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INVESTMENTS-AFFILIATED COMPANIES (Tables)
12 Months Ended
Dec. 31, 2011
Equity Method Investments and Joint Ventures [Abstract]  
Investment in non-consolidated equity affiliates
The following table summarizes our investments in our non-consolidated equity affiliates:
   
December 31,
 
   
2011
   
2010
 
   
($ in millions)
 
SunBelt
 
$
-
   
$
0.1
 
Bay Gas
   
17.1
     
14.8
 
Bleach joint venture
   
10.5
     
11.0
 
Investments in equity affiliates
 
$
27.6
   
$
25.9
 


Summary of equity earnings of non-consolidated affiliates
The following table summarizes our equity earnings of non-consolidated affiliates:

   
Years Ended December 31,
 
   
2011
   
2010
   
2009
 
   
($ in millions)
 
SunBelt
 
$
6.3
   
$
26.6
   
$
33.2
 
Bay Gas
   
2.4
     
2.2
     
1.9
 
Bleach joint venture
   
0.9
     
1.1
     
2.6
 
Equity earnings of non-consolidated affiliates
 
$
9.6
   
$
29.9
   
$
37.7