Organization - Additional Information (Detail)								1 Months Ended	12 Months Ended
	Aug. 07, 2024 $ / shares shares	Nov. 01, 2023 $ / shares shares	May 01, 2023 USD ($)	Jan. 30, 2023 USD ($) $ / shares shares	Mar. 10, 2021 USD ($) shares	Feb. 26, 2021 USD ($)	Jan. 15, 2021 USD ($)	May 31, 2023 shares	Dec. 31, 2024 USD ($) OperatingSelfStorageProperty UnconsolidatedRealEstateVenture $ / shares shares	Dec. 31, 2023 USD ($) shares	Dec. 31, 2022 USD ($) shares	May 02, 2023 USD ($)
Organization And Nature Of Operations [Line Items]
Units converted | shares	0
Number of operating self storage properties owned | OperatingSelfStorageProperty									24
Percentage of non-voting economic interest owned by affiliates						10.00%			17.50%
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 | $									3,634,282	$ 4,387,423	$ 9,226,517
Sponsor Funding Agreement
Organization And Nature Of Operations [Line Items]
Estimated per share NAV | $ / shares	$ 10
Purchase Agreement
Organization And Nature Of Operations [Line Items]
Aggregate value of shares committed to purchase | $			150,000,000
Series C Units
Organization And Nature Of Operations [Line Items]
Conversion of units | $ / shares		$ 10
Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Gross proceeds from issuance of common stock | $									$ 13,000,000
Class A Common Stock
Organization And Nature Of Operations [Line Items]
Estimated per share NAV | $ / shares	$ 10
Units converted | shares	0	0
One time stock dividend | $ / shares		$ 0.11075
Class A Common Stock | Sponsor Funding Agreement
Organization And Nature Of Operations [Line Items]
Estimated per share NAV | $ / shares		10
Class A Common Stock | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering | shares										1,180,172	1,755,190
Class A Common Stock | Series C Units
Organization And Nature Of Operations [Line Items]
Conversion of units | $ / shares		10
Class A Common Stock | Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering | shares									200,000
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 | shares									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
Estimated per share NAV | $ / shares	$ 10
Class P Common Stock | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering | shares											5,539,950
Class P Common Stock | Series C Units
Organization And Nature Of Operations [Line Items]
Conversion of units | $ / shares		10
Class P Common Stock | Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering | shares									900,000
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 | shares									10,600,000
Class T Common Stock
Organization And Nature Of Operations [Line Items]
Estimated per share NAV | $ / shares	10
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 | shares										1,812,471	2,998,808
Class T Common Stock | Series C Units
Organization And Nature Of Operations [Line Items]
Conversion of units | $ / shares		10
Class T Common Stock | Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering | shares									200,000
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 | shares									4,800,000
Class W Common Stock
Organization And Nature Of Operations [Line Items]
Estimated per share NAV | $ / shares	10
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 | shares										418,085	246,436
Class W Common Stock | Series C Units
Organization And Nature Of Operations [Line Items]
Conversion of units | $ / shares		10
Class W Common Stock | Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering | shares									35,600
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 | $									$ 6,200,000
Class W Common Stock | Private Offering | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering | shares									700,000
Series A Cumulative Redeemable Preferred Units
Organization And Nature Of Operations [Line Items]
Issuance of preferred units | shares				600,000
Series A Cumulative Redeemable Preferred Units | Preferred Unit Purchase Agreement
Organization And Nature Of Operations [Line Items]
Issuance of preferred units | shares				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 | shares								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]
Estimated per share NAV | $ / shares	10
Reclassification of shares | shares		200,000,000
Price per share | $ / shares		$ 9.3
Class Y Common Stock | Sponsor Funding Agreement
Organization And Nature Of Operations [Line Items]
Percentage of upfront sales commission		3.00%
Percentage of upfront dealer manager fee		3.00%
Class Y Common Stock | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering | shares									3,604,009	382,653
Class Y Common Stock | Series C Units
Organization And Nature Of Operations [Line Items]
Conversion of units | $ / shares		$ 10
Class Y Common Stock | Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering | shares									63,200
Class Y Common Stock | Private Offering
Organization And Nature Of Operations [Line Items]
Gross proceeds from issuance of common stock | $									$ 38,000,000
Class Y Common Stock | Private Offering | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering | shares									4,000,000
Class Z Common Stock
Organization And Nature Of Operations [Line Items]
Estimated per share NAV | $ / shares	$ 10
Reclassification of shares | shares		70,000,000
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 | shares									306,593	36,559
Class Z Common Stock | Series C Units
Organization And Nature Of Operations [Line Items]
Conversion of units | $ / shares		10
Class Z Common Stock | Distribution Reinvestment Plan
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering | shares									3,200
Class Z Common Stock | Private Offering
Organization And Nature Of Operations [Line Items]
Gross proceeds from issuance of common stock | $									$ 3,300,000
Class Z Common Stock | Private Offering | Common Stock
Organization And Nature Of Operations [Line Items]
Common stock issued in connection with offering | shares									300,000
Class Y Shares and Class Z Shares | Sponsor Funding Agreement
Organization And Nature Of Operations [Line Items]
Price per share | $ / shares		$ 9.3							$ 10
Percentage of organization and offering expenses		1.00%
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 | shares					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%