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Basis of Presentation and Significant Accounting Policies (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	May 31, 2019	May 31, 2018	May 31, 2019	May 31, 2018	Nov. 30, 2018	Dec. 01, 2018
Cash equivalents	$ 27,400		$ 27,400		$ 385,200
Other comprehensive income (loss)	47,500	$ 57,300	77,500	$ (13,900)
Retained earnings	1,981,795		1,981,795		1,897,168	$ 1,908,778
Customer deposits	24,100		24,100		$ 19,500
Financial Service [Member]
Contract assets	19,900		19,900			19,700
Financial Service [Member] \| Product Concentration Risk [Member] \| Total Revenues [member]
Percentage of total revenue					0.30%
Home Building [Member] \| Product Concentration Risk [Member] \| Total Revenues [member]
Percentage of total revenue					99.70%
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] \| Accounting Standards Update 2014-09 [Member]
Retained earnings	$ 10,460		$ 10,460			11,610
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] \| Accounting Standards Update 2014-09 [Member] \| Financial Service [Member]
Contract assets						$ 19,728