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Aggregate costs to develop new self-storage facilities and expand existing self-storage facilities.

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Increase (Decrease) Of Equity Method Investments

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Net Rentable Area Acquired

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- Definition

Number Of Operating Self Storage Facilities

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- Definition

Number Of Properties Acquired

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No definition available.

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- Definition

Number Of Sites In Commercial Interest Acquisition

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- Definition

Schedule Of Real Estate Facilities [Line Items]

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- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Fair value at acquisition-date of the assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interests issued by the acquirer, including but not limited to, instruments or interests issued or issuable in consideration for the business combination.

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- Definition

The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

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The cash inflow from the sale of real estate held-for-investment and real estate joint ventures.

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Amount of real estate investments, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; (7) other real estate investments; (8) real estate joint ventures; and (9) unconsolidated real estate and other joint ventures not separately presented.

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Real Estate Facilities (Narrative) (Details) $ in Thousands, ft² in Millions		3 Months Ended		9 Months Ended
	Jul. 08, 2022 USD ($) site property	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) ft² storage_facility	Sep. 30, 2021 USD ($)
Schedule Of Real Estate Facilities [Line Items]
Payments to acquire real estate				$ 529,357	$ 2,845,284
Proceeds from real estate and real estate joint ventures				1,543	16,070
Gain on sale of real estate		$ 1,503	$ 279	1,503	$ 13,683
Disposal of Real Estate Facilities
Schedule Of Real Estate Facilities [Line Items]
Gain on sale of real estate				$ 1,500
Acquisition of Self-Storage Facilities Other Investments
Schedule Of Real Estate Facilities [Line Items]
Number of operating self-storage facilities \| storage_facility				44
Net rentable area acquired \| ft²				3.2
Total cost of acquisition				$ 501,900
Payments to acquire real estate				482,000
Issuance of partnership units				19,900
Payments to acquire intangible assets				14,400
Newly Developed and Expansion Projects \| Completed Developed and Expansion Project
Schedule Of Real Estate Facilities [Line Items]
Aggregate costs to develop and expand				$ 126,000
Additional net rentable square feet \| ft²				0.9
Commercial Interests
Schedule Of Real Estate Facilities [Line Items]
Total cost of acquisition	$ 47,300
Number of properties acquired \| property	5
Number of sites in commercial interest acquisition \| site	3
Real estate investments, net	$ 27,000
Intangible assets, gross (excluding goodwill)	700
Increase of equity investment	$ 19,600