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Note 15 - Noncontrolling Interests (Detail) - Redeemed Units (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2007 | Dec. 31, 2012 Preferred A Units [Member] | Dec. 31, 2012 Class A Preferred Units [Member] | Dec. 31, 2012 Class B-1 Preferred Units [Member] | Dec. 31, 2012 Class B-2 Preferred Units [Member] | Dec. 31, 2012 Class C DownReit Units [Member]
Units Redeemed |  | 2,200,000 | 2,000 | 2,438 | 5,576 | 61,804
Par Value Redeemed (in Dollars) | $ 1.1 | $ 2.2 | $ 20.0 | $ 24.4 | $ 55.8 | $ 1.9

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Namespace Prefix: | kim_
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