Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Nov. 30, 2019	Nov. 30, 2018
Deferred tax assets:
Compensation and benefits	$ 223,357	$ 240,785
Net operating loss	5,634	17,867
Long-term debt	33,097	39,623
Accrued expenses and other	71,993	65,265
Sub-total	334,081	363,540
Valuation allowance	(3,228)	(10,650)
Total deferred tax assets	330,853	352,890
Deferred tax liabilities:
Amortization of intangibles	70,373	69,095
Other	62,433	40,556
Total deferred tax liabilities	132,806	109,651
Net deferred tax asset, included in Other assets	$ 198,047	$ 243,239