Inventory (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Inventory Disclosure [Abstract]
Interest capitalized, beginning of period	$ 340,904	$ 311,335	$ 330,581	$ 298,757
Interest incurred	32,303	31,568	64,051	60,467
Interest expensed to cost of revenues	(23,016)	(17,668)	(42,990)	(33,989)
Interest Expenses	0	0	0	0
Write-off against other income	(1,133)	(1,582)	(1,221)	(1,582)
Capitalized interest on investments in unconsolidated entities	(1,509)	(1,137)	(2,872)	(1,137)
Interest capitalized, end of period	$ 347,549	$ 322,516	$ 347,549	$ 322,516