Consolidated Company-Sponsored Investment Funds - Additional Information (Details)	3 Months Ended
	Mar. 31, 2026 USD ($) investment	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)
Derivative [Line Items]
Net gains on derivative instruments	$ 3,802,000	$ (12,776,000)
Cash collateral payable to trade counterparties	6,800,000		$ 5,500,000
Cash collateral received	13,000,000.0		10,300,000
Net assets			51,300,000,000
Maximum risk of loss in investment in VIEs			40,400,000
Advisory fee receivables	155,224,000		139,755,000
VIEs
Derivative [Line Items]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net	3,400,000		0
Net gains on derivative instruments	(4,600,000)	(100,000)
Cash collateral payable to trade counterparties	100,000		0
Delivery of cash collateral	3,600,000		500,000
Cash collateral received	3,609,000		492,000
VOEs
Derivative [Line Items]
Net gains on derivative instruments	0	$ 0
Cash collateral payable to trade counterparties	0		0
Futures, forwards and swaps held	0		0
Cash collateral received	0		0
Non-consolidated VIEs
Derivative [Line Items]
Net assets	50,800,000,000
Maximum risk of loss in investment in VIEs	46,100,000
Advisory fee receivables	$ 86,400,000		105,100,000
Seed capital
Derivative [Line Items]
Number of deconsolidated funds | investment	1
Seed investment, deconsolidated amount			$ 4,500,000