Legal Matters (Details) $ in Millions	9 Months Ended
	Aug. 31, 2018 USD ($) claim_filed
Northern California Townhome Community [Member]
Loss Contingencies [Line Items]
Expected compensatory damages | $	$ 100.0
Chapter 558 of the Florida Statutes [Member]
Loss Contingencies [Line Items]
Loss Contingency, New Claims Filed, Number | claim_filed	500