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Note 14 - Noncontrolling Interests (Details) - Redeemed Units (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Preferred A Units [Member]  
Note 14 - Noncontrolling Interests (Details) - Redeemed Units [Line Items]  
Units Redeemed 2,200,000kim_NoncontrollingInterestUnits
/ us-gaap_PreferredUnitsByNameAxis
= kim_PreferredAUnitsMember
Par Value Redeemed $ 2.2kim_NoncontrollingInterestCumulativeParValue
/ us-gaap_PreferredUnitsByNameAxis
= kim_PreferredAUnitsMember
Class A Preferred Units [Member]  
Note 14 - Noncontrolling Interests (Details) - Redeemed Units [Line Items]  
Units Redeemed 2,000kim_NoncontrollingInterestUnits
/ us-gaap_PreferredUnitsByNameAxis
= kim_ClassAPreferredUnitsMember
Par Value Redeemed 20.0kim_NoncontrollingInterestCumulativeParValue
/ us-gaap_PreferredUnitsByNameAxis
= kim_ClassAPreferredUnitsMember
Class B-1 Preferred Units [Member]  
Note 14 - Noncontrolling Interests (Details) - Redeemed Units [Line Items]  
Units Redeemed 2,438kim_NoncontrollingInterestUnits
/ us-gaap_PreferredUnitsByNameAxis
= kim_ClassB1PreferredUnitsMember
Par Value Redeemed 24.4kim_NoncontrollingInterestCumulativeParValue
/ us-gaap_PreferredUnitsByNameAxis
= kim_ClassB1PreferredUnitsMember
Class B-2 Preferred Units [Member]  
Note 14 - Noncontrolling Interests (Details) - Redeemed Units [Line Items]  
Units Redeemed 5,576kim_NoncontrollingInterestUnits
/ us-gaap_PreferredUnitsByNameAxis
= kim_ClassB2PreferredUnitsMember
Par Value Redeemed 55.8kim_NoncontrollingInterestCumulativeParValue
/ us-gaap_PreferredUnitsByNameAxis
= kim_ClassB2PreferredUnitsMember
Class C DownReit Units [Member]  
Note 14 - Noncontrolling Interests (Details) - Redeemed Units [Line Items]  
Units Redeemed 61,804kim_NoncontrollingInterestUnits
/ us-gaap_CapitalUnitsByClassAxis
= kim_ClassCDownReitUnitsMember
Par Value Redeemed $ 1.9kim_NoncontrollingInterestCumulativeParValue
/ us-gaap_CapitalUnitsByClassAxis
= kim_ClassCDownReitUnitsMember