Investment Information - Investments accounted for using the equity method (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	$ 4,983	$ 4,566
Credit related funds
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	1,562	1,175
Private equity
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	1,350	1,258
Real estate
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	693	666
Lending
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	483	597
Infrastructure
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	339	277
Fixed income
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	320	320
Equity securities
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	162	178
Energy
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	$ 74	$ 95