Investments Of Operating Entities And Consolidated Funds - Operating Entities - Other Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2020		Dec. 31, 2019
Investment Holdings [Line Items]
Other investments	$ 204,610		$ 185,722
Portfolio Funds
Investment Holdings [Line Items]
Other investments	123,787	[1]	114,504
Carried interest
Investment Holdings [Line Items]
Other investments	47,343	[1]	30,360
Equity Method Investments
Investment Holdings [Line Items]
Other investments	$ 33,480		$ 40,858

[1] In accordance with US GAAP, certain investments are measured at fair value using the net asset value per share (or its equivalent) as a practical expedient. Carried interest in portfolio funds have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the condensed consolidated statement of financial condition.