Investments - Schedule of Other Investments by Asset Type (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Investment [Line Items]
Other investments	$ 1,055	$ 1,728
Bank loans, net
Investment [Line Items]
Other investments	224	686
Real estate
Investment [Line Items]
Other investments	709	813
Policy loans
Investment [Line Items]
Other investments	119	120
Derivatives
Investment [Line Items]
Other investments	1	1
Other
Investment [Line Items]
Other investments	$ 2	$ 108