DERIVATIVES - Financial Statement Impact of Derivatives By Category (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	$ (4,685)	$ (1,541)	$ (3,831)
Interest credited to policyholder's account balances	(1,128)	(1,118)	(1,149)
Designated for hedge accounting | Cash flow hedge
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	(71)	(9)	4
Interest credited to policyholder's account balances	(45)	0	0
AOCI	(82)	(87)	(28)
Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	(3,371)	1,939	656
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Currency Swaps | Designated for hedge accounting | Cash flow hedge
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	(2)	0	0
Interest credited to policyholder's account balances	(45)	0	0
AOCI	5	0	0
Currency Swaps | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	3	(2)	(9)
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Swaps | Designated for hedge accounting | Cash flow hedge
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	(69)	(9)	4
Interest credited to policyholder's account balances	0	0	0
AOCI	(87)	(87)	(28)
Swaps | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	(2,316)	2,832	2,033
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Futures | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	(607)	(955)	(1,294)
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Swaps | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	(3,608)	(3,353)	(2,405)
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Options | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	3,883	1,663	2,211
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Futures | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	(727)	1,745	139
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Swaptions | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	0	9	(35)
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Credit default swaps | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	1	0	16
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Currency forwards | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	0	0	0
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Margin | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	0	0	0
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Collateral | Not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	0	0	0
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Amounts due from reinsurers
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	517	0	0
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
GMIB reinsurance contracts
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	(777)	472	500
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
GMxB derivative features liability
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	2,792	(2,238)	(2,439)
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
SCS, SIO, MSO and IUL indexed features
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	(3,760)	(1,693)	(2,552)
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Embedded derivatives
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	(1,228)	(3,459)	(4,491)
Interest credited to policyholder's account balances	0	0	0
AOCI	0	0	0
Derivative instruments including embedded derivative
Derivatives, Fair Value [Line Items]
Net derivative gains (losses)	(4,670)	(1,529)	(3,831)
Interest credited to policyholder's account balances	(45)	0	0
AOCI	(82)	(87)	$ (28)
Investment fees	$ 15	$ 12