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DERIVATIVE INSTRUMENTS - Schedule of Interest Rate Fair Value Hedges Hedged Items (Details) - Fixed maturity securities - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
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Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Carrying Amount of Hedged Assets/ (Liabilities) | [1] | $ 1,597 | $ 1,692
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of Hedged Assets/(Liabilities) |  | $ 161 | $ 164
[1] | The balance includes hedging adjustment on discontinued hedging relationships of $161 in 2024 and $164 in 2023.

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