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Acquisitions and Dispositions (Sale of Hope) (Narrative) (Detail) - USD ($) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 02, 2022 | Jun. 30, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Business Acquisition And Dispositions [Line Items] |  |  |  |  |
Deferred taxes |  |  | $ (302) | $ 1,474 | $ 58
Ullico Inc |  |  |  |  |
Business Acquisition And Dispositions [Line Items] |  |  |  |  |
Percentage of equity interests expected to be sold | 100.00% |  |  |  |
Cash consideration from sale of equity interest | $ 690 |  |  |  |
Disposal group, recognized a pre-tax gain |  |  |  |  | 28
Disposal group, recognized a gain on disposal after tax |  |  |  |  | $ 73
Goodwill write-off |  |  | $ 110 |  |
Deferred taxes |  | $ 90 |  |  |

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