The number of shares issued or issuable per each acquired company share in the business acquisition.

No definition available.

Name:	kim_BusinessAcquisitionEquityInterestIssuedOrIssuableNumberOfSharesPerEachAcquiredCompanyShare
Namespace Prefix:	kim_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of cash outflow per each acquired company share associated with the acquisition of business during the period.

+ References

No definition available.

+ Details

Name:	kim_BusinessCombinationConsiderationTransferredCashPerEachAcquiredCompanyShare
Namespace Prefix:	kim_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of operating properties included in the acquired mortgage debt.

+ References

No definition available.

+ Details

Name:	kim_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedMortgageDebtProperties
Namespace Prefix:	kim_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of notes payable assumed at the acquisition date.

+ References

No definition available.

+ Details

Name:	kim_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNotesPayable
Namespace Prefix:	kim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the number of properties acquired.

+ References

No definition available.

+ Details

Name:	kim_NumberOfPropertiesAcquired
Namespace Prefix:	kim_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of business during the period, including additional consideration relating to reimbursements paid to the acquiree at the closing of the business combination.

+ References

No definition available.

+ Details

Name:	kim_PaymentsToAcquireBusinessesIncludingAdditionalConsiderationRelatingToReimbursements
Namespace Prefix:	kim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Of the number of properties acquired, this element represents the number held through joint venture programs.

+ References

No definition available.

+ Details

Name:	kim_PropertiesAcquiredNumberHeldThroughJointVenturePrograms
Namespace Prefix:	kim_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479

+ Details

Name:	us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI https://asc.fasb.org/extlink&oid=123586518&loc=d3e1043-128460

+ Details

Name:	us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6613-128477

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6578-128477

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

+ Details

Name:	us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of addition (reduction) to the amount at which a liability could be incurred (settled) in a current transaction between willing parties.

+ References

No definition available.

+ Details

Name:	us-gaap_LiabilitiesFairValueAdjustment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_LongtermDebtTypeAxis=kim_SeniorUnsecuredNotesAssumedInTheWeingartenAcquisitionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=kim_MortgageDebtAssumedInTheWeingartenAcquisitionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=kim_MortgageDebtFairValueAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=kim_WeingartenRealtyInvestorsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 3 - Weingarten Merger (Details Textual) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	Aug. 03, 2021 USD ($) $ / shares shares	Apr. 15, 2021 $ / shares shares	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Business Combination, Acquisition Related Costs			$ (0)	$ 46,998	$ (0)	$ 50,191
Senior Unsecured Notes Assumed in the Weingarten Acquisition [Member]
Liabilities, Fair Value Adjustment	$ 95,600
Mortgage Debt Assumed in the Weingarten Acquisition [Member]
Liabilities, Fair Value Adjustment	317,700
Mortgage Debt Fair Value Adjustment [Member]
Liabilities, Fair Value Adjustment	$ 11,000
Weingarten Realty Investors [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Per Each Acquired Company Share (in shares) \| shares	1.408	1.408
Business Combination, Consideration Transferred, Cash Per Each Acquired Company Share (in dollars per share) \| $ / shares	$ 2.20	$ 2.20
Business Combination, Consideration Transferred, Total	$ 4,100,000
Number of Properties Acquired	149
Properties Acquired, Number Held Through Joint Venture Programs	30
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Notes Payable	$ 1,500,000		$ (0)	1,497,632	$ (0)	1,497,632
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Mortgage Debt, Properties	16
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) \| shares	179,900,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 3,800,000
Payments to Acquire Businesses, Including Additional Consideration Relating to Reimbursements	$ 300,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual						73,500
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual						9,900
Business Combination, Acquisition Related Costs				$ 47,000		$ 50,200