Investments of Operating Entities and Consolidated Funds - Lehman Claims (Details) - Lehman claims, at fair value - USD ($) $ in Millions	Mar. 31, 2016	Sep. 15, 2008
Investment Holdings [Line Items]
Other Investments, Initial Claim		$ 1.0
Total Dividend Amount Received	$ 1.0
Total Dividend percent received	100.00%