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Note 3 - Operating Property Activities (Details Textual) - USD ($) $ in Millions | 6 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018
Proceeds from Delayed Tax Exempt Exchange | $ 31.0 |
Real Estate Revenue From Acquisitions During Period | 0.6 |
Impairment of Real Estate | $ 21.6 | $ 30.5

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- Definition The amount of real estate revenue derived from properties acquired during the period and is included in the company's income statement. + References No definition available. + Details
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Namespace Prefix: | kim_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The charge against earnings in the period to reduce the carrying amount of real property to fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 + Details
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Balance Type: | debit
Period Type: | duration

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- Definition Cash inflow related to a property which is traded for the promise to provide a replacement like-kind property in the near future also known as a tax deferred exempt exchange. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
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Period Type: | duration