DERIVATIVES AND HEDGING - Impact of Derivatives by Operating Segment (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2022	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	$ (206)	$ 24			$ (560)	$ (401)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Investment gains (losses), net	Investment gains (losses), net			Investment gains (losses), net	Investment gains (losses), net
Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				$ 501
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Investment gains (losses), net
Investment gains (losses), net | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				500
Net Investment Income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				1
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Net investment income
Net Investment Income | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Other Income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				2
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Other income (loss)
Other Income | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Change in AOCI
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				4
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Net unrealized investment losses
Change in AOCI | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Interest Rate | Investment gains (losses), net | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				(527)
Interest Rate | Net Investment Income | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Interest Rate | Other Income | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Interest Rate | Change in AOCI | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Credit | Investment gains (losses), net | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				(12)
Credit | Net Investment Income | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Credit | Other Income | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Credit | Change in AOCI | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Currency/Interest Rate | Investment gains (losses), net | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				1
Currency/Interest Rate | Investment gains (losses), net | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				(6)
Currency/Interest Rate | Net Investment Income | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				1
Currency/Interest Rate | Net Investment Income | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Currency/Interest Rate | Other Income | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				2
Currency/Interest Rate | Other Income | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Currency/Interest Rate | Change in AOCI | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				4
Currency/Interest Rate | Change in AOCI | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Equity | Investment gains (losses), net | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				59
Equity | Net Investment Income | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Equity | Other Income | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Equity | Change in AOCI | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Embedded Derivatives | Investment gains (losses), net | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				986
Embedded Derivatives | Net Investment Income | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Embedded Derivatives | Other Income | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				0
Embedded Derivatives | Change in AOCI | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)				$ 0
Retained Business
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	$ (177)	$ (125)			$ 133	$ (616)
Retained Business | Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Investment gains (losses), net
Retained Business | Net Investment Income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Net investment income
Retained Business | Other Income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Other income (loss)
Retained Business | Change in AOCI
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Net unrealized investment losses
Retained Business | Interest Rate
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	(206)	(259)			(704)	(168)
Retained Business | Credit
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	2	(2)			(2)	4
Retained Business | Currency/Interest Rate
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	0	12			12	0
Retained Business | Equity
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	27	124			827	(452)
Ceded Business
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	(29)	149			(693)	215
Ceded Business | Investment gains (losses), net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Investment gains (losses), net
Ceded Business | Net Investment Income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Net investment income
Ceded Business | Other Income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Other income (loss)
Ceded Business | Change in AOCI
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Net unrealized investment losses
Ceded Business | Interest Rate
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	5	(36)			(56)	72
Ceded Business | Credit
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	2	2			(4)	3
Ceded Business | Currency
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	0	0			2	0
Ceded Business | Currency/Interest Rate
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	0	(36)			94	0
Ceded Business | Equity
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, gain (loss)	$ (36)	$ 219			$ (729)	$ 140