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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2022
Equity [Abstract] |
Components of Accumulated Other Comprehensive Income, Net of Tax | The tables below present the components of the Company's AOCI, net of tax (in millions):
|  | Pension and Other Postretirement Liabilities |  | Investments and Other |  | Deferred Taxes (a) |  | Total
Balance at December 31, 2019 |  | $ | (560) |  |  | $ | 2 |  |  | $ | (160) |  |  | $ | (718) |
Change in value |  | (993) |  |  | — |  |  | 221 |  |  | (772) |
Amounts reclassified to earnings |  | 451 |  | (b) | — |  |  | (100) |  |  | 351 |
Balance at December 31, 2020 |  | (1,102) |  |  | 2 |  |  | (39) |  |  | (1,139) |
Change in value |  | 239 |  |  | (2) |  |  | (53) |  |  | 184 |
Amounts reclassified to earnings |  | 16 |  | (b) | — |  |  | (3) |  |  | 13 |
Balance at December 31, 2021 |  | (847) |  |  | — |  |  | (95) |  |  | (942) |
Change in value |  | 1,474 |  |  | (35) |  |  | (321) |  |  | 1,118 |
Amounts reclassified to earnings |  | (1) |  | (b) | — |  |  | — |  |  | (1) |
Balance at December 31, 2022 |  | $ | 626 |  |  | $ | (35) |  |  | $ | (416) |  |  | $ | 175 |
(a)Includes approximately $285 million of deferred income tax expense that will not be recognized in net income until the related pension and postretirement benefit obligations are fully extinguished. We consider all income sources, including other comprehensive income, in determining the amount of tax benefit allocated to results from operations. (b)This AOCI component is included in the computation of net periodic pension and other postretirement costs. See Note 7 of this report for additional information on pensions and other postretirement liabilities.

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