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Shares and Stockholders' Equity - Components and Changes in AOCI (Details) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Balance as of beginning-of-period | $ 6,893 |
Balance as of end-of-period | 9,013 | $ 3,199
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 | (5,188) | (8,916)
Income tax benefit (expense) | (276) | 707
Reclassification adjustment for gains (losses) included in net income (loss) | (163) | (1,145)
Income tax benefit (expense) | 34 | 240
Balance as of end-of-period | (4,038) | (10,703)
Unrealized holding gains (losses) arising during the year |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Changes arising during the year | 1,555 | (3,405)
Change in foreign currency exchange rate adjustment |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Changes arising during the year | 124 | (21)
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 | (382) | 27
Unrealized Gain (Loss) on Derivative Instruments |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Balance as of beginning-of-period | 375 | 388
Income tax benefit (expense) | (39) | (55)
Reclassification adjustment for gains (losses) included in net income (loss) | 60 | 68
Income tax benefit (expense) | (13) | (14)
Balance as of end-of-period | 473 | 540
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 | 305 | 231
Change in foreign currency exchange rate adjustment |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Changes arising during the year | (121) | 30
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 | 1,070 | 1,741
Adjustment arising during the year | (367) | (944)
Income tax benefit (expense) | 78 | 202
Balance as of end-of-period | 781 | 999
Policyholder Liability Discount Rate Remeasurement Gain (Loss) |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Balance as of beginning-of-period | 587 | 747
Adjustment arising during the year | (209) | 347
Income tax benefit (expense) | 44 | (73)
Balance as of end-of-period | 422 | 1,021
Foreign Currency Translation Adjustment |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Balance as of beginning-of-period | (26) | (34)
Foreign currency translation adjustment arising during the year | 8 | 1
Balance as of end-of-period | (18) | (33)
Funded Status of Employee Benefit Plans |  |
Change in our unrealized gain on derivative instruments in accumulated OCI |  |
Balance as of beginning-of-period | (294) | (278)
Adjustment arising during the year | (8) | (26)
Balance as of end-of-period | $ (302) | $ (304)

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