Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

Document And Entity Information - shares
6 Months Ended
Dec. 31, 2017
Feb. 14, 2018
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Dec. 31, 2017  
Document Fiscal Year Focus 2018  
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 Smaller Reporting Company  
Trading Symbol IBIO  
Entity Common Stock, Shares Outstanding   115,318,510