v3.8.0.1
Document and Entity Information - shares
6 Months Ended
Apr. 30, 2018
May 31, 2018
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Apr. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q2  
Entity Registrant Name COOPER COMPANIES INC  
Entity Central Index Key 0000711404  
Current Fiscal Year End Date --10-31  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   49,104,101