Document And Entity Information - shares
3 Months Ended
Oct. 31, 2017
Dec. 04, 2017
Document And Entity Information [Abstract]    
Entity Voluntary Filers No  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Oct. 31, 2017  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1  
Trading Symbol MTN  
Entity Registrant Name VAIL RESORTS INC  
Entity Central Index Key 0000812011  
Current Fiscal Year End Date --07-31  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   40,407,160
Entity Well-known Seasoned Issuer Yes  
Entity Current Reporting Status Yes