Financial Services (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Nov. 30, 2019	Aug. 31, 2019	May 31, 2019	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2017	Dec. 01, 2018	Nov. 30, 2016
Financial services:
Total Revenues									$ 4,552,747	$ 4,547,002	$ 4,368,529
Expenses
Equity in income (loss) of unconsolidated joint ventures									10,681	9,367	2,825
Pretax income (loss)	$ 164,967	$ 91,936	$ 56,761	$ 34,511	$ 128,936	$ 114,676	$ 78,308	$ 46,045	348,175	367,965	289,995
Assets
Cash and cash equivalents	454,858				575,119				454,858	575,119	720,861		$ 593,000
Receivables	249,055				292,830				249,055	292,830
Other assets	83,041				83,100				83,041	83,100
Total assets	5,015,482				5,073,571				5,015,482	5,073,571
Financial services [Member]
Assets
Cash and cash equivalents	1,044				760				1,044	760	231
Financial services
Financial services:
Insurance commissions									8,662	7,535	6,991
Title services									6,421	5,672	5,268
Interest income									6	0	5
Total Revenues									15,089	13,207	12,264
Selling, General and Administrative Expense									4,333	3,844	3,430
Expenses
Operating Income (Loss)									10,756	9,363	8,834
Equity in income (loss) of unconsolidated joint ventures									12,230	7,301	4,234
Pretax income (loss)									22,986	16,664	$ 13,068
Assets
Cash and cash equivalents	1,044				760				1,044	760
Receivables	2,232				2,885				2,232	2,885
Investments in unconsolidated joint ventures	14,374				8,594				14,374	8,594
Other assets	20,746				141				20,746	141
Total assets	38,396				12,380				38,396	12,380		$ 32,108
Liabilities
Accounts payable and accrued expenses	2,058				1,495				2,058	1,495
Total liabilities	2,058				$ 1,495				2,058	$ 1,495
Contract with Customer, Asset, Net, Noncurrent	$ 20,600								$ 20,600			$ 19,700