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Acquisitions (Summary Of Estimate Of Fair Value Of Identifiable Assets Acquired And Liabilities Assumed) (Details)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Oct. 31, 2016
USD ($)
shares
Jan. 31, 2016
USD ($)
Oct. 31, 2015
USD ($)
Oct. 17, 2016
USD ($)
Oct. 14, 2016
$ / shares
Jan. 19, 2016
USD ($)
Business Acquisition [Line Items]            
Payments to Acquire Businesses, Net of Cash Acquired $ 512,348   $ 0      
Goodwill, Acquired During Period 964,606          
Noncontrolling Interest, Increase from Business Combination $ 181,818          
Whistler Blackcomb [Member]            
Business Acquisition [Line Items]            
Shares Purchased to Acquire Business | shares 38,500          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 5 years          
Foreign Currency Exchange Rate, Translation         0.097294  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares 3,746          
Wilmot [Member]            
Business Acquisition [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment           $ 12,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill           400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets           200
Goodwill, Acquired During Period   $ 7,400        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable           $ 300
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   10 years        
Business Combination, Cash Consideration Transferred   $ 20,200        
United States of America, Dollars | Whistler Blackcomb [Member]            
Business Acquisition [Line Items]            
Indefinite-Lived Trademarks       $ 139,977    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables       35,969    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment       334,384    
Business Acquisition, Purchase Price Allocation, Real estate held for sale and investment       8,216    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill       150,514    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets       3,113    
Goodwill, Acquired During Period $ 964,606          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities       (74,466)    
Business Combination, Consideration Transferred 1,087,203          
Finite-Lived Customer Relationships, Gross       7,417    
Payments to Acquire Management Contract Rights 3,120          
Share Price | $ / shares         $ 153.41  
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned       574,645    
Business Combination, Cash Consideration Transferred 512,558          
Business Combination, Consideration Transferred, Other 4,308          
Total Estimated Purchase Consideration       1,273,329    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt       (144,922)    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent       (1,665)    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other       $ (2,420)    
Noncontrolling Interests [Member]            
Business Acquisition [Line Items]            
Noncontrolling Interest, Increase from Business Combination $ 181,818