Summary of Significant Accounting Policies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 31, 2012 Y	Jul. 31, 2011	Jul. 31, 2010
Interest rate charged on past due accounts	18.00%
Minimum period (in years) to capitalize interest cost	1
Cost required to capitalize interest	$ 1.0
Cost of certain constructed assets used in resort operations	33.0
Average estimated useful life (in years)	15
Interest capitalized on real estate development	0	0.5	15.1
Impairment to goodwill or intangible assets	0	0	0
Average remaining period (in years) for initiation fees recognized	21
Refundable period (in years) for initiation fees	30
Advertising expense	21.2	20.3	18.8
Prepaid advertising costs	0.3	0.2
Stated percentage in the debt instrument	6.50%
Construction Projects [Member]
Interest capitalized	$ 0.1	$ 0.1	$ 1.1