Consolidated Company-Sponsored Investment Funds - Offsetting of Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Derivative Asset [Abstract]
Cash Collateral Received	$ (9,200)	$ (2,900)
Derivative Liability [Abstract]
Cash Collateral Pledged	(3,000)	(5,600)
VIEs
Derivative Asset [Abstract]
Gross Amounts of Recognized Assets	2,043	5,887
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	2,043	5,887
Financial Instruments Collateral	0	0
Cash Collateral Received	(871)	(904)
Net Amount	1,172	4,983
Derivative Liability [Abstract]
Gross Amounts of Recognized Liabilities	18,620	18,342
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Condition	18,620	18,342
Financial Instruments Collateral	0	0
Cash Collateral Pledged	(4,001)	(1,824)
Net Amount	$ 14,619	$ 16,518