Organization - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2022 Property State
Organization [Line Items]
Number of self-storage properties owned and managed	1,198
Number of states in which self-storage properties owned and managed | State	37
Number of properties managed under joint ventures	141
Number of properties managed with no ownership	299
Number of leased properties	5
Revenue [Member]
Organization [Line Items]
Number of self-storage properties owned and managed	1,198
Geographic Concentration Risk [Member] | TX [Member] | Revenue [Member]
Organization [Line Items]
Concentration risk, percentage	16.00%
Geographic Concentration Risk [Member] | FL [Member] | Revenue [Member]
Organization [Line Items]
Concentration risk, percentage	15.00%