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Equity - Schedule of Other Comprehensive Income (Loss) Reclassification Adjustments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Other Comprehensive Income (Loss) Reclassification Adjustments |  |  |
Other comprehensive income (loss) | $ 6,105 | $ 5,940 | $ (32,303)
Total |  |  |
Other Comprehensive Income (Loss) Reclassification Adjustments |  |  |
Unrealized change arising during year | (1,413) | 5,681 | (39,179)
Less: Reclassification adjustments included in net income | (7,864) | (1,091) | (1,212)
Total other comprehensive income (loss), before of income tax expense (benefit) | 6,451 | 6,772 | (37,967)
Less: Income tax expense (benefit) | 346 | 832 | (5,664)
Unrealized Appreciation (Depreciation) of Fixed Maturity Securities on Which Allowance for Credit Losses Was Taken |  |  |
Other Comprehensive Income (Loss) Reclassification Adjustments |  |  |
Unrealized change arising during year | 95 | (6) | (112)
Less: Reclassification adjustments included in net income | (42) | (26) | 7
Total other comprehensive income (loss), before of income tax expense (benefit) | 137 | 20 | (119)
Less: Income tax expense (benefit) | 20 | 6 | (25)
Other comprehensive income (loss) | 117 | 14 | (94)
Unrealized Appreciation (Depreciation) of All Other Investments |  |  |
Other Comprehensive Income (Loss) Reclassification Adjustments |  |  |
Unrealized change arising during year | (2,211) | 7,172 | (47,043)
Less: Reclassification adjustments included in net income | (9,132) | (1,036) | (1,189)
Total other comprehensive income (loss), before of income tax expense (benefit) | 6,921 | 8,208 | (45,854)
Less: Income tax expense (benefit) | 70 | 1,074 | (7,446)
Other comprehensive income (loss) | 6,851 | 7,134 | (38,408)
Change in Fair Value of Market Risk Benefits Attributable to Changes in Our Own Credit Risk |  |  |
Other Comprehensive Income (Loss) Reclassification Adjustments |  |  |
Unrealized change arising during year | 130 | (695) | 1,635
Less: Reclassification adjustments included in net income | (330) | 0 |
Total other comprehensive income (loss), before of income tax expense (benefit) | 460 | (695) | 1,635
Less: Income tax expense (benefit) | 28 | (151) | 341
Other comprehensive income (loss) | 432 | (544) | 1,294
Change in the discount rates used to measure traditional and limited payment long-duration insurance contracts |  |  |
Other Comprehensive Income (Loss) Reclassification Adjustments |  |  |
Unrealized change arising during year | 946 | (1,045) | 6,993
Less: Reclassification adjustments included in net income | 1,583 | 0 |
Total other comprehensive income (loss), before of income tax expense (benefit) | (637) | (1,045) | 6,993
Less: Income tax expense (benefit) | 165 | (174) | 1,449
Other comprehensive income (loss) | (802) | (871) | 5,544
Foreign Currency Translation Adjustments |  |  |
Other Comprehensive Income (Loss) Reclassification Adjustments |  |  |
Unrealized change arising during year | (407) | 137 | (593)
Less: Reclassification adjustments included in net income | 88 | 0 |
Total other comprehensive income (loss), before of income tax expense (benefit) | (495) | 137 | (593)
Less: Income tax expense (benefit) | 45 | 35 | 20
Other comprehensive income (loss) | (540) | 102 | (613)
Retirement Plan Liabilities Adjustment |  |  |
Other Comprehensive Income (Loss) Reclassification Adjustments |  |  |
Unrealized change arising during year | 34 | 118 | (53)
Less: Reclassification adjustments included in net income | (31) | (29) | (30)
Total other comprehensive income (loss), before of income tax expense (benefit) | 65 | 147 | (23)
Less: Income tax expense (benefit) | 18 | 42 | (3)
Other comprehensive income (loss) | $ 47 | 105 | (20)
Fair Value of Liabilities Under Fair Value Option Attributable to Changes in Our Own Credit Risk |  |  |
Other Comprehensive Income (Loss) Reclassification Adjustments |  |  |
Unrealized change arising during year |  |  | (6)
Total other comprehensive income (loss), before of income tax expense (benefit) |  |  | (6)
Other comprehensive income (loss) |  | $ 0 | $ (6)

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