Equity Method Investment, Number Of Properties

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- Definition

Number Of Equity Method Investments, Not Significant For Separate Disclosure

+ References

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- Definition

Represents the number of real estate properties acquired.

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- Definition

Payments To Acquire Assets, Gross

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- Definition

Real Estate Investments, Unconsolidated Real Estate and Other Joint Ventures, Net Of Distributions

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- Definition

The percentage of excess profit participation in unconsolidated joint ventures.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586

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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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Investments in Unconsolidated Real Estate Ventures - Schedule of Investments in Unconsolidated Real Estate Ventures (Details) $ in Thousands		2 Months Ended	3 Months Ended								12 Months Ended
	Apr. 30, 2018 USD ($) store	Feb. 26, 2019 USD ($) store	Dec. 31, 2018 USD ($) store property joint_venture	Sep. 30, 2018 USD ($) store	Jun. 30, 2018 USD ($) store	Mar. 31, 2018 USD ($) store	Dec. 31, 2017 USD ($) store	Sep. 30, 2017 USD ($) store	Jun. 30, 2017 USD ($) store	Mar. 31, 2017 USD ($) store	Dec. 31, 2018 USD ($) store property joint_venture	Dec. 31, 2017 USD ($) store	Nov. 30, 2017	Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			229								229
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ 80,129				$ 70,091				$ 80,129	$ 70,091
Number of joint ventures, not significant for separate disclosure \| joint_venture			17								17
Number of stores acquired \| store			6	6	17	5	37	4	3	2	34	46
Cash paid to acquire properties			$ 74,868	$ 71,989	$ 148,650	$ 70,171	$ 502,845	$ 29,919	$ 16,608	$ 25,541	$ 365,678	$ 574,913
Loan assumed			$ 0	$ 0	$ 87,500	$ 0	$ 14,592	$ 0	$ 9,463	$ 0	$ 87,500	$ 24,055
Minimum
Schedule of Equity Method Investments [Line Items]
Equity Ownership %			10.00%				10.00%				10.00%	10.00%		20.00%
Maximum
Schedule of Equity Method Investments [Line Items]
Equity Ownership %			50.00%				25.00%				50.00%	25.00%		50.00%
WICNN JV LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			7								7
Equity Ownership %			10.00%								10.00%
Excess Profit %			25.00%								25.00%
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ 26,885				$ 0				$ 26,885	$ 0
VRS Self Storage, LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			16								16
Equity Ownership %			45.00%								45.00%
Excess Profit %			54.00%								54.00%
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ 18,281				19,467				$ 18,281	19,467
PRISA Self Storage LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			85								85
Equity Ownership %			4.00%								4.00%
Excess Profit %			4.00%								4.00%
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ 9,334				9,638				$ 9,334	9,638
Alan Jathoo JV LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			9								9
Equity Ownership %			10.00%								10.00%
Excess Profit %			10.00%								10.00%
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ 8,180				0				$ 8,180	0
Extra Space West Two LLC (1)
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			5								5
Equity Ownership %			5.00%								5.00%
Excess Profit %			40.00%								40.00%
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ 3,818				3,939				$ 3,818	3,939
ESS Bristol Investments LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			7								7
Equity Ownership %			10.00%								10.00%
Excess Profit %			28.00%								28.00%
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ 2,331				1,258				$ 2,331	1,258
WCOT Self Storage LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			0								0
Equity Ownership %			5.00%								5.00%
Excess Profit %			20.00%								20.00%
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ 0				(357)				$ 0	(357)
Number of stores acquired \| store	14
Cash paid to acquire properties	$ 115,797
Loan assumed	$ 87,500
Extra Space West One LLC (1)
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			7								7
Equity Ownership %			5.00%								5.00%
Excess Profit %			40.00%								40.00%
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ (1,038)				(900)				$ (1,038)	(900)
Extra Space Northern Properties Six LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			10								10
Equity Ownership %			10.00%								10.00%
Excess Profit %			35.00%								35.00%
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ (1,700)				(1,279)				$ (1,700)	(1,279)
Storage Portfolio II JV LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			36								36
Equity Ownership %			10.00%								10.00%		10.00%
Excess Profit %			30.00%								30.00%
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ (4,233)				(3,140)				$ (4,233)	(3,140)
Storage Portfolio I LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			24								24
Equity Ownership %			34.00%								34.00%
Excess Profit %			49.00%								49.00%
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ (38,129)				11,495				$ (38,129)	11,495
Other minority owned stores
Schedule of Equity Method Investments [Line Items]
Number of Stores \| property			23								23
Net Investments in and Cash distributions in unconsolidated real estate ventures			$ 56,400				$ 29,970				$ 56,400	$ 29,970
Other minority owned stores \| Minimum
Schedule of Equity Method Investments [Line Items]
Equity Ownership %			10.00%								10.00%
Excess Profit %			19.00%								19.00%
Other minority owned stores \| Maximum
Schedule of Equity Method Investments [Line Items]
Equity Ownership %			50.00%								50.00%
Excess Profit %			50.00%								50.00%
Extra Space West One LLC and Extra Space Two LLC \| Subsequent Event
Schedule of Equity Method Investments [Line Items]
Number of stores acquired \| store		12
Cash paid to acquire properties		$ 172,515
Loan assumed		$ 17,157