Investments in Unconsolidated Joint Ventures (Financial Information for Unconsolidated Joint Ventures) (Details) $ in Thousands		12 Months Ended
		Nov. 30, 2022 USD ($) joint_venture	Nov. 30, 2021 USD ($) joint_venture	Nov. 30, 2020 USD ($) joint_venture	Nov. 30, 2019 USD ($)
Statements of Operations of Unconsolidated Joint Ventures [Abstract]
Net income		$ 816,666	$ 564,746	$ 296,243
Balance Sheets of Unconsolidated Joint Ventures [Abstract]
Cash and cash equivalents		330,198	292,136	682,529
Total assets		6,651,930	5,835,918
Liabilities and stockholders’ equity
Equity		3,660,795	3,019,475	$ 2,665,769	$ 2,383,122
Total liabilities and stockholders’ equity		$ 6,651,930	$ 5,835,918
Number of investments in unconsolidated joint ventures | joint_venture		6	6	5
Number of unconsolidated joint ventures with loan commitments | joint_venture		1
Number of Other Unconsolidated Joint Ventures With Outstanding Debt | joint_venture		0	0
Homebuilding
Balance Sheets of Unconsolidated Joint Ventures [Abstract]
Cash and cash equivalents		$ 328,517	$ 290,764	$ 681,190
Other assets		101,051	104,153
Total assets		6,592,398	5,791,716
Financial service
Balance Sheets of Unconsolidated Joint Ventures [Abstract]
Cash and cash equivalents		1,681	1,372	1,339
Other assets	[1]	27,698	24,347
Total assets		59,532	44,202
Financial service | Interest Rate Lock Commitments
Liabilities and stockholders’ equity
Derivative asset, notional amount		29,800	9,500
Change in fair value included in gain on sale of mortgage loans held for sale		20,300	2,800	4,000
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Line of Credit
Liabilities and stockholders’ equity
Line of credit facility, current borrowing capacity		62,000
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Homebuilding
Statements of Operations of Unconsolidated Joint Ventures [Abstract]
Revenues		5,251	14,818	127,270
Construction and land costs		(3,875)	(12,398)	(93,162)
Other expenses, net		(2,935)	(2,640)	(8,850)
Net income		(1,559)	(220)	25,258
Balance Sheets of Unconsolidated Joint Ventures [Abstract]
Cash		14,066	15,731
Receivables		3,394	795
Inventories		114,465	64,034
Other assets		633	50
Total assets		132,558	80,610
Liabilities and stockholders’ equity
Accounts payable and other liabilities		8,369	12,285
Notes payable		34,396	0
Equity		89,793	68,325
Total liabilities and stockholders’ equity		132,558	80,610
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Financial service
Statements of Operations of Unconsolidated Joint Ventures [Abstract]
Revenues		115,173	126,398	108,417
Other expenses, net		(73,573)	(79,221)	(66,109)
Net income		41,600	47,177	$ 42,308
Balance Sheets of Unconsolidated Joint Ventures [Abstract]
Cash and cash equivalents		28,120	23,916
Mortgages Held-for-sale, Fair Value Disclosure		250,572	234,669
Other assets		33,176	14,060
Total assets		311,868	272,645
Liabilities and stockholders’ equity
Accounts payable and other liabilities		15,590	18,375
Funding facilities		242,944	221,633
Equity		53,334	32,637
Total liabilities and stockholders’ equity		$ 311,868	$ 272,645

[1] Other assets at November 30, 2022 and 2021 included $27.6 million and $24.1 million, respectively, of contract assets for estimated future renewal commissions