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Accumulated Other Comprehensive (Loss) | 12 Months Ended
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Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Accumulated Other Comprehensive (Loss) | Note 18—Accumulated Other Comprehensive Income (Loss) Accumulated other comprehensive income (loss) in the equity section of the balance sheet included:
| Millions of Dollars
| Defined Benefit Plans | Net Unrealized Holding Gain/(Loss) on Securities | Foreign Currency Translation | Unrealized Gain/(Loss) on Hedging Activities | Accumulated Other Comprehensive Income/(Loss)
December 31, 2020 | $ | (425) |  | 2 |  | (4,795) |  | — |  | (5,218) |
Other comprehensive income (loss) | 394 |  | (2) |  | (124) |  | — |  | 268 |
December 31, 2021 | (31) |  | — |  | (4,919) |  | — |  | (4,950) |
Other comprehensive income (loss) | (417) |  | (11) |  | (622) |  | — |  | (1,050) |
December 31, 2022 | (448) |  | (11) |  | (5,541) |  | — |  | (6,000) |
Other comprehensive income (loss) | 55 |  | 13 |  | 197 |  | 62 |  | 327 |
December 31, 2023 | $ | (393) |  | 2 |  | (5,344) |  | 62 |  | (5,673) |
The following table summarizes reclassifications out of accumulated other comprehensive income (loss) during the years ended December 31:
| Millions of Dollars
| 2023 | 2022
Defined Benefit Plans* | $ | 33 |  | 26 |
*Included in the computation of net periodic benefit cost and are presented net of tax expense of: | $ | 11 |  | 7 |
See Note 16. |  |

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//220/tableOfContent + Details
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