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Organization (Details) ft² in Millions, $ in Billions |  | 9 Months Ended
--- | --- | ---
Oct. 22, 2021 USD ($) property | Sep. 30, 2021 ft² property
RPAI | Subsequent Event |  |
Organization [Line Items] |  |
Number of real estate properties | 102 |
Merger transaction value | $ | $ 4.7 |
Assumption of debt | $ | $ 1.9 |
Operating and Redevelopment Properties |  |
Organization [Line Items] |  |
Number of real estate properties |  | 87
Area of real estate property | ft² |  | 16.8
Under Construction Retail Development Project |  |
Organization [Line Items] |  |
Number of real estate properties |  | 6
General Partner Units |  |
Organization [Line Items] |  |
Ownership interest of General Partner |  | 97.20%
KRG, LP |  |
Organization [Line Items] |  |
Ownership interest of Common Partner |  | 2.80%

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