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Note 21 - Income Taxes (Details) - GAAP Net Income/(Loss) to Taxable Income Reconciliation (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Note 21 - Income Taxes (Details) - GAAP Net Income/(Loss) to Taxable Income Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
GAAP net income | $ 52,781 us-gaap_NetIncomeLoss | $ 194,708 us-gaap_NetIncomeLoss | $ 89,512 us-gaap_NetIncomeLoss | $ 87,000 us-gaap_NetIncomeLoss | $ 61,609 us-gaap_NetIncomeLoss | $ 55,763 us-gaap_NetIncomeLoss | $ 51,139 us-gaap_NetIncomeLoss | $ 67,770 us-gaap_NetIncomeLoss | $ 424,001 us-gaap_NetIncomeLoss |  | $ 236,281 us-gaap_NetIncomeLoss |  | $ 266,073 us-gaap_NetIncomeLoss |
Net book depreciation in excess of tax depreciation |  |  |  |  |  |  |  |  | 39,620 us-gaap_IncomeTaxReconciliationNondeductibleExpenseDepreciation |  | 32,906 us-gaap_IncomeTaxReconciliationNondeductibleExpenseDepreciation |  | 37,492 us-gaap_IncomeTaxReconciliationNondeductibleExpenseDepreciation |
Capitalized leasing/legal commissions |  |  |  |  |  |  |  |  | (13,576)kim_EffectiveIncomeTaxRateReconciliationCapitalizedLeasinglegalCommissions |  |  |  | (12,986)kim_EffectiveIncomeTaxRateReconciliationCapitalizedLeasinglegalCommissions |
Deferred/prepaid/above and below market rents, net |  |  |  |  |  |  |  |  | (20,487)us-gaap_IncomeTaxReconciliationDeductionsOther |  | (11,985)us-gaap_IncomeTaxReconciliationDeductionsOther |  | (16,050)us-gaap_IncomeTaxReconciliationDeductionsOther |
Fair market value debt amortization |  |  |  |  |  |  |  |  | (7,419)kim_EffectiveIncomeTaxRateReconciliationDeductionFairMarketValueDebtAmortization |  | (3,510)kim_EffectiveIncomeTaxRateReconciliationDeductionFairMarketValueDebtAmortization |  | (2,977)kim_EffectiveIncomeTaxRateReconciliationDeductionFairMarketValueDebtAmortization |
Accounts receivable reserve |  |  |  |  |  |  |  |  | (681)kim_EffectiveIncomeTaxRateReconciliationDeductionAccountsReceivableReserve |  | (3,047)kim_EffectiveIncomeTaxRateReconciliationDeductionAccountsReceivableReserve |  | (741)kim_EffectiveIncomeTaxRateReconciliationDeductionAccountsReceivableReserve |
Book/tax differences from investments in real estate joint ventures |  |  |  |  |  |  |  |  | 33,268 us-gaap_IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary |  | (11,928)us-gaap_IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary |  | 60,441 us-gaap_IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary |
Book/tax difference on sale of property |  |  |  |  |  |  |  |  | (152,613)us-gaap_IncomeTaxReconciliationDispositionOfAssets |  | 36,896 us-gaap_IncomeTaxReconciliationDispositionOfAssets |  | (77,853)us-gaap_IncomeTaxReconciliationDispositionOfAssets |
Foreign income tax from Mexico capital gains |  |  |  |  |  |  |  |  | (17,387)us-gaap_IncomeTaxReconciliationTaxCreditsForeign |  | (31,130)us-gaap_IncomeTaxReconciliationTaxCreditsForeign |  |  |
Cumulative foreign currency translation adjustment & deferred tax adjustment |  |  |  |  |  |  |  |  | 145,608 us-gaap_IncomeTaxReconciliationOtherReconcilingItems |  | 5,095 us-gaap_IncomeTaxReconciliationOtherReconcilingItems |  |  |
Book adjustment to property carrying values and marketable equity securities |  |  |  |  |  |  |  |  | 93,956 us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses |  | 22,811 us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses |  | 2,656 us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses |
Taxable currency exchange (loss)/gain, net |  |  |  |  |  |  |  |  | (73,138)us-gaap_IncomeTaxReconciliationTaxExemptIncome |  | (25,958)us-gaap_IncomeTaxReconciliationTaxExemptIncome |  | (2,620)us-gaap_IncomeTaxReconciliationTaxExemptIncome |
Book/tax differences on capitalized costs |  |  |  |  |  |  |  |  | 5,498 us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther |  | 4,607 us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther |  | 5,781 us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther |
Repair regulation deduction |  |  |  |  |  |  |  |  | (95,033)kim_EffectiveIncomeTaxRateReconciliationDeductionsRepairRegulationDeduction |  |  |  |  |
Dividends from taxable REIT subsidiaries |  |  |  |  |  |  |  |  | 66,745 us-gaap_IncomeTaxReconciliationDeductionsDividends |  | 2,980 us-gaap_IncomeTaxReconciliationDeductionsDividends |  | 2,304 us-gaap_IncomeTaxReconciliationDeductionsDividends |
GAAP change in control gain |  |  |  |  |  |  |  |  | (107,235)kim_EffectiveIncomeTaxRateReconciliationGAAPChangeInControlGain |  | 9,147 kim_EffectiveIncomeTaxRateReconciliationGAAPChangeInControlGain |  | (15,555)kim_EffectiveIncomeTaxRateReconciliationGAAPChangeInControlGain |
Other book/tax differences, net |  |  |  |  |  |  |  |  |  |  | 229 us-gaap_IncomeTaxReconciliationOtherAdjustments |  | (25)us-gaap_IncomeTaxReconciliationOtherAdjustments |
Adjusted REIT taxable income |  |  |  |  |  |  |  |  | 300,743 kim_TaxableIncome |  | 249,891 kim_TaxableIncome |  | 242,792 kim_TaxableIncome |
Other Credit Derivatives [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Note 21 - Income Taxes (Details) - GAAP Net Income/(Loss) to Taxable Income Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other book/tax differences, net |  |  |  |  |  |  |  |  | (1,052)us-gaap_IncomeTaxReconciliationOtherAdjustments / kim_DisclosureAxis = us-gaap_OtherCreditDerivativesMember |  | (4,822)us-gaap_IncomeTaxReconciliationOtherAdjustments / kim_DisclosureAxis = us-gaap_OtherCreditDerivativesMember |  | 502 us-gaap_IncomeTaxReconciliationOtherAdjustments / kim_DisclosureAxis = us-gaap_OtherCreditDerivativesMember |
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Note 21 - Income Taxes (Details) - GAAP Net Income/(Loss) to Taxable Income Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sharebased Compensation |  |  |  |  |  |  |  |  | (1,078)us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  | (2,247)us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  | (200)us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
Employee Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Note 21 - Income Taxes (Details) - GAAP Net Income/(Loss) to Taxable Income Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sharebased Compensation |  |  |  |  |  |  |  |  | (5,144)us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  | (255)us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  | 1,774 us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
GAAP net loss/(income) of taxable REIT subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Note 21 - Income Taxes (Details) - GAAP Net Income/(Loss) to Taxable Income Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Less: GAAP net income of taxable REIT subsidiaries |  |  |  |  |  |  |  |  | (13,110)us-gaap_IncomeLossFromSubsidiariesNetOfTax / dei_LegalEntityAxis = kim_GAAPNetLossIncomeOfTaxableREITSubsidiariesMember |  | (5,950)us-gaap_IncomeLossFromSubsidiariesNetOfTax / dei_LegalEntityAxis = kim_GAAPNetLossIncomeOfTaxableREITSubsidiariesMember |  | (5,249)us-gaap_IncomeLossFromSubsidiariesNetOfTax / dei_LegalEntityAxis = kim_GAAPNetLossIncomeOfTaxableREITSubsidiariesMember |
GAAP net income from REIT operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Note 21 - Income Taxes (Details) - GAAP Net Income/(Loss) to Taxable Income Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
GAAP net income |  |  |  |  |  |  |  |  | $ 410,891 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = kim_GAAPNetIncomeFromREITOperationsMember | [1] | $ 230,331 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = kim_GAAPNetIncomeFromREITOperationsMember | [1] | $ 260,824 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = kim_GAAPNetIncomeFromREITOperationsMember | [1]
[1] | All adjustments to "GAAP net income from REIT operations" are net of amounts attributable to noncontrolling interest and taxable REIT subsidiaries.

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