Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Grantor Stock Ownership Trust	Treasury Stock	Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance, shares at Nov. 30, 2016		116,224,000	(9,432,000)	(21,720,000)
Beginning balance at Nov. 30, 2016	$ 1,723,145	$ 116,224	$ (102,300)	$ (535,402)	$ 696,938	$ 1,563,742	$ (16,057)
Net income	180,595					180,595
Other comprehensive income (loss), net of tax	(867)						(867)
Dividends on common stock	$ (8,642)					(8,642)
Employee stock options/other, shares	1,650,360	1,652,000
Employee stock options/other	$ 24,120	$ 1,652			22,468
Stock awards, shares		70,000	534,000	28,000
Stock awards	0	$ 70	$ 5,791	$ 695	(6,556)
Stock-based compensation	14,633				14,633
Stock repurchases, shares				(329,000)
Tax payments associated with stock-based compensation awards	(6,673)			$ (6,673)
Ending balance, shares at Nov. 30, 2017		117,946,000	(8,898,000)	(22,021,000)
Ending balance at Nov. 30, 2017	1,926,311	$ 117,946	$ (96,509)	$ (541,380)	727,483	1,735,695	(16,924)
Net income	170,365					170,365
Other comprehensive income (loss), net of tax	7,359						7,359
Dividends on common stock	$ (8,892)					(8,892)
Employee stock options/other, shares	1,195,926	1,196,000
Employee stock options/other	$ 20,011	$ 1,196			18,815
Stock awards, shares		54,000	741,000	48,000
Stock awards	0	$ 54	$ 8,037	$ 498	(8,589)
Stock-based compensation	15,861				15,861
Stock repurchases, shares				(334,000)
Tax payments associated with stock-based compensation awards	(8,476)			$ (8,476)
Ending balance, shares at Nov. 30, 2018		119,196,000	(8,157,000)	(24,113,000)
Ending balance at Nov. 30, 2018	2,087,500	$ 119,196	$ (88,472)	$ (584,397)	753,570	1,897,168	(9,565)
Stock Repurchased and Retired During Period, Shares				(1,806,000)
Stock Repurchased and Retired During Period, Value	(35,039)			$ (35,039)
Net income	268,775					268,775
Other comprehensive income (loss), net of tax	(5,941)						(5,941)
Dividends on common stock	$ (20,370)					(20,370)
Employee stock options/other, shares	2,300,004	2,341,000
Employee stock options/other	$ 30,524	$ 2,341			28,183
Stock awards, shares		56,000	526,000	27,000
Stock awards	0	$ 56	$ 5,714	$ 341	(6,111)
Stock-based compensation	18,312				18,312
Stock repurchases, shares				(270,000)
Tax payments associated with stock-based compensation awards	(7,288)			$ (7,288)
Ending balance, shares at Nov. 30, 2019		121,593,000	(7,631,000)	(24,356,000)
Ending balance at Nov. 30, 2019	$ 2,383,122	$ 121,593	$ (82,758)	$ (591,344)	$ 793,954	$ 2,157,183	$ (15,506)