Consolidated Company-Sponsored Investment Funds - Offsetting of Derivative Assets and Liabilities (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Derivative Asset [Abstract]
Cash Collateral Received	$ (10,400,000)	$ (5,700,000)
Derivative Liability [Abstract]
Cash Collateral Pledged	(5,200,000)	(7,800,000)
VIEs
Derivative Asset [Abstract]
Gross Amounts of Recognized Assets	101,000	4,902,000
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	101,000	4,902,000
Financial Instruments	0	0
Cash Collateral Received	(2,000)	(1,415,000)
Net Amount	99,000	3,487,000
Derivative Liability [Abstract]
Gross Amounts of Recognized Liabilities	85,000	2,531,000
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Condition	85,000	2,531,000
Financial Instruments	0	0
Cash Collateral Pledged	(85,000)	(1,408,000)
Net Amount	0	1,123,000
VOEs
Derivative Asset [Abstract]
Gross Amounts of Recognized Assets	11,483,000
Gross Amounts Offset in the Statement of Financial Condition	0
Net Amounts of Assets Presented in the Statement of Financial Condition	11,483,000
Financial Instruments	0
Cash Collateral Received	0	0
Net Amount	11,483,000
Derivative Liability [Abstract]
Cash Collateral Pledged	$ 0	$ 0