Investment Information - Investments accounted for using the equity method (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	$ 5,244	$ 4,566
Private equity
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	1,737	1,175
Credit related funds
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	1,366	1,258
Real estate
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	721	666
Lending
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	474	597
Fixed income
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	377	277
Infrastructure
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	323	320
Equity securities
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	177	178
Energy
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	$ 69	$ 95