DERIVATIVES AND HEDGING - Primary Risks Managed by Derivatives (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair value, assets	$ 1,017	$ 1,478
Fair value, liabilities	(1,657)	(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		2,040
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	32,692	38,819
Fair value, assets	1,017	1,449
Fair value, liabilities	1,657	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	9,241
Fair value, assets	354
Fair value, liabilities	380
Retained Business | Interest Rate Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	3,567
Fair value, assets	9
Fair value, liabilities	344
Retained Business | Foreign Currency Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	105
Fair value, assets	7
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	1,771
Fair value, assets	42
Fair value, liabilities	6
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	72
Fair value, liabilities	29
Retained Business | Equity Options | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	3,798
Fair value, assets	224
Fair value, liabilities	0
Ceded Business | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	23,451
Fair value, assets	663
Fair value, liabilities	1,277
Ceded Business | Interest Rate Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	3,090
Fair value, assets	28
Fair value, liabilities	64
Ceded Business | Foreign Currency Forwards | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	13
Fair value, assets	0
Fair value, liabilities	0
Ceded Business | Foreign Currency Swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	734
Fair value, assets	92
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	74
Fair value, assets	0
Fair value, liabilities	2
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	0
Ceded Business | Equity Options | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross Notional Values/Units	19,536
Fair value, assets	543
Fair value, liabilities	$ 1,211