Commitments and Contingencies Commitments and Contingencies (Details Textual 3) $ in Millions	Oct. 31, 2020 USD ($) luxury_homes
Backlog Information [Abstract]
Number of homes to be delivered | luxury_homes	7,791
Aggregate sales value of outstanding homes to be delivered	$ 6,370.0
May 2016 Revolving Credit Facility [Member]
Loss Contingencies [Line Items]
Letters of Credit Outstanding, Amount	119.0
Surety Bond Construction Improvements [Member]
Loss Contingencies [Line Items]
Outstanding Surety Bonds Amount	742.9
Amount of work remains on improvements in the Company's various communities	356.9
Surety Bond Other Obligations [Member]
Loss Contingencies [Line Items]
Additional outstanding surety bonds	$ 182.1