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DERIVATIVE INSTRUMENTS - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value and Derivative Instruments, Gain (Loss) (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Assets | $ 34 | $ (46)
Liabilities | (1,230) | (1,104)
Modco arrangement | Reinsurance funds withheld |  |
Derivatives, Fair Value [Line Items] |  |
Assets | 34 | (46)
Liabilities | 0 | 0
Indexed annuity and variable annuity product | Policyholders’ account balances |  |
Derivatives, Fair Value [Line Items] |  |
Assets | 0 | 0
Liabilities | (1,196) | (1,104)
Funds withheld arrangement | Funds withheld for reinsurance liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Assets | 0 | 0
Liabilities | $ (34) | $ 0

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