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Other Additional Liability Rollforward (Details) - Universal Life - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Additional Liability, Long-Duration Insurance [Roll Forward] |  |  |
Balance, beginning of period | $ 121 | $ 133 | $ 116
Balance, beginning of period before shadow reserve adjustments | 123 | 131 | 113
Effect of changes in cash flow assumptions | (6) | (1) | 4
Effect of actual variances from expected experience | 0 | 6 | 0
Adjusted beginning of period balance | 117 | 136 | 117
Interest accrual | 4 | 4 | 4
Excess death benefits | (6) | (18) | (4)
Attributed assessments | 12 | 12 | 12
Effect of changes in interest rate assumptions | 2 | (11) | 2
Balance, end of period before shadow reserve adjustments | 129 | 123 | 131
Shadow reserve adjustments | 1 | 2 | (2)
Balance, end of period | 128 | 121 | 133
Less reinsurance recoverable, end of period | 6 | 5 | 3
Net other additional liability, after reinsurance recoverable | $ 134 | $ 126 | $ 136
Weighted-average duration of the other additional liability | 32 years | 34 years | 35 years

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- Definition Additional Liability, Long-Duration Insurance, Shadow reserve adjustments + References No definition available. + Details
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- Definition Amount, after effect of reinsurance, of present value of total expected payment to policyholder in excess of present value of total expected assessment. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 + Details
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- Definition Amount, before effect of reinsurance and after current period update of cash flow assumption and discount rate change, of present value of total expected payment to policyholder in excess of present value of total expected assessment. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 + Details
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