Organization	9 Months Ended
Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization First Industrial Realty Trust, Inc. (the "Company") is a self-administered and fully integrated real estate company which owns, manages, acquires, sells, develops and redevelops industrial real estate. The Company is a Maryland corporation organized on August 10, 1993 and a real estate investment trust ("REIT") as defined in the Internal Revenue Code of 1986. Unless stated otherwise or the context otherwise requires, the terms "we," "our" and "us" refer to the Company and its subsidiaries, including its operating partnership, First Industrial, L.P. (the "Operating Partnership"), and its consolidated subsidiaries. We began operations on July 1, 1994. The Company's operations are conducted primarily through the Operating Partnership, of which the Company is the sole general partner, with an approximate 96.2% ownership interest at September 30, 2015, and through its taxable REIT subsidiaries. We also conduct operations through eight other limited partnerships (the "Other Real Estate Partnerships") and limited liability companies ("LLCs"), the operating data of which, together with that of the Operating Partnership and the taxable REIT subsidiaries, is consolidated with that of the Company as presented herein. The Operating Partnership holds at least a 99% limited partnership interest in each of Other Real Estate Partnerships. The general partners of the Other Real Estate Partnerships are separate corporations, wholly-owned by the Company, each with at least a .01% general partnership interest in the Other Real Estate Partnerships. The Other Real Estate Partnerships' operating data is presented herein on a consolidated basis. See Note 2 to the Consolidated Financial Statements. The Company does not have any significant assets or liabilities other than its investment in the Operating Partnership and its 100% ownership interest in the general partners of the Other Real Estate Partnerships. Noncontrolling interest of approximately 3.8% at September 30, 2015 represents the aggregate partnership interest in the Operating Partnership held by the limited partners thereof. Profits, losses and distributions of the Operating Partnership, the LLCs and the Other Real Estate Partnerships are allocated to the general partner and the limited partners or the members, as applicable, of such entities in accordance with the provisions contained within their respective organizational documents. We also provide various services to two joint ventures (the "2003 Net Lease Joint Venture" and the "2007 Europe Joint Venture," collectively the "Joint Ventures"). Our noncontrolling equity ownership interests in the 2003 Net Lease Joint Venture and 2007 Europe Joint Venture are 15% and 10%, respectively. During the nine months ended September 30, 2015, the 2003 Net Lease Joint Venture sold its last remaining industrial property comprising approximately 0.8 million square feet of gross leasable area ("GLA"). At September 30, 2015, the 2007 Europe Joint Venture did not own any properties. The Joint Ventures are accounted for under the equity method of accounting. As of September 30, 2015, we owned 629 industrial properties located in 25 states, containing an aggregate of approximately 63.9 million square feet of GLA. Of the 629 properties owned on a consolidated basis, none of them are directly owned by the Company.

Organization

First Industrial Realty Trust, Inc. (the "Company") is a self-administered and fully integrated real estate company which owns, manages, acquires, sells, develops and redevelops industrial real estate. The Company is a Maryland corporation organized on August 10, 1993 and a real estate investment trust ("REIT") as defined in the Internal Revenue Code of 1986. Unless stated otherwise or the context otherwise requires, the terms "we," "our" and "us" refer to the Company and its subsidiaries, including its operating partnership, First Industrial, L.P. (the "Operating Partnership"), and its consolidated subsidiaries.

We began operations on July 1, 1994. The Company's operations are conducted primarily through the Operating Partnership, of which the Company is the sole general partner, with an approximate 96.2% ownership interest at September 30, 2015, and through its taxable REIT subsidiaries. We also conduct operations through eight other limited partnerships (the "Other Real Estate Partnerships") and limited liability companies ("LLCs"), the operating data of which, together with that of the Operating Partnership and the taxable REIT subsidiaries, is consolidated with that of the Company as presented herein. The Operating Partnership holds at least a 99% limited partnership interest in each of Other Real Estate Partnerships. The general partners of the Other Real Estate Partnerships are separate corporations, wholly-owned by the Company, each with at least a .01% general partnership interest in the Other Real Estate Partnerships. The Other Real Estate Partnerships' operating data is presented herein on a consolidated basis. See Note 2 to the Consolidated Financial Statements. The Company does not have any significant assets or liabilities other than its investment in the Operating Partnership and its 100% ownership interest in the general partners of the Other Real Estate Partnerships. Noncontrolling interest of approximately 3.8% at September 30, 2015 represents the aggregate partnership interest in the Operating Partnership held by the limited partners thereof.

Profits, losses and distributions of the Operating Partnership, the LLCs and the Other Real Estate Partnerships are allocated to the general partner and the limited partners or the members, as applicable, of such entities in accordance with the provisions contained within their respective organizational documents.

We also provide various services to two joint ventures (the "2003 Net Lease Joint Venture" and the "2007 Europe Joint Venture," collectively the "Joint Ventures"). Our noncontrolling equity ownership interests in the 2003 Net Lease Joint Venture and 2007 Europe Joint Venture are 15% and 10%, respectively. During the nine months ended September 30, 2015, the 2003 Net Lease Joint Venture sold its last remaining industrial property comprising approximately 0.8 million square feet of gross leasable area ("GLA"). At September 30, 2015, the 2007 Europe Joint Venture did not own any properties. The Joint Ventures are accounted for under the equity method of accounting.

As of September 30, 2015, we owned 629 industrial properties located in 25 states, containing an aggregate of approximately 63.9 million square feet of GLA. Of the 629 properties owned on a consolidated basis, none of them are directly owned by the Company.