Number of Real Estate Properties Reclassified to Held to Sale

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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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.

+ References

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

No definition available.

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- Definition

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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- Definition

Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19-26)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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Investments in Real Estate (Schedule of Real Estate Property Acquisitions) (Details) $ in Thousands													9 Months Ended
	Sep. 21, 2018 USD ($)	Sep. 07, 2018 USD ($)	Jul. 17, 2018 USD ($)	Jul. 11, 2018 USD ($)	Jun. 19, 2018 USD ($)	May 31, 2018 USD ($)	May 22, 2018 USD ($)	May 03, 2018 USD ($)	Apr. 19, 2018 USD ($)	Mar. 14, 2018 USD ($)	Feb. 09, 2018 USD ($)	Jan. 25, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 property	Dec. 31, 2017 USD ($) property
Business Acquisition [Line Items]
Payment to acquire real estate													$ 112,300
Assets													21,462,110		$ 21,404,345
Liabilities													10,681,095		$ 10,300,993
Gross proceeds													291,700
Gain (loss) on sale of property													$ 80,400
Held-for-sale
Business Acquisition [Line Items]
Number of additional properties \| property														4	8
Assets															$ 139,500
Liabilities															$ 5,000
200 Quannapowitt Parkway
Business Acquisition [Line Items]
Gross proceeds												$ 15,000
Gain (loss) on sale of property												$ (400)
34551 Ardenwood Boulevard
Business Acquisition [Line Items]
Gross proceeds											$ 73,300
Gain (loss) on sale of property											$ 25,300
3065 Gold Camp Drive
Business Acquisition [Line Items]
Gross proceeds										$ 14,200
Gain (loss) on sale of property										5,400
11085 Sun Center Drive
Business Acquisition [Line Items]
Gross proceeds										36,800
Gain (loss) on sale of property										$ 9,100
Austin Portfolio
Business Acquisition [Line Items]
Gross proceeds									$ 47,600
Gain (loss) on sale of property									$ 12,000
2010 East Centennial Circle
Business Acquisition [Line Items]
Gross proceeds							$ 5,500
Gain (loss) on sale of property							$ (500)
1125 Energy Park Drive
Business Acquisition [Line Items]
Gross proceeds						$ 7,000
Gain (loss) on sale of property						$ 2,800
360 Spear Street
Business Acquisition [Line Items]
Gross proceeds	$ 92,300
Gain (loss) on sale of property	$ 26,700
10000-10006 Godwin Drive
Business Acquisition [Line Items]
Payment to acquire real estate								$ 16,500
2825-2845 Lafayette Street
Business Acquisition [Line Items]
Payment to acquire real estate					$ 55,500
9905 Godwin Drive
Business Acquisition [Line Items]
Payment to acquire real estate				$ 5,800
Pacific Boulevard and S. Sterling Boulevard
Business Acquisition [Line Items]
Payment to acquire real estate			$ 26,800
160 Lockwood Road
Business Acquisition [Line Items]
Payment to acquire real estate		$ 7,700