Commitments and Contingencies Commitments and Contingencies (Details Textual 1) $ in Millions	Oct. 31, 2015 USD ($) luxury_homes
Backlog Information [Abstract]
Number of homes to be delivered | luxury_homes	4,064
Aggregate sales value of outstanding homes to be delivered	$ 3,500.0
Revolving Credit Facility [Member]
Loss Contingencies [Line Items]
Letters of Credit Outstanding, Amount	118.9
Surety Bond Construction Improvements [Member]
Loss Contingencies [Line Items]
Outstanding Surety Bonds Amount	606.6
Amount of work remains on improvements in the Company's various communities	354.7
Surety Bond Other Obligations [Member]
Loss Contingencies [Line Items]
Additional outstanding surety bonds	$ 116.6