Investments - Schedule of Other investments by Asset Type (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Investments [Line Items]
Other investments	$ 1,608	$ 1,728
Bank loans, net
Investments [Line Items]
Other investments	679	686
Real estate
Investments [Line Items]
Other investments	700	813
Policy loans
Investments [Line Items]
Other investments	122	120
Derivatives
Investments [Line Items]
Other investments	4	1
Other
Investments [Line Items]
Other investments	$ 103	$ 108