v3.26.1
Organization - Additional Information (Detail)
 1 Months Ended 3 Months Ended
Jan. 27, 2025
USD ($)
Jul. 10, 2019
USD ($)
May 01, 2018
USD ($)
shares
Sep. 28, 2017
USD ($)
shares
Jan. 27, 2017
USD ($)
shares
Oct. 05, 2016
USD ($)
shares
Oct. 04, 2016
USD ($)
shares
Jun. 30, 2019
Mar. 31, 2026
USD ($)
Employee
$ / shares
shares
Organization and Nature of Operations [Line Items]                  
Date of formation of company                 Oct. 04, 2016
Number of employees | Employee                 0
Strategic Storage Operating Partnership IV, L.P. [Member]                  
Organization and Nature of Operations [Line Items]                  
Date of formation of company                 Oct. 05, 2016
Capital contribution | $           $ 1,000      
Percentage of common units of limited partnership interest of operating partnership                 99.80%
SSSHT Property Management, LLC (Property Manager) [Member]                  
Organization and Nature of Operations [Line Items]                  
Date of formation of company                 Oct. 03, 2016
Class Y Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Estimated value per share | $ / shares                 $ 6.37
Class Z Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Estimated value per share | $ / shares                 6.37
Class A Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Estimated value per share | $ / shares                 6.37
Class T Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Estimated value per share | $ / shares                 6.37
Class W Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Estimated value per share | $ / shares                 $ 6.37
Private Offering [Member]                  
Organization and Nature of Operations [Line Items]                  
Number of common stock issued         10,700,000        
Shares issued pursuant to distribution reinvestment plan         1,000,000        
Gross proceeds from issuance of common stock | $         $ 91,500,000       $ 5,700,000
Private Offering [Member] | Class Y Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Shares issued pursuant to distribution reinvestment plan                 10,000
Private Offering [Member] | Class Z Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Shares issued pursuant to distribution reinvestment plan                 1,000
Private Offering [Member] | Class A Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Shares issued pursuant to distribution reinvestment plan                 610,000
Private Offering [Member] | Class T Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Shares issued pursuant to distribution reinvestment plan                 8,000
Private Offering [Member] | Class W Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Shares issued pursuant to distribution reinvestment plan                 3,000
Primary Offering [Member]                  
Organization and Nature of Operations [Line Items]                  
Gross proceeds from issuance of common stock | $                 $ 17,100,000
Primary Offering [Member] | Class Y Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Number of common stock issued                 1,100,000
Primary Offering [Member] | Class Z Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Number of common stock issued                 165,000
Primary Offering [Member] | Class A Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Number of common stock issued                 362,000
Primary Offering [Member] | Class T Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Number of common stock issued                 70,000
Primary Offering [Member] | Class W Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Number of common stock issued                 83,000
SSSHT Advisor, LLC (Advisor) [Member] | Strategic Storage Operating Partnership IV, L.P. [Member]                  
Organization and Nature of Operations [Line Items]                  
Advisor purchased a limited partnership interest in operating partnership | $       $ 199,000   $ 1,000      
Advisor acquired limited partnership interest in operating partnership, number of partnership units       25,447.57   111.11      
Capital contribution | $       $ 200,000          
Percentage of common units of limited partnership interest of operating partnership                 0.20%
SSSHT Advisor, LLC (Advisor) [Member] | Strategic Transfer Agent Services, LLC (Transfer Agent) [Member]                  
Organization and Nature of Operations [Line Items]                  
Ownership percentage                 100.00%
Transfer agent transition fee | $ $ 50,000                
SSSHT Advisor, LLC (Advisor) [Member] | Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Number of common stock issued             111.11    
Issuance of common stock | $             $ 1,000    
Affiliate [Member] | SSSHT Property Management, LLC (Property Manager) [Member]                  
Organization and Nature of Operations [Line Items]                  
Percentage owned by affiliate                 2.50%
SmartStop Asset Management, LLC (Sponsor) [Member] | SSSHT Advisor, LLC (Advisor) [Member]                  
Organization and Nature of Operations [Line Items]                  
Percentage of economic interest owned by sponsor               97.50%  
Percentage of voting membership interests owned by sponsor               100.00%  
SmartStop Asset Management, LLC (Sponsor) [Member] | SSSHT Property Management, LLC (Property Manager) [Member]                  
Organization and Nature of Operations [Line Items]                  
Percentage of property management owned by sponsor               100.00%  
SmartStop Asset Management, LLC (Sponsor) [Member] | Select Capital Corporation (Dealer Manager) [Member]                  
Organization and Nature of Operations [Line Items]                  
Dealer manager agreement termination date                 Jun. 16, 2020
Percentage of non-voting equity interest                 15.00%
Maximum [Member] | Class Y Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Shares issuable pursuant to distribution reinvestment plan | $   $ 700,000,000              
Maximum [Member] | Class Z Common Stock [Member]                  
Organization and Nature of Operations [Line Items]                  
Shares issuable pursuant to distribution reinvestment plan | $   $ 300,000,000              
Maximum [Member] | Private Offering [Member]                  
Organization and Nature of Operations [Line Items]                  
Issuance of common stock | $         $ 100,000,000        
Maximum [Member] | Primary Offering [Member] | S-11 Registration Statement [Member]                  
Organization and Nature of Operations [Line Items]                  
Common stock shares registered for sale to public     1,000,000,000            
Maximum [Member] | Primary and Public Offering [Member] | S-11 Registration Statement [Member]                  
Organization and Nature of Operations [Line Items]                  
Shares issuable pursuant to distribution reinvestment plan | $     $ 95,000,000