Description of Business	3 Months Ended
Mar. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Description of Business	NOTE 1. — DESCRIPTION OF BUSINESS Getty Realty Corp. (together with its subsidiaries, unless otherwise indicated or except where the context otherwise requires, “we,” “us” or “our”) is the leading publicly traded real estate investment trust (“REIT”) in the United States specializing in the acquisition, ownership, leasing, financing and redevelopment of convenience stores, gasoline stations and other automotive-related and retail real estate, including express car washes, automotive service centers, automotive parts retailers and select other properties. Our predecessor was originally founded in 1955 and our common stock was listed on the NYSE in 1997. As of March 31, 2021, our portfolio included 960 properties located in 35 states and Washington, D.C., and our tenants operated under a variety of national and regional retail brands. Our company is headquartered in New York, New York and is internally managed by our management team, which has extensive experience acquiring, owning and managing convenience stores, gasoline stations and other automotive-related and retail real estate.

The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI http://asc.fasb.org/topic&trid=2134479

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