v3.26.1
Accumulated Other Comprehensive Income (Changes in AOCI) (Details)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning Balance $ 2,758,930
Ending Balance 2,869,630
Derivative Instruments  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning Balance 3,256
Other Comprehensive Income (Loss) Before Reclassifications 11,458
Amounts Reclassified from Accumulated Other Comprehensive Income (3,007)
Net Current Period Other Comprehensive Income 8,451
Ending Balance 11,707
Comprehensive (Loss) Income Attributable to Noncontrolling Interest of the Company  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning Balance (97)
Other Comprehensive Income (Loss) Before Reclassifications (285)
Amounts Reclassified from Accumulated Other Comprehensive Income 0
Net Current Period Other Comprehensive Income (285)
Ending Balance (382)
Accumulated Other Comprehensive Income of the Company  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning Balance 3,159
Other Comprehensive Income (Loss) Before Reclassifications 11,173
Amounts Reclassified from Accumulated Other Comprehensive Income (3,007)
Net Current Period Other Comprehensive Income 8,166
Ending Balance 11,325
First Industrial, L.P. | Accumulated Other Comprehensive Income of the Operating Partnership  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning Balance 3,256
Other Comprehensive Income (Loss) Before Reclassifications 11,458
Amounts Reclassified from Accumulated Other Comprehensive Income (3,007)
Net Current Period Other Comprehensive Income 8,451
Ending Balance $ 11,707