Commitments and Contingencies (Details) - USD ($) $ in Thousands	Jul. 31, 2015	Oct. 31, 2014
Company's land purchase commitments
Purchase Obligation	$ 1,263,457	$ 1,227,914
Land Purchase Commitment To Unrelated Party [Member]
Company's land purchase commitments
Purchase Obligation	1,091,833	1,043,654
Land Purchase Commitment To JV [Member]
Company's land purchase commitments
Purchase Obligation	171,624	184,260
Land Parcel Purchase Commitment [Member]
Company's land purchase commitments
Deposits against aggregate purchase commitments	76,204	103,422
Additional cash required to acquire land	1,187,253	1,124,492
Amount of Additional Cash Required to Acquire Land Included in Accrued Expenses	$ 1,282	$ 764