Organization - Additional Information (Detail)								3 Months Ended
	Nov. 01, 2023 $ / shares	May 02, 2023 USD ($) shares	May 01, 2023 USD ($)	Jan. 30, 2023 USD ($) $ / shares shares	Mar. 10, 2021 USD ($) shares	Feb. 26, 2021 USD ($)	Jan. 15, 2021 USD ($)	Mar. 31, 2024 USD ($) OperatingSelfStorageProperty UnconsolidatedRealEstateVenture shares	Mar. 31, 2023 USD ($) shares
Organization And Nature Of Operations [Line Items]
Number of operating self storage properties owned | OperatingSelfStorageProperty								24
Percentage of non-voting economic interest owned by affiliates								10.00%
Number of unconsolidated real estate ventures | UnconsolidatedRealEstateVenture								5
Advisor purchased initial investment in operating partnership | $								$ 202,000
Sale of Stock, Consideration Received on Transaction | $			$ 150,000,000
Issuance costs | $								1,035,663	$ 1,086,148
Purchase Agreement
Organization And Nature Of Operations [Line Items]
Aggregate value of shares committed to purchase | $			150,000,000
Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Gross proceeds from issuance of common stock | $								$ 8,600,000
Class A Common Stock
Organization And Nature Of Operations [Line Items]
One time stock dividend | $ / shares	$ 0.11075
Class A Common Stock | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering									294,558
Class A Common Stock | Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								88,000
Price per share | $ / shares	9.3
Class A Common Stock | Pubic Offering | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								2,900,000
Class A Common Stock | Private Offering
Organization And Nature Of Operations [Line Items]
Gross proceeds from issuance of common stock | $								$ 30,300,000
Class P Common Stock
Organization And Nature Of Operations [Line Items]
Gross proceeds from issuance of common stock | $								$ 100,700,000
Class P Common Stock | Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								600,000
Price per share | $ / shares	9.3
Class P Common Stock | Private Offering | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								10,600,000
Class T Common Stock
Organization And Nature Of Operations [Line Items]
One time stock dividend | $ / shares	0.07526
Class T Common Stock | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering									673,565
Class T Common Stock | Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								145,500
Price per share | $ / shares	9.3
Class T Common Stock | Private Offering
Organization And Nature Of Operations [Line Items]
Gross proceeds from issuance of common stock | $								$ 48,100,000
Class T Common Stock | Private Offering | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								4,800,000
Class W Common Stock
Organization And Nature Of Operations [Line Items]
One time stock dividend | $ / shares	0.01075
Class W Common Stock | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering									140,638
Class W Common Stock | Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								21,000
Price per share | $ / shares	9.3
Class W Common Stock | Private Offering
Organization And Nature Of Operations [Line Items]
Gross proceeds from issuance of common stock | $								$ 6,300,000
Class W Common Stock | Private Offering | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								700,000
Series A Cumulative Redeemable Preferred Units
Organization And Nature Of Operations [Line Items]
Issuance of preferred units				600,000
Series A Cumulative Redeemable Preferred Units | Preferred Unit Purchase Agreement
Organization And Nature Of Operations [Line Items]
Issuance of preferred units				600,000
Preferred units, liquidation preference | $ / shares				$ 25
Capital contribution to operating partnership | $				$ 15,000,000
Preferred stock redemption amount | $		$ 15,000,000
Series B Convertible Preferred Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering		150,000,000
Series B Convertible Preferred Stock | Purchase Agreement
Organization And Nature Of Operations [Line Items]
Issuance costs | $			$ 1,400,000
Class Y Common Stock
Organization And Nature Of Operations [Line Items]
Price per share | $ / shares	9.3
Class Y Common Stock | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								1,054,322
Class Y Common Stock | Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								5,000
Class Y Common Stock | Private Offering
Organization And Nature Of Operations [Line Items]
Gross proceeds from issuance of common stock | $								$ 13,400,000
Class Y Common Stock | Private Offering | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								1,400,000
Class Z Common Stock
Organization And Nature Of Operations [Line Items]
Price per share | $ / shares	9.3
Class Z Common Stock | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								83,978
Class Z Common Stock | Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								500
Class Z Common Stock | Private Offering
Organization And Nature Of Operations [Line Items]
Gross proceeds from issuance of common stock | $								$ 1,100,000
Class Z Common Stock | Private Offering | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering								100,000
Class Y Shares and Class Z Shares | Sponsor Funding Agreement
Organization And Nature Of Operations [Line Items]
Price per share | $ / shares	$ 9.3
Strategic Storage Advisor IV, LLC
Organization And Nature Of Operations [Line Items]
Sale of common shares to advisor | $							$ 1,000
Advisor purchased initial investment in operating partnership | $							$ 1,000
Smartstop Storage Advisors LLC.
Organization And Nature Of Operations [Line Items]
Investment by affiliate in exchange for additional limited partnership interests | $						$ 1,000
Smartstop OP, L.P
Organization And Nature Of Operations [Line Items]
Equity ownership percentage								2.00%
Advisor purchased a limited partnership interest in Operating Partnership, number of partnership units					549,451
Initial capital contribution | $					$ 5,000,000
Strategic Storage Operating Partnership VI, L.P.
Organization And Nature Of Operations [Line Items]
Equity ownership percentage								98.00%
SmartCentres
Organization And Nature Of Operations [Line Items]
Equity ownership percentage								50.00%