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FAIR VALUE - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 24,489	$ 22,236
Fair value of public equity portfolio	4,300	2,700
Other invested assets	961	930
Fair Value | Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other invested assets	293	292
Fixed maturities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 1,800	$ 1,700

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