Income Taxes (Components of Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2017
Federal
Current	$ (200)	$ (3,600)	$ (2,800)
Deferred	(53,800)	(170,700)	(86,300)
Income tax expense	(54,000)	(174,300)	(89,100)
State
Current	(3,700)	(4,800)	(3,000)
Deferred	(21,700)	(18,500)	(17,300)
Income tax expense	(25,400)	(23,300)	(20,300)
Total
Current	(3,900)	(8,400)	(5,800)
Deferred	(75,500)	(189,200)	(103,600)
Income tax expense	$ (79,400)	$ (197,600)	$ (109,400)