Accumulated Other Comprehensive Income (Changes in AOCI) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	$ 2,635,105
Ending Balance	2,673,268
Derivative Instruments
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	22,842
Other Comprehensive Income Before Reclassifications	16,470
Amounts Reclassified from Accumulated Other Comprehensive Income	(6,047)
Net Current Period Other Comprehensive Income	10,423
Ending Balance	33,265
Comprehensive (Loss) Income Attributable to Noncontrolling Interest of the Company
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(570)
Other Comprehensive Income Before Reclassifications	(321)
Amounts Reclassified from Accumulated Other Comprehensive Income	0
Net Current Period Other Comprehensive Income	(321)
Ending Balance	(891)
Accumulated Other Comprehensive Income of the Company
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	22,272
Other Comprehensive Income Before Reclassifications	16,149
Amounts Reclassified from Accumulated Other Comprehensive Income	(6,047)
Net Current Period Other Comprehensive Income	10,102
Ending Balance	32,374
First Industrial, L.P. | Accumulated Other Comprehensive Income of the Operating Partnership
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	22,842
Other Comprehensive Income Before Reclassifications	16,470
Amounts Reclassified from Accumulated Other Comprehensive Income	(6,047)
Net Current Period Other Comprehensive Income	10,423
Ending Balance	$ 33,265