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Future Policy Benefits - Additional Information (Detail) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
Life Insurance |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |
Liability for future policy benefit adverse development expenses | $ 5 |
Liability for future policy benefit cumulative increase (decrease) from cash flow change |  | $ 81
Liability for future policy benefit cumulative increase (decrease) of actual variance from expected experience | $ 12 | 23
Percentage of net premium ratio capped | 100.00% |
Fixed annuities |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |
Liability for future policy benefit cumulative increase (decrease) from cash flow change |  | (33)
Liability for future policy benefit cumulative increase (decrease) of actual variance from expected experience | $ (42) | (30)
Long-term Care Insurance |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |
Liability for future policy benefit cumulative increase (decrease) from cash flow change | (86) | (16)
Liability for future policy benefit cumulative increase (decrease) of actual variance from expected experience | $ 48 | $ 315

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- Definition Net amount of cumulative increase (decrease) in expected net premium component and expected future policy benefit and expense component of liability for future policy benefit from cash flow assumption change for future cash flows. + References No definition available. + Details
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- Definition Amount of expense for adverse development on liability of future policy benefit from net premium exceeding gross premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(2)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 + Details
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