INVESTMENTS - Net unrealized Gains (Losses) on Investments within AOCI (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Net Investment Income [Line Items]
Net unrealized gains on investments	$ 241
Fixed maturity securities | Fixed Maturity Securities Available For Sale Without An Allowance
Net Investment Income [Line Items]
Net unrealized gains on investments	216
Derivatives designated as cash flow hedges
Net Investment Income [Line Items]
Net unrealized gains on investments	25
Other invested assets
Net Investment Income [Line Items]
Net unrealized gains on investments	$ 0