SEGMENT INFORMATION (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Reconciliation of Revenue from Segments to Consolidated

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   June 30,						Six Months Ended   June 30,
	2017			2016			2017			2016
Reportable Segments
Composites	$	537		$	517		$	1,048		$	990
Insulation	439			414			838			799
Roofing	684			679			1,311			1,108
Total reportable segments	1,660			1,610			3,197			2,897
Corporate eliminations	(63		)	(65		)	(122		)	(121		)
NET SALES	$	1,597		$	1,545		$	3,075		$	2,776

Schedule of Revenues by Geographical Areas

External Customer Sales by Geographic Region
United States	$	1,139	$	1,097	$	2,190	$	1,942
Europe	147		152		287		286
Asia Pacific	185		174		338		319
Other	126		122		260		229
NET SALES	$	1,597	$	1,545	$	3,075	$	2,776

Schedule of Earnings before Interest and Taxes

The following table summarizes EBIT by segment (in millions):

	Three Months Ended   June 30,						Six Months Ended   June 30,
	2017			2016			2017			2016
Reportable Segments
Composites	$	84		$	74		$	155		$	138
Insulation	29			32			34			45
Roofing	155			169			280			242
Total reportable segments	268			275			469			425
Restructuring costs	(29		)	(3		)	(29		)	(3		)
Acquisition-related costs	(10		)	(2		)	(11		)	(4		)
Recognition of InterWrap inventory fair value step-up	—			(8		)	—			(8		)
Litigation settlement gain, net of legal fees	29			—			29			—
Pension settlement losses	(30		)	—			(30		)	—
General corporate expense and other	(38		)	(22		)	(68		)	(54		)
EBIT	$	190		$	240		$	360		$	356