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Related Party Transactions | 12 Months Ended
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Dec. 31, 2023
Related Party Transactions [Abstract] |
Related Party Transactions | Note 21—Related Party Transactions Our related parties primarily include equity method investments and certain trusts for the benefit of employees. For disclosures on trusts for the benefit of employees, see Note 16. Significant transactions with our equity affiliates were:
| Millions of Dollars
| 2023 | 2022 | 2021
Operating revenues and other income | $ | 90 |  | 88 |  | 88 |
Purchases | — |  | 1 |  | 5 |
Operating expenses and selling, general and administrative expenses | 282 |  | 189 |  | 196 |
Net interest (income)/loss* | — |  | (1) |  | (2) |
*We paid interest to, or received interest from, various affiliates. See Note 4, for additional information on loans to affiliated companies.

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