Investment Information - Equity method investments and investments in affiliates (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	$ 4,566	$ 3,774
Equity in net income (loss) of investment funds accounted for using the equity method	278	115	$ 366
Balance sheet:
Total assets	58,906	47,990	45,101
Total liabilities	40,551	35,069	31,546
Income statement:
Total revenues	13,634	9,613	9,248
Net income	4,442	1,482	2,239
Credit related funds
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	1,258	1,136
Private equity
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	1,175	917
Real estate
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	666	535
Lending
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	597	531
Infrastructure
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	320	245
Fixed income
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	277	130
Equity Funds
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	178	169
Energy
Schedule of Equity Method Investments [Line Items]
Investments accounted for using the equity method	95	111
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Balance sheet:
Invested assets	91,534	74,961
Total assets	108,952	88,063
Total liabilities	33,901	27,553
Net assets	75,051	60,510
Income statement:
Total revenues	7,766	12,305	11,786
Total expenses	7,174	5,374	3,239
Net income	$ 592	$ 6,931	$ 8,547