Quarterly report pursuant to Section 13 or 15(d)

Nature of Business (Narrative) (Details)

v3.21.1
Nature of Business (Narrative) (Details)
$ / shares in Units, $ in Millions
9 Months Ended 12 Months Ended
Feb. 23, 2017
USD ($)
$ / shares
shares
Mar. 31, 2021
segment
item
Jun. 30, 2020
segment
Feb. 23, 2016
Jan. 13, 2016
USD ($)
Dec. 31, 2015
Nature of Business [Line Items]            
Number of operating segments | segment   2 2      
Number of lines of business | item   3        
iBio CDMO LLC [Member]            
Nature of Business [Line Items]            
Noncontrolling interest, ownership percentage by parent 99.99%     70.00%   100.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners   30.00%     70.00%  
Number of shares exchanged for ownership interest 29,990,000          
iBio Brazil [Member]            
Nature of Business [Line Items]            
Noncontrolling interest, ownership percentage by parent   99.00%        
Second Eastern Affiliate [Member] | iBio CDMO LLC [Member]            
Nature of Business [Line Items]            
Noncontrolling interest, ownership percentage by parent 70.00%          
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners         30.00%  
Lease Term   34 years        
Preferred Tracking Stock [Member]            
Nature of Business [Line Items]            
Noncontrolling Interest, Amount Represented by Preferred Stock | $ $ 13          
Number of shares exchanged for ownership interest 1          
Preferred Stock, Par or Stated Value Per Share | $ / shares $ 0.001          
Preferred Tracking Stock [Member] | iBio CDMO LLC [Member]            
Nature of Business [Line Items]            
Number of shares exchanged for ownership interest 29,990,000          
Preferred Tracking Stock [Member] | Second Eastern Affiliate [Member] | iBio CDMO LLC [Member]            
Nature of Business [Line Items]            
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners 30.00%          
iBio CMO [Member]            
Nature of Business [Line Items]            
Noncontrolling Interest, Amount Represented by Preferred Stock | $         $ 15