v3.7.0.1
Document and Entity Information - USD ($)
12 Months Ended
Jun. 30, 2017
Sep. 15, 2017
Dec. 31, 2016
Document and Entity Information      
Entity Registrant Name Presidio, Inc.    
Entity Central Index Key 0001631825    
Document Type 10-K    
Document Period End Date Jun. 30, 2017    
Amendment Flag false    
Current Fiscal Year End Date --06-30    
Entity Filer Category Non-accelerated Filer    
Entity Common Stock, Shares Outstanding   91,174,875  
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 0