Accumulated Other Comprehensive Income (Changes in AOCI) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	$ 2,635,105
Ending Balance	2,679,179
Derivative Instruments
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	22,842
Other Comprehensive Income Before Reclassifications	21,765
Amounts Reclassified from Accumulated Other Comprehensive Income	(12,080)
Net Current Period Other Comprehensive Income	9,685
Ending Balance	32,527
Comprehensive (Loss) Income Attributable to Noncontrolling Interest of the Company
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(570)
Other Comprehensive Income Before Reclassifications	(304)
Amounts Reclassified from Accumulated Other Comprehensive Income	0
Net Current Period Other Comprehensive Income	(304)
Ending Balance	(874)
Accumulated Other Comprehensive Income of the Company
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	22,272
Other Comprehensive Income Before Reclassifications	21,461
Amounts Reclassified from Accumulated Other Comprehensive Income	(12,080)
Net Current Period Other Comprehensive Income	9,381
Ending Balance	31,653
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	21,765
Amounts Reclassified from Accumulated Other Comprehensive Income	(12,080)
Net Current Period Other Comprehensive Income	9,685
Ending Balance	$ 32,527