CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income		$ 285,837	$ 381,612	$ 277,171
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation		130,427	119,477	107,876
Amortization of Debt Issuance Costs		3,626	3,187	3,423
Other Amortization, Including Equity Based Compensation		34,088	32,845	31,181
Equity in (Income) Loss of Joint Ventures		(32,207)	(114,942)	161
Distributions from Joint Ventures		7,400	118,034	0
Gain on Sale of Real Estate	[1]	(95,650)	(128,268)	(150,310)
Gain on Involuntary Conversion		0	(1,495)	0
Straight-line Rental Income and Expense, Net		(21,925)	(25,962)	(16,081)
Increase in Tenant Accounts Receivable, Prepaid Expenses and Other Assets, Net		(2,363)	(4,852)	(472)
(Decrease) Increase in Accounts Payable, Accrued Expenses, Other Liabilities, Rents Received in Advance and Security Deposits		(4,418)	31,307	13,946
Net Cash Provided by Operating Activities		304,815	410,943	266,895
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of Real Estate		(131,057)	(305,326)	(352,922)
Additions to Investment in Real Estate and Non-Acquisition Tenant Improvements and Lease Costs		(361,927)	(522,368)	(314,084)
Net Proceeds from Sales of Investments in Real Estate		120,411	175,409	234,726
Decrease (Increase) in Escrow Deposits		3,877	(450)	(4,461)
Proceeds from Involuntary Conversion		0	1,495	0
Contributions to and Investments in Joint Ventures		(12,349)	(5,616)	(1,550)
Distributions from Joint Ventures		0	29,356	21,407
Other Investing Activity		2,739	(1,608)	61
Net Cash Used in Investing Activities		(378,306)	(629,108)	(416,823)
CASH FLOWS FROM FINANCING ACTIVITIES:
Financing and Equity Issuance Costs		(61)	(5,265)	(6,452)
Proceeds from the Issuance of Common Stock/Contribution of General Partner Units		0	12,823	145,760
Tax Paid on Vested Equity Compensation		(2,510)	(2,942)	(5,126)
Common Stock Dividends and Unit Distributions Paid		(169,368)	(155,333)	(139,710)
Contributions from Noncontrolling Interests		0	103	28
Distributions to Noncontrolling Interests		(11,523)	(4,418)	0
Repayments on Mortgage Loans Payable		(321)	(69,465)	(64,450)
Proceeds from Unsecured Term Loans		0	465,000	0
Proceeds from Unsecured Credit Facility		374,000	720,000	289,000
Repayments on Unsecured Credit Facility		(218,000)	(656,000)	(210,000)
Net Cash (Used in) Provided by Financing Activities		(27,783)	304,503	9,050
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash		(101,274)	86,338	(140,878)
Cash, Cash Equivalents and Restricted Cash, Beginning of Year		145,118	58,780	199,658
Cash, Cash Equivalents and Restricted Cash, End of Year		43,844	145,118	58,780
SUPPLEMENTAL INFORMATION TO STATEMENTS OF CASH FLOWS:
Interest Paid, Net of Interest Expense Capitalized		72,881	46,445	44,184
Interest Expense Capitalized in Connection with Development Activity and Joint Venture Investment		13,791	16,298	12,140
Income Taxes Paid		27,754	3,760	3,366
Cash Paid for Operating Lease Liabilities		3,348	3,444	3,261
Supplemental Schedule of Non-Cash Operating Activities:
Operating Lease Liabilities Arising from Obtaining Right-of-Use Assets		941	949	819
Supplemental Schedule of Non-Cash Investing and Financing Activities:
Dividends and Distributions Payable		44,201	41,259	37,178
Exchange of Limited Partner Units for Common Stock/General Partner Units
Conversion of Limited Partner Units to Common Stock / General Partner Units		0	0	0
Assumption of Other Assets in Connection with the Acquisition of Real Estate		0	0	3,611
Assumption of Liabilities in Connection with the Acquisition of Real Estate		528	2,115	1,990
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate		55,876	86,456	82,526
Tenant Improvements Funded by Tenant		3,878	610	28,559
Write-off of Fully Depreciated Assets		(33,529)	(35,716)	(36,799)
Noncontrolling Interests
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income		11,021	22,478	6,174
Exchange of Limited Partner Units for Common Stock/General Partner Units
Conversion of Limited Partner Units to Common Stock / General Partner Units		(1,332)	(2,444)	(1,761)
Common Stock
Exchange of Limited Partner Units for Common Stock/General Partner Units
Conversion of Limited Partner Units to Common Stock / General Partner Units		0	1	1
Additional Paid-in Capital
Exchange of Limited Partner Units for Common Stock/General Partner Units
Conversion of Limited Partner Units to Common Stock / General Partner Units		1,332	2,443	1,760
First Industrial, L.P.
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income		285,837	381,612	277,171
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation		130,427	119,477	107,876
Amortization of Debt Issuance Costs		3,626	3,187	3,423
Other Amortization, Including Equity Based Compensation		34,088	32,845	31,181
Equity in (Income) Loss of Joint Ventures		(32,207)	(114,942)	161
Distributions from Joint Ventures		7,400	118,034	0
Gain on Sale of Real Estate		(95,650)	(128,268)	(150,310)
Gain on Involuntary Conversion		0	(1,495)	0
Straight-line Rental Income and Expense, Net		(21,925)	(25,962)	(16,081)
Increase in Tenant Accounts Receivable, Prepaid Expenses and Other Assets, Net		(2,365)	(4,898)	(337)
(Decrease) Increase in Accounts Payable, Accrued Expenses, Other Liabilities, Rents Received in Advance and Security Deposits		(4,418)	31,307	13,946
Net Cash Provided by Operating Activities		304,813	410,897	267,030
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of Real Estate		(131,057)	(305,326)	(352,922)
Additions to Investment in Real Estate and Non-Acquisition Tenant Improvements and Lease Costs		(361,927)	(522,368)	(314,084)
Net Proceeds from Sales of Investments in Real Estate		120,411	175,409	234,726
Decrease (Increase) in Escrow Deposits		3,877	(450)	(4,461)
Proceeds from Involuntary Conversion		0	1,495	0
Contributions to and Investments in Joint Ventures		(12,349)	(5,616)	(1,550)
Distributions from Joint Ventures		0	29,356	21,407
Other Investing Activity		2,739	(1,608)	61
Net Cash Used in Investing Activities		(378,306)	(629,108)	(416,823)
CASH FLOWS FROM FINANCING ACTIVITIES:
Financing and Equity Issuance Costs		(61)	(5,265)	(6,452)
Proceeds from the Issuance of Common Stock/Contribution of General Partner Units		0	12,823	145,760
Tax Paid on Vested Equity Compensation		(2,510)	(2,942)	(5,126)
Common Stock Dividends and Unit Distributions Paid		(169,368)	(155,333)	(139,710)
Contributions from Noncontrolling Interests		30	242	64
Distributions to Noncontrolling Interests		(11,551)	(4,511)	(171)
Repayments on Mortgage Loans Payable		(321)	(69,465)	(64,450)
Proceeds from Unsecured Term Loans		0	465,000	0
Proceeds from Unsecured Credit Facility		374,000	720,000	289,000
Repayments on Unsecured Credit Facility		(218,000)	(656,000)	(210,000)
Net Cash (Used in) Provided by Financing Activities		(27,781)	304,549	8,915
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash		(101,274)	86,338	(140,878)
Cash, Cash Equivalents and Restricted Cash, Beginning of Year		145,118	58,780	199,658
Cash, Cash Equivalents and Restricted Cash, End of Year		43,844	145,118	58,780
SUPPLEMENTAL INFORMATION TO STATEMENTS OF CASH FLOWS:
Interest Paid, Net of Interest Expense Capitalized		72,881	46,445	44,184
Interest Expense Capitalized in Connection with Development Activity and Joint Venture Investment		13,791	16,298	12,140
Income Taxes Paid		27,754	3,760	3,366
Cash Paid for Operating Lease Liabilities		3,348	3,444	3,261
Supplemental Schedule of Non-Cash Operating Activities:
Operating Lease Liabilities Arising from Obtaining Right-of-Use Assets		941	949	819
Supplemental Schedule of Non-Cash Investing and Financing Activities:
Dividends and Distributions Payable		44,201	41,259	37,178
Exchange of Limited Partner Units for Common Stock/General Partner Units
Conversion of Limited Partner Units to Common Stock / General Partner Units		0	0	0
Assumption of Other Assets in Connection with the Acquisition of Real Estate		0	0	3,611
Assumption of Liabilities in Connection with the Acquisition of Real Estate		528	2,115	1,990
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate		55,876	86,456	82,526
Tenant Improvements Funded by Tenant		3,878	610	28,559
Write-off of Fully Depreciated Assets		(33,529)	(35,716)	(36,799)
First Industrial, L.P. | Limited Partner Units
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income		7,073	8,474	6,183
Exchange of Limited Partner Units for Common Stock/General Partner Units
Conversion of Limited Partner Units to Common Stock / General Partner Units		(1,332)	(2,444)	(1,761)
First Industrial, L.P. | General Partner Units
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income		274,628	359,045	270,855
Exchange of Limited Partner Units for Common Stock/General Partner Units
Conversion of Limited Partner Units to Common Stock / General Partner Units		$ 1,332	$ 2,444	$ 1,761

[1] (B) Gross proceeds and gain on sale of real estate include the sale of two land parcels for the year ended December 31, 2023 and one land parcel for each of the years ended December 31, 2022 and 2021.