MORTGAGE AND OTHER INDEBTEDNESS - Schedule of Unsecured Term Loans Key Terms (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2026 USD ($) extension	Dec. 31, 2025 USD ($)
Debt Instrument [Line Items]
Gross debt	$ 2,845,169	$ 3,027,937
Unsecured term loans
Debt Instrument [Line Items]
Gross debt	550,000	550,000
Unsecured term loans \| Unsecured term loan due 2027 - fixed rate
Debt Instrument [Line Items]
Gross debt	$ 250,000	250,000
Number of extension options \| extension	1
Extension period	1 year
Unsecured term loans \| Unsecured term loan due 2027 - fixed rate \| Kite Realty Group, L.P.
Debt Instrument [Line Items]
Gross debt	$ 250,000
Number of extension options \| extension	1
Extension period	1 year
Unsecured term loans \| Unsecured term loan due 2027 - fixed rate \| Kite Realty Group, L.P. \| Minimum \| Investment-Grade Pricing
Debt Instrument [Line Items]
Credit spread (as a percent)	0.75%
Unsecured term loans \| Unsecured term loan due 2027 - fixed rate \| Kite Realty Group, L.P. \| Maximum \| Investment-Grade Pricing
Debt Instrument [Line Items]
Credit spread (as a percent)	1.60%
Unsecured term loans \| Unsecured term loan due 2029 - fixed rate
Debt Instrument [Line Items]
Gross debt	$ 300,000	$ 300,000
Unsecured term loans \| Unsecured term loan due 2029 - fixed rate \| Minimum
Debt Instrument [Line Items]
Credit spread (as a percent)	0.75%
Unsecured term loans \| Unsecured term loan due 2029 - fixed rate \| Maximum
Debt Instrument [Line Items]
Credit spread (as a percent)	1.60%
Unsecured term loans \| Unsecured term loan due 2029 - fixed rate \| Kite Realty Group, L.P.
Debt Instrument [Line Items]
Gross debt	$ 300,000
Unsecured term loans \| Unsecured term loan due 2029 - fixed rate \| Kite Realty Group, L.P. \| Minimum \| Investment-Grade Pricing
Debt Instrument [Line Items]
Credit spread (as a percent)	0.75%
Unsecured term loans \| Unsecured term loan due 2029 - fixed rate \| Kite Realty Group, L.P. \| Maximum \| Investment-Grade Pricing
Debt Instrument [Line Items]
Credit spread (as a percent)	1.60%