INVESTMENTS - Other Investments (Details) - USD ($) $ in Millions		Sep. 30, 2023	Dec. 31, 2022
Investment Holdings [Line Items]
Other investments		$ 5,241	$ 4,070
Policy loans
Investment Holdings [Line Items]
Other investments		201	214
Short-term investments
Investment Holdings [Line Items]
Other investments	[1]	2,288	1,532
Limited partnerships
Investment Holdings [Line Items]
Other investments		2,629	2,290
Real estate owned
Investment Holdings [Line Items]
Other investments		89	0
Other
Investment Holdings [Line Items]
Other investments		$ 34	$ 34

[1] Includes securities lending collateral