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Note 21 - Income Taxes (Details) (USD $)	1 Months Ended	12 Months Ended
	Oct. 31, 2011	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Note 21 - Income Taxes (Details) [Line Items]
Required Dividend Payout		90.00%kim_RequiredDividendPayout
Dividends, Cash		$ 427,873,000us-gaap_DividendsCash		$ 400,354,000us-gaap_DividendsCash		$ 382,722,000us-gaap_DividendsCash
Deferred Tax Assets, Net		75,541,000us-gaap_DeferredTaxAssetsLiabilitiesNet		91,242,000us-gaap_DeferredTaxAssetsLiabilitiesNet
Deferred Tax Assets, Property, Plant and Equipment		43,200,000us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment
Deferred Tax Liabilities, Property, Plant and Equipment		25,500,000us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Deferred Tax Assets, Operating Loss Carryforwards		51,142,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards		72,716,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Deferred Tax Assets, Other Loss Carryforwards		3,843,000us-gaap_DeferredTaxAssetsOtherLossCarryforwards		6,214,000us-gaap_DeferredTaxAssetsOtherLossCarryforwards
Deferred Tax Assets, Tax Credit Carryforwards		3,899,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards		3,773,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards
Deferred Tax Assets, Capital Loss Carryforwards		3,995,000us-gaap_DeferredTaxAssetsCapitalLossCarryforwards		3,867,000us-gaap_DeferredTaxAssetsCapitalLossCarryforwards
Taxable Income		300,743,000kim_TaxableIncome		249,891,000kim_TaxableIncome		242,792,000kim_TaxableIncome
Deferred Tax Assets, Net of Valuation Allowance		107,856,000us-gaap_DeferredTaxAssetsNet		123,911,000us-gaap_DeferredTaxAssetsNet
Income Tax Examination, Potential Penalty, Percent		100.00%kim_IncomeTaxExaminationPotentialPenaltyPercent
Income Tax Examination, Penalties Expense	40,900,000us-gaap_IncomeTaxExaminationPenaltiesExpense
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions			[1]	12,315,000us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	[1]
Unrecognized Tax Benefits		4,649,000us-gaap_UnrecognizedTaxBenefits		4,590,000us-gaap_UnrecognizedTaxBenefits		16,890,000us-gaap_UnrecognizedTaxBenefits
REIT Eligibility [Member]
Note 21 - Income Taxes (Details) [Line Items]
Number of Years		4kim_NumberOfYears / kim_DisclosureAxis = kim_REITEligibilityMember
KRS [Member] | Used [Member]
Note 21 - Income Taxes (Details) [Line Items]
Operating Loss Carryforwards		27,400,000us-gaap_OperatingLossCarryforwards / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_KRSMember / us-gaap_StatementScenarioAxis = kim_UsedMember
KRS [Member] | Determination of Future Projected Income [Member]
Note 21 - Income Taxes (Details) [Line Items]
Number of Years		20kim_NumberOfYears / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_KRSMember / us-gaap_StatementScenarioAxis = kim_DeterminationOfFutureProjectedIncomeMember
KRS [Member]
Note 21 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards		19,800,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_KRSMember
Deferred Tax Assets, Tax Credit Carryforwards, General Business		1,500,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_KRSMember
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax		2,400,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_KRSMember
Taxable Income		27,400,000kim_TaxableIncome / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_KRSMember
Operating Loss Carryforwards		72,800,000us-gaap_OperatingLossCarryforwards / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_KRSMember		10,000,000us-gaap_OperatingLossCarryforwards / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_KRSMember
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration				64,300,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_KRSMember
Deferred Tax Assets, Net of Valuation Allowance		65,500,000us-gaap_DeferredTaxAssetsNet / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_KRSMember
FNC Realty Corporation [Member] | Net [Member]
Note 21 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards		6,300,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_FNCRealtyCorporationMember / us-gaap_StatementScenarioAxis = kim_NetMember
FNC Realty Corporation [Member]
Note 21 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards				42,500,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_FNCRealtyCorporationMember
Deferred Tax Assets, Valuation Allowance		25,000,000us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_FNCRealtyCorporationMember
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration		94,400,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_FNCRealtyCorporationMember		108,400,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_FNCRealtyCorporationMember
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount				(8,700,000)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kim_FNCRealtyCorporationMember
Foreign Tax Authority [Member] | Canada and Latin America [Member]
Note 21 - Income Taxes (Details) [Line Items]
Deferred Tax Liabilities, Net		5,500,000us-gaap_DeferredTaxLiabilities / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / us-gaap_StatementGeographicalAxis = kim_CanadaAndLatinAmericaMember
Foreign Tax Authority [Member]
Note 21 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Net		1,300,000us-gaap_DeferredTaxAssetsLiabilitiesNet / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember
Deferred Tax Assets, Valuation Allowance		9,300,000us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember
Deferred Tax Liabilities, Net		6,800,000us-gaap_DeferredTaxLiabilities / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember
Related Parties [Member]
Note 21 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Other Loss Carryforwards		3,800,000us-gaap_DeferredTaxAssetsOtherLossCarryforwards / us-gaap_RelatedPartyTransactionAxis = kim_RelatedPartiesMember
Statute of Limitations [Member] | Minimum [Member]
Note 21 - Income Taxes (Details) [Line Items]
Number of Years		3kim_NumberOfYears / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_StatementScenarioAxis = kim_StatuteOfLimitationsMember
Statute of Limitations [Member] | Maximum [Member]
Note 21 - Income Taxes (Details) [Line Items]
Number of Years		7kim_NumberOfYears / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_StatementScenarioAxis = kim_StatuteOfLimitationsMember
Latin America [Member]
Note 21 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Valuation Allowance		9,300,000us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_StatementGeographicalAxis = us-gaap_LatinAmericaMember
Deferred Tax Assets, Net of Valuation Allowance		9,500,000us-gaap_DeferredTaxAssetsNet / us-gaap_StatementGeographicalAxis = us-gaap_LatinAmericaMember
CANADA
Note 21 - Income Taxes (Details) [Line Items]
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions				12,300,000us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions / us-gaap_StatementGeographicalAxis = country_CA
Unrecognized Tax Benefits		10,400,000us-gaap_UnrecognizedTaxBenefits / us-gaap_StatementGeographicalAxis = country_CA
Parent Company [Member]
Note 21 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Tax Credit Carryforwards		3,900,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Deferred Tax Assets, Capital Loss Carryforwards		$ 4,000,000us-gaap_DeferredTaxAssetsCapitalLossCarryforwards / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
[1] This amount was reclassified against the related deferred tax asset relating to the Company's early adoption of ASU 2013-11 as discussed above.

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