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Insurance Liabilities (Future Policy Benefits - SOP) (Details) - ULSG - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Additional Liability, Long-Duration Insurance [Line Items] |  |  |  |
Additional Liability, Long-Duration Insurance, before Reinsurance, after Discount Rate Change | $ 7,686 | $ 7,123 | $ 7,607 | $ 6,935
Additional Liability, Long-Duration Insurance, Original Discount Rate, before Cash Flow and Reinsurance | 7,906 | 7,294 | 7,784 | 7,175
Additional Liability, Long-Duration Insurance, Cumulative Increase (Decrease) of Actual Variance from Expected Experience |  |  | 40 | 34
Additional Liability, Long-Duration Insurance, Original Discount Rate, before Reinsurance, after Cash Flow Change |  |  | $ 7,824 | $ 7,209
Additional Liability, Long-Duration Insurance, Interest Income (Expense) | 94 | 87 |  |
Additional Liability, Long-Duration Insurance, Net Premium Collected | 103 | 101 |  |
Additional Liability, Long-Duration Insurance, Benefit Payment | (115) | (103) |  |
AOCI, Liability for Future Policy Benefit, before Tax | (220) | (171) |  |
Additional Liability, Long-Duration Insurance, Reinsurance Recoverable, after Allowance | 1,447 | 1,397 |  |
Additional Liability, Long-Duration Insurance, after Reinsurance | $ 6,239 | $ 5,726 |  |
Additional Liability, Long-Duration Insurance, Weighted-Average Duration | 6 years 8 months 12 days | 6 years 8 months 12 days |  |
Additional Liability, Long-Duration Insurance, Weighted-Average Interest Accretion Rate | 4.93% | 4.91% |  |
Additional Liability, Long-Duration Insurance, Gross Premium Income | $ 254 | $ 256 |  |

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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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