Consolidated Company-Sponsored Investment Funds - Offsetting of Derivative Assets and Liabilities (Details) - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Derivatives
Cash Collateral Received	$ (3,700,000)	$ (10,400,000)
Derivatives
Cash Collateral Pledged	(13,400,000)	(5,200,000)
VIEs
Derivatives
Gross Amounts of Recognized Assets	18,016,000	101,000
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	18,016,000	101,000
Financial Instruments Collateral	0	0
Cash Collateral Received	(28,000)	(2,000)
Net Amount	17,988,000	99,000
Derivatives
Gross Amounts of Recognized Liabilities	18,039,000	85,000
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Condition	18,039,000	85,000
Financial Instruments Collateral	0	0
Cash Collateral Pledged	(722,000)	(85,000)
Net Amount	17,317,000	0
VOEs
Derivatives
Gross Amounts of Recognized Assets	197,000	11,483,000
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	197,000	11,483,000
Financial Instruments Collateral	0	0
Cash Collateral Received	0	0
Net Amount	197,000	11,483,000
Derivatives
Gross Amounts of Recognized Liabilities	184,000
Gross Amounts Offset in the Statement of Financial Condition	0
Net Amounts of Liabilities Presented in the Statement of Financial Condition	184,000
Financial Instruments Collateral	0
Cash Collateral Pledged	0	$ 0
Net Amount	$ 184,000