Investments in Unconsolidated Joint Ventures (Financial Information for Unconsolidated Joint Ventures) (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Aug. 31, 2023 USD ($) joint_venture	Aug. 31, 2022 USD ($)	Aug. 31, 2023 USD ($) joint_venture	Aug. 31, 2022 USD ($)	May 31, 2023 USD ($)	Nov. 30, 2022 USD ($) joint_venture	May 31, 2022 USD ($)	Nov. 30, 2021 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of investments in unconsolidated joint ventures | joint_venture		6		6			6
Statements of operations of unconsolidated joint venture
Net income		$ 149,933	$ 255,329	$ 439,875	$ 600,256
Assets
Total assets		6,576,986		6,576,986			$ 6,651,930
Liabilities and equity
Equity		3,830,128	3,490,608	3,830,128	3,490,608	$ 3,766,482	3,660,795	$ 3,290,995	$ 3,019,475
Total liabilities and stockholders’ equity		$ 6,576,986		$ 6,576,986			$ 6,651,930
Number of joint ventures with funding commitments | joint_venture		1		1			1
Number of other unconsolidated joint ventures with outstanding debt | joint_venture		0		0			0
Homebuilding
Assets
Cash and cash equivalents		$ 612,076		$ 612,076			$ 328,517
Other assets		102,520		102,520			101,051
Total assets		6,516,451		6,516,451			6,592,398
Financial services
Assets
Cash and cash equivalents		321		321			1,681
Other assets	[1]	31,530		31,530			27,698
Total assets		60,535		60,535			59,532
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Unsecured revolving credit facility
Liabilities and equity
Line of credit facility, current borrowing capacity		62,000		$ 62,000
Unsecured revolving credit facility, expiration date				Apr. 19, 2026
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Homebuilding
Statements of operations of unconsolidated joint venture
Revenues		0	1,293	$ 1,171	5,251
Construction and land costs		0	(801)	(686)	(3,872)
Other expense, net		(193)	(666)	(2,603)	(2,014)
Net income		(193)	(174)	(2,118)	(635)
Assets
Cash		15,787		15,787			14,066
Receivables		3,193		3,193			3,394
Inventories		143,366		143,366			114,465
Other assets		514		514			633
Total assets		162,860		162,860			132,558
Liabilities and equity
Accounts payable and other liabilities		8,917		8,917			8,369
Notes payable	[2]	49,313		49,313			34,396
Equity		104,630		104,630			89,793
Total liabilities and stockholders’ equity		162,860		162,860			132,558
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Financial services
Statements of operations of unconsolidated joint venture
Revenues		26,000	19,857	74,640	100,057
Other expense, net		(17,701)	(19,601)	(52,325)	(59,888)
Net income		8,299	256	22,315	40,169
Assets
Cash and cash equivalents		36,958		36,958			28,120
Mortgage loans held for sale		117,295		117,295			250,572
Other assets		23,033		23,033			33,176
Total assets		177,286		177,286			311,868
Liabilities and equity
Accounts payable and other liabilities		13,549		13,549			15,590
Funding facilities		112,109		112,109			242,944
Equity		51,628		51,628			53,334
Total liabilities and stockholders’ equity		177,286		177,286			311,868
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Financial services | Interest Rate Lock Commitments
Liabilities and equity
Derivative asset, notional amount		20,400		20,400			$ 29,800
Change in fair value included in gain on sale of mortgage loans held for sale		$ (5,200)	$ (6,300)	$ (9,400)	$ 27,100

[1] Other assets at August 31, 2023 and November 30, 2022 included $31.4 million and $27.6 million, respectively, of contract assets for estimated future renewal commissions.

[2] As of both August 31, 2023 and November 30, 2022, one of our unconsolidated joint ventures had borrowings outstanding under a revolving line of credit it entered into with a third-party lender in April 2022 to finance its land acquisition, development and construction activities. Borrowings under this line of credit, which has a maximum commitment of $62.0 million, are secured by the underlying property and related project assets. The line of credit is scheduled to mature on April 19, 2026, unless extended or terminated pursuant to its applicable terms. None of our other unconsolidated joint ventures had outstanding debt at August 31, 2023 or November 30, 2022