Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2013	Oct. 31, 2012
Company's land purchase commitments
Aggregate purchase commitments unrelated parties	$ 1,520,092	$ 742,918
Unconsolidated entities that the Company has investments in	61,738	4,067
Total	1,581,830	746,985
Deposits against aggregate purchase commitments	71,999	42,921
Additional cash required to acquire land	1,509,831	704,064
Total	1,581,830	746,985
Amount of Additional Cash Required to Acquire Land Included in Accrued Expenses	$ 4,336	$ 4,328