DERIVATIVES - Derivatives by Category (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Designated for hedge accounting | Cash flow hedge
Derivatives, Fair Value [Line Items]
Notional Amount	$ 1,876	$ 957
Derivative Assets	7	0
Derivative Liabilities	437	219
Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Notional Amount	79,394	104,700
Derivative Assets	12,303	9,186
Derivative Liabilities	11,261	8,051
Currency Swaps | Designated for hedge accounting | Cash flow hedge
Derivatives, Fair Value [Line Items]
Notional Amount	921	0
Derivative Assets	7	0
Derivative Liabilities	42	0
Currency Swaps | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Notional Amount	541	347
Derivative Assets	1	0
Derivative Liabilities	0	0
Swaps | Designated for hedge accounting | Cash flow hedge
Derivatives, Fair Value [Line Items]
Notional Amount	955	957
Derivative Assets	0	0
Derivative Liabilities	395	219
Swaps | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Notional Amount	1,876	22,816
Derivative Assets	0	551
Derivative Liabilities	45	434
Futures | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Notional Amount	2,213	4,267
Derivative Assets	0	0
Derivative Liabilities	0	0
Swaps | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Notional Amount	13,310	22,404
Derivative Assets	5	6
Derivative Liabilities	0	0
Options | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Notional Amount	48,380	35,786
Derivative Assets	12,015	8,383
Derivative Liabilities	5,059	3,715
Futures | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Notional Amount	12,455	18,161
Derivative Assets	0	0
Derivative Liabilities	0	0
Swaptions | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Notional Amount	0	0
Derivative Assets	0	0
Derivative Liabilities	0	0
Credit default swaps | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Notional Amount	619	919
Derivative Assets	2	8
Derivative Liabilities	3	1
Currency forwards | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Notional Amount	0	0
Derivative Assets	0	0
Derivative Liabilities	0	0
Margin | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Notional Amount	0	0
Derivative Assets	102	26
Derivative Liabilities	0	66
Collateral | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Notional Amount	0	0
Derivative Assets	178	212
Derivative Liabilities	6,154	3,835
Amounts due from reinsurers
Derivatives, Fair Value [Line Items]
Notional Amount	0	0
Derivative Assets	5,813	0
Derivative Liabilities	0	0
GMIB reinsurance contracts
Derivatives, Fair Value [Line Items]
Notional Amount	0	0
Derivative Assets	2,068	2,859
Derivative Liabilities	0	0
GMxB derivative features liability
Derivatives, Fair Value [Line Items]
Notional Amount	0	0
Derivative Assets	0	0
Derivative Liabilities	8,525	10,936
SCS, SIO, MSO and IUL indexed features
Derivatives, Fair Value [Line Items]
Notional Amount	0	0
Derivative Assets	0	0
Derivative Liabilities	6,641	4,378
Embedded derivatives
Derivatives, Fair Value [Line Items]
Notional Amount	0	0
Derivative Assets	7,881	2,859
Derivative Liabilities	15,166	15,314
Derivative instruments including embedded derivative
Derivatives, Fair Value [Line Items]
Notional Amount	81,270	105,657
Derivative Assets	20,191	12,045
Derivative Liabilities	$ 26,864	$ 23,584