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Investments in and Advances to Real Estate Joint Ventures - Schedule of Equity Method Investments (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Prudential Investment Program [Member]    
Schedule of Equity Method Investments [Line Items]    
Noncontrolling Ownership Interest 15.00%  
The Company's Investment $ 119.6 $ 120.1
Kimco Income Opportunity Portfolio ("KIR") [Member]    
Schedule of Equity Method Investments [Line Items]    
Noncontrolling Ownership Interest 52.10%  
The Company's Investment $ 285.2 287.2
R2G Venture LLC [Member]    
Schedule of Equity Method Investments [Line Items]    
Noncontrolling Ownership Interest 51.50%  
The Company's Investment $ 390.5 401.2
CPP [Member]    
Schedule of Equity Method Investments [Line Items]    
Noncontrolling Ownership Interest 55.00%  
Other Institutional Joint Ventures [Member]    
Schedule of Equity Method Investments [Line Items]    
The Company's Investment [1] $ 250.3 438.3
Other Joint Venture Programs [Member]    
Schedule of Equity Method Investments [Line Items]    
The Company's Investment 202.9 207.3
All Equity Method Investments [Member]    
Schedule of Equity Method Investments [Line Items]    
The Company's Investment [2] $ 1,248.5 $ 1,454.1
[1] During 2026, Canada Pension Plan Investment Board (“CPP”) sold its 45.0% ownership interest in three operating properties to an outside partner. The Company retained its 55.0% investment in these properties, which is now included in Other Institutional Joint Ventures. As a result, the CPP joint venture has one property interest remaining at September 30, 2026, and as such the Company’s CPP investment is now included in Other Institutional Joint Ventures.
[2] Represents 159 property interests and 24.2 million square feet of GLA as of September 30, 2026 and 162 property interests and 24.4 million square feet of GLA as of December 31, 2025.