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Acquisitions and Dispositions (Sale of Hope) (Narrative) (Detail) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Feb. 02, 2022 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Business Acquisition And Dispositions [Line Items] |  |  |  |  |
Income tax expense |  | $ (117) | $ (47) | $ 119 | $ 165
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 |  |  |  |
Income tax expense |  |  |  | 87 |
Disposal group, recognized a pre-tax gain |  | 40 |  | 40 |
Goodwill write-off |  |  |  | 110 |
Disposal group, recognized a gain on disposal after tax |  | $ 65 |  | $ 65 |

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