Inventories (Schedule of Capitalized Interest Costs) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015
Interest Costs
Capitalized interest at beginning of period		$ 300,314	$ 284,040	$ 288,442	$ 266,668
Interest incurred		46,258	49,199	92,509	94,202
Interest Expense		(1,970)	(8,118)	(5,667)	(13,456)
Interest amortized to construction and land costs	[1]	(35,557)	(25,443)	(66,239)	(47,736)
Capitalized interest at end of period	[2]	$ 309,045	$ 299,678	309,045	$ 299,678
Land [Member]
Interest Costs
Interest amortized to construction and land costs				$ (500)

[1] Interest amortized to construction and land costs for the six months ended May 31, 2016 included $.5 million related to land sales during the period

[2] 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.