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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, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Business Acquisition And Dispositions [Line Items] |  |  |  |  |  |
Goodwill write-off | [1] |  |  | $ 110 |  |
Deferred income tax expense |  |  |  | 1 | $ 425 | $ 439
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 |  |  |  | 14 |  |
Disposal group, recognized a gain on disposal after tax |  |  |  | 84 |  |
Goodwill write-off |  |  |  | $ 110 |  |
Deferred income tax expense |  |  | $ 90 |  |  |
[1] | See Note 3 for more information.

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