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Description of the Business	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of the Business	Description of the Business Public Storage (referred to herein as “the Company,” “we,” “us,” or “our”), a Maryland real estate investment trust (“REIT”), was organized in 1980. Our principal business activities include the ownership and operation of self-storage facilities that offer storage spaces for lease, generally on a month-to-month basis, for personal and business use, ancillary activities such as tenant reinsurance, merchandise sales, and third party management, as well as the acquisition and development of additional self-storage space. At September 30, 2022, we had direct and indirect equity interests in 2,836 self-storage facilities (with approximately 202.2 million net rentable square feet) located in 40 states in the United States (“U.S.”) operating under the Public Storage® name, and 1.2 million net rentable square feet of commercial and retail space. At September 30, 2022, we owned a 35% common equity interest in Shurgard Self Storage SA (“Shurgard”), a public company traded on the Euronext Brussels under the “SHUR” symbol, which owned 259 self-storage facilities (with approximately 14 million net rentable square feet) located in seven Western European countries, all operating under the Shurgard® name. On July 20, 2022, in connection with the closing of PS Business Parks, Inc.’s (“PSB”) merger transaction with affiliates of Blackstone Real Estate (“Blackstone”), we completed the sale of our 41% common equity interest in PSB in its entirety. Prior to the merger transaction, PSB was a REIT traded on the New York Stock Exchange under the “PSB” symbol, which owned commercial properties, primarily multi-tenant industrial, flex, and office space. Refer to Note 4. Investments in Unconsolidated Real Estate Entities for transaction information and our accounting treatment of the sale.

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- Definition

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.

+ References

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 https://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 https://asc.fasb.org/topic&trid=2134479

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- References

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