INVESTMENTS - Net Unrealized Gains (Losses) (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	$ 3,501	$ 8,589	$ 8,706	$ 11,643
Ending balance	398	8,640	398	8,640
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	(6,647)	4,931	4,462	8,230
Net investment gains (losses) arising during the period	(3,811)	(362)	(15,466)	(3,057)
Included in Net income (loss)	327	(165)	881	(739)
Excluded from net income (loss)	0	0	0	0
Other	0	0	0	(31)
Impact of net unrealized investment gains (losses)	0	0	0	0
Net unrealized investment gains (losses) excluding OTTI losses	(10,131)	4,404	(10,123)	4,403
Net unrealized investment gains (losses) with OTTI losses	1	(1)	(7)	0
Ending balance	(10,130)	4,403	(10,130)	4,403
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	851	(389)	(284)	(466)
Impact of net unrealized investment gains (losses)	386	28	1,520	105
Net unrealized investment gains (losses) excluding OTTI losses	1,237	(361)	1,236	(361)
Ending balance	1,237	(361)	1,237	(361)
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	(250)	(1,037)	(977)	(1,814)
Impact of net unrealized investment gains (losses)	41	55	768	832
Net unrealized investment gains (losses) excluding OTTI losses	(209)	(982)	(209)	(982)
Ending balance	(209)	(982)	(209)	(982)
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	1,270	(736)	(673)	(1,250)
Impact of net unrealized investment gains (losses)	641	93	2,583	607
Net unrealized investment gains (losses) excluding OTTI losses	1,911	(643)	1,910	(643)
Ending balance	1,911	(643)	1,911	(643)
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	(4,776)	2,769	2,528	4,700
Net investment gains (losses) arising during the period	(3,811)	(362)	(15,466)	(3,057)
Included in Net income (loss)	327	(165)	881	(739)
Excluded from net income (loss)	0	0	0	0
Other	0	0	0	(31)
Impact of net unrealized investment gains (losses)	1,068	176	4,871	1,544
Net unrealized investment gains (losses) excluding OTTI losses	(7,192)	2,418	(7,186)	2,417
Net unrealized investment gains (losses) with OTTI losses	1	(1)	(5)	0
Ending balance	(7,191)	2,417	(7,191)	2,417
Fixed Maturities, AFS | 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 OTTI losses	0	0	1	0
Fixed Maturities, AFS | 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 OTTI losses	0	0	0	0
Fixed Maturities, AFS | 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 OTTI losses	$ 0	$ 0	$ 1	$ 0