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Acquisitions (Summary Pro Forma Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
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Oct. 31, 2016 | Oct. 31, 2015
Pro Forma Financial Information [Line Items] |  |
Pro forma net revenue | $ 200,929 | $ 195,449
Business Acquisition, Pro Forma Net Loss | $ (67,678) | $ (71,000)
Pro forma basic net income per share attributable to Vail Resorts, Inc. | $ (1.69) | $ (1.77)
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ (1.69) | $ (1.77)

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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
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