Investment Information - Investments accounted for using the equity method (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	$ 6,852	$ 6,453
Private equity
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	2,485	2,397
Credit related funds
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	1,643	1,616
Real estate
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	818	767
Lending
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	649	558
Fixed income
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	534	501
Infrastructure
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	349	346
Equities
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	324	231
Energy
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	$ 50	$ 37