Accumulated Other Comprehensive Income (Changes in AOCI) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	$ 2,530,299
Ending Balance	2,527,965
Derivative Instruments
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	34,186
Other Comprehensive Loss Before Reclassifications	(8,919)
Amounts Reclassified from Accumulated Other Comprehensive Income	(3,999)
Net Current Period Other Comprehensive Loss	(12,918)
Ending Balance	21,268
Comprehensive (Loss) Income Attributable to Noncontrolling Interest of the Company
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(774)
Other Comprehensive Loss Before Reclassifications	238
Amounts Reclassified from Accumulated Other Comprehensive Income	0
Net Current Period Other Comprehensive Loss	238
Ending Balance	(536)
Accumulated Other Comprehensive Income of the Company
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	33,412
Other Comprehensive Loss Before Reclassifications	(8,681)
Amounts Reclassified from Accumulated Other Comprehensive Income	(3,999)
Net Current Period Other Comprehensive Loss	(12,680)
Ending Balance	20,732
First Industrial, L.P. | Accumulated Other Comprehensive Income of the Operating Partnership
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	34,186
Other Comprehensive Loss Before Reclassifications	(8,919)
Amounts Reclassified from Accumulated Other Comprehensive Income	(3,999)
Net Current Period Other Comprehensive Loss	(12,918)
Ending Balance	$ 21,268