Subsequent Events - Additional Information (Detail) - USD ($)			9 Months Ended
	Nov. 06, 2025	Oct. 28, 2025	Sep. 30, 2025	Sep. 30, 2024
Subsequent Event [Line Items]
Gross proceeds from issuance of common stock			$ 15,367,192	$ 27,817,484
Subsequent Event \| Class P Common Stock
Subsequent Event [Line Items]
Common stock issued in connection with offering	11,700,000
Gross proceeds from issuance of common stock	$ 111,300,000
Subsequent Event \| Class A Common Stock
Subsequent Event [Line Items]
Common stock issued in connection with offering	3,200,000
Gross proceeds from issuance of common stock	$ 32,600,000
Subsequent Event \| Class T Common Stock
Subsequent Event [Line Items]
Common stock issued in connection with offering	5,200,000
Gross proceeds from issuance of common stock	$ 51,400,000
Subsequent Event \| Class W Common Stock
Subsequent Event [Line Items]
Common stock issued in connection with offering	700,000
Gross proceeds from issuance of common stock	$ 6,800,000
Subsequent Event \| Class Y Common Stock
Subsequent Event [Line Items]
Common stock issued in connection with offering	5,400,000
Gross proceeds from issuance of common stock	$ 52,400,000
Subsequent Event \| Class Z Common Stock
Subsequent Event [Line Items]
Common stock issued in connection with offering	600,000
Gross proceeds from issuance of common stock	$ 5,600,000
Subsequent Event \| Series D Preferred Units
Subsequent Event [Line Items]
Issuance of preferred units		120,000
Consideration		$ 3,000,000

Strategic Storage Trust VI, Inc. 10-Q