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Note 4 - Investments in and Advances to Real Estate Joint Ventures (Details Textual) ft² in Millions, $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2022 USD ($) ft² | Jun. 30, 2021 USD ($) | Dec. 31, 2021 ft²
Prudential Investment Program [Member] |  |  |
Tangible Asset Impairment Charges, Total | $ 15.1 |  |
All Equity Method Investments [Member] |  |  |
Number of Real Estate Properties | 114 |  | 120
Gross Leasable Area (Square Foot) | ft² | 23.1 |  | 24.7
Kimco Income Fund [Member] |  |  |
Payments to Acquire Interest in Subsidiaries and Affiliates, Total | $ 55.0 |  |
Kimco Income Fund [Member] | Board of Directors Chairman [Member] |  |  |
Payments to Acquire Interest in Subsidiaries and Affiliates, Total | 0.1 |  |
Prudential Investment Program [Member] |  |  |
Tangible Asset Impairment Charges, Total | $ 2.3 |  |
Real Estate Joint Ventures [Member] | Operating Properties [Member] |  |  |
Number of Real Estate Properties, Interest Disposed of or Transferred | 6 | 2 |
Equity Method Investment, Sales Price | $ 268.6 | $ 53.7 |
Equity Method Investment, Realized Gain (Loss) on Disposal | $ 29.8 | $ 4.2 |

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- Definition Amount of gain (loss) on sale or disposal of an equity method investment. + 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 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(7)(c)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(9)(a)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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