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SEGMENT INFORMATION
 9 Months Ended
Sep. 30, 2017
Segment Reporting [Abstract]  
SEGMENT INFORMATION
SEGMENT INFORMATION

We define segment results as income (loss) before interest expense, interest income, other operating income (expense), and income taxes, and include the operating results of non-consolidated affiliates. Consistent with the guidance in ASC 280 “Segment Reporting” (ASC 280), we have determined it is appropriate to include the operating results of non-consolidated affiliates in the relevant segment financial results. We have three operating segments: Chlor Alkali Products and Vinyls, Epoxy and Winchester. The three operating segments reflect the organization used by our management for purposes of allocating resources and assessing performance. Chlorine used in our Epoxy segment is transferred at cost from the Chlor Alkali Products and Vinyls segment. Sales and profits are recognized in the Chlor Alkali Products and Vinyls segment for all caustic soda generated and sold by Olin.

 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2017
 
2016
 
2017
 
2016
Sales:
($ in millions)
Chlor Alkali Products and Vinyls
$
881.2

 
$
779.4

 
$
2,583.2

 
$
2,216.7

Epoxy
489.9

 
470.1

 
1,549.5

 
1,380.3

Winchester
183.8

 
203.2

 
515.8

 
567.9

Total sales
$
1,554.9

 
$
1,452.7

 
$
4,648.5

 
$
4,164.9

Income (loss) before taxes:
 
 
 
 
 
 
 
Chlor Alkali Products and Vinyls
$
129.7

 
$
53.7

 
$
270.0

 
$
152.5

Epoxy
(1.7
)
 
10.3

 
(11.0
)
 
18.5

Winchester
17.2

 
36.0

 
61.3

 
95.9

Corporate/other:
 
 
 
 
 
 
 
Pension income
11.1

 
15.4

 
32.1

 
40.2

Environmental expense
(1.8
)
 
(0.4
)
 
(6.2
)
 
(5.5
)
Other corporate and unallocated costs
(31.1
)
 
(28.2
)
 
(94.2
)
 
(81.7
)
Restructuring charges
(9.2
)
 
(5.2
)
 
(25.9
)
 
(106.2
)
Acquisition-related costs
(1.1
)
 
(13.1
)
 
(12.5
)
 
(39.6
)
Other operating (expense) income
—

 
(0.2
)
 
(0.1
)
 
10.5

Interest expense
(53.1
)
 
(47.5
)
 
(158.0
)
 
(143.6
)
Interest income
0.4

 
0.5

 
1.0

 
1.3

Income (loss) before taxes
$
60.4

 
$
21.3

 
$
56.5

 
$
(57.7
)