Related Party Transactions - Summary of Fees and Revenue Related to the Managed REITs (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Related Party Transaction [Line Items]      
Managed REIT Platform Revenues $ 6,322,970 $ 8,048,630 $ 3,068,306
Strategic Storage Trust IV Advisory Agreement      
Related Party Transaction [Line Items]      
Managed REIT Platform Revenues [1] 716,278 3,211,661 1,153,137
Strategic Storage Growth Trust II Advisory Agreement      
Related Party Transaction [Line Items]      
Managed REIT Platform Revenues 1,843,769 1,210,529 310,786
Strategic Storage Trust V I Advisory Agreement      
Related Party Transaction [Line Items]      
Managed REIT Platform Revenues 178,282    
Strategic Storage Trust IV Property Management Agreement      
Related Party Transaction [Line Items]      
Managed REIT Platform Revenues [1] 346,179 1,429,632 602,162
Strategic Storage Growth Trust II Property Management Agreement      
Related Party Transaction [Line Items]      
Managed REIT Platform Revenues 709,533 371,751 91,594
Strategic Storage Trust V I Property Management Agreement      
Related Party Transaction [Line Items]      
Managed REIT Platform Revenues 99,602    
Other Managed REIT Revenue      
Related Party Transaction [Line Items]      
Managed REIT Platform Revenues [2] 1,348,035 674,140 619,210
Strategic Storage Trust IV Tenant Protection Program Revenue      
Related Party Transaction [Line Items]      
Managed REIT Platform Revenues [3] 285,959 893,315  
Strategic Storage Growth Trust II Tenant Protection Program Revenue      
Related Party Transaction [Line Items]      
Managed REIT Platform Revenues 636,671 $ 257,602 37,269
Strategic Storage Trust VI Tenant Protection Program Revenue      
Related Party Transaction [Line Items]      
Managed REIT Platform Revenues $ 158,662   $ 254,148
[1] On March 17, 2021, we acquired SST IV and no longer earn such fees.
[2] Such revenues primarily include construction management, development fees, and other miscellaneous revenues.
[3] On March 17, 2021, we acquired SST IV and such revenue is now included in ancillary operating revenue in our consolidated statements of operations.