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Shareholders' Equity - Progression of the components of accumulated other comprehensive income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
AOCI beginning balance | $ (319) |  |
Other comprehensive income (loss), pretax | 104 | $ 283 | $ (839)
Other comprehensive income (loss), tax | (25) | (59) | 177
Other comprehensive income (loss) | 79 | 224 | (662)
AOCI ending balance | (240) | (319) |
Net unrealized gains (losses) on securities: |  |  |
Unrealized holding gains (losses) on securities arising during the period, pretax | 77 | 224 | (821)
Unrealized holding gains (losses) on securities arising during the period, tax | (16) | (48) | 174
Unrealized holding gains (losses) on securities arising during the period, after tax | (61) | (176) | 647
Reclassification adjustment for realized (gains) losses included in net earnings, pretax | 31 | 43 | 18
Reclassification adjustment for realized (gains) losses included in net earnings, tax | (7) | (9) | (4)
Reclassification adjustment for realized (gains) losses included in net earnings, after tax | 24 | 34 | 14
Total net unrealized gains (losses) on securities, pretax | 108 | 267 | (803)
Total net unrealized gains (losses) on securities, tax | (23) | (57) | 170
Total net unrealized gains (losses) on securities | 85 | 210 | (633)
Reclassification of Cash Flow Hedge Gain (Loss) [Abstract] |  |  |
Unrealized holding gains (losses) on cash flow hedges arising during the period, pretax | (16) | (11) | (37)
Unrealized holding gains (losses) on cash flow hedges arising during the period, tax | 4 | 2 | 8
Unrealized holding gains (losses) on cash flow hedges arising during the period, after tax | (12) | (9) | (29)
Reclassification adjustment for investment income included in net earnings from, pretax | 24 | 26 | 0
Reclassification adjustment for investment income included in net earnings, tax | (5) | (5) | 0
Reclassification adjustment for investment income included in net earnings from discontinued operations, after tax | 19 | 21 | 0
Total net unrealized gains (losses) on cash flow hedges, pretax | 8 | 15 | (37)
Total net unrealized gains (losses) on cash flow hedges, tax | (1) | (3) | 8
Total net unrealized gains (losses) on cash flow hedges | 7 | 12 | (29)
Foreign currency translation adjustments, pretax | (12) | 2 | (1)
Foreign currency translation adjustments, tax | (1) | 1 | (1)
Foreign currency translation adjustments | (13) | 3 | (2)
Pension and other postretirement plan adjustments, pretax | 0 | (1) | 2
Pension and other postretirement plan adjustments, tax | 0 | 0 | 0
Pension and other postretirement plan adjustments | 0 | (1) | 2
Accumulated net investment gain (loss) attributable to parent |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
AOCI beginning balance | (287) | (497) | 136
AOCI ending balance | (202) | (287) | (497)
Accumulated net gain (loss) on cash flow hedges attributable to parent |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
AOCI beginning balance | (17) | (29) | 0
AOCI ending balance | (10) | (17) | (29)
Accumulated foreign currency adjustment attributable to parent |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
AOCI beginning balance | (17) | (20) | (18)
AOCI ending balance | (30) | (17) | (20)
Accumulated defined benefit plans adjustment attributable to parent |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
AOCI beginning balance | 2 | 3 | 1
AOCI ending balance | 2 | 2 | 3
AOCI attributable to parent |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
AOCI beginning balance | (319) | (543) | 119
Other comprehensive income (loss) | 79 | 224 | (662)
AOCI ending balance | $ (240) | $ (319) | $ (543)

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