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FAIR VALUE MEASUREMENTS (Tables)
6 Months Ended
Jun. 30, 2013
FAIR VALUE MEASUREMENTS [Abstract]  
Summary of fair value instruments
The following tables categorize our fair value instruments, measured on a recurring basis, according to the assumptions used to calculate those values:

 
Fair Value Measurements Using
 
 
Quoted Prices in Active Markets for Identical Assets
 
Significant Other Observable Inputs
 
Significant Unobservable Inputs
 
Description
Asset / (Liability) Balance at
 
6/30/2013
 
(Level 1)
 
(Level 2)
 
(Level 3)
 
 
 
 
 
Interest rate swaps
 
$
(6.7
)
 
$
-
  
$
(6.7
)
 
$
-
 
                
Available-for-sale securities
  
10.7
   
10.7
   
-
   
-
 
                
Deferred compensation plan assets
  
10.7
   
-
   
10.7
   
-
 
                
Supplementary pension plan assets
  
8.6
   
-
   
8.6
   
-
 

 
Fair Value Measurements Using
 
 
Quoted Prices in Active Markets for Identical Assets
 
Significant Other Observable Inputs
 
Significant Unobservable Inputs
 
Description
Asset / (Liability) Balance at
 
12/31/2012
 
(Level 1)
 
(Level 2)
 
(Level 3)
 
 
 
 
 
Interest rate swaps
 
$
(8.4
)
 
$
-
  
$
(8.4
)
 
$
-
 
                
Available-for-sale securities
  
14.6
   
14.6
   
-
   
-
 
                
Deferred compensation plan assets
  
9.4
   
-
   
9.4
   
-
 
                
Supplementary pension plan assets
  
8.2
   
-
   
8.2
   
-