Consolidated Company-Sponsored Investment Funds - Offsetting of Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Derivatives
Cash Collateral Received	$ (7,900)	$ (8,400)
Derivatives
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Broker-Dealer, Payable to Other Broker-Dealer and Clearing Organization	Broker-Dealer, Payable to Other Broker-Dealer and Clearing Organization
Cash Collateral Pledged	$ (10,000)	$ (4,200)
VIEs
Derivatives
Gross Amounts of Recognized Assets	3,670	7,552
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	3,670	7,552
Financial Instruments Collateral	0	0
Cash Collateral Received	(1,689)	(2,731)
Net Amount	1,981	4,821
Derivatives
Gross Amounts of Recognized Liabilities	16,311	21,540
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Condition	16,311	21,540
Financial Instruments Collateral	0	0
Cash Collateral Pledged	(4,634)	(5,444)
Net Amount	$ 11,677	$ 16,096