INVESTMENTS - Investments in Variable Interest Entities Not Consolidated (Details) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Fixed maturity securities, available-for-sale		$ 70,130	$ 73,290
Other investments		6,677	4,530
Assets		124,742	126,724
Variable Interest Entity, Not Consolidated
Variable Interest Entity [Line Items]
Fixed maturity securities, available-for-sale		6,486	6,424
Other investments	[1]	395	369
Assets		$ 6,881	$ 6,793

[1] Consists entirely of alternative investments in limited partnerships