Supplemental Disclosure to Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2018	Dec. 01, 2019	Dec. 01, 2018
Summary of cash and cash equivalents at the end of the year:
Cash and cash equivalents	$ 682,529	$ 454,858	$ 575,119
Interest paid, net of amounts capitalized	866	(1,327)	8,338
Income taxes paid	17,253	4,479	11,949
Income taxes refunded	44,336	221	220
Supplemental disclosure of non-cash activities:
Reclassification of federal tax refund from deferred tax assets to receivables	82,617	0	0
Increase in operating lease right-of-use assets and lease liabilities due to adoption of ASC 842		0	0	$ 31,199
Inventories:	3,897,482	3,704,602
Increase in property and equipment, net due to adoption of ASC 606	65,547	65,043
Increase (decrease) in consolidated inventories not owned	7,254	(9,634)	16,098
Inventories acquired through seller financing	21,712	8,967	44,586
Homebuilding:
Summary of cash and cash equivalents at the end of the year:
Cash and cash equivalents	681,190	453,814	574,359
Financial services
Summary of cash and cash equivalents at the end of the year:
Cash and cash equivalents	1,339	1,044	760
Inspirada Builders LLC [Member]
Supplemental disclosure of non-cash activities:
Increase in inventories due to distributions of land and land development from an unconsolidated joint venture	9,350	$ 9,662	17,637
Accounting Standards Update 2014-09 [Member]
Supplemental disclosure of non-cash activities:
Inventories:	0		0		$ (35,288)
Increase in property and equipment, net due to adoption of ASC 606	$ 0		$ 0		$ 31,194