Note 4 - Investments In and Advances to Real Estate Joint Ventures - Investment Details (Details) - USD ($) $ in Millions		Jun. 30, 2022	Dec. 31, 2021
Kim Pru and Kim Pru II [Member]
Average ownership interest		15.00%
The company's investment		$ 153.4	$ 163.0
Kimco Income Fund [Member]
Average ownership interest	[1]	52.10%
The company's investment	[1]	$ 271.9	186.0
CPP [Member]
Average ownership interest		55.00%
The company's investment		$ 178.7	165.1
Other Institutional Joint Ventures [Member]
The company's investment		268.4	281.8
Other Joint Venture Programs [Member]
The company's investment		211.1	211.0
All Equity Method Investments [Member]
The company's investment	[2]	$ 1,083.5	$ 1,006.9

[1] During the six months ended June 30, 2022, the Company purchased additional ownership interests for $55.0 million. Also, during the six months ended June 30, 2022, the Company purchased the General Partner ownership interest from Milton Cooper, Chairman of the Board for the Company for $125,000. There was no change in control as a result of these transactions.

[2] Representing 114 property interests and 23.1 million square feet of GLA, as of June 30, 2022, and 120 property interests and 24.7 million square feet of GLA, as of December 31, 2021.