INVESTMENTS - Other Investments (Details) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Investment Holdings [Line Items]
Other investments		$ 6,677	$ 4,530
Policy loans
Investment Holdings [Line Items]
Other investments		203	214
Short-term investments
Investment Holdings [Line Items]
Other investments	[1]	3,341	1,304
Limited partnerships
Investment Holdings [Line Items]
Other investments	[2]	2,838	2,750
Real estate owned
Investment Holdings [Line Items]
Other investments		253	227
Other
Investment Holdings [Line Items]
Other investments		$ 42	$ 35

[1] Includes securities lending collateral

[2] Includes tax credit investments and asset classes such as private equity and real estate funds