Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flow from operating activities:
Net income	$ 113,014	$ 403,046
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation and amortization	302,867	255,546
Impairment charges	3,902	11,806
Straight-line rental income adjustments, net	(12,934)	(12,001)
Amortization of above-market and below-market leases, net	(10,345)	(10,002)
Amortization of deferred financing costs and fair value debt adjustments, net	(910)	(4,656)
Equity award expense	18,293	17,457
Gain on sale of properties	(393)	(52,376)
Loss/(gain) on marketable securities, net	27,692	(4,417)
Change in fair value of embedded derivative liability	3,079	0
Distributions from joint ventures and other investments	52,664	35,742
Change in accounts and notes receivable, net	29,459	21,605
Change in accounts payable and accrued expenses	9,603	1,237
Change in other operating assets and liabilities, net	(14,157)	(14,735)
Net cash flow provided by operating activities	470,150	600,279
Cash flow from investing activities:
Acquisition of operating real estate and other related net assets	0	(98,546)
Improvements to operating real estate	(128,594)	(108,346)
Acquisition of RPT Realty	(149,103)	0
Investment in marketable securities	(11)	(2,988)
Proceeds from sale of marketable securities	300,763	290,311
Investment in cost method investment	(36)	(1,532)
Investments in and advances to real estate joint ventures	(3,182)	(18,751)
Reimbursements of investments in and advances to real estate joint ventures	18,159	7,961
Investments in and advances to other investments	(3,913)	(10,192)
Reimbursements of investments in and advances to other investments	2,856	419
Investment in mortgage and other financing receivables	(178,934)	(11,211)
Collection of mortgage and other financing receivables	61,122	84
Proceeds from sale of properties	70,341	115,714
Net cash flow (used for)/provided by investing activities	(10,532)	162,923
Cash flow from financing activities:
Principal payments on debt, excluding normal amortization of rental property debt	(11,774)	(49,187)
Principal payments on rental property debt	(4,963)	(5,621)
Proceeds from issuance of unsecured term loans	510,000	0
Proceeds from unsecured revolving credit facility, net	220,000	0
Financing origination costs	(1,563)	(6,041)
Contributions from noncontrolling interests	0	4
Redemption/distribution of noncontrolling interests	(8,318)	(5,752)
Dividends paid	(338,085)	(297,748)
Proceeds from issuance of stock/units	0	3,727
Repurchase of preferred stock/units	0	(1,491)
Shares/Units repurchased for employee tax withholding on equity awards	(14,665)	(16,124)
Change in tenants' security deposits	1,248	1,679
Net cash flow used for financing activities	(1,115,820)	(376,554)
Net change in cash, cash equivalents and restricted cash	(656,202)	386,648
Cash, cash equivalents and restricted cash, beginning of the period	783,757	149,829
Cash, cash equivalents and restricted cash, end of the period	127,555	536,477
Supplemental Cash Flow Information [Abstract]
Interest paid (net of capitalized interest of $1,153 and $854, respectively)	150,906	124,674
Income taxes paid, net of refunds	57,805	56,774
Unsecured Term Loan [Member]
Cash flow from financing activities:
Repayments of unsecured term loans	(310,000)	0
Senior Unsecured Notes [Member]
Cash flow from financing activities:
Repayments of unsecured term loans	(1,157,700)	0
Joint Ventures [Member]
Adjustments to reconcile net income to net cash flow provided by operating activities:
Equity in income, net	(42,432)	(41,332)
Other Real Estate Investments [Member]
Adjustments to reconcile net income to net cash flow provided by operating activities:
Equity in income, net	(9,252)	(6,641)
Kimco Realty OP, LLC [Member]
Cash flow from operating activities:
Net income	113,014	403,046
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation and amortization	302,867	255,546
Impairment charges	3,902	11,806
Straight-line rental income adjustments, net	(12,934)	(12,001)
Amortization of above-market and below-market leases, net	(10,345)	(10,002)
Amortization of deferred financing costs and fair value debt adjustments, net	(910)	(4,656)
Equity award expense	18,293	17,457
Gain on sale of properties	(393)	(52,376)
Loss/(gain) on marketable securities, net	27,692	(4,417)
Change in fair value of embedded derivative liability	3,079	0
Distributions from joint ventures and other investments	52,664	35,742
Change in accounts and notes receivable, net	29,459	21,605
Change in accounts payable and accrued expenses	9,603	1,237
Change in other operating assets and liabilities, net	(14,157)	(14,735)
Net cash flow provided by operating activities	470,150	600,279
Cash flow from investing activities:
Acquisition of operating real estate and other related net assets	0	(98,546)
Improvements to operating real estate	(128,594)	(108,346)
Acquisition of RPT Realty	(149,103)	0
Investment in marketable securities	(11)	(2,988)
Proceeds from sale of marketable securities	300,763	290,311
Investment in cost method investment	(36)	(1,532)
Investments in and advances to real estate joint ventures	(3,182)	(18,751)
Reimbursements of investments in and advances to real estate joint ventures	18,159	7,961
Investments in and advances to other investments	(3,913)	(10,192)
Reimbursements of investments in and advances to other investments	2,856	419
Investment in mortgage and other financing receivables	(178,934)	(11,211)
Collection of mortgage and other financing receivables	61,122	84
Proceeds from sale of properties	70,341	115,714
Net cash flow (used for)/provided by investing activities	(10,532)	162,923
Cash flow from financing activities:
Principal payments on debt, excluding normal amortization of rental property debt	(11,774)	(49,187)
Principal payments on rental property debt	(4,963)	(5,621)
Proceeds from issuance of unsecured term loans	510,000	0
Proceeds from unsecured revolving credit facility, net	220,000	0
Financing origination costs	(1,563)	(6,041)
Contributions from noncontrolling interests	0	4
Redemption/distribution of noncontrolling interests	(8,318)	(5,752)
Dividends paid	(338,085)	(297,748)
Proceeds from issuance of stock/units	0	3,727
Repurchase of preferred stock/units	0	(1,491)
Shares/Units repurchased for employee tax withholding on equity awards	(14,665)	(16,124)
Change in tenants' security deposits	1,248	1,679
Net cash flow used for financing activities	(1,115,820)	(376,554)
Net change in cash, cash equivalents and restricted cash	(656,202)	386,648
Cash, cash equivalents and restricted cash, beginning of the period	783,757	149,829
Cash, cash equivalents and restricted cash, end of the period	127,555	536,477
Supplemental Cash Flow Information [Abstract]
Interest paid (net of capitalized interest of $1,153 and $854, respectively)	150,906	124,674
Income taxes paid, net of refunds	57,805	56,774
Kimco Realty OP, LLC [Member] | Unsecured Term Loan [Member]
Cash flow from financing activities:
Repayments of unsecured term loans	(310,000)	0
Kimco Realty OP, LLC [Member] | Senior Unsecured Notes [Member]
Cash flow from financing activities:
Repayments of unsecured term loans	(1,157,700)	0
Kimco Realty OP, LLC [Member] | Joint Ventures [Member]
Adjustments to reconcile net income to net cash flow provided by operating activities:
Equity in income, net	(42,432)	(41,332)
Kimco Realty OP, LLC [Member] | Other Real Estate Investments [Member]
Adjustments to reconcile net income to net cash flow provided by operating activities:
Equity in income, net	$ (9,252)	$ (6,641)