10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

þQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2015

or

¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from             to            

Commission File Number:     1-33100

Owens Corning

(Exact name of registrant as specified in its charter)

Delaware	43-2109021
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
One Owens Corning Parkway, Toledo, OH	43659
(Address of principal executive offices)	(Zip Code)

(419) 248-8000

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes þ             No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Yes þ             No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer þ	Accelerated filer ¨
Non-accelerated filer ¨ (Do not check if a smaller reporting company)	Smaller reporting company ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ¨             No þ

As of April 15, 2015, 117,995,865 shares of registrant’s common stock, par value $0.01 per share, were outstanding.

			Contents
Cover Page			1
PART I – FINANCIAL INFORMATION (unaudited)
	Item 1.	Financial Statements
		Consolidated Statements of Earnings	3
		Consolidated Statements of Comprehensive Earnings	4
		Consolidated Balance Sheets	5
		Consolidated Statements of Cash Flows	6
		Notes to Consolidated Financial Statements
		1.    General	7
		2.    Segment Information	7
		3.    Inventories	9
		4.    Derivative Financial Instruments	10
		5.    Goodwill and Other Intangible Assets	12
		6.    Property, Plant and Equipment	13
		7. Divestitures	14
		8.    Assets Held for Sale	14
		9.  Warranties	14
		10.  Cost Reduction Actions	15
		11.  Debt	16
		12.  Pension Plans and Other Postretirement Benefits	18
		13.  Contingent Liabilities and Other Matters	19
		14.  Stock Compensation	20
		15.  Earnings per Share	23
		16.  Fair Value Measurement	23
		17.  Income Taxes	25
		18.  Changes in Accumulated Other Comprehensive Deficit	25
		19.  Accounting Pronouncements	27
		20.  Condensed Consolidating Financial Statements	27
	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	36
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk	46
	Item 4.	Controls and Procedures	46
PART II – OTHER INFORMATION
	Item 1.	Legal Proceedings	47
	Item 1A.	Risk Factors	47
	Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	47
	Item 3.	Defaults Upon Senior Securities	47
	Item 4.	Mine Safety Disclosures	47
	Item 5.	Other Information	48
	Item 6.	Exhibits	48
		Signatures	49
		Exhibit Index	50

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PART I

ITEM 1. FINANCIAL STATEMENTS

OWENS CORNING AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EARNINGS

(unaudited)

(in millions, except per share amounts)

	Three Months Ended   March 31,
	2015		2014
NET SALES	$	1,207	$	1,278
COST OF SALES	998		1,044
Gross margin	209		234
OPERATING EXPENSES
Marketing and administrative expenses	129		132
Science and technology expenses	17		19
Charges related to cost reduction actions	—		12
Other expenses (income), net	5		(37		)
Total operating expenses	151		126
EARNINGS BEFORE INTEREST AND TAXES	58		108
Interest expense, net	26		27
EARNINGS BEFORE TAXES	32		81
Less: Income tax expense (benefit)	13		(39		)
NET EARNINGS	19		120
Less: Net earnings attributable to noncontrolling interests	1		—
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	$	18	$	120
EARNINGS PER COMMON SHARE ATTRIBUTABLE TO OWENS CORNING COMMON STOCKHOLDERS
Basic	$	0.15	$	1.02
Diluted	$	0.15	$	1.01
Dividend	$	0.17	$	0.16
WEIGHTED AVERAGE COMMON SHARES
Basic	117.8		117.8
Diluted	118.5		118.7

The accompanying Notes to the Consolidated Financial Statements are an integral part of this Statement.

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OWENS CORNING AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (LOSS)

(unaudited)

(in millions)

	Three Months Ended   March 31,
	2015			2014
NET EARNINGS	$	19		$	120
Currency translation adjustment (net of tax of $(5) and $0 three months ended March 31, 2015 and 2014, respectively)	(50		)	(16		)
Pension and other postretirement adjustment (net of tax of $(2) and $(1) three months ended March 31, 2015 and 2014, respectively)	8			3
Deferred gain on hedging (net of tax of $(1) and $0 for the three months ended March 31, 2015 and 2014, respectively)	1			—
COMPREHENSIVE EARNINGS (LOSS)	(22		)	107
Less: Comprehensive earnings attributable to noncontrolling interests	1			—
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	$	(23	)	$	107

The accompanying Notes to the Consolidated Financial Statements are an integral part of this Statement.

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OWENS CORNING AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(unaudited)

(in millions, except per share amounts)

ASSETS	March 31, 2015			December 31, 2014
CURRENT ASSETS
Cash and cash equivalents	$	77		$	67
Receivables, less allowances of $9 at March 31, 2015, and $10 at December 31, 2014	844			674
Inventories	825			817
Assets held for sale	14			16
Other current assets	235			233
Total current assets	1,995			1,807
Property, plant and equipment, net	2,851			2,899
Goodwill	1,168			1,168
Intangible assets	1,013			1,017
Deferred income taxes	434			444
Other non-current assets	235			220
TOTAL ASSETS	$	7,696		$	7,555
LIABILITIES AND EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	895		$	949
Short-term debt	14			31
Long-term debt – current portion	3			3
Total current liabilities	912			983
Long-term debt, net of current portion	2,274			1,991
Pension plan liability	424			447
Other employee benefits liability	249			252
Deferred income taxes	22			22
Other liabilities	132			130
OWENS CORNING STOCKHOLDERS’ EQUITY
Preferred stock, par value $0.01 per share (a)	—			—
Common stock, par value $0.01 per share (b)	1			1
Additional paid in capital	3,946			3,954
Accumulated earnings	803			805
Accumulated other comprehensive deficit	(591		)	(550		)
Cost of common stock in treasury (c)	(515		)	(518		)
Total Owens Corning stockholders’ equity	3,644			3,692
Noncontrolling interests	39			38
Total equity	3,683			3,730
TOTAL LIABILITIES AND EQUITY	$	7,696		$	7,555

(a) 10 shares authorized; none issued or outstanding at March 31, 2015, and December 31, 2014

(b) 400 shares authorized; 135.5 issued and 118.0 outstanding at March 31, 2015; 135.5 issued and 117.8 outstanding at December 31, 2014

(c) 17.5 shares at March 31, 2015, and 17.7 shares at December 31, 2014

The accompanying Notes to the Consolidated Financial Statements are an integral part of this Statement.

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OWENS CORNING AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited)

(in millions)

	Three Months Ended   March 31,
	2015			2014
NET CASH FLOW USED FOR OPERATING ACTIVITIES
Net earnings	$	18		$	120
Adjustments to reconcile net earnings to cash used for operating activities:
Depreciation and amortization	75			76
Gain on sale of fixed assets	—			(45		)
Deferred income taxes	4			(45		)
Provision for pension and other employee benefits liabilities	5			5
Stock-based compensation expense	8			8
Other non-cash	—			(1		)
Change in working capital	(244		)	(377		)
Pension fund contribution	(14		)	(14		)
Payments for other employee benefits liabilities	(5		)	(6		)
Other	4			7
Net cash flow used for operating activities	(149		)	(272		)
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	(56		)	(51		)
Proceeds from the sale of assets (including alloy) or affiliates	—			(3		)
Net cash flow used for investing activities	(56		)	(54		)
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	529			484
Payments on senior revolving credit and receivables securitization facilities	(247		)	(149		)
Net increase (decrease) in short-term debt	(17		)	24
Cash dividends paid	(39		)	—
Purchases of treasury stock	(19		)	(29		)
Other	7			5
Net cash flow provided by financing activities	214			335
Effect of exchange rate changes on cash	1			(1		)
Net increase in cash and cash equivalents	10			8
Cash and cash equivalents at beginning of period	67			57
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	77		$	65

The accompanying Notes to the Consolidated Financial Statements are an integral part of this Statement.

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OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

1. GENERAL

Unless the context requires otherwise, the terms “Owens Corning,” “Company,” “we” and “our” in this report refer to Owens Corning, a Delaware corporation, and its subsidiaries.

The Consolidated Financial Statements included in this report are unaudited, pursuant to certain rules and regulations of the Securities and Exchange Commission, and include, in the opinion of the Company, adjustments necessary for a fair statement of the results for the periods indicated, which, however, are not necessarily indicative of results which may be expected for the full year. The December 31, 2014, balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States (U.S.). In connection with the Consolidated Financial Statements and Notes included in this report, reference is made to the Consolidated Financial Statements and Notes contained in the Company’s 2014 annual report on Form 10-K. Certain reclassifications have been made to the periods presented for 2014 to conform to the classifications used in the periods presented for 2015.

2. 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.

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OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

2. SEGMENT INFORMATION (continued)

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   March 31,
	2015			2014
Reportable Segments
Composites	$	478		$	477
Insulation	379			355
Roofing	393			497
Total reportable segments	1,250			1,329
Corporate eliminations	(43		)	(51		)
NET SALES	$	1,207		$	1,278

External Customer Sales by Geographic Region
United States	$	816	$	889
Europe	129		149
Asia Pacific	140		137
Other	122		103
NET SALES	$	1,207	$	1,278

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OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

2. SEGMENT INFORMATION (continued)

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   March 31,
	2015			2014
Reportable Segments
Composites	$	60		$	27
Insulation	7			1
Roofing	20			80
Total reportable segments	87			108
Charges related to cost reduction actions	—			(12		)
Other items related to cost reduction actions	(2		)	—
Gain on sale of Hangzhou, China facility	—			45
Net loss related to Hurricane Sandy	—			(2		)
General corporate expense and other	(27		)	(31		)
EBIT	$	58		$	108

3. INVENTORIES

Inventories consist of the following (in millions):

	March 31, 2015		December 31, 2014
Finished goods	$	580	$	568
Materials and supplies	245		249
Total inventories	$	825	$	817

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OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

4. DERIVATIVE FINANCIAL INSTRUMENTS

The Company is exposed to, among other risks, the impact of changes in commodity prices, foreign currency exchange rates, and interest rates in the normal course of business. The Company’s risk management program is designed to manage the exposure and volatility arising from these risks, and utilizes derivative financial instruments to offset a portion of these risks. The Company uses derivative financial instruments only to the extent necessary to hedge identified business risks, and does not enter into such transactions for trading purposes.

The Company generally does not require collateral or other security with counterparties to these financial instruments and is therefore subject to credit risk in the event of nonperformance; however, the Company monitors credit risk and currently does not anticipate nonperformance by other parties. Contracts with counterparties generally contain right of offset provisions. These provisions effectively reduce the Company’s exposure to credit risk in situations where the Company has gain and loss positions outstanding with a single counterparty. It is the Company’s policy to offset on the Consolidated Balance Sheets the amounts recognized for derivative instruments with any cash collateral arising from derivative instruments executed with the same counterparty under a master netting agreement. As of March 31, 2015, and December 31, 2014, the Company did not have any amounts on deposit with any of its counterparties, nor did any of its counterparties have any amounts on deposit with the Company.

The following table presents the fair value of derivatives and hedging instruments and the respective location on the Consolidated Balance Sheets (in millions):

		Fair Value at
	Location	March 31, 2015		December 31, 2014
Derivative assets designated as hedging instruments:
Net investment hedges:
Cross currency swaps	Other current assets	$	3	$	—
Cross currency swaps	Other non current assets	$	9	$	—
Amount of gain recognized in OCI (effective portion)	OCI	$	12	$	—
Fair value hedges:
Interest rate swaps	Other non current assets	$	5	$	—
Derivative liabilities designated as hedging instruments:
Cash flow hedges:
Natural gas and electricity, and foreign exchange contracts	Accounts payable and accrued liabilities	$	6	$	9
Amount of loss recognized in OCI (effective portion)	OCI	$	7	$	8
Fair value hedges:
Interest rate swaps	Other Liabilities	$	—	$	(3	)
Derivative assets not designated as hedging instruments:
Foreign exchange contracts	Other current assets	$	1	$	1
Derivative liabilities not designated as hedging instruments:
Foreign exchange contracts	Accounts payable and accrued liabilities	$	1	$	2

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OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

4. DERIVATIVE FINANCIAL INSTRUMENTS (continued)

The following table presents the impact and respective location of derivative activities on the Consolidated Statements of Earnings (in millions):

		Three Months Ended   March 31,
	Location	2015		2014
Derivative activity designated as hedging instruments:
Natural gas and electricity:
Amount of loss reclassified from OCI into earnings (effective portion)	Cost of sales	$	3	$	(1	)
Derivative activity not designated as hedging instruments:
Foreign currency exchange contract:
Amount of loss recognized in earnings (a)	Other expenses (income), net	$	1	$	(1	)

(a) Losses related to foreign currency derivatives were substantially offset by net revaluation impacts on foreign denominated balance sheet exposures, which were also recorded in other expenses (income), net.

Cash Flow Hedges

The Company uses forward and swap contracts, which qualify as cash flow hedges, to manage forecasted exposure to natural gas and electricity prices. The effective portion of the change in the fair value of cash flow hedges is deferred in accumulated OCI and is subsequently recognized in Cost of Sales on the Consolidated Statements of Earnings for commodity hedges, when the hedged item impacts earnings. Changes in the fair value of derivative assets and liabilities designated as hedging instruments are shown in Other within operating activities on the Consolidated Statements of Cash Flows. Any portion of the change in fair value of derivatives designated as hedging instruments that is determined to be ineffective is recorded in Other expenses (income), net on the Consolidated Statements of Earnings.

The Company currently has natural gas derivatives designated as hedging instruments that mature within 15 months. The Company’s policy for natural gas exposures is to hedge up to 75% of its total forecasted exposures for the next two months, up to 60% of its total forecasted exposures for the following four months, and lesser amounts for the remaining periods. The Company's policy for electricity exposures is to hedge up to 75% of its total forecasted exposures for the current calendar year and up to 65% of its total forecasted exposures for the first calendar year forward. Based on market conditions, approved variation from the standard policy may occur. The Company performs an analysis for effectiveness of its derivatives designated as hedging instruments at the end of each quarter based on the terms of the contract and the underlying item being hedged.

As of March 31, 2015, $7 million of losses included in accumulated OCI on the Consolidated Balance Sheets relate to contracts that are expected to impact earnings during the next 12 months. Transactions and events that are expected to occur over the next 12 months that will necessitate recognizing these deferred amounts include the recognition of the hedged item through earnings.

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OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

4. DERIVATIVE FINANCIAL INSTRUMENTS (continued)

Fair Value Hedges

The Company manages its interest rate exposure by balancing the mixture of its fixed and variable rate instruments through interest rate swaps. The swaps are carried at fair value and recorded as other assets or liabilities, with the offset to long-term debt on the Consolidated Balance Sheets. Changes in the fair value of these swaps and that of the related debt are recorded in Interest expense, net on the Consolidated Statements of Earnings.

Net Investment Hedges

During the first quarter of 2015, the Company entered into cross currency forward contracts to hedge a portion of the net investment in foreign subsidiaries against fluctuations in foreign exchange rates. For derivative instruments that are designated and qualify as hedges of net investments in foreign operations, settlements and changes in fair values of the derivative instruments are recognized in Currency translation adjustment, a component of Accumulated OCI, to offset the changes in the values of the net investments being hedged. Any portion of net investment hedges that is determined to be ineffective is recorded in Other expenses (income), net on the Consolidated Statements of Earnings.

Other Derivatives

The Company uses forward currency exchange contracts to manage existing exposures to foreign exchange risk related to assets and liabilities recorded on the Consolidated Balance Sheets. Gains and losses resulting from the changes in fair value of these instruments are recorded in Other expenses (income), net on the Consolidated Statements of Earnings.

5. GOODWILL AND OTHER INTANGIBLE ASSETS

Intangible assets and goodwill consist of the following (in millions):

March 31, 2015	Weighted Average Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortizable intangible assets:
Customer relationships	19	$	172	$	(75	)	$	97
Technology	20	193		(85		)	108
Franchise and other agreements	11	41		(19		)	22
Indefinite-lived intangible assets:
Trademarks		786		—			786
Total intangible assets		$	1,192	$	(179	)	$	1,013
Goodwill		$	1,168

December 31, 2014	Weighted Average Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortizable intangible assets:
Customer relationships	19	$	172	$	(72	)	$	100
Technology	20	193		(83		)	110
Franchise and other agreements	12	39		(18		)	21
Indefinite-lived intangible assets:
Trademarks		786		—			786
Total intangible assets		$	1,190	$	(173	)	$	1,017
Goodwill		$	1,168

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OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

5.     GOODWILL AND OTHER INTANGIBLE ASSETS (continued)

The changes in the gross carrying amount of amortizable intangible assets by asset group are as follows (in millions):

	Customer relationships		Technology		Franchise and other agreements		Trademarks		Total
Balance at December 31, 2014	$	172	$	193	$	39	$	786	$	1,190
Additional Franchises and Agreements	—		—		2		—		2
Balance at March 31, 2015	$	172	$	193	$	41	$	786	$	1,192

Other Intangible Assets

The Company expects the ongoing amortization expense for amortizable intangible assets to be approximately $22 million in each of the next five fiscal years. The Company’s future cash flows are not materially impacted by its ability to extend or renew agreements related to our amortizable intangible assets.

Goodwill

The Company tests goodwill and indefinite-lived intangible assets for impairment during the fourth quarter of each year, or more frequently should circumstances change or events occur that would more likely than not reduce the fair value of a reporting unit below its carrying amount. No testing was deemed necessary in the first quarter of 2015.

6. PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consist of the following (in millions):

	March 31, 2015			December 31, 2014
Land	$	191		$	196
Buildings and leasehold improvements	785			789
Machinery and equipment	3,389			3,405
Construction in progress	238			233
	4,603			4,623
Accumulated depreciation	(1,752		)	(1,724		)
Property, plant and equipment, net	$	2,851		$	2,899

Machinery and equipment includes certain precious metals used in our production tooling, which comprise approximately 16% and 15% of total machinery and equipment as of March 31, 2015, and December 31, 2014, respectively. Precious metals used in our production tooling are depleted as they are consumed during the production process, which typically represents an annual expense of less than 3% of the outstanding carrying value.

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OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

7. DIVESTITURES

On September 13, 2013, the Company signed an agreement to sell its Composites glass reinforcements facility in Hangzhou, People's Republic of China, for total consideration of approximately $70 million to the Hangzhou Municipal Land Reservation Center and the Development and Construction Management Office of Taoyuan New Zone of Gongshu District in Hangzhou(“Hangzhou Government”), both of which are unrelated third party government entities. In the first quarter of 2014, the Company returned the land to the Hangzhou Government and recorded a net gain of $45 million, which was recorded in Other expenses(income), net on the Consolidated Statements of Earnings (Loss). The balance of the consideration, approximately $14 million, has been recorded in Other current assets on the Consolidated Balance Sheets. Final payment is due upon the Hangzhou government’s completion of demolition activities, currently forecast for the second half of 2015.

8.    ASSETS HELD FOR SALE

Assets held for sale consists of Property, plant and equipment related to two closed facilities in Alcala, Spain and Vado, Italy.

9. WARRANTIES

The Company records a liability for warranty obligations at the date the related products are sold. Adjustments are made as new information becomes available. A reconciliation of the warranty liability is as follows (in millions):

	Three Months Ended March 31, 2015
Beginning balance	$	40
Amounts accrued for current year	5
Settlements of warranty claims	(3		)
Ending balance	$	42

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OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

10. COST REDUCTION ACTIONS

2014 Cost Reduction Actions

In the fourth quarter of 2014, the Company announced organizational changes to streamline its management structure and reduce costs. As part of this action, the Building Materials Group organizational structure was eliminated. In conjunction with this action, the Company recognized $9 million in severance charges for the year ended December 31, 2014. There were no additional costs incurred in the first quarter of 2015.

The Company took actions in the third quarter of 2014 to reduce costs in its Composites segment. These actions related to our decision to not rebuild two sub-scale high cost furnaces that will result in closing a facility in Japan and optimizing a facility in Canada. As a result of these actions, the Company recognized $16 million in severance charges, $3 million in contract termination charges, and $1 million net gain in other related charges for the year ended December 31, 2014. During the first quarter of 2015, the Company recognized $2 million in charges for items related to cost reduction actions.

In addition, in the first quarter of 2014, the Company took actions in our Composites segment related to global workforce reductions and the termination of a contract with a utility services provider. In conjunction with these actions, the Company recorded in the first quarter of 2014 $14 million in charges related to cost reduction actions, of which $11 million is related to severance and $3 million is related to contract termination charges. During the fourth quarter of 2014, the charges related to contract termination were recovered through a settlement. There were no additional costs incurred in the first quarter of 2015.

The following table summarizes the status of the unpaid liabilities from the Company’s 2014 cost reduction actions (in millions):

	Balance at December 31, 2014		Costs Incurred		Payments		Foreign Currency Translation			Balance at March 31, 2015		Cumulative Charges Incurred
Severance	$	31	$	—	$	3	$	(1	)	$	27	$	36
Contract Termination	3		—		—		—			3		3
Total	$	34	$	—	$	3	$	(1	)	$	30	$	39

The Company expects the unpaid balance of these severance and contract termination charges to be paid over the next year.

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OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

11. DEBT

Details of the Company’s outstanding long-term debt are as follows (in millions):

	March 31, 2015		December 31, 2014
6.50% senior notes, net of discount, due 2016	$	158	$	158
9.00% senior notes, net of discount, due 2019	143		143
4.20% senior notes, net of discount, due 2022	600		600
4.20% senior notes, net of discount, due 2024	393		392
7.00% senior notes, net of discount, due 2036	540		540
Accounts receivable securitization facility, maturing in 2018	237		106
Senior revolving credit facility, maturing in 2018	151		—
Various capital leases, due through and beyond 2050	46		47
Fair value adjustment to debt	9		8
Total long-term debt	2,277		1,994
Less – current portion	3		3
Long-term debt, net of current portion	$	2,274	$	1,991

Senior Notes

The Company issued $400 million of 2024 senior notes on November 12, 2014 at 4.20%. The Company paid $4 million in loan costs in connection with the 2024 notes. These costs were deferred and are being amortized over the term of the 2024 notes. Interest on the notes is payable semiannually in arrears on June 1 and December 1 each year, beginning on June 1, 2015. The proceeds from these notes were used to repay $242 million of our 2016 senior notes, $105 million of our 2019 senior notes and to pay down our Senior Revolving Credit Facility.

The Company issued $600 million of 2022 senior notes on October 17, 2012. The proceeds of these notes were used to refinance $250 million of our 2016 senior notes, $100 million of our 2019 senior notes and pay down our Senior Revolving Credit Facility. Interest on the notes is payable semiannually in arrears on June 15 and December 15 each year, beginning on June 15, 2013.

The Company issued $350 million of 2019 senior notes on June 3, 2009. On October 31, 2006, the Company issued $650 million of 2016 senior notes and $540 million of 2036 senior notes. The proceeds of these notes were used to pay certain unsecured and administrative claims, finance general working capital needs and for general corporate purposes.

Collectively, the notes above are referred to as the “Senior Notes.” The Senior Notes are general unsecured obligations of the Company and rank pari passu with all existing and future senior unsecured indebtedness of the Company.

The Senior Notes are fully and unconditionally guaranteed by each of the Company’s current and future domestic subsidiaries that are a borrower or guarantor under the Company’s Credit Agreement (as defined below). The guarantees are unsecured and rank equally in right of payment with all other existing and future senior unsecured indebtedness of the guarantors. The guarantees are effectively subordinated to existing and future secured debt of the guarantors to the extent of the assets securing that indebtedness.

The Company has the option to redeem all or part of the Senior Notes at any time at a “make whole” redemption price. The Company is subject to certain covenants in connection with the issuance of the Senior Notes that it believes are usual and customary. The Company was in compliance with these covenants as of March 31, 2015.

In the fourth quarter of 2011, the Company terminated the interest rate swaps designated to hedge a portion of the 6.5% senior notes due 2016. The swaps were carried at fair value and recorded as other assets or liabilities, with a fair value adjustment to

- 17 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

11. DEBT (continued)

long-term debt on the Consolidated Balance Sheets. The fair value adjustment to debt will be amortized through 2016 as a reduction to interest expense in conjunction with the maturity date of the notes.

On June 28, 2013, the Company entered into interest rate swap agreements effective July 1, 2013 to manage its interest rate exposure by swapping $100 million of fixed rate to variable rate exposure designated against our 4.2% senior notes due 2022. The swaps are carried at fair value and recorded as other assets or liabilities, with a fair value adjustment to long-term debt on the Consolidated Balance Sheets.

Senior Credit Facility

In November 2013, the Company amended the credit agreement (the “Credit Agreement”) for the $800 million multi-currency senior revolving credit facility (the “Senior Revolving Credit Facility”) to extend the maturity to November 2018 and reduce the letters of credit sublimit to $100 million. The Senior Revolving Credit Facility includes both borrowings and letters of credit. Borrowings under the Senior Revolving Credit Facility may be used for general corporate purposes and working capital. The Company has the discretion to borrow under multiple options, which provide for varying terms and interest rates including the United States prime rate or LIBOR plus a spread.

The Senior Revolving Credit Facility contains various covenants, including a maximum allowed leverage ratio and a minimum required interest expense coverage ratio that the Company believes are usual and customary for a senior unsecured credit agreement. The Company was in compliance with these covenants as of March 31, 2015.

As of March 31, 2015, the Company utilized its senior revolving credit facility for $151 million of borrowings and $9 million of outstanding letters of credit, and has $640 million available on this facility.

Receivables Securitization Facility

Included in long-term debt on the Consolidated Balance Sheets are amounts outstanding under a Receivables Purchase Agreement (the “RPA”) that are accounted for as secured borrowings in accordance with ASC 860, Accounting for Transfers and Servicing. Owens Corning Sales, LLC and Owens Corning Receivables LLC, each a subsidiary of the Company, have a $250 million RPA with certain financial institutions. The securitization facility was amended in November of 2013 to extend its maturity to July 2016 and to reduce the size of the facility to $200 million during the months of November, December, and January. The securitization facility was amended in January of 2015 to extend its maturity to January 2018 and remove the seasonal reduction of the facility restoring the full $250 million of facility capacity during the months of November, December, and January. As of March 31, 2015, the Company fully utilized its receivables securitization facility for $237 million in borrowings and $13 million of outstanding letters of credit.

The RPA contains various covenants, including a maximum allowed leverage ratio and a minimum required interest expense coverage ratio that the Company believes are usual and customary for a securitization facility. The Company was in compliance with these covenants as of March 31, 2015.

Owens Corning Receivables LLC’s sole business consists of the purchase or acceptance through capital contributions of trade receivables and related rights from Owens Corning Sales, LLC and the subsequent retransfer of or granting of a security interest in such trade receivables and related rights to certain purchasers party to the RPA. Owens Corning Receivables LLC is a separate legal entity with its own separate creditors who will be entitled, upon its liquidation, to be satisfied out of Owens Corning Receivables LLC’s assets prior to any assets or value in Owens Corning Receivables LLC becoming available to Owens Corning Receivables LLC’s equity holders. The assets of Owens Corning Receivables LLC are not available to pay creditors of the Company or any other affiliates of the Company or Owens Corning Sales, LLC.

Short-Term Debt

At March 31, 2015 and December 31, 2014, short-term borrowings were $14 million and $31 million, respectively. The short-term borrowings for both periods consisted of various operating lines of credit and working capital facilities. Certain of these borrowings are collateralized by receivables, inventories or property. The borrowing facilities are typically for one-year renewable terms. The weighted average interest rate on all short-term borrowings was approximately 4.3% for March 31, 2015 and 7.2% for December 31, 2014.

- 18 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

12. PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

Pension Plans

The Company sponsors defined benefit pension plans. Under the plans, pension benefits are based on an employee’s years of service and, for certain categories of employees, qualifying compensation. Company contributions to these pension plans are determined by an independent actuary to meet or exceed minimum funding requirements. In our Non-U.S. plans, the unrecognized cost of any retroactive amendments and actuarial gains and losses are amortized over the average future service period of plan participants expected to receive benefits. In our U.S. plans, the unrecognized cost of any retroactive amendments and actuarial gains and losses are amortized over the average remaining life expectancy of the inactive participants as substantially all of the plan participants are inactive.

The following tables provide information regarding pension expense recognized (in millions):

	Three Months Ended March 31, 2015									Three Months Ended March 31, 2014
	U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
Components of Net Periodic Pension Cost
Service cost	$	2		$	1		$	3		$	2		$	1		$	3
Interest cost	11			5			16			12			6			18
Expected return on plan assets	(15		)	(6		)	(21		)	(14		)	(7		)	(21		)
Amortization of actuarial loss	4			1			5			2			1			3
Net periodic pension cost	$	2		$	1		$	3		$	2		$	1		$	3

The Company expects to contribute approximately $48 million in cash to the United States Pension Plans and another $14 million to non-United States plans during 2015. The Company made cash contributions of approximately $14 million to the plans during the three months ended March 31, 2015.

Postemployment and Postretirement Benefits Other than Pension Plans

The Company maintains healthcare and life insurance benefit plans for certain retired employees and their dependents. The health care plans in the United States are non-funded and pay either (1) stated percentages of covered medically necessary expenses, after subtracting payments by Medicare or other providers and after stated deductibles have been met, or (2) fixed amounts of medical expense reimbursement.

The following table provides the components of net periodic benefit cost for aggregated United States and non-United States Plans for the periods indicated (in millions):

	Three Months Ended   March 31,
	2015			2014
Components of Net Periodic Benefit Cost
Service cost	$	1		$	1
Interest cost	2			3
Amortization of prior service cost	(1		)	(1		)
Amortization of actuarial gain	—			(1		)
Net periodic benefit cost	$	2		$	2

- 19 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

13.    CONTINGENT LIABILITIES AND OTHER MATTERS

The Company is involved in various legal proceedings relating to employment, product liability and other matters (collectively, “Proceedings”). The Company regularly reviews the status of such Proceedings with legal counsel. Liabilities for such Proceedings are recorded when it is probable that the liability has been incurred and when the amount of the liability can be reasonably estimated. Liabilities are adjusted when additional information becomes available. Management believes that the amount of any reasonably possible losses in excess of any amounts accrued, if any, with respect to such Proceedings or any other known claims, including the matters described below under the caption Environmental Matters (the “Environmental Matters”) will not be material to the Company’s financial statements. Management believes that the ultimate disposition of the Proceedings and the Environmental Matters will not have a material adverse effect on the Company’s operations or financial condition taken as a whole.

Litigation

The Company is involved in litigation from time to time in the regular course of its business. The Company believes that adequate provisions for resolution of all contingencies, claims and pending litigation have been made for probable losses that are reasonably estimable. The Company does not believe that the ultimate outcome of these actions will have a material adverse effect on its financial condition, results of operations or cash flows.

Environmental Matters

The Company has been deemed by the United States Environmental Protection Agency to be a Potentially Responsible Party (“PRP”) with respect to certain sites under the Comprehensive Environmental Response Compensation and Liability Act. The Company has also been deemed a PRP under similar state or local laws and in other instances other PRPs have brought suits against it as a PRP for contribution under such federal, state, or local laws. At March 31, 2015, the Company had environmental remediation liabilities as a PRP at 21 sites where it has a continuing legal obligation to either complete remedial actions or contribute to the completion of remedial actions as part of a group of PRPs. Environmental liability estimates may be affected by changing determinations of what constitutes an environmental exposure or an acceptable level of cleanup. To the extent that the required remediation procedures or timing of those procedures change, additional contamination is identified, or the financial condition of other PRPs is adversely affected, the estimate of our environmental liabilities may change. For these sites the Company estimates a reserve to reflect environmental liabilities that have been asserted or are probable of assertion, in which liabilities are probable and reasonably estimable. At March 31, 2015, our reserve for such liabilities was $3 million. Changes in required remediation procedures or timing of those procedures at existing legacy sites, or discovery of contamination at additional sites, could result in increases to our environmental obligations.

- 20 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

14.     STOCK COMPENSATION

Stock Plans

On April 18, 2013, the Company’s stockholders approved the Owens Corning 2013 Stock Plan (the “2013 Stock Plan”) which replaced the 2010 Stock Plan. The 2013 Stock Plan authorizes grants of stock options, stock appreciation rights, restricted stock awards, restricted stock units, bonus stock awards and performance stock awards. Under the 2013 Stock Plan, 1.5 million shares of common stock may be granted in addition to the shares of Company common stock that rolled over from the 2010 Stock Plan. Such shares of common stock include shares that were available but not granted, or which were granted but were not issued or delivered due to expiration, termination, cancellation or forfeiture of such awards. There will be no future grants made under the 2010 Stock Plan. At March 31, 2015, the number of shares remaining available under the 2013 Stock Plan for all stock awards was 1.8 million.

Stock Options

The Company did not grant any stock options during the quarter ended March 31, 2015. The Company calculates a weighted-average grant-date fair value using a Black-Scholes valuation model for options granted. Compensation expense for options is measured based on the fair market value of the option on the date of grant, and is recognized on a straight-line basis over a four year vesting period. In general, the exercise price of each option awarded was equal to the market price of the Company’s common stock on the date of grant and an option’s maximum term is 10 years.

During the three months ended March 31, 2015 and 2014, the Company recognized expense of $1 million related to the Company’s stock options, respectively. As of March 31, 2015, there was $7 million of total unrecognized compensation cost related to stock options. That cost is expected to be recognized over a weighted-average period of 2.39 years. The total aggregate intrinsic value of options outstanding as of March 31, 2015 and 2014 was $31 million and $36 million, respectively.

The following table summarizes the Company’s stock option activity for the three months ended March 31, 2015:

	Three Months Ended March 31, 2015
	Number of Options		Weighted- Average Exercise Price
Beginning Balance	2,754,895		$	31.04
Exercised	(236,875	)	29.34
Forfeited	(19,500	)	37.84
Ending Balance	2,498,520		$	31.15

The following table summarizes information about the Company’s options outstanding and exercisable:

	Options Outstanding				Options Exercisable
	Options Outstanding	Weighted-Average			Number Exercisable at March 31, 2015	Weighted-Average
Range of Exercise Prices		Remaining Contractual Life	Exercise Price			Remaining Contractual Life	Exercise Price
$13.89-$42.16	2,498,520	4.71	$	31.15	2,011,245	4.01	$	29.40

- 21 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

14. STOCK COMPENSATION (continued)

Restricted Stock Awards and Restricted Stock Units

The Company has granted restricted stock awards and restricted stock units (collectively referred to as “restricted stock”) as a part of its long-term incentive plan. Compensation expense for restricted stock is measured based on the market price of the stock at date of grant and is recognized on a straight-line basis over the four-year vesting period. Stock restrictions are subject to alternate vesting plans for death, disability, approved early retirement and involuntary termination, over various periods ending in 2019.

During the three months ended March 31, 2015 and 2014 the Company recognized expense of $4 million, respectively, related to the Company’s restricted stock. As of March 31, 2015, there was $39 million of total unrecognized compensation cost related to restricted stock. That cost is expected to be recognized over a weighted-average period of 3.11 years. The total fair value of shares vested during the three months ended March 31, 2015 and 2014 was $15 million and $13 million, respectively.

A summary of the status of the Company’s plans that had restricted stock issued as of March 31, 2015, and changes during the three months ended March 31, 2015, are presented below:

	Three Months Ended March 31, 2015
	Number of Shares		Weighted-Average Grant-Date Fair Value
Beginning Balance	1,727,741		$	33.58
Granted	552,753		39.37
Vested	(419,147	)	35.83
Forfeited	(30,772	)	37.49
Ending Balance	1,830,575		$	34.89

Performance Stock Awards and Performance Stock Units

The Company has granted performance stock awards and performance stock units (collectively referred to as “PSUs”) as a part of its long-term incentive plan. All outstanding performance grants will fully settle in stock. The amount of stock ultimately distributed from the 2015 grants is contingent on meeting internal company-based metrics or an external-based stock performance metric. The amount of stock ultimately distributed from 2014 and prior grants is contingent on meeting an external based stock performance metric.

In the first three months of 2015, the Company granted both internal company-based and external-based metric PSUs.

Internal based metrics

The internal company-based metrics vests after a three-year period and are based on return on invested capital over a three-year period. The amount of stock distributed will vary from 0% to 300% of PSUs awarded depending on performance versus the company-based performance metrics.

The initial fair value for all internal company-based metric PSUs assumes that the performance goals will be achieved and is based on the grant date stock price. This assumption is monitored quarterly and if it becomes probable that such goals will not be achieved or will be exceeded, compensation expense recognized will be adjusted and previous surplus compensation expense recognized will be reversed or additional expense will be recognized.

External based metrics

The external-based metric vests after a three-year period. Outstanding grants issued in 2015 forward will be based on the Company's total stockholder return relative to the performance of the S&P Building & Construction Industry Index and outstanding grants issued prior to 2015 are based on the Company's total stockholder return relative to the performance of the companies in the S&P 500 Index. The amount of stock distributed will vary from 0% to 200% of PSUs awarded depending on the relative stockholder return performance.

- 22 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

14. STOCK COMPENSATION (continued)

The Company estimated the fair value of the external-based metric performance stock grants using a Monte Carlo simulation that uses various assumptions that include expected volatility of 29.2%, and a risk free interest rate of 1.1% both of which were based on an expected term of 2.90 years. Expected volatility was based on a benchmark study of our peers. The risk-free interest rate was based on zero coupon United States Treasury bills at the time of grant. The expected term represents the period from the grant date to the end of the three-year performance period. Compensation expense for external based metric PSUs is measured based on the grant date fair value and is recognized on a straight-line basis over the vesting period. Vesting will be accelerated in the case of death or disability, and awards earned will be paid at the end of the three-year period.

During the three months ended March 31, 2015, and 2014 the Company recognized expense of $2 million related to the Company’s PSUs, respectively. As of March 31, 2015, there was $16 million of total unrecognized compensation cost related to PSUs. That cost is expected to be recognized over a weighted-average period of 2.20 years.

A summary of the status of the Company’s plans that had PSUs issued as of March 31, 2015, and changes during the three months ended March 31, 2015, is presented below:

	Three Months Ended March 31, 2015
	Number of PSUs		Weighted-Average Grant-Date Fair Value
Beginning Balance	416,250		$	49.53
Granted	251,600		44.98
Forfeited	(15,850	)	50.16
Ending Balance	652,000		$	47.76

Employee Stock Purchase Plan

On April 18, 2013, the Company’s stockholders approved the Owens Corning Employee Stock Purchase Plan (“ESPP”). The ESPP is a tax-qualified plan under Section 423 of the Internal Revenue Code. The purchase price of shares purchased under the ESPP is equal to 85% of the lower of the fair market value of shares of Owens Corning common stock at the beginning or ending of the offering period, which is a six-month period ending on May 31 and November 30 of each year. There are 2 million shares available for purchase under the ESPP as of its approval date. During the three months ended March 31, 2015 and 2014, the Company had expense of $0.5 million and $0.4 million. respectively. As of March 31, 2015, there was $1 million of total unrecognized compensation cost related to the ESPP.

- 23 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

15.     EARNINGS PER SHARE

The following table summarizes the number of shares outstanding as well as our basic and diluted earnings per-share (in millions, except per share amounts):

	Three Months Ended   March 31,
	2015		2014
Net earnings attributable to Owens Corning	$	18	$	120
Weighted-average number of shares outstanding used for basic earnings per share	117.8		117.8
Non-vested restricted and performance shares	0.3		0.4
Options to purchase common stock	0.4		0.5
Weighted-average number of shares outstanding and common equivalent shares used for diluted earnings per share	118.5		118.7
Earnings per common share attributable to Owens Corning common stockholders:
Basic	$	0.15	$	1.02
Diluted	$	0.15	$	1.01

Basic earnings per share is calculated by dividing earnings attributable to Owens Corning by the weighted-average number of shares of the Company’s common stock outstanding during the period. Outstanding shares consist of issued shares less treasury stock.

In 2012, the Company approved a new share buy-back program under which the Company is authorized to repurchase up to 10 million shares of the Company’s outstanding common stock (the “Repurchase Program”). The Repurchase Program authorizes the Company to repurchase shares through the open market, in privately negotiated or other transactions. The actual number of shares repurchased will depend on timing, market conditions and other factors and will be at the Company’s discretion. The Company repurchased 0.3 million shares of its common stock for $13 million during the three months ended March 31, 2015 under the Repurchase Program. As of March 31, 2015, 7.4 million shares remain available for repurchase under the Repurchase Program.

For the three months ended March 31, 2015, the number of shares used in the calculation of diluted earnings per share did not include 0.1 million non-vested Restricted and Performance shares and 0.6 million of options to purchase common stock, due to their anti-dilutive effect.

For the three months ended March 31, 2014, the number of shares used in the calculation of diluted earnings per share did not include 0.5 million non-vested Restricted and Performance shares and 0.7 million of options to purchase common stock, due to their anti-dilutive effect.

16.     FAIR VALUE MEASUREMENT

The Company classifies and discloses assets and liabilities carried at fair value in one of the following three categories:

Level 1: Quoted market prices in active markets for identical assets or liabilities.

Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data.

Level 3: Unobservable inputs that are not corroborated by market data.

Items Measured at Fair Value

The carrying value of cash and cash equivalents, accounts receivable and short-term debt approximate fair value because of the short-term maturity of the instruments.

Derivatives

The Company measures the value of its natural gas hedge contracts, electricity contracts and foreign currency forward contracts using Level 2 inputs. The fair value of the Company’s natural gas hedges and electricity contracts is determined by a mark to

- 24 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

16.     FAIR VALUE MEASUREMENT (continued)

market valuation based on forward curves using observable market prices and the fair value of its foreign currency forward contracts is determined using observable market transactions in over-the-counter markets.

Contingent consideration

In connection with our third quarter 2014 acquisition, we recorded contingent consideration pertaining to amounts payable to the former owners related to a put/call option that is to be determined based on a multiple of 2016 EBITDA that contains a cap of $7 million and a floor of $4 million. The valuation of contingent consideration uses assumptions we believe would be made by a market participant and has been based on a significant input not observable in the market. The significant unobservable input used in the fair value measurement of our contingent consideration includes our internal forecast of business performance, which is a Level 3 input. The fair value of the put/call as of March 31, 2015 is $6 million and has been recorded in Other liabilities on the Consolidated Balance Sheet. The change in fair value of $1 million for the three months ended March 31, 2015 was recognized in Interest expense, net on the Consolidated Statement of Earnings.

The following table summarizes the fair values and levels within the fair value hierarchy in which the fair value measurements fall as of March 31, 2015 (in millions):

	Total Measured at Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Derivative assets	$	18	$	—	$	18	$	—
Liabilities:
Derivative liabilities	$	7	$	—	$	7	$	—
Contingent consideration	6		—		—		6
Total liabilities	$	13	$	—	$	7	$	6

The following table summarizes the fair values and levels within the fair value hierarchy in which the fair value measurements fall as of December 31, 2014 (in millions):

	Total Measured at Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Derivative assets	$	1	$	—	$	1	$	—
Liabilities:
Derivative liabilities	$	8	$	—	$	8	$	—
Contingent consideration	5		—		—		5
Total liabilities	$	13	$	—	$	8	$	5

- 25 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

16.     FAIR VALUE MEASUREMENT (continued)

Items Disclosed at Fair Value

Long-term debt

The following table shows the fair value of the Company’s long-term debt as calculated based on quoted market prices for the same or similar issues (Level 2 input), or on the current rates offered to the Company for debt of the same remaining maturities:

	March 31, 2015		December 31, 2014
6.50% senior notes, net of discount, due 2016	108	%	109	%
9.00% senior notes, net of discount, due 2019	121	%	119	%
4.20% senior notes, net of discount, due 2022	105	%	101	%
4.20% senior notes, net of discount, due 2024	103	%	99	%
7.00% senior notes, net of discount, due 2036	124	%	124	%

The Company determined that the book value of the remaining long-term debt instruments approximates market value.

17.     INCOME TAXES

Income tax expense (benefit) for the three months ended March 31, 2015 was $13 million, for an effective tax rate of 41%. The difference between the effective tax rate and the U.S. federal statutory rate tax of 35% is primarily attributable to the tax accounting treatment of various locations which are currently in a loss position and other discrete adjustments in the first quarter 2015.

Income tax expense (benefit) for the three months ended March 31, 2014, was ($39) million for an effective tax rate benefit of (48)%. The difference between the effective tax rate benefit and the U.S. federal statutory tax rate of 35% is primarily attributable to the resolution of an uncertain tax position upon receiving final notification from the IRS that it had completed its audit examination for the taxable years 2008 through 2010 and the reversal of a valuation allowance recorded in prior years against certain European net deferred tax assets which cumulatively totaled $78 million. The remaining differences relate to other discrete adjustments in the quarter and the accounting treatment of various locations which were in a loss position in the first quarter 2014.

18.    CHANGES IN ACCUMULATED OTHER COMPREHENSIVE DEFICIT

The following table summarizes the changes in accumulated other comprehensive income (deficit) (“AOCI”) for the three months ended March 31, 2015 (in millions):

	Cash Flow Hedge Activity			Defined Benefit Pension Plan Activity			OCI Valuation Allowance Activity			Foreign Currency Translation Adjustment			Total
Balance as of December 31, 2014, net of tax	$	(5	)	$	(290	)	$	(122	)	$	(133	)	$	(550	)
Amounts classified into AOCI, net of tax (a)	1			2			2			(50		)	(45		)
Amounts reclassified from AOCI, net of tax	—			4			—			—			4
Change in AOCI, net of tax	1			6			2			(50		)	(41		)
Balance as of March 31, 2015, net of tax	$	(4	)	$	(284	)	$	(120	)	$	(183	)	$	(591	)

(a) $8 million of the amounts classified into AOCI, net of tax from Foreign Currency Translation Adjustment was due to the company's net investment hedge, as discussed in Note 4.

- 26 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

18. CHANGES IN ACCUMULATED OTHER COMPREHENSIVE DEFICIT (continued)

The following table summarizes the changes in accumulated other comprehensive income (deficit) (“AOCI”) for the three months ended March 31, 2014 (in millions):

	Cash Flow Hedge Activity		Defined Benefit Pension Plan Activity			OCI Valuation Allowance Activity			Foreign Currency Translation Adjustment			Total
Balance as of December 31, 2013, net of tax	$	—	$	(184	)	$	(115	)	$	2		$	(297	)
Amounts classified into AOCI, net of tax	—		4			—			(16		)	(12		)
Amounts reclassified from AOCI, net of tax	—		(1		)	—			—			(1		)
Change in AOCI, net of tax	—		3			—			(16		)	(13		)
Balance as of March 31, 2014, net of tax	$	—	$	(181	)	$	(115	)	$	(14	)	$	(310	)

The following table presents the impact and respective location of AOCI reclassifications on the Consolidated Statements of Earnings, net of tax (in millions):

	Three Months Ended   March 31,
	2015		2014
Defined Benefit Pension Plan Activity:
Cost of sales	$	4	$	(1	)
Total reclassifications from AOCI	$	4	$	(1	)

- 27 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

19.    ACCOUNTING PRONOUNCEMENTS

In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” (“ASU 2014-09”). ASU 2014-09 outlines a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This new revenue recognition model provides a five-step analysis in determining when and how revenue is recognized. The new model will require revenue recognition to depict the transfer of promised goods or services to customers in an amount that reflects the consideration a company expects to receive in exchange for those goods or services. The Company is currently assessing the impact that adopting this new accounting guidance will have on its consolidated financial statements and footnote disclosures. ASU 2014-09 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016, and early adoption is not permitted. Accordingly, the standard is effective for the Company on January 1, 2017.

In April 2015, the FASB issued ASU No. 2015-03, "Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs ("ASU 2015-03"). ASU 2015-03 requires debt issuance costs to be presented in the balance sheet as a direct deduction from the carrying value of the associated debt liability, consistent with the presentation of a debt discount. Prior to the issuance of the standard, debt issuance costs were required to be presented in the balance sheet as an asset. The Company is currently assessing the impact that adopting this new accounting guidance will have on its consolidated financial statements and footnote disclosures. ASU 2015-03 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015. Accordingly, the standard is effective for the Company on January 1, 2016.

20. CONDENSED CONSOLIDATING FINANCIAL STATEMENTS

The following Condensed Consolidating Financial Statements present the financial information required with respect to those entities which guarantee certain of the Company’s debt. The Condensed Consolidating Financial Statements are presented on the equity method. Under this method, the investments in subsidiaries are recorded at cost and adjusted for the Company’s share of the subsidiaries’ cumulative results of operations, capital contributions, distributions and other equity changes. The principal elimination entries eliminate investment in subsidiaries and intercompany balances and transactions.

Guarantor and Nonguarantor Financial Statements

The Senior Notes and the Senior Revolving Credit Facility are guaranteed, fully, unconditionally and jointly and severally, by each of Owens Corning’s current and future 100% owned material domestic subsidiaries that is a borrower or a guarantor under Owens Corning’s Credit Agreement, which permits changes to the named guarantors in certain situations (collectively, the “Guarantor Subsidiaries”). The remaining subsidiaries have not guaranteed the Senior Notes and the Senior Revolving Credit Facility (collectively, the “Nonguarantor Subsidiaries”).

- 28 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

20.    CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (continued)

OWENS CORNING AND SUBSIDIARIES

CONSOLIDATING STATEMENT OF EARNINGS

FOR THE THREE MONTHS ENDEDMARCH 31, 2015

(in millions)

	Parent			Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Consolidated
NET SALES	$	—		$	841	$	461	$	(95	)	$	1,207
COST OF SALES	—			721		372		(95		)	998
Gross margin	—			120		89		—			209
OPERATING EXPENSES
Marketing and administrative expenses	32			68		29		—			129
Science and technology expenses	—			14		3		—			17
Charges related to cost reduction actions	—			—		—		—			—
Other expenses (income), net	(8		)	6		7		—			5
Total operating expenses	24			88		39		—			151
EARNINGS BEFORE INTEREST AND TAXES	(24		)	32		50		—			58
Interest expense, net	24			1		1		—			26
EARNINGS BEFORE TAXES	(48		)	31		49		—			32
Less: Income tax expense (benefit)	(15		)	9		19		—			13
Equity in net earnings of subsidiaries	51			29		—		(80		)	—
NET EARNINGS	18			51		30		(80		)	19
Less: Net earnings attributable to noncontrolling interests	—			—		1		—			1
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	$	18		$	51	$	29	$	(80	)	$	18

- 29 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

20.    CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (continued)

OWENS CORNING AND SUBSIDIARIES

CONSOLIDATING STATEMENT OF EARNINGS

FOR THE THREE MONTHS ENDEDMARCH 31, 2014

(in millions)

	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
NET SALES	$	—		$	911		$	456		$	(89	)	$	1,278
COST OF SALES	—			751			382			(89		)	1,044
Gross margin	—			160			74			—			234
OPERATING EXPENSES
Marketing and administrative expenses	32			66			34			—			132
Science and technology expenses	—			15			4			—			19
Charges related to cost reduction actions	—			1			11			—			12
Other expenses (income), net	(10		)	2			(29		)	—			(37		)
Total operating expenses	22			84			20			—			126
EARNINGS BEFORE INTEREST AND TAXES	(22		)	76			54			—			108
Interest expense, net	26			1			—			—			27
EARNINGS BEFORE TAXES	(48		)	75			54			—			81
Less: Income tax expense (benefit)	(18		)	(13		)	(8		)	—			(39		)
Equity in net earnings of subsidiaries	150			62			—			(212		)	—
NET EARNINGS	120			150			62			(212		)	120
Less: Net earnings attributable to noncontrolling interests	—			—			—			—			—
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	$	120		$	150		$	62		$	(212	)	$	120

- 30 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

20.    CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (continued)

OWENS CORNING AND SUBSIDIARIES

CONSOLIDATING STATEMENT OF COMPREHENSIVE EARNINGS (LOSS)

FOR THE THREE MONTHS ENDEDMARCH 31, 2015

(in millions)

	Parent			Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Consolidated
NET EARNINGS	$	18		$	51	$	30	$	(80	)	$	19
Currency translation adjustment (net of tax)	(50		)	—		—		—			(50		)
Pension and other postretirement adjustment (net of tax)	8			—		—		—			8
Deferred gain on hedging (net of tax)	1			—		—		—			1
COMPREHENSIVE EARNINGS (LOSS)	(23		)	51		30		(80		)	(22		)
Less: Comprehensive earnings attributable to noncontrolling interests	—			—		1		—			1
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	$	(23	)	$	51	$	29	$	(80	)	$	(23	)

- 31 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

20.    CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (continued)

OWENS CORNING AND SUBSIDIARIES

CONSOLIDATING STATEMENT OF COMPREHENSIVE EARNINGS (LOSS)

FOR THE THREE MONTHS ENDEDMARCH 31, 2014

(in millions)

	Parent			Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Consolidated
NET EARNINGS	$	120		$	150	$	62	$	(212	)	$	120
Currency translation adjustment (net of tax)	(16		)	—		—		—			(16		)
Pension and other postretirement adjustment (net of tax)	3			—		—		—			3
Deferred gain on hedging (net of tax)	—			—		—		—			—
COMPREHENSIVE EARNINGS (LOSS)	107			150		62		(212		)	107
Less: Comprehensive earnings attributable to noncontrolling interests	—			—		—		—			—
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	$	107		$	150	$	62	$	(212	)	$	107

- 32 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

20.    CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (continued)

OWENS CORNING AND SUBSIDIARIES

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF MARCH 31, 2015

(in millions)

ASSETS	Parent			Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
CURRENT ASSETS
Cash and cash equivalents	$	—		$	4	$	73	$	—		$	77
Receivables, less allowances	—			—		844		—			844
Due from affiliates	—			2,666		76		(2,742		)	—
Inventories	—			540		285		—			825
Assets held for sale	—			—		14		—			14
Other current assets	8			138		89		—			235
Total current assets	8			3,348		1,381		(2,742		)	1,995
Investment in subsidiaries	7,502			2,457		559		(10,518		)	—
Due from affiliates	—			—		826		(826		)	—
Property, plant and equipment, net	359			1,404		1,088		—			2,851
Goodwill	—			1,127		41		—			1,168
Intangible assets	—			985		231		(203		)	1,013
Deferred income taxes	31			380		23		—			434
Other non-current assets	42			66		127		—			235
TOTAL ASSETS	$	7,942		$	9,767	$	4,276	$	(14,289	)	$	7,696
LIABILITIES AND EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	57		$	454	$	384	$	—		$	895
Due to affiliates	1,816			—		926		(2,742		)	—
Short-term debt	—			—		14		—			14
Long-term debt – current portion	—			1		2		—			3
Total current liabilities	1,873			455		1,326		(2,742		)	912
Long-term debt, net of current	2,004			15		255		—			2,274
Due to affiliates	—			826		—		(826		)	—
Pension plan liability	302			—		122		—			424
Other employee benefits liability	—			235		14		—			249
Deferred income taxes	—			—		22		—			22
Other liabilities	119			175		41		(203		)	132
OWENS CORNING STOCKHOLDERS’ EQUITY
Preferred stock	—			—		—		—			—
Common stock	1			—		—		—			1
Additional paid in capital	3,946			6,433		1,763		(8,196		)	3,946
Accumulated earnings	803			1,628		694		(2,322		)	803
Accumulated other comprehensive deficit	(591		)	—		—		—			(591		)
Cost of common stock in treasury	(515		)	—		—		—			(515		)
Total Owens Corning stockholders’ equity	3,644			8,061		2,457		(10,518		)	3,644
Noncontrolling interests	—			—		39		—			39
Total equity	3,644			8,061		2,496		(10,518		)	3,683
TOTAL LIABILITIES AND EQUITY	$	7,942		$	9,767	$	4,276	$	(14,289	)	$	7,696

- 33 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

20.    CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (continued)

OWENS CORNING AND SUBSIDIARIES

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF DECEMBER 31, 2014

(in millions)

ASSETS	Parent			Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
CURRENT ASSETS
Cash and cash equivalents	$	—		$	1	$	66	$	—		$	67
Receivables, less allowances	—			—		674		—			674
Due from affiliates	—			2,858		—		(2,858		)	—
Inventories	—			527		290		—			817
Assets held for sale	—			—		16		—			16
Other current assets	7			132		94		—			233
Total current assets	7			3,518		1,140		(2,858		)	1,807
Investment in subsidiaries	7,504			2,590		558		(10,652		)	—
Due from affiliates	—			—		881		(881		)	—
Property, plant and equipment, net	359			1,397		1,143		—			2,899
Goodwill	—			1,127		41		—			1,168
Intangible assets	—			989		238		(210		)	1,017
Deferred income taxes	35			380		29		—			444
Other non-current assets	30			62		128		—			220
TOTAL ASSETS	$	7,935		$	10,063	$	4,158	$	(14,601	)	$	7,555
LIABILITIES AND EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	47		$	667	$	235	$	—		$	949
Due to affiliates	1,913			—		945		(2,858		)	—
Short-term debt	—			25		6		—			31
Long-term debt – current portion	—			1		2		—			3
Total current liabilities	1,960			693		1,188		(2,858		)	983
Long-term debt, net of current portion	1,851			15		125		—			1,991
Due to affiliates	—			881		—		(881		)	—
Pension plan liability	310			—		137		—			447
Other employee benefits liability	—			237		15		—			252
Deferred income taxes	—			—		22		—			22
Other liabilities	122			175		43		(210		)	130
OWENS CORNING STOCKHOLDERS’ EQUITY
Preferred stock	—			—		—		—			—
Common stock	1			—		—		—			1
Additional paid in capital	3,954			6,483		1,927		(8,410		)	3,954
Accumulated earnings	805			1,579		663		(2,242		)	805
Accumulated other comprehensive deficit	(550		)	—		—		—			(550		)
Cost of common stock in treasury	(518		)	—		—		—			(518		)
Total Owens Corning stockholders’ equity	3,692			8,062		2,590		(10,652		)	3,692
Noncontrolling interests	—			—		38		—			38
Total equity	3,692			8,062		2,628		(10,652		)	3,730
TOTAL LIABILITIES AND EQUITY	$	7,935		$	10,063	$	4,158	$	(14,601	)	$	7,555

- 34 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

20.    CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (continued)

OWENS CORNING AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THREE MONTHS ENDEDMARCH 31, 2015

(in millions)

	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations		Consolidated
NET CASH FLOW USED FOR OPERATING ACTIVITIES	$	—		$	(157	)	$	8		$	—	$	(149	)
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	(3		)	(43		)	(10		)	—		(56		)
Proceeds from the sale of assets (including alloy) or affiliates	—			—			—			—		—
Net cash flow used for investing activities	(3		)	(43		)	(10		)	—		(56		)
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	398			—			131			—		529
Payments on senior revolving credit and receivables securitization facilities	(247		)	—			—			—		(247		)
Net increase (decrease) in short-term debt	—			(25		)	8			—		(17		)
Cash dividends paid	(39		)	—			—			—		(39		)
Purchases of treasury stock	(19		)	—			—			—		(19		)
Other intercompany loans	(97		)	228			(131		)	—		—
Other	7			—			—			—		7
Net cash flow provided by financing activities	3			203			8			—		214
Effect of exchange rate changes on cash	—			—			1			—		1
Net increase in cash and cash equivalents	—			3			7			—		10
Cash and cash equivalents at beginning of period	—			1			66			—		67
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	—		$	4		$	73		$	—	$	77

- 35 -

OWENS CORNING AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(unaudited)

20.    CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (continued)

OWENS CORNING AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THREE MONTHS ENDEDMARCH 31, 2014

(in millions)

	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations		Consolidated
NET CASH FLOW USED FOR OPERATING ACTIVITIES	$	—		$	(222	)	$	(50	)	$	—	$	(272	)
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	(3		)	(26		)	(22		)	—		(51		)
Proceeds from the sale of assets (including alloy) or affiliates	—			—			(3		)	—		(3		)
Net cash flow used for investing activities	(3		)	(26		)	(25		)	—		(54		)
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	433			—			51			—		484
Payments on senior revolving credit and receivables securitization facilities	(149		)	—			—			—		(149		)
Net increase (decrease) in short-term debt	—			1			23			—		24
Cash dividends paid	—			—			—			—		—
Purchase of treasury stock	(29		)	—			—			—		(29		)
Other intercompany loans	(257		)	247			10			—		—
Other	5			—			—			—		5
Net cash flow provided by financing activities	3			248			84			—		335
Effect of exchange rate changes on cash	—			—			(1		)	—		(1		)
Net increase in cash and cash equivalents	—			—			8			—		8
Cash and cash equivalents at beginning of period	—			3			54			—		57
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	—		$	3		$	62		$	—	$	65

- 36 -

ITEM 2.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This Management’s Discussion and Analysis (“MD&A”) is intended to help investors understand Owens Corning, our operations and our present business environment. MD&A is provided as a supplement to, and should be read in conjunction with, our Consolidated Financial Statements and the accompanying Notes thereto contained in this report. Unless the context requires otherwise, the terms “Owens Corning,” “Company,” “we” and “our” in this report refer to Owens Corning and its subsidiaries.

GENERAL

Owens Corning is a leading global producer of glass fiber reinforcements and other materials for composites and of residential and commercial building materials. 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 and business operations now contain three reportable segments: Composites, Insulation and Roofing. Through these lines of business, we manufacture and sell products worldwide. We maintain leading market positions in many of our major product categories.

EXECUTIVE OVERVIEW

The Company reported $58 million in earnings before interest and taxes (“EBIT”) for the first quarter of 2015 compared to $108 million in the same period of 2014. The Company generated $60 million in adjusted earnings before interest and taxes (“Adjusted EBIT”) for the first quarter of 2015 compared to $77 million in the same period of 2014. See below for further information regarding EBIT and Adjusted EBIT, including the reconciliation to net earnings attributable to Owens Corning. Improved EBIT performance of $33 million in our Composites segment and $6 million in our Insulation segment were more than offset by the $60 million decrease in EBIT in our Roofing segment. Excluding restructuring actions and adjusting items, Corporate Adjusted EBIT losses decreased by $4 million.

In our Composites segment, EBIT in the first quarter of 2015 was $60 million compared to $27 million in the same period in 2014 driven primarily by higher selling prices and favorable mix. In our Insulation segment, EBIT in the first quarter of 2015 was $7 million compared to $1 million in the same period in 2014 driven primarily by higher selling prices. In our Roofing segment, EBIT in the first quarter of 2015 was $20 million compared to $80 million in the same period in 2014 driven primarily by lower sales volumes and lower selling prices.

The Company maintains a strong balance sheet with ample liquidity. We have access to an $800 million senior revolving credit facility with a November 2018 maturity date and a $250 million receivables securitization facility with a January 2018 maturity date. The Company has no significant debt maturities before the fourth quarter of 2016.

In the first quarter of 2015, the Company used $149 million in cash flow for operating activities compared to $272 million used in the same period in 2014. This decrease in cash used for operating activities was primarily due to working capital changes.

The Company repurchased 0.3 million shares of the Company's common stock for $13 million in the first quarter of 2015 under a previously announced repurchase program. As of March 31, 2015, 7.4 million shares remain available for repurchase under the authorization program.

- 37 -

ITEM 2.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

RESULTS OF OPERATIONS

Consolidated Results (in millions)

	Three Months Ended   March 31,
	2015			2014
Net sales	$	1,207		$	1,278
Gross margin	$	209		$	234
% of net sales	17		%	18		%
Charges related to cost reduction actions	$	—		$	12
Earnings before interest and taxes	$	58		$	108
Interest expense, net	$	26		$	27
Income tax expense (benefit)	$	13		$	(39	)
Net earnings attributable to Owens Corning	$	18		$	120

The Consolidated Results discussion below provides a summary of our results and the trends affecting our business, and should be read in conjunction with the more detailed Segment Results discussion that follows.

NET SALES

First quarter net sales decreased$71 million compared to the same period in 2014. For the first quarter, the decrease in net sales was mainly due to lower sales volumes in our Roofing segment, partially offset by increased sales volumes in our Insulation segment.

GROSS MARGIN

In the first quarter of 2015, gross margin as a percentage of sales decreased one percentage point compared to the first quarter of 2014. The reduction was driven by lower sales volumes and lower selling prices in our Roofing business, partially offset by increased contribution margins in our Composites and Insulation businesses.

CHARGES RELATED TO COST REDUCTION ACTIONS

During 2014, the Company took actions to reduce costs throughout our global Composites network, mainly through the decision to close a facility in Japan and optimize a facility in Canada, in addition to other cost reduction actions. The Company also took actions in 2014 to streamline its management structure and reduce costs, resulting in the elimination of the Building Materials Group organizational structure.

During 2013, we entered into an agreement to sell our Composites glass reinforcements facility in Hangzhou, China to the Hangzhou Municipal Land Reservation Center and the Development and Construction Management Office of Taoyuan New Zone of Gongshu District in Hangzhou.

The following table presents the impact and respective location of charges related to cost reduction actions and related items on the Consolidated Statement of Earnings (in millions):

	Three Months Ended March 31,
Location	2015		2014
Cost of sales	$	2	$	—
Charges related to cost reduction actions	—		12
Total charges related to cost reduction actions and related items	$	2	$	12

- 38 -

ITEM 2.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

EARNINGS BEFORE INTEREST AND TAXES

EBIT decreased by $50 million for the first quarter of 2015 compared to the same period in 2014. First quarter EBIT in our Composites segment increased by $33 million. In our Insulation segment, first quarter EBIT increased by $6 million. In our Roofing segment, first quarter EBIT decreased by $60 million. Corporate EBIT losses for the first quarter increased by $29 million, due primarily to the gain on sale of our Hangzhou, China Composites glass reinforcements facility that was recognized in the first quarter of 2014.

INTEREST EXPENSE, NET

In the first quarter of 2015, interest expense was in line with the same period in 2014.

INCOME TAX EXPENSE

Income tax expense (benefit) for the three months ended March 31, 2015 was an expense of $13 million for an effective tax rate of 41%. The difference between the effective tax rate and the U.S. federal statutory tax rate of 35% is primarily attributable to the tax accounting treatment of various locations which are currently in a loss position and other discrete adjustments in the first quarter of 2015.

Realization of deferred tax assets depends on achieving a certain minimum level of future taxable income. Management currently believes that it is at least reasonably possible that the minimum level of taxable income will be met within the next 12 months to reduce the valuation allowance of certain foreign jurisdictions by a range of $2 million to $15 million.

Income tax expense (benefit) for the three months ended March 31, 2014, was a benefit of $39 million. The effective tax rate for the three months ended March 31, 2014 was (48) percent. The difference between the effective tax rate and the statutory rate of 35 percent is primarily attributable to the Company recording a tax benefit of $78 million relating to the resolution of an uncertain tax position and a valuation allowance recorded in prior years against certain European net deferred tax assets. The resolution of an uncertain tax position was the result of the Company receiving final notification from the IRS in the first quarter that it had completed its audit examination for the taxable years 2008 through 2010. The valuation allowance was reversed during the first quarter based on the weight of the first quarter earnings resulting in positive cumulative earnings in recent years and the Company’s forecast which indicates that the positive earnings trend will continue. The remaining differences relate to other discrete adjustments in the quarter and the accounting treatment of various locations which are currently in a loss position in the first quarter 2014.

- 39 -

ITEM 2.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

Adjusted Earnings Before Interest and Taxes (“Adjusted EBIT”)

Adjusted EBIT excludes certain items that management does not allocate to our segment results because it believes they are not a result of the Company’s current operations. Adjusted EBIT is used internally by the Company for various purposes, including reporting results of operations to the Board of Directors of the Company, analysis of performance and related employee compensation measures. Although management believes that these adjustments result in a measure that provides a useful representation of our operational performance, the adjusted measure should not be considered in isolation or as a substitute for net earnings attributable to Owens Corning as prepared in accordance with accounting principles generally accepted in the United States.

Adjusting items are shown in the table below (in millions):

	Three Months Ended   March 31,
	2015			2014
Charges related to cost reduction actions	$	—		$	(12	)
Other items related to cost reduction actions	(2		)	—
Gain on sale of Hangzhou, China facility	—			45
Net loss related to Hurricane Sandy	—			(2		)
Total adjusting items	$	(2	)	$	31

The reconciliation from net earnings attributable to Owens Corning to Adjusted EBIT is shown in the table below (in millions):

	Three Months Ended   March 31,
	2015			2014
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	$	18		$	120
Less: Net earnings attributable to noncontrolling interests	1			—
NET EARNINGS	19			120
Less: Income tax expense (benefit)	13			(39		)
EARNINGS BEFORE TAXES	32			81
Interest expense, net	26			27
EARNINGS BEFORE INTEREST AND TAXES	58			108
Less: adjusting items from above	(2		)	31
ADJUSTED EBIT	$	60		$	77

Segment Results

EBIT by segment consists 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, which is presented following the discussion of our reportable segments.

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ITEM 2.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

Composites

The table below provides a summary of net sales, EBIT and depreciation and amortization expense for the Composites segment (in  millions):

	Three Months Ended   March 31,
	2015			2014
Net sales	$	478		$	477
% change from prior year	—		%	4		%
EBIT	$	60		$	27
EBIT as a % of net sales	13		%	6		%
Depreciation and amortization expense	$	32		$	34

NET SALES

In our Composites business, net sales were flat in the first quarter of 2015 compared to the same period in 2014. The quarter-over-quarter impact of translating sales denominated in foreign currencies into United States dollars negatively impacted sales by $45 million. Increased sales volumes of 3% and higher selling prices of $8 million partially offset the currency impact. The remaining improvement in sales was driven by favorable product mix.

EBIT

In our Composites business, EBIT was $33 millionhigher in the first quarter of 2015 compared to the same period in 2014. The negative impact of translating sales denominated in foreign currencies into United States dollars was $6 million. The favorable impact of product mix contributed about $20 million of the remaining quarter over quarter improvement, with about 60% of that impact being driven by higher specialty glass sales. Higher selling prices delivered $8 million. The remaining improvement was driven about equally by higher sales volumes, improved manufacturing performance, the timing of furnace rebuild expenses and the timing of selling, general and administrative expenses within the year.

OUTLOOK

Global glass reinforcements market demand has historically grown on average with global industrial production and we believe this relationship will continue. In 2015, we expect moderate global industrial production growth.

Insulation

The table below provides a summary of net sales, EBIT and depreciation and amortization expense for the Insulation segment (in millions):

	Three Months Ended   March 31,
	2015			2014
Net sales	$	379		$	355
% change from prior year	7		%	8		%
EBIT	$	7		$	1
EBIT as a % of net sales	2		%	—		%
Depreciation and amortization expense	$	24		$	25

- 41 -

ITEM 2.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

NET SALES

In our Insulation business, net sales were $24 millionhigher in the first quarter of 2015 compared to the same period in 2014. The increase was driven primarily by 5% higher sales volumes. Higher selling prices drove the remainder of the increase. The impact of our third quarter 2014 acquisition of a building materials distribution company in Chile was offset by the impact of translating sales denominated in foreign currencies into United States dollars.

EBIT

In our Insulation business, EBIT increased by $6 million in the first quarter of 2015 compared to the same period in 2014. This increase was driven by higher selling prices.

OUTLOOK

During the first quarter of 2015, the average Seasonally Adjusted Annual Rate (“SAAR”) of United States housing starts was approximately 975 thousand, up from an annual average of approximately 925 thousand starts in the first quarter of 2014. While the information on United States housing starts has been positive over the past couple of years, the timing and pace of recovery of the United States housing market remains uncertain.

The Company expects its Insulation business to continue to benefit from an overall strengthening of the U.S. housing market, improved pricing, and higher capacity utilization. We believe the geographic, product and channel mix of our portfolio may continue to moderate the impact of any demand-driven variability associated with United States new construction.

Roofing:

The table below provides a summary of net sales, EBIT and depreciation and amortization expense for the Roofing segment (in millions):

	Three Months Ended   March 31,
	2015			2014
Net sales	$	393		$	497
% change from prior year	-21		%	-18		%
EBIT	$	20		$	80
EBIT as a % of net sales	5		%	16		%
Depreciation and amortization expense	$	9		$	9

NET SALES

In our Roofing business, net sales in the first quarter of 2015 were $104 millionlower compared to the same period in 2014. The decline in net sales was driven primarily by lower sales volumes of approximately 15% and lower selling prices of $26 million.

EBIT

In our Roofing business, EBIT decreased$60 million in the first quarter of 2015 compared to the same period in 2014. The decrease in EBIT was driven about equally by lower sales volumes and lower selling prices, with the remainder of the change due to lower production volumes.

OUTLOOK

In our roofing business, we expect the factors that have driven strong margins in recent years will continue to deliver profitability. The overall market size and distribution of shipments throughout the remainder of the year will impact our financial outlook for this year. Other uncertainties that may impact our Roofing margins include competitive pricing pressure and the cost and availability of raw materials, particularly asphalt.

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ITEM 2.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

Corporate, Other and Eliminations

The table below provides a summary of EBIT and depreciation and amortization expense for the Corporate, Other and Eliminations category (in millions):

	Three Months Ended   March 31,
	2015			2014
Charges related to cost reduction actions	$	—		$	(12	)
Other items related to cost reduction actions	(2		)	—
Gain on sale of Hangzhou, China facility	—			45
Net loss related to Hurricane Sandy	—			(2		)
General corporate expense and other	(27		)	(31		)
EBIT	$	(29	)	$	—
Depreciation and amortization	$	10		$	8

EBIT

In Corporate, Other and Eliminations, EBIT losses for the first quarter of 2015 were $29 millionhigher compared to the same period in 2014.

Excluding adjusting items, general corporate expense and other in the first quarter of 2015 was $4 millionlower compared to the same period in 2014, primarily due to decreased Corporate functions spending and overall lower general corporate expenses. Adjusting items for the first quarter of 2015 included a total of $2 million related to cost reduction actions and related items.

Depreciation and amortization in the first quarter of 2015 was $2 million higher compared to the same period in 2014, primarily due to including $2 million of accelerated depreciation related to our Japan and Canada restructuring plan in the 2015 results.

OUTLOOK

In 2015, we expect general corporate expenses to range between $120 million and $130 million.

LIQUIDITY, CAPITAL RESOURCES AND OTHER RELATED MATTERS

Liquidity

The Company's primary sources of liquidity are its senior revolving credit facility and its receivables securitization facility.

The Company has an $800 million senior revolving credit facility which matures in November 2018.

The Company has a $250 million receivables securitization facility which matures in January 2018. In July 2013, we amended the receivables securitization facility to extend its maturity to July 2016 and to reduce the size of the facility to $200 million during the months of November, December, and January. In January 2015, we amended the receivables securitization facility to extend its maturity to January 2018 and remove the seasonal reduction of the facility restoring the full $250 million of facility capacity during the months of November, December, and January.

As of March 31, 2015, the Company fully utilized its receivables securitization facility for $237 million of borrowings and $13 million of outstanding letters of credit. As of March 31, 2015, the Company utilized its senior revolving credit facility for $151 million of borrowings and $9 million of outstanding letters of credit, and has $640 million available on this facility.

The Company has no significant debt maturities before the fourth quarter of 2016. As of March 31, 2015, we had $2.3 billion of total debt and cash-on-hand of $77 million.

Cash and cash equivalents held by foreign subsidiaries may be subject to U.S. income tax and foreign withholding taxes upon repatriation to the U.S. The Company does not provide for U.S. income taxes on the undistributed earnings of these subsidiaries as earnings are reinvested and, in the opinion of management, will continue to be reinvested indefinitely outside of the U.S. As of March 31, 2015, and December 31, 2014, the Company had approximately $55 million and $46 million, respectively, in cash and

- 43 -

ITEM 2.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

cash equivalents in certain of our foreign subsidiaries where we consider undistributed earnings for these foreign subsidiaries to be permanently reinvested.

We expect that our cash on hand, coupled with future cash flows from operations and other available sources of liquidity, including our senior revolving credit facility, will provide ample liquidity to enable us to meet our cash requirements. Our anticipated uses of cash include capital expenditures, working capital needs, pension contributions, meeting financial obligations, payments of quarterly dividends as authorized by our Board of Directors, and reducing outstanding amounts under the senior revolving credit facility and receivables securitization facility.

We have outstanding share repurchase authorizations and will evaluate and consider repurchasing shares of our common stock, as well as strategic acquisitions, divestitures, joint ventures and other transactions to create stockholder value and enhance financial performance. Such transactions may require cash expenditures beyond current sources of liquidity or generate proceeds.

The credit agreements applicable to our senior revolving credit facility and the receivables securitization facility contain various covenants that we believe are usual and customary for agreements of these types. The senior revolving credit facility and the securitization facility each include a maximum allowed leverage ratio and a minimum required interest expense coverage ratio. We were in compliance with these covenants as of March 31, 2015.

Cash Flows

The following table presents a summary of our cash balance and cash flows (in millions):

	Three Months Ended   March 31,
	2015			2014
Cash balance	$	77		$	65
Net cash flow used for operating activities	$	(149	)	$	(272	)
Net cash flow used for investing activities	$	(56	)	$	(54	)
Net cash flow provided by financing activities	$	214		$	335
Availability on the senior revolving credit facility	$	640		$	500
Availability on the receivables securitization facility	$	—		$	—

Operating activities: For the three months endedMarch 31, 2015, the Company used $149 million of cash for operating activities compared to $272 million used in the same period in 2014. This decrease in cash used for operating activities was primarily due to changes in working capital.

Investing activities: Net cash flow used for investing activities increased$2 million for the three months ended March 31, 2015 compared to the same period of 2014.

Financing activities: Net cash provided by financing activities was $121 millionlower for the three months ended March 31, 2015 compared to the same period in 2014. The decrease in cash provided by financing activities was due primarily to lower net borrowings on our senior revolving credit facility and the payment of cash dividends.

2015 Investments

Capital Expenditures: The Company will continue a balanced approach to the use of its cash flow. Operational cash flow will be used to fund the Company’s growth and innovation. Capital expenditures in 2015 are expected to be approximately $380 million, which is roughly $70 million greater than expected depreciation and amortization. Capital spending in excess of depreciation and amortization is primarily due to the construction of our non-woven composites plant in Gastonia, North Carolina and construction of a new mineral wool insulation plant. The Company will also continue to evaluate projects and acquisitions that provide opportunities for growth in our businesses, and invest in them when they meet our strategic and financial criteria.

Tax Net Operating Losses

There have been no material changes to the disclosure in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.

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ITEM 2.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

Pension Contributions

Please refer to Note 12 of the Consolidated Financial Statements. The Company expects to contribute $62 million in cash to its global pension plans during 2015. Actual contributions to the plans may change as a result of several factors, including changes in laws that impact funding requirements. The ultimate cash flow impact to the Company, if any, of the pension plan liability and the timing of any such impact will depend on numerous variables, including future changes in actuarial assumptions, legislative changes to pension funding laws, and market conditions.

Derivatives

Please refer to Note 4 of the Consolidated Financial Statements.

Fair Value Measurement

Please refer to Note 16of the Consolidated Financial Statements.

Contractual Obligations

In the normal course of business, we enter into contractual obligations to make payments to third parties. During the three months ended March 31, 2015, there were no material changes to such contractual obligations outside the ordinary course of our business.

SAFETY

Working safely is a condition of employment at Owens Corning. We believe this organization-wide expectation provides for a safer work environment for employees, improves our manufacturing processes, reduces our costs and enhances our reputation. Furthermore, striving to be a world-class leader in safety provides a platform for all employees to understand and apply the resolve necessary to be a high-performing global organization. We measure our progress on safety based on Recordable Incidence Rate (“RIR”) as defined by the United States Department of Labor, Bureau of Labor Statistics. For the three months ended March 31, 2015, our RIR was 0.64 as compared to 0.49 in the same period a year ago.

ACCOUNTING PRONOUNCEMENTS

Please refer to Note 19 of the Consolidated Financial Statements.

ENVIRONMENTAL MATTERS

Please refer to Note 13 of the Consolidated Financial Statements.

CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS

Our disclosures and analysis in this report, including Management’s Discussion and Analysis of Financial Condition and Results of Operations, contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements present our current forecasts and estimates of future events. These statements do not strictly relate to historical or current results and can be identified by words such as “anticipate,” “believe,” “estimate,” “expect,” “intend,” “likely,” “may,” “plan,” “project,” “strategy,” "will" and other terms of similar meaning or import in connection with any discussion of future operating, financial or other performance. These forward-looking statements are subject to risks, uncertainties and other factors that could cause actual results to differ materially from those projected in the statements. These risks, uncertainties and other factors include, without limitation:

• levels of residential and commercial construction activity;

• competitive and pricing factors;

• levels of global industrial production;

• demand for our products;

• relationships with key customers;

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ITEM 2.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

• industry and economic conditions that affect the market and operating conditions of our customers, suppliers or lenders;

• foreign exchange and commodity price fluctuations;

• our level of indebtedness;

• weather conditions;

• availability and cost of credit;

• availability and cost of energy and raw materials;

• issues involving implementation and protection of information technology systems;

• international economic and political conditions, including new legislation or other governmental actions;

• our ability to utilize our net operating loss carryforwards;

• research and development activities and intellectual property protection;

• interest rate movements;

• labor disputes and litigation;

• uninsured losses;

• issues related to acquisitions, divestitures and joint ventures;

• achievement of expected synergies, cost reductions and/or productivity improvements; and

• defined benefit plan funding obligations.

All forward-looking statements in this report should be considered in the context of the risks and other factors described above and in Item 1A - Risk factors in Part I of our Annual Report on Form 10-K for the year ended December 31, 2014. Any forward-looking statements speak only as of the date the statement is made and we undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by federal securities laws. It is not possible to identify all of the risks, uncertainties and other factors that may affect future results. In light of these risks and uncertainties, the forward-looking events and circumstances discussed in this report may not occur and actual results could differ materially from those anticipated or implied in the forward-looking statements. Accordingly, users of this report are cautioned not to place undue reliance on the forward-looking statements.

- 46 -

ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

There has been no material change in our exposure to market risk during the three months ended March 31, 2015. Please refer to "Quantitative and Qualitative Disclosures about Market Risk" contained in Part II, Item 7A of our Annual Report on Form 10-K for the year ended December 31, 2014 for a discussion of our exposure to market risk.

ITEM 4.    CONTROLS AND PROCEDURES

The Company maintains (a) disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, (the “Exchange Act”)), and (b) internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act).

The Company’s management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the Company’s disclosure controls and procedures as of the end of the period covered by this report. Based on such evaluation, the Company’s Chief Executive Officer and Chief Financial Officer have concluded that, as of the end of such period, the Company’s disclosure controls and procedures are effective.

- 47 -

PART II

ITEM 1.    LEGAL PROCEEDINGS

The information required by this item is incorporated by reference to Note 13, "Contingent Liabilities and Other Matters".

ITEM 1A.    RISK FACTORS

There have been no material changes to the risk factors disclosed in Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.

ITEM 2.    UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Recent Sales of Unregistered Securities; Use of Proceeds from Registered Securities

None.

Issuer Purchases of Equity Securities

The following table provides information about Owens Corning’s purchases of its common stock during each month during the quarterly period covered by this report:

Period	Total Number of Shares (or Units) Purchased		Average Price Paid per Share (or Unit)		Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs**	Maximum Number (or Approximate Dollar Value) of Shares (or Units) that May Yet Be Purchased Under the Plans or Programs**
January 1-31, 2015	7,307		$	37.13	—	7,700,000
February 1-28, 2015	137,133		39.52		—	7,700,000
March 1-31, 2015	345,307		39.22		342,734	7,357,266
Total	489,747	*	$	39.27	342,734	7,357,266

* The Company retained 147,013 shares surrendered to satisfy tax withholding obligations in connection with the vesting of restricted shares granted to our employees.

** On April 25, 2012, the Company announced a share buy-back program under which the Company is authorized to repurchase up to 10 million shares of Owens Corning’s outstanding common stock. Under the buy-back program, shares may be repurchased through open market, privately negotiated, or other transactions. The timing and actual number of shares repurchased will depend on market conditions and other factors and will be at the Company’s discretion.

ITEM 3.    DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4.    MINE SAFETY DISCLOSURES

Not applicable.

- 48 -

ITEM 5.    OTHER INFORMATION

Submission of Matters to a Vote of Security Holders.

At the 2015 Annual Meeting of Stockholders of the Company held on April 16, 2015, Company stockholders cast their votes as described below on three proposals described in the Company’s definitive proxy statement filed with the U.S. Securities and Exchange Commission on March 12, 2015.

Proposal 1

The following directors were elected to serve until the 2016 Annual Meeting of Stockholders and until their successors are elected and qualified pursuant to the following vote:

Name	For	Withheld	Broker Non-Votes
James J. McMonagle	96,700,056	4,242,308	5,429,888
W. Howard Morris	94,989,444	5,952,920	5,429,888
Suzanne P. Nimocks	96,672,571	4,269,793	5,429,888

Proposal 2

Company stockholders ratified the selection of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for 2015 pursuant to the following vote:

Votes For	Votes Against	Abstentions	Broker Non-Votes
102,998,036	1,915,539	1,458,677	—

Proposal 3

Company stockholders approved, on an advisory basis, the 2014 compensation paid to the Company’s named executive officers pursuant to the following vote:

Votes For	Votes Against	Abstentions	Broker Non-Votes
88,556,599	4,510,439	7,875,326	5,429,888

ITEM 6.    EXHIBITS

See Exhibit Index below, which is incorporated herein by reference.

- 49 -

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, Owens Corning has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

			OWENS CORNING
			Registrant
Date:	April 22, 2015	By:	/s/ Michael C. McMurray
			Michael C. McMurray
			Senior Vice President and
			Chief Financial Officer
Date:	April 22, 2015	By:	/s/ Kelly J. Schmidt
			Kelly J. Schmidt
			Vice President and
			Controller

- 50 -

EXHIBIT INDEX

Exhibit Number	Description
10.31	Amendment, dated April 16, 2015, to Key Management Severance Agreement with Michael H. Thaman (filed herewith)*.
31.1	Certification of Chief Executive Officer pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a) (filed herewith).
31.2	Certification of Chief Financial Officer pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a) (filed herewith).
32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350 (filed herewith).
32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350 (filed herewith).
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema
101.CAL	XBRL Taxonomy Extension Calculation Linkbase
101.DEF	XBRL Taxonomy Extension Definition Linkbase
101.LAB	XBRL Taxonomy Extension Label Linkbase
101.PRE	XBRL Taxonomy Extension Presentation Linkbase

*Denotes management contract or compensatory plan or arrangement

EX-10.31

EXHIBIT 10.31

AMENDMENT TO

KEY MANAGEMENT SEVERANCE AGREEMENT

This Amendment (the “Amendment”) is made and entered into as of this 16^th day of April, 2015 by and between Owens Corning, a Delaware corporation and its subsidiaries, (the “Company”), and Michael H. Thaman (the “Executive”), as an amendment to the Key Management Severance Agreement between the Company and the Executive (the “Agreement”) dated February 20, 2006 and subsequently amended as of December 31, 2010.

WHEREAS, the Company and Executive have entered into the Agreement to establish the compensation payable to Executive upon Executive’s separation from service; and

WHEREAS, the Company and Executive desire to amend the Agreement to ensure it remains consistent with evolving market practices;

NOW, THEREFORE, BE IT RESOLVED, that the Agreement is hereby amended, as follows:    

Paragraph 9 of the Agreement is hereby amended to read as follows:

“Notwithstanding the foregoing, if the payments provided under or pursuant to this Agreement, together with all payments provided under or pursuant to any other plan, agreement or arrangement (the “Total Payments”), are determined by the Company, with the assistance of a nationally recognized accounting firm acceptable to Executive, to be “parachute payments” under Section 280G(b)(2) of the Code, then the Total Payments shall be automatically reduced to an amount equal to $1.00 less than three times (3x) Executive’s “base amount” (as defined in Section 280G(3) of the Code) (the “Reduced Amount”); provided, however, that such reduction shall not apply if the sum of (A) the Total Payments less (B) the amount of excise tax payable by Executive under Section 4999 of the Code with respect to the Total Payments, is greater than the Reduced Amount. Any such reduction shall occur in the following order: (i) by eliminating the acceleration of vesting of any stock options for which the exercise price exceeds the fair market value (and if there is more than one option award so outstanding, then the acceleration of the vesting of the most “under water” option shall be reduced first, and so-on); (ii) by reducing any cash payments that are not subject to Section 409A of the Code (and if there be more than one such payment, by reducing the payments in reverse order, with the payments made the earliest being reduced first); (iii) by reducing any benefit continuation payments (and if there be more than one such payment, by reducing the payments in reverse order, with the payments made the earliest being reduced first); (iv) by reducing any cash payments that are subject to Section 409A of the Code (and if there be more than one such payment, by reducing the payments in reverse order, with the payments made the earliest being reduced first); (v) by reducing the payments of any restricted stock, restricted stock units, performance awards or similar equity-based awards that have been awarded to Executive by the Company that are subject to performance-based vesting (and if there be more than one such award held by Executive, by reducing the awards in the reverse order of the date of their award, with the most-recently awarded reduced first and the oldest award reduced last); (vi) by reducing the payments of any restricted stock, restricted stock units or similar equity-based awards that have been awarded to Executive by the Company that are subject to time-based vesting (and if there be more than one such award held by Executive, by reducing the awards in the reverse order of the date of their award, with the most-recently awarded reduced first and the oldest award reduced last); and (vii) by reducing the acceleration of vesting of any stock options that are not described in clause (i), above.

IN WITNESS WHEREOF, the Company and Executive execute this Amendment as their free act and deed.

OWENS CORNINGEXECUTIVE

By:         /s/ Daniel P. Lynch            By:         /s/ Michael H. Thaman

    Daniel P. Lynch                     Michael H. Thaman

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Michael H. Thaman, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Owens Corning;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 22, 2015

/s/  Michael H. Thaman  

Michael H. Thaman

Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Michael C. McMurray, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Owens Corning;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 22, 2015

/s/  Michael C. McMurray  

Michael C. McMurray

Chief Financial Officer

EX-32.1

Exhibit 32.1

SECTION 1350 CERTIFICATION

In connection with the Quarterly Report on Form 10-Q of Owens Corning (the “Company”) for the quarterly period ended March 31, 2015 (the “Report”), I, Michael H. Thaman, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) Information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/  Michael H. Thaman  

Michael H. Thaman

Chief Executive Officer

April 22, 2015

EX-32.2

Exhibit 32.2

SECTION 1350 CERTIFICATION

In connection with the Quarterly Report on Form 10-Q of Owens Corning (the “Company”) for the quarterly period ended March 31, 2015 (the “Report”), I, Michael C. McMurray, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) Information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/  Michael C. McMurray  

Michael C. McMurray

Chief Financial Officer

April 22, 2015

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COST REDUCTION ACTIONS

3 Months Ended

Mar. 31, 2015

Restructuring and Related Activities [Abstract]

COST REDUCTION ACTIONS

COST REDUCTION ACTIONS

2014 Cost Reduction Actions

In the fourth quarter of 2014, the Company announced organizational changes to streamline its management structure and reduce costs. As part of this action, the Building Materials Group organizational structure was eliminated. In conjunction with this action, the Company recognized $9 million in severance charges for the year ended December 31, 2014. There were no additional costs incurred in the first quarter of 2015.

The Company took actions in the third quarter of 2014 to reduce costs in its Composites segment. These actions related to our decision to not rebuild two sub-scale high cost furnaces that will result in closing a facility in Japan and optimizing a facility in Canada. As a result of these actions, the Company recognized $16 million in severance charges, $3 million in contract termination charges, and $1 million net gain in other related charges for the year ended December 31, 2014. During the first quarter of 2015, the Company recognized $2 million in charges for items related to cost reduction actions.

In addition, in the first quarter of 2014, the Company took actions in our Composites segment related to global workforce reductions and the termination of a contract with a utility services provider. In conjunction with these actions, the Company recorded in the first quarter of 2014 $14 million in charges related to cost reduction actions, of which $11 million is related to severance and $3 million is related to contract termination charges. During the fourth quarter of 2014, the charges related to contract termination were recovered through a settlement. There were no additional costs incurred in the first quarter of 2015.

The following table summarizes the status of the unpaid liabilities from the Company’s 2014 cost reduction actions (in millions):

	Balance at December 31, 2014		Costs Incurred		Payments		Foreign Currency Translation			Balance at March 31, 2015		Cumulative Charges Incurred
Severance	$	31	$	—	$	3	$	(1	)	$	27	$	36
Contract Termination	3		—		—		—			3		3
Total	$	34	$	—	$	3	$	(1	)	$	30	$	39

The Company expects the unpaid balance of these severance and contract termination charges to be paid over the next year.

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CONTINGENT LIABILITIES AND OTHER MATTERS (DETAIL) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 Number
Unusual or Infrequent Item [Line Items]
Environmental Liability Sites	21
Environmental Exit Costs, Reasonably Possible Additional Losses, Best Estimate	$ 3

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Pension and other postretirement tax	$ (2)	$ (1)
Deferred loss on hedging tax	(1)	0
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	$ (5)	$ 0

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INVENTORIES

3 Months Ended

Mar. 31, 2015

Inventory, Net [Abstract]

INVENTORIES

INVENTORIES

Inventories consist of the following (in millions):

	March 31, 2015		December 31, 2014
Finished goods	$	580	$	568
Materials and supplies	245		249
Total inventories	$	825	$	817

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INCOME TAXES

3 Months Ended

Mar. 31, 2015

Income Tax Disclosure [Abstract]

INCOME TAXES

INCOME TAXES

Income tax expense (benefit) for the three months ended March 31, 2015 was $13 million, for an effective tax rate of 41%. The difference between the effective tax rate and the U.S. federal statutory rate tax of 35% is primarily attributable to the tax accounting treatment of various locations which are currently in a loss position and other discrete adjustments in the first quarter 2015.

Income tax expense (benefit) for the three months ended March 31, 2014, was ($39) million for an effective tax rate benefit of (48)%. The difference between the effective tax rate benefit and the U.S. federal statutory tax rate of 35% is primarily attributable to the resolution of an uncertain tax position upon receiving final notification from the IRS that it had completed its audit examination for the taxable years 2008 through 2010 and the reversal of a valuation allowance recorded in prior years against certain European net deferred tax assets which cumulatively totaled $78 million. The remaining differences relate to other discrete adjustments in the quarter and the accounting treatment of various locations which were in a loss position in the first quarter 2014.

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FAIR VALUE MEASUREMENT (DETAIL) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Assets:
Derivative assets	$ 18,000,000	$ 1,000,000
Liabilities:
Derivative liabilities	7,000,000	8,000,000
Total liabilities	13,000,000	13,000,000
Contingent consideration change in fair value	1,000,000
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Notes Payable, Fair Value Disclosure, Par Value	100.00%	100.00%
Senior Notes Due 2036
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	7.00%	7.00%
Senior Notes Due 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	9.00%	9.00%
Fair Value Inputs Level 1
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Total liabilities	0	0
Fair Value Inputs Level 2
Assets:
Derivative assets	18,000,000	1,000,000
Liabilities:
Derivative liabilities	7,000,000	8,000,000
Total liabilities	7,000,000	8,000,000
Fair Value Inputs Level 3
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Contingent consideration	6,000,000	5,000,000
Total liabilities	6,000,000	5,000,000
Maximum Payout
Liabilities:
Contingent consideration	7,000,000
Minimum Payout
Liabilities:
Contingent consideration	$ 4,000,000

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DEBT

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

DEBT

DEBT

Details of the Company’s outstanding long-term debt are as follows (in millions):

	March 31, 2015		December 31, 2014
6.50% senior notes, net of discount, due 2016	$	158	$	158
9.00% senior notes, net of discount, due 2019	143		143
4.20% senior notes, net of discount, due 2022	600		600
4.20% senior notes, net of discount, due 2024	393		392
7.00% senior notes, net of discount, due 2036	540		540
Accounts receivable securitization facility, maturing in 2018	237		106
Senior revolving credit facility, maturing in 2018	151		—
Various capital leases, due through and beyond 2050	46		47
Fair value adjustment to debt	9		8
Total long-term debt	2,277		1,994
Less – current portion	3		3
Long-term debt, net of current portion	$	2,274	$	1,991

Senior Notes

The Company issued $400 million of 2024 senior notes on November 12, 2014 at 4.20%. The Company paid $4 million in loan costs in connection with the 2024 notes. These costs were deferred and are being amortized over the term of the 2024 notes. Interest on the notes is payable semiannually in arrears on June 1 and December 1 each year, beginning on June 1, 2015. The proceeds from these notes were used to repay $242 million of our 2016 senior notes, $105 million of our 2019 senior notes and to pay down our Senior Revolving Credit Facility.

The Company issued $600 million of 2022 senior notes on October 17, 2012. The proceeds of these notes were used to refinance $250 million of our 2016 senior notes, $100 million of our 2019 senior notes and pay down our Senior Revolving Credit Facility. Interest on the notes is payable semiannually in arrears on June 15 and December 15 each year, beginning on June 15, 2013.

The Company issued $350 million of 2019 senior notes on June 3, 2009. On October 31, 2006, the Company issued $650 million of 2016 senior notes and $540 million of 2036 senior notes. The proceeds of these notes were used to pay certain unsecured and administrative claims, finance general working capital needs and for general corporate purposes.

Collectively, the notes above are referred to as the “Senior Notes.” The Senior Notes are general unsecured obligations of the Company and rank pari passu with all existing and future senior unsecured indebtedness of the Company.

The Senior Notes are fully and unconditionally guaranteed by each of the Company’s current and future domestic subsidiaries that are a borrower or guarantor under the Company’s Credit Agreement (as defined below). The guarantees are unsecured and rank equally in right of payment with all other existing and future senior unsecured indebtedness of the guarantors. The guarantees are effectively subordinated to existing and future secured debt of the guarantors to the extent of the assets securing that indebtedness.

The Company has the option to redeem all or part of the Senior Notes at any time at a “make whole” redemption price. The Company is subject to certain covenants in connection with the issuance of the Senior Notes that it believes are usual and customary. The Company was in compliance with these covenants as of March 31, 2015.

In the fourth quarter of 2011, the Company terminated the interest rate swaps designated to hedge a portion of the 6.5% senior notes due 2016. The swaps were carried at fair value and recorded as other assets or liabilities, with a fair value adjustment to long-term debt on the Consolidated Balance Sheets. The fair value adjustment to debt will be amortized through 2016 as a reduction to interest expense in conjunction with the maturity date of the notes.

On June 28, 2013, the Company entered into interest rate swap agreements effective July 1, 2013 to manage its interest rate exposure by swapping $100 million of fixed rate to variable rate exposure designated against our 4.2% senior notes due 2022. The swaps are carried at fair value and recorded as other assets or liabilities, with a fair value adjustment to long-term debt on the Consolidated Balance Sheets.

Senior Credit Facility

In November 2013, the Company amended the credit agreement (the “Credit Agreement”) for the $800 million multi-currency senior revolving credit facility (the “Senior Revolving Credit Facility”) to extend the maturity to November 2018 and reduce the letters of credit sublimit to $100 million. The Senior Revolving Credit Facility includes both borrowings and letters of credit. Borrowings under the Senior Revolving Credit Facility may be used for general corporate purposes and working capital. The Company has the discretion to borrow under multiple options, which provide for varying terms and interest rates including the United States prime rate or LIBOR plus a spread.

The Senior Revolving Credit Facility contains various covenants, including a maximum allowed leverage ratio and a minimum required interest expense coverage ratio that the Company believes are usual and customary for a senior unsecured credit agreement. The Company was in compliance with these covenants as of March 31, 2015.

As of March 31, 2015, the Company utilized its senior revolving credit facility for $151 million of borrowings and $9 million of outstanding letters of credit, and has $640 million available on this facility.

Receivables Securitization Facility

Included in long-term debt on the Consolidated Balance Sheets are amounts outstanding under a Receivables Purchase Agreement (the “RPA”) that are accounted for as secured borrowings in accordance with ASC 860, Accounting for Transfers and Servicing. Owens Corning Sales, LLC and Owens Corning Receivables LLC, each a subsidiary of the Company, have a $250 million RPA with certain financial institutions. The securitization facility was amended in November of 2013 to extend its maturity to July 2016 and to reduce the size of the facility to $200 million during the months of November, December, and January. The securitization facility was amended in January of 2015 to extend its maturity to January 2018 and remove the seasonal reduction of the facility restoring the full $250 million of facility capacity during the months of November, December, and January. As of March 31, 2015, the Company fully utilized its receivables securitization facility for $237 million in borrowings and $13 million of outstanding letters of credit.

The RPA contains various covenants, including a maximum allowed leverage ratio and a minimum required interest expense coverage ratio that the Company believes are usual and customary for a securitization facility. The Company was in compliance with these covenants as of March 31, 2015.

Owens Corning Receivables LLC’s sole business consists of the purchase or acceptance through capital contributions of trade receivables and related rights from Owens Corning Sales, LLC and the subsequent retransfer of or granting of a security interest in such trade receivables and related rights to certain purchasers party to the RPA. Owens Corning Receivables LLC is a separate legal entity with its own separate creditors who will be entitled, upon its liquidation, to be satisfied out of Owens Corning Receivables LLC’s assets prior to any assets or value in Owens Corning Receivables LLC becoming available to Owens Corning Receivables LLC’s equity holders. The assets of Owens Corning Receivables LLC are not available to pay creditors of the Company or any other affiliates of the Company or Owens Corning Sales, LLC.

Short-Term Debt

At March 31, 2015 and December 31, 2014, short-term borrowings were $14 million and $31 million, respectively. The short-term borrowings for both periods consisted of various operating lines of credit and working capital facilities. Certain of these borrowings are collateralized by receivables, inventories or property. The borrowing facilities are typically for one-year renewable terms. The weighted average interest rate on all short-term borrowings was approximately 4.3% for March 31, 2015 and 7.2% for December 31, 2014.

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DIVESTITURES DIVESTITURES (Details) (Sale of Hangzhou Facility [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Sep. 13, 2013
Sale of Hangzhou Facility [Member]
Business Divestitures [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	$ 45
Divestiture, Amount of Future Consideration Receivable	$ 14	$ 70

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INCOME TAXES (DETAIL) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Current Income Tax Expense (Benefit)	$ 13
Effective Income Tax Rate Continuing Operations	0.00%	0.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	0.00%	0.00%
Valuation Allowance, Amount		78
Current Federal Tax Expense		$ (39)

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EARNINGS PER SHARE (TABLE)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table summarizes the number of shares outstanding as well as our basic and diluted earnings per-share (in millions, except per share amounts):

	Three Months Ended   March 31,
	2015		2014
Net earnings attributable to Owens Corning	$	18	$	120
Weighted-average number of shares outstanding used for basic earnings per share	117.8		117.8
Non-vested restricted and performance shares	0.3		0.4
Options to purchase common stock	0.4		0.5
Weighted-average number of shares outstanding and common equivalent shares used for diluted earnings per share	118.5		118.7
Earnings per common share attributable to Owens Corning common stockholders:
Basic	$	0.15	$	1.02
Diluted	$	0.15	$	1.01

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CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

3 Months Ended

Mar. 31, 2015

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS

The following Condensed Consolidating Financial Statements present the financial information required with respect to those entities which guarantee certain of the Company’s debt. The Condensed Consolidating Financial Statements are presented on the equity method. Under this method, the investments in subsidiaries are recorded at cost and adjusted for the Company’s share of the subsidiaries’ cumulative results of operations, capital contributions, distributions and other equity changes. The principal elimination entries eliminate investment in subsidiaries and intercompany balances and transactions.

Guarantor and Nonguarantor Financial Statements

The Senior Notes and the Senior Revolving Credit Facility are guaranteed, fully, unconditionally and jointly and severally, by each of Owens Corning’s current and future 100% owned material domestic subsidiaries that is a borrower or a guarantor under Owens Corning’s Credit Agreement, which permits changes to the named guarantors in certain situations (collectively, the “Guarantor Subsidiaries”). The remaining subsidiaries have not guaranteed the Senior Notes and the Senior Revolving Credit Facility (collectively, the “Nonguarantor Subsidiaries”).

OWENS CORNING AND SUBSIDIARIES

CONSOLIDATING STATEMENT OF EARNINGS

FOR THE THREE MONTHS ENDEDMARCH 31, 2015

(in millions)

	Parent			Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Consolidated
NET SALES	$	—		$	841	$	461	$	(95	)	$	1,207
COST OF SALES	—			721		372		(95		)	998
Gross margin	—			120		89		—			209
OPERATING EXPENSES
Marketing and administrative expenses	32			68		29		—			129
Science and technology expenses	—			14		3		—			17
Charges related to cost reduction actions	—			—		—		—			—
Other expenses (income), net	(8		)	6		7		—			5
Total operating expenses	24			88		39		—			151
EARNINGS BEFORE INTEREST AND TAXES	(24		)	32		50		—			58
Interest expense, net	24			1		1		—			26
EARNINGS BEFORE TAXES	(48		)	31		49		—			32
Less: Income tax expense (benefit)	(15		)	9		19		—			13
Equity in net earnings of subsidiaries	51			29		—		(80		)	—
NET EARNINGS	18			51		30		(80		)	19
Less: Net earnings attributable to noncontrolling interests	—			—		1		—			1
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	$	18		$	51	$	29	$	(80	)	$	18

OWENS CORNING AND SUBSIDIARIES

CONSOLIDATING STATEMENT OF EARNINGS

FOR THE THREE MONTHS ENDEDMARCH 31, 2014

(in millions)

	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
NET SALES	$	—		$	911		$	456		$	(89	)	$	1,278
COST OF SALES	—			751			382			(89		)	1,044
Gross margin	—			160			74			—			234
OPERATING EXPENSES
Marketing and administrative expenses	32			66			34			—			132
Science and technology expenses	—			15			4			—			19
Charges related to cost reduction actions	—			1			11			—			12
Other expenses (income), net	(10		)	2			(29		)	—			(37		)
Total operating expenses	22			84			20			—			126
EARNINGS BEFORE INTEREST AND TAXES	(22		)	76			54			—			108
Interest expense, net	26			1			—			—			27
EARNINGS BEFORE TAXES	(48		)	75			54			—			81
Less: Income tax expense (benefit)	(18		)	(13		)	(8		)	—			(39		)
Equity in net earnings of subsidiaries	150			62			—			(212		)	—
NET EARNINGS	120			150			62			(212		)	120
Less: Net earnings attributable to noncontrolling interests	—			—			—			—			—
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	$	120		$	150		$	62		$	(212	)	$	120

OWENS CORNING AND SUBSIDIARIES

CONSOLIDATING STATEMENT OF COMPREHENSIVE EARNINGS (LOSS)

FOR THE THREE MONTHS ENDEDMARCH 31, 2015

(in millions)

	Parent			Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Consolidated
NET EARNINGS	$	18		$	51	$	30	$	(80	)	$	19
Currency translation adjustment (net of tax)	(50		)	—		—		—			(50		)
Pension and other postretirement adjustment (net of tax)	8			—		—		—			8
Deferred gain on hedging (net of tax)	1			—		—		—			1
COMPREHENSIVE EARNINGS (LOSS)	(23		)	51		30		(80		)	(22		)
Less: Comprehensive earnings attributable to noncontrolling interests	—			—		1		—			1
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	$	(23	)	$	51	$	29	$	(80	)	$	(23	)

OWENS CORNING AND SUBSIDIARIES

CONSOLIDATING STATEMENT OF COMPREHENSIVE EARNINGS (LOSS)

FOR THE THREE MONTHS ENDEDMARCH 31, 2014

(in millions)

	Parent			Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Consolidated
NET EARNINGS	$	120		$	150	$	62	$	(212	)	$	120
Currency translation adjustment (net of tax)	(16		)	—		—		—			(16		)
Pension and other postretirement adjustment (net of tax)	3			—		—		—			3
Deferred gain on hedging (net of tax)	—			—		—		—			—
COMPREHENSIVE EARNINGS (LOSS)	107			150		62		(212		)	107
Less: Comprehensive earnings attributable to noncontrolling interests	—			—		—		—			—
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	$	107		$	150	$	62	$	(212	)	$	107

OWENS CORNING AND SUBSIDIARIES

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF MARCH 31, 2015

(in millions)

ASSETS	Parent			Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
CURRENT ASSETS
Cash and cash equivalents	$	—		$	4	$	73	$	—		$	77
Receivables, less allowances	—			—		844		—			844
Due from affiliates	—			2,666		76		(2,742		)	—
Inventories	—			540		285		—			825
Assets held for sale	—			—		14		—			14
Other current assets	8			138		89		—			235
Total current assets	8			3,348		1,381		(2,742		)	1,995
Investment in subsidiaries	7,502			2,457		559		(10,518		)	—
Due from affiliates	—			—		826		(826		)	—
Property, plant and equipment, net	359			1,404		1,088		—			2,851
Goodwill	—			1,127		41		—			1,168
Intangible assets	—			985		231		(203		)	1,013
Deferred income taxes	31			380		23		—			434
Other non-current assets	42			66		127		—			235
TOTAL ASSETS	$	7,942		$	9,767	$	4,276	$	(14,289	)	$	7,696
LIABILITIES AND EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	57		$	454	$	384	$	—		$	895
Due to affiliates	1,816			—		926		(2,742		)	—
Short-term debt	—			—		14		—			14
Long-term debt – current portion	—			1		2		—			3
Total current liabilities	1,873			455		1,326		(2,742		)	912
Long-term debt, net of current	2,004			15		255		—			2,274
Due to affiliates	—			826		—		(826		)	—
Pension plan liability	302			—		122		—			424
Other employee benefits liability	—			235		14		—			249
Deferred income taxes	—			—		22		—			22
Other liabilities	119			175		41		(203		)	132
OWENS CORNING STOCKHOLDERS’ EQUITY
Preferred stock	—			—		—		—			—
Common stock	1			—		—		—			1
Additional paid in capital	3,946			6,433		1,763		(8,196		)	3,946
Accumulated earnings	803			1,628		694		(2,322		)	803
Accumulated other comprehensive deficit	(591		)	—		—		—			(591		)
Cost of common stock in treasury	(515		)	—		—		—			(515		)
Total Owens Corning stockholders’ equity	3,644			8,061		2,457		(10,518		)	3,644
Noncontrolling interests	—			—		39		—			39
Total equity	3,644			8,061		2,496		(10,518		)	3,683
TOTAL LIABILITIES AND EQUITY	$	7,942		$	9,767	$	4,276	$	(14,289	)	$	7,696

OWENS CORNING AND SUBSIDIARIES

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF DECEMBER 31, 2014

(in millions)

ASSETS	Parent			Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
CURRENT ASSETS
Cash and cash equivalents	$	—		$	1	$	66	$	—		$	67
Receivables, less allowances	—			—		674		—			674
Due from affiliates	—			2,858		—		(2,858		)	—
Inventories	—			527		290		—			817
Assets held for sale	—			—		16		—			16
Other current assets	7			132		94		—			233
Total current assets	7			3,518		1,140		(2,858		)	1,807
Investment in subsidiaries	7,504			2,590		558		(10,652		)	—
Due from affiliates	—			—		881		(881		)	—
Property, plant and equipment, net	359			1,397		1,143		—			2,899
Goodwill	—			1,127		41		—			1,168
Intangible assets	—			989		238		(210		)	1,017
Deferred income taxes	35			380		29		—			444
Other non-current assets	30			62		128		—			220
TOTAL ASSETS	$	7,935		$	10,063	$	4,158	$	(14,601	)	$	7,555
LIABILITIES AND EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	47		$	667	$	235	$	—		$	949
Due to affiliates	1,913			—		945		(2,858		)	—
Short-term debt	—			25		6		—			31
Long-term debt – current portion	—			1		2		—			3
Total current liabilities	1,960			693		1,188		(2,858		)	983
Long-term debt, net of current portion	1,851			15		125		—			1,991
Due to affiliates	—			881		—		(881		)	—
Pension plan liability	310			—		137		—			447
Other employee benefits liability	—			237		15		—			252
Deferred income taxes	—			—		22		—			22
Other liabilities	122			175		43		(210		)	130
OWENS CORNING STOCKHOLDERS’ EQUITY
Preferred stock	—			—		—		—			—
Common stock	1			—		—		—			1
Additional paid in capital	3,954			6,483		1,927		(8,410		)	3,954
Accumulated earnings	805			1,579		663		(2,242		)	805
Accumulated other comprehensive deficit	(550		)	—		—		—			(550		)
Cost of common stock in treasury	(518		)	—		—		—			(518		)
Total Owens Corning stockholders’ equity	3,692			8,062		2,590		(10,652		)	3,692
Noncontrolling interests	—			—		38		—			38
Total equity	3,692			8,062		2,628		(10,652		)	3,730
TOTAL LIABILITIES AND EQUITY	$	7,935		$	10,063	$	4,158	$	(14,601	)	$	7,555

OWENS CORNING AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THREE MONTHS ENDEDMARCH 31, 2015

(in millions)

	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations		Consolidated
NET CASH FLOW USED FOR OPERATING ACTIVITIES	$	—		$	(157	)	$	8		$	—	$	(149	)
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	(3		)	(43		)	(10		)	—		(56		)
Proceeds from the sale of assets (including alloy) or affiliates	—			—			—			—		—
Net cash flow used for investing activities	(3		)	(43		)	(10		)	—		(56		)
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	398			—			131			—		529
Payments on senior revolving credit and receivables securitization facilities	(247		)	—			—			—		(247		)
Net increase (decrease) in short-term debt	—			(25		)	8			—		(17		)
Cash dividends paid	(39		)	—			—			—		(39		)
Purchases of treasury stock	(19		)	—			—			—		(19		)
Other intercompany loans	(97		)	228			(131		)	—		—
Other	7			—			—			—		7
Net cash flow provided by financing activities	3			203			8			—		214
Effect of exchange rate changes on cash	—			—			1			—		1
Net increase in cash and cash equivalents	—			3			7			—		10
Cash and cash equivalents at beginning of period	—			1			66			—		67
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	—		$	4		$	73		$	—	$	77

OWENS CORNING AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THREE MONTHS ENDEDMARCH 31, 2014

(in millions)

	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations		Consolidated
NET CASH FLOW USED FOR OPERATING ACTIVITIES	$	—		$	(222	)	$	(50	)	$	—	$	(272	)
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	(3		)	(26		)	(22		)	—		(51		)
Proceeds from the sale of assets (including alloy) or affiliates	—			—			(3		)	—		(3		)
Net cash flow used for investing activities	(3		)	(26		)	(25		)	—		(54		)
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	433			—			51			—		484
Payments on senior revolving credit and receivables securitization facilities	(149		)	—			—			—		(149		)
Net increase (decrease) in short-term debt	—			1			23			—		24
Cash dividends paid	—			—			—			—		—
Purchase of treasury stock	(29		)	—			—			—		(29		)
Other intercompany loans	(257		)	247			10			—		—
Other	5			—			—			—		5
Net cash flow provided by financing activities	3			248			84			—		335
Effect of exchange rate changes on cash	—			—			(1		)	—		(1		)
Net increase in cash and cash equivalents	—			—			8			—		8
Cash and cash equivalents at beginning of period	—			3			54			—		57
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	—		$	3		$	62		$	—	$	65

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ACCOUNTING PRONOUNCEMENTS

3 Months Ended

Mar. 31, 2015

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

ACCOUNTING PRONOUNCEMENTS

ACCOUNTING PRONOUNCEMENTS

In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” (“ASU 2014-09”). ASU 2014-09 outlines a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This new revenue recognition model provides a five-step analysis in determining when and how revenue is recognized. The new model will require revenue recognition to depict the transfer of promised goods or services to customers in an amount that reflects the consideration a company expects to receive in exchange for those goods or services. The Company is currently assessing the impact that adopting this new accounting guidance will have on its consolidated financial statements and footnote disclosures. ASU 2014-09 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016, and early adoption is not permitted. Accordingly, the standard is effective for the Company on January 1, 2017.

In April 2015, the FASB issued ASU No. 2015-03, "Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs ("ASU 2015-03"). ASU 2015-03 requires debt issuance costs to be presented in the balance sheet as a direct deduction from the carrying value of the associated debt liability, consistent with the presentation of a debt discount. Prior to the issuance of the standard, debt issuance costs were required to be presented in the balance sheet as an asset. The Company is currently assessing the impact that adopting this new accounting guidance will have on its consolidated financial statements and footnote disclosures. ASU 2015-03 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015. Accordingly, the standard is effective for the Company on January 1, 2016.

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GOODWILL AND OTHER INTANGIBLE ASSETS (DETAIL) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Balance as of December 31, 2014	$ 1,168,000,000
Balance as of March 31, 2015	1,168,000,000
Intangible Assets [Line Items]
Gross carrying amount	1,192,000,000	1,190,000,000
Accumulated amortization	(179,000,000)	(173,000,000)
Intangible assets	1,013,000,000	1,017,000,000
Intangible assets amortization expense remainder of year	22,000,000
Intangible assets amortization expense year two	22,000,000
Intangible assets amortization expense year three	22,000,000
Intangible assets amortization expense year four	22,000,000
Intangible assets amortization expense year five	22,000,000
Finite-lived Intangible Assets Acquired	2,000,000
Customer Relationships
Intangible Assets [Line Items]
Weighted average useful life	19 years 0 months 0 days	19 years 0 months 0 days
Gross carrying amount	172,000,000	172,000,000
Accumulated amortization	(75,000,000)	(72,000,000)
Net carrying amount	97,000,000	100,000,000
Finite-lived Intangible Assets Acquired	0
Technology
Intangible Assets [Line Items]
Weighted average useful life	20 years 0 months 0 days	20 years 0 months 0 days
Gross carrying amount	193,000,000	193,000,000
Accumulated amortization	(85,000,000)	(83,000,000)
Net carrying amount	108,000,000	110,000,000
Finite-lived Intangible Assets Acquired	0
Franchise and Other Agreements
Intangible Assets [Line Items]
Weighted average useful life	11 years 0 months 0 days	12 years 0 months 0 days
Gross carrying amount	41,000,000	39,000,000
Accumulated amortization	(19,000,000)	(18,000,000)
Net carrying amount	22,000,000	21,000,000
Finite-lived Intangible Assets Acquired	2,000,000
Trademarks
Intangible Assets [Line Items]
Gross carrying amount	786,000,000	786,000,000
Indefinite-lived intangible assets	786,000,000	786,000,000
Finite-lived Intangible Assets Acquired	$ 0

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COST REDUCTION ACTIONS (TABLE) (Cost Reduction Actions 2014)

3 Months Ended

Mar. 31, 2015

Cost Reduction Actions 2014

Restructuring Cost and Reserve [Line Items]

Schedule of Restructuring Reserve by Type of Cost

The following table summarizes the status of the unpaid liabilities from the Company’s 2014 cost reduction actions (in millions):

	Balance at December 31, 2014		Costs Incurred		Payments		Foreign Currency Translation			Balance at March 31, 2015		Cumulative Charges Incurred
Severance	$	31	$	—	$	3	$	(1	)	$	27	$	36
Contract Termination	3		—		—		—			3		3
Total	$	34	$	—	$	3	$	(1	)	$	30	$	39

The Company expects the unpaid balance of these severance and contract termination charges to be paid over the next year.

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CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables)

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

Changes In Accumulated Other Comprehensive Income

CHANGES IN ACCUMULATED OTHER COMPREHENSIVE DEFICIT

The following table summarizes the changes in accumulated other comprehensive income (deficit) (“AOCI”) for the three months ended March 31, 2015 (in millions):

	Cash Flow Hedge Activity			Defined Benefit Pension Plan Activity			OCI Valuation Allowance Activity			Foreign Currency Translation Adjustment			Total
Balance as of December 31, 2014, net of tax	$	(5	)	$	(290	)	$	(122	)	$	(133	)	$	(550	)
Amounts classified into AOCI, net of tax (a)	1			2			2			(50		)	(45		)
Amounts reclassified from AOCI, net of tax	—			4			—			—			4
Change in AOCI, net of tax	1			6			2			(50		)	(41		)
Balance as of March 31, 2015, net of tax	$	(4	)	$	(284	)	$	(120	)	$	(183	)	$	(591	)

(a) $8 million of the amounts classified into AOCI, net of tax from Foreign Currency Translation Adjustment was due to the company's net investment hedge, as discussed in Note 4.

The following table summarizes the changes in accumulated other comprehensive income (deficit) (“AOCI”) for the three months ended March 31, 2014 (in millions):

	Cash Flow Hedge Activity		Defined Benefit Pension Plan Activity			OCI Valuation Allowance Activity			Foreign Currency Translation Adjustment			Total
Balance as of December 31, 2013, net of tax	$	—	$	(184	)	$	(115	)	$	2		$	(297	)
Amounts classified into AOCI, net of tax	—		4			—			(16		)	(12		)
Amounts reclassified from AOCI, net of tax	—		(1		)	—			—			(1		)
Change in AOCI, net of tax	—		3			—			(16		)	(13		)
Balance as of March 31, 2014, net of tax	$	—	$	(181	)	$	(115	)	$	(14	)	$	(310	)

Reclassification out of Accumulated Other Comprehensive Income

The following table presents the impact and respective location of AOCI reclassifications on the Consolidated Statements of Earnings, net of tax (in millions):

	Three Months Ended   March 31,
	2015		2014
Defined Benefit Pension Plan Activity:
Cost of sales	$	4	$	(1	)
Total reclassifications from AOCI	$	4	$	(1	)

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WARRANTIES (DETAIL) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Movement In Standard And Extended Product Warranty Increase Decrease Roll Forward
Product Warranty Accrual, Beginning Balance	$ 40
Amounts accrued for current year	5
Settlements of warranty claims	(3)
Product Warranty Accrual, Ending Balance	$ 42

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GOODWILL AND OTHER INTANGIBLE ASSETS (TABLE)

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The changes in the gross carrying amount of amortizable intangible assets by asset group are as follows (in millions):

	Customer relationships		Technology		Franchise and other agreements		Trademarks		Total
Balance at December 31, 2014	$	172	$	193	$	39	$	786	$	1,190
Additional Franchises and Agreements	—		—		2		—		2
Balance at March 31, 2015	$	172	$	193	$	41	$	786	$	1,192

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INVENTORIES (DETAIL) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Finished goods	$ 580	$ 568
Materials and supplies	245	249
Total inventories	$ 825	$ 817

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CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME

CHANGES IN ACCUMULATED OTHER COMPREHENSIVE DEFICIT

The following table summarizes the changes in accumulated other comprehensive income (deficit) (“AOCI”) for the three months ended March 31, 2015 (in millions):

	Cash Flow Hedge Activity			Defined Benefit Pension Plan Activity			OCI Valuation Allowance Activity			Foreign Currency Translation Adjustment			Total
Balance as of December 31, 2014, net of tax	$	(5	)	$	(290	)	$	(122	)	$	(133	)	$	(550	)
Amounts classified into AOCI, net of tax (a)	1			2			2			(50		)	(45		)
Amounts reclassified from AOCI, net of tax	—			4			—			—			4
Change in AOCI, net of tax	1			6			2			(50		)	(41		)
Balance as of March 31, 2015, net of tax	$	(4	)	$	(284	)	$	(120	)	$	(183	)	$	(591	)

(a) $8 million of the amounts classified into AOCI, net of tax from Foreign Currency Translation Adjustment was due to the company's net investment hedge, as discussed in Note 4.

The following table summarizes the changes in accumulated other comprehensive income (deficit) (“AOCI”) for the three months ended March 31, 2014 (in millions):

	Cash Flow Hedge Activity		Defined Benefit Pension Plan Activity			OCI Valuation Allowance Activity			Foreign Currency Translation Adjustment			Total
Balance as of December 31, 2013, net of tax	$	—	$	(184	)	$	(115	)	$	2		$	(297	)
Amounts classified into AOCI, net of tax	—		4			—			(16		)	(12		)
Amounts reclassified from AOCI, net of tax	—		(1		)	—			—			(1		)
Change in AOCI, net of tax	—		3			—			(16		)	(13		)
Balance as of March 31, 2014, net of tax	$	—	$	(181	)	$	(115	)	$	(14	)	$	(310	)

The following table presents the impact and respective location of AOCI reclassifications on the Consolidated Statements of Earnings, net of tax (in millions):

	Three Months Ended   March 31,
	2015		2014
Defined Benefit Pension Plan Activity:
Cost of sales	$	4	$	(1	)
Total reclassifications from AOCI	$	4	$	(1	)

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CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 9	$ 10
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	10,000,000	10,000,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	400,000,000	400,000,000
Common stock, issued	135,500,000	135,500,000
Common stock, outstanding	118,000,000	117,800,000
Treasury stock shares	17,500,000	17,700,000

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GENERAL

3 Months Ended

Mar. 31, 2015

General Disclosure [Abstract]

GENERAL

GENERAL

Unless the context requires otherwise, the terms “Owens Corning,” “Company,” “we” and “our” in this report refer to Owens Corning, a Delaware corporation, and its subsidiaries.

The Consolidated Financial Statements included in this report are unaudited, pursuant to certain rules and regulations of the Securities and Exchange Commission, and include, in the opinion of the Company, adjustments necessary for a fair statement of the results for the periods indicated, which, however, are not necessarily indicative of results which may be expected for the full year. The December 31, 2014, balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States (U.S.). In connection with the Consolidated Financial Statements and Notes included in this report, reference is made to the Consolidated Financial Statements and Notes contained in the Company’s 2014 annual report on Form 10-K. Certain reclassifications have been made to the periods presented for 2014 to conform to the classifications used in the periods presented for 2015.

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DERIVATIVE FINANCIAL INSTRUMENTS

3 Months Ended

Mar. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVE FINANCIAL INSTRUMENTS

DERIVATIVE FINANCIAL INSTRUMENTS

The Company is exposed to, among other risks, the impact of changes in commodity prices, foreign currency exchange rates, and interest rates in the normal course of business. The Company’s risk management program is designed to manage the exposure and volatility arising from these risks, and utilizes derivative financial instruments to offset a portion of these risks. The Company uses derivative financial instruments only to the extent necessary to hedge identified business risks, and does not enter into such transactions for trading purposes.

The Company generally does not require collateral or other security with counterparties to these financial instruments and is therefore subject to credit risk in the event of nonperformance; however, the Company monitors credit risk and currently does not anticipate nonperformance by other parties. Contracts with counterparties generally contain right of offset provisions. These provisions effectively reduce the Company’s exposure to credit risk in situations where the Company has gain and loss positions outstanding with a single counterparty. It is the Company’s policy to offset on the Consolidated Balance Sheets the amounts recognized for derivative instruments with any cash collateral arising from derivative instruments executed with the same counterparty under a master netting agreement. As of March 31, 2015, and December 31, 2014, the Company did not have any amounts on deposit with any of its counterparties, nor did any of its counterparties have any amounts on deposit with the Company.

The following table presents the fair value of derivatives and hedging instruments and the respective location on the Consolidated Balance Sheets (in millions):

		Fair Value at
	Location	March 31, 2015		December 31, 2014
Derivative assets designated as hedging instruments:
Net investment hedges:
Cross currency swaps	Other current assets	$	3	$	—
Cross currency swaps	Other non current assets	$	9	$	—
Amount of gain recognized in OCI (effective portion)	OCI	$	12	$	—
Fair value hedges:
Interest rate swaps	Other non current assets	$	5	$	—
Derivative liabilities designated as hedging instruments:
Cash flow hedges:
Natural gas and electricity, and foreign exchange contracts	Accounts payable and accrued liabilities	$	6	$	9
Amount of loss recognized in OCI (effective portion)	OCI	$	7	$	8
Fair value hedges:
Interest rate swaps	Other Liabilities	$	—	$	(3	)
Derivative assets not designated as hedging instruments:
Foreign exchange contracts	Other current assets	$	1	$	1
Derivative liabilities not designated as hedging instruments:
Foreign exchange contracts	Accounts payable and accrued liabilities	$	1	$	2

The following table presents the impact and respective location of derivative activities on the Consolidated Statements of Earnings (in millions):

		Three Months Ended   March 31,
	Location	2015		2014
Derivative activity designated as hedging instruments:
Natural gas and electricity:
Amount of loss reclassified from OCI into earnings (effective portion)	Cost of sales	$	3	$	(1	)
Derivative activity not designated as hedging instruments:
Foreign currency exchange contract:
Amount of loss recognized in earnings (a)	Other expenses (income), net	$	1	$	(1	)

(a) Losses related to foreign currency derivatives were substantially offset by net revaluation impacts on foreign denominated balance sheet exposures, which were also recorded in other expenses (income), net.

Cash Flow Hedges

The Company uses forward and swap contracts, which qualify as cash flow hedges, to manage forecasted exposure to natural gas and electricity prices. The effective portion of the change in the fair value of cash flow hedges is deferred in accumulated OCI and is subsequently recognized in Cost of Sales on the Consolidated Statements of Earnings for commodity hedges, when the hedged item impacts earnings. Changes in the fair value of derivative assets and liabilities designated as hedging instruments are shown in Other within operating activities on the Consolidated Statements of Cash Flows. Any portion of the change in fair value of derivatives designated as hedging instruments that is determined to be ineffective is recorded in Other expenses (income), net on the Consolidated Statements of Earnings.

The Company currently has natural gas derivatives designated as hedging instruments that mature within 15 months. The Company’s policy for natural gas exposures is to hedge up to 75% of its total forecasted exposures for the next two months, up to 60% of its total forecasted exposures for the following four months, and lesser amounts for the remaining periods. The Company's policy for electricity exposures is to hedge up to 75% of its total forecasted exposures for the current calendar year and up to 65% of its total forecasted exposures for the first calendar year forward. Based on market conditions, approved variation from the standard policy may occur. The Company performs an analysis for effectiveness of its derivatives designated as hedging instruments at the end of each quarter based on the terms of the contract and the underlying item being hedged.

As of March 31, 2015, $7 million of losses included in accumulated OCI on the Consolidated Balance Sheets relate to contracts that are expected to impact earnings during the next 12 months. Transactions and events that are expected to occur over the next 12 months that will necessitate recognizing these deferred amounts include the recognition of the hedged item through earnings.

Fair Value Hedges

The Company manages its interest rate exposure by balancing the mixture of its fixed and variable rate instruments through interest rate swaps. The swaps are carried at fair value and recorded as other assets or liabilities, with the offset to long-term debt on the Consolidated Balance Sheets. Changes in the fair value of these swaps and that of the related debt are recorded in Interest expense, net on the Consolidated Statements of Earnings.

Net Investment Hedges

During the first quarter of 2015, the Company entered into cross currency forward contracts to hedge a portion of the net investment in foreign subsidiaries against fluctuations in foreign exchange rates. For derivative instruments that are designated and qualify as hedges of net investments in foreign operations, settlements and changes in fair values of the derivative instruments are recognized in Currency translation adjustment, a component of Accumulated OCI, to offset the changes in the values of the net investments being hedged. Any portion of net investment hedges that is determined to be ineffective is recorded in Other expenses (income), net on the Consolidated Statements of Earnings.

Other Derivatives

The Company uses forward currency exchange contracts to manage existing exposures to foreign exchange risk related to assets and liabilities recorded on the Consolidated Balance Sheets. Gains and losses resulting from the changes in fair value of these instruments are recorded in Other expenses (income), net on the Consolidated Statements of Earnings.

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SEGMENT INFORMATION

3 Months Ended

Mar. 31, 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   March 31,
	2015			2014
Reportable Segments
Composites	$	478		$	477
Insulation	379			355
Roofing	393			497
Total reportable segments	1,250			1,329
Corporate eliminations	(43		)	(51		)
NET SALES	$	1,207		$	1,278

External Customer Sales by Geographic Region
United States	$	816	$	889
Europe	129		149
Asia Pacific	140		137
Other	122		103
NET SALES	$	1,207	$	1,278

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   March 31,
	2015			2014
Reportable Segments
Composites	$	60		$	27
Insulation	7			1
Roofing	20			80
Total reportable segments	87			108
Charges related to cost reduction actions	—			(12		)
Other items related to cost reduction actions	(2		)	—
Gain on sale of Hangzhou, China facility	—			45
Net loss related to Hurricane Sandy	—			(2		)
General corporate expense and other	(27		)	(31		)
EBIT	$	58		$	108

XML

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (TABLE)

3 Months Ended

Mar. 31, 2015

Mar. 31, 2014

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Condensed Consolidating Statement of Earnings

	Parent			Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Consolidated
NET SALES	$	—		$	841	$	461	$	(95	)	$	1,207
COST OF SALES	—			721		372		(95		)	998
Gross margin	—			120		89		—			209
OPERATING EXPENSES
Marketing and administrative expenses	32			68		29		—			129
Science and technology expenses	—			14		3		—			17
Charges related to cost reduction actions	—			—		—		—			—
Other expenses (income), net	(8		)	6		7		—			5
Total operating expenses	24			88		39		—			151
EARNINGS BEFORE INTEREST AND TAXES	(24		)	32		50		—			58
Interest expense, net	24			1		1		—			26
EARNINGS BEFORE TAXES	(48		)	31		49		—			32
Less: Income tax expense (benefit)	(15		)	9		19		—			13
Equity in net earnings of subsidiaries	51			29		—		(80		)	—
NET EARNINGS	18			51		30		(80		)	19
Less: Net earnings attributable to noncontrolling interests	—			—		1		—			1
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	$	18		$	51	$	29	$	(80	)	$	18

OWENS CORNING AND SUBSIDIARIES

CONSOLIDATING STATEMENT OF EARNINGS

FOR THE THREE MONTHS ENDEDMARCH 31, 2014

(in millions)

	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
NET SALES	$	—		$	911		$	456		$	(89	)	$	1,278
COST OF SALES	—			751			382			(89		)	1,044
Gross margin	—			160			74			—			234
OPERATING EXPENSES
Marketing and administrative expenses	32			66			34			—			132
Science and technology expenses	—			15			4			—			19
Charges related to cost reduction actions	—			1			11			—			12
Other expenses (income), net	(10		)	2			(29		)	—			(37		)
Total operating expenses	22			84			20			—			126
EARNINGS BEFORE INTEREST AND TAXES	(22		)	76			54			—			108
Interest expense, net	26			1			—			—			27
EARNINGS BEFORE TAXES	(48		)	75			54			—			81
Less: Income tax expense (benefit)	(18		)	(13		)	(8		)	—			(39		)
Equity in net earnings of subsidiaries	150			62			—			(212		)	—
NET EARNINGS	120			150			62			(212		)	120
Less: Net earnings attributable to noncontrolling interests	—			—			—			—			—
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	$	120		$	150		$	62		$	(212	)	$	120

Condensed Consolidating Statement Of Comprehensive Earnings

OWENS CORNING AND SUBSIDIARIES

CONSOLIDATING STATEMENT OF COMPREHENSIVE EARNINGS (LOSS)

FOR THE THREE MONTHS ENDEDMARCH 31, 2015

(in millions)

	Parent			Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Consolidated
NET EARNINGS	$	18		$	51	$	30	$	(80	)	$	19
Currency translation adjustment (net of tax)	(50		)	—		—		—			(50		)
Pension and other postretirement adjustment (net of tax)	8			—		—		—			8
Deferred gain on hedging (net of tax)	1			—		—		—			1
COMPREHENSIVE EARNINGS (LOSS)	(23		)	51		30		(80		)	(22		)
Less: Comprehensive earnings attributable to noncontrolling interests	—			—		1		—			1
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	$	(23	)	$	51	$	29	$	(80	)	$	(23	)

OWENS CORNING AND SUBSIDIARIES

CONSOLIDATING STATEMENT OF COMPREHENSIVE EARNINGS (LOSS)

FOR THE THREE MONTHS ENDEDMARCH 31, 2014

(in millions)

	Parent			Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Consolidated
NET EARNINGS	$	120		$	150	$	62	$	(212	)	$	120
Currency translation adjustment (net of tax)	(16		)	—		—		—			(16		)
Pension and other postretirement adjustment (net of tax)	3			—		—		—			3
Deferred gain on hedging (net of tax)	—			—		—		—			—
COMPREHENSIVE EARNINGS (LOSS)	107			150		62		(212		)	107
Less: Comprehensive earnings attributable to noncontrolling interests	—			—		—		—			—
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	$	107		$	150	$	62	$	(212	)	$	107

Condensed Consolidating Balance Sheet

OWENS CORNING AND SUBSIDIARIES

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF MARCH 31, 2015

(in millions)

ASSETS	Parent			Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
CURRENT ASSETS
Cash and cash equivalents	$	—		$	4	$	73	$	—		$	77
Receivables, less allowances	—			—		844		—			844
Due from affiliates	—			2,666		76		(2,742		)	—
Inventories	—			540		285		—			825
Assets held for sale	—			—		14		—			14
Other current assets	8			138		89		—			235
Total current assets	8			3,348		1,381		(2,742		)	1,995
Investment in subsidiaries	7,502			2,457		559		(10,518		)	—
Due from affiliates	—			—		826		(826		)	—
Property, plant and equipment, net	359			1,404		1,088		—			2,851
Goodwill	—			1,127		41		—			1,168
Intangible assets	—			985		231		(203		)	1,013
Deferred income taxes	31			380		23		—			434
Other non-current assets	42			66		127		—			235
TOTAL ASSETS	$	7,942		$	9,767	$	4,276	$	(14,289	)	$	7,696
LIABILITIES AND EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	57		$	454	$	384	$	—		$	895
Due to affiliates	1,816			—		926		(2,742		)	—
Short-term debt	—			—		14		—			14
Long-term debt – current portion	—			1		2		—			3
Total current liabilities	1,873			455		1,326		(2,742		)	912
Long-term debt, net of current	2,004			15		255		—			2,274
Due to affiliates	—			826		—		(826		)	—
Pension plan liability	302			—		122		—			424
Other employee benefits liability	—			235		14		—			249
Deferred income taxes	—			—		22		—			22
Other liabilities	119			175		41		(203		)	132
OWENS CORNING STOCKHOLDERS’ EQUITY
Preferred stock	—			—		—		—			—
Common stock	1			—		—		—			1
Additional paid in capital	3,946			6,433		1,763		(8,196		)	3,946
Accumulated earnings	803			1,628		694		(2,322		)	803
Accumulated other comprehensive deficit	(591		)	—		—		—			(591		)
Cost of common stock in treasury	(515		)	—		—		—			(515		)
Total Owens Corning stockholders’ equity	3,644			8,061		2,457		(10,518		)	3,644
Noncontrolling interests	—			—		39		—			39
Total equity	3,644			8,061		2,496		(10,518		)	3,683
TOTAL LIABILITIES AND EQUITY	$	7,942		$	9,767	$	4,276	$	(14,289	)	$	7,696

OWENS CORNING AND SUBSIDIARIES

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF DECEMBER 31, 2014

(in millions)

ASSETS	Parent			Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
CURRENT ASSETS
Cash and cash equivalents	$	—		$	1	$	66	$	—		$	67
Receivables, less allowances	—			—		674		—			674
Due from affiliates	—			2,858		—		(2,858		)	—
Inventories	—			527		290		—			817
Assets held for sale	—			—		16		—			16
Other current assets	7			132		94		—			233
Total current assets	7			3,518		1,140		(2,858		)	1,807
Investment in subsidiaries	7,504			2,590		558		(10,652		)	—
Due from affiliates	—			—		881		(881		)	—
Property, plant and equipment, net	359			1,397		1,143		—			2,899
Goodwill	—			1,127		41		—			1,168
Intangible assets	—			989		238		(210		)	1,017
Deferred income taxes	35			380		29		—			444
Other non-current assets	30			62		128		—			220
TOTAL ASSETS	$	7,935		$	10,063	$	4,158	$	(14,601	)	$	7,555
LIABILITIES AND EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	47		$	667	$	235	$	—		$	949
Due to affiliates	1,913			—		945		(2,858		)	—
Short-term debt	—			25		6		—			31
Long-term debt – current portion	—			1		2		—			3
Total current liabilities	1,960			693		1,188		(2,858		)	983
Long-term debt, net of current portion	1,851			15		125		—			1,991
Due to affiliates	—			881		—		(881		)	—
Pension plan liability	310			—		137		—			447
Other employee benefits liability	—			237		15		—			252
Deferred income taxes	—			—		22		—			22
Other liabilities	122			175		43		(210		)	130
OWENS CORNING STOCKHOLDERS’ EQUITY
Preferred stock	—			—		—		—			—
Common stock	1			—		—		—			1
Additional paid in capital	3,954			6,483		1,927		(8,410		)	3,954
Accumulated earnings	805			1,579		663		(2,242		)	805
Accumulated other comprehensive deficit	(550		)	—		—		—			(550		)
Cost of common stock in treasury	(518		)	—		—		—			(518		)
Total Owens Corning stockholders’ equity	3,692			8,062		2,590		(10,652		)	3,692
Noncontrolling interests	—			—		38		—			38
Total equity	3,692			8,062		2,628		(10,652		)	3,730
TOTAL LIABILITIES AND EQUITY	$	7,935		$	10,063	$	4,158	$	(14,601	)	$	7,555

Condensed Consolidating Statement of Cash Flows

OWENS CORNING AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THREE MONTHS ENDEDMARCH 31, 2015

(in millions)

	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations		Consolidated
NET CASH FLOW USED FOR OPERATING ACTIVITIES	$	—		$	(157	)	$	8		$	—	$	(149	)
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	(3		)	(43		)	(10		)	—		(56		)
Proceeds from the sale of assets (including alloy) or affiliates	—			—			—			—		—
Net cash flow used for investing activities	(3		)	(43		)	(10		)	—		(56		)
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	398			—			131			—		529
Payments on senior revolving credit and receivables securitization facilities	(247		)	—			—			—		(247		)
Net increase (decrease) in short-term debt	—			(25		)	8			—		(17		)
Cash dividends paid	(39		)	—			—			—		(39		)
Purchases of treasury stock	(19		)	—			—			—		(19		)
Other intercompany loans	(97		)	228			(131		)	—		—
Other	7			—			—			—		7
Net cash flow provided by financing activities	3			203			8			—		214
Effect of exchange rate changes on cash	—			—			1			—		1
Net increase in cash and cash equivalents	—			3			7			—		10
Cash and cash equivalents at beginning of period	—			1			66			—		67
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	—		$	4		$	73		$	—	$	77

OWENS CORNING AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THREE MONTHS ENDEDMARCH 31, 2014

(in millions)

	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations		Consolidated
NET CASH FLOW USED FOR OPERATING ACTIVITIES	$	—		$	(222	)	$	(50	)	$	—	$	(272	)
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	(3		)	(26		)	(22		)	—		(51		)
Proceeds from the sale of assets (including alloy) or affiliates	—			—			(3		)	—		(3		)
Net cash flow used for investing activities	(3		)	(26		)	(25		)	—		(54		)
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	433			—			51			—		484
Payments on senior revolving credit and receivables securitization facilities	(149		)	—			—			—		(149		)
Net increase (decrease) in short-term debt	—			1			23			—		24
Cash dividends paid	—			—			—			—		—
Purchase of treasury stock	(29		)	—			—			—		(29		)
Other intercompany loans	(257		)	247			10			—		—
Other	5			—			—			—		5
Net cash flow provided by financing activities	3			248			84			—		335
Effect of exchange rate changes on cash	—			—			(1		)	—		(1		)
Net increase in cash and cash equivalents	—			—			8			—		8
Cash and cash equivalents at beginning of period	—			3			54			—		57
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	—		$	3		$	62		$	—	$	65

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SEGMENT INFORMATION (TABLE)

3 Months Ended

Mar. 31, 2015

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   March 31,
	2015			2014
Reportable Segments
Composites	$	478		$	477
Insulation	379			355
Roofing	393			497
Total reportable segments	1,250			1,329
Corporate eliminations	(43		)	(51		)
NET SALES	$	1,207		$	1,278

Schedule of Revenues by Geographical Areas

External Customer Sales by Geographic Region
United States	$	816	$	889
Europe	129		149
Asia Pacific	140		137
Other	122		103
NET SALES	$	1,207	$	1,278

Schedule of Earnings before Interest and Taxes

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

	Three Months Ended   March 31,
	2015			2014
Reportable Segments
Composites	$	60		$	27
Insulation	7			1
Roofing	20			80
Total reportable segments	87			108
Charges related to cost reduction actions	—			(12		)
Other items related to cost reduction actions	(2		)	—
Gain on sale of Hangzhou, China facility	—			45
Net loss related to Hurricane Sandy	—			(2		)
General corporate expense and other	(27		)	(31		)
EBIT	$	58		$	108

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PROPERTY, PLANT AND EQUIPMENT (TABLE)

3 Months Ended

Mar. 31, 2015

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, plant and equipment consist of the following (in millions):

	March 31, 2015			December 31, 2014
Land	$	191		$	196
Buildings and leasehold improvements	785			789
Machinery and equipment	3,389			3,405
Construction in progress	238			233
	4,603			4,623
Accumulated depreciation	(1,752		)	(1,724		)
Property, plant and equipment, net	$	2,851		$	2,899

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STOCK COMPENSATION (TABLE)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity

The following table summarizes the Company’s stock option activity for the three months ended March 31, 2015:

	Three Months Ended March 31, 2015
	Number of Options		Weighted- Average Exercise Price
Beginning Balance	2,754,895		$	31.04
Exercised	(236,875	)	29.34
Forfeited	(19,500	)	37.84
Ending Balance	2,498,520		$	31.15

Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable

The following table summarizes information about the Company’s options outstanding and exercisable:

	Options Outstanding				Options Exercisable
	Options Outstanding	Weighted-Average			Number Exercisable at March 31, 2015	Weighted-Average
Range of Exercise Prices		Remaining Contractual Life	Exercise Price			Remaining Contractual Life	Exercise Price
$13.89-$42.16	2,498,520	4.71	$	31.15	2,011,245	4.01	$	29.40

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

A summary of the status of the Company’s plans that had restricted stock issued as of March 31, 2015, and changes during the three months ended March 31, 2015, are presented below:

	Three Months Ended March 31, 2015
	Number of Shares		Weighted-Average Grant-Date Fair Value
Beginning Balance	1,727,741		$	33.58
Granted	552,753		39.37
Vested	(419,147	)	35.83
Forfeited	(30,772	)	37.49
Ending Balance	1,830,575		$	34.89

Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest

A summary of the status of the Company’s plans that had PSUs issued as of March 31, 2015, and changes during the three months ended March 31, 2015, is presented below:

	Three Months Ended March 31, 2015
	Number of PSUs		Weighted-Average Grant-Date Fair Value
Beginning Balance	416,250		$	49.53
Granted	251,600		44.98
Forfeited	(15,850	)	50.16
Ending Balance	652,000		$	47.76

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EARNINGS PER SHARE (DETAIL) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Apr. 25, 2012
Equity Class Of Treasury Stock [Line Items]
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	7,400,000
Net earnings attributable to Owens Corning	$ 18	$ 120
Weighted-average number of shares outstanding used for basic earnings per share	117,800,000	117,800,000
Non-vested restricted and performance shares	300,000	400,000
Options to purchase common stock	400,000	500,000
Weighted-average number of shares outstanding and common equivalent shares used for diluted earnings per share	118,500,000	118,700,000
Basic (in dollars per share)	$ 0.15	$ 1.02
Diluted (in dollars per share)	$ 0.15	$ 1.01
Stock Repurchased During Period, Shares	300,000
Payments for Repurchase of Equity	$ 13
Repurchase Program 2012
Equity Class Of Treasury Stock [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased			10,000,000
Restricted Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount	100,000	500,000
Equity Option
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount	600,000	700,000
Performance Shares [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount		100,000

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COST REDUCTION ACTIONS (DETAIL) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014	Dec. 31, 2014
Restructuring Reserve Roll Forward
Restructuring Reserve, Beginning Balance	$ 34
Charges related to cost reduction actions	0	12
Restructuring Reserve, Ending Balance	30
Cumulative charges incurred	39
Other costs related to restructuring	(2)
Restructuring Reserve	30
Payments for Restructuring	3
Restructuring Reserve, Translation and Other Adjustment	(1)
Employee Severance
Restructuring Reserve Roll Forward
Restructuring Reserve, Beginning Balance	31
Restructuring Reserve, Ending Balance	27
Cumulative charges incurred	36
Restructuring Reserve	27
Payments for Restructuring	3
Restructuring Reserve, Translation and Other Adjustment	(1)
Contract Termination
Restructuring Reserve Roll Forward
Restructuring Reserve, Beginning Balance	3
Restructuring Reserve, Ending Balance	3
Cumulative charges incurred	3
Restructuring Reserve	3
Payments for Restructuring	0
Restructuring Reserve, Translation and Other Adjustment	0
Cost Reduction Actions 2014 | Composite
Restructuring Reserve Roll Forward
Severance Costs			16
Loss on contract termination for default			3
Other costs related to restructuring	2		1
Cost Reduction Actions 2014 | Building Materials
Restructuring Reserve Roll Forward
Severance Costs				9
Cost Reduction Actions 2014 | Termination of Contract with Utility Service Provider [Member]
Restructuring Reserve Roll Forward
Cumulative charges incurred		14
Severance Costs		11
Loss on contract termination for default		$ 3

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DERIVATIVE FINANCIAL INSTRUMENTS INCOME STATEMENT (DETAIL) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Cost Of Sales | Designated as Hedging Instrument | Natural Gas Contract
Derivative Instruments Gain Loss [Line Items]
Amount of loss reclassified from OCI into earnings (effective portion)	$ 3		$ (1)
Other Expense | Nondesignated | Foreign Exchange Contract
Derivative Instruments Gain Loss [Line Items]
Amount of loss recognized in earnings (a)	$ 1	[1]	$ (1)	[1]

[1] Losses related to foreign currency derivatives were substantially offset by net revaluation impacts on foreign denominated balance sheet exposures, which were also recorded in other expenses (income), net.

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
NET EARNINGS	$ 19	$ 120
Currency translation adjustment (net of tax)	(50)	(16)
Pension and other postretirement adjustment (net of tax of $(2) and $(1) three months ended March 31, 2015 and 2014, respectively)	8	3
Deferred gain on hedging (net of tax of $(1) and $0 for the three months ended March 31, 2015 and 2014, respectively)	1	0
COMPREHENSIVE EARNINGS (LOSS)	(22)	107
Less: Comprehensive earnings attributable to noncontrolling interests	1	0
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	$ (23)	$ 107

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DIVESTITURES

3 Months Ended

Mar. 31, 2015

Business Divestitures [Abstract]

DIVESTITURES

DIVESTITURES

On September 13, 2013, the Company signed an agreement to sell its Composites glass reinforcements facility in Hangzhou, People's Republic of China, for total consideration of approximately $70 million to the Hangzhou Municipal Land Reservation Center and the Development and Construction Management Office of Taoyuan New Zone of Gongshu District in Hangzhou(“Hangzhou Government”), both of which are unrelated third party government entities. In the first quarter of 2014, the Company returned the land to the Hangzhou Government and recorded a net gain of $45 million, which was recorded in Other expenses(income), net on the Consolidated Statements of Earnings (Loss). The balance of the consideration, approximately $14 million, has been recorded in Other current assets on the Consolidated Balance Sheets. Final payment is due upon the Hangzhou government’s completion of demolition activities, currently forecast for the second half of 2015.

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CONDENSED CONSOLIDATED BALANCE SHEET (USD $) In Millions, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014		Mar. 31, 2014	Dec. 31, 2013
CURRENT ASSETS
Cash and cash equivalents	$ 77		$ 67		$ 65	$ 57
Receivables, less allowances of $9 at March 31, 2015, and $10 at December 31, 2014	844		674
Inventories	825		817
Assets held for sale	14		16
Other current assets	235		233
Total current assets	1,995		1,807
Property, plant and equipment, net	2,851		2,899
Goodwill	1,168		1,168
Intangible assets	1,013		1,017
Deferred income taxes	434		444
Other non-current assets	235		220
TOTAL ASSETS	7,696		7,555
CURRENT LIABILITIES
Accounts payable and accrued liabilities	895		949
Short-term debt	14		31
Long-term debt – current portion	3		3
Total current liabilities	912		983
Long-term debt, net of current portion	2,274		1,991
Pension plan liability	424		447
Other employee benefits liability	249		252
Deferred income taxes	22		22
Other liabilities	132		130
OWENS CORNING STOCKHOLDERS’ EQUITY
Preferred stock, par value $0.01 per share (a)	0	[1]	0	[1]
Common stock, par value $0.01 per share (b)	1	[2]	1	[2]
Additional paid in capital	3,946		3,954
Accumulated earnings	803		805
Accumulated other comprehensive deficit	(591)		(550)		(310)	(297)
Cost of common stock in treasury (c)	(515)	[3]	(518)	[3]
Total Owens Corning stockholders’ equity	3,644		3,692
Noncontrolling interests	39		38
Total equity	3,683		3,730
TOTAL LIABILITIES AND EQUITY	$ 7,696		$ 7,555

[1] 10 shares authorized; none issued or outstanding at March 31, 2015, and

[2] 400 shares authorized; 135.5 issued and 118.0 outstanding at March 31, 2015; 135.5 issued and 117.8 outstanding at

[3] 17.5 shares at March 31, 2015, and 17.7 shares at

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CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (DETAIL) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Type of Expense From AOCI to the Statement of Earnings [Line Items]
Expense on the Statement of Earnings	$ 4	$ (1)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cash flow hedge activity beginning balance	(5)	0
Defined benefit pension plan activity beginning balance	(290)	(184)
OCI valuation allowance activity beginning balance	(122)	(115)
Foreign currency translation adjustment beginning balance	(133)	2
Total AOCI beginning balance	(550)	(297)
Unrealized gain (loss) on derivatives arising during period (net of tax)	1	0
Reclassification adjustment from AOCI on derivatives (net of tax)	0	0
Deferred loss on hedging transactions (net of tax)	1	0
Translation impact on non US plans (net of tax)	2	4
Reclassification adjustment from AOCI postretirement benefit plans tax	4	(1)
Pension and other postretirement adjustment (net of tax)	8	3
Change in valuation amount deferred tax asset	2	0
Reclassification AOCI valuation	0	0
AOCI valuation (net of tax)	2	0
Foreign currency transaction and translation gain (loss) arising during period (net of tax)	(50)	(16)
Other comprehensive income translation impact	0	0
Foreign currency transaction and translation adjustment (net of tax)	(50)	(16)
Amounts classified into AOCI	(45)	(12)
Amounts reclassified rrom AOCI	4	(1)
Change in AOCI	(41)	(13)
Cash flow hedge activity ending balance	(4)	0
Defined benefit pension plan activity ending balance	(284)	(181)
OCI valuation allowance activity ending balance	(120)	(115)
Foreign currency translation adjustment ending balance	(183)	(14)
Total AOCI ending balance	(591)	(310)
Defined Benefit pension plan activity less valuation allowance ending balance	(6)
Net Investment Hedge Amount In Currency Translation Adjustment	8
Cost Of Sales | Pension Plan, Defined Benefit
Type of Expense From AOCI to the Statement of Earnings [Line Items]
Expense on the Statement of Earnings	$ 4	$ (1)

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CONSOLIDATED STATEMENTS OF EARNINGS (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
NET SALES	$ 1,207	$ 1,278
COST OF SALES	998	1,044
Gross margin	209	234
OPERATING EXPENSES
Marketing and administrative expenses	129	132
Science and technology expenses	17	19
Charges related to cost reduction actions	0	12
Other expenses (income), net	5	(37)
Total operating expenses	151	126
EARNINGS BEFORE INTEREST AND TAXES	58	108
Interest expense, net	26	27
EARNINGS BEFORE TAXES	32	81
Less: Income tax expense (benefit)	13	(39)
NET EARNINGS	19	120
Less: Net earnings attributable to noncontrolling interests	1	0
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	$ 18	$ 120
EARNINGS PER COMMON SHARE ATTRIBUTABLE TO OWENS CORNING COMMON STOCKHOLDERS
Basic (in dollars per share)	$ 0.15	$ 1.02
Diluted (in dollars per share)	$ 0.15	$ 1.01
Dividend (in dollars per share)	$ 0.17	$ 0.16
WEIGHTED AVERAGE COMMON SHARES
Basic (in shares)	117.8	117.8
Diluted (in shares)	118.5	118.7

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DEBT (DETAIL) (USD $) In Millions, unless otherwise specified	12 Months Ended	3 Months Ended			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2012	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2013	Oct. 17, 2012	Dec. 31, 2011	Nov. 12, 2014
Long-Term Debt [Line Items]
Long Term Debt		$ 1,994		$ 2,277	$ 1,994
Fair Value Adjustment to Debt		8		9	8
Long Term Debt Current		3		3	3
Long Term Debt Noncurrent		1,991		2,274	1,991
Interest Rate Swap Agreement, Principal Amount						100
Line Of Credit Facility Maximum Borrowing Capacity	800
Short-term debt		31		14	31
Short-term Debt, Weighted Average Interest Rate		0.00%		0.00%	0.00%
letters of credit sublimit	100
Senior Notes Due 2016
Long-Term Debt [Line Items]
Long Term Debt		158		158	158
Debt Instrument Face Amount							650
Repayments of Debt		242	250
Debt Instrument, Interest Rate, Stated Percentage								0.00%
Senior Notes Due 2019
Long-Term Debt [Line Items]
Long Term Debt		143		143	143
Debt Instrument Face Amount							350
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate		9.00%		9.00%	9.00%
Repayments of Debt		105	100
Senior Notes Due 2022
Long-Term Debt [Line Items]
Long Term Debt		600		600	600
Debt Instrument Face Amount							600
Debt Instrument, Interest Rate, Stated Percentage								0.00%
Senior Notes Due 2036
Long-Term Debt [Line Items]
Long Term Debt		540		540	540
Debt Instrument Face Amount							540
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate		7.00%		7.00%	7.00%
Letter Of Credit Under Receivables Purchase Agreement
Long-Term Debt [Line Items]
Long Term Debt		106		237	106
Line Of Credit Facility Amount Outstanding				237
Letters of Credit Outstanding, Amount				13
Line of Credit Facility, Current Borrowing Capacity				250
Line of Credit Facility, Current Borrowing Capacity, In Fourth Quarter				200
Senior Revolving Credit Facility B
Long-Term Debt [Line Items]
Long Term Debt		0		151	0
Line Of Credit Facility Amount Outstanding				151
Letters of Credit Outstanding, Amount				9
Line of Credit Facility, Current Borrowing Capacity				640
Capital Lease Obligations
Long-Term Debt [Line Items]
Long Term Debt		47		46	47
Senior Notes Due 2024 [Member]
Long-Term Debt [Line Items]
Long Term Debt		392		393	392
Debt Instrument Face Amount									400
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate									0.00%
Debt Issuance Cost					$ 4

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INVENTORIES (TABLE)

3 Months Ended

Mar. 31, 2015

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

Inventories consist of the following (in millions):

	March 31, 2015		December 31, 2014
Finished goods	$	580	$	568
Materials and supplies	245		249
Total inventories	$	825	$	817

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FAIR VALUE MEASUREMENT

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENT

FAIR VALUE MEASUREMENT

The Company classifies and discloses assets and liabilities carried at fair value in one of the following three categories:

Level 1: Quoted market prices in active markets for identical assets or liabilities.

Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data.

Level 3: Unobservable inputs that are not corroborated by market data.

Items Measured at Fair Value

The carrying value of cash and cash equivalents, accounts receivable and short-term debt approximate fair value because of the short-term maturity of the instruments.

Derivatives

The Company measures the value of its natural gas hedge contracts, electricity contracts and foreign currency forward contracts using Level 2 inputs. The fair value of the Company’s natural gas hedges and electricity contracts is determined by a mark to market valuation based on forward curves using observable market prices and the fair value of its foreign currency forward contracts is determined using observable market transactions in over-the-counter markets.

Contingent consideration

In connection with our third quarter 2014 acquisition, we recorded contingent consideration pertaining to amounts payable to the former owners related to a put/call option that is to be determined based on a multiple of 2016 EBITDA that contains a cap of $7 million and a floor of $4 million. The valuation of contingent consideration uses assumptions we believe would be made by a market participant and has been based on a significant input not observable in the market. The significant unobservable input used in the fair value measurement of our contingent consideration includes our internal forecast of business performance, which is a Level 3 input. The fair value of the put/call as of March 31, 2015 is $6 million and has been recorded in Other liabilities on the Consolidated Balance Sheet. The change in fair value of $1 million for the three months ended March 31, 2015 was recognized in Interest expense, net on the Consolidated Statement of Earnings.

The following table summarizes the fair values and levels within the fair value hierarchy in which the fair value measurements fall as of March 31, 2015 (in millions):

	Total Measured at Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Derivative assets	$	18	$	—	$	18	$	—
Liabilities:
Derivative liabilities	$	7	$	—	$	7	$	—
Contingent consideration	6		—		—		6
Total liabilities	$	13	$	—	$	7	$	6

The following table summarizes the fair values and levels within the fair value hierarchy in which the fair value measurements fall as of December 31, 2014 (in millions):

	Total Measured at Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Derivative assets	$	1	$	—	$	1	$	—
Liabilities:
Derivative liabilities	$	8	$	—	$	8	$	—
Contingent consideration	5		—		—		5
Total liabilities	$	13	$	—	$	8	$	5

Items Disclosed at Fair Value

Long-term debt

The following table shows the fair value of the Company’s long-term debt as calculated based on quoted market prices for the same or similar issues (Level 2 input), or on the current rates offered to the Company for debt of the same remaining maturities:

	March 31, 2015		December 31, 2014
6.50% senior notes, net of discount, due 2016	108	%	109	%
9.00% senior notes, net of discount, due 2019	121	%	119	%
4.20% senior notes, net of discount, due 2022	105	%	101	%
4.20% senior notes, net of discount, due 2024	103	%	99	%
7.00% senior notes, net of discount, due 2036	124	%	124	%

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DERIVATIVE FINANCIAL INSTRUMENTS BALANCE SHEET (DETAIL) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Loss Recognized in OCI, Effective Portion	$ 7
Two Months
Derivatives, Fair Value [Line Items]
Percent of exposures hedged	0
Exposure Time	2 months
Four Months
Derivatives, Fair Value [Line Items]
Percent of exposures hedged	0
Exposure Time	4 months
Twelve Months [Domain]
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer	12 months
Beyond Twelve Months [Domain]
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer	12 months
Natural Gas Contract
Derivatives, Fair Value [Line Items]
Derivative, Remaining Maturity	15 months
Interest Rate Swap
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	5	0
Electricity and Foreign Exchange Contracts [Member] | Twelve Months [Domain]
Derivatives, Fair Value [Line Items]
Percent of exposures hedged	0
Electricity and Foreign Exchange Contracts [Member] | Beyond Twelve Months [Domain]
Derivatives, Fair Value [Line Items]
Percent of exposures hedged	0
Other Current Assets | Designated as Hedging Instrument | Net Investment Hedging [Member] | Foreign Exchange Contract
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	3	0
Other Current Assets | Nondesignated | Electricity and Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	1	1
Other Comprehensive Income | Designated as Hedging Instrument | Cash Flow Hedging | Natural Gas Contract
Derivatives, Fair Value [Line Items]
Loss Recognized in OCI, Effective Portion	7	8
Other Comprehensive Income | Designated as Hedging Instrument | Net Investment Hedging [Member] | Foreign Exchange Contract
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	12
Accounts Payable and Accrued Liabilities | Designated as Hedging Instrument | Cash Flow Hedging | Natural Gas Contract
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	6	9
Accounts Payable and Accrued Liabilities | Nondesignated | Foreign Exchange Contract
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	1	2
Other Noncurrent Assets | Designated as Hedging Instrument | Net Investment Hedging [Member] | Foreign Exchange Contract
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	9
Other Liabilities [Member] | Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	$ 0	$ (3)

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STOCK COMPENSATION (DETAIL) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Apr. 18, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant	1,800,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate	1.10%
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value		$ 36
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate			85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	29.20%
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Additional Disclosures Abstract
Number of shares granted	251,600
Number of shares forfeited	(15,850)
Share-based Goods and Nonemployee Services Transaction, Valuation Method, Expected Term	2 years 10 months 25 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted average fair value of grants	$ 44.98
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Roll Forward
Share-based compensation number of options beginning balance	2,754,895
Exercises in period number of options	(236,875)
Forfeitures in period number of options	(19,500)
Share-based compensation number of options ending balance	2,498,520
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning Balance	$ 31.04
Exercises in period weighted average exercise price	$ 29.34
Forfeitures n period weighted average exercise price	$ 37.84
Ending Balance	$ 31.15
Exercise Price Range One
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options	2,498,520
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term	4 years 8 months 17 days
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price, Beginning Balance	$ 31.15
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	2,011,245
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Remaining Contractual Term	4 years 0 months 5 days
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price	$ 29.40
Minimum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price	$ 13.89
Maximum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price	$ 42.16
Stock Plan Member, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant			1,500,000
EmployeeStock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant			2,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Terms of Award, Maximum (in years)		10 years
Allocated Share Based Compensation Expense	1	1
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized	7
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition	2 years 4 months 20 days
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value	31
Employee emergence equity program expense	0.5	0.4
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term	3 years 1 month 10 days
Allocated Share Based Compensation Expense	4	4
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized	39
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value	15	13
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Additional Disclosures Abstract
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance	1,727,741
Number of shares granted	552,753
Number of shares vested	(419,147)
Number of shares forfeited	(30,772)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance	1,830,575
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning Balance	$ 33.58
Weighted average fair value of grants	$ 39.37
Weighted average fair value of vested	$ 35.83
Weighted average fair value of forfeited	$ 37.49
Ending Balance	$ 34.89
Performance Stock Units (PSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Allocated Share Based Compensation Expense	2	2
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized	16
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition	2 years 2 months 13 days
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Additional Disclosures Abstract
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance	416,250
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance	652,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning Balance	$ 49.53
Weighted average fair value of forfeited	$ 50.16
Ending Balance	$ 47.76
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Allocated Share Based Compensation Expense	$ 1
Internal Based Performance Metric [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance Stock Payout Minimum	0
Performance Stock Payout Range Maximum	3
External Based Performance Metric [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance Stock Payout Minimum	0
Performance Stock Payout Range Maximum	2

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FAIR VALUE MEASUREMENT (TABLE)

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value of Long Term Debt [Table Text Block]

Long-term debt

The following table shows the fair value of the Company’s long-term debt as calculated based on quoted market prices for the same or similar issues (Level 2 input), or on the current rates offered to the Company for debt of the same remaining maturities:

	March 31, 2015		December 31, 2014
6.50% senior notes, net of discount, due 2016	108	%	109	%
9.00% senior notes, net of discount, due 2019	121	%	119	%
4.20% senior notes, net of discount, due 2022	105	%	101	%
4.20% senior notes, net of discount, due 2024	103	%	99	%
7.00% senior notes, net of discount, due 2036	124	%	124	%

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table summarizes the fair values and levels within the fair value hierarchy in which the fair value measurements fall as of March 31, 2015 (in millions):

	Total Measured at Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Derivative assets	$	18	$	—	$	18	$	—
Liabilities:
Derivative liabilities	$	7	$	—	$	7	$	—
Contingent consideration	6		—		—		6
Total liabilities	$	13	$	—	$	7	$	6

The following table summarizes the fair values and levels within the fair value hierarchy in which the fair value measurements fall as of December 31, 2014 (in millions):

	Total Measured at Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Derivative assets	$	1	$	—	$	1	$	—
Liabilities:
Derivative liabilities	$	8	$	—	$	8	$	—
Contingent consideration	5		—		—		5
Total liabilities	$	13	$	—	$	8	$	5

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DEBT (TABLE)

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

Details of the Company’s outstanding long-term debt are as follows (in millions):

	March 31, 2015		December 31, 2014
6.50% senior notes, net of discount, due 2016	$	158	$	158
9.00% senior notes, net of discount, due 2019	143		143
4.20% senior notes, net of discount, due 2022	600		600
4.20% senior notes, net of discount, due 2024	393		392
7.00% senior notes, net of discount, due 2036	540		540
Accounts receivable securitization facility, maturing in 2018	237		106
Senior revolving credit facility, maturing in 2018	151		—
Various capital leases, due through and beyond 2050	46		47
Fair value adjustment to debt	9		8
Total long-term debt	2,277		1,994
Less – current portion	3		3
Long-term debt, net of current portion	$	2,274	$	1,991

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PENSION AND OTHER POSTRETIREMENT BENEFITS (TABLE)

3 Months Ended

Mar. 31, 2015

Pension Plan, Defined Benefit

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Benefit Costs

The following tables provide information regarding pension expense recognized (in millions):

	Three Months Ended March 31, 2015									Three Months Ended March 31, 2014
	U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
Components of Net Periodic Pension Cost
Service cost	$	2		$	1		$	3		$	2		$	1		$	3
Interest cost	11			5			16			12			6			18
Expected return on plan assets	(15		)	(6		)	(21		)	(14		)	(7		)	(21		)
Amortization of actuarial loss	4			1			5			2			1			3
Net periodic pension cost	$	2		$	1		$	3		$	2		$	1		$	3

Other Postretirement Benefits Other Than Pensions

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Benefit Costs

The following table provides the components of net periodic benefit cost for aggregated United States and non-United States Plans for the periods indicated (in millions):

	Three Months Ended   March 31,
	2015			2014
Components of Net Periodic Benefit Cost
Service cost	$	1		$	1
Interest cost	2			3
Amortization of prior service cost	(1		)	(1		)
Amortization of actuarial gain	—			(1		)
Net periodic benefit cost	$	2		$	2

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PROPERTY, PLANT AND EQUIPMENT

3 Months Ended

Mar. 31, 2015

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPTMENT

PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consist of the following (in millions):

	March 31, 2015			December 31, 2014
Land	$	191		$	196
Buildings and leasehold improvements	785			789
Machinery and equipment	3,389			3,405
Construction in progress	238			233
	4,603			4,623
Accumulated depreciation	(1,752		)	(1,724		)
Property, plant and equipment, net	$	2,851		$	2,899

Machinery and equipment includes certain precious metals used in our production tooling, which comprise approximately 16% and 15% of total machinery and equipment as of March 31, 2015, and December 31, 2014, respectively. Precious metals used in our production tooling are depleted as they are consumed during the production process, which typically represents an annual expense of less than 3% of the outstanding carrying value.

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CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (DETAIL) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
NET CASH FLOW USED FOR OPERATING ACTIVITIES
NET CASH FLOW USED FOR OPERATING ACTIVITIES	$ (149)	$ (272)
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	(56)	(51)
Proceeds from the sale of assets (including alloy) or affiliates	0	(3)
Net cash flow used for investing activities	(56)	(54)
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	529	484
Payments on senior revolving credit and receivables securitization facilities	(247)	(149)
Net increase (decrease) in short-term debt	(17)	24
Cash dividends paid	(39)	0
Purchases of treasury stock	(19)	(29)
Other intercompany loans	0	0
Other	7	5
Net cash flow provided by financing activities	214	335
Effect of exchange rate changes on cash	1	(1)
Net increase in cash and cash equivalents	10	8
Cash and cash equivalents at beginning of period	67	57
Cash and cash equivalents at end of period	77	65
Parent Company
NET CASH FLOW USED FOR OPERATING ACTIVITIES
NET CASH FLOW USED FOR OPERATING ACTIVITIES	0	0
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	(3)	(3)
Proceeds from the sale of assets (including alloy) or affiliates	0	0
Net cash flow used for investing activities	(3)	(3)
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	398	433
Payments on senior revolving credit and receivables securitization facilities	(247)	(149)
Net increase (decrease) in short-term debt	0	0
Cash dividends paid	(39)	0
Purchases of treasury stock	(19)	(29)
Other intercompany loans	(97)	(257)
Other	7	5
Net cash flow provided by financing activities	3	3
Effect of exchange rate changes on cash	0	0
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Guarantor Subsidiaries
NET CASH FLOW USED FOR OPERATING ACTIVITIES
NET CASH FLOW USED FOR OPERATING ACTIVITIES	(157)	(222)
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	(43)	(26)
Proceeds from the sale of assets (including alloy) or affiliates	0	0
Net cash flow used for investing activities	(43)	(26)
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	0	0
Payments on senior revolving credit and receivables securitization facilities	0	0
Net increase (decrease) in short-term debt	(25)	1
Cash dividends paid	0	0
Purchases of treasury stock	0	0
Other intercompany loans	228	247
Other	0	0
Net cash flow provided by financing activities	203	248
Effect of exchange rate changes on cash	0	0
Net increase in cash and cash equivalents	3	0
Cash and cash equivalents at beginning of period	1	3
Cash and cash equivalents at end of period	4	3
Non Guarantor Subsidiaries
NET CASH FLOW USED FOR OPERATING ACTIVITIES
NET CASH FLOW USED FOR OPERATING ACTIVITIES	8	(50)
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	(10)	(22)
Proceeds from the sale of assets (including alloy) or affiliates	0	(3)
Net cash flow used for investing activities	(10)	(25)
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	131	51
Payments on senior revolving credit and receivables securitization facilities	0	0
Net increase (decrease) in short-term debt	8	23
Cash dividends paid	0	0
Purchases of treasury stock	0	0
Other intercompany loans	(131)	10
Other	0	0
Net cash flow provided by financing activities	8	84
Effect of exchange rate changes on cash	1	(1)
Net increase in cash and cash equivalents	7	8
Cash and cash equivalents at beginning of period	66	54
Cash and cash equivalents at end of period	73	62
Consolidation Eliminations
NET CASH FLOW USED FOR OPERATING ACTIVITIES
NET CASH FLOW USED FOR OPERATING ACTIVITIES	0	0
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	0	0
Proceeds from the sale of assets (including alloy) or affiliates	0	0
Net cash flow used for investing activities	0	0
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	0	0
Payments on senior revolving credit and receivables securitization facilities	0	0
Net increase (decrease) in short-term debt	0	0
Cash dividends paid	0	0
Purchases of treasury stock	0	0
Other intercompany loans	0	0
Other	0	0
Net cash flow provided by financing activities	0	0
Effect of exchange rate changes on cash	0	0
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	$ 0	$ 0

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DERIVATIVE FINANCIAL INSTRUMENTS (TABLE)

3 Months Ended

Mar. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Assets and Liabilities at Fair Value

The following table presents the fair value of derivatives and hedging instruments and the respective location on the Consolidated Balance Sheets (in millions):

		Fair Value at
	Location	March 31, 2015		December 31, 2014
Derivative assets designated as hedging instruments:
Net investment hedges:
Cross currency swaps	Other current assets	$	3	$	—
Cross currency swaps	Other non current assets	$	9	$	—
Amount of gain recognized in OCI (effective portion)	OCI	$	12	$	—
Fair value hedges:
Interest rate swaps	Other non current assets	$	5	$	—
Derivative liabilities designated as hedging instruments:
Cash flow hedges:
Natural gas and electricity, and foreign exchange contracts	Accounts payable and accrued liabilities	$	6	$	9
Amount of loss recognized in OCI (effective portion)	OCI	$	7	$	8
Fair value hedges:
Interest rate swaps	Other Liabilities	$	—	$	(3	)
Derivative assets not designated as hedging instruments:
Foreign exchange contracts	Other current assets	$	1	$	1
Derivative liabilities not designated as hedging instruments:
Foreign exchange contracts	Accounts payable and accrued liabilities	$	1	$	2

Schedule of Fair Value Derivative Instruments Statements of Earnings Location

The following table presents the impact and respective location of derivative activities on the Consolidated Statements of Earnings (in millions):

		Three Months Ended   March 31,
	Location	2015		2014
Derivative activity designated as hedging instruments:
Natural gas and electricity:
Amount of loss reclassified from OCI into earnings (effective portion)	Cost of sales	$	3	$	(1	)
Derivative activity not designated as hedging instruments:
Foreign currency exchange contract:
Amount of loss recognized in earnings (a)	Other expenses (income), net	$	1	$	(1	)

(a) Losses related to foreign currency derivatives were substantially offset by net revaluation impacts on foreign denominated balance sheet exposures, which were also recorded in other expenses (income), net.

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SEGMENT INFORMATION (DETAIL) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 segment	Mar. 31, 2014
Segment Reporting, Significant Reconciling Item [Line Items]
NET SALES	$ 1,207	$ 1,278
Income (loss) from Reportable Segments	87	108
Restructuring Charges and Related Items	0	(12)
Net loss related to Hurricane Sandy	0	(2)
General corporate expense and other	(27)	(31)
EBIT	58	108
Charges related to cost reduction actions	0	12
Other costs related to restructuring	(2)
Number of Reportable Segments	3
United States
Segment Reporting, Significant Reconciling Item [Line Items]
Revenues	816	889
Europe
Segment Reporting, Significant Reconciling Item [Line Items]
Revenues	129	149
Asia Pacific
Segment Reporting, Significant Reconciling Item [Line Items]
Revenues	140	137
Other Geographical
Segment Reporting, Significant Reconciling Item [Line Items]
Revenues	122	103
Composites
Segment Reporting, Significant Reconciling Item [Line Items]
Revenues	478	477
EBIT	60	27
Total Segments
Segment Reporting, Significant Reconciling Item [Line Items]
Revenues	1,250	1,329
Corporate Eliminations
Segment Reporting, Significant Reconciling Item [Line Items]
Revenues	(43)	(51)
Insulation
Segment Reporting, Significant Reconciling Item [Line Items]
Revenues	379	355
EBIT	7	1
Roofing
Segment Reporting, Significant Reconciling Item [Line Items]
Revenues	393	497
EBIT	20	80
Hangzhou
Segment Reporting, Significant Reconciling Item [Line Items]
Restructuring Charges and Related Items	$ 0	$ 45

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WARRANTIES

3 Months Ended

Mar. 31, 2015

Product Warranties Disclosures [Abstract]

WARRANTIES

WARRANTIES

The Company records a liability for warranty obligations at the date the related products are sold. Adjustments are made as new information becomes available. A reconciliation of the warranty liability is as follows (in millions):

	Three Months Ended March 31, 2015
Beginning balance	$	40
Amounts accrued for current year	5
Settlements of warranty claims	(3		)
Ending balance	$	42

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GOODWILL AND OTHER INTANGIBLE ASSETS

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND OTHER INTANGIBLE ASSETS

GOODWILL AND OTHER INTANGIBLE ASSETS

Intangible assets and goodwill consist of the following (in millions):

March 31, 2015	Weighted Average Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortizable intangible assets:
Customer relationships	19	$	172	$	(75	)	$	97
Technology	20	193		(85		)	108
Franchise and other agreements	11	41		(19		)	22
Indefinite-lived intangible assets:
Trademarks		786		—			786
Total intangible assets		$	1,192	$	(179	)	$	1,013
Goodwill		$	1,168

December 31, 2014	Weighted Average Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortizable intangible assets:
Customer relationships	19	$	172	$	(72	)	$	100
Technology	20	193		(83		)	110
Franchise and other agreements	12	39		(18		)	21
Indefinite-lived intangible assets:
Trademarks		786		—			786
Total intangible assets		$	1,190	$	(173	)	$	1,017
Goodwill		$	1,168

The changes in the gross carrying amount of amortizable intangible assets by asset group are as follows (in millions):

	Customer relationships		Technology		Franchise and other agreements		Trademarks		Total
Balance at December 31, 2014	$	172	$	193	$	39	$	786	$	1,190
Additional Franchises and Agreements	—		—		2		—		2
Balance at March 31, 2015	$	172	$	193	$	41	$	786	$	1,192

Other Intangible Assets

The Company expects the ongoing amortization expense for amortizable intangible assets to be approximately $22 million in each of the next five fiscal years. The Company’s future cash flows are not materially impacted by its ability to extend or renew agreements related to our amortizable intangible assets.

Goodwill

The Company tests goodwill and indefinite-lived intangible assets for impairment during the fourth quarter of each year, or more frequently should circumstances change or events occur that would more likely than not reduce the fair value of a reporting unit below its carrying amount. No testing was deemed necessary in the first quarter of 2015.

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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Cash Flows [Abstract]
Net Income (Loss) Attributable to Parent	$ 18	$ 120
NET CASH FLOW USED FOR OPERATING ACTIVITIES
NET EARNINGS	19	120
Adjustments to reconcile net earnings to cash used for operating activities:
Depreciation and amortization	75	76
Gain on sale of fixed assets	0	(45)
Deferred income taxes	4	(45)
Provision for pension and other employee benefits liabilities	5	5
Stock-based compensation expense	8	8
Other non-cash	0	(1)
Change in working capital	(244)	(377)
Pension fund contribution	(14)	(14)
Payments for other employee benefits liabilities	(5)	(6)
Other	4	7
Net cash flow used for operating activities	(149)	(272)
NET CASH FLOW USED FOR INVESTING ACTIVITIES
Additions to plant and equipment (including alloy)	(56)	(51)
Proceeds from the sale of assets (including alloy) or affiliates	0	(3)
Net cash flow used for investing activities	(56)	(54)
NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES
Proceeds from senior revolving credit and receivables securitization facilities	529	484
Payments on senior revolving credit and receivables securitization facilities	(247)	(149)
Net increase (decrease) in short-term debt	(17)	24
Cash dividends paid	(39)	0
Purchases of treasury stock	(19)	(29)
Other	7	5
Net cash flow provided by financing activities	214	335
Effect of exchange rate changes on cash	1	(1)
Net increase in cash and cash equivalents	10	8
Cash and cash equivalents at beginning of period	67	57
Cash and cash equivalents at end of period	$ 77	$ 65

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PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (DETAIL) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 3	$ 3
Interest cost	16	18
Expected return on plan assets	(21)	(21)
Amortization of actuarial loss	5	3
Net periodic pension cost	3	3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Contributions by Employer	14
United States Pension Plans Of US Entity Defined Benefit
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	2	2
Interest cost	11	12
Expected return on plan assets	(15)	(14)
Amortization of actuarial loss	4	2
Net periodic pension cost	2	2
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	48
Foreign Pension Plans Defined Benefit
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	1	1
Interest cost	5	6
Expected return on plan assets	(6)	(7)
Amortization of actuarial loss	1	1
Net periodic pension cost	1	1
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	14
Other Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	1	1
Interest cost	2	3
Amortization of actuarial loss	0	(1)
Amortization of prior service cost	(1)	(1)
Net periodic pension cost	$ 2	$ 2

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PROPERTY, PLANT AND EQUIPMENT (DETAIL) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Line Items]
Property Plant And Equipment Gross	$ 4,603	$ 4,623
Accumulated depreciation	(1,752)	(1,724)
Property, plant and equipment, net	2,851	2,899
Precious Metals Percentage	0.16	0.15
Precious Metals Depletion Percentage	0.00%
precious metal percent of deprecation expense	0.03
Land
Property Plant And Equipment [Line Items]
Property Plant And Equipment Gross	191	196
Buildings and Leasehold Improvements
Property Plant And Equipment [Line Items]
Property Plant And Equipment Gross	785	789
Machinery And Equipment
Property Plant And Equipment [Line Items]
Property Plant And Equipment Gross	3,389	3,405
Construction In Progress
Property Plant And Equipment [Line Items]
Property Plant And Equipment Gross	$ 238	$ 233

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WARRANTIES (TABLE)

3 Months Ended

Mar. 31, 2015

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability

WARRANTIES

The Company records a liability for warranty obligations at the date the related products are sold. Adjustments are made as new information becomes available. A reconciliation of the warranty liability is as follows (in millions):

	Three Months Ended March 31, 2015
Beginning balance	$	40
Amounts accrued for current year	5
Settlements of warranty claims	(3		)
Ending balance	$	42

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CONDENSED CONSOLIDATED STATEMENT OF EARNINGS (DETAIL) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Condensed Financial Statements Captions [Line Items]
NET SALES	$ 1,207	$ 1,278
COST OF SALES	998	1,044
Gross margin	209	234
OPERATING EXPENSES
Marketing and administrative expenses	129	132
Science and technology expenses	17	19
Charges related to cost reduction actions	0	12
Other (income) expenses, net	5	(37)
Total operating expenses	151	126
EARNINGS BEFORE INTEREST AND TAXES	58	108
Interest expense, net	26	27
EARNINGS BEFORE TAXES	32	81
Less: Income tax expense (benefit)	13	(39)
Equity in net earnings of subsidiaries	0	0
NET EARNINGS	19	120
Less: Net earnings attributable to noncontrolling interests	1	0
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	18	120
Parent Company
Condensed Financial Statements Captions [Line Items]
NET SALES	0	0
COST OF SALES	0	0
Gross margin	0	0
OPERATING EXPENSES
Marketing and administrative expenses	32	32
Science and technology expenses	0	0
Charges related to cost reduction actions	0	0
Other (income) expenses, net	(8)	(10)
Total operating expenses	24	22
EARNINGS BEFORE INTEREST AND TAXES	(24)	(22)
Interest expense, net	24	26
EARNINGS BEFORE TAXES	(48)	(48)
Less: Income tax expense (benefit)	(15)	(18)
Equity in net earnings of subsidiaries	51	150
NET EARNINGS	18	120
Less: Net earnings attributable to noncontrolling interests	0	0
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	18	120
Guarantor Subsidiaries
Condensed Financial Statements Captions [Line Items]
NET SALES	841	911
COST OF SALES	721	751
Gross margin	120	160
OPERATING EXPENSES
Marketing and administrative expenses	68	66
Science and technology expenses	14	15
Charges related to cost reduction actions	0	1
Other (income) expenses, net	6	2
Total operating expenses	88	84
EARNINGS BEFORE INTEREST AND TAXES	32	76
Interest expense, net	1	1
EARNINGS BEFORE TAXES	31	75
Less: Income tax expense (benefit)	9	(13)
Equity in net earnings of subsidiaries	29	62
NET EARNINGS	51	150
Less: Net earnings attributable to noncontrolling interests	0	0
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	51	150
Non Guarantor Subsidiaries
Condensed Financial Statements Captions [Line Items]
NET SALES	461	456
COST OF SALES	372	382
Gross margin	89	74
OPERATING EXPENSES
Marketing and administrative expenses	29	34
Science and technology expenses	3	4
Charges related to cost reduction actions	0	11
Other (income) expenses, net	7	(29)
Total operating expenses	39	20
EARNINGS BEFORE INTEREST AND TAXES	50	54
Interest expense, net	1	0
EARNINGS BEFORE TAXES	49	54
Less: Income tax expense (benefit)	19	(8)
Equity in net earnings of subsidiaries	0	0
NET EARNINGS	30	62
Less: Net earnings attributable to noncontrolling interests	1	0
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	29	62
Consolidation Eliminations
Condensed Financial Statements Captions [Line Items]
NET SALES	(95)	(89)
COST OF SALES	(95)	(89)
Gross margin	0	0
OPERATING EXPENSES
Marketing and administrative expenses	0	0
Science and technology expenses	0	0
Charges related to cost reduction actions	0	0
Other (income) expenses, net	0	0
Total operating expenses	0	0
EARNINGS BEFORE INTEREST AND TAXES	0	0
Interest expense, net	0	0
EARNINGS BEFORE TAXES	0	0
Less: Income tax expense (benefit)	0	0
Equity in net earnings of subsidiaries	(80)	(212)
NET EARNINGS	(80)	(212)
Less: Net earnings attributable to noncontrolling interests	0	0
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	$ (80)	$ (212)

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PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

3 Months Ended

Mar. 31, 2015

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

Pension Plans

The Company sponsors defined benefit pension plans. Under the plans, pension benefits are based on an employee’s years of service and, for certain categories of employees, qualifying compensation. Company contributions to these pension plans are determined by an independent actuary to meet or exceed minimum funding requirements. In our Non-U.S. plans, the unrecognized cost of any retroactive amendments and actuarial gains and losses are amortized over the average future service period of plan participants expected to receive benefits. In our U.S. plans, the unrecognized cost of any retroactive amendments and actuarial gains and losses are amortized over the average remaining life expectancy of the inactive participants as substantially all of the plan participants are inactive.

The following tables provide information regarding pension expense recognized (in millions):

	Three Months Ended March 31, 2015									Three Months Ended March 31, 2014
	U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
Components of Net Periodic Pension Cost
Service cost	$	2		$	1		$	3		$	2		$	1		$	3
Interest cost	11			5			16			12			6			18
Expected return on plan assets	(15		)	(6		)	(21		)	(14		)	(7		)	(21		)
Amortization of actuarial loss	4			1			5			2			1			3
Net periodic pension cost	$	2		$	1		$	3		$	2		$	1		$	3

The Company expects to contribute approximately $48 million in cash to the United States Pension Plans and another $14 million to non-United States plans during 2015. The Company made cash contributions of approximately $14 million to the plans during the three months ended March 31, 2015.

Postemployment and Postretirement Benefits Other than Pension Plans

The Company maintains healthcare and life insurance benefit plans for certain retired employees and their dependents. The health care plans in the United States are non-funded and pay either (1) stated percentages of covered medically necessary expenses, after subtracting payments by Medicare or other providers and after stated deductibles have been met, or (2) fixed amounts of medical expense reimbursement.

The following table provides the components of net periodic benefit cost for aggregated United States and non-United States Plans for the periods indicated (in millions):

	Three Months Ended   March 31,
	2015			2014
Components of Net Periodic Benefit Cost
Service cost	$	1		$	1
Interest cost	2			3
Amortization of prior service cost	(1		)	(1		)
Amortization of actuarial gain	—			(1		)
Net periodic benefit cost	$	2		$	2

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ASSETS HELD FOR SALE

3 Months Ended

Mar. 31, 2015

Discontinued Operations and Disposal Groups [Abstract]

ASSETS HELD FOR SALE

ASSETS HELD FOR SALE

Assets held for sale consists of Property, plant and equipment related to two closed facilities in Alcala, Spain and Vado, Italy.

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EARNINGS PER SHARE

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

EARNINGS PER SHARE

EARNINGS PER SHARE

The following table summarizes the number of shares outstanding as well as our basic and diluted earnings per-share (in millions, except per share amounts):

	Three Months Ended   March 31,
	2015		2014
Net earnings attributable to Owens Corning	$	18	$	120
Weighted-average number of shares outstanding used for basic earnings per share	117.8		117.8
Non-vested restricted and performance shares	0.3		0.4
Options to purchase common stock	0.4		0.5
Weighted-average number of shares outstanding and common equivalent shares used for diluted earnings per share	118.5		118.7
Earnings per common share attributable to Owens Corning common stockholders:
Basic	$	0.15	$	1.02
Diluted	$	0.15	$	1.01

Basic earnings per share is calculated by dividing earnings attributable to Owens Corning by the weighted-average number of shares of the Company’s common stock outstanding during the period. Outstanding shares consist of issued shares less treasury stock.

In 2012, the Company approved a new share buy-back program under which the Company is authorized to repurchase up to 10 million shares of the Company’s outstanding common stock (the “Repurchase Program”). The Repurchase Program authorizes the Company to repurchase shares through the open market, in privately negotiated or other transactions. The actual number of shares repurchased will depend on timing, market conditions and other factors and will be at the Company’s discretion. The Company repurchased 0.3 million shares of its common stock for $13 million during the three months ended March 31, 2015 under the Repurchase Program. As of March 31, 2015, 7.4 million shares remain available for repurchase under the Repurchase Program.

For the three months ended March 31, 2015, the number of shares used in the calculation of diluted earnings per share did not include 0.1 million non-vested Restricted and Performance shares and 0.6 million of options to purchase common stock, due to their anti-dilutive effect.

For the three months ended March 31, 2014, the number of shares used in the calculation of diluted earnings per share did not include 0.5 million non-vested Restricted and Performance shares and 0.7 million of options to purchase common stock, due to their anti-dilutive effect.

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CONTINGENT LIABILITIES AND OTHER MATTERS

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

CONTINGENT LIABILITIES AND OTHER MATTERS

CONTINGENT LIABILITIES AND OTHER MATTERS

The Company is involved in various legal proceedings relating to employment, product liability and other matters (collectively, “Proceedings”). The Company regularly reviews the status of such Proceedings with legal counsel. Liabilities for such Proceedings are recorded when it is probable that the liability has been incurred and when the amount of the liability can be reasonably estimated. Liabilities are adjusted when additional information becomes available. Management believes that the amount of any reasonably possible losses in excess of any amounts accrued, if any, with respect to such Proceedings or any other known claims, including the matters described below under the caption Environmental Matters (the “Environmental Matters”) will not be material to the Company’s financial statements. Management believes that the ultimate disposition of the Proceedings and the Environmental Matters will not have a material adverse effect on the Company’s operations or financial condition taken as a whole.

Litigation

The Company is involved in litigation from time to time in the regular course of its business. The Company believes that adequate provisions for resolution of all contingencies, claims and pending litigation have been made for probable losses that are reasonably estimable. The Company does not believe that the ultimate outcome of these actions will have a material adverse effect on its financial condition, results of operations or cash flows.

Environmental Matters

The Company has been deemed by the United States Environmental Protection Agency to be a Potentially Responsible Party (“PRP”) with respect to certain sites under the Comprehensive Environmental Response Compensation and Liability Act. The Company has also been deemed a PRP under similar state or local laws and in other instances other PRPs have brought suits against it as a PRP for contribution under such federal, state, or local laws. At March 31, 2015, the Company had environmental remediation liabilities as a PRP at 21 sites where it has a continuing legal obligation to either complete remedial actions or contribute to the completion of remedial actions as part of a group of PRPs. Environmental liability estimates may be affected by changing determinations of what constitutes an environmental exposure or an acceptable level of cleanup. To the extent that the required remediation procedures or timing of those procedures change, additional contamination is identified, or the financial condition of other PRPs is adversely affected, the estimate of our environmental liabilities may change. For these sites the Company estimates a reserve to reflect environmental liabilities that have been asserted or are probable of assertion, in which liabilities are probable and reasonably estimable. At March 31, 2015, our reserve for such liabilities was $3 million. Changes in required remediation procedures or timing of those procedures at existing legacy sites, or discovery of contamination at additional sites, could result in increases to our environmental obligations.

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Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 15, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	Owens Corning
Entity Central Index Key	0001370946
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Entity Well Known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Amendment Flag	false
Entity Common Stock Shares Outstanding		117,995,865

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STOCK COMPENSATION

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

STOCK COMPENSATION

STOCK COMPENSATION

Stock Plans

On April 18, 2013, the Company’s stockholders approved the Owens Corning 2013 Stock Plan (the “2013 Stock Plan”) which replaced the 2010 Stock Plan. The 2013 Stock Plan authorizes grants of stock options, stock appreciation rights, restricted stock awards, restricted stock units, bonus stock awards and performance stock awards. Under the 2013 Stock Plan, 1.5 million shares of common stock may be granted in addition to the shares of Company common stock that rolled over from the 2010 Stock Plan. Such shares of common stock include shares that were available but not granted, or which were granted but were not issued or delivered due to expiration, termination, cancellation or forfeiture of such awards. There will be no future grants made under the 2010 Stock Plan. At March 31, 2015, the number of shares remaining available under the 2013 Stock Plan for all stock awards was 1.8 million.

Stock Options

The Company did not grant any stock options during the quarter ended March 31, 2015. The Company calculates a weighted-average grant-date fair value using a Black-Scholes valuation model for options granted. Compensation expense for options is measured based on the fair market value of the option on the date of grant, and is recognized on a straight-line basis over a four year vesting period. In general, the exercise price of each option awarded was equal to the market price of the Company’s common stock on the date of grant and an option’s maximum term is 10 years.

During the three months ended March 31, 2015 and 2014, the Company recognized expense of $1 million related to the Company’s stock options, respectively. As of March 31, 2015, there was $7 million of total unrecognized compensation cost related to stock options. That cost is expected to be recognized over a weighted-average period of 2.39 years. The total aggregate intrinsic value of options outstanding as of March 31, 2015 and 2014 was $31 million and $36 million, respectively.

The following table summarizes the Company’s stock option activity for the three months ended March 31, 2015:

	Three Months Ended March 31, 2015
	Number of Options		Weighted- Average Exercise Price
Beginning Balance	2,754,895		$	31.04
Exercised	(236,875	)	29.34
Forfeited	(19,500	)	37.84
Ending Balance	2,498,520		$	31.15

The following table summarizes information about the Company’s options outstanding and exercisable:

	Options Outstanding				Options Exercisable
	Options Outstanding	Weighted-Average			Number Exercisable at March 31, 2015	Weighted-Average
Range of Exercise Prices		Remaining Contractual Life	Exercise Price			Remaining Contractual Life	Exercise Price
$13.89-$42.16	2,498,520	4.71	$	31.15	2,011,245	4.01	$	29.40

Restricted Stock Awards and Restricted Stock Units

The Company has granted restricted stock awards and restricted stock units (collectively referred to as “restricted stock”) as a part of its long-term incentive plan. Compensation expense for restricted stock is measured based on the market price of the stock at date of grant and is recognized on a straight-line basis over the four-year vesting period. Stock restrictions are subject to alternate vesting plans for death, disability, approved early retirement and involuntary termination, over various periods ending in 2019.

During the three months ended March 31, 2015 and 2014 the Company recognized expense of $4 million, respectively, related to the Company’s restricted stock. As of March 31, 2015, there was $39 million of total unrecognized compensation cost related to restricted stock. That cost is expected to be recognized over a weighted-average period of 3.11 years. The total fair value of shares vested during the three months ended March 31, 2015 and 2014 was $15 million and $13 million, respectively.

A summary of the status of the Company’s plans that had restricted stock issued as of March 31, 2015, and changes during the three months ended March 31, 2015, are presented below:

	Three Months Ended March 31, 2015
	Number of Shares		Weighted-Average Grant-Date Fair Value
Beginning Balance	1,727,741		$	33.58
Granted	552,753		39.37
Vested	(419,147	)	35.83
Forfeited	(30,772	)	37.49
Ending Balance	1,830,575		$	34.89

Performance Stock Awards and Performance Stock Units

The Company has granted performance stock awards and performance stock units (collectively referred to as “PSUs”) as a part of its long-term incentive plan. All outstanding performance grants will fully settle in stock. The amount of stock ultimately distributed from the 2015 grants is contingent on meeting internal company-based metrics or an external-based stock performance metric. The amount of stock ultimately distributed from 2014 and prior grants is contingent on meeting an external based stock performance metric.

In the first three months of 2015, the Company granted both internal company-based and external-based metric PSUs.

Internal based metrics

The internal company-based metrics vests after a three-year period and are based on return on invested capital over a three-year period. The amount of stock distributed will vary from 0% to 300% of PSUs awarded depending on performance versus the company-based performance metrics.

The initial fair value for all internal company-based metric PSUs assumes that the performance goals will be achieved and is based on the grant date stock price. This assumption is monitored quarterly and if it becomes probable that such goals will not be achieved or will be exceeded, compensation expense recognized will be adjusted and previous surplus compensation expense recognized will be reversed or additional expense will be recognized.

External based metrics

The external-based metric vests after a three-year period. Outstanding grants issued in 2015 forward will be based on the Company's total stockholder return relative to the performance of the S&P Building & Construction Industry Index and outstanding grants issued prior to 2015 are based on the Company's total stockholder return relative to the performance of the companies in the S&P 500 Index. The amount of stock distributed will vary from 0% to 200% of PSUs awarded depending on the relative stockholder return performance.

The Company estimated the fair value of the external-based metric performance stock grants using a Monte Carlo simulation that uses various assumptions that include expected volatility of 29.2%, and a risk free interest rate of 1.1% both of which were based on an expected term of 2.90 years. Expected volatility was based on a benchmark study of our peers. The risk-free interest rate was based on zero coupon United States Treasury bills at the time of grant. The expected term represents the period from the grant date to the end of the three-year performance period. Compensation expense for external based metric PSUs is measured based on the grant date fair value and is recognized on a straight-line basis over the vesting period. Vesting will be accelerated in the case of death or disability, and awards earned will be paid at the end of the three-year period.

During the three months ended March 31, 2015, and 2014 the Company recognized expense of $2 million related to the Company’s PSUs, respectively. As of March 31, 2015, there was $16 million of total unrecognized compensation cost related to PSUs. That cost is expected to be recognized over a weighted-average period of 2.20 years.

A summary of the status of the Company’s plans that had PSUs issued as of March 31, 2015, and changes during the three months ended March 31, 2015, is presented below:

	Three Months Ended March 31, 2015
	Number of PSUs		Weighted-Average Grant-Date Fair Value
Beginning Balance	416,250		$	49.53
Granted	251,600		44.98
Forfeited	(15,850	)	50.16
Ending Balance	652,000		$	47.76

Employee Stock Purchase Plan

On April 18, 2013, the Company’s stockholders approved the Owens Corning Employee Stock Purchase Plan (“ESPP”). The ESPP is a tax-qualified plan under Section 423 of the Internal Revenue Code. The purchase price of shares purchased under the ESPP is equal to 85% of the lower of the fair market value of shares of Owens Corning common stock at the beginning or ending of the offering period, which is a six-month period ending on May 31 and November 30 of each year. There are 2 million shares available for purchase under the ESPP as of its approval date. During the three months ended March 31, 2015 and 2014, the Company had expense of $0.5 million and $0.4 million. respectively. As of March 31, 2015, there was $1 million of total unrecognized compensation cost related to the ESPP.

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CONDENSED CONSOLIDATED BALANCE SHEET (DETAIL) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014		Mar. 31, 2014	Dec. 31, 2013
CURRENT ASSETS
Cash and cash equivalents	$ 77		$ 67		$ 65	$ 57
Receivables, less allowances	844		674
Due from affiliates	0		0
Inventories	825		817
Assets held for sale	14		16
Other current assets	235		233
Total current assets	1,995		1,807
Investment in subsidiaries	0		0
Due from affiliates	0		0
Property, plant and equipment, net	2,851		2,899
Goodwill	1,168		1,168
Intangible assets	1,013		1,017
Deferred income taxes	434		444
Other non-current assets	235		220
TOTAL ASSETS	7,696		7,555
CURRENT LIABILITIES
Accounts payable and accrued liabilities	895		949
Due to affiliates	0		0
Short-term debt	14		31
Long-term debt – current portion	3		3
Total current liabilities	912		983
Long-term debt, net of current portion	2,274		1,991
Due to affiliates	0		0
Pension plan liability	424		447
Other employee benefits liability	249		252
Deferred income taxes	22		22
Other liabilities	132		130
OWENS CORNING STOCKHOLDERS' EQUITY
Preferred stock	0	[1]	0	[1]
Common stock	1	[2]	1	[2]
Additional paid in capital	3,946		3,954
Accumulated earnings	803		805
Accumulated other comprehensive deficit	(591)		(550)		(310)	(297)
Cost of common stock in treasury	(515)	[3]	(518)	[3]
Total Owens Corning stockholders’ equity	3,644		3,692
Noncontrolling interests	39		38
Total equity	3,683		3,730
TOTAL LIABILITIES AND EQUITY	7,696		7,555
Parent Company
CURRENT ASSETS
Cash and cash equivalents	0		0		0	0
Receivables, less allowances	0		0
Due from affiliates	0		0
Inventories	0		0
Assets held for sale	0		0
Other current assets	8		7
Total current assets	8		7
Investment in subsidiaries	7,502		7,504
Due from affiliates	0		0
Property, plant and equipment, net	359		359
Goodwill	0		0
Intangible assets	0		0
Deferred income taxes	31		35
Other non-current assets	42		30
TOTAL ASSETS	7,942		7,935
CURRENT LIABILITIES
Accounts payable and accrued liabilities	57		47
Due to affiliates	1,816		1,913
Short-term debt	0		0
Long-term debt – current portion	0		0
Total current liabilities	1,873		1,960
Long-term debt, net of current portion	2,004		1,851
Due to affiliates	0		0
Pension plan liability	302		310
Other employee benefits liability	0		0
Deferred income taxes	0		0
Other liabilities	119		122
OWENS CORNING STOCKHOLDERS' EQUITY
Preferred stock	0		0
Common stock	1		1
Additional paid in capital	3,946		3,954
Accumulated earnings	803		805
Accumulated other comprehensive deficit	(591)		(550)
Cost of common stock in treasury	(515)		(518)
Total Owens Corning stockholders’ equity	3,644		3,692
Noncontrolling interests	0		0
Total equity	3,644		3,692
TOTAL LIABILITIES AND EQUITY	7,942		7,935
Guarantor Subsidiaries
CURRENT ASSETS
Cash and cash equivalents	4		1		3	3
Receivables, less allowances	0		0
Due from affiliates	2,666		2,858
Inventories	540		527
Assets held for sale	0		0
Other current assets	138		132
Total current assets	3,348		3,518
Investment in subsidiaries	2,457		2,590
Due from affiliates	0		0
Property, plant and equipment, net	1,404		1,397
Goodwill	1,127		1,127
Intangible assets	985		989
Deferred income taxes	380		380
Other non-current assets	66		62
TOTAL ASSETS	9,767		10,063
CURRENT LIABILITIES
Accounts payable and accrued liabilities	454		667
Due to affiliates	0		0
Short-term debt	0		25
Long-term debt – current portion	1		1
Total current liabilities	455		693
Long-term debt, net of current portion	15		15
Due to affiliates	826		881
Pension plan liability	0		0
Other employee benefits liability	235		237
Deferred income taxes	0		0
Other liabilities	175		175
OWENS CORNING STOCKHOLDERS' EQUITY
Preferred stock	0		0
Common stock	0		0
Additional paid in capital	6,433		6,483
Accumulated earnings	1,628		1,579
Accumulated other comprehensive deficit	0		0
Cost of common stock in treasury	0		0
Total Owens Corning stockholders’ equity	8,061		8,062
Noncontrolling interests	0		0
Total equity	8,061		8,062
TOTAL LIABILITIES AND EQUITY	9,767		10,063
Non Guarantor Subsidiaries
CURRENT ASSETS
Cash and cash equivalents	73		66		62	54
Receivables, less allowances	844		674
Due from affiliates	76		0
Inventories	285		290
Assets held for sale	14		16
Other current assets	89		94
Total current assets	1,381		1,140
Investment in subsidiaries	559		558
Due from affiliates	826		881
Property, plant and equipment, net	1,088		1,143
Goodwill	41		41
Intangible assets	231		238
Deferred income taxes	23		29
Other non-current assets	127		128
TOTAL ASSETS	4,276		4,158
CURRENT LIABILITIES
Accounts payable and accrued liabilities	384		235
Due to affiliates	926		945
Short-term debt	14		6
Long-term debt – current portion	2		2
Total current liabilities	1,326		1,188
Long-term debt, net of current portion	255		125
Due to affiliates	0		0
Pension plan liability	122		137
Other employee benefits liability	14		15
Deferred income taxes	22		22
Other liabilities	41		43
OWENS CORNING STOCKHOLDERS' EQUITY
Preferred stock	0		0
Common stock	0		0
Additional paid in capital	1,763		1,927
Accumulated earnings	694		663
Accumulated other comprehensive deficit	0		0
Cost of common stock in treasury	0		0
Total Owens Corning stockholders’ equity	2,457		2,590
Noncontrolling interests	39		38
Total equity	2,496		2,628
TOTAL LIABILITIES AND EQUITY	4,276		4,158
Consolidation Eliminations
CURRENT ASSETS
Cash and cash equivalents	0		0		0	0
Receivables, less allowances	0		0
Due from affiliates	(2,742)		(2,858)
Inventories	0		0
Assets held for sale	0		0
Other current assets	0		0
Total current assets	(2,742)		(2,858)
Investment in subsidiaries	(10,518)		(10,652)
Due from affiliates	(826)		(881)
Property, plant and equipment, net	0		0
Goodwill	0		0
Intangible assets	(203)		(210)
Deferred income taxes	0		0
Other non-current assets	0		0
TOTAL ASSETS	(14,289)		(14,601)
CURRENT LIABILITIES
Accounts payable and accrued liabilities	0		0
Due to affiliates	(2,742)		(2,858)
Short-term debt	0		0
Long-term debt – current portion	0		0
Total current liabilities	(2,742)		(2,858)
Long-term debt, net of current portion	0		0
Due to affiliates	(826)		(881)
Pension plan liability	0		0
Other employee benefits liability	0		0
Deferred income taxes	0		0
Other liabilities	(203)		(210)
OWENS CORNING STOCKHOLDERS' EQUITY
Preferred stock	0		0
Common stock	0		0
Additional paid in capital	(8,196)		(8,410)
Accumulated earnings	(2,322)		(2,242)
Accumulated other comprehensive deficit	0		0
Cost of common stock in treasury	0		0
Total Owens Corning stockholders’ equity	(10,518)		(10,652)
Noncontrolling interests	0		0
Total equity	(10,518)		(10,652)
TOTAL LIABILITIES AND EQUITY	$ (14,289)		$ (14,601)

[1] 10 shares authorized; none issued or outstanding at March 31, 2015, and

[2] 400 shares authorized; 135.5 issued and 118.0 outstanding at March 31, 2015; 135.5 issued and 117.8 outstanding at

[3] 17.5 shares at March 31, 2015, and 17.7 shares at

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CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE EARNINGS (DETAIL) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Condensed Financial Statements Captions [Line Items]
NET EARNINGS	$ 19	$ 120
Currency translation adjustment (net of tax)	(50)	(16)
Pension and other postretirement adjustment (net of tax)	8	3
Deferred loss on hedging transactions (net of tax)	1	0
COMPREHENSIVE EARNINGS (LOSS)	(22)	107
Less: Comprehensive earnings attributable to noncontrolling interests	1	0
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	(23)	107
Parent Company
Condensed Financial Statements Captions [Line Items]
NET EARNINGS	18	120
Currency translation adjustment (net of tax)	(50)	(16)
Pension and other postretirement adjustment (net of tax)	8	3
Deferred loss on hedging transactions (net of tax)	1	0
COMPREHENSIVE EARNINGS (LOSS)	(23)	107
Less: Comprehensive earnings attributable to noncontrolling interests	0	0
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	(23)	107
Guarantor Subsidiaries
Condensed Financial Statements Captions [Line Items]
NET EARNINGS	51	150
Currency translation adjustment (net of tax)	0	0
Pension and other postretirement adjustment (net of tax)	0	0
Deferred loss on hedging transactions (net of tax)	0	0
COMPREHENSIVE EARNINGS (LOSS)	51	150
Less: Comprehensive earnings attributable to noncontrolling interests	0	0
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	51	150
Non Guarantor Subsidiaries
Condensed Financial Statements Captions [Line Items]
NET EARNINGS	30	62
Currency translation adjustment (net of tax)	0	0
Pension and other postretirement adjustment (net of tax)	0	0
Deferred loss on hedging transactions (net of tax)	0	0
COMPREHENSIVE EARNINGS (LOSS)	30	62
Less: Comprehensive earnings attributable to noncontrolling interests	1	0
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	29	62
Consolidation Eliminations
Condensed Financial Statements Captions [Line Items]
NET EARNINGS	(80)	(212)
Currency translation adjustment (net of tax)	0	0
Pension and other postretirement adjustment (net of tax)	0	0
Deferred loss on hedging transactions (net of tax)	0	0
COMPREHENSIVE EARNINGS (LOSS)	(80)	(212)
Less: Comprehensive earnings attributable to noncontrolling interests	0	0
COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING	$ (80)	$ (212)