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Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Components of Accumulated Other Comprehensive Loss in the Equity Section of the Balance Sheet | Accumulated other comprehensive loss in the equity section of the balance sheet included:
| Millions of Dollars
| Defined Benefit Plans | Net Unrealized Gain/(Loss) on Securities | Foreign Currency Translation | Accumulated Other Comprehensive Loss
December 31, 2019 | $ | (350) |  | — |  | (5,007) |  | (5,357) |
Other comprehensive income (loss) | (75) |  | 2 |  | 212 |  | 139 |
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) |
Items Reclassified out of Accumulated Other Comprehensive Income (Loss) | The following table summarizes reclassifications out of accumulated other comprehensive loss during the years ended December 31:
| Millions of Dollars
| 2022 | 2021
Defined Benefit Plans | $ | 26 |  | 109 |
Above amounts are included in the computation of net periodic benefit cost and are presented net of tax expense of: | $ | 7 |  | 31 |
See Note 16. |  |

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