Business acquisition remaining percentage of voting interests acquired

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- Definition

Number of development real estate properties.

+ References

No definition available.

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- Definition

Number of land parcels developed into self storage facilities.

+ References

No definition available.

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- Definition

Number of operating real estate properties.

+ References

No definition available.

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- Definition

Number of operating self storage property.

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- Definition

Number of real estate ventures.

+ References

No definition available.

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- Definition

Number Of Self Storage Facilities

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No definition available.

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- Definition

Number of self storage facilities purchased.

+ References

No definition available.

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- Definition

Number of self storage real estate joint ventures.

+ References

No definition available.

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- Definition

Number of self storage units.

+ References

No definition available.

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- Definition

Number of shares exchanged in connection with merger.

+ References

No definition available.

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- Definition

Number of states located for self storage facilities.

+ References

No definition available.

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- Definition

The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties.

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- Definition

Value of input used to measure alternative investment.

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-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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- Definition

Description of basis for conversion of convertible common stock.

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Face amount or stated value per share of common stock.

+ References

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- Definition

Fair value of equity issued in a business combination.

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- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

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- Definition

Net rentable area for properties owned.

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No definition available.

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- Definition

Number of shares of stock issued during the period pursuant to acquisitions.

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Real Estate Facilities - Additional Information (Detail) $ / shares in Units, shares in Millions, $ in Millions								3 Months Ended
	Mar. 01, 2023 RealEstateVenture	Jun. 01, 2022 USD ($) ft² StorageFacility StorageProperty State Landparcel RealEstateVenture $ / shares	May 25, 2022 USD ($)	May 25, 2022 CAD ($)	Dec. 30, 2021 StorageFacility	Mar. 17, 2021 ft² StorageFacility RealEstateVenture State StorageUnit shares	Nov. 10, 2020 RealEstateVenture	Mar. 31, 2023 USD ($) RealEstateVenture State Property StorageFacility $ / shares	Dec. 31, 2022 $ / shares	Mar. 10, 2021 USD ($)
Business Acquisition [Line Items]
Number of self storage facilities \| StorageFacility					2			153
Number of self storage facilities purchased \| StorageFacility								0
Number of states located for self storage facilities \| State								19
Consideration transferred \| $								$ 33,400,000
SmartStop OP
Business Acquisition [Line Items]
Investment \| $										$ 5,000,000.0
Minority and Marketability Discount
Business Acquisition [Line Items]
Alternative investment, measurement input		0.06
Canada
Business Acquisition [Line Items]
Number of self storage units \| RealEstateVenture		7,740
Consideration transferred \| $								$ 7,700,000
Class A Common stock
Business Acquisition [Line Items]
Common Stock, Par or Stated Value Per Share \| $ / shares								$ 0.001	$ 0.001
SST IV Merger Agreement
Business Acquisition [Line Items]
Number of self storage facilities \| StorageFacility						24
Number of states located for self storage facilities \| State						9
Number of self storage units \| StorageUnit						18,000
Net rentable area, primarily self storage space \| ft²						2,000,000.0
Percentage of voting membership interest						50.00%
Number of operating self storage facilities \| Property								3
SST IV Merger Agreement \| Canada
Business Acquisition [Line Items]
Number of self storage real estate joint ventures \| RealEstateVenture							6
Number of operating self storage facilities \| StorageFacility						3
Number of parcels of land in various stages of development into self storage facilities \| StorageFacility						3
Number of unconsolidated real estate ventures \| RealEstateVenture						6
SST IV Merger Agreement \| SST IV Common Stock
Business Acquisition [Line Items]
Number of shares exchanged in connection with merger \| shares						10.6
SST IV Merger Agreement \| Class A Common stock
Business Acquisition [Line Items]
Issuance of common stock in connection with SST IV Merger (in shares) \| shares						23.1
Regent Property [ Member]
Business Acquisition [Line Items]
Consideration transferred			$ 2,700,000	$ 3.5
SSGT II Merger Agreement
Business Acquisition [Line Items]
Conversion of right to receive shares, description		converted into the right to receive 0.9118 shares of our Class A Shares
Number of self storage facilities \| StorageFacility		10
Number of states located for self storage facilities \| State		7
Percentage of voting membership interest		50.00%
Number of operating self storage facilities \| Property								1
Acquisition Costs, Period Cost \| $		$ 2,000,000.0
Consideration transferred \| $		$ 261,158,513
Common Stock, Par or Stated Value Per Share \| $ / shares		$ 0.001
Number of operating self storage property \| StorageProperty		1
Number of land parcels developed into self storage facilities \| Landparcel		2
Remaining percentage of membership interest		50.00%
SSGT II Merger Agreement \| Canada
Business Acquisition [Line Items]
Number of self storage real estate joint ventures \| RealEstateVenture	3
Number of operating self storage facilities \| RealEstateVenture								2
Number of parcels of land in various stages of development into self storage facilities \| RealEstateVenture								1
Number of land parcels developed into self storage facilities \| Landparcel		1
SSGT II Merger Agreement \| Class A Common stock
Business Acquisition [Line Items]
Common stock issued \| $		$ 11,500,000
Acquisition of Self Storage Facility
Business Acquisition [Line Items]
Net rentable area, primarily self storage space \| ft²		853,900