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FAIR VALUE DISCLOSURES - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Fair Value Inputs Assets Quantitative Information 1 [Line Items] |  |
AFS fixed maturities transferred from Level 3 to Level 2 | $ 200 | $ 785
AFS fixed maturities transferred from Level 2 to Level 3 | $ 213 | $ 27
Fair value measurement with unobservable inputs reconciliation recurring basis asset transfers percentage | 13.10% | 6.80%
Assets, Fair Value Adjustment | $ 1,100 | $ 1,600
Nonrecurring | Level 3 |  |
Fair Value Inputs Assets Quantitative Information 1 [Line Items] |  |
Investments, fair value disclosure | $ 1,000 | $ 635

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