Consolidated Company-Sponsored Investment Funds - Additional Information (Details)	3 Months Ended
	Mar. 31, 2023 USD ($) fund	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Derivative [Line Items]
Gains (losses) on derivative instruments	$ (10,494,000)	$ 19,732,000
Cash collateral payable to trade counterparties	7,900,000		$ 8,400,000
Cash collateral received	10,000,000		4,200,000
Advisory fee receivables	139,695,000		127,040,000
VIEs
Derivative [Line Items]
Futures, forwards and swaps held	12,600,000		14,000,000
Gains (losses) on derivative instruments	1,700,000	$ 500,000
Cash collateral payable to trade counterparties	1,689,000		2,731,000
Cash collateral received	4,634,000		5,444,000
Non-consolidated VIEs
Derivative [Line Items]
Net assets	49,000,000,000		46,400,000,000
Maximum risk of loss in investment in VIEs	8,800,000		5,700,000
Advisory fee receivables	57,500,000		54,200,000
VOEs
Derivative [Line Items]
Futures, forwards and swaps held	0
Cash collateral payable to trade counterparties	0
Cash collateral received	$ 0
Seed capital
Derivative [Line Items]
Number of deconsolidated funds | fund	1
Seed investment, deconsolidated amount			$ 1,700,000