CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 102,173	$ 77,139	$ 225,547	$ 194,148
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation			104,077	96,808
Amortization of Debt Issuance Costs	911	905	2,735	2,714
Other Amortization, Including Equity Based Compensation			27,404	25,136
Equity in Income of Joint Venture	(599)	(1,530)	(3,161)	(30,598)
Distributions from the Joint Venture			2,236	6,584
Gain on Sale of Real Estate	(56,814)	(34,368)	(93,801)	(47,421)
Straight-line Rental Income and Expense, Net			(12,151)	(15,891)
Increase in Tenant Accounts Receivable, Prepaid Expenses and Other Assets, Net			(5,013)	(3,835)
Increase in Accounts Payable, Accrued Expenses, Other Liabilities, Rents Received in Advance and Security Deposits			27,835	12,799
Net Cash Provided by Operating Activities			275,708	240,444
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of Real Estate			(44,384)	(93,504)
Additions to Investment in Real Estate and Non-Acquisition Tenant Improvements and Lease Costs			(159,040)	(280,536)
Net Proceeds from Sales of Investments in Real Estate			135,544	58,440
Contributions to and Investments in Joint Venture			(3,942)	(10,060)
Other Investing Activity			4,317	2,780
Net Cash Used in Investing Activities			(67,505)	(322,880)
CASH FLOWS FROM FINANCING ACTIVITIES:
Financing Issuance Costs			0	(9)
Income Taxes Paid on Vested Equity Compensation			(2,070)	(2,510)
Common Stock Dividends and Unit Distributions Paid			(143,395)	(126,148)
Repayments on Mortgage Loan Payable			(250)	(240)
Proceeds from Unsecured Credit Facility			236,000	278,000
Repayments on Unsecured Credit Facility			(287,000)	(146,000)
Distributions to Noncontrolling Interests			(143)	(11,523)
Net Cash Used in Financing Activities			(196,858)	(8,430)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash			11,345	(90,866)
Cash, Cash Equivalents and Restricted Cash, Beginning of Year			43,844	145,118
Cash, Cash Equivalents and Restricted Cash, End of Period	55,189	54,252	55,189	54,252
SUPPLEMENTAL INFORMATION TO STATEMENTS OF CASH FLOWS:
Interest Expense Capitalized in Connection with Development Activity			6,327	11,013
Cash Paid for Operating Lease Liabilities			2,608	2,501
Supplemental Schedule of Non-Cash Operating Activities:
Operating Lease Liabilities Arising from Obtaining Right-of-Use Assets			354	661
Supplemental Schedule of Non-Cash Investing and Financing Activities:
Dividends and Distributions Payable	50,970	44,329	50,970	44,329
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0	0	0
Assumption of Liabilities in Connection with the Acquisition of Real Estate			688	351
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate			34,310	66,855
Improvements Funded by Tenant			0	3,366
Write-off of Fully Depreciated Assets			(26,543)	(21,557)
Noncontrolling Interests
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	2,810	2,127
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	(55)	(396)	(62)	(1,060)
Common Stock
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units			0	0
Additional Paid-in Capital
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	55	396	62	1,060
First Industrial, L.P.
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	102,173	77,139	225,547	194,148
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation			104,077	96,808
Amortization of Debt Issuance Costs	911	905	2,735	2,714
Other Amortization, Including Equity Based Compensation			27,404	25,136
Equity in Income of Joint Venture	(599)	(1,530)	(3,161)	(30,598)
Distributions from the Joint Venture			2,236	6,584
Gain on Sale of Real Estate	(56,814)	(34,368)	(93,801)	(47,421)
Straight-line Rental Income and Expense, Net			(12,151)	(15,891)
Increase in Tenant Accounts Receivable, Prepaid Expenses and Other Assets, Net			(4,976)	(3,851)
Increase in Accounts Payable, Accrued Expenses, Other Liabilities, Rents Received in Advance and Security Deposits			27,835	12,799
Net Cash Provided by Operating Activities			275,745	240,428
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of Real Estate			(44,384)	(93,504)
Additions to Investment in Real Estate and Non-Acquisition Tenant Improvements and Lease Costs			(159,040)	(280,536)
Net Proceeds from Sales of Investments in Real Estate			135,544	58,440
Contributions to and Investments in Joint Venture			(3,942)	(10,060)
Other Investing Activity			4,317	2,780
Net Cash Used in Investing Activities			(67,505)	(322,880)
CASH FLOWS FROM FINANCING ACTIVITIES:
Financing Issuance Costs			0	(9)
Income Taxes Paid on Vested Equity Compensation			(2,070)	(2,510)
Common Stock Dividends and Unit Distributions Paid			(143,395)	(126,148)
Contributions from Noncontrolling Interests			31	27
Repayments on Mortgage Loan Payable			(250)	(240)
Proceeds from Unsecured Credit Facility			236,000	278,000
Repayments on Unsecured Credit Facility			(287,000)	(146,000)
Distributions to Noncontrolling Interests			(211)	(11,534)
Net Cash Used in Financing Activities			(196,895)	(8,414)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash			11,345	(90,866)
Cash, Cash Equivalents and Restricted Cash, Beginning of Year			43,844	145,118
Cash, Cash Equivalents and Restricted Cash, End of Period	55,189	54,252	55,189	54,252
SUPPLEMENTAL INFORMATION TO STATEMENTS OF CASH FLOWS:
Interest Expense Capitalized in Connection with Development Activity			6,327	11,013
Cash Paid for Operating Lease Liabilities			2,608	2,501
Supplemental Schedule of Non-Cash Operating Activities:
Operating Lease Liabilities Arising from Obtaining Right-of-Use Assets			354	661
Supplemental Schedule of Non-Cash Investing and Financing Activities:
Dividends and Distributions Payable	50,970	44,329	50,970	44,329
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0	0	0
Assumption of Liabilities in Connection with the Acquisition of Real Estate			688	351
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate			34,310	66,855
Improvements Funded by Tenant			0	3,366
Write-off of Fully Depreciated Assets			(26,543)	(21,557)
First Industrial, L.P. | Limited Partner Units
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	2,733	1,931
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	(55)	(396)	(62)	(1,060)
First Industrial, L.P. | General Partner Units
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	99,332	74,986
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	$ 55	$ 396	$ 62	$ 1,060