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AOCI - Components and Changes in AOCI (Details) - USD ($) $ in Millions | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Balance as of beginning-of-period | $ 8,269 |
Balance as of end-of-period | 9,548 | $ 7,949
Unrealized Gain (Loss) on Fixed Maturity AFS Securities and Certain |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Balance as of beginning-of-period | (6,239) | (5,188)
Income tax benefit (expense) | (268) | 194
Reclassification adjustment for gains (losses) included in net income (loss) | (117) | (137)
Income tax benefit (expense) | 25 | 29
Balance as of end-of-period | (5,146) | (5,828)
Unrealized holding gains (losses) arising during the year |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Changes arising during the year | 1,083 | (1,971)
Change in foreign currency exchange rate adjustment |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Changes arising during the year | 483 | (117)
Change in future contract benefits and policyholder account balances, net of reinsurance |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Changes arising during the year | (297) | 1,146
Unrealized Gain (Loss) on Derivative Instruments |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Balance as of beginning-of-period | 638 | 375
Income tax benefit (expense) | 57 | (62)
Reclassification adjustment for gains (losses) included in net income (loss) | 39 | 42
Income tax benefit (expense) | (8) | (9)
Balance as of end-of-period | 396 | 575
Unrealized holding gains (losses) arising during the period - cash flow hedges |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Changes arising during the year | 206 | 178
Change in foreign currency exchange rate adjustment |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Changes arising during the year | (474) | 117
Market Risk Benefit Non-Performance Risk Gain (Loss) |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Balance as of beginning-of-period | 146 | 1,070
Adjustment arising during the year | (42) | (841)
Income tax benefit (expense) | 10 | 180
Balance as of end-of-period | 114 | 409
Policyholder Liability Discount Rate Remeasurement Gain (Loss) |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Balance as of beginning-of-period | 744 | 587
Adjustment arising during the year | (222) | 264
Income tax benefit (expense) | 47 | (56)
Balance as of end-of-period | 569 | 795
Foreign Currency Translation Adjustment |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Balance as of beginning-of-period | (29) | (26)
Foreign currency translation adjustment arising during the year | 15 | (1)
Balance as of end-of-period | (14) | (27)
Funded Status of Employee Benefit Plans |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Balance as of beginning-of-period | (296) | (294)
Adjustment arising during the year | (15) | 1
Balance as of end-of-period | $ (311) | $ (293)

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