Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Grantor Stock Ownership Trust	Treasury Stock	Paid-in Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss
Beginning balance, shares at Nov. 30, 2017			117,946,000	(8,898,000)	(22,021,000)
Beginning balance at Nov. 30, 2017	$ 1,926,311		$ 117,946	$ (96,509)	$ (541,380)	$ 727,483	$ 1,735,695		$ (16,924)
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201409Member
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)
Stock repurchases, shares					(1,806,000)
Stock repurchases	(35,039)				$ (35,039)
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	$ 11,610	$ 119,196	$ (88,472)	$ (584,397)	753,570	1,897,168	$ 11,610	(9,565)
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)
Ending balance (Accounting Standards Update 2016-02) at Nov. 30, 2019		$ 1,510						$ 1,510
Reclassification of stranded tax effects	1,600						1,643		(1,643)
Net income	296,243						296,243
Other comprehensive income (loss), net of tax	(5,127)								(5,127)
Dividends on common stock	$ (38,065)						(38,065)
Employee stock options/other, shares	1,694,767		1,696,000		17,000
Employee stock options/other	$ 16,058		$ 1,696		$ 421	13,941
Stock awards, shares			68,000	507,000	(15,000)
Stock awards	0		$ 68	$ 5,493	$ (441)	(5,120)
Stock-based compensation	21,531					21,531
Stock repurchases, shares					(241,000)
Tax payments associated with stock-based compensation awards	$ (9,503)				$ (9,503)
Retirement of treasury stock, shares	(23,487,966)		(23,488,000)		23,488,000
Retirement of treasury stock			$ (23,488)		$ 573,106		(549,618)
Ending balance, shares at Nov. 30, 2020			99,869,000	(7,124,000)	(1,107,000)
Ending balance at Nov. 30, 2020	$ 2,665,769		$ 99,869	$ (77,265)	$ (27,761)	$ 824,306	$ 1,868,896		$ (22,276)