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NONCONTROLLING INTERESTS - Operating Partnership Ownership (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2021
Operating Partnership Ownership
OP Units outstanding which are not owned by the general partner (as a percent)	0.60%						0.80%
OP units outstanding (in shares)	1,460,520			7,008,397			1,901,595
Adjustment for noncontrolling interests in the Operating Partnership	$ 3,990	$ 13,349	$ 10,356	$ (14,764)	$ (63,025)	$ (32,102)
CubeSmart, L.P. and Subsidiaries
Operating Partnership Ownership
Adjustment for noncontrolling interests in the Operating Partnership	$ 3,990	$ 13,349	$ 10,356	$ (14,764)	$ (63,025)	$ (32,102)

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- Definition

Represents the percentage of ownership in operating partnership not owned by the general partner.

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Change in noncontrolling interest during the period as a result of a change in the redemption value of redeemable noncontrolling interest.

+ References

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The number of units or equivalent units outstanding for all classes.

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