DAC AND POLICYHOLDER BONUS INTEREST CREDITS - Rollforward of DAC Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	$ 3,816	$ 4,222	$ 4,959
Balance, beginning of year	3,816	4,225
Capitalization of commissions, sales and issue expenses	724	564	646
Amortization:
Impact of assumptions updates and model changes	19	(866)	77
All other	(475)	(467)	(597)
Total amortization	(456)	(1,333)	(520)
Change in unrealized investment gains (losses)	183	360	(863)
Balance, end of Year	4,267	3,816	4,222
Balance, end of year		3,816	4,225
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred policy acquisition costs	$ 4,267	3,816	4,222
Accounting Standards Update 2016-13
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year		$ 3
Amortization:
Balance, end of Year			3
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred policy acquisition costs			$ 3