Consolidated Company-Sponsored Investment Funds - Summary of Offsetting of Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Derivatives
Gross Amounts of Recognized Assets	$ 12,747	$ 12,985
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	12,747	12,985
Financial Instruments Collateral	0	0
Cash Collateral Received	(4,836)	(5,547)
Net Amount	7,911	7,438
Derivatives
Gross Amounts of Recognized Liabilities	17,731	17,615
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Condition	17,731	17,615
Financial Instruments Collateral	0	0
Cash Collateral Pledged	(13,132)	(10,293)
Net Amount	4,599	7,322
VIEs
Derivatives
Gross Amounts of Recognized Assets	22,376	20,077
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	22,376	20,077
Financial Instruments Collateral	0	0
Cash Collateral Received	(260)	0
Net Amount	22,116	20,077
Derivatives
Gross Amounts of Recognized Liabilities	21,819	20,084
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Condition	21,819	20,084
Financial Instruments Collateral	0	0
Cash Collateral Pledged	(745)	(492)
Net Amount	$ 21,074	$ 19,592