CONSOLIDATED STATEMENT OF CHANGES IN EQUITY/ PARTNERS' CAPITAL - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Distributions in Excess of Accumulated Earnings)	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests	First Industrial, L.P.	First Industrial, L.P. General Partner Units	First Industrial, L.P. Limited Partner Units	First Industrial, L.P. Accumulated Other Comprehensive Income (Loss)	First Industrial, L.P. Noncontrolling Interests
Beginning Balance at Dec. 31, 2021	$ 2,248,372	$ 1,317	$ 2,376,026	$ (178,293)	$ (4,238)	$ 53,560
Beginning Balance at Dec. 31, 2021							$ 2,257,607	$ 2,175,549	$ 81,435	$ (4,331)	$ 4,954
Increase (Decrease) in Equity / Partners' Capital [Roll Forward]
Net Income	37,123			36,258		865	37,123	36,237	868		18
Other Comprehensive Income (Loss)	11,197				10,935	262	11,197			11,197
Issuance of Common Stock/Contribution of General Partner Units, Net of Issuance Costs	12,746	2	12,744				12,746	12,746
Stock Based Compensation Activity	2,721	1	(198)	(1,483)		4,401
Stock Based Compensation Activity							2,721	(1,680)	4,401
Common Stock Dividends and Unit Distributions	(39,887)			(39,009)		(878)
Unit Distributions							(39,887)	(39,009)	(878)
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0	36			(36)	0	36	(36)
Reallocation - Additional Paid-in Capital	0		12			(12)
Reallocation - Other Comprehensive Income	0				6	(6)
Contributions from Noncontrolling Interests	103					103	112				112
Distributions to Noncontrolling Interests							(40)				(40)
Ending Balance at Mar. 31, 2022	2,272,375	1,320	2,388,620	(182,527)	6,703	58,259
Ending Balance at Mar. 31, 2022							2,281,579	2,183,879	85,790	6,866	5,044
Beginning Balance at Dec. 31, 2021	2,248,372	1,317	2,376,026	(178,293)	(4,238)	53,560
Beginning Balance at Dec. 31, 2021							2,257,607	2,175,549	81,435	(4,331)	4,954
Increase (Decrease) in Equity / Partners' Capital [Roll Forward]
Net Income	297,674						297,674
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	1	2,711			(2,712)	0	2,712	(2,712)
Ending Balance at Sep. 30, 2022	2,486,444	1,321	2,397,977	(19,757)	36,390	70,513
Ending Balance at Sep. 30, 2022							2,495,736	2,351,482	91,963	37,234	15,057
Beginning Balance at Mar. 31, 2022	2,272,375	1,320	2,388,620	(182,527)	6,703	58,259
Beginning Balance at Mar. 31, 2022							2,281,579	2,183,879	85,790	6,866	5,044
Increase (Decrease) in Equity / Partners' Capital [Roll Forward]
Net Income	133,676			116,991		16,685	133,676	116,969	2,450		14,257
Other Comprehensive Income (Loss)	5,799				5,665	134	5,799			5,799
Stock Based Compensation Activity	3,893	0	1,074	0		2,819
Stock Based Compensation Activity							3,893	1,074	2,819
Common Stock Dividends and Unit Distributions	(39,766)			(39,008)		(758)
Unit Distributions							(39,766)	(39,008)	(758)
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	1	1,234			(1,235)	0	1,235	(1,235)
Reallocation - Additional Paid-in Capital	0		2,534			(2,534)
Reallocation - Other Comprehensive Income	0				3	(3)
Contributions from Noncontrolling Interests							1				1
Distributions to Noncontrolling Interests	(4,418)					(4,418)	(4,449)				(4,449)
Ending Balance at Jun. 30, 2022	2,371,559	1,321	2,393,462	(104,544)	12,371	68,949
Ending Balance at Jun. 30, 2022							2,380,733	2,264,149	89,066	12,665	14,853
Increase (Decrease) in Equity / Partners' Capital [Roll Forward]
Net Income	126,875			123,888		2,987	126,875	123,866	2,923		86
Other Comprehensive Income (Loss)	24,569				24,001	568	24,569			24,569
Stock Based Compensation Activity	3,584	0	1,127	0		2,457
Stock Based Compensation Activity							3,584	1,127	2,457
Common Stock Dividends and Unit Distributions	(40,143)			(39,101)		(1,042)
Unit Distributions							(40,143)	(39,101)	(1,042)
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0	1,441			(1,441)	0	1,441	(1,441)
Reallocation - Additional Paid-in Capital	0		1,947			(1,947)
Reallocation - Other Comprehensive Income	0				18	(18)
Contributions from Noncontrolling Interests							129				129
Distributions to Noncontrolling Interests							(11)				(11)
Ending Balance at Sep. 30, 2022	2,486,444	1,321	2,397,977	(19,757)	36,390	70,513
Ending Balance at Sep. 30, 2022							2,495,736	2,351,482	91,963	37,234	15,057
Beginning Balance at Dec. 31, 2022	2,530,299	1,321	2,401,334	23,131	33,412	71,101
Beginning Balance at Dec. 31, 2022							2,539,580	2,395,601	95,015	34,186	14,778
Increase (Decrease) in Equity / Partners' Capital [Roll Forward]
Net Income	60,775			55,967		4,808	60,775	55,947	1,447		3,381
Other Comprehensive Income (Loss)	(12,918)				(12,592)	(326)	(12,918)			(12,918)
Stock Based Compensation Activity	4,627	1	(412)	(710)		5,748
Stock Based Compensation Activity							4,627	(1,121)	5,748
Common Stock Dividends and Unit Distributions	(43,460)			(42,401)		(1,059)
Unit Distributions							(43,460)	(42,401)	(1,059)
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0	513			(513)	0	513	(513)
Reallocation - Additional Paid-in Capital	0		(1,166)			1,166
Reallocation - Other Comprehensive Income	0				(88)	88
Contributions from Noncontrolling Interests							1				1
Distributions to Noncontrolling Interests	(11,358)					(11,358)	(11,359)				(11,359)
Ending Balance at Mar. 31, 2023	2,527,965	1,322	2,400,269	35,987	20,732	69,655
Ending Balance at Mar. 31, 2023							2,537,246	2,408,539	100,638	21,268	6,801
Beginning Balance at Dec. 31, 2022	2,530,299	1,321	2,401,334	23,131	33,412	71,101
Beginning Balance at Dec. 31, 2022							2,539,580	2,395,601	95,015	34,186	14,778
Increase (Decrease) in Equity / Partners' Capital [Roll Forward]
Net Income	194,148						194,148
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0	1,060			(1,060)	0	1,060	(1,060)
Ending Balance at Sep. 30, 2023	2,606,703	1,323	2,407,348	80,856	45,674	71,502
Ending Balance at Sep. 30, 2023							2,616,000	2,456,472	105,597	46,846	7,085
Beginning Balance at Mar. 31, 2023	2,527,965	1,322	2,400,269	35,987	20,732	69,655
Beginning Balance at Mar. 31, 2023							2,537,246	2,408,539	100,638	21,268	6,801
Increase (Decrease) in Equity / Partners' Capital [Roll Forward]
Net Income	56,234			54,636		1,598	56,234	54,613	1,410		211
Other Comprehensive Income (Loss)	17,939				17,487	452	17,939			17,939
Stock Based Compensation Activity	3,218	1	1,288	(2)		1,931
Stock Based Compensation Activity							3,218	1,287	1,931
Common Stock Dividends and Unit Distributions	(43,453)			(42,404)		(1,049)
Unit Distributions							(43,453)	(42,404)	(1,049)
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0	151			(151)	0	151	(151)
Reallocation - Additional Paid-in Capital	0		1,689			(1,689)
Contributions from Noncontrolling Interests							2				2
Distributions to Noncontrolling Interests	(64)					(64)	(69)				(69)
Ending Balance at Jun. 30, 2023	2,561,839	1,323	2,403,397	48,217	38,219	70,683
Ending Balance at Jun. 30, 2023							2,571,117	2,422,186	102,779	39,207	6,945
Increase (Decrease) in Equity / Partners' Capital [Roll Forward]
Net Income	77,139			75,012		2,127	77,139	74,986	1,931		222
Other Comprehensive Income (Loss)	7,639				7,447	192	7,639			7,639
Stock Based Compensation Activity	3,437	0	1,277	0		2,160
Stock Based Compensation Activity							3,437	1,277	2,160
Common Stock Dividends and Unit Distributions	(43,250)			(42,373)		(877)
Unit Distributions							(43,250)	(42,373)	(877)
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0	396			(396)	0	396	(396)
Reallocation - Additional Paid-in Capital	0		2,278			(2,278)
Reallocation - Other Comprehensive Income	0				8	(8)
Contributions from Noncontrolling Interests							24				24
Distributions to Noncontrolling Interests	(101)					(101)	(106)				(106)
Ending Balance at Sep. 30, 2023	$ 2,606,703	$ 1,323	$ 2,407,348	$ 80,856	$ 45,674	$ 71,502
Ending Balance at Sep. 30, 2023							$ 2,616,000	$ 2,456,472	$ 105,597	$ 46,846	$ 7,085