Supplementary Balance Sheet Information Schedule of Goodwill (Details) - USD ($) $ in Thousands	6 Months Ended
Jan. 31, 2019	Jul. 31, 2018	Jan. 31, 2018
Goodwill [Line Items]
Goodwill	$ 1,547,084	$ 1,475,686	$ 1,533,980
Goodwill, Acquired During Period	81,584
Effects of changes in foreign currency exchange rates	(10,186)
Mountain [Member]
Goodwill [Line Items]
Goodwill	1,479,185	1,407,787
Goodwill, Acquired During Period	81,584
Effects of changes in foreign currency exchange rates	(10,186)
Lodging [Member]
Goodwill [Line Items]
Goodwill	$ 67,899	$ 67,899

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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