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Note 5 - Dispositions of Real Estate (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Disposal Groups, Including Discontinued Operations [Table Text Block]
  

Year Ended December 31,

 
   2021 (1)   2020   2019 (2) 

Aggregate sales price/gross fair value

 $612.4  $31.8  $344.7 

Gain on sale of properties (3)

 $30.8  $6.5  $79.2 

Number of operating properties sold/deconsolidated

  13   3   20 

Number of parcels sold

  10   4   9