Note 7 - Investment In and Advances to Real Estate Joint Ventures - Investment Details (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
The company's investment		$ 18,457,242	$ 18,052,271	$ 12,068,827	$ 11,929,276
Kim Pru and Kim Pru II [Member]
Average ownership interest		15.00%
The company's investment		$ 153,600	163,000
Kimco Income Fund [Member]
Average ownership interest	[1]	52.10%
The company's investment	[1]	$ 281,500	186,000
CPP [Member]
Average ownership interest		55.00%
The company's investment		$ 190,800	165,100
Other Institutional Joint Ventures [Member]
The company's investment	[2]	256,800	281,800
Other Joint Venture Programs [Member]
The company's investment		208,900	211,000
All Equity Method Investments [Member]
The company's investment	[3]	$ 1,091,600	$ 1,006,900

[1] During 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] During 2021, the Company entered into a new joint venture with BREIT in which it contributed six properties for a gross sales price of $425.8 million. See Footnote 5 of the Notes to Consolidated Financial Statements for the operating properties disposed by the Company.

[3] Representing 111 property interests and 22.4 million square feet of GLA, as of December 31, 2022, and 120 property interests and 24.7 million square feet of GLA, as of December 31, 2021.