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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Deferred Taxes |  |
Balance beginning | $ (347) | $ (416)
Changes in value | 0 | (4)
Amounts reclassified to earnings | 5 | 7
Balance ending | (342) | (413)
Total |  |
Balance beginning | 9,324 | 6,896
Changes in value | 1 | 14
Amounts reclassified to earnings | (20) | (28)
Balance ending | 9,188 | 6,668
Accumulated Other Comprehensive Income (Loss) |  |
Total |  |
Balance beginning | (62) | 175
Balance ending | (81) | 161
Deferred income tax expense | 285 | 285
Pension and Other Postretirement Liabilities |  |
Before Tax |  |
Balance beginning | 289 | 626
Changes in value | 3 | (9)
Amounts reclassified to earnings | (25) | (35)
Balance ending | 267 | 582
Investments and Other |  |
Before Tax |  |
Balance beginning | (4) | (35)
Changes in value | (2) | 27
Amounts reclassified to earnings | 0 | 0
Balance ending | $ (6) | $ (8)

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