Supplemental Guarantor Information (Condensed Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands		May 31, 2021	Feb. 28, 2021	Nov. 30, 2020	May 31, 2020	Feb. 29, 2020	Nov. 30, 2019
Assets
Cash and cash equivalents		$ 609,047		$ 682,529	$ 576,033		$ 454,858
Receivables		271,080		272,659
Inventories		4,272,566		3,897,482
Property and equipment, net		69,336		65,547
Other assets		115,233		125,510
Total assets		5,618,933		5,356,442
Liabilities and stockholders’ equity
Mortgages and notes payable		1,747,447		1,747,175
Stockholders' Equity Attributable to Parent		2,886,865	$ 2,748,184	2,665,769	2,490,354	$ 2,443,104	$ 2,383,122
Total liabilities and stockholders’ equity		5,618,933		5,356,442
Home Building [Member]
Assets
Cash and cash equivalents		608,069		681,190	575,006
Receivables		271,080		272,659
Inventories		4,272,566		3,897,482
Investments in unconsolidated joint ventures		45,358		46,785
Property and equipment, net		69,336		65,547
Deferred tax assets, net		199,445		231,067
Other assets		115,233		125,510
Total assets		5,581,087		5,320,240
Liabilities and stockholders’ equity
Mortgages and notes payable		1,747,447		1,747,175
Total Liabilities		2,730,126		2,688,044
Financial Service [Member]
Assets
Cash and cash equivalents		978		1,339	$ 1,027
Receivables		1,581		1,988
Investments in unconsolidated joint ventures		12,492		10,978
Other assets	[1]	22,795		21,897
Total assets		37,846		36,202
Liabilities and stockholders’ equity
Accounts payable and accrued expenses		1,942		2,629
Financial services		$ 1,942		$ 2,629

[1] Other assets at May 31, 2021 and November 30, 2020 included $22.5 million and $21.5 million, respectively, of contract assets for estimated future renewal commissions.