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Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Changes in Accumulated Other Comprehensive Income (Loss) by Component |  |  |  |  |  |  |  |
Balance at beginning of period | $ 75,111 | $ 74,150 | $ 76,636 | $ 73,002 | $ 71,580 | $ 71,769 | $ 76,636 | $ 71,769
Other comprehensive income (loss) | 528 | 22 | (44) | (146) | 17 | 389 | 506 | 260
Balance at end of period | 75,106 | 75,111 | 74,150 | 74,510 | 73,002 | 71,580 | 75,106 | 74,510
AOCI Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |
Changes in Accumulated Other Comprehensive Income (Loss) by Component |  |  |  |  |  |  |  |
Balance at beginning of period | (319) |  | (297) | (858) |  | (1,264) | (297) | (1,264)
Balance at end of period | 209 | (319) |  | (1,004) | (858) |  | 209 | (1,004)
Net unrealized investment gains (losses): |  |  |  |  |  |  |  |
Changes in Accumulated Other Comprehensive Income (Loss) by Component |  |  |  |  |  |  |  |
Balance at beginning of period | (564) |  | (429) | (1,113) |  | (1,519) | (429) | (1,519)
Other comprehensive income (loss) before reclassifications, net of tax | 647 |  |  | (478) |  |  | 382 | (313)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax | 32 |  |  | 157 |  |  | 162 | 398
Other comprehensive income (loss) | 679 |  |  | (321) |  |  | 544 | 85
Balance at end of period | 115 | (564) |  | (1,434) | (1,113) |  | 115 | (1,434)
Other comprehensive income (loss) before reclassifications, pretax | 710 |  |  | (475) |  |  | 427 | (310)
Amounts reclassified from accumulated other comprehensive income (loss), pretax | 36 |  |  | 157 |  |  | 184 | 398
Change in discount rate on long-duration insurance reserves: |  |  |  |  |  |  |  |
Changes in Accumulated Other Comprehensive Income (Loss) by Component |  |  |  |  |  |  |  |
Balance at beginning of period | 273 |  | 152 | 205 |  | 219 | 152 | 219
Other comprehensive income (loss) before reclassifications, net of tax | (147) |  |  | 181 |  |  | (26) | 167
Other comprehensive income (loss) | (147) |  |  | 181 |  |  | (26) | 167
Balance at end of period | 126 | 273 |  | 386 | 205 |  | 126 | 386
Other comprehensive income (loss) before reclassifications, pretax | (189) |  |  | 233 |  |  | (33) | 210
Foreign currency translation adjustments: |  |  |  |  |  |  |  |
Changes in Accumulated Other Comprehensive Income (Loss) by Component |  |  |  |  |  |  |  |
Balance at beginning of period | 0 |  | 0 | 1 |  | 0 | 0 | 0
Other comprehensive income (loss) before reclassifications, net of tax | 0 |  |  | (2) |  |  | 0 | (1)
Other comprehensive income (loss) | 0 |  |  | (2) |  |  | 0 | (1)
Balance at end of period | 0 | 0 |  | (1) | 1 |  | 0 | (1)
Net cash flow hedges: |  |  |  |  |  |  |  |
Changes in Accumulated Other Comprehensive Income (Loss) by Component |  |  |  |  |  |  |  |
Balance at beginning of period | 236 |  | 244 | 252 |  | 239 | 244 | 239
Other comprehensive income (loss) before reclassifications, net of tax | 0 |  |  | 0 |  |  | 0 | 19
Amounts reclassified from accumulated other comprehensive income (loss), net of tax | (4) |  |  | (4) |  |  | (12) | (10)
Other comprehensive income (loss) | (4) |  |  | (4) |  |  | (12) | 9
Balance at end of period | 232 | 236 |  | 248 | 252 |  | 232 | 248
Other comprehensive income (loss) before reclassifications, pretax | 0 |  |  | 0 |  |  | 0 | 25
Amounts reclassified from accumulated other comprehensive income (loss), pretax | (6) |  |  | (5) |  |  | (16) | (13)
Gains expected to be reclassified | 16 |  |  |  |  |  | 16 |
Pension and other postretirement benefits: |  |  |  |  |  |  |  |
Changes in Accumulated Other Comprehensive Income (Loss) by Component |  |  |  |  |  |  |  |
Balance at beginning of period | (264) |  | $ (264) | (203) |  | $ (203) | (264) | (203)
Other comprehensive income (loss) | 0 |  |  | 0 |  |  | 0 | 0
Balance at end of period | $ (264) | $ (264) |  | $ (203) | $ (203) |  | $ (264) | $ (203)

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