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Stockholders' Equity (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
Stockholders' Equity (Details) - USD ($) $ in Thousands	Dec. 01, 2019	May 31, 2020	May 31, 2019	May 31, 2020	May 31, 2019	Dec. 01, 2018
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 2,383,122	$ 2,443,104	$ 2,128,497	$ 2,383,122	$ 2,087,500
Cumulative effect of adoption of ASC 842	$ 1,510
Net income		51,989	47,461	111,737	77,472
Dividends on common stock		(8,098)	(2,189)	$ (16,331)	(4,455)
Employee stock options/other (in shares)				(708,372)
Employee stock options/other		178	15,630	$ 8,404	16,462
Stock awards		0	0	0	0
Stock-based compensation		3,181	5,814	8,131	9,966
Tax payments associated with stock-based compensation awards			(3)	(6,219)	(3,345)
Ending balance		$ 2,490,354	$ 2,195,210	$ 2,490,354	$ 2,195,210
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	(121,593,000)	(122,291,000)	(119,258,000)	(121,593,000)
Beginning balance	$ 121,593	$ 122,291	$ 119,258	$ 121,593
Employee stock options/other (in shares)		(11,000)	(1,036,000)	(709,000)	(1,098,000)
Employee stock options/other		$ 11	$ 1,036	$ 709	$ 1,098
Stock awards (in shares)		(68,000)	(56,000)	(68,000)	(56,000)
Stock awards		$ 68	$ 56	$ 68	$ 56
Ending balance (in shares)		(122,370,000)	(120,350,000)	(122,370,000)	(120,350,000)
Ending balance		$ 122,370	$ 120,350	$ 122,370	$ 120,350
Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	793,954	803,420	755,341	793,954
Employee stock options/other		167	14,594	7,695	15,364
Stock awards		(68)	(56)	(3,080)	(3,207)
Stock-based compensation		3,181	5,814	8,131	9,966
Ending balance		806,700	775,693	806,700	775,693
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	2,157,183	2,211,851	1,936,523	2,157,183
Net income		51,989	47,461	111,737	77,472
Dividends on common stock		(8,098)	(2,189)	(16,331)	(4,455)
Ending balance		2,255,742	1,981,795	2,255,742	1,981,795
Accumulated Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ (15,506)	(17,149)	(9,565)	(15,506)
Ending balance		$ (17,149)	$ (9,565)	$ (17,149)	$ (9,565)
Grantor Stock Ownership Trust
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	(7,631,000)	(7,317,000)	(7,860,000)	(7,631,000)
Beginning balance	$ (82,758)	$ (79,359)	$ (85,246)	$ (82,758)
Stock awards (in shares)				(314,000)	(297,000)
Stock awards				$ 3,399	$ 3,226
Ending balance (in shares)		(7,317,000)	(7,860,000)	(7,317,000)	(7,860,000)
Ending balance		$ (79,359)	$ (85,246)	$ (79,359)	$ (85,246)
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	(24,356,000)	(24,526,000)	(24,264,000)	(24,356,000)
Beginning balance	$ (591,344)	$ (597,950)	$ (587,814)	$ (591,344)
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			$ (3)	$ (6,219)	$ (3,345)
Ending balance (in shares)		(24,526,000)	(24,264,000)	(24,526,000)	(24,264,000)
Ending balance		$ (597,950)	$ (587,817)	$ (597,950)	$ (587,817)
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)
Accounting Standards Update 2014-09 [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of adoption of ASC 842						$ 11,610
Accounting Standards Update 2014-09 [Member] \| Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of adoption of ASC 842						$ 11,610