Note 5 - Investments In and Advances to Real Estate Joint Ventures - Investment Details (Details) - USD ($) $ in Millions		Sep. 30, 2022	Dec. 31, 2021
Kim Pru and Kim Pru II [Member]
Average ownership interest		15.00%
The company's investment		$ 153.8	$ 163.0
Kimco Income Fund [Member]
Average ownership interest	[1]	52.10%
The company's investment	[1]	$ 281.7	186.0
CPP [Member]
Average ownership interest		55.00%
The company's investment		$ 185.7	165.1
Other Institutional Joint Ventures [Member]
The company's investment		260.4	281.8
Other Joint Venture Programs [Member]
The company's investment		210.8	211.0
All Equity Method Investments [Member]
The company's investment	[2]	$ 1,092.4	$ 1,006.9

[1] During the nine months ended September 30, 2022, the Company purchased additional ownership interests for $55.1 million, including the General Partner's ownership interest from Milton Cooper, Executive Chairman of the Board of Directors of the Company, for $0.1 million. There was no change in control as a result of these transactions.

[2] Representing 112 property interests and 22.6 million square feet of GLA, as of September 30, 2022, and 120 property interests and 24.7 million square feet of GLA, as of December 31, 2021.