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Note 6 - Impairments (Details Textual) $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Five Impaired Properties [Member] |  |  |
Impairment of Real Estate | $ 19.2 |  |
Impairment of Real Estate, Noncontrolling Interest | $ 16.0 |  |
Number of Real Estate Properties Impaired | 5 |  |
Equity Method Investments [Member] |  |  |
Impairment of Real Estate | $ 4.6 | $ 2.9 | $ 0.8

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- Definition The amount of impairment of real estate from noncontrolling interest. + References No definition available. + Details
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Namespace Prefix: | kim_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The number of impaired real estate properties owned. + References No definition available. + Details
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Namespace Prefix: | kim_
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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 https://asc.fasb.org/extlink&oid=126954810&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 https://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 + Details
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- Details
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- Details
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