Note 1 - Business and Organization (Details Textual) - Weingarten Realty Investors [Member] - $ / shares	Aug. 03, 2021	Apr. 15, 2021
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Per Each Acquired Company Share (in shares)	1.408	1.408
Business Combination, Consideration Transferred, Cash Per Each Acquired Company Share (in dollars per share)	$ 2.20	$ 2.20

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

No definition available.

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