Acquisitions (Summary Of Estimate Of Fair Value Of Identifiable Assets Acquired And Liabilities Assumed) (Details) - 9 months ended Apr. 30, 2019 $ in Thousands, $ in Millions	USD ($)	AUD ($)
Business Acquisition [Line Items]
Goodwill Acquired During Period	$ 151,622
Falls Creek and Hotham [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	6,979
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	56,264
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	5,451
Goodwill Acquired During Period	71,111
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	(12,453)
Business Combination, Consideration Transferred		$ 178.9
Business Combination, Cash Consideration Transferred	127,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	127,352
Triple Peaks, LLC [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	5,197
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	159,799
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	27,360
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent	3,093
Goodwill Acquired During Period	51,633
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	(17,989)
Business Combination, Consideration Transferred	229,100
Business Combination, Cash Consideration Transferred	74,100
Business Combination, Consideration Transferred, Other	155,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	229,093
Stevens Pass [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	752
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	34,865
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	2,680
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent	886
Goodwill Acquired During Period	28,878
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	(4,029)
Business Combination, Cash Consideration Transferred	64,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	$ 64,032