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FAIR VALUE DISCLOSURES - Narrative (Details) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Fair Value Inputs Assets Quantitative Information [Line Items]
Change in purchased market risk benefit asset fair value	$ 509		$ 687
AFS fixed maturities transferred from Level 3 to Level 2	168	$ 489
AFS fixed maturities transferred from Level 2 to Level 3	$ 128	$ 29
Percentage of total equity representing AFS fixed maturities transferred	5.90%	15.80%
Nonrecurring | Level 3
Fair Value Inputs Assets Quantitative Information [Line Items]
Investments, fair value	$ 1,800		$ 1,100

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Percentage of transfers into assets measured at fair value that have taken place during the period.

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Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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