Annual report pursuant to Section 13 and 15(d)

Organization - Additional Information (Detail)

v3.22.0.1
Organization - Additional Information (Detail)
12 Months Ended
Dec. 31, 2021
Property
State
Organization [Line Items]  
Number of self-storage properties owned and managed 1,076
Number of states in which self-storage properties owned and managed | State 35
Number of properties managed under joint ventures 116
Number of properties managed with no ownership 251
Number of leased properties 5
Revenue [Member]  
Organization [Line Items]  
Number of self-storage properties owned and managed 1,076
Geographic Concentration Risk [Member] | Texas [Member] | Revenue [Member]  
Organization [Line Items]  
Concentration risk, percentage 17.00%
Geographic Concentration Risk [Member] | Florida [Member] | Revenue [Member]  
Organization [Line Items]  
Concentration risk, percentage 14.00%