Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

Document And Entity Information - shares
6 Months Ended
Dec. 31, 2020
Feb. 16, 2021
Document And Entity Information    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Dec. 31, 2020  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q2  
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  
Title of 12(b) Security Common Stock  
Trading Symbol IBIO  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   216,009,931
Entity Emerging Growth Company false  
Entity Small Business true  
Entity Shell Company false