The interest coverage ratio permitted under the terms of a senior credit facility covenant.

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The leverage ratio permitted under the terms of a senior credit facility covenant.

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The secured leverage ratio permitted under the terms of a senior credit facility covenant.

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The covenant percentage permitted under the terms of a senior credit facility of unencumbered assets to unsecured indebtedness.

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Prepayment penalty on early extinguishment of debt.

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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Amount, after accumulated amortization, of debt discount (premium).

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Weighted average interest rate of debt outstanding.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Gross amount of debt extinguished.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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UNSECURED SENIOR NOTES (Details) $ in Thousands						12 Months Ended
UNSECURED SENIOR NOTES (Details) $ in Thousands	Dec. 23, 2021 USD ($)	Nov. 30, 2021 USD ($)	Apr. 04, 2017 USD ($)	Oct. 26, 2015 USD ($)	Dec. 17, 2013 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jan. 24, 2019 USD ($)
Mortgage loans and Notes payable
Less: Loan procurement costs, net						$ (2,322)	$ (3,275)
Total unsecured senior notes, net						2,768,209	2,030,372
Loss on early extinguishment of debt						(20,328)	(18,020)
CubeSmart, L.P. and Subsidiaries
Mortgage loans and Notes payable
Less: Loan procurement costs, net						(2,322)	(3,275)
Total unsecured senior notes, net						2,768,209	2,030,372
Loss on early extinguishment of debt						(20,328)	(18,020)
Senior Notes
Mortgage loans and Notes payable
Senior notes, principal amount						2,800,000	2,050,000
Less: Discount on issuance of notes, net						(13,455)	(7,470)
Less: Loan procurement costs, net						(18,336)	(12,158)
Total unsecured senior notes, net						$ 2,768,209	2,030,372
Senior Notes \| Maximum
Mortgage loans and Notes payable
Consolidated leverage ratio						0.60
Secured debt leverage ratio						0.40
Senior Notes \| Minimum
Mortgage loans and Notes payable
Consolidated interest coverage ratio						1.50
Financial and customary covenant, minimum unencumbered asset (as a percent)						150.00%
Senior notes 4.375% due December 15, 2023
Mortgage loans and Notes payable
Senior notes, principal amount							300,000	$ 300,000
Interest rate (as a percent)	4.375%		4.375%		4.375%	4.375%		4.375%
Effective interest rate (as a percent)						4.33%
Effective weighted average interest rate (as a percent)			3.495%		4.501%	4.33%
Proceeds from senior notes			$ 50,000		$ 250,000
Repayment of outstanding debt	$ 300,000
Loss on early extinguishment of debt	20,300
Prepayment penalty on early extinguishment of debt	20,000
Loan procurement amortization expense - early repayment of debt	$ 300
Debt instrument, redemption percentage			105.04%		98.995%
Senior notes 4.000% due 2025
Mortgage loans and Notes payable
Senior notes, principal amount						$ 300,000	300,000
Interest rate (as a percent)			4.00%	4.00%		4.00%
Effective interest rate (as a percent)			3.811%	4.032%		3.99%
Effective weighted average interest rate (as a percent)						3.994%
Proceeds from senior notes			$ 50,000	$ 250,000
Debt instrument, redemption percentage			101.343%	99.735%
Senior Notes 3.125% Due 2026
Mortgage loans and Notes payable
Senior notes, principal amount						$ 300,000	300,000
Interest rate (as a percent)						3.125%
Effective interest rate (as a percent)						3.18%
Senior Notes 2.250 % Due 2028
Mortgage loans and Notes payable
Senior notes, principal amount						$ 550,000
Interest rate (as a percent)		2.25%				2.25%
Effective interest rate (as a percent)						2.33%
Proceeds from senior notes		$ 550,000
Senior Notes 4.375 % Due 2029
Mortgage loans and Notes payable
Senior notes, principal amount						$ 350,000	350,000
Interest rate (as a percent)						4.375%
Effective interest rate (as a percent)						4.46%
Senior Notes 3.000 % Due 2030
Mortgage loans and Notes payable
Senior notes, principal amount						$ 350,000	350,000
Interest rate (as a percent)						3.00%
Effective interest rate (as a percent)						3.04%
Senior Notes 2.000 % Due 2031
Mortgage loans and Notes payable
Senior notes, principal amount						$ 450,000	$ 450,000
Interest rate (as a percent)						2.00%
Effective interest rate (as a percent)						2.10%
Senior Notes 2.500 % Due 2032
Mortgage loans and Notes payable
Senior notes, principal amount						$ 500,000
Interest rate (as a percent)		2.50%				2.50%
Effective interest rate (as a percent)		2.50%				2.59%
Proceeds from senior notes		$ 500,000