Document and Entity Information - shares
9 Months Ended
Sep. 30, 2019
Dec. 09, 2019
Document and Entity Information [Abstract]    
Entity Registrant Name TFF Pharmaceuticals, Inc.  
Entity Central Index Key 0001733413  
Amendment Flag false  
Document Period End Date Sep. 30, 2019  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2019  
Current Fiscal Year End Date --12-31  
Document Type 10-Q  
Entity Current Reporting Status No  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   18,450,992
Entity File Number 333-233378  
Entity Interactive Data Current Yes  
Entity Incorporation, State or Country Code DE