DERIVATIVES AND HEDGING - Primary Risks Managed by Derivatives (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units		$ 39,456
Fair value, assets	$ 1,105	1,478
Fair value, liabilities	(1,241)	(1,368)
Future policy benefits
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net embedded derivative liability position		4,060
Policyholders' account balances
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net embedded derivative liability position		2,041
Other assets
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net embedded derivative liability position		400
Reinsurance recoverables
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net embedded derivative liability position		1,881
Reinsurance Payables
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net embedded derivative liability position		1,881
Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	29,116	38,819
Fair value, assets	1,105	1,449
Fair value, liabilities	(1,241)	(1,367)
Interest Rate Futures | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units		55
Fair value, assets		0
Fair value, liabilities		0
Interest Rate Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units		10,520
Fair value, assets		339
Fair value, liabilities		(255)
Foreign Currency Forwards | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units		50
Fair value, assets		0
Fair value, liabilities		(1)
Foreign Currency Swaps | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units		637
Fair value, assets		29
Fair value, liabilities		(1)
Foreign Currency Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units		208
Fair value, assets		10
Fair value, liabilities		(1)
Credit Default Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units		1,746
Fair value, assets		48
Fair value, liabilities		0
Equity Futures | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units		855
Fair value, assets		1
Fair value, liabilities		(1)
Total Return Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units		4,803
Fair value, assets		88
Fair value, liabilities		(81)
Equity Options | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units		20,582
Fair value, assets		963
Fair value, liabilities		$ (1,028)
Retained Business | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	15,792
Fair value, assets	736
Fair value, liabilities	(547)
Retained Business | Interest Rate Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	9,761
Fair value, assets	212
Fair value, liabilities	(546)
Retained Business | Foreign Currency Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	97
Fair value, assets	17
Fair value, liabilities	0
Retained Business | Credit Default Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	520
Fair value, assets	1
Fair value, liabilities	(1)
Retained Business | Equity Futures | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	1,728
Fair value, assets	180
Fair value, liabilities	0
Retained Business | Total Return Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	0
Fair value, assets	94
Fair value, liabilities	0
Retained Business | Equity Options | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	3,686
Fair value, assets	232
Fair value, liabilities	0
Ceded Business | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	13,324
Fair value, assets	369
Fair value, liabilities	(694)
Ceded Business | Interest Rate Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	2,693
Fair value, assets	49
Fair value, liabilities	(119)
Ceded Business | Foreign Currency Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	423
Fair value, assets	88
Fair value, liabilities	0
Ceded Business | Credit Default Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	71
Fair value, assets	0
Fair value, liabilities	(3)
Ceded Business | Total Return Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	4
Fair value, assets	0
Fair value, liabilities	(1)
Ceded Business | Equity Options | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	10,133
Fair value, assets	232
Fair value, liabilities	$ (571)