Accrued Expenses Product Liability Contingency (Detail Textuals) $ in Millions	3 Months Ended				12 Months Ended
	Oct. 31, 2016 USD ($)	Jul. 31, 2016 USD ($)	Apr. 30, 2016 USD ($)	Oct. 31, 2015 USD ($)	Oct. 31, 2016 USD ($) communities	Oct. 31, 2015 USD ($) communities	Oct. 31, 2014 USD ($)
Water intrusion related [Member]
Product Warranty Liability [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 324.4				$ 324.4
Product Liability Contingency, percent of known claims	33.00%				33.00%
Product Liability Accrual, Period Expense	$ 121.2				$ 125.6
Stucco Related [Member]
Product Warranty Liability [Line Items]
Loss Contingency, Estimate of Possible Loss				$ 80.3		$ 80.3	$ 54.0
Product Liability Contingency, Third Party Recovery						$ 32.6	21.5
Product Liability Accrual, Period Expense		$ 1.9	$ 2.5	$ 14.7			$ 25.0
Non-stucco related [Member]
Product Warranty Liability [Line Items]
Loss Contingency, Estimate of Possible Loss	115.5				115.5
Product Liability Contingency, Third Party Recovery					$ 152.6
Construction Claims, Three Community Associations, California [Member]
Product Warranty Liability [Line Items]
Loss Contingency, New Claims Filed, Number | communities						3
Loss Contingency, Claims Settled, Number | communities					1	1
Loss Contingency, Loss in Period						$ 6.9
Other warranty claims [Member]
Product Warranty Liability [Line Items]
Product Liability Accrual, Period Expense					$ 9.3
Other Assets [Member]
Product Warranty Liability [Line Items]
Loss Contingency, Receivable	159.0				159.0
Other Assets [Member] | Stucco Related [Member]
Product Warranty Liability [Line Items]
Loss Contingency, Receivable	141.7				141.7
Other Assets [Member] | Other warranty claims [Member]
Product Warranty Liability [Line Items]
Loss Contingency, Receivable	$ 17.3				$ 17.3