Area of a real estate property.

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Amount of expense recognized from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments), awarded to key employees or individuals. Excludes amount related to plans that cover generally all employees (for example, but not limited to, qualified pension plans).

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The per share price that the individual must pay to acquire shares under the deferred compensation arrangement.

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Minimum period when individual is required to perform service to be fully vested under deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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-Topic 944
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(10))
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-Name Accounting Standards Codification
-Section 45
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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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-Topic 825
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-Topic 323
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-Section 50
-Paragraph 3
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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

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- Definition

Cash received as payments for insurance premiums during the current period.

+ References

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Cash received from licensees for license fees during the current period.

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- Definition

Cash received for rents during the current period.

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- Definition

Amount of transactions with related party during the financial reporting period.

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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Related Party Transactions (Details) $ / shares in Units, $ in Thousands, ft² in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026 USD ($) property	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($) property $ / shares	Sep. 30, 2025 USD ($)	Sep. 01, 2026 ft² property
Related Party Transaction [Line Items]
Number of Properties \| property	28		28
Proceeds from insurance received amount	$ 400	$ 600	$ 1,400	$ 1,600
Cash distribution received			25,584	1,823
Proceeds from tenant received			$ 4,700
PS Canada Holding , LLC
Related Party Transaction [Line Items]
Number of Properties \| property					68
Area of real estate property \| ft²					5.3
OP Options
Related Party Transaction [Line Items]
Exercise price (in dollars per share) \| $ / shares			$ 350
Requisite service period (in years)			10 years
Shurgard Self Storage Sa
Related Party Transaction [Line Items]
Ownership interest (in percent)	35.00%		35.00%
License fees received			$ 4,000	3,700
Shurgard Self Storage Sa \| Trademark License
Related Party Transaction [Line Items]
Cash distribution received			1,400	$ 1,300
Mr. Mitra \| OP Options
Related Party Transaction [Line Items]
Annual equity award			25,000
Mr. Havner \| OP Options
Related Party Transaction [Line Items]
Annual equity award			5,000
Related Party \| PS Canada Holding , LLC
Related Party Transaction [Line Items]
Number of Properties \| property					68
Related Party \| Property Management And Asset Management Fees
Related Party Transaction [Line Items]
Property management and asset management fees amount			$ 9,400
Related Party \| Tamara Hughes Gustavson \| PS Canada Holding , LLC
Related Party Transaction [Line Items]
Ownership interest of noncontrolling owners (less than) (in percent)					0.10%