Inventory (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011
Inventory Disclosure [Abstract]
Interest capitalized, beginning of period	$ 311,335	$ 274,730	$ 298,757	$ 267,278
Interest incurred	31,568	28,718	60,467	58,434
Interest expensed to cost of revenues	(17,668)	(17,300)	(33,989)	(35,382)
Interest directly expensed to statement of operations	0	(392)	0	(1,504)
Write-off against other income	(1,582)	(248)	(1,582)	(318)
Interest reclassified to property construction and office equipment	0	0	0	(3,000)
Interest capitalized, end of period	322,516	285,508	322,516	285,508
capitalized interest on investments in unconsolidated entities	$ (1,137)	$ 0	$ (1,137)	$ 0