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Homebuilding Senior Notes and Other Debts Payable (Narrative) (Details) - USD ($)	3 Months Ended	9 Months Ended
	Aug. 31, 2023	Aug. 31, 2023	Aug. 31, 2022	Nov. 30, 2022
Debt Instrument [Line Items]
Redemption of senior notes		$ 633,059,000	$ 575,000,000
Gain on repurchase of debt		6,878,000	$ 0
Homebuilding | Letter of Credit
Debt Instrument [Line Items]
Maximum borrowings	$ 500,000,000	500,000,000
Homebuilding | Senior Notes
Debt Instrument [Line Items]
Debt issuance cost	5,200,000	$ 5,200,000		$ 7,600,000
Homebuilding | Senior Notes | 5.875% senior notes due 2024
Debt Instrument [Line Items]
Redemption of senior notes	$ 425,000,000
Interest rate (percent)	5.875%	5.875%
Debt instrument redemption percentage (percent)		100.00%
Gain on repurchase of debt	$ 6,000,000

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