Consolidated Company-Sponsored Investment Funds - Offsetting of Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Derivative Asset [Abstract]
Cash Collateral Received	$ (7,800)	$ (2,900)
Derivative Liability [Abstract]
Cash Collateral Pledged	(6,500)	(5,600)
VIEs
Derivative Asset [Abstract]
Gross Amounts of Recognized Assets	4,402	5,887
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	4,402	5,887
Financial Instruments Collateral	0	0
Cash Collateral Received	(1,524)	(904)
Net Amount	2,878	4,983
Derivative Liability [Abstract]
Gross Amounts of Recognized Liabilities	18,940	18,342
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Condition	18,940	18,342
Financial Instruments Collateral	0	0
Cash Collateral Pledged	(2,486)	(1,824)
Net Amount	$ 16,454	$ 16,518