Inventories (Schedule of Capitalized Interest Costs) (Details) - USD ($)		3 Months Ended		9 Months Ended
		Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2017	Aug. 31, 2016
Interest Costs
Capitalized interest at beginning of period		$ 303,984,000	$ 309,045,000	$ 306,723,000	$ 288,442,000
Interest incurred	[1]	43,434,000	46,485,000	136,857,000	138,994,000
Interest Expense	[1]	0	0	(6,307,000)	(5,667,000)
Interest amortized to construction and land costs	[2]	(55,204,000)	(40,424,000)	(145,059,000)	(106,663,000)
Capitalized interest at end of period	[3]	292,214,000	315,106,000	292,214,000	315,106,000
Loss on early extinguishment of debt				5,685,000	0
Land [Member]
Interest Costs
Interest amortized to construction and land costs		$ (200,000)	$ 0	$ (1,800,000)	$ (500,000)

[1] Interest incurred and interest expensed for the nine months ended August 31, 2017 included a charge of $5.7 million for the early extinguishment of debt

[2] Interest amortized to construction and land costs for the three months ended August 31, 2017 included $.2 million related to land sales during the period. We had no land sale activity for the three months ended August 31, 2016. Interest amortized to construction and land costs for the nine months ended August 31, 2017 and 2016 included $1.8 million and $.5 million, respectively, related to land sales during those periods.

[3] Capitalized interest amounts presented in the table reflect the gross amount of capitalized interest, as inventory impairment charges recognized, if any, are not generally allocated to specific components of inventory.