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Organization (Details) ft² in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2020 ft² property | Jun. 30, 2019 property
Organization [Line Items] |  |
Number of real estate properties (in properties) |  | 0
Area of real estate property | ft² | 17.6 |
Operating and Redevelopment Properties |  |
Organization [Line Items] |  |
Number of real estate properties (in properties) | 90 |
Under Construction Retail Development Project |  |
Organization [Line Items] |  |
Number of real estate properties (in properties) | 2 |
General Partner Units |  |
Organization [Line Items] |  |
Ownership interest of General Partner (as percent) | 97.40% |
KRG, LP |  |
Organization [Line Items] |  |
Ownership interest of Common Partner (as percent) | 2.60% |

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