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INVESTMENTS - Narrative (Details) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 USD ($) security | Dec. 31, 2023 USD ($) security
Debt Securities, Available-for-Sale [Line Items] |  |
Aggregate market value of investments in unrealized loss position | $ 17,408 | $ 14,789
Gross unrealized losses on investments in unrealized loss position | 1,249 | 1,137
Fixed maturity securities, duration of unrealized loss, less than 12 months, gross unrealized depreciation | 234 | 102
Fixed maturity securities, duration of unrealized loss, greater than 12 months, gross unrealized depreciation | 1,016 | 1,035
Additional contractual commitments | 2,800 |
Cash surrender value of life insurance | $ 1,400 | $ 1,300
Number of securities held as primary beneficiary | security | 0 | 0
Variable Interest Entity, Not Primary Beneficiary |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Maximum exposure to loss | $ 5,000 | $ 4,800
Commitments to fund investments | 2,200 |
Partnership Interest |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Maximum exposure to loss | $ 3,600 | $ 3,400
Investments, Debt Securities Benchmark | Issuer | Issuer One |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Percentage of overall fair value of fixed maturity securities available for sale, less than | 3.00% | 3.00%
Investments, Debt Securities Benchmark | Issuer | Issuer Two |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Percentage of overall fair value of fixed maturity securities available for sale, less than | 0.80% | 0.70%
Investment Grade |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Fixed maturity securities, duration of unrealized loss, less than 12 months, gross unrealized depreciation | $ 227 | $ 86
Fixed maturity securities, duration of unrealized loss, greater than 12 months, gross unrealized depreciation | 1,000 | 1,000
Fixed maturities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Fixed maturity securities, duration of unrealized loss, less than 12 months, gross unrealized depreciation |  | 102
Fixed maturity securities, duration of unrealized loss, greater than 12 months, gross unrealized depreciation | $ 1,000 | $ 1,000

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