Investments of Operating Entities and Consolidated Funds - Operating Entities - Variable Interest Entities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Assets	$ 8,426,027	$ 8,748,814
Liabilities	7,094,554	7,452,460
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets	9,100,000	9,700,000
Liabilities	692,400	744,500
Variable Interest Entity, Nonconsolidated, Comparison of Carrying Amount of Assets and Liabilities to Maximum Loss Exposure	155,100	165,500
Maximum exposure regarding nonconsolidated variable interest entities	$ 224,700	$ 233,600