Related Party Transactions - Additional Information (Detail) (USD $)				3 Months Ended	6 Months Ended	9 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended		3 Months Ended		9 Months Ended
	Aug. 31, 2013	Jul. 01, 2013	May 01, 2013	Aug. 31, 2013 Successor [Member]	Aug. 31, 2013 Successor [Member]	Aug. 31, 2013 Successor [Member]	Aug. 31, 2013 Successor [Member] Private Equity Related Funds [Member]	Aug. 31, 2013 Successor [Member] Leucadia [Member]	Aug. 31, 2013 Successor [Member] Leucadia [Member]	Feb. 28, 2013 Predecessor [Member]	Aug. 31, 2012 Predecessor [Member]	Aug. 31, 2012 Predecessor [Member]	Nov. 30, 2012 Predecessor [Member]	Nov. 30, 2012 Predecessor [Member] Private Equity Related Funds [Member]	Feb. 28, 2013 Predecessor [Member] Leucadia [Member]	Aug. 31, 2012 Predecessor [Member] Leucadia [Member]	Aug. 31, 2012 Predecessor [Member] Leucadia [Member]
Related Party Transaction [Line Items]
Equity investments loans in related funds							$ 80,900,000							$ 104,200,000
Purchase commitments from Bercadia Commercial Mortgage, LLC						169,600,000							411,600,000
Loans outstanding to certain employees				14,000,000	14,000,000	14,000,000							16,300,000
Commissions for conducting brokerage services				138,736,000	285,584,000					131,083,000	119,200,000	358,495,000			5,000.0	1,500,000	9,800,000
Earnings associated with their investment								65,000.0	61,000.0							42,000.0	5,300,000
Asset Management Investment	$ 50,000,000	$ 25,000,000	$ 25,000,000