Represents the percentage of ownership interest in a joint venture.

No definition available.

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- Definition

The amount of payroll costs associated with real estate development projects that has been capitalized.

+ References

No definition available.

+ Details

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- Definition

The amount of real estate taxes and insurance from real estate development projects that has been capitalized.

+ References

No definition available.

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- Definition

The amount of capitalized costs associated with a real estate investment.

+ References

No definition available.

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- Definition

Represents capitalized costs of interest, real estate taxes, insurance, legal costs and payroll related to real estate under development.

+ References

No definition available.

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- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

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Period Type:	duration

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Definition

The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of real estate investments sold for entities with a substantial portion of business acquiring and holding investment real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 970
-SubTopic 360
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-28(Footnote 4))
-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024

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Balance Type:	credit
Period Type:	duration

- Definition

The amount of interest capitalized to an operative builder's inventory during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=kim_GrandParkwayMarketplaceMember
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- Details

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- Details

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Note 4 - Real Estate Under Development (Details Textual)	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2018 USD ($)
Real Estate Under Development, Capitalized Costs of Interest, Real Estate Taxes, Insurance, Legal Costs and Payroll	$ 24,900,000	$ 27,700,000
Payments to Acquire Real Estate, Total	5,407,000	153,854,000	$ 203,190,000
Real Estate Investment Property, Net, Total	9,250,519,000	9,817,875,000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Cost of Investment in Real Estate Sold	767,246,512	315,954,464	$ 391,758,149
Impairment of Real Estate	79,200,000	67,300,000
Real Estate Inventory, Capitalized Interest Costs Incurred	13,900,000	11,000,000
Real Estate Development Projects, Real Estate Taxes and Insurance Capitalized	2,600,000	5,700,000
Real Estate Development Projects, Payroll Costs Capitalized	1,900,000	$ 3,300,000
KIM Lincoln, LLC [Member]
Ownership Interest in Joint Venture, Percentage		90.00%
Lincoln Square Property, LP [Member]
Ownership Interest in Joint Venture, Percentage		10.00%
Grand Parkway Marketplace [Member]
Real Estate Investment Property, Net, Total				$ 47,400,000
Real Estate Investment, Capitazlized Costs				$ 5,200,000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Cost of Investment in Real Estate Sold		$ 2,900,000
Lincoln Square [Member]
Real Estate Investment Property, Net, Total	161,500,000
Real Estate Investment, Capitazlized Costs	7,100,000
Avenues Walk [Member]
Impairment of Real Estate	$ 37,800,000
Real Estate Under Development [Member]
Number of Real Estate Properties	2
Payments to Acquire Real Estate, Total		$ 10,000,000
Real Estate Properties, Future Development [Member]
Number of Real Estate Properties	1
Parcel Adjacent to Development Project [Member]
Payments to Acquire Real Estate, Total	$ 4,600,000
Development Project Placed in Service [Member]
Real Estate Investment Property, Net, Total	129,700,000
Real Estate Investment, Capitazlized Costs	$ 8,900,000