Related Party Transactions - Summary of Interest Income, Other Revenues and Investment Income to Private Equity Related Funds (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Private Equity Related Funds [Member]
Related Party Transaction [Line Items]
Other revenues and investment income (loss)	$ 947	$ (9,036)	$ (24,212)	$ (11,459)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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