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Supplementary Balance Sheet Information Schedule of Goodwill (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Oct. 31, 2020 | Jul. 31, 2020 | Oct. 31, 2019
Goodwill [Line Items] |  |  |
Goodwill | $ 1,711,870 | $ 1,709,020 | $ 1,757,463
Effects of changes in foreign currency exchange rates | 2,850 |  |
Mountain [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill | 1,669,659 | 1,666,809 |
Effects of changes in foreign currency exchange rates | 2,850 |  |
Lodging [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill | $ 42,211 | $ 42,211 |

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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