DERIVATIVES - Derivatives by Category (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Notional Amount	$ 101,120		$ 117,398
Derivative Assets	10,576		8,271
Derivative Liabilities	22,722		17,018
Net Derivative Gains (Losses)	2,104	$ (2,080)
Futures
Derivatives, Fair Value [Line Items]
Notional Amount	3,739		3,510
Derivative Assets	0		0
Derivative Liabilities	0		0
Net Derivative Gains (Losses)	(347)	(967)
Swaps
Derivatives, Fair Value [Line Items]
Notional Amount	20,667		17,064
Derivative Assets	27		9
Derivative Liabilities	18		279
Net Derivative Gains (Losses)	(594)	(1,263)
Equity Option
Derivatives, Fair Value [Line Items]
Notional Amount	31,679		47,766
Derivative Assets	5,543		5,080
Derivative Liabilities	2,791		1,749
Net Derivative Gains (Losses)	(480)	1,241
Swaps
Derivatives, Fair Value [Line Items]
Notional Amount	23,952		23,700
Derivative Assets	1,696		467
Derivative Liabilities	338		523
Net Derivative Gains (Losses)	3,588	2,844
Futures
Derivatives, Fair Value [Line Items]
Notional Amount	19,484		20,424
Derivative Assets	0		0
Derivative Liabilities	0		0
Net Derivative Gains (Losses)	2,058	183
Swaptions
Derivatives, Fair Value [Line Items]
Notional Amount	0		3,201
Derivative Assets	0		16
Derivative Liabilities	0		0
Net Derivative Gains (Losses)	9	146
Credit default swaps
Derivatives, Fair Value [Line Items]
Notional Amount	1,252		1,232
Derivative Assets	9		18
Derivative Liabilities	4		0
Net Derivative Gains (Losses)	(4)	13
Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Notional Amount	347		501
Derivative Assets	0		3
Derivative Liabilities	0		0
Net Derivative Gains (Losses)	(3)	(13)
Margin
Derivatives, Fair Value [Line Items]
Notional Amount	0		0
Derivative Assets	40		140
Derivative Liabilities	125		0
Net Derivative Gains (Losses)	0	0
Collateral
Derivatives, Fair Value [Line Items]
Notional Amount	0		0
Derivative Assets	14		72
Derivative Liabilities	4,959		3,001
Net Derivative Gains (Losses)	0	0
GMIB Reinsurance Contracts
Derivatives, Fair Value [Line Items]
Notional Amount	0		0
Derivative Assets	3,247		2,466
Derivative Liabilities	0		0
Net Derivative Gains (Losses)	849	881
GMxB Derivative Features’ Liability
Derivatives, Fair Value [Line Items]
Notional Amount	0		0
Derivative Assets	0		0
Derivative Liabilities	11,985		8,316
Net Derivative Gains (Losses)	(3,382)	(3,656)
SCS, SIO, MSO and IUL Indexed Features
Derivatives, Fair Value [Line Items]
Notional Amount	0		0
Derivative Assets	0		0
Derivative Liabilities	2,502		$ 3,150
Net Derivative Gains (Losses)	410	$ (1,489)
Investment fees	$ 9