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Note 10 - Variable Interest Entities (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012
Variable Interest Entity, Primary Beneficiary [Member] | Operating Properties [Member] |
Number of Consolidated Entities | 2
Variable Interest Entity, Consolidated, Carrying Amount, Assets | $ 10.8
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities | 0.1
Variable Interest Entity, Primary Beneficiary [Member] | Ground Up Developments [Member] |
Number of Consolidated Entities | 2
Variable Interest Entity, Consolidated, Carrying Amount, Assets | 87.8
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities | 0.1
Variable Interest Entity, Financial or Other Support, Amount | 33.3
Variable Interest Entity, Not Primary Beneficiary [Member] | Ground Up Developments [Member] |
Variable Interest Entity, Financial or Other Support, Amount | 17.9
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount | 36.3
Variable Interest Entity, Financial or Other Support, Future Funding | 18.4
Variable Interest Entity, Not Primary Beneficiary [Member] | Preferred Equity Investments [Member] |
Number of Consolidated Entities | 1
Variable Interest Entity, Not Primary Beneficiary [Member] | Redevelopment [Member] |
Variable Interest Entity, Financial or Other Support, Amount | 12.1
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount | $ 12.1

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- Definition No authoritative reference available. + References No definition available. + Details
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Namespace Prefix: | kim_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition No authoritative reference available. + References No definition available. + Details
Name: | kim_VariableInterestEntityFinancialOrOtherSupportFutureFunding
Namespace Prefix: | kim_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5710-111685 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5710-111685 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS140-4/FIN46(R) -Paragraph C6 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7880789&loc=SL6759159-111685 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS140-4/FIN46(R)-8 -Paragraph C4 -Subparagraph c -Clause 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | duration