Supplementary Balance Sheet Information Schedule of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
Oct. 31, 2018	Jul. 31, 2018	Oct. 31, 2017
Goodwill [Line Items]
Goodwill	$ 1,543,941	$ 1,475,686	$ 1,484,335
Goodwill, Acquired During Period	81,270
Effects of changes in foreign currency exchange rates	(13,015)
Mountain [Member]
Goodwill [Line Items]
Goodwill	1,476,042	1,407,787
Goodwill, Acquired During Period	81,270
Effects of changes in foreign currency exchange rates	(13,015)
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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-Name Accounting Standards Codification
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-SubTopic 20
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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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