Subsequent Events	9 Months Ended
Sep. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	17. SUBSEQUENT EVENTS On October 3, 2022, the Company declared a quarterly dividend of $1.08 per common share. The dividend was paid on October 26, 2022 to shareholders of record on October 14, 2022. The total dividend paid amounted to $91.8 million. As discussed in Note 16, subsequent to September 30, 2022, the Company acquired seven self-storage facilities for an aggregate purchase price of $142.0 million. As discussed in Notes 10 and 16, subsequent to September 30, 2022, certain unconsolidated joint ventures of the Company acquired seven self-storage facilities for an aggregate purchase price of $126.5 million, of which the Company's share was $25.3 million.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI https://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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