INVESTMENTS - Net Unrealized Investment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 379	$ 667	$ 699	$ 781
Impact of net unrealized investment gains (losses)			2
Ending balance	384	661	384	661
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Unrealized Investment Gains Losses All Other | Net Unrealized Gains (Losses) on Investments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(293)	171	128	246
Net investment gains (losses) arising during the period	(146)	(19)	(570)	(93)
Included in net income (loss)	0	1	3	3
Other			0	(3)
Impact of net unrealized investment gains (losses)	0	0	0	0
Net unrealized investment gains (losses) excluding credit losses	(439)	153	(439)	153
Net unrealized investment gains (losses) with credit losses	0	0	0	0
Ending balance	(439)	153	(439)	153
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Unrealized Investment Gains Losses All Other | DAC
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	119	(82)	(46)	(111)
Impact of net unrealized investment gains (losses)	56	21	221	50
Net unrealized investment gains (losses) excluding credit losses	175	(61)	175	(61)
Ending balance	175	(61)	175	(61)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Unrealized Investment Gains Losses All Other | Policyholders’ Liabilities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(80)	39	28	37
Impact of net unrealized investment gains (losses)	(45)	(10)	(153)	(8)
Net unrealized investment gains (losses) excluding credit losses	(125)	29	(125)	29
Ending balance	(125)	29	(125)	29
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Unrealized Investment Gains Losses All Other | Deferred Income Tax Asset (Liability)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	53	(27)	(24)	(37)
Impact of net unrealized investment gains (losses)	29	3	106	13
Net unrealized investment gains (losses) excluding credit losses	82	(24)	82	(24)
Ending balance	82	(24)	82	(24)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Unrealized Investment Gains Losses All Other | AOCI Gain (Loss) Related to Net Unrealized Investment Gains (Losses)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(201)	101	86	135
Net investment gains (losses) arising during the period	(146)	(19)	(570)	(93)
Included in net income (loss)	0	1	3	3
Other			0	(3)
Impact of net unrealized investment gains (losses)	40	14	174	55
Net unrealized investment gains (losses) excluding credit losses	(307)	97	(307)	97
Net unrealized investment gains (losses) with credit losses	0	0	0	0
Ending balance	(307)	97	(307)	97
Fixed maturities | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Unrealized Investment Gains Losses All Other | DAC
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Net unrealized investment gains (losses) with credit losses	0	0	0	0
Fixed maturities | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Unrealized Investment Gains Losses All Other | Policyholders’ Liabilities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Net unrealized investment gains (losses) with credit losses	0	0	0	0
Fixed maturities | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Unrealized Investment Gains Losses All Other | Deferred Income Tax Asset (Liability)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Net unrealized investment gains (losses) with credit losses	$ 0	$ 0	$ 0	$ 0