Legal Matters (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended	0 Months Ended		1 Months Ended	3 Months Ended
	May 31, 2013 Nevada Development Contract Litigation acre	Sep. 14, 2012 Estancia Coastal Litigation	Jun. 04, 2012 Estancia Coastal Litigation	Dec. 27, 2011 Estancia Coastal Litigation	May 31, 2013 Estancia Coastal Litigation	Feb. 28, 2013 Estancia Coastal Litigation	May 31, 2012 Estancia Coastal Litigation
Loss Contingencies [Line Items]
Acres of purchased land by LVDA	83
Expected compensatory damages	$ 55.0			$ 9.8
Court judgment in favor of the plaintiff in the amount		1.4	9.2
Expected interest charges	41.0		0.9
Recorded charge to increase accrual					0.2	0.6	8.8
Loss contingency accrual, carrying value, payments					3.0
Loss contingency accrual, at carrying value					$ 9.5		$ 11.7