v3.19.2
Cover - shares
6 Months Ended
Jun. 30, 2019
Jul. 26, 2019
Entity Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2019  
Document Transition Report false  
Entity File Number 1-13102  
Entity Registrant Name FIRST INDUSTRIAL REALTY TRUST INC  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 36-3935116  
Entity Address, Street Name 1 N. Wacker Drive  
Entity Address, Suite Suite 4200  
Entity Address, City Chicago  
Entity Address, State IL  
Entity Address, Postal Zip Code 60606  
City Area Code 312  
Local Phone Number 344-4300  
Title of each class: Common Stock, par value $.01 per share  
Trading Symbol(s): FR  
Name of each exchange on which registered: NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Shell Company false  
Amendment Flag false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Entity Central Index Key 0000921825  
Current Fiscal Year End Date --12-31  
Entity Common Stock, Shares Outstanding   126,487,215
First Industrial, L.P.    
Entity Information [Line Items]    
Entity File Number 333-21873  
Entity Registrant Name FIRST INDUSTRIAL LP  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 36-3924586  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Shell Company false  
Amendment Flag false  
Entity Central Index Key 0001033128  
Current Fiscal Year End Date --12-31