries.
(b) | Includes write-offs, balance sheet reclassifications, and other activity.
(c) | The allowance for credit losses in all years is primarily comprised of a full reserve against accounts receivable with our primary customer in Venezuela.

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