Inventory Impairments and Land Option Contract Abandonments (Narratives) (Details)		3 Months Ended				9 Months Ended
		Aug. 31, 2022 USD ($) property delivery lot Rate		Aug. 31, 2021 USD ($) delivery Rate		Aug. 31, 2022 USD ($) property delivery lot Rate		Aug. 31, 2021 USD ($) delivery Rate		Nov. 30, 2021 USD ($) property
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Number of land parcels or communities evaluated for recoverability | property		0				0				0
Inventory impairment charges		$ 2,600,000		$ 6,300,000		$ 2,600,000		$ 9,900,000
Aggregate carrying value of inventory impacted by pretax, noncash inventory impairment charges		$ 76,700,000				$ 76,700,000				$ 87,700,000
Number of communities and various other land parcels impacted by pretax, noncash inventory impairment charges		7				7				11
Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Average Selling price	[1]	$ 0		$ 949,400		$ 0		$ 471,000
Deliveries per month | delivery	[1]	0		4		0		4
Minimum [Member] | Measurement Input, Discount Rate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Discount Rate, Percent | Rate	[1]	0.00%		18.00%		0.00%		18.00%
Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Average Selling price		$ 0		$ 0	[1]	$ 0	[1]	$ 949,400	[1]
Deliveries per month | delivery		0		4	[1]	0	[1]	5	[1]
Discount Rate, Percent								19.00%
Maximum [Member] | Measurement Input, Discount Rate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Discount Rate, Percent | Rate		0.00%	[1]	18.00%		0.00%	[1]
Land Option Contract Abandonment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Land option contract abandonment charges		$ 5,900,000		$ 400,000		$ 6,800,000		$ 1,300,000

[1] The ranges of inputs used in each period primarily reflect differences between the housing markets where each impacted community is located, rather than fluctuations in prevailing market conditions.