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INVESTMENTS - Schedule of Roll Forward of Allowance for Credit Losses of Fixed Maturities, Available for Sale (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |
Beginning Balance | $ (54) | $ (30)
Credit losses on securities where credit losses were not previously recorded | (24) | (26)
Increases in allowance on previously impaired securities | (1) | (21)
Decreases in allowance on previously impaired securities | 0 |
Reduction in allowance due to disposals | 30 | 23
Balance, end of period | (48) | (54)
Corporate Securities |  |
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |
Beginning Balance | (45) | (19)
Credit losses on securities where credit losses were not previously recorded | (23) | (11)
Increases in allowance on previously impaired securities | (1) | (20)
Decreases in allowance on previously impaired securities | 0 |
Reduction in allowance due to disposals | 22 | 6
Balance, end of period | (47) | (45)
Asset-Backed Securities |  |
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |
Beginning Balance | 0 | (8)
Credit losses on securities where credit losses were not previously recorded | 0 | 0
Increases in allowance on previously impaired securities | 0 | 0
Decreases in allowance on previously impaired securities | 0 |
Reduction in allowance due to disposals | 0 | 8
Balance, end of period | 0 | 0
Foreign Corporate Securities |  |
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |
Beginning Balance | (10) | (3)
Credit losses on securities where credit losses were not previously recorded | 0 | (16)
Increases in allowance on previously impaired securities | 0 | (1)
Decreases in allowance on previously impaired securities | 0 |
Reduction in allowance due to disposals | 8 | 10
Balance, end of period | $ (1) | $ (10)

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- Definition Debt Securities, Available-For-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Not To Sell Before Recovery, Credit Loss, Previously Recorded, Expense + References No definition available. + Details
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- Definition Debt Securities, Available-For-Sale, Excluding Accrued Interest, Allowance For Credit Loss, Not To Sell Before Recovery, Credit Loss, Previously Recorded, Reversal + References No definition available. + Details
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- Definition Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
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- Definition Amount, excluding accrued interest, of credit loss expense on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) with no credit loss previously recorded. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-9 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) from sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-9 + Details
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- Details
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