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Discontinued Operations Presentation - Schedule of Income Statement Line Items of Discontinued Operations (Details) - USD ($) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 09, 2024 | Jun. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Benefits, losses and expenses: |  |  |  |  |
Income (loss) from discontinued operations, net of income taxes |  |  | $ (3,626) | $ 1,137 | $ 8,383
Less: Net income (loss) from discontinued operations attributable to noncontrolling interests |  |  | 478 | 235 | 1,046
Net income (loss) from discontinued operations attributable to AIG |  |  | (4,104) | 902 | 7,337
Other investments |  |  | 9,828 | 6,368 |
Discontinued Operations |  |  |  |  |
Benefits, losses and expenses: |  |  |  |  |
Loss on disposition of operations, net of tax | $ (4,754) | $ (4,800) |  |  |
Discontinued Operations | Corebridge Financial Inc |  |  |  |  |
Revenues: |  |  |  |  |
Premiums |  |  | 2,723 | 7,690 | 5,091
Policy fees |  |  | 1,269 | 2,797 | 2,913
Net investment income |  |  | 5,238 | 11,146 | 9,398
Net realized gains (losses) |  |  | (923) | (3,530) | 6,236
Other income |  |  | 372 | 761 | 816
Total revenues |  |  | 8,679 | 18,864 | 24,454
Benefits, losses and expenses: |  |  |  |  |
Policyholder benefits and losses incurred |  |  | 3,618 | 9,362 | 6,715
Change in the fair value of market risk benefits, net |  |  | (350) | 2 | (960)
Interest credited to policyholder account balances |  |  | 2,184 | 4,424 | 3,746
Amortization of deferred policy acquisition costs |  |  | 465 | 1,037 | 1,013
General operating and other expenses |  |  | 1,350 | 3,100 | 2,962
Interest expense |  |  | 249 | 620 | 522
Net (gain) loss on divestitures and other |  |  | (191) | (672) | (71)
Total benefits, losses and expenses |  |  | 7,325 | 17,873 | 13,927
Income (loss) from discontinued operations before income tax expense (benefit) and loss on disposal of discontinued operations |  |  | 1,354 | 991 | 10,527
Income tax expense (benefit) |  |  | 226 | (146) | 2,144
Income (loss) from discontinued operations, net of income taxes before loss on disposal of discontinued operations |  |  | 1,128 | 1,137 | 8,383
Loss on disposition of operations, net of tax |  |  | (4,754) | 0 | 0
Income (loss) from discontinued operations, net of income taxes |  |  | (3,626) | 1,137 | 8,383
Less: Net income (loss) from discontinued operations attributable to noncontrolling interests |  |  | 478 | 235 | 1,046
Net income (loss) from discontinued operations attributable to AIG |  |  | $ (4,104) | $ 902 | $ 7,337

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