Stockholders' Equity (Details) - USD ($) $ in Thousands		3 Months Ended
	Dec. 01, 2019	Feb. 29, 2020	Feb. 28, 2019	Dec. 01, 2018
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 2,383,122	$ 2,383,122	$ 2,087,500
Cumulative effect of adoption of ASC 842		1,510		$ 11,610
Net income		59,748	30,011
Dividends on common stock		$ (8,233)	(2,266)
Employee stock options/other (in shares)		(698,372)
Employee stock options/other		$ 8,226	832
Stock awards		0	0
Stock-based compensation		4,950	4,152
Tax payments associated with stock-based compensation awards		(6,219)	(3,342)
Ending balance		$ 2,443,104	$ 2,128,497
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	(121,593,000)	(121,593,000)	(119,196,000)
Beginning balance	$ 121,593	$ 121,593	$ 119,196
Employee stock options/other (in shares)		(698,000)	(62,000)
Employee stock options/other		$ 698	$ 62
Ending balance (in shares)		(122,291,000)	(119,258,000)
Ending balance		$ 122,291	$ 119,258
Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	793,954	793,954	753,570
Employee stock options/other		7,528	770
Stock awards		(3,012)	(3,151)
Stock-based compensation		4,950	4,152
Ending balance		803,420	755,341
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	2,157,183	2,157,183	1,897,168
Cumulative effect of adoption of ASC 842				$ 11,610
Net income		59,748	30,011
Dividends on common stock		(8,233)	(2,266)
Ending balance		2,211,851	1,936,523
Accumulated Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ (15,506)	(15,506)	(9,565)
Ending balance		$ (17,149)	$ (9,565)
Grantor Stock Ownership Trust
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	(7,631,000)	(7,631,000)	(8,157,000)
Beginning balance	$ (82,758)	$ (82,758)	$ (88,472)
Stock awards (in shares)		(314,000)	(297,000)
Stock awards		$ 3,399	$ 3,226
Ending balance (in shares)		(7,317,000)	(7,860,000)
Ending balance		$ (79,359)	$ (85,246)
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	(24,356,000)	(24,356,000)	(24,113,000)
Beginning balance	$ (591,344)	$ (591,344)	$ (584,397)
Stock awards (in shares)		(15,000)	(4,000)
Stock awards		$ (387)	$ (75)
Tax payments associated with stock-based compensation awards (in shares)		(155,000)	(147,000)
Tax payments associated with stock-based compensation awards		$ (6,219)	$ (3,342)
Ending balance (in shares)		(24,526,000)	(24,264,000)
Ending balance		$ (597,950)	$ (587,814)
Accounting Standards Update 2016-02 [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect on Retained Earnings, Net of Tax	1,500
Accounting Standards Update 2016-02 [Member] | Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of adoption of ASC 842	1,510
Accounting Standards Update 2018-02 [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect on Retained Earnings, Net of Tax	1,600
Accounting Standards Update 2018-02 [Member] | Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect on Retained Earnings, Net of Tax	1,643
Accounting Standards Update 2018-02 [Member] | Accumulated Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect on Retained Earnings, Net of Tax	$ (1,643)