Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

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-Publisher FASB
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-Topic 323
-SubTopic 10
-Section 50
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-Subparagraph (a)(3)
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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.

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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/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Publisher FASB
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-Topic 360
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2443-110228

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The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585

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The cash inflow associated with the deconsolidation of a previously consolidated subsidiary or sale of an entity that is related to it but not strictly controlled.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07.1(c))
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-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

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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.

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Represents the adjustment to revenue related to potentially uncollectible revenues and disputed amounts.

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Represents the Entity's share of unconsolidated joint ventures' adjustment to revenue related to potentially uncollectible revenues and disputed amounts

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- Definition

Gross purchase price 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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Gross cash received from the sale of real estate that is held for investment, that is, it is part of an investing activity during the period.

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The number of real estate properties sold that the Entity had ownership interest in.

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The number of real estate properties, buildings or undeveloped land parcels sold during the period.

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Investment In Real Estate Joint Ventures And Partnerships (Narrative) (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Jul. 31, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) property Center	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Net basis differentials for equity method investments		$ 11,100		$ 11,100		$ 9,000
Number of centers sold \| property				5
Gain on sale of property				$ 31,742	$ 143,963
Real estate joint ventures and partnerships - Investments				8,280	68,200
Proceeds from sale and disposition of property				98,300
Gross purchase price to acquire center				$ 46,000
Minimum [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage in joint ventures		20.00%		20.00%		20.00%
Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage in joint ventures		90.00%		90.00%		90.00%
COVID-19 [Member]
Schedule of Equity Method Investments [Line Items]
Adjustment to revenue related to potentially uncollectible revenues and disputed amounts		$ 1,400		$ 30,100
Entity's share of the adjustment to revenue related to potentially uncollectible revenues and disputed amounts				2,000
Straight Line Rent Receivables [Member]
Schedule of Equity Method Investments [Line Items]
Adjustment to revenue related to potentially uncollectible revenues and disputed amounts		(300)		$ 12,100
Entity's share of the adjustment to revenue related to potentially uncollectible revenues and disputed amounts		$ 700
Disposal Group, Multiple Centers [Member]
Schedule of Equity Method Investments [Line Items]
Number of centers sold \| Center				2
Number of centers sold the Entity had interest in \| Center				2
Proceeds From divestitures				$ 148,300
Gain on sale of property				$ 23,500
Disposal Group, Multiple Centers [Member] \| Minimum [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage in joint ventures		20.00%		20.00%
Disposal Group, Multiple Centers [Member] \| Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage in joint ventures		50.00%		50.00%
Joint Ventures and Limited Partnerships
Schedule of Equity Method Investments [Line Items]
Ownership percentage in joint ventures	51.00%
Joint venture fee income		$ 1,300	$ 1,900	$ 4,000	$ 4,800
Gain on sale of property						$ 1,100
Proceeds from sale and disposition of property						$ 2,300
Gross purchase price to acquire center	$ 52,600
Joint Ventures and Limited Partnerships \| COVID-19 [Member]
Schedule of Equity Method Investments [Line Items]
Adjustment to revenue related to potentially uncollectible revenues and disputed amounts				5,900
Joint Ventures and Limited Partnerships \| Straight Line Rent Receivables [Member]
Schedule of Equity Method Investments [Line Items]
Adjustment to revenue related to potentially uncollectible revenues and disputed amounts				$ 2,600
Investment, Mixed-Use New Development [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage in joint ventures		90.00%		90.00%		90.00%
Real estate joint ventures and partnerships - Investments				$ 8,300		$ 47,600