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Organization and Significant Accounting Policies Schedule of Variable Interest Entities (Details) $ in Thousands | Mar. 31, 2020 USD ($) retail_shopping_center | Dec. 31, 2019 USD ($)
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Variable Interest Entity, Consolidated, Carrying Amount, Assets | $ 11,568,311 | $ 11,132,253
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities | 5,293,076 | 4,842,292
Noncontrolling Interest in Variable Interest Entity | 30,436 | 30,655
Variable Interest Entity, Primary Beneficiary [Member] |  |
Variable Interest Entity [Line Items] |  |
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities | 15,557 | 17,740
Real Estate [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |
Variable Interest Entity [Line Items] |  |
Variable Interest Entity, Consolidated, Carrying Amount, Assets | 136,017 | 325,464
Cash and Cash Equivalents [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |
Variable Interest Entity [Line Items] |  |
Variable Interest Entity, Consolidated, Carrying Amount, Assets | $ 4,055 | $ 57,269
Partially Owned Properties [Member] |  |
Variable Interest Entity [Line Items] |  |
Number of real estate properties | retail_shopping_center | 126 |
Consolidated Properties [Member] |  |
Variable Interest Entity [Line Items] |  |
Number of real estate properties | retail_shopping_center | 11 |

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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://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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=119400593&loc=d3e572229-122910 + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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- Definition Portion of equity (net assets) in a variable interest entity (VIE) not attributable, directly or indirectly, to the parent entity. That is, this is the portion of equity in a VIE that is attributable to the noncontrolling interest (previously referred to as minority interest). + References No definition available. + Details
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