Inventory Impairments and Land Option Contract Abandonments (Narratives) (Details)	3 Months Ended		6 Months Ended
	May 31, 2024 USD ($) community	May 31, 2023 USD ($)	May 31, 2024 USD ($) community	May 31, 2023 USD ($)	Nov. 30, 2023 USD ($) community
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of land parcels or communities evaluated for recoverability | community	7		7		5
Carrying value of communities of land parcels evaluated for impairment	$ 89,800,000		$ 89,800,000		$ 89,300,000
Inventory impairment charges	0	$ 0	0	$ 0
Aggregate carrying value of inventory impacted by pretax, noncash inventory impairment charges	$ 51,600,000		$ 51,600,000		$ 73,900,000
Number of communities and various other land parcels impacted by pretax, noncash inventory impairment charges | community	5		5		5
Land Option Contract Abandonment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Land option abandonments	$ 1,200,000	$ 4,300,000	$ 2,500,000	$ 9,600,000