Number of stores purchased.

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Percentage Of Gain Recognized On Disposition

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Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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The cash inflow associated with the sale of other real estate not otherwise defined in the taxonomy.

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-Name Accounting Standards Codification
-Topic 230
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Property Acquisitions and Dispositions - Additional Information (Details) $ in Thousands					6 Months Ended
	Apr. 11, 2019 USD ($)	Aug. 16, 2018 USD ($)	Nov. 30, 2017 USD ($) store	Sep. 13, 2017 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2019
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Disposal of New York Store
Property Acquisitions [Line Items]
Proceeds from sale of real estate assets, investments in real estate ventures and other assets	$ 11,272
Gain (loss) on disposition of assets	$ 1,205
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Disposal of California Store
Property Acquisitions [Line Items]
Proceeds from sale of real estate assets, investments in real estate ventures and other assets		$ 40,235
Gain (loss) on disposition of assets		$ 30,671
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Disposal of 36 Stores Located in Various States
Property Acquisitions [Line Items]
Proceeds from sale of real estate assets, investments in real estate ventures and other assets			$ 295,000
Gain (loss) on disposition of assets			$ 118,776
Number of stores sold \| store			36
Percentage of gain received on disposition			90.00%
Percentage of gain deferred on disposition			10.00%
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Disposal of New York Land
Property Acquisitions [Line Items]
Proceeds from sale of real estate assets, investments in real estate ventures and other assets				$ 19,000
Gain (loss) on disposition of assets					$ (3,500)
Storage Portfolio II JV LLC
Property Acquisitions [Line Items]
Equity ownership %			10.00%			10.00%