REINSURANCE - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Reinsurance, per life, single lives, amount retained	$ 25
Reinsurance, per life, joint lives, amount retained	$ 30
Reinsurance, percentage of excess reinsured	100.00%
GMDB | Third-party
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Exposure reinsured percentage	47.60%	2.60%
GMIB | Third-party
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Exposure reinsured percentage	59.80%	13.40%