Inventory Impairments and Land Option Contract Abandonments (Narrative) (Details)	3 Months Ended	6 Months Ended	12 Months Ended
May 31, 2026 USD ($) community	May 31, 2025 USD ($)	May 31, 2026 USD ($) community	May 31, 2025 USD ($)	Nov. 30, 2025 USD ($) community
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of land parcels or communities evaluated for recoverability \| community	25		25		11
Carrying value of communities of land parcels evaluated for impairment	$ 399,600,000		$ 399,600,000		$ 154,100,000
Inventory impairment charges	3,100,000	$ 0	3,100,000	$ 0
Aggregate carrying value of inventory impacted by pretax, noncash inventory impairment charges	$ 22,100,000		$ 22,100,000		$ 38,000,000.0
Number of communities and various other land parcels impacted by pretax, noncash inventory impairment charges \| community	7		7		7
Level 3 \| Fair Value, Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Inventory impairment charges			$ 3,111,000		$ 15,531,000
Land Option Contract Abandonment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Land option abandonments	$ 2,500,000	$ 5,600,000	$ 4,600,000	$ 7,000,000.0

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Number of land parcels or communities evaluated for recoverability.

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Number of communities and various other land parcels impacted by pretax, noncash inventory impairment charges.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The charge against earnings in the period to reduce the carrying amount of real property to fair value.

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The loss recognized on termination of a contract.

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