Document and Entity Information Document - USD ($)
12 Months Ended
Jun. 30, 2018
Aug. 06, 2018
Dec. 31, 2017
Document and Entity Information [Abstract]      
Entity registrant name CIMPRESS N.V.    
Entity central index key 0001262976    
Document type 10-K    
Document period end date Jun. 30, 2018    
Amendment flag false    
Document fiscal year focus 2018    
Document fiscal period focus Q4    
Current fiscal year end date --06-30    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity filer category Large Accelerated Filer    
Entity Public Float     $ 3,206,017,613
Entity common stock, shares outstanding   30,885,642