Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

Document And Entity Information - USD ($)
12 Months Ended
Jun. 30, 2020
Oct. 08, 2020
Dec. 31, 2019
Document And Entity Information      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Jun. 30, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Registrant Name iBio, Inc.    
Entity Central Index Key 0001420720    
Current Fiscal Year End Date --06-30    
Entity Filer Category Non-accelerated Filer    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Trading Symbol IBIO    
Title of 12(b) Security Common Stock    
Entity Common Stock, Shares Outstanding   180,287,751  
Entity Emerging Growth Company false    
Entity Small Business true    
Entity Shell Company false    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Public Float     $ 13,641,864