Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Nov. 30, 2016	Nov. 30, 2015
Income Tax Disclosure [Abstract]
Compensation and benefits	$ 285,542	$ 253,291
Net operating loss	11,021	7,862
Long-term debt	60,707	95,765
Accrued expenses and other	124,269	113,259
Sub-total	481,539	470,177
Valuation allowance	(9,464)	(13,337)
Total deferred tax assets	472,075	456,840
Amortization of intangibles	107,474	103,560
Other	21,630	26,345
Total deferred tax liabilities	129,104	129,905
Net deferred tax asset, included in Other assets	$ 342,971	$ 326,935