v3.25.2
EARNINGS PER SHARE AND UNIT AND SHAREHOLDERS' EQUITY AND CAPITAL - Summary of OP and Common Units (Details) - shares
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
CubeSmart, L.P. and Subsidiaries      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Outstanding units of noncontrolling interest in the Operating Partnership (in shares) 1,103,240 1,194,705 1,238,205