Investments of Operating Entities and Consolidated Funds - Lehman Claims (Details) (USD $)																1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Operating Entities	Dec. 31, 2012 Operating Entities	Dec. 31, 2013 Operating Entities Lehman claims, at fair value	Nov. 30, 2013 Operating Entities Lehman claims, at fair value	Jun. 30, 2013 Operating Entities Lehman claims, at fair value	Dec. 31, 2012 Operating Entities Lehman claims, at fair value	Nov. 30, 2012 Operating Entities Lehman claims, at fair value	Nov. 02, 2012 Operating Entities Lehman claims, at fair value	Sep. 15, 2008 Operating Entities Lehman claims, at fair value	Dec. 31, 2013 Consolidated Funds	Dec. 31, 2012 Consolidated Funds	Dec. 31, 2013 Consolidated Funds Lehman claims, at fair value	Dec. 31, 2012 Consolidated Funds Lehman claims, at fair value	Sep. 26, 2013 Enterprise Master Lehman claims, at fair value	Feb. 29, 2012 Enterprise Master Lehman claims, at fair value	Dec. 31, 2011 Enterprise Master Lehman claims, at fair value	Jul. 31, 2010 Enterprise Master Lehman claims, at fair value	Jun. 30, 2010 Enterprise Master Lehman claims, at fair value	Dec. 31, 2013 Enterprise Master Lehman claims, at fair value	Feb. 28, 2013 Enterprise Master Lehman claims, at fair value	Nov. 30, 2012 Enterprise Master Lehman claims, at fair value	Nov. 02, 2012 Enterprise Master Lehman claims, at fair value	Sep. 15, 2008 Enterprise Master Lehman claims, at fair value	Dec. 31, 2013 Enterprise Master Trust Assets	Dec. 31, 2013 Enterprise Master Foreign Denominated Assets	Dec. 31, 2013 Enterprise Master Cash	Jul. 31, 2013 Enterprise Master Cash	Dec. 31, 2013 Enterprise LP Lehman claims, at fair value
Investment Holdings [Line Items]
Initial value											$ 1,000,000														$ 24,300,000			$ 4,900,000	$ 4,900,000
Unsecured claim										900,000														1,300,000
Percent of client's Best Claim																					105.00%
Distribution percent withheld for tax																					30.00%
Value of Best Claim																					800,000
Dividend percent received						23.70%	43.30%		25.20%														25.20%
Dividend amount received						200,000	400,000		200,000														300,000
Total Dividend Amount Received					900,000
Total Dividend percent received					92.20%
Other Investments, Claim Settlement Sold																						1,300,000
Assets returned																		2,400,000		9,500,000
Proceeds from sale of returned assets																			10,700,000
Distributions of proceeds from returned assets																14,900,000	2,900,000
Tax Withholding on Distribution of Proceeds from Sale of Returned Assets																1,000,000
Other investments	99,483,000	84,930,000	99,483,000	84,930,000	378,000			706,000				187,480,000	204,205,000	4,842,000	14,124,000
Other Investments, claim to trust assets held by LBIE through Lehman Brothers																					10,600,000
Percentage of securities liquidated at LBI																					90.00%
Distributions of client's Best Claim																100.00%
Other Investments, initial claim current value																					7,000,000									4,800,000
Claim Resolution Agreement fee																										1.00%	1.00%
Other Investments, not within control of LBIE																											$ 5,000,000
Recoverable claims assigned to variable interest entities																					100.00%
Percentage of Net Equity Claim					131.50%