Document and Entity Information	6 Months Ended
	Jun. 30, 2013
Entity Information [Line Items]
Entity Registrant Name	FIRST INDUSTRIAL LP
Entity Central Index Key	0001033128
Trading Symbol	FRFI
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Entity Current Reporting Status	Yes
Amendment Flag	false
Entity Common Stock, Shares Outstanding	0