Investment Information - Equity method investments and investments in affiliates (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	$ 5,980	$ 4,566
Equity in net income (loss) of investment funds accounted for using the equity method	580	278	$ 115
Balance sheet:
Total assets	70,906	58,906	47,990
Total liabilities	50,086	40,551	35,069
Income statement:
Total revenues	17,440	13,634	9,613
Net income	4,312	4,442	1,482
Private equity
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	1,915	1,175
Credit related funds
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	1,487	1,258
Real estate
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	869	666
Lending
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	616	597
Infrastructure
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	425	320
Fixed income
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	384	277
Equity Funds
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	217	178
Energy
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	67	95
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Balance sheet:
Invested assets	113,977	91,534
Total assets	132,647	108,952
Total liabilities	36,614	33,901
Net assets	96,033	75,051
Income statement:
Total revenues	19,160	7,766	12,305
Total expenses	7,269	7,174	5,374
Net income	$ 11,891	$ 592	$ 6,931