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SEGMENT INFORMATION
 6 Months Ended
Jun. 30, 2013
Segment Reporting [Abstract]  
SEGMENT INFORMATION
SEGMENT INFORMATION

We define segment results as income before interest expense, interest income, other operating income (expense), other expense and income taxes, and include the operating results of non-consolidated affiliates. Intersegment sales of $26.3 million and $43.6 million for the three and six months ended June 30, 2013, respectively, have been eliminated. These represent the sale of caustic soda, bleach, potassium hydroxide and hydrochloric acid between Chemical Distribution and Chlor Alkali Products, at prices that approximate market. Consistent with management’s monitoring of the operating segments, synergies realized of $3.3 million and $6.2 million for the three and six months ended June 30, 2013, respectively, have been transferred from the Chlor Alkali Products segment to the Chemical Distribution segment, representing incremental earnings on volumes sold of caustic soda, bleach, potassium hydroxide and hydrochloric acid.

 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2013
 
2012
 
2013
 
2012
Sales:
($ in millions)
Chlor Alkali Products
$
367.0

 
$
363.2

 
$
715.9

 
$
722.9

Chemical Distribution
113.4

 
—

 
223.8

 
—

Winchester
198.1

 
145.5

 
386.1

 
293.0

Intersegment sales elimination
(26.3
)
 
—

 
(43.6
)
 
—

Total sales
$
652.2

 
$
508.7

 
$
1,282.2

 
$
1,015.9

Income before taxes:
 
 
 
 
 
 
 
Chlor Alkali Products
$
50.2

 
$
75.0

 
$
108.7

 
$
149.4

Chemical Distribution
2.2

 
—

 
6.3

 
—

Winchester
37.1

 
11.9

 
68.4

 
22.7

Corporate/other:
 
 
 
 
 
 
 
Pension income
6.4

 
7.0

 
12.7

 
13.3

Environmental expense
(2.4
)
 
(0.3
)
 
(4.2
)
 
(3.1
)
Other corporate and unallocated costs
(20.3
)
 
(20.8
)
 
(41.6
)
 
(38.7
)
Restructuring charges
(0.2
)
 
(1.8
)
 
(2.5
)
 
(3.7
)
Other operating income (expense)
1.5

 
(0.1
)
 
1.7

 
0.4

Interest expense
(9.7
)
 
(5.8
)
 
(18.8
)
 
(12.3
)
Interest income
0.1

 
0.3

 
0.2

 
0.5

Other expense
(2.2
)
 
(2.1
)
 
(4.4
)
 
(4.7
)
Income before taxes
$
62.7

 
$
63.3

 
$
126.5

 
$
123.8