SEGMENT INFORMATION
 9 Months Ended
Sep. 30, 2015
Segment Reporting [Abstract]  
SEGEMENT INFORMATION
SEGMENT INFORMATION
In the fourth quarter of 2014, Owens Corning announced organizational changes to streamline the Company's management structure and reduce costs. As a result of this action, the Building Materials Group organizational structure was eliminated. The Company's management structure now has three reportable segments: Composites, Insulation and Roofing. As a result, the 2014 segment information in this Note has been presented to reflect the new structure. Accounting policies for the segments are the same as those for the Company. The Company’s reportable segments are defined as follows:
Composites – comprised of our Reinforcements and Downstream businesses. Within the Reinforcements business, the Company manufactures, fabricates and sells glass reinforcements in the form of fiber. Within the Downstream business, the Company manufactures and sells glass fiber products in the form of fabrics, mat, veil and other specialized products.
Insulation – Within our Insulation business, the Company manufactures and sells fiberglass insulation into residential, commercial, industrial and other markets for both thermal and acoustical applications. It also manufactures and sells glass fiber pipe insulation, energy efficient flexible duct media, bonded and granulated mineral wool insulation and foam insulation used in above- and below-grade construction applications.
Roofing – Within our Roofing business, the Company manufactures and sells residential roofing shingles and oxidized asphalt materials used in residential and commercial construction and specialty applications.


 NET SALES
The following table summarizes our net sales by segment and geographic region (in millions). Corporate eliminations (shown below) largely reflect intercompany sales from Composites to Roofing. External customer sales are attributed to geographic region based upon the location from which the product is shipped to the external customer.
  
Three Months Ended 
 September 30,
Nine Months Ended 
 September 30,
  
2015
2014
2015
2014
Reportable Segments
 
 
 
 
Composites
$
500

$
489

$
1,486

$
1,471

Insulation
502

454

1,332

1,256

Roofing
502

474

1,398

1,408

Total reportable segments
1,504

1,417

4,216

4,135

Corporate eliminations
(43
)
(35
)
(134
)
(120
)
NET SALES
$
1,461

$
1,382

$
4,082

$
4,015



External Customer Sales by Geographic Region
 
 
 
 
United States
$
1,029

$
938

$
2,825

$
2,726

Europe
128

142

393

451

Asia Pacific
178

168

492

474

Other
126

134

372

364

NET SALES
$
1,461

$
1,382

$
4,082

$
4,015


EARNINGS BEFORE INTEREST AND TAXES

Earnings before interest and taxes (“EBIT”) by segment consist of net sales less related costs and expenses and are presented on a basis that is used internally for evaluating segment performance. Certain items, such as general corporate expenses or income and certain other expense or income items, are excluded from the internal evaluation of segment performance. Accordingly, these items are not reflected in EBIT for our reportable segments and are included in the Corporate, Other and Eliminations category.
The following table summarizes EBIT by segment (in millions):
  
Three Months Ended 
 September 30,
Nine Months Ended 
 September 30,
  
2015
2014
2015
2014
Reportable Segments
 
 
 
 
Composites
$
61

$
32

$
188

$
96

Insulation
58

43

90

62

Roofing
103

58

213

200

Total reportable segments
222

133

491

358

Charges related to cost reduction actions and related items
(2
)
(21
)
(4
)
(33
)
Net loss on sale of European Stone business
—

(1
)
—

(20
)
Impairment loss on Alcala, Spain facility held for sale
—

(3
)
—

(3
)
Gain on sale of Hangzhou, China facility
—

—

—

45

Net loss related to Hurricane Sandy
—

—

—

(6
)
General corporate expense and other
(24
)
(1
)
(77
)
(53
)
EBIT
$
196

$
107

$
410

$
288