Commitments and Contingencies (Details) - USD ($) $ in Thousands	Jul. 31, 2017	Oct. 31, 2016
Company's land purchase commitments
Purchase Obligation	$ 1,881,389	$ 1,623,389
Land Purchase Commitment To Unrelated Party [Member]
Company's land purchase commitments
Purchase Obligation	1,872,468	1,544,185
Land Purchase Commitment To JV [Member]
Company's land purchase commitments
Purchase Obligation	8,921	79,204
Land Parcel Purchase Commitment [Member]
Company's land purchase commitments
Deposits against Aggregate Purchase Commitments	94,903	65,299
Additional cash required to acquire land	1,786,486	1,558,090
Amount of Additional Cash Required to Acquire Land Included in Accrued Expenses	$ 3,672	$ 18,266