Basis of Presentation	12 Months Ended
Dec. 31, 2011
Basis of Presentation and Summary of Significant Accounting Policies [Abstract]
Basis of Presentation	2. Basis of Presentation First Industrial Realty Trust, Inc. is the sole general partner of the Operating Partnership, with an approximate 94.3% and 92.8% common ownership interest at December 31, 2011 and 2010, respectively. Noncontrolling interest at December 31, 2011 and 2010 of 5.7% and 7.2%, respectively, represents the aggregate partnership interest in the Operating Partnership held by the limited partners thereof. Our consolidated financial statements at December 31, 2011 and 2010 and for each of the years ended December 31, 2011, 2010 and 2009 include the accounts and operating results of the Company and our subsidiaries. Such financial statements present our noncontrolling equity interests in our Joint Ventures under the equity method of accounting. All intercompany transactions have been eliminated in consolidation.

The entire disclosure for the business description and basis of presentation concepts. Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).

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