Commitments and Contingencies (Details) - USD ($) $ in Thousands	Jul. 31, 2016	Oct. 31, 2015
Company's land purchase commitments
Purchase Obligation	$ 1,558,871	$ 1,217,348
Land Purchase Commitment To Unrelated Party [Member]
Company's land purchase commitments
Purchase Obligation	1,478,209	1,081,008
Land Purchase Commitment To JV [Member]
Company's land purchase commitments
Purchase Obligation	80,662	136,340
Land Parcel Purchase Commitment [Member]
Company's land purchase commitments
Deposits against aggregate purchase commitments	69,466	79,072
Additional cash required to acquire land	1,489,405	1,138,276
Amount of Additional Cash Required to Acquire Land Included in Accrued Expenses	$ 8,071	$ 4,809