Represents the number of acres of the real estate property.

No definition available.

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- Definition

Payments of cash for lease rent to the related party.

+ References

No definition available.

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- Definition

Represents the operating lease fixed rent due per month to the related party.

+ References

No definition available.

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- Definition

Represents the area of the real estate property subject to an operating lease.

+ References

No definition available.

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- Definition

For an unclassified balance sheet, amounts due from an entity in which the reporting entity shares joint control with another party or group.

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- Definition

Amounts due from an entity in which the reporting entity shares joint control with another party or group, due after 1 year (or 1 business cycle).

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- Definition

Amount of expenses related to the managing member or general partner for management of the day-to-day business functions of the limited liability company (LLC) or limited partnership (LP).

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The percentage charged for managing real estate properties.

+ References

No definition available.

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RELATED PARTY TRANSACTIONS (Details) (USD $)	12 Months Ended
RELATED PARTY TRANSACTIONS (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
RELATED PARTY TRANSACTIONS
Area of corporate office (in acres)	50cube_AcreageOfRealEstateProperty
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| Office space subject to lease
RELATED PARTY TRANSACTIONS
Aggregate amount of lease payments incurred	$ 500,000	$ 500,000	$ 500,000
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| The Parkview Building 6745 Engle Road; and 6751 Engle Road
RELATED PARTY TRANSACTIONS
Approximate Square Footage	21,900
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| The Parkview Building 6745 Engle Road; and 6751 Engle Road \| Minimum
RELATED PARTY TRANSACTIONS
Fixed rent per month	25,673
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| The Parkview Building 6745 Engle Road; and 6751 Engle Road \| Maximum
RELATED PARTY TRANSACTIONS
Fixed rent per month	31,205
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| 6745 Engle Road Suite 100
RELATED PARTY TRANSACTIONS
Approximate Square Footage	2,212
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| 6745 Engle Road Suite 100 \| Minimum
RELATED PARTY TRANSACTIONS
Fixed rent per month	3,051
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| 6745 Engle Road Suite 100 \| Maximum
RELATED PARTY TRANSACTIONS
Fixed rent per month	3,709
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| 6745 Engle Road Suite 110
RELATED PARTY TRANSACTIONS
Approximate Square Footage	1,731
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| 6745 Engle Road Suite 110 \| Minimum
RELATED PARTY TRANSACTIONS
Fixed rent per month	2,387
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| 6745 Engle Road Suite 110 \| Maximum
RELATED PARTY TRANSACTIONS
Fixed rent per month	2,901
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| 6751 Engle Road Suites C and D
RELATED PARTY TRANSACTIONS
Approximate Square Footage	3,000
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| 6751 Engle Road Suites C and D \| Minimum
RELATED PARTY TRANSACTIONS
Fixed rent per month	3,137
Lease agreements with related parties \| CubeSmart, L.P. and Subsidiaries \| 6751 Engle Road Suites C and D \| Maximum
RELATED PARTY TRANSACTIONS
Fixed rent per month	3,771
Joint ventures related to affiliated real estate investments
RELATED PARTY TRANSACTIONS
Management fee	900,000	100,000	200,000
Amount due to the entity from joint venture	1,600,000	2,100,000
Mortgage loans receivable from consolidated joint ventures	$ 10,800,000	$ 15,800,000
Joint ventures related to affiliated real estate investments \| Minimum
RELATED PARTY TRANSACTIONS
Management fee (as a percent)	5.00%
Joint ventures related to affiliated real estate investments \| Maximum
RELATED PARTY TRANSACTIONS
Management fee (as a percent)	6.00%