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INVESTMENTS - Schedule of Proceeds and Split Between Gross Gains and Losses, from Dispositions of Fixed Maturity Securities (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract] |  |  |  |
Proceeds from sales of fixed maturity securities - available for sale | $ 3,237 | $ 300 | $ 4,322 | $ 468
Gross gains from dispositions | 59 | 4 | 86 | 21
Gross losses from dispositions | (84) | (23) | (133) | (42)
Proceeds from sales of equity securities | 0 | 80 | 15 | 126
Gross gains from dispositions | 0 | 2 | 2 | 8
Gross losses from dispositions | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Amount of realized gain 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 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 + Details
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- Definition Amount of realized 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 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 + Details
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