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Forward Contract Indexed to Equity, Settlement, Cash, Amount Termination expense KeyBank Bridge Loan KeyBank Bridge Loan [Member] Keybank bridge loan. Payments to other noncontrolling interest Payments to other noncontrolling interest Distributions paid to other noncontrolling interests Segments [Domain] Segments Line of Credit Facility, Increase, Accrued Interest Proceeds received from the Underwritten Public Offering Number of unconsolidated real estate development Number of Unconsolidated Real Estate Development Number of unconsolidated real estate development. Trademarks acquired amount Finite-Lived Trademarks, Gross Additional loan proceeds Proceeds from Short-Term Debt Proceeds from Short-Term Debt, Total Concentration Risk Type Concentration Risk Type [Axis] Distributions to noncontrolling interests in our Operating Partnership Distributions to Noncontrolling Interests in our Operating Partnership Distributions to noncontrolling interests in our operating partnership. Distributions to noncontrolling interests in our Operating Partnership Summary of Related Party Costs Schedule of Related Party Transactions [Table Text Block] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Balance Sheet Location Statement of Financial Position Location, Balance [Domain] Payroll [Member] Payroll. Payroll Percentage Of Asset Acquisition Consideration Payable In Cash Percentage of asset acquisition consideration payable in cash. Percentage of asset acquisition consideration payable in cash Supplemental disclosure of noncash activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Public Offering [Member] Public offering. Public Offering [Member] Plan Name Plan Name [Axis] Swingline Loans Swingline Loans [Member] Swingline loans. Equity [Abstract] Entity Current Reporting Status Entity Current Reporting Status Real estate and construction in process included in accounts payable and accrued liabilities Real Estate And Construction In Process Included In Accounts Payable Real estate and construction in process included in accounts payable and accrued liabilities. Scarborough, Ontario Scarborough Ontario [Member] Scarborough, Ontario. Operating expenses: Operating Expenses [Abstract] Fair Value, Inputs, Level 2 [Member] Significant Other Observable Inputs (Level 2) Credit facility. Credit Facility [Member] Credit Facility [Member] Credit Facility SmartCentres Self Storage Facilities [Member] SmartCentres self storage facilities. Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Officers and Directors [Member] Officers and directors. Officers and Directors Additional shares authorised Common Stock, shares authorized Common Stock, Shares Authorized Finite-Lived Intangible Asset, Expected Amortization, Year Four Total estimated future amortization expense of intangible assets, year 2028 Accounts Receivable, after Allowance for Credit Loss, Total Accounts Receivable, after Allowance for Credit Loss Receivables due from related parties Preferred Stock, par value Temporary Equity, Par or Stated Value Per Share Strategic Storage Growth Trust I I I Tenant Protection Program Revenue [Member] Strategic Storage Growth Trust I I I Tenant Protection Program Revenue [Member] Strategic Storage Growth Trust I I I Tenant Protection Program Revenue RBC JV Term Loan III[Member] Rbc jv term loan III. RBC JV Term Loan III Product and Service Product and Service [Axis] Preferred stock, voting rights condition Preferred Stock, Voting Rights Percentage of property occupied at time of acquisition Percentage of Property Occupied at Time of Acquisition Percentage of property occupied at time of acquisition. Document Fiscal Period Focus Document Fiscal Period Focus Managed REIT Platform Expenses Managed R E I T Platform Expenses [Member] Managed REIT platform expenses. Debt Instrument Variable Rate Debt Instrument Fixed Rate Debt Instrument, Interest Rate, Stated Percentage Debt instrument fixed rate Entity Shell Company Entity Shell Company Preferred Stock, shares outstanding Temporary Equity, Shares Outstanding Canadian Foreign Exchange Forwards [Member] Canadian foreign exchange forwards. CAD FX Forwards Segment Reporting Segment Reporting, Policy [Policy Text Block] Cash and Cash Equivalents, at Carrying Value, Ending Balance Cash and Cash Equivalents, at Carrying Value, Beginning Balance Cash and Cash Equivalents, at Carrying Value, Total Cash and cash equivalents Cash and Cash Equivalent Preferred stock redemption description Preferred Stock, Redemption Terms Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Distributions to other noncontrolling interests Dupont, Ontario [Member] Dupont, Ontario [Member] Dupont Ontario Common Stock, Shares, Issued, Total Common Stock, shares issued Common Stock, Shares, Issued Line of Credit Facility Transaction Costs Line of credit facility transaction costs. Transaction cost Statement [Table] Statement [Table] Loss contingency other non-cancellable future payment due year three Loss Contingency Other Non-Cancellable Future Payments Due in Year Three Loss contingency other non-cancellable future payments due in year three. KeyBank SST IV CMBS Loan Key Bank Sst Iv Cmbs Loan [Member] KeyBank SST IV CMBS loan. Class T D and I Common Shares [Member] Class t d and i common shares. Class T-D and I Common Shares Organization And Nature Of Operations [Table] Organization And Nature Of Operations [Table] Organization and Nature of Operations [Table] Long Term Incentive Plan Units [Member] Long term incentive plan units. Unvested LTIP Units LTIPs Third-Party Third-Party Payor [Member] Canadian J V Properties [Member] Canadian JV properties. Canadian J V Properties Payments to Acquire Businesses, Gross Deposits on acquisitions Debt Investment Owned, Balance, Principal Amount Statement [Line Items] Statement [Line Items] Business Acquisition, Acquiree Business Combination [Domain] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Sherwood Park Alberta [Member] Sherwood Park, Alberta. Sherwood Park, Alberta Entity Filer Category Entity Filer Category Percentage Of Revenue From Tenant Protection Programs Percentage Of Revenue From Tenant Protection Programs Percentage of revenue from tenant protection programs SmartStop Storage Advisors, LLC SmartStop Storage Advisors, LLC [Member] SmartStop storage advisors, llc. Loss contingency other non cancellable future payments due in year one. Loss Contingency Other Non-Cancellable Future Payments Due in Year One Loss contingency other non-cancellable future payments due in year one Depreciation of Personal Property Assets Depreciation Of Personal Property Assets Policy [Text Block] Depreciation Of Personal Property Assets Policy [Text Block] Liabilities and Equity Total liabilities, temporary equity and equity Debt Instrument [Line Items] Debt Instrument [Line Items] Strategic Storage Growth Trust I I I Advisory Agreement [Member] Strategic Storage Growth Trust I I I Advisory Agreement [Member] Strategic Storage Growth Trust I I I Advisory Agreement 2027 Long-Term Debt, Maturity, Year Three Long-Lived Tangible Asset Long-Lived Tangible Asset [Axis] Severance payments to be made to employees Severance Costs SST IV Merger Agreement S S T I V Merger Agreement [Member] SST IV merger agreement. Required percentage of self storage related assets of merger entity Required Percentage Of Self Storage Related Assets Of Merger Entity Required percentage of self storage related assets of merger entity. Midland North Carolina CMBS Loan Midland North Carolina Cmbs Loan [Member] Midland North Carolina CMBS loan. Quarterly Financial Information Disclosure [Abstract] Latest Tax Year [Member] Proceeds from Issuance of Debt Gross proceeds from issuance of non-credit facility debt Distributions from Joint Ventures Derivative [Line Items] Derivative [Line Items] Proceeds from Dividends Received Dividend distribution received Self Administration Transaction Self Administration Transaction Self Administration Transaction [Member] Self administration transaction. Valuation allowance Valuation allowance Deferred Tax Assets, Valuation Allowance Subsequent Event [Line Items] Net income attributable to other noncontrolling interests Net Income Loss Attributable to Other Noncontrolling Interests Net income loss attributable to other noncontrolling interests. Royal Bank of Canada Prime Rate Canada Prime Rate [Member] Canada prime rate. SOFR Cap December 1, 2025 Secured Overnight Financing Rate Sofr Overnight Index Matured December One TwoThousand Twenty Five [Member] Secured overnight financing rate sofr overnight index matured december one twothousand twenty five member. Goodwill, Beginning Balance Goodwill, Ending Balance Goodwill, Total Goodwill Goodwill SST VI OP Units and SLP SST VI OP Units and SLP [Member] SST VI OP Units and SLP [Member] Income Taxes Paid Cash paid for income taxes Key Bank Key Bank [Member] Key bank. 2025 KeyBank Bridge Loan Two Thousand Twenty Five KeyBank Bridge Loan [Member] Two thousand twenty five keybank bridge loan. SST VI OP S S T V I O P [Member] SST VI OP. Increased the principal borrowing amount Line of Credit Facility, Increase (Decrease), Net, Total Line of credit facility, increase (decrease), net Line of Credit Facility, Increase (Decrease), Net Percentage of Investment Fee Percentage of investment fee. Percentage of investment fee Declaration of Distributions Dividends [Text Block] Dividends [Text Block] Geographical Geographical [Domain] Real Estate Owned, Transfer to Real Estate Owned Deposit applied to the purchase of real estate Payments to acquire intangible assets Payments to Acquire Intangible Assets Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] CORRA Swap March 7, 2027 Canadian Overnight Repo Rate Average Matured March Seven TwoThousand Twenty Seven [Member] Canadian overnight repo rate average matured march seven twot housand twenty seven member Canadian Citi Bank Loan Canadian Citi Bank Loan [Member] Canadian Citibank loan. Fourth Anniversary Preferred Stock Redemption Period Four [Member] preferred stock redemption period four. SOFR Cap December 1, 2026 Secured Overnight Financing Rate Sofr Overnight Index Matured December One TwoThousand Twenty Six [Member] Secured overnight financing rate sofr overnight index matured december one twothousand twenty six member Proceeds from Sale of property Proceeds from Sale, Property, Held-for-Sale Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Employer matching contribution, percent Series A Convertible Preferred Stock Purchase Agreement Series A Convertible Preferred Stock Purchase Agreement [Member] Series A convertible preferred stock purchase agreement. CMBS SASB Loan C M B S S A S B Loan [Member] CMBS SASB loan. Oshawa, Ontario Oshawa Ontario [Member] Oshawa, Ontario Derivative Instruments And Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Accounts Receivable, Allowance for Credit Loss, Beginning Balance Accounts Receivable, Allowance for Credit Loss, Ending Balance Accounts Receivable, Allowance for Credit Loss Allowance for doubtful accounts Additional Paid in Capital, Common Stock, Ending Balance Additional Paid in Capital, Common Stock, Beginning Balance Additional paid-in capital Additional Paid in Capital, Common Stock Class A-2 Units (contingent earnout) Class A-2 Units Class A-2 Units. Class A-2 Units Description for termination of offering. Description For Termination Of Offering Description for termination of offering Capitalization rate leverage ratio Capitalization Rate Leverage Ratio Capitalization rate leverage ratio. Debt Issuance Costs, Net, Total Debt issuance costs, net Debt Issuance Costs, Net Deferred Debt Issuance Cost Loan to value ratio Loan To Value Ratio Loan to value ratio O 2025 Q1 Dividends [Member] O 2025 Q1 Dividends. O 2025 Q1 Dividends Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Tax withholding (net settlement) related to vesting of restricted stock Tax withholding (net settlement redemption) related to vesting of restricted stock Disposition Fee Member. Disposition Fee [Member] Disposition Fee Related Party [Member] Related Party Shares issued pursuant to distribution reinvestment plan, value Issuance of shares for distribution reinvestment plan Stock Issued During Period, Value, Dividend Reinvestment Plan Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Property Plant And Equipment [Line Items] Property, Plant and Equipment [Line Items] Loss contingency other non-cancellable future payment due year two Loss Contingency Other Non-Cancellable Future Payment Due Year Two Loss contingency other non-cancellable future payment due year two. Percentage of upfront sales commission Percentage of Upfront Sales Commission Upfront sales commission Currency Currency [Axis] Our former external property management fee Property Management Monthly Management Fee Property management monthly management fee. Initial Advances under Two Thousand Twenty Four Credit Facility. Initial Advances under Two Thousand Twenty Four Credit Facility [Member] Hedge Cash Settlement on February Fourteen Two Thousand Twenty Four [Member] Hedge Cash Settlement on February Fourteen Two Thousand Twenty Four [Member] Hedge cash settlement on february fourteen two thousand ttwenty four. Less: Distributions to preferred stockholders Redeemable Preferred Stock Dividends Schedule of Computation of Earnings Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] F I Common Shares [Member] Fi common shares. F-I common shares Secured Loan Secured Loan [Member] Secured loan. Payment of Payroll Withholding Tax on Stock Vesting Payment of payroll withholding tax on stock vesting. Payment of payroll withholding tax on stock vesting Proceeds from Issuance of Preferred Stock and Preference Stock Proceeds from issuance of preferred stock Investment, Name [Axis] Distributions payable Dividends Payable Earnings Per Share, Basic Earnings Per Share, Basic, Total Net income (loss) per Common Stock Class A & Class T share - basic Class FT FD and F1 Common Shares [Member] Class ft fd and f1 common shares. Class F-T F-D and F-1 Common Shares Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Investments In Unconsolidated Real Estate Ventures [Line Items] Investments In Unconsolidated Real Estate Ventures [Line Items] Investments in unconsolidated real Estate ventures. Issuance of shares pursuant to distribution reinvestment plan Stock Issued Debt Issuance Costs Debt, Policy [Policy Text Block] Repayments of Secured Debt Scheduled principal payments on non-credit facility debt Revolving Credit Facility Credit Facility Revolver Revolving Credit Facility [Member] Investments in unconsolidated real estate ventures (Note 4) Real Estate Investments Unconsolidated Real Estate Ventures Real estate investments unconsolidated real estate ventures. Security Interest Termination Event Security Interest Termination Event [Member] Security Interest Termination Event. SOFR Cap July 1, 2025 Secured Overnight Financing Rate Sofr Overnight Index Matured July One TwoThousand Twenty Five [Member] Secured overnight financing rate sofr overnight index matured july one two thousand twenty five Member Redemption period Redemption Period Redemption period. Payments for proceeds from foreign currency hedges. Payments For Proceeds From Foreign Currency Hedges Settlement of foreign currency hedges Master Mortgage Commitment Agreement Master Mortgage Commitment Agreement [Member] Master mortgage commitment agreement. Initial advance under the 2025 KeyBank Acquisition Facility Initial Advances Under Two Thousand Twenty Five Key Bank Acquisition Facility [Member] Initial advances under two thousand twenty five key bank acquisition facility. Cash distribution record date end Dividends Payable, Date of Record Class A-1 Units Class A-1 Units Class A1 Unit [Member] Class A-1 Unit. Payroll Salary and Wage, Excluding Cost of Good and Service Sold Salary and Wage, Excluding Cost of Good and Service Sold, Total Fair Value Notes Payable, Fair Value Disclosure DXD Agreement DXD agreement. DXD Agreement [Member] SmartStop Asset Management Smartstop Asset Management Limited Liability Company [Member] SmartStop Asset Management Limited Liability Company [Member] Real Estate Investment Real Estate Investment [Member] Maximum purchase commitment amount Maximum Purchase Commitment Amount Maximum purchase commitment amount. Employee and Director Long-term Incentive Plan Employee And Director Long Term Incentive Plan [Member] Employee and director long-term incentive plan. Rental Income Rental Income [Member] Rental income . SST VI Advisor [Member] SST VI Advisor. SST VI Advisor Equity: Equity, Attributable to Parent [Abstract] Health Care Organization, Revenue Sources [Domain] Entity Small Business Entity Small Business Convertible Preferred Stock Convertible Preferred Stock Policy [Text Block] Disclosure of accounting policy for convertible preferred stock. Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Schedule of Notional Amounts of Outstanding Derivative Positions Percentage of secured obligation Percentage Of Secured Obligation Percentage of secured obligation. Up to second anniversary. Up To Second Anniversary [Member] Up to Second Anniversary Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Total Accumulated deficit Retained Earnings (Accumulated Deficit) Kingspoint Ontario Kingspoint Ontario [Member] Kingspoint, Ontario Derivative Maturity Payment Derivative maturity payment. Derivative maturity payment SOFR Cap July 1, 2025 Secured Overnight Financing Rate Sofr Overnight Index Matured July One Two Thousand Twenty Five One [Member] Secured overnight financing rate sofr overnight index matured july one two thousand twenty five one. 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Interest Rate Derivatives [Member] Interest rate derivatives Class A units Class A Common stock Common Class A [Member] Interest expense – accretion of fair market value of secured debt Accretion Of Fair Market Value Of Secured Debt Accretion of fair market value of secured debt. Accretion of fair market value adjustment of secured debt Amendment Flag Amendment Flag Requisite minimum outstanding period for conversion eligibility Conversion Of Partnership Units Requisite Minimum Period Outstanding Conversion of partnership units requisite minimum period outstanding. Product and Service Product and Service [Domain] SSGT III Secured Note [Member] SSGT III secured note member. SSGT III Secured Note Trademarks Trademarks Policy [Text Block] Trademarks. Class FT FD and FI Common Shares [Member] Class ft fd and fi common shares. Class F-T F-D and F-I Common Shares Hedge Cash Settlement Matures on August Twenty Seven Two Thousand Twenty Five [Member] Hedge Cash Settlement Matures on August Twenty Seven Two Thousand Twenty Five Hedge Cash Settlement Matures on August Twenty Seven Two Thousand Twenty Five Per Share Data Earnings Per Share, Policy [Policy Text Block] LIABILITIES, TEMPORARY EQUITY, AND EQUITY Liabilities and Equity [Abstract] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Allowance for Doubtful Accounts Accounts Receivable [Policy Text Block] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Other Other Related Party Transaction [Member] Other Related Party Transaction [Member] Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Cad Forward Matured May Twenty Seven Two Thousand Twenty Six [Member] Cad forward matured may twenty seven two thousand twenty six. CAD Forward May 27, 2026 Common Stock Common Stock [Member] Unclassified Common Stock Two Thousand Twenty Seven NBC Loan. Two Thousand Twenty Seven NBC Loans [Member] 2027 NBC Loan RBC JV Term Loan RBC JV Term Loan [Member] RBC JV term loan member. Up to third anniversary. Up To Third Anniversary [Member] Up to Third Anniversary Two thousand twenty four credit facility. Two Thousand Twenty Four Credit Facility [Member] 2024 Credit Facility Long-Term Debt, Maturity, Year One 2025 Number of Properties Covering The Management Regarding Principal Assets Acquired. Number of properties covering the management regarding principal assets acquired. Number of properties covering the management regarding principal assets acquired Schedule of Fair Value of Derivative Financial Instruments and Classification In Consolidated Balance Sheets Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Additional capital contribution Payments to Acquire Interest in Joint Venture Secured Debt, Total Carrying Value Secured Debt Dividend rate percentage of increase on preferred stock Dividend Rate Percentage Increase Per Annum Dividend rate percentage increase per annum. Asheville four. Asheville Four [Member] Asheville IV CAD Foreign currency translation adjustment Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax Other comprehensive income loss foreign currency translation adjustment net of tax. Real estate facilities: Real Estate Investment Property, Net [Abstract] Fixed annual rate Interest rate Debt Instrument, Interest Rate, Effective Percentage Managed REITs Managed REITS Managed R E I T S [Member] Managed REITs. Entity Address, Address Line One Entity Address, Address Line One Total deferred tax liability Total deferred tax liability Gross deferred tax liability Deferred Tax Liabilities, Gross Proceeds from Insurance Settlement, Investing Activities Insurance proceeds on insured property damage Fair Value Hierarchy and NAV [Axis] Earnings Per Share [Abstract] Income Taxes Income Tax, Policy [Policy Text Block] Derivative, Termination Date Derivative, termination date. Derivative termination date Temporary Equity, Carrying Amount, Attributable to Parent Redeemable common stock / Preferred stock Supplemental disclosures and non-cash transactions: Supplemental Cash Flow Information [Abstract] Foreign Currency Translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Property, Plant and Equipment, Depreciation Method [Extensible Enumeration] Strategic Storage Growth Trust II Property Management Agreement Strategic Storage Growth Trust I I Property Management Agreement [Member] Strategic Storage Growth Trust II Property Management Agreement. Name of Property Name of Property [Axis] Impact of foreign exchange rate changes Real Estate Facilities Foreign Exchange Gain Loss Impact Real estate facilities foreign exchange gain loss impact. Payments for Derivative Instrument, Investing Activities Balance Sheet Location Statement of Financial Position Location, Balance [Axis] Investment Type Investment Type [Axis] Strategic Storage Trust V I Advisory Agreement [Member] Strategic Storage Trust VI Advisory Agreement. Strategic Storage Trust V I Advisory Agreement Regent, Ontario [Member] Regent, Ontario Member. Regent Ontario Louetta Rd Houston [Member] Louetta Rd Houston. Louetta Rd, Houston Total deferred tax assets Gross deferred tax asset Deferred Tax Assets, Gross Net Income (Loss) Attributable to Noncontrolling Interest, Total Net Income (Loss) Attributable to Noncontrolling Interest Net income (loss) attributable to noncontrolling interests Net loss attributable to noncontrolling interests Net loss attributable to noncontrolling interests Net (income) loss attributable to noncontrolling interests Number of Employees and Directors Number of employees and directors. Number of employees and directors Debt Instrument, Redemption, Period Debt Instrument, Redemption, Period [Axis] Markham, Ontario [Member] Markham, Ontario member. Markham Ontario Land Land Document Type Document Type Accretion of financing fee revenues Accretion Of Financing Fee Revenues Accretion of financing fee revenues. Gross Profit Segment operating income Segment operating income Interests Subsidiary, Ownership Percentage, Parent Percentage of limited partnership interests Entity Central Index Key Entity Central Index Key Depreciation expense SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Depreciation Expense Number of shares issuable upon conversion of partnership units Number Of Shares Issuable Upon Conversion Of Partnership Units Number of shares issuable upon conversion of partnership units. Gains (losses) on exchange rate changes in equity investments recorded in other income (expense) Realized Gain (Loss), Foreign Currency Transaction, before Tax 2032 Private Placement Notes Two Thousand Thirty Two Private Placement [Member] Two thousand thirty two private placement. SmartCentres Joint Ventures [Member] SmartCentres joint ventures. SmartCentres Joint Ventures Change in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation CAD Forward August 27, 2025 Cad Forward Matured August Twenty Seven Two Thousand Twenty Five [Member] Cad forward matured august twenty seven two thousand twenty five. Subsequent Event Type Subsequent Event Type [Domain] Number of self storage real estate joint ventures Number Of Self Storage Real Estate Joint Ventures Number of self storage real estate joint ventures. Interest income Interest Income, Operating, Total Interest Income, Operating Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Equivalent Shares, excluded from computation of earnings per share as effect of antidilutive 2027 Ladera Ranch Loan Two Thousand Twenty Seven Ladera Ranch Loan [Member] Two thousand twenty seven ladera ranch loan. Oakville III BMO Loan Oakville I I I B M O Loan [Member] Oakville III BMO Loan. Equity based compensation expense APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition Temporary Equity, Carrying Amount, Period Increase (Decrease), Total Changes to redeemable common stock Temporary Equity, Carrying Amount, Period Increase (Decrease) SOFR Cap December 2, 2024 Secured Overnight Financing Rate Sofr Overnight Index Matured December Two TwoThousand Twenty Four [Member] Secured overnight financing rate sofr overnight index matured december two two thousand twenty four Common Stock, par value Common Stock, Par or Stated Value Per Share Non Cash Adjustment From Equity Method Investments In Joint Venture Properties Non cash adjustment from equity method investments in JV Properties. Non-cash adjustment from equity method investments in JV Properties USD United States of America, Dollars Debt instrument yield percentage Debt Instrument Yield Percentage Debt instrument yield percentage. Related party costs, Incurred Operating Costs and Expenses Operating Costs and Expenses, Total Number of Preferred Unit Purchased Number of preferred unit purchased. Number of preferred units purchased Organization And Nature Of Operations [Line Items] Organization And Nature Of Operations [Line Items] Organization and nature of operations. Real estate facilities, beginning balance Real estate facilities, ending balance Real Estate Investment Property At Cost Excluding Construction In Progress Real estate investment property at cost excluding construction in progress. Increased amount Line Of Credit Facility Increased Amount Based On Conditions Line of credit facility increased amount based on conditions. Administrative Fees Expense Administrative service fees Par value adjustment due to Reverse Stock Split Stock Issued During Period Value Reverse Stock Splits Stock issued during period value reverse stock splits. Foreign Currency Forward, Effective Date or Date Assumed Effective Date Of Foreign Currency Derivatives Effective date of foreign currency derivatives. Offering Price Offering price Offering price JV Properties Corporate and Other Corporate Segment and Other Operating Segment [Member] SST VI Series C Units SST VI Series C Units [Member] Sst VI series c units. Total SmartStop Self Storage REIT, Inc. Equity Parent [Member] Debt Instruments [Abstract] Asheville three. Asheville Three [Member] Asheville III Debt Disclosure [Abstract] Gain (Loss) Reclassified from OCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Initial public offering commenced period description Initial Offering Period Interest Rate Swaps, Strike Derivative Strike Rate Derivative strike rate. Interest rate swaps, strike Canada Revenue Agency [Member] Canada Revenue Agency Member Derivative [Table] Derivative [Table] Income Tax [Line Items] Line items represent income taxes. Postemployment Benefit Plans, Policy [Policy Text Block] Employee Benefit Plan State income tax expense (benefit) State and Local Income Tax Expense (Benefit), Continuing Operations Brampton, Ontario Brampton Ontario [Member] Brampton, Ontario. Summary of Derivative Financial Instruments Schedule of Derivative Instruments [Table Text Block] Asset Management Asset Management [Member] Strategic Storage Growth Trust II Tenant Program Revenue Strategic Storage Growth Trust I I Tenant Program Revenue [Member] Strategic Storage Growth Trust II Tenant Program Revenue Member. Distribution Reinvestment Plan Distribution Reinvestment Plan [Member] Distribution reinvestment plan. Foreign Currency Forward, Notional Amount Foreign Currency Derivatives Notional Amount Foreign currency derivatives notional amount. Real estate facilities SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] Derivative, notional amount Derivative, Notional Amount Interest rate cap, amount Derivative, Notional Amount KeyBank Property Loan Key Bank Property Loan [Member] KeyBank Property Loan. Stock Issued During Period, Value, Restricted Stock Award, Gross Issuance of restricted stock, net of forfeitures Issuance of restricted stock, net of forfeitures Investments In Unconsolidated Real Estate Ventures [Table] Investments In Unconsolidated Real Estate Ventures [Table] Investments in Unconsolidated Real Estate Ventures tabe Ownership Ownership [Domain] Current Fiscal Year End Date Current Fiscal Year End Date Common Class Y and Z shares. Common Class Y and Z shares [Member] Common Class Y and Z shares Debt Instrument [Table] Schedule of Long-Term Debt Instruments [Table] Redemptions of noncontrolling interests in our OP Payments to Noncontrolling Interests Redemptions of noncontrolling interests in our OP Earnest Money Deposits Forfeit earnest money Number of properties acquired Business Combination, Number of Businesses Acquired Performance Based Awards Performance Based Awards [Member] Performance based awards. Total investments in and advances Investments in and advances to Managed REITs Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Percentage of Redemption Fee Percentage of redemption fee. Percentage of redemption fee Document Quarterly Report Document Quarterly Report Other Cost and Expense, Operating Total other operating expenses California CALIFORNIA Advertising Cost [Policy Text Block] Advertising Costs Fair Value By Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Entity Address, State or Province Entity Address, State or Province Unvested Shares, Beginning balance Unvested Shares, Ending Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Number of development real estate properties. Number Of Development Real Estate Properties Number of parcels of land being developed into self storage facilities Number of development real estate properties Line of Credit Facility, Remaining Borrowing Capacity Principal borrowing amount, currently available SAM and Affiliates S A M And Affiliates [Member] SAM and affiliates. Investment, Name [Domain] Summary of Purchase Price Allocation for Acquisitions Business Combination [Table Text Block] Asset Acquisition [Domain] Preferred Stock, Shares Outstanding, Ending Balance Preferred Stock, Shares Outstanding, Beginning Balance Preferred shares outstanding Preferred Stock, Shares Outstanding Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income (loss) attributable to SmartStop Self Storage REIT, Inc. stockholders Orlando Florida [Member] Orlando Florida. Orlando Florida Number of self storage units Number Of Self Storage Units Number of self storage units. Geographical Geographical [Axis] Line of Credit Facility, Lender Line of Credit Facility, Lender [Domain] Payments Represents Full Settlement Payments represents full settlement. Payments represents full settlement Secured debt ratio Secured Debt Ratio Secured debt ratio. Preferred stock redemption premium Preferred Stock Redemption Premium Stockholders' Equity Attributable to Noncontrolling Interest, Ending Balance Stockholders' Equity Attributable to Noncontrolling Interest, Beginning Balance Total noncontrolling interests Equity, Attributable to Noncontrolling Interest Strategic Storage Growth Trust III Acquisition Fees Revenue[Member] Strategic Storage Growth Trust III Acquisition Fees Revenue[Member] Strategic Storage Growth Trust III Acquisition Fees Revenue Investment Fee Investment fee. Investment fees Administrative Services Agreement Administrative Services Agreement [Member] Administrative Services Agreement. Net income (loss) attributable to the non controlling interests in our operating partnership. Net Income Loss Attributable to the Non Controlling Interests in Our Operating Partnership Net income (loss) attributable to the noncontrolling interests in our Operating Partnership Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Discount on secured debt, net Debt Instrument, Unamortized Discount (Premium), Net Debt Instrument, Unamortized Discount (Premium), Net, Total Share based compensation arrangement by share based payment award voting rights Share Based Compensation Arrangement By Share Based Payment Award Voting Rights Share based compensation arrangement by share based payment award voting rights. Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income (loss): Deferred Income Tax Assets, Net Deferred tax assets Occupancy Upon Acquisition Business Acquisition Occupancy Percentage Business Acquisition Occupancy Percentage Subsequent Event Subsequent Event [Member] Subsequent Event [Member] Redemption of Series A Convertible Preferred Stock Payments for Repurchase of Redeemable Convertible Preferred Stock Redemption of Series A Convertible Preferred Stock Base Rate Loans. Base Rate Loans [Member] Base Rate Loans Accordion Feature Accordion Feature [Member] Accordion feature. Antidilutive Securities [Axis] Termination date Termination Date Termination date. Vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Interest Expense, Debt Interest Expense, Debt, Total Debt Expense Loss contingency other non-cancellable future payment due year two Loss Contingency Other Non-Cancellable Future Payments Due in Year Two Loss contingency other non-cancellable future payments due in year two. Debt Instrument, Unamortized Discount, Total Debt Instrument, Unamortized Discount Discount on secured debt Related Party Transaction Related Party Transaction [Axis] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Finite-Lived Intangible Assets, Major Class Name Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Asset, Expected Amortization, after Year Five Total estimated future amortization expense of intangible assets, thereafter JV Properties Tenant Protection Program Revenue JV Properties Tenant Protection Program Revenue [Member] JV properties tenant protection program revenue member. Summary of Related Party Fees and Reimbursable Costs Schedule Of Related Party Fees And Reimbursable Costs Table [Text Block] Schedule of related party fees and reimbursable costs. Entity Number of Employees No of employees Purchase price Total consideration transferred Business Combination, Consideration Transferred Consideration transferred Edmonton Alberta [Member] Edmonton, Alberta. Edmonton, Alberta Real Estate Disclosure [Text Block] Real Estate Intangibles Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived Class A and T Common Stock [Member] Class A and T Common Stock [Member] Class A and T Common Stock Payment for Debt Extinguishment or Debt Prepayment Cost Debt defeasance costs Asset Acquisition, Consideration Transferred, Contingent Consideration Potential earnout based on revenues Senior notes maturity date Debt instrument, maturity date Debt Instrument, Maturity Date Monthly asset management fee Advisory Agreement Asset Management Fee Percentage Advisory Agreement Asset Management Fee Percentage Minimum Minimum [Member] Unvested Weighted-Average Grant-Date Fair Value, Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Financial Instrument [Axis] Derivative Asset, Fair Value, Gross Asset, Total Derivative fair value, assets Derivative Asset, Subject to Master Netting Arrangement, before Offset Two thousand and twenty seven NBC loan. Two Thousand and Twenty Seven NBC Loan [Member] 2027 NBC Loan Number of trademarks acquired Number Of Trademarks Acquired Number of trademarks acquired. Summary of Investments in Unconsolidated Real Estate Ventures Equity Method Investments [Table Text Block] Selected Quarterly Data Quarterly Financial Information [Text Block] Amortization of Intangible Assets, Total Intangible amortization expense Amortization of Intangible Assets Unsecured interest coverage ratio Unsecured Interest Coverage Ratio Unsecured interest coverage ratio. Redemption Of Common Stock Redemption of common stock. Redemption of common stock Fair Value, Inputs, Level 3 [Member] Significant unobservable Inputs (Level 3) Series A Cumulative Preferred Stock Series A Convertible Preferred Stock Series A Convertible Preferred Stock [Member] Series A convertible preferred stock. Segment Reporting [Abstract] Total assets acquired Total assets acquired Business Combination, Recognized Asset Acquired, Asset Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Assets and Liabilities Measured at Fair Value Tax Period [Domain] Construction in process Development in Process SST VI [Member] SST VI [Member] SST VI Preferred stock payment description Preferred Stock, Dividend Payment Terms Related Party Transactions [Abstract] Property Operating Expenses Property Operating Expenses [Member] Property operating expenses. Initial Investment Initial investment. Initial investment Beginning Balance (in shares) Ending Balance (in shares) Shares, Outstanding Hedge Cash Settlement Matures on May Twenty Seven Two Thousand Twenty Six [Member] Hedge cash settlement matures on may twenty seven two thousand twenty six [Member] Debt issuance cost, gross Debt Issuance Cost, Gross, Noncurrent Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities [Member] Total debt Debt, net Debt and Lease Obligation Commitments and contingencies (Note 12) Commitments and Contingencies Canadian Entities Canadian Entities [Member] Canadian entities. Unvested Weighted-Average Grant-Date Fair Value, Beginning balance Unvested Weighted-Average Grant-Date Fair Value, Ending balance Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Tenant Protection Program Tenant Protection Program [Member] Tenant protection program member. General and Administrative Expense General and Administrative Expense [Member] JV Properties Property Management Agreement JV Properties Property Management Agreement [Member] JV properties property management agreement member. Debt Instrument, Basis Spread on Variable Rate Spread on Variable Rate Debt instrument, variable interest rate Preferred stock, dividend rate, percentage Preferred Stock, Dividend Rate, Percentage Forecast Forecast [Member] Proceeds from Issuance of Unsecured Debt Gross proceeds from issuance of Canadian Notes Winter Garden Property [Member] Winter garden property. Winter Garden Property Segment Reporting Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Site improvements Land Improvements Consideration in units Asset Acquisition Consideration Transferred Transaction Units Asset acquisition consideration transferred transaction units. Concentration Risk Benchmark Concentration Risk Benchmark [Axis] Long-Term Debt, Maturity, Year Two 2026 Variable Interest Entity, Primary Beneficiary [Member] Pacific Oak Holding Group Derivative, Cash Received on Hedge Termination amount for canadian Notes issuance Operating Expense [Member] Operating Expense Line of credit facility, term of extension options Line Of Credit Facility Extension Period Line of credit facility extension period. Real Estate Facilities Foreign Exchange Gain Loss Impact and Other Real Estate Facilities Foreign Exchange Gain Loss Impact and Other Impact of foreign exchange rate changes and other SST VI Note. SST VI Note [Member] SST VI Note Related party transaction percentage of sales price of asset on disposition. Related Party Transaction Percentage of Sales Price of Asset on Disposition Rate of disposition fee of contract sales price Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) Net income (loss) Net loss Receivables Investments In And Advances To Affiliates Investments in and advances to affiliates. SmartCentres Storage Finance LP Smart Centres Storage Finance L P [Member] SmartCentres Storage Finance LP. Maturity Date Range, Start Debt Instrument, Maturity Date Range, Start Fractional Share Redemption Fractional share redemption. Fractional share redemption (in shares) Summary of Total Assets by Segment Reconciliation of Assets from Segment to Consolidated [Table Text Block] Real Estate Facilities Real Estate, Policy [Policy Text Block] Reimbursement days after termination Reimbursement Days After Termination Reimbursement days after termination. Long-term Debt, Type Long-Term Debt, Type [Domain] Deposit, Derivative Deposits of units Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic, Total Weighted average number of shares outstanding- basic Weighted average number of common shares outstanding- basic Strategic Transfer Agent Services, LLC Strategic Transfer Agent Services Llc [Member] Strategic Transfer Agent Services, LLC . Shenandoah Houston [Member] Shenandoah, Houston Shenandoah, Houston Scenario Scenario [Axis] Share Redemption Program Share Redemption Program [Member] Share redemption program. Term loan Term Loan Term loan Term loan Document Information [Line Items] Document Information [Line Items] Foreign Currency Hedges Foreign Currency Hedges [Member] Foreign currency hedges. Common Stock Dividends Per Share Declared Annualized Common stock dividends per share declared annualized. Dividends per share declared annualized Segment Reporting, Expense Information Used by CODM, Description Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Segments Segments [Axis] Long-Lived Tangible Asset Long-Lived Tangible Asset [Domain] Reimbursable Costs from Managed REITs Reimbursable Costs From Managed R E I Ts [Member] Reimbursable costs from managed REITs. Accumulated amortization of debt issuance costs Accumulated Amortization Of Debt Issuance Costs Accumulated amortization of debt issuance costs. Advisor, SS Toronto REIT Advisors, Inc., and SS Growth Advisor, LLC. Advisor S S Toronto R E I T Advisors Inc And S S Growth Advisor L L C [Member] Advisor, SS Toronto REIT Advisors, Inc.,And SS Growth Advisor, LLC. Investment In Storage Facilities Policy [Text Block] Investment In Storage Facilities [Policy Text Block] Real Estate Purchase Price Allocation and Treatment of Acquisition Costs Ladera Office Loan Ladera Office Loan [Member] Ladera office loan. Subsequent Events Subsequent Events [Text Block] Asset Acquisition, Consideration Transferred, Transaction Cost Consideration in cash Asset acquisition-related transaction costs Related Party Transactions Related Party Transactions Disclosure [Text Block] Redeemable Common Stock Redeemable Common Stock Policy Policy [Text Block] Redeemable Common Stock Policy [Policy Text Block] 4.53% Senior Notes. Four Point Five Three Percentage Senior Notes[Member] 4.53% Senior Notes[Member] Variable interest entity nonvoting ownership percentage Variable Interest Entity Nonvoting Ownership Percentage Variable interest entity non-voting ownership percentage Variable Rate Variable Rate [Domain] Percentage of established target performance criteria Percentage Of Established Target Performance Criteria Percentage of established target performance criteria. Derivative Lock Rate Derivative lock rate Derivative lock rate Stockholders' Equity Attributable to Parent, Ending Balance Stockholders' Equity Attributable to Parent, Beginning Balance Total SmartStop Self Storage REIT, Inc. equity Equity, Attributable to Parent Dividends [Abstract] Preferred Stock, Par or Stated Value Per Share Preferred stock, authorized, par value Kelowna Canadian Property Loan [Member] Kelowna canadian property loan member. Kelowna Canadian Property Loan Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Statement of Stockholders' Equity [Abstract] Real Estate Tax Expense Property taxes Real estate facilities, net Real Estate Investments, Net Investments Related party costs, Settled Related Party Transaction Cash Settled Related party transaction cash settled. Carrying Value of Investment Equity Method Investments Debt issuance costs, net of accumulated amortization Debt Issuance Costs Net Of Accumulated Amortization Debt issuance costs net of accumulated amortization. Denominated in CAD April 12, 2024 Denominated In Cad Matured April Twelve Two Thousand Twenty Four [Member] Denominated in cad matured april twelve two thousand twenty four member Series A Preferred Stock [Member] Series A Preferred Units Use of Estimates Use of Estimates, Policy [Policy Text Block] Payments to Acquire Real Estate, Total Payments to Acquire Real Estate Purchase of real estate Murfreesboro, Tennessee [Member] Murfreesboro, Tennessee. Murfreesboro Murfreesboro, Tennessee Schedule of Un-Vested Share Activity Schedule of Nonvested Share Activity [Table Text Block] 2029 Long-Term Debt, Maturity, Year Five Debt Instrument Monthly Payment Amortization Period Debt instrument monthly payment amortization period. Amortization period Dupont and Aurora Joint Venture Properties [Member] Dupont and Aurora joint venture properties. Dupont And Aurora Joint Venture Properties Over-Allotment Option [Member] Over-Allotment Option [Member] Real estate accumulated depreciation casualty loss. Real Estate Accumulated Depreciation Casualty Loss Casualty loss Sale of property price Proceeds from Previous Acquisition SSGT II Unit Purchase Agreement S S G T I I Unit Purchase Agreement [Member] SSGT II unit purchase agreement. Earliest Tax Year [Member] Noncontrolling Interests Noncontrolling Interest [Member] Change in deferred tax assets and liabilities Change In Deferred Tax Assets And Liabilities Change in deferred tax assets and liabilities. Date of formation of company Entity Incorporation, Date of Incorporation Debt Instrument Face Amount Initially Drawn Debt instrument face amount initially drawn. Initially drawn amount Debt Instrument, Name Debt Instrument, Name [Domain] SST IV CMBS Loan S S T I V C M B S Loan [Member] Sst IV cmbs loan. Distributions Per Share Distributions Per Share Distributions Per Share Income (Loss) from Equity Method Investments Income (Loss) from Equity Method Investments, Total Equity in earnings (loss) of unconsolidated real estate ventures Equity in loss of unconsolidated entities Equity in earnings (loss) of unconsolidated real estate ventures Long-Term Debt, Maturity, Year Four 2028 Acquisition Date Business Combination, Effective Date of Acquisition Sponsorship funding payments balance. Sponsorship Funding Payments Balance Balance at Beginning Balance at Ending Derivative Instruments and Hedging Activities Disclosure [Abstract] Monthly asset management fee one twelfth of less than one percentage of average invested assets Monthly Assets Management Fees One Twelfth Of Less Than One Percentage Of Assets Value Exceed Specific Value Monthly assets management fees one twelfth of less than one percentage of assets value exceed specific value. Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] After Fifth Anniversary Preferred Stock Redemption Period Thereafter [Member] Preferred stock redemption period thereafter. Plan Name Plan Name [Domain] Two thousand twenty eight canadian term loan. Two Thousand Twenty Eight Canadian Term Loan [Member] 2028 Canadian Term Loan Increase (Decrease) in Other Operating Assets, Total Other assets, net Increase (Decrease) in Other Operating Assets Cochrane Alberta [Member] Cochrane, Alberta Cochrane, Alberta Interest Expense, Operating and Nonoperating Interest expense Interest Expense, Total Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] The cash outflow for acquisition of or real estate improvements held for investment (operating, managed, leased) or for use. Payments For Real Estate Additions Additions to real estate Buildings Building [Member] Stoney Creek Loan Stoney Creek Loan [Member] Stoney Creek loan. Credit Facility Credit Facility [Axis] Equity method investment, ownership percentage Equity Method Investment, Ownership Percentage Interest entity non-voting ownership percentage Operating expenses Cost of Product and Service Sold Property taxes Operating expenses Impairment, Long-Lived Asset, Held-for-Use, Total Impairment losses of real property assets recognized Impairment, Long-Lived Asset, Held-for-Use Preferred Stock Purchase Consideration Preferred stock purchase consideration. Preferred stock purchase consideration Current State income tax expense (benefit) Current State and Local Tax Expense (Benefit) Reverse Equity Splits Reverse Equity Splits Policy [Policy Text Block] Disclosure of reverse equity splits. Tax Period [Axis] Derivative expense after termination Derivative Expense After Termination Derivative expense after termination. Cad Forward Matured April Eleven Two Thousand Twenty Five [Member] Cad forward matured april eleven two thousand twenty five. CAD Forward April 11, 2025 Restricted Stock, Shares Issued Net of Shares for Tax Withholdings Tax withholding (net settlement) related to vesting of restricted stock, (in Shares) Tax withholding (net settlement redemption) related to vesting of restricted stock, (in Shares) Related Party Related and Nonrelated Parties [Axis] CAD Forward Matured February Twenty Six Two Thousand Twenty Six [Member] Cad forward matured february twenty six two thousand twenty six. CAD Forward February 26, 2026 Entity Address, City or Town Entity Address, City or Town Managed REIT Platform Managed R E I T Platform [Member] Managed REIT Platform. Redeemable Common Stock Redeemable Common Stock [Member] Redeemable common stock. Number of reportable business segments Number of Reportable Segments Amount of Receivable Sale of Stock Amount of receivable sale of stock. Percentage of joint venture property owned Percentage Of Joint Venture Property Owned Percentage of joint venture property owned Security Exchange Name Kelowna Property Loan [Member] Kelowna property loan. Kelowna Property Loan Credit Facility Credit Facility [Domain] Minimum percentage of ordinary taxable income to be distributed to stockholders Minimum Percentage Of Ordinary Taxable Income To Be Distributed To Stockholders Minimum Percentage Of Ordinary Taxable Income To Be Distributed To Stockholders Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] RBC JV Term Loan II RBC JV Term Loan II [Member] RBC JV Term loan II. Total payments Debt Instrument Carrying Amount Long-Term Debt, Gross Aggregate borrowings IncreaseDecreaseInManagedRealEstateInvestmentTrustsReceivablesAndOther Increase decrease in managed real estate investment trusts receivables and other. Managed REITs receivables and other Lakewood Colorado [Member] Lakewood Colorado. Lakewood, Colorado Lakewood II Weighted average interest rate on debt Debt, Weighted Average Interest Rate Preferred stock, investors rights agreement Preferred Stock, Participation Rights Canadian CitiBank Loan Candian Citi Bank Loan [Member] Candian CitiBank Loan. Hillside New Jersey [Member] Hillside New Jersey [Member] Hillside Hillside, New Jersey Concentration Risk Type Concentration Risk Type [Domain] Debt instrument, description of variable rate basis, extended. Debt Instrument, Description of Variable Rate Basis, Extended Debt instrument, description of variable rate basis, extended Initial Investment in Shares Initial investment in shares. Initial investment number of shares Proceeds from Equity Method Investment, Distribution, Return of Capital Capital distributions from unconsolidated JV Properties Real Estate [Abstract] Antidilutive Securities, Name [Domain] Investment Owned, Cost Investment on operating partnership Gain (Loss) Recognized in OCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Executive Officers Executive Officer [Member] Percentage of offering cost without reimbursement Percentage Redemption Price Redemption price (Percentage of redemption amount). Oakville III Property Oakville I I I Property [Member] Oakville III Property. Cash paid for interest, net of capitalized interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statistical Measurement Statistical Measurement [Domain] SSGT III Mezzanine Loan SSGT III Mezzanine Loan[Member] SSGT III Mezzanine Loan[Member] Health Care Organization, Revenue Sources [Axis] Repurchase of Noncontrolling Interest in our Operating Partnership Repurchase of noncontrolling interest in our operating partnership. Repurchase of noncontrolling interest in our Operating Partnership Share based compensation expense Share-Based Payment Arrangement, Expense Stock compensation expense SSGT II Merger S S G T I I Merger [Member] S S G T I I Merger [Member] Strategic Storage Trust VI Acquisition Fees Revenue Strategic Storage Trust VI Acquisition Fees Revenue [Member] Strategic storage trust VI acquisition fees revenue member. Derivative payments after termination Derivative Payments After Termination Derivative payments after termination. Class a and Class a-1 op units. Class A and Class A-1 OP Units [Member] Class A and Class A-1 OP Units Document Period End Date Document Period End Date Class A and Class T Common Stock Common Class A And Class T [Member] Common class A and class T. Common Class A And Class T [Member] Equity Method Investments and Joint Ventures [Abstract] SST IV Merger S S T I V Merger [Member] SST IV merger. Title of Individual Title and Position [Axis] Fair Value Hierarchy and NAV [Domain] Two Thousand Twenty Five Key Bank Acquisition Facility [Member] Two thousand twenty five key bank acquisition facility. 2025 KeyBank Acquisition Facility Red Deer, Alberta Red Deer Alberta [Member] Red Deer, Alberta. Former Credit Facility Revolver [Member] Former credit facility revolver. Former Credit Facility Revolver Line of Credit Facility, Commitment Fee Percentage Debt instrument, fee percentage Redemptions of common stock, value Stock Redeemed or Called During Period, Value Redemptions of stock Capital distributions from managed real estate investment trusts. Capital Distributions From Managed Real Estate Investment Trusts Capital distributions from Managed REITs Total net rentable Net Rentable Area Net rentable area, primarily self storage space Property Management Fee Revenue One time fee for former external property managers Cost of Property Repairs and Maintenance Repairs & maintenance Weighted-average amortization period on remaining intangible assets Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Debt instrument, description of variable rate basis Debt Instrument, Description of Variable Rate Basis Statement of Financial Position [Abstract] Antidilutive Security, Excluded EPS Calculation [Table] Redemption amount threshold period Redemption Amount Threshold Period Redemption amount threshold period. Class of Stock Class of Stock [Axis] Net deferred tax liabilities Net deferred tax liabilities Canadian real estate Deferred Tax Liabilities, Net Other Assets, Fair Value Disclosure Other assets Argus Professional Storage Management LLC [Member] Argus professional storage management llc. Argus Professional Storage Management, LLC Operating Partnership to Total Return Operating partnership to total return. Operating partnership to total return Borrowing capacity Debt Instrument, Unused Borrowing Capacity, Amount Current income tax expense (benefit) Current income tax expense Current Income Tax Expense (Benefit), Total Current Income Tax Expense (Benefit) Termination Of Distribution Support Agreement Termination of distribution support agreement Termination of the distribution support agreement Houston Texas [Member] Houston Texas. Houston, Texas Series D Cumulative Redeemable Preferred Unit Series D Cumulative Redeemable Preferred Unit [Member] Series D cumulative redeemable preferred unit member. Series D Preferred Units Finite lived intangible assets amortization expense after year four. Finite Lived Intangible Assets Amortization Expense After Year Four Total estimated future amortization expense of intangible assets, thereafter Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Total liabilities Liabilities Financial Instruments [Domain] Fifth To Tenth Anniversary Preferred Stock Redemption Period Five To Ten [Member] Preferred stock redemption period five to ten. SSGT III Bridge Loan SSGT III Bridge Loan [Member] SSGT III bridge loan. Canadian income tax expense (benefit) Foreign Income Tax Expense (Benefit), Continuing Operations Equity Investments Equity Method Investments [Policy Text Block] Foreign Currency Forward, Maturity Date Maturity of Foreign Currency Derivatives Foreign currency forward, maturity date All Currencies All Currencies [Domain] Restricted Cash, Total Restricted cash Restricted Cash Advertising Expense Advertising costs Advertising Restricted Stock [Member] Unvested restricted stock awards Restricted Stock Foreign Currency Forward Foreign Exchange Forward [Member] Foreign Exchange Forwards Variable Rate Variable Rate [Axis] Finite-Lived Intangible Assets, Gross, Total Gross amounts of lease intangibles Finite-Lived Intangible Assets, Gross Hedge Cash Settlement Matures on February Twenty Seven Two Thousand Twenty Six Hedge Cash Settlement Matures on February Twenty Seven Two Thousand Twenty Six [Member] Hedge cash settlement matures on february twenty seven two thousand twenty six. Average number of common shares outstanding- diluted Weighted Average Number of Shares Outstanding, Diluted Weighted average number of shares outstanding - diluted Weighted average number of common shares outstanding - diluted Entity File Number Securities Act File Number Distributions paid to common stockholders Payments of Ordinary Dividends, Common Stock Related party future maximum funding obligation Related Party Future Maximum Funding Obligation Related party future maximum funding obligation. Other Assets, Total Other assets, net Other Assets Derivative Instruments, Gain (Loss) [Table Text Block] Summary of Effect of Derivative Financial Instruments on Consolidated Statements of Operations Cover [Abstract] Commitments And Contingencies [Table] Commitments And Contingencies [Table] Commitments and Contingencies [Table] SOFR Cap December 2, 2024 Secured Overnight Financing Rate Sofr Overnight Index Matured December Two TwoThousand Twenty Four One [Member] Secured overnight financing rate sofr overnight index matured december two two thousand twenty four one member Summary of Fixed Rate Notes Payable Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Unrealized foreign currency and derivative (gains) losses Unrealized Gain Loss On Foreign Currency And Derivatives Unrealized gain (loss) on foreign currency and derivatives. Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities SSGT III OP Units and SSGT III SLP SSGT III OP Units and SSGT III SLP [Member] SSGT III OP Units and SSGT III SLP. Derivative Instruments Prior Month's Settlement Derivative instruments prior month's settlement. Derivative instruments prior months settlement. Unvested Shares, Forfeited Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Investments Investments [Domain] Noncontrolling Interest, Increase from Sale of Parent Equity Interest Issuance of noncontrolling interest in SST VI Advisor Minority investment additional funding Acquisition of Real Estate with Loans Payable Acquisition of real estate with loans payable Acquisition of real estate with loans payable. Derivative Instruments And Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Scenario Scenario [Domain] Acquisition expenses Acquisition Expenses Acquisition expenses. Sale of Stock Sale of Stock [Domain] Professional and Contract Services Expense Administrative and professional Segment Disclosures Segment Reporting Disclosure [Text Block] Fractional Share Redemption Amount Fractional share rdemption amount. Fractional share redemption Construction Management Fee Minimum Threshold Value Of Capital Improvement Work Construction management fee minimum threshold value of capital improvement work. Cost of construction or capital improvement work General and Administrative Expense General and Administrative Expense, Total General and administrative Forward Contract Indexed to Issuer's Equity, Type [Axis] Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Conversion price per share Preferred Stock, Convertible, Conversion Price Preferred Stock, liquidation preference, value Temporary Equity, Liquidation Preference Senior Notes Due On April Nineteen Two Thousand Thirty Two [Member] Senior Notes due on april nineteen, two thousand thirty two. Senior Notes due april 19 2032 Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Gain (loss) on foreign currency hedge contract, ineffective portion Subsequent Event [Table] Investment Income, Dividend Investment income Deferred Tax Assets, Other Other Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table] Credit facility agreement Credit Facility Agreement [Member] Credit facility agreement. Short-term Debt, Type Short-Term Debt, Type [Domain] Finite-Lived Intangible Assets, Net, Ending Balance Finite-Lived Intangible Assets, Net, Beginning Balance Finite-Lived Intangible Assets, Net, Total Intangible assets, net of accumulated amortization Finite-Lived Intangible Assets, Net Initial maximum amount available Line of Credit Facility, Interest Rate During Period East York, Ontario East York Ontario [Member] East York, Ontario. Number of Real Estate Properties Number of properties severely flooded Number Of Real Estate Properties SST VI Advisory Agreement S S T V I Advisory Agreement [Member] SST VI advisory agreement. Gain (Loss) on Extinguishment of Debt, Total Gain (Loss) on Extinguishment of Debt Loss on debt extinguishment Loss on extinguishment of debt Expense included in debt extinguishment Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent1 Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent1 Interest rate hedge contract gain (loss) Interest rate swap and cap contract gains (losses) Standard Depreciable Life Property, Plant and Equipment, Useful Life Short-term Debt, Type Short-Term Debt, Type [Axis] New Accounting Pronouncements, Policy [Policy Text Block] Recently Issued Accounting Guidance Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Payment for Purchase, Investment, Operating Activity Investment in the operating partnership Regent Property1. Regent Property1 [Member] Regent Property Ownership Ownership [Axis] Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Commitment fee percentage Commitment fee percentage Other Comprehensive Income Foreign Currency Hedge Contract Gains Losses Net Of Tax Other comprehensive income foreign currency hedge contract gains losses net of tax. Foreign currency hedge contract (losses) gains Foreign currency hedge contract gain (loss) Depreciation, Total Depreciation Depreciation Proceeds from Issuance of Long-Term Debt, Total Proceeds from Issuance of Long-Term Debt Net proceeds from loan Investment, Type [Extensible Enumeration] Investment, Type [Extensible Enumeration] Net proceeds of repayment Proceeds from (Repayments of) Debt Proceeds from (Repayments of) Debt, Total Unrecognized compensation expense related to non-vested equity awards Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Common Stock, Shares, Outstanding, Ending Balance Common Stock, Shares, Outstanding, Beginning Balance Common Stock, shares outstanding Common Stock, Shares, Outstanding Property Management Agreement Property Management Agreement [Member] Property Management Agreement. Self Storage Self Storage [Member] Self Storage. KeyBank CMBS Loan Keybank Cmbs Loan [Member] KeyBank CMBS Loan. Dividends [Domain] Document Transition Report Document Transition Report Description of distribution and allocation of profits and losses Share Based Compensation Arrangement By Share Based Payment Award Description Of Distribution And Allocation Of Profits And Losses Share based compensation arrangement by share based payment award description of distribution and allocation of profits and losses. LeverageRatio LeverageRatio Leverage Ratio Construction management fee Construction Management Fee Percent On Cost Above Specific Limit Construction Management Fee Percent on Cost Above Specific Limit Required Ancillary Business Revenue To Total Revenue Required ancillary business revenue to total revenue. Required ancillary business revenue to total revenue Summary of the Company's Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income (loss) Statement of Cash Flows [Abstract] SSGT III Promissory Note II [Member] SSGT III promissory note II member. SSGT III Promissory Note II SSGT I I I Promissory Note [Member] SSGT III Promissory Note. SSGT III Promissory Note Current Federal income tax expense (benefit) Current Federal Tax Expense (Benefit) Stock Issued During Period, Value, New Issues Issuance of shares in Underwritten Public Offering , Value Aggregate liquidation preference Preferred Stock, Liquidation Preference, Value Reconciliation Of Assets From Segment To Consolidated [Table] Reconciliation of Assets from Segment to Consolidated [Table] Interest Rate Swap Interest Rate Swap [Member] Interest Rate Swaps FM Two Nine Seven Eight Houston [Member] FM 2978, Houston. FM 2978, Houston Percentage of organization and offering expense Percentage of Organization and Offering Expense Organization and offering expense Purchase units of limited partnership interest. Purchase Units Of Limited Partnership Interest Purchase units of limited partnership interest Whitby Property Whitby Property Member Whitby property. Net income (loss) attributable to SmartStop Self Storage REIT, Inc. common stockholders Series E Preferred Stock [Member] Series E Preferred Stock Percentage of Aggregate Principal Amount Holders Percentage of aggregate principal amount holders. Percentage of aggregate principal amount holders Forward Contract Indexed to Issuer's Equity, Type [Domain] Percentage of repurchase of debt instrument Percentage of Repurchase of Debt Instrument Percentage of repurchase of debt instrument. Clifton New Jersey. Clifton New Jersey [Member] Clifton Clifton, New Jersey Commission percentage of contract sales price. Commission Percentage of Contract Sales Price Commission percentage of contract sales price Strategic Storage Trust IV Property Management Agreement Strategic Storage Trust I V Property Management Agreement [Member] Strategic Storage Trust IV Property Management Agreement. Strategic Storage Growth Trust Inc Strategic Storage Growth Trust Inc [Member] Strategic Storage Growth Trust, Inc. Carrying value of properties Real Estate, Land, Held-for-Sale Derivatives Fair Value [Line Items] Derivatives, Fair Value [Line Items] Two Thousand Twenty Eight Canadian Notes [Member] Two thousand twenty eight canadian notes. 2028 Canadian Notes ASSETS Assets [Abstract] Income Tax Authority, Name [Axis] Operating Partnership Redemption Rights Operating Partnership Redemption Rights [Member] Operating partnership redemption rights. Investments in and Advances to Managed REITs Investments In And Advances To Managed Reits Policy [Text Block] Investments in and advances to managed reits. Percentage of upfront dealer manager Percentage of Upfront Dealer Manager Upfront dealer manager Outstanding principal, plus accrued interest Fully repayment of debt Repayments of Debt Repayment of non-credit facility debt Name of Property Name of Property [Domain] Maximum fund amount Variable Entity Maximum Remaining Amount Offering Variable entity maximum remaining amount offering. Two Thousand And Twenty Two Performance Grant [Member] Two thousand and twenty two performance grant. 2022 Performance Grant [Member] Credit facility cross default provision amount Credit Facility Cross Default Provision Amount Credit facility cross default provision amount. Long-Term Debt, Fiscal Year Maturity [Abstract] Document Fiscal Year Focus Document Fiscal Year Focus Accumulated depreciation, beginning balance Accumulated depreciation, ending balance Accumulated depreciation Real Estate Investment Property, Accumulated Depreciation Ancillary Operating Revenue Ancillary Operating Revenue [Member] Ancillary operating revenue. Other assets Other Assets [Member] Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Kelowna, British Columbia [Member] Kelowna, British Columbia. Kelowna, British Columbia Kelowna Commitments and Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Number of Shareholders Number of shareholders. Number of shareholders Distributions paid to preferred stockholders Payments of Ordinary Dividends, Preferred Stock and Preference Stock Antidilutive Securities Included In Computation Of Earnings Per Share Amount Antidilutive securities included in computation of earnings per share amount. Equivalent Shares, included in computation of earnings per share as effect of antidilutive Defined Contribution Plan, Employer Matching Contribution, Percent of Match Employer matching contribution, percent of match Awards vesting date Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vesting Date Share based compensation arrangement by share based payment award equity instruments other than options vesting date. Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Derivative, Contract End Date Maturity date Interest Rate, Maturity Date Corporates and others [Member] Corporates and others [Member] Corporate and Other Deferred Federal income tax expense (benefit) Deferred Federal Income Tax Expense (Benefit) Impact of foreign exchange rate changes Real Estate Accumulated Depreciation Foreign Exchange Gain Loss Impact Real estate accumulated depreciation foreign exchange gain loss impact. Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest Percentage of membership interest Guarantee obligations recourse percentage Guarantee Obligations Recourse Percentage Guarantee obligations recourse percentage. Contribution To Investment Contribution to investment. Contribution to investment Cash outflow for the purchase of units. Payments for Purchase of Units Purchase of SST VI Subordinated Class C Units Purchase of SST VI Subordinated Class C Units Preferred stock redemption period each year thereafter. Preferred Stock Redemption Period Each Year Thereafter [Member] Each Year Thereafter Former Credit Facility Term Loan Former Credit Facility Term Loan [Member] Former credit facility term loan. Preferred Stock Price Per Share Preferred stock price per share. Preferred stock price per share Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block] Noncontrolling Interests in Consolidated Entities Current DRP Offering Current DRP Offering [Member] Current drp offering member. Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Repurchase of noncontrolling interest in SST VI Advisor 2024 Performance Based Awards Two Thousand And Twenty Four Performance Based Awards [Member] Two Thousand And Twenty Four Performance Based Awards [Member] Finite-Lived Intangible Asset, Expected Amortization, Year One Total estimated future amortization expense of intangible assets, year 2025 Deferred tax assets: Components of Deferred Tax Assets [Abstract] Debt Conversion, Converted Instrument, Amount Received converted amount Real estate investment property, gross Real Estate Investment Property, at Cost Related party transaction expense, transition fee. Related Party Transaction Expense, Transition Fee Transition Fee Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] BMO Loan B M O Loan [Member] BMO Loan. Estimated value per common share Estimated Value Per Common Share Estimated value per common share. Due to affiliates Other Liabilities Other Liabilities, Total Increase (Decrease) Due from Affiliates Additional borrowing Fair Value Disclosures [Abstract] Third Anniversary Preferred Stock Redemption Period Three [Member] Preferred stock redemption period three. Two Thousand and Twenty One Performance Grant [Member] Two thousand and twenty performance grant. 2021 Performance Grant [Member] Commitments and Contingencies Disclosure [Abstract] Canada CANADA Repayment of revolver debt Repayments of Long-Term Lines of Credit Repayment of credit facility debt Riverview, Florida Florida FLORIDA Net income (loss) attributable to SmartStop Self Storage REIT, Inc. common stockholders Net loss attributable to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Net income (loss) attributable to SmartStop Self Storage REIT, Inc. common stockholders Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Due to affiliates Increase (Decrease) in Due to Affiliates Managed REIT Platform Revenue Managed R E I T Platform Revenue [Member] Managed REIT platform revenue. Common stock per share outstanding per day declared Common Stock Dividends Per Share Per Day Declared Common Stock Dividends Per Share Per Day Declared Long-term Line of Credit, Total Outstanding amount Long-Term Line of Credit Credit facility utilized Debt Instrument Debt Instrument [Axis] Derivative Instrument Derivative Instrument [Axis] Defined Benefit Plan, Interest Cost Cost of interest rate cap Share-Based Payment Arrangement [Abstract] Foreign Currency Forward, Strike Derivative, Foreign Currency Option Strike Price Derivative, foreign currency option strike price Preferred Units, Contributed Capital Investment of preferred investor Intangible contract assets Intangible contract assets Deferred Tax Liabilities, Intangible Assets Sale of Stock Sale of Stock [Axis] Other noncontrolling interests Other Noncontrolling Interests Interest Rate Swaps, Effective Date or Date Assumed Derivative Effective Date Date the derivative contract becomes effective, in CCYY-MM-DD format. Effective Date Derivative Instruments and Hedging Activities Derivatives, Policy [Policy Text Block] Concentration Risk Percentage1 Concentration Risk, Percentage Noncontrolling interests in our Operating Partnership Partners' Capital Attributable to Noncontrolling Interest Investments in Unconsolidated Real Estate Ventures Equity Method Investments and Joint Ventures Disclosure [Text Block] Revenues Revenues, Total Revenues Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Net cash used in investing activities Less: Distributions to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Undistributed Earnings (Loss) Allocated to Participating Securities, Basic, Total Less: Distributions to participating securities Title of 12(b) Security Schedule Of Segment Reporting Information By Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Accumulated Depreciation Impact of Foreign Exchange Rate Changes and Other Accumulated Depreciation Impact of Foreign Exchange Rate Changes and Other Impact of foreign exchange rate changes and other Common Stock, Value Authorized Common Stock Value Authorized Common stock, value authorize Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Unvested Weighted-Average Grant-Date Fair Value, Forfeited Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value SSGT III Mezzanine. SSGT III Mezzanine [Member] SSGT III Mezzanine Related Party Related and Nonrelated Parties [Domain] fixed charge coverage ratio Fixed Charge Coverage Ratio Fixed charge coverage ratio. 2030 and thereafter Long-Term Debt, Maturity, after Year Five Income Taxes Income Tax Disclosure [Text Block] Preferred Stock, shares issued Temporary Equity, Shares Issued Redemptions of common stock (in shares) Redemptions of common stock (in shares) Stock Redeemed or Called During Period, Shares CDOR Canadian Dealer Offered Rates [Member] Canadian Dealer Offered Rates. Maturity Date Range, End Debt Instrument, Maturity Date Range, End Document Information [Table] Document Information [Table] SSGT III Advisory Agreement SSGT III Advisory Agreement [Member] SSGT III advisory agreement member. Strategic Storage Growth Trust I I I Advisory Agreement Debt Instrument, Redemption, Period Debt Instrument, Redemption, Period [Domain] Reimbursement of stock dividend. Reimbursement of Stock Dividend Reimbursement of stock dividend Consolidated Entities [Axis] Strategic Storage Growth Trust I I I Property Management Agreement[Member] Strategic Storage Growth Trust I I I Property Management Agreement[Member] Strategic Storage Growth Trust I I I Property Management Agreement Increase (decrease) in cash from changes in assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Estimated Useful Lives used to Depreciate Real Property Assets Property, Plant and Equipment [Table Text Block] Percentage of prepay of debt instrument PercentageOfPrepayOfDebtInstrument Prepayment of Notes Preferred Equity Preferred Stock [Text Block] Income Tax Disclosure [Abstract] Strategic Storage Trust IV Tenant Program Revenue Member. Strategic Storage Trust I V Tenant Program Revenue [Member] Strategic Storage Trust IV Tenant Program Revenue Upfront consideration Upfront Consideration Upfront consideration. Additional Paid-in Capital Additional Paid-in Capital [Member] Aurora, Ontario Aurora, Ontario [Member] Aurora, Ontario [Member]. Acquisitions Real EstateFacilities Acquisitions Real estate facilities acquisitions Value of stock issuable during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the holder of the stock to reinvest dividends paid to them by the entity on new issues of stock by the entity. Stock Issuable During Period Value Dividend Reinvestment Plan Shares issuable pursuant to distribution reinvestment plan SSGT II Merger Agreement SSGT II merger agreement. S S G T I I Merger Agreement Member Utilities Utilities Operating Expense, Maintenance Measurement Frequency [Domain] Income Statement Location Statement of Income Location, Balance [Axis] Winter Garden FL [Member] Winter garden fl. Winter Garden, FL Trading Symbol Trading Symbol Related party, investment management revenues. Related Party Investment Management Revenues Managed REIT Platform Revenues Number of states located for self storage facilities Number Of States Located For Self Storage Facilities Number of states located for self storage facilities. Credit Facility Increase Commitments Credit Facility increase commitments. Credit Facility increase commitments Proceeds from Collection of (Payments to Fund) Long-Term Loans to Related Parties Proceeds from Collection of (Payments to Fund) Long-Term Loans to Related Parties, Total Funding of loans Schedule Of Related Party Transactions By Related Party [Table] Related Party Transaction [Table] Increase in dividend rate due to non redemption Change in dividend rate due to non redemption. Change in Dividend Rate due To Non Redemption Self Storage Facilities [Member] Self storage facilities. Self Storage Facilities Board Director Director [Member] Subsequent Event Type Subsequent Event Type [Axis] Time Based Awards Time Based Awards [Member] Time based awards. Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash flows from financing activities: Line of credit facility, annual unused fee Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Real estate investment property Real Estate Investment Property Net Excluding Construction In Process Real estate investment property net excluding construction in process. Fair Value, Recurring [Member] Fair Value, Recurring [Member] Percentage of Hurdle Amount Percentage of hurdle amount. Percentage of hurdle amount Holzwarth Rd Houston [Member] Holzwarth Rd Houston. Holzwarth Rd, Houston Number of self storage facilities Number Of Self Storage Facilities Number Of Self Storage Facilities Accumulated depreciation SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward] Equity Components Equity Components [Axis] Up to fourth anniversary. Up To Fourth Anniversary [Member] Up to Fourth Anniversary SSGT III SSGT III [Member] SSGT III [Member] Accounts Payable, Total Accounts Payable Payables to related parties Amendment, suspension or termination period of share Amendment Suspension Or Termination Period Of Share Amendment suspension or termination period of share. Payment Liquidation Amount Payment liquidation amount. Payment liquidation amount Equity Component Equity Component [Domain] Interest Accruing On Notes Interest Accruing On Notes Interest Accruing on Notes Value of secured obligations Debt Instrument Secured Obligation Debt instrument secured obligation. Real estate casualty loss. Real Estate Casualty Loss Casualty loss Second Anniversary Preferred Stock Redemption Period Two [Member] Preferred stock redemption period two. Current DRP Offering Current Distribution Reinvestment Plan [Member] Current distribution reinvestment plan. Investments, Total Investment Investments Summary of Relative Fair Values of Assets Acquired and Liabilities Assumed Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Business Acquisition Business Combination [Axis] Primary Offering IPO [Member] IPO Derivative, Fair Value, Net, Total Derivative, Fair Value, Net Accounts payable and accrued liabilities Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Underwritten Public Offering [Member] Underwritten public offering. Underwritten Public Offering [Member] 2023 Performance Based Awards Two Thousand And Twenty Three Performance Based Awards [Member] Two Thousand And Twenty Three Performance Based Awards [Member] Gross proceeds underwritten public offering. Gross Proceeds Underwritten Public Offering Gross proceeds - Underwritten Public Offering Depreciation, Depletion and Amortization, Nonproduction, Total Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Employees Employees [Member] Employees member. Statement of Comprehensive Income [Abstract] Maximum Maximum [Member] Real Estate Insurance Property insurance Non Cash Adjustment From Equity Method Investments In Managed Real Estate Investment Trusts Non cash adjustment from equity method investments in managed real estate investment trusts. Non-cash adjustment from equity method investments in Managed REITs Statistical Measurement Statistical Measurement [Axis] Daily Simple SOFR Loans, Term SOFR Loans and CORRA Loans. Daily Simple SOFR Loans, Term SOFR Loans and CORRA Loans [Member] Income Tax [Table] Income tax. Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Amount of accumulated and unpaid distributions Amount From Accumulated And Unpaid Distributions Amount from accumulated and unpaid distributions. Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Total Common stock, value Common Stock, Value, Issued Two Thousand and Twenty Five Performance Based Awards [Member] Two thousand and twenty five performance based awards. 2025 Performance Based Awards Number of States in which Entity Operates Number Of States In Which Entity Operates Underwritten Public Offering Costs Underwritten Public Offering Costs [Policy Text Block] Disclosure of underwritten public offering costs. Net Income (Loss) Available to Common Stockholders, Diluted Net Income (Loss) Available to Common Stockholders, Diluted, Total Net income (loss) attributable to common stockholders - diluted: Deferred Tax Assets Non - Capital Losses Amount of deferred tax asset attributable to non capital losses. Canadian real estate and non-capital losses Estimated useful life Small Personal Property And Equipment Assets Useful Life Small personal property assets, such as computers. Maturity date Line of Credit Facility, Expiration Date Maturity date Additional purchase consideration Purchase Consideration for Additional Purchase Purchase consideration for additional purchase. Required leverage ratio of our real estate portfolio Required Leverage Ratio Of Our Real Estate Portfolio Required leverage ratio of our real estate portfolio. Dividends [Axis] Payments to Acquire Other Productive Assets Purchase of other assets Principles of Consolidation Consolidation, Policy [Policy Text Block] Total equity Beginning Balance Ending Balance Equity, Including Portion Attributable to Noncontrolling Interest Secured Overnight Financing Rate (SOFR) [Member] SOFR [Member] Numbers of units Numbers of units Numbers of units Rate of acquisition fees of purchase price of contract Acquisition Fee As Percentage Of Contract Purchase Price Acquisition Fee as Percentage of Contract Purchase Price SST VI Mezzanine. SST VI Mezzanine [Member] SST VI Mezzanine Non Revolving Debt Non Revolving Credit Facility [Member] Non revolving debt. Percentage Of Asset Acquisition Consideration Payable In Operating Partnership Units Percentage of asset acquisition consideration payable in operating partnership units. Percentage of asset acquisition consideration payable in OP units Distributions to preferred stockholders Preferred Stock Dividends, Income Statement Impact Less: Distributions to preferred stockholders Distributions paid to noncontrolling interest in our OP Payments to noncontrolling interest in our OP Payments to noncontrolling interest in our OP Distributions paid to noncontrolling interests in our OP Evaluation of Possible Impairment of Real Property Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Loss contingency other non-cancellable future payment due year three Loss Contingency Other Non-Cancellable Future Payment Due Year Three Loss contingency other non-cancellable future payment due year three. Amortization of debt issuance costs Amortization of Debt Issuance Costs Summary of sponsorship funding payments. Summary of Sponsorship Funding Payments Summary of Sponsorship Funding Payments Canmore, Alberta Canmore Alberta [Member] Canmore, Alberta. Distributions Accumulated Distributions in Excess of Net Income [Member] Daily Simple SOFR Loans and Term SOFR Loans [Member] Daily simple SOFR loans and term SOFR loans. Daily Simple SOFR Loans and Term SOFR Loans Other income (expense): Other Nonoperating Income (Expense) [Abstract] Strategic Storage Trust IV, Inc. Strategic Storage Trust I V Inc [Member] Strategic Storage Trust IV, Inc Preferred Stock, Shares Authorized Preferred stock, authorized New York Preferred Investment [Member] New York preferred investment. New York Preferred Investment Comprehensive (income) loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive (income) loss attributable to noncontrolling interests Property Management Property Management [Member] Property management member. Total operating expenses Total operating expenses Costs and Expenses Finite-Lived Intangible Assets by Major Class Finite-Lived Intangible Assets by Major Class [Axis] Schedule of Summarized Real Estate Secured Debt Schedule of Debt [Table Text Block] Lender Name [Axis] Lender Name Temporary Equity, Accretion to Redemption Value, Adjustment Redemption of common stock included in accounts payable and accrued liabilities Accretion- preferred equity costs Transfer Agent fees Transfer Agent Fees Expensed [Member] Transfer agent fees expensed. Joint venture formation,additional fund Joint Venture Formation, Additional Fund Joint venture formation, additional fund. CMBS Loan C M B S Loan [Member] CMBS Loan. Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Accounts payable and accrued liabilities Accounts Payable and Other Accrued Liabilities Related Party Transaction [Line Items] Related Party Transaction [Line Items] Two Thousand and Thirty Canadian Notes [Member] Two thousand and thirty canadian notes member. 2030 Canadian Notes Schedule Of Business Acquisitions By Acquisition [Table] Business Combination [Table] Real Estate Assets Buildings Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment, Building Entity Registrant Name Entity Registrant Name Debt Debt Disclosure [Text Block] Finite-Lived Intangible Asset, Expected Amortization, Year Two Total estimated future amortization expense of intangible assets, year 2026 Related party sponsor funding reduction. Related Party Sponsor Funding Reduction Sponsor funding reduction Sponsor funding reduction SST X Advisory Agreement [Member] Sst x advisory agreement. SST X Advisory Agreement Business Combination, Contingent Consideration [Table Text Block] Summary of Reconciles Total Consideration Transferred Strategic Storage Trust I V Advisory Agreement [Member] Strategic Storage Trust IV Advisory Agreement Strategic Storage Trust IV Advisory Agreement. Other Nonoperating Income (Expense), Total Other Nonoperating Income (Expense) Other, net Other, net Number of Preferred Unit Additionally Purchased Number ofpPreferred unit additionally purchased. Number of preferred unit additionally purchased. Deferred State income tax expense (benefit) Deferred State and Local Income Tax Expense (Benefit) Subsequent Events [Abstract] SSGT III OP [Member] SSGT III OP [Member] SSGT III OP Number of properties under ownership interests Number of Properties Under Ownership Interests Number of properties under ownership interests. Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] SOFR Consolidated Entities [Domain] Finite-Lived Intangible Asset, Expected Amortization, Year Three Total estimated future amortization expense of intangible assets, year 2027 Income tax (expense) benefit Income Tax Expense (Benefit), Total Income Tax Expense (Benefit) Income tax (expense) benefit Measurement Frequency [Axis] Investment in SST VI Series D Preferred Units Investment in SST VI series D preferred units. Investment in SST VI Series D Preferred Units Net proceeds from issuance of common stock Proceeds from Issuance of Common Stock After Tenth Anniversary Preferred Stock Redemption Period After Ten Year [Member] Preferred stock redemption period after ten year. Cad Forward Matured November Twenty Eight Two Thousand Twenty Five [Member] Cad forward matured november twenty eight two thousand twenty five. CAD Forward November 28, 2025 Distributions payable Non Cash Transactions Distribution Payable Non cash transactions distribution payable. Loss related to equity interest. Loss related to equity interest Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Casualty Insurance Recoveries Policy [Text Block]. Casualty Insurance Recoveries Policy [Text Block] Casualty Insurance Recoveries Subsidiary, Ownership Percentage, Noncontrolling Owner Percentage of Joint venture minority ownership Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Concentration Concentration Risk, Credit Risk, Policy [Policy Text Block] Class T Common stock Common Class T [Member] Common class T. Hedge Cash Settlement Matures on November Twenty EightTwo Thousand Twenty Five [Member] Hedge Cash Settlement Matures on November Twenty EightTwo Thousand Twenty Five [Member] Hedge Cash Settlement Matures on November Twenty Eight Two Thousand Twenty Five Number Of Self Storage Properties Number of self storage properties. Number of properties Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income (loss) Consolidated Leverage Ratio. Consolidated Leverage Ratio [Member] Consolidated Leverage Ratio Federal Income Tax Expense (benefit) Federal Income Tax Expense (Benefit), Continuing Operations Net Asset Value Per Share, Ending Balance Net Asset Value Per Share, Beginning Balance Net asset value per share and redemption price Net Asset Value Per Share NAV per share SST VI Mezzanine Loan S S T V I mezzanine loan. S S T V I Mezzanine Loan [Member] Unvested Shares, Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Issuance of equity Award Strategic Storage Growth Trust II Advisory Agreement Strategic Storage Growth Trust I I Advisory Agreement [Member] Strategic Storage Growth Trust II Advisory Agreement. Asset Total assets Total assets Assets Schedule Of Property Plant And Equipment [Table] Property, Plant and Equipment [Table] Hedge Cash Settlement Matures on February Twenty Seven Two Thousand Twenty Five Hedge Cash Settlement Matures on February Twenty Seven Two Thousand Twenty Five [Member] Hedge Cash Settlement Matures on February Twenty Seven Two Thousand Twenty Five Holcombe Blvd, Houston Holcombe Blvd Houston [Member] Holcombe Blvd Houston. Income Statement [Abstract] Ratio of Indebtedness to Net Capital Ratio of Total Indebtedness Carrying value of minority investment Noncontrolling Interest in Joint Ventures Derivative, Amount of Hedged Item Settlement amount of hedge Interest Rate Cap Interest Rate Cap [Member] Interest Rate Caps Number of properties owned by Managed REITs which is operated by the company Number Of Properties Owned By Managed R E I Ts Number of properties owned by managed REITs. Number of properties Accounting for Equity Awards Share-Based Payment Arrangement [Policy Text Block] Deferred income tax expense (benefit) Deferred income tax benefit (expense) Deferred Income Tax Expense (Benefit), Total Deferred Income Tax Expense (Benefit) Fifth Anniversary Preferred Stock Redemption Period Five [Member] Preferred stock redemption period five. Number of shares issued in offering Sale of Stock, Number of Shares Issued in Transaction Number of shares issued Issuance of noncontrolling interest SST VI Advisor Issuance of Noncontrolling Interest SST VI Advisor. Issuance of noncontrolling interest SST VI Advisor Stock Issued During Period, Shares, New Issues Issuance of shares in Underwritten Public Offering (in shares) Preferred Stock, shares authorized Temporary Equity, Shares Authorized Depreciation of Real Property Assets Depreciation, Depletion, and Amortization [Policy Text Block] Unvested Shares, Vested Unvested Shares, Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period LTIP units Consolidation Considerations Consolidation, Variable Interest Entity, Policy [Policy Text Block] Business Combination [Abstract] Reimbursements payable to SAM under the Administrative Services Agreement Reimbursements payable to SAM under the Administrative Services Agreement Reimbursements payable to SAM under the Administrative Services Agreement Earnings Per Share, Diluted Earnings Per Share, Diluted, Total Net income (loss) per Common Stock Class A & Class T share - diluted Payments to Acquire Real Estate and Real Estate Joint Ventures Investments in unconsolidated JV Properties Debt Conversion, Original Debt, Amount The balance conversion amount Summary of Reportable Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Allard Ontario [Member] Allard, Ontario. Allard Ontario Finite-Lived Intangible Asset, Expected Amortization, Year Five Total estimated future amortization expense of intangible assets, year 2029 Title of Individual Title and Position [Domain] Preferred stock, conversion basis Preferred Stock, Conversion Basis Dividends, Common Stock, Total Distributions Dividends, Common Stock Asset Acquisition [Axis] Net income (loss) attributable to common stockholders basic Net income (loss) attributable to common stockholders basic Net loss attributable to common stockholders - basic: Net income (loss) attributable to common stockholders - basic: City Area Code City Area Code Managed REIT. Managed REIT [Member] Managed REIT Initial closing amount Initial Closing Amount Occurred On Commitment Related To Preferred Stock Purchase Agreement Initial closing amount occurred on commitment related to preferred stock purchase agreement. Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss) Recorded sponsor funding reductions. Recorded Sponsor Funding Reductions Recorded sponsor funding reduction Proceeds from Lines of Credit, Total Proceeds from line of credit Proceeds from Lines of Credit Proceeds from issuance of credit facility debt Loan drawn from credit facility SST IV TCF Loan Sst Iv Tcf Loan [Member] SST IV TCF loan. Loan amount Debt Instrument, Face Amount Debt issued Intangible Assets Intangible Assets, Finite-Lived, Policy [Policy Text Block] Buildings and Improvements, Gross, Total Buildings Buildings and Improvements, Gross Principal borrowing amount Initial maximum amount available Line of Credit Facility, Maximum Borrowing Capacity Business Acquisition [Line Items] Business Combination [Line Items] Alberta Canada [Member] Alberta Canada. Alberta, Canada RedemptionOfFractionalCommonShares Redemption of fractional common shares. Redemption of fractional common shares Defined Benefit Plan [Table] Common class Z. Common Class Z [Member] Class Z Vaughan, Ontario Vaughan Ontario [Member] Vaughan, Ontario. Hedge Cash Settlement On November Sixteen Two Thousand Twenty Three [Member] Hedge cash settlement on november sixteen two thousand twenty three. Hedge Cash Settlement On November Sixteen Two Thousand Twenty Three Amounts incurred in sponsorship funding. Amounts Incurred In Sponsorship Funding Amounts incurred Aggregate principal amount of notes issued AggregatePrincipalAmountOfNotesIssued AggregatePrincipalAmountOfNotesIssued Date Real Estate Venture Became Operational Date Of Real Estate Venture Became Operational Date of real estate venture became operational. SOFR index adjustment. SOFR Index Adjustment [Member] SOFR Index Adjustment Awards vesting year Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vesting year Share based compensation arrangement by share based payment award equity instruments other than options vesting year. Non capital operating loss carryforwards Non Capital Operating Loss Carryforwards Non capital loss carryforwards Common Class Y And Z Common class y and z. Common Class Y And Z [Member] Class Y And Z Indefinite lived trademark Trademarks, net of accumulated amortization Indefinite-Lived Trademarks Common stock shares without designation, authorized Common stock shares without designation, authorized Amount of Gain or (Loss) Recognized in Income on Derivative (Reclassifications of Missed Forecasted Transactions) Derivatives used in Net Investment Hedge, Gain (Loss), Reclassified to Earnings, Net of Tax Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Site Improvements Land Improvements [Member] Stock Issued During Period, Shares, Restricted Stock Award, Gross Issuance of restricted stock, net of forfeitures (in shares) Torbarrie Loan Torbarrie Loan [Member] Torbarrie loan. Business Combination, Acquiree's Revenue since Acquisition Date, Actual 2025 Revenue Joint Ventures [Member] Joint ventures. Derivative Liability, Fair Value, Gross Liability, Total Derivative fair value, liability Derivative Liability, Subject to Master Netting Arrangement, before Offset Letter of Credit Letter of Credit [Member] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Goodwill Valuation Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] CORRA adjustment. CORRA Adjustment [Member] CORRA Adjustment Canadian Notes Two Thousand Twenty Eight [Member] Canadian Notes Two Thousand Twenty Eight [Member] 2028 Canadian Notes Deferred Canadian income tax expense (benefit) Deferred Foreign Income Tax Expense (Benefit) Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Cash, cash equivalents, and restricted cash end of year Cash, cash equivalents, and restricted cash beginning of year KeyBank Florida CMBS Loan Key Bank Florida C M B S Loan [Member] KeyBank Florida CMBS loan. Income (loss) from operations Operating Income (Loss) Income from operations Strategic Storage Trust VI Property Management Agreement Strategic Storage Trust V I Property Management Agreement [Member] Strategic Storage Trust VI Property Management Agreement. Line of Credit Facility, Capacity Available for Trade Purchases Remaining capacity for general working capital purposes Future Principal Payment Requirements on Outstanding Debt Schedule Of Maturities Of Debt Table [Text Block] Schedule of maturities of debt. Accumulated Deficit Retained Earnings [Member] Repurchase Of Membership Interests Paid Repurchase of membership interests paid. Repurchase of membership interests Nantucket Joint Venture Nantucket Joint Venture. Nantucket Joint Venture [Member] Number of self storage facilities purchased. Number Of Self Storage Facilities Purchased Number of self storage facilities purchased Additional amount available under credit facility Line Of Credit Facility Additional Borrowing Capacity Line of credit facility additional borrowing capacity. Class C Common stock Common Class C [Member] Daily simple SOFR plus. Daily Simple SOFR Plus [Member] Daily simple SOFR plus. Equity based compensation expense Share-based Payment Arrangement, Noncash Expense, Total Share-Based Payment Arrangement, Noncash Expense Issuance costs Payments of Stock Issuance Costs Offering costs Remaining unfunded capital commitment Unfunded Capital Commitment Unfunded capital commitment. Dealer Manager Dealer Manager [Member] Dealer manager. Fair Value, Inputs, Level 1 [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Class Of Stock [Line Items] Class of Stock [Line Items] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash provided by (used in) financing activities TRS subsidiary [Member] TRS subsidiary [Member] TRS Subsidiary Deferred Income Tax Liabilities, Net, Total Deferred tax liabilities Deferred Income Tax Liabilities, Net Fixed Rate Secured Debt Secured Debt [Member] Strategic Storage Trademark Strategic Storage Trademark [Member] Strategic storage trademark. Repayment of SSGT III loans Repayment of Loans Repayment of loans. Derivative Contract Derivative Contract [Domain] Percentage of fee of former external property managers Percentage Of Service Fees On Gross Revenue For Managing Properties percentage of service fees on gross revenue for managing properties. Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Summary of Antidilutive Shares Excluded from Computation of Earnings per Share Greater Toronto Area Of Canada [Member] Greater Toronto Area of Canada Greater Toronto Area of Canada. Summary of Activity in Real Estate Facilities Schedule of Real Estate Properties [Table Text Block] Rahway New Jersey [Member] Rahway New Jersey. Rahway, New Jersey Rahway Entity Interactive Data Current Entity Interactive Data Current Income Statement Location Statement of Income Location, Balance [Domain] Other Income [Member] Other Income Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Repayments of Lines of Credit Repayment of borrowings Repayments of Lines of Credit Investment Thereafter Investment Thereafter [Member] Investment thereafter. Non Cash Transactions Earnest Deposits on acquisitions Assigned To Managed REITs Amounts Reclassified To Managed REITs Receivables Non cash transactions earnest deposits on acquisitions assigned to managed reits amounts reclassified to managed reits receivables. Earnest deposits on acquisitions assigned to the Managed REITs, amounts reclassified to Managed REITs receivables Equity InvestmentInAndAdvancesToAffiliatesAmountOfEquity Investmentinandadvancestoaffiliatesamountofequity. O 2024 Q2 Dividends. O 2024 Q2 Dividends [Member] O 2024 Q2 Dividends SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract] Gross proceeds from issuance of common stock. Gross Proceeds From Issuance Of Common Stock Gross proceeds from issuance of common stock Related party, investment management revenues net. Related Party Investment Management Revenues Net Total Managed REIT Platform Revenues SOFR Cap June 28, 2024 Secured Overnight Financing Rate Sofr Overnight Index Matured June Twenty Eight Two Thousand Twenty Four [Member] Secured overnight financing rate sofr overnight index matured june twenty eight two thousand twenty four member Deferred tax assets: Components of Deferred Tax Liabilities [Abstract] Common Stock, Dividends, Per Share, Declared Dividends per share declared Dividend Declared [Line Items] Dividend Declared [Line Items] Dividend Declared [Line Items] Line of credit facility, current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Line of credit facility, current borrowing capacity Percentage of acquisition price Percentage Of Acquisition Price Percentage of acquisition price. Entity Tax Identification Number Entity Tax Identification Number Hedge Cash Settlement Matures on MayTwenty Seven Two Thousand Twenty Five [Member] Hedge Cash Settlement Matures on MayTwenty Seven Two Thousand Twenty Five [Member] Hedge Cash Settlement Matures on May Twenty Seven Two Thousand Twenty Five Revenues: Revenues [Abstract] Share Price Share Price J V Properties [Member] J V properties. J V Properties Long-term Debt, Type Long-Term Debt, Type [Axis] CAD Forward May 27, 2025 Cad Forward Matured May Twenty Seven Two Thousand Twenty Five [Member] Cad forward matured may twenty seven two thousand twenty five. Debt Instrument, Term Term Houston Property Loan [Member] Houston property loan. Houston Property Loan CAD Forward Matured February Twenty Seven Two Thousand Twenty Five [Member] Cad forward matured february twenty seven two thousand twenty five. CAD Forward February 27, 2025 Income Tax Authority, Name [Domain] Other Managed REIT Revenue Other Managed R E I T Revenue [Member] Other Managed REIT Revenue Member. Impact of foreign exchange rate changes on cash and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest [Abstract] Comprehensive income (loss) attributable to noncontrolling interests: Hedge settlement amount Proceeds from Hedge, Investing Activities Credit facility sublimits Line Of Credit Facility Sublimits Line of credit facility sublimits. Tenth Anniversary Preferred Stock Redemption Period Ten [Member] Preferred stock redemption period ten. Local Phone Number Local Phone Number Strategic Storage Trust VI Tenant Program Revenue Strategic Storage Trust V I Tenant Program Revenue [Member] Strategic Storage Trust VI Tenant Program Revenue. Related Party Transaction Related Party Transaction [Domain] Dividend Declared [Table] Dividend Declared [Table] Dividend Declared [Table] Second and final closing amount Second And Final Closing Amount Occurred On Commitment Related To Preferred Stock Purchase Agreement Second and final closing amount occurred on commitment related to preferred stock purchase agreement. Accounts payable current and noncurrent incurred. Accounts Payable Current And Noncurrent Incurred Payables incurred to related parties Upon Achievement Of Certain Financial Conditions Upon Achievement Of Certain Financial Conditions [Member] Upon achievement of certain financial conditions Number of properties encumbered Number Of Real Estate Properties Encumbered Number of real estate properties encumbered. Derivative Instruments Deferred Payment Derivative instruments deferred payment. Derivative instruments deferred payment. Debt issuance costs Payments of Financing Costs, Total Payments of Financing Costs Accumulated Distributions in Excess of Net Income, Total Distributions Accumulated Distributions in Excess of Net Income Offering costs Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs SmartStop OP Smart Stop O P [Member] SmartStop OP. Loss contingency other non-cancellable future payment due year one Loss Contingency Other Non-Cancellable Future Payment Due Year One Loss contingency other non-cancellable future payment due year one. Credit Facility Term Loan Credit Facility Term Loan [Member] Credit facility term loan. Accounting Policies [Abstract] Shares issued pursuant to distribution reinvestment plan Issuance of shares for distribution reinvestment plan (in shares) Stock Issued During Period, Shares, Dividend Reinvestment Plan Number of employees covering the management regarding principal assets acquired Number Of Employees Covering The Management Regarding Principal Assets Acquired Number of employees covering the management regarding principal assets acquired. Non-Capital Losses Expiration Year Non-capital losses expiration year. Net Income Loss Attributable To Noncontrolling Interest In Operating Partnership Net income loss attributable to noncontrolling interest in operating partnership. Net income (loss) attributable to SmartStop Self Storage REIT, Inc. Net income (loss) attributable to SmartStop Self Storage REIT, Inc. Revenue from Contract with Customer, Excluding Assessed Tax, Total Total revenues Revenue from Contract with Customer, Excluding Assessed Tax Revenue Two thousand and twenty four credit facility. Two Thousand and Twenty Four Credit Facility [Member] 2024 Credit Facility Improvements and additions SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Improvements Self Storage Rental Revenue Self Storage Rental Revenue [Member] Self storage rental revenue. Hedge Cash Settlement Matures on July Eleven Two Thousand Twenty Five [Member] Hedge cash settlement matures on july eleven two thousand twenty five. Class of Stock Class of Stock [Domain] Shares available for issuance Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Unrecognized compensation expense, expected weighted average-recognition period Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Maximum annual contributions per employee, percentage CORRA swap. CORRA Swap [Member] CORRA Swap Schedule Of Stock By Class [Table] Stock, Class of Stock [Table] Goodwill, Impaired, Accumulated Impairment Loss Accumulated impairment charges to goodwill Common Stock Redemption Purchase Price Per Share Common stock redemption purchase price per share. Redemption of common stock, purchase price Entity Emerging Growth Company Entity Emerging Growth Company SOFR Cap May 1, 2025 Secured Overnight Financing Rate Sofr Overnight Index Matured May One TwoThousand Twenty Five [Member] Secured overnight financing rate sofr overnight index matured may one two thousand twenty five member Area of Land Area Of Land Summary of Related Party Carrying Value Of Investments In Advances Investments in and Advances to Affiliates [Table Text Block]