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Note 9 - Other Assets - Mortgage Loans and Other Financing Receivables (Details) $ in Millions	Jun. 30, 2023 USD ($)
Face amount	$ 25.0
Financing Receivable Maturing In December 24 [Member]
Face amount	$ 11.2
Interest rate	14.00%
Financing Receivable Maturing In April 24 [Member]
Face amount	$ 25.0
Interest rate	8.00%

X

- Definition

Face amount of financing receivable.

+ References

No definition available.

+ Details

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

X

- Definition

Contractual interest rate for financing receivable.

+ References

No definition available.

+ Details

Name:	kim_FinancingReceivableInterestRateStatedPercentage
Namespace Prefix:	kim_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=kim_FinancingReceivableMaturingInDecember24Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=kim_FinancingReceivableMaturingInApril24Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: