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

Represents the amount of sale price for the entity's equity method investment.

No definition available.

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- Definition

The amount of floor space available to be rented in a commercial property.

+ References

No definition available.

+ Details

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- Definition

Represents the number of real estate property interests disposed of or transferred.

+ References

No definition available.

+ Details

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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

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- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

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).

+ References

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 https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

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- Definition

The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760

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