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ORGANIZATION AND NATURE OF OPERATIONS (Details)	12 Months Ended
	Dec. 31, 2021 segment state
Number of states in which self-storage facilities are located | state	24
Number of reportable segments | segment	1
Common stock, conversion ratio	1
CubeSmart, L.P. and Subsidiaries
Percentage of the entity's partnership interest in Operating Partnership	99.20%

X

- Definition

The shares of common stock into which another convertible security can be converted, or shares of common stock into which another class of common stock can be converted.

+ References

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599

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- Definition

The number of states the entity operates in as of the balance sheet date.

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