Supplementary Balance Sheet Information Schedule of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
Oct. 31, 2019	Jul. 31, 2019	Oct. 31, 2018
Goodwill [Line Items]
Goodwill	$ 1,757,463	$ 1,608,206	$ 1,543,941
Goodwill, Acquired During Period	146,470
Effects of changes in foreign currency exchange rates	2,787
Mountain [Member]
Goodwill [Line Items]
Goodwill	1,689,564	1,540,307
Goodwill, Acquired During Period	146,470
Effects of changes in foreign currency exchange rates	2,787
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.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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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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