Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 21, 2021
Document Information [Line Items]
Entity Central Index Key	0000879101
Entity Registrant Name	KIMCO REALTY CORP
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	1-10899
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	13-2744380
Entity Address, Address Line One	500 North Broadway, Suite 201
Entity Address, City or Town	Jericho
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	11753
City Area Code	516
Local Phone Number	869-9000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		433,513,481
Class M Cumulative Redeemable Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing one-thousandth of a share of 5.250% Class M Cumulative Redeemable, Preferred Stock, $1.00 par value per share.
Trading Symbol	KIMprM
Security Exchange Name	NYSE
Class L Cumulative Redeemable Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing one-thousandth of a share of 5.125% Class L Cumulative Redeemable, Preferred Stock, $1.00 par value per share.
Trading Symbol	KIMprL
Security Exchange Name	NYSE
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $.01 per share.
Trading Symbol	KIM
Security Exchange Name	NYSE