DERIVATIVES AND HEDGING - Impact of Derivatives by Operating Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	$ (63)	$ (202)	$ (301)	$ (195)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Investment losses, net
Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	$ (64)		(304)
Other income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	1		3
Retained Business
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	(99)	(339)	(451)	(439)
Retained Business | Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	(100)		(454)
Retained Business | Other income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	1		3
Retained Business | Interest Rate
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	(19)	(77)	(93)	38
Retained Business | Interest Rate | Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	(19)		(93)
Retained Business | Interest Rate | Other income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	0		0
Retained Business | Currency/Interest Rate
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	1		3
Retained Business | Currency/Interest Rate | Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	0		0
Retained Business | Currency/Interest Rate | Other income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	1		3
Retained Business | Credit
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	1	2	3	2
Retained Business | Credit | Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	1		3
Retained Business | Credit | Other income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	0		0
Retained Business | Equity
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	(82)	(264)	(364)	(479)
Retained Business | Equity | Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	(82)		(364)
Retained Business | Equity | Other income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	0		0
Ceded Business
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	36	137	150	244
Ceded Business | Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	36		150
Ceded Business | Other income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	0		0
Ceded Business | Interest Rate
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	1	36	3	67
Ceded Business | Interest Rate | Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	1		3
Ceded Business | Interest Rate | Other income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	0		0
Ceded Business | Currency/Interest Rate
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	1		1
Ceded Business | Currency/Interest Rate | Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	1		1
Ceded Business | Currency/Interest Rate | Other income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	0		0
Ceded Business | Credit
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)		1		1
Ceded Business | Equity
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	34	$ 100	146	$ 176
Ceded Business | Equity | Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	34		146
Ceded Business | Equity | Other income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	$ 0		$ 0