INVESTMENTS - Investments in Variable Interest Entities Not Consolidated (Details) - USD ($) $ in Millions		Sep. 30, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Fixed maturity securities, available-for-sale, amortized cost		$ 69,161	$ 75,469
Fixed maturity securities, available-for-sale		69,801	75,741
Other investments		5,241	4,070
Assets, fair value		79,159	82,924
Variable Interest Entity, Not Consolidated
Variable Interest Entity [Line Items]
Fixed maturity securities, available-for-sale, amortized cost		5,741	3,998
Fixed maturity securities, available-for-sale		6,196	4,259
Other investments	[1]	351	381
Other investments, fair value	[1]	351	381
Assets, amortized cost		6,092	4,379
Assets, fair value		$ 6,547	$ 4,640

[1] Consists entirely of alternative investments in limited partnerships