Consolidated Company-Sponsored Investment Funds - Offsetting of Derivative Assets and Liabilities (Details) - USD ($)	Mar. 31, 2025	Dec. 31, 2024
Derivatives
Cash Collateral Received	$ (7,200,000)	$ (10,400,000)
Derivatives
Cash Collateral Pledged	(11,600,000)	(5,200,000)
VIEs
Derivatives
Gross Amounts of Recognized Assets	109,000	101,000
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	109,000	101,000
Financial Instruments Collateral	0	0
Cash Collateral Received	(21,000)	(2,000)
Net Amount	88,000	99,000
Derivatives
Gross Amounts of Recognized Liabilities	140,000	85,000
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Condition	140,000	85,000
Financial Instruments Collateral	0	0
Cash Collateral Pledged	(140,000)	(85,000)
Net Amount	0	0
VOEs
Derivatives
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 Collateral		0
Cash Collateral Received	0	0
Net Amount		11,483,000
Derivatives
Cash Collateral Pledged	$ 0	$ 0