Owens Corning (OC) 10-K 12 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Jan. 31, 2013
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'Owens Corning	'
Entity Central Index Key	'0001370946	'
Document Type	'10-K	'
Document Period End Date	31-Dec-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'FY	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Well Known Seasoned Issuer	'Yes	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Public Float	$4,654,656,423	'
Entity Common Stock Shares Outstanding	'	117,835,363

CONSOLIDATED_STATEMENTS_OF_EAR

CONSOLIDATED STATEMENTS OF EARNINGS (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF EARNINGS	'	'	'
NET SALES	$5,295	$5,172	$5,335
COST OF SALES	4,329	4,375	4,307
Gross margin	966	797	1,028
OPERATING EXPENSES	'	'	'
Marketing and administrative expenses	530	509	525
Science and technology expenses	77	79	77
Charges related to cost reduction actions	8	51	0
Employee emergence equity program expense	0	0	0
Other expenses, net	-34	10	-35
Total operating expenses	581	649	567
Earnings before interest and taxes	385	148	461
Interest expense, net	112	114	108
EARNINGS BEFORE TAXES	273	-40	353
Less: Income tax expense (benefit)	68	-28	74
Equity in net earnings of affiliates	0	-4	2
NET EARNINGS	205	-16	281
Less: Net earnings attributable to noncontrolling interests	1	3	5
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	$204	($19)	$276
Earnings Per Share Abstract	'	'	'
Basic	$1.73	($0.16)	$2.25
Diluted	$1.71	($0.16)	$2.23
Weighted Average Common Shares [Abstract]	'	'	'
Basic	118.2	119.4	122.5
Diluted	119.1	119.4	123.5

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement Of Income And Comprehensive Income Abstract	'	'	'
NET EARNINGS	$205	($16)	$281
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest	1	3	5
Comprehensive Income Net Of Tax	271	-68	155
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	$1	$2	($2)

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEET (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified
CURRENT ASSETS	'		'		'	'
Cash and cash equivalents	$57		$55		$52	$52
Receivables, less allowances	683		600		'	'
Inventories	810		786		'	'
Assets held for sale - current	29		0		'	'
Other current assets	269		176		'	'
Total current assets	1,848		1,617		'	'
Property, plant and equipment, net	2,932		2,903		'	'
Goodwill balance	1,166		1,143		'	'
Intangible assets	1,040		1,045		'	'
Deferred income taxes	436		604		'	'
Other non-current assets	225		256		'	'
TOTAL ASSETS	7,647		7,568		'	'
CURRENT LIABILITIES	'		'		'	'
Accounts Payable and Accrued Liabilities, Current	988		907		'	'
Short-term debt	1		5		'	'
Long-term debt - current portion	3		4		'	'
Total current liabilities	992		916		'	'
Long-term debt, net of current portion	2,024		2,076		'	'
Pension plan liability	336		480		'	'
Other employee benefits liability	242		274		'	'
Deferred income tax liability	23		38		'	'
Other liabilities	200		209		'	'
Commitments and Contingencies	'		'		'	'
OWENS CORNING STOCKHOLDERS' EQUITY	'		'		'	'
Additional paid in capital	3,938		3,925		'	'
Accumulated earnings (deficit)	655		451		'	'
Accumulated other comprehensive deficit	-297		-364		'	'
Cost of common stock in treasury (c)	504	[1]	475	[1]	'	'
Total Owens Corning stockholders' equity	3,793		3,538		'	'
Noncontrolling interest	37		37		'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,830		3,575		3,741	3,686
TOTAL LIABILITIES AND EQUITY	$7,647		$7,568		'	'
[1]	17.7 shares at Dec. 31, 2013 and 17.3 shares at Dec. 31, 2012

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, except Per Share data, unless otherwise specified
Consolidated Balance Sheets Parentheticals [Abstract]	'	'
Allowance for doubtful accounts	$14	$17
Preferred stock, par value	$0.01	$0.01
Preferred stock, authorized	10	10
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Common stock, par value	$0.01	$0.01
Common stock, authorized	400	400
Common stock, issued	135.5	135.6
Common stock, outstanding	117.8	118.3
Treasury stock shares	17.7	17.3

CONSOLIDATED_STATEMENTS_OF_STO

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
IncreaseDecreaseInStockholdersEquityRollForward	'	'	'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$3,830,000,000	$3,575,000,000	$3,741,000,000	$3,686,000,000
SharesOutstanding	117,800,000	118,300,000	120,900,000	124,100,000
NET EARNINGS	205,000,000	-16,000,000	281,000,000	'
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	-28,000,000	5,000,000	-39,000,000	'
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseSOE	94,000,000	-56,000,000	-80,000,000	'
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseSOE	1,000,000	2,000,000	-2,000,000	'
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	6	-22,000,000	-3,000,000	'
Options, Outstanding, Number, Options Exercised	-549,800	-520,120	-374,738	'
Common Stock Member	'	'	'	'
IncreaseDecreaseInStockholdersEquityRollForward	'	'	'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,000,000	1,000,000	1,000,000	1,000,000
NET EARNINGS	0	0	0	'
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	0	0	0	'
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseSOE	0	0	0	'
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseSOE	0	0	'	'
Options, Outstanding, Number, Options Exercised	500,000	500,000	100,000	'
Treasury Stock Shares Acquired	-1,600,000	-3,800,000	-4,200,000	'
StockIssuedDuringPeriodSharesShareBasedCompensation	600,000	700,000	900,000	'
TreasuryStockMember	'	'	'	'
IncreaseDecreaseInStockholdersEquityRollForward	'	'	'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	-504,000,000	-475,000,000	-362,000,000	-229,000,000
SharesOutstanding	17,700,000	17,300,000	13,500,000	9,300,000
NET EARNINGS	0	0	0	'
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	0	0	0	'
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseSOE	0	0	0	'
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseSOE	0	0	'	'
TreasuryStockValueAcquiredCostMethod	-63,000,000	-113,000,000	-133,000,000	'
Options, Outstanding, Number, Options Exercised	-600,000	'	'	'
Treasury Stock Shares Acquired	1,600,000	3,800,000	4,200,000	'
StockIssuedDuringPeriodSharesShareBasedCompensation	-600,000	'	'	'
AdditionalPaidInCapitalMember	'	'	'	'
IncreaseDecreaseInStockholdersEquityRollForward	'	'	'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,938,000,000	3,925,000,000	3,907,000,000	3,876,000,000
NET EARNINGS	0	0	0	'
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	0	0	0	'
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseSOE	0	0	0	'
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseSOE	0	0	'	'
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	'	-16,000,000	'	'
RetainedEarningsMember	'	'	'	'
IncreaseDecreaseInStockholdersEquityRollForward	'	'	'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	655,000,000	451,000,000	470,000,000	194,000,000
NET EARNINGS	204,000,000	-19,000,000	276,000,000	'
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	0	0	0	'
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseSOE	0	0	0	'
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseSOE	0	0	'	'
AccumulatedOtherComprehensiveIncomeMember	'	'	'	'
IncreaseDecreaseInStockholdersEquityRollForward	'	'	'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	-297,000,000	-364,000,000	-315,000,000	-194,000,000
NET EARNINGS	0	0	0	'
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	-28,000,000	5,000,000	-39,000,000	'
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseSOE	94,000,000	-56,000,000	-80,000,000	'
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseSOE	1,000,000	2,000,000	-2,000,000	'
NoncontrollingInterestMember	'	'	'	'
IncreaseDecreaseInStockholdersEquityRollForward	'	'	'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	37,000,000	37,000,000	40,000,000	38,000,000
NET EARNINGS	1,000,000	3,000,000	5,000,000	'
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	-1,000,000	0	0	'
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseSOE	0	0	0	'
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseSOE	0	0	'	'
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	'	($6,000,000)	($3,000,000)	'

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
NET CASH FLOW PROVIDED BY (USED FOR) OPERATING ACTIVITIES	'	'	'
NET EARNINGS	$205	($16)	$281
Adjustments to reconcile net earnings to cash provided by (used for) operating activities:	'	'	'
Depreciation and amortization	332	349	318
Gain on sale of business and fixed assets	-6	-17	-30
Deferred income taxes	54	-59	55
Provision for pension and other employee benefits liabilities	23	36	36
Share Based Compensation	28	24	21
Other non-cash	-18	-14	-22
Change in working capital	'	'	'
Change in receivables	-77	24	-48
Change in Inventories	-27	-4	-179
Change in accounts payable and accrued liabilities	46	23	-41
Change in other current assets	4	-39	-35
IncreaseDecreaseInOtherWorkingCapital	0	2	41
Pension fund contribution	-39	-50	-117
Payments for other employee benefits liabilities	-22	-22	-24
Other	-27	39	33
Net cash flow provided by (used for) operating activities	418	330	289
PaymentsOfDebtExtinguishmentCosts	0	74	0
NET CASH FLOW USED FOR INVESTING ACTIVITIES	'	'	'
Additions to plant and equipment	-353	-332	-442
Payments to Acquire Businesses, Net of Cash Acquired	-62	0	-84
Net cash flow used for investing activities	-307	-253	-445
Proceeds from Hurricane Sandy Insurance Claims	58	20	0
NET CASH FLOW PROVIDED BY (USED FOR) FINANCING ACTIVITIES	'	'	'
Proceeds from senior revolving credit and receivables securitization facilities	1,063	1,877	1,912
Payments on senior revolving credit and receivables securitization facilities	-1,103	-1,957	-1,630
Proceeds from long-term debt	0	599	6
Payments on long-term debt	-2	-441	-10
Net decrease in short-term debt	-4	-23	26
Purchase of noncontrolling interest	0	-22	0
Purchase of treasury stock	-63	-113	-138
Other Financing	2	4	8
Net cash flow provided by (used for) financing activities	-107	-76	174
Effect of exchange rate changes on cash	-2	2	-18
Net decrease in cash and cash equivalents	2	3	0
Cash and cash equivalents at beginning of period	55	52	52
Cash and cash equivalents at end of period	57	55	52
Income Taxes Paid	29	30	24
Interest Paid	$126	$122	$111

GENERAL

GENERAL	12 Months Ended
	Dec. 31, 2013
General Disclosure [Abstract]	'
Accounting Changes and Error Corrections [Text Block]	'
	1.       BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Description of Business
	Owens Corning, a Delaware corporation, is a leading global producer of glass fiber reinforcements and other materials for composite systems and of residential and commercial building materials. The Company operates within two segments: Composites, which includes the Company's Reinforcements and Downstream businesses; and Building Materials, which includes the Company's Insulation and Roofing businesses. Through these lines of business, Owens Corning manufactures and sells products worldwide. The Company maintains leading market positions in all of its major product categories.
	Basis of Presentation
	Unless the context requires otherwise, the terms “Owens Corning,” “Company,” “we” and “our” in this report refer to Owens Corning and its subsidiaries.
	The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States.
	Principles of Consolidation
	The Consolidated Financial Statements of the Company include the accounts of majority-owned subsidiaries. Intercompany accounts and transactions are eliminated.
	Reclassifications
	Certain reclassifications have been made to the 2012 and 2011 Consolidated Financial Statements and Notes to the Consolidated Financial Statements to conform to the classifications used in 2013.
	Use of Estimates and Assumptions
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from those estimates.
	Revenue Recognition
	Revenue is recognized when title and risk of loss pass to the customer and collectability is reasonably assured. Provisions for discounts and rebates to customers, returns, warranties and other adjustments are provided in the same period that the related sales are recorded and are based on historical experience, current conditions and contractual obligations, as applicable.
	Cost of Sales
	Cost of sales includes material, labor, energy and manufacturing overhead costs, including depreciation and amortization expense associated with the manufacture and distribution of the Company's products. Distribution costs include inbound freight costs; purchasing and receiving costs; inspection costs; warehousing costs; shipping and handling costs, which include costs incurred relating to preparing, packaging, and shipping products to customers; and other costs of the Company's distribution network. All shipping and handling costs billed to the customer are included as net sales in the Consolidated Statements of Earnings (Loss).
	Marketing and Administrative Expenses
	Marketing and administrative expenses include selling and administrative costs, including depreciation and amortization expense, not directly associated with the manufacture and distribution of the Company's products.
	Included in marketing and administrative expenses are marketing and advertising costs, which are expensed the first time the advertisement takes place. Marketing and advertising costs include advertising, and marketing communications. Marketing and advertising expenses for the years ended December 31, 2013, 2012, and 2011 were $105 million, $109 million and $105 million, respectively.
	Science and Technology Expenses
	The Company incurs certain expenses related to science and technology. These expenses include salaries, building and equipment costs, utilities, administrative expenses, materials and supplies associated with the improvement and development of the Company's products and manufacturing processes. These costs are expensed as incurred.
	Earnings (Loss) per Share
	Basic earnings (loss) per share are computed using the weighted-average number of common shares outstanding during the period. Diluted earnings (loss) per share reflect the dilutive effect of common equivalent shares and increased shares that would result from the conversion of equity securities. The effects of anti-dilution are not presented.
	Cash and Cash Equivalents
	The Company defines cash and cash equivalents as cash and time deposits with original maturities of three months or less when purchased.
	Accounts Receivable
	Trade accounts receivable are recorded at the invoiced amount and do not bear interest. The allowance for doubtful accounts is an estimate of the amount of probable credit losses in our existing accounts receivable. Account balances are charged off against the allowance when the Company believes it is probable the receivable will not be recovered.
	Inventory Valuation
	Inventory costs include material, labor, and manufacturing overhead costs, including depreciation and amortization expense associated with the manufacture and distribution of the Company's products. Inventories are stated at lower of cost or market value and expense estimates are made for excess and obsolete inventories. Cost is determined by the first-in, first-out (“FIFO”) method.
	Investments in Affiliates
	The Company accounts for investments in affiliates of 20% to 50% ownership when the Company does not have a controlling financial interest using the equity method under which the Company's share of earnings and losses of the affiliate is reflected in earnings and dividends are credited against the investment in affiliate when declared. Investments in affiliates are recorded in other non-current assets on the Consolidated Balance Sheets and as of December 31, 2013 and 2012 the total value of investments was $51 million.
	Goodwill and Other Intangible Assets
	Goodwill assets are not amortized but are tested for impairment on at least an annual basis. In the current year, as part of the annual assessment, the Company used a quantitative approach to determine whether the fair value of a reporting unit was less than its carrying amount.
	As part of our testing process for goodwill we estimated fair values using a discounted cash flow approach from the perspective of a market participant. Significant estimates in the discounted cash flow approach are cash flow forecasts of our reporting units, the discount rate, the terminal business value and the projected income tax rate. The cash flow forecasts of the reporting units are based upon management's long-term view of our markets and are the forecasts that are used by senior management and the Board of Directors to evaluate operating performance. The discount rate utilized is management's estimate of what the market's weighted average cost of capital is for a company with a similar debt rating and stock volatility, as measured by beta. The projected income tax rates utilized are the statutory tax rates for the countries where each reporting unit operates. The terminal business value is determined by applying a business growth factor to the latest year for which a forecast exists. As part of our goodwill quantitative testing process, we would evaluate whether there are reasonably likely changes to management's estimates that would have a material impact on the results of the goodwill impairment testing.
	Other indefinite-lived intangible assets are not amortized but are tested for impairment on at least an annual basis or when determined to have a finite useful life. Substantially all of the indefinite-lived intangible assets are in trademarks and trade names. The Company uses the royalty relief approach to determine whether it is more likely than not that the fair value of these assets is less than its carrying amount. This review is performed annually, or when circumstances arise which indicate there may be impairment. When applying the royalty relief approach, the Company performs a discounted cash flow analysis based on the value derived from owning these trademarks and trade names and being relieved from paying royalty to third parties. Significant assumptions used include projected cash flows, discount rate, projected income tax rate and terminal business value. These inputs are considered Level 3 inputs under the fair value hierarchy as they are the Company's own data, and are unobservable in the marketplace.
	Identifiable intangible assets with a determinable useful life are amortized over that determinable life. Amortization expense for the years ended December 31, 2013, 2012 and 2011 was $22 million, $21 million and $22 million, respectively. See Note 5 to the Consolidated Financial Statements for further discussion.
	Properties and Depreciation
	Property, plant and equipment are stated at cost and depreciated over their estimated useful lives using the straight-line method. Property, plant and equipment accounts are relieved of the cost and related accumulated depreciation when assets are disposed of or otherwise retired.
	Precious metals used in our production tooling are included in property, plant and equipment and are depleted as they are consumed during the production process. Depletion typically represents an annual expense of less than 3 percent of the outstanding value and is recorded in cost of sales on the Consolidated Statements of Earnings (Loss).
	For the years ended December 31, 2013, 2012 and 2011 depreciation expense was $310 million, $328 million and $296 million, respectively. In 2013, depreciation expense included $20 million of accelerated depreciation related to the change in useful life of assets recorded as a result of our assessment of the future utility of an incomplete Insulation facility located in Cordele, Georgia.  In 2013 and 2012, depreciation expense also included $9 million and $55 million of accelerated depreciation related to cost reduction actions further explained in Note 15 to the Consolidated Financial Statements.
	The range of useful lives for the major components of the Company's plant and equipment is as follows:
	Buildings and leasehold improvements       15 – 40 years
	Machinery and equipment
	Furnaces                      4 – 15 years
	Information systems               5 – 10 years
	Equipment               5 – 20 years
	Expenditures for normal maintenance and repairs are expensed as incurred.
	Asset Impairments
	The Company evaluates tangible and intangible long-lived assets for impairment when triggering events have occurred. This requires significant assumptions including projected cash flows, projected income tax rate and terminal business value. These inputs are considered Level 3 inputs under the fair value hierarchy as they are the Company's own data, and are unobservable in the marketplace. Changes in management intentions, market conditions or operating performance could indicate that impairment charges might be necessary that would be material to the Company's Consolidated Financial Statements in any given period.
	Income Taxes
	The Company recognizes current tax liabilities and assets for the estimated taxes payable or refundable on the tax returns for the current year. Deferred tax balances reflect the impact of temporary differences between the carrying amount of assets and liabilities and their tax basis. Amounts are stated at enacted tax rates expected to be in effect when taxes are actually paid or recovered. In addition, realization of certain deferred tax assets is dependent upon our ability to generate future taxable income. The Company records a valuation allowance to reduce its deferred tax assets to the amount that it believes is more likely than not to be realized. In addition, the Company estimates tax reserves to cover potential taxing authority claims for income taxes and interest attributable to audits of open tax years.
	Taxes Collected from Customers and Remitted to Government Authorities and Taxes Paid to Vendors
	Taxes are assessed by various governmental authorities at different rates on many different types of transactions.  The Company charges sales tax or Value Added Tax (“VAT”) on sales to customers where applicable, as well as captures and claims back all available VAT that has been paid on purchases.  VAT is recorded in separate payable or receivable accounts and does not affect revenue or cost of sales line items in the income statement.  VAT receivable is recorded as a percentage of qualifying purchases at the time the vendor invoice is processed.  VAT payable is recorded as a percentage of qualifying sales at the time an Owens Corning sale to a customer subject to VAT occurs.  Amounts are paid to the taxing authority according to the method and collection prescribed by local regulations.  Where applicable, VAT payable is netted against VAT receivable. The Company also pays sales tax to vendors who include a tax, required by government regulations, to the purchase price charged to the Company.
	Pension and Other Postretirement Benefits
	Accounting for pensions and other postretirement benefits involves estimating the cost of benefits to be provided well into the future and attributing that cost over the time period each employee works. To accomplish this, extensive use is made of assumptions about investment returns, discount rates, inflation, mortality, turnover and medical costs.
	Derivative Financial Instruments
	The Company recognizes all derivative instruments as either assets or liabilities at fair value on the balance sheet. To the extent that a derivative is effective as a cash flow hedge, the change in fair value of the derivative is deferred in accumulated other comprehensive income/deficit (“OCI”). Any portion considered to be ineffective is reported in earnings immediately. To the extent that a derivative is effective as a fair value hedge, the change in the fair value of the derivative is offset by the change in the fair value of the item being hedged in the Consolidated Statements of Earnings (Loss). See Note 4 to the Consolidated Financial Statements for further discussion.
	Foreign Currency
	The functional currency of the Company's subsidiaries is generally the applicable local currency. Assets and liabilities of foreign subsidiaries are translated into United States dollars at the period-end rate of exchange, and their Statements of Earnings (Loss) and Statements of Cash Flows are converted on an ongoing basis at the monthly average rate. The resulting translation adjustment is included in accumulated OCI in the Consolidated Balance Sheets and Consolidated Statements of Stockholders' Equity. Transaction gains and losses that arise from exchange rate fluctuations on transactions denominated in a currency other than the functional currency are included in the Consolidated Statements of Earnings (Loss) as incurred. The Company recorded a foreign currency transaction loss of $3 million, a loss of $3 million and a gain of $5 million during the years ended December 31, 2013, 2012, and 2011, respectively.

SUMMARY_OF_SIGNIFICANT_ACCOUNT

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Significant Accounting Policies [Text Block]	'
	OWENS CORNING AND SUBSIDIARIES
	NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

SEGMENT_INFORMATION

SEGMENT INFORMATION	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
SEGMENT INFORMATION	'
	2.       SEGMENT INFORMATION
	In the first quarter of 2009, the Company's Chief Operating Decision Maker (“CODM”) fully implemented the structure of assessing performance and allocating resources based on two operating segments, Composites and Building Materials. Beginning in the second half of 2008, certain organizational structure and other changes were made by the CODM to facilitate managing the business from two operating segments. These changes, which became fully functional in the first quarter 2009, included the hiring of a Building Materials Group President, restructuring the Company's incentive compensation plan for 2009, and changing the reporting structure of the CODM's leadership team.
	The Company has two reportable segments: Composites and Building Materials. Accounting policies for the segments are the same as those for the Company. The Company's two 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.
	Building Materials – comprised of our Insulation and Roofing businesses. Within the 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. Within the 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). External customer sales are attributed to geographic region based upon the location from which the product is shipped to the external customer.
						Twelve Months Ended
						Dec. 31,
							2013			2012			2011
	Reportable Segments
	Composites					$	1,845		$	1,859		$	1,976
	Building Materials						3,609			3,482			3,537
		Total reportable segments					5,454			5,341			5,513
	Corporate eliminations						-159			-169			-178
	NET SALES					$	5,295		$	5,172		$	5,335
	External Customer Sales by Geographic Region
	United States					$	3,644		$	3,504		$	3,552
	Europe						545			558			619
	Asia Pacific						627			639			674
	Canada and other						479			471			490
	NET SALES					$	5,295		$	5,172		$	5,335
	Sales by Product Group
	Composites					$	1,845		$	1,859		$	1,976
	Insulation						1,642			1,468			1,368
	Roofing						1,967			2,014			2,169
	Corporate Eliminations						-159			-169			-178
	NET SALES					$	5,295		$	5,172		$	5,335
	Earnings Before Interest and Taxes
	Earnings before interest and taxes (“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.
	The following table summarizes EBIT by segment (in millions):
			Twelve Months Ended
			Dec. 31,
			2013			2012				2011
	Reportable Segments
	Composites		$	98		$	91			$	201
	Building Materials			426			293				332
		Total reportable segments	$	524		$	384			$	533
	Corporate, Other and Eliminations
	Charges related to cost reduction actions and related items (a)		$	-26		$	-136			$	-17
	Net gain (loss) related to Hurricane Sandy property damage and insurance recovery			15			-9				-
	Accelerated depreciation related to a change in the useful life of assets at our incomplete Cordele, Georgia facility			-20			-				-
	Gain on sale of assets and related charges (b)			-			-				16
	General corporate expense			-108			-91				-71
	EBIT		$	385		$	148			$	461
	(a)       For 2013, 2012, and 2011, includes $8 million, $51 million, and $0 million of charges related to cost reduction actions and $18 million, $85 million, and $17 million of other related items.
	(b)       The gain on sale of assets and related charges for 2011 includes $16 million gain on sale of Capivari, Brazil.
	TOTAL ASSETS AND PROPERTY, PLANT AND EQUIPMENT BY GEOGRAPHIC REGION
	The following table summarizes total assets by segment and property, plant and equipment by geographic region (in millions):
					Dec. 31,
	TOTAL ASSETS				2013			2012
	Reportable Segments
	Composites			$	2,379		$	2,414
	Building Materials				4,011			3,896
		Total reportable segments		$	6,390		$	6,310
	Reconciliation to consolidated total assets
	Cash and cash equivalents			$	57		$	55
	Current and noncurrent Deferred income taxes				573			685
	Investments in affiliates				51			51
	Assets held for sale - current				29			-
	Corporate property, plant and equipment, other assets and eliminations				547			467
	CONSOLIDATED TOTAL ASSETS			$	7,647		$	7,568
	PROPERTY, PLANT AND EQUIPMENT BY GEOGRAPHIC REGION
United States			$	1,688		$	1,708
Europe				520			513
Canada				131			150
Asia Pacific				375			350
Other				218			182
TOTAL PROPERTY, PLANT AND EQUIPMENT			$	2,932		$	2,903
PROVISION FOR DEPRECIATION AND AMORTIZATION
The following table summarizes the provision for depreciation and amortization by segment (in millions):
			Twelve Months Ended
			Dec. 31,
				2013			2012			2011
Reportable Segments
Composites			$	130		$	123		$	128
Building Materials				142			143			157
	Total reportable segments		$	272		$	266		$	285
General corporate depreciation and amortization (a)			$	60		$	83		$	33
CONSOLIDATED PROVISION FOR DEPRECIATION
	AND AMORTIZATION		$	332		$	349		$	318
(a) 2013 includes $9 million of accelerated depreciation related to cost reduction actions and $20 million of accelerated depreciation related to the change in useful life of assets recorded as a result of our assessment of the future utility of an incomplete Insulation facility located in Cordele, Georgia. 2012 includes $55 million of accelerated depreciation charges related to cost reduction actions.
ADDITIONS TO PROPERTY, PLANT AND EQUIPMENT
The following table summarizes additions to property, plant and equipment by segment (in millions):
			Twelve Months Ended
			Dec. 31,
				2013			2012			2011
Reportable Segments
Composites			$	155		$	167		$	256
Building Materials				167			127			151
	Total reportable segments		$	322		$	294		$	407
General corporate additions			$	31		$	38		$	35
CONSOLIDATED ADDITIONS TO PROPERTY, PLANT AND
	EQUIPMENT		$	353		$	332		$	442

INVENTORIES

INVENTORIES	12 Months Ended
	Dec. 31, 2013
Inventories Abstract	'
INVENTORIES	'
	3. INVENTORIES
	Inventories consist of the following (in millions):
		Dec. 31,
		2013		2012
	Finished goods	$	580	$	554
	Materials and supplies		230		232
	Total inventories	$	810	$	786

DERIVATIVE_FINANCIAL_INSTRUMEN

DERIVATIVE FINANCIAL INSTRUMENTS	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
DERIVATIVE FINANCIAL INSTRUMENTS	'
	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 December 31, 2013 and 2012, 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 and respective location of derivatives and hedging instruments on the Consolidated Balance Sheets (in millions):
					Fair Value at
					Dec. 31,		Dec. 31,
			Location		2013		2012
	Derivative assets designated as hedging instruments:
	Cash flow hedges:
		Natural gas and electricity	Other current assets		$	1	$	-
		Amount of gain recognized in OCI (effective portion)	OCI		$	1	$	-
	Derivative liabilities designated as hedging instruments:
	Cash flow hedges:
			Accounts payable and
		Natural gas and electricity		accrued liabilities	$	-	$	1
		Amount of loss recognized in OCI (effective portion)	OCI		$	-	$	1
	Fair value hedges:
			Accounts payable and
		Interest rate swaps		accrued liabilities	$	3	$	-
	Derivative assets not designated as hedging instruments:
		Foreign exchange contracts	Other current assets		$	-	$	1
	Derivative liabilities not designated as hedging instruments:
			Accounts payable and
		Foreign exchange contracts		accrued liabilities	$	1	$	3
	The following table presents the impact and respective location of derivative activities on the Consolidated Statements of Earnings (Loss) (in millions):
										Twelve Months Ended
										Dec. 31,
					Location				2013		2012		2011
	Derivative activity designated as hedging instruments:
	Natural gas and electricity:
		Amount of loss reclassified from OCI into earnings
			(effective portion)		Cost of sales				$	1	$	5	$	4
	Interest rate swaps:
		Amount of (gain) loss recognized in earnings			Interest
			(ineffective portion)			expense, net			$	-1	$	-	$	2
	Derivative activity not designated as hedging instruments:
	Natural gas and electricity:
		Amount of (gain) loss recognized in earnings			Other expenses (income), net				$	-	$	-	$	-1
	Foreign currency exchange contract:
		Amount of (gain) loss recognized in earnings (a)			Other expenses (income), net				$	12	$	17	$	-14
	(a)		(Gains) / 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 (income) expenses, 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 on the Consolidated Balance Sheets and is subsequently recognized in cost of sales on the Consolidated Statements of Earnings (Loss) 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 (Loss).
	The Company currently has natural gas and electricity commodity 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 50% 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 December 31, 2013, $1 million of gains included in OCI on the Consolidated Balance Sheets relate to contracts that will 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 gains include the recognition of the hedged item through earnings.
	Fair Value Hedges
	The Company manages its interest rate exposure by balancing the mix of its fixed and variable rate instruments at certain times 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 (Loss).
	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 (Loss).

GOODWILL_AND_OTHER_INTANGIBLE_

GOODWILL AND OTHER INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
GOODWILL AND OTHER INTANGIBLE ASSETS	'
	5. GOODWILL AND OTHER INTANGIBLE ASSETS
	Intangible assets and goodwill consist of the following (in millions):
	Dec. 31, 2013			Weighted Average Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	Amortizable intangible assets:
		Customer relationships		19	$	181	$	-68	$	113
		Technology		20		195		-74		121
		Franchise and other agreements		14		36		-16		20
	Indefinite-lived intangible assets:
		Trademarks				786		-		786
			Total intangible assets		$	1,198	$	-158	$	1,040
	Goodwill				$	1,166
	Dec. 31, 2012			Weighted Average Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	Amortizable intangible assets:
		Customer relationships		19	$	169	$	-58	$	111
		Technology		20		198		-64		134
		Franchise and other agreements		15		37		-14		23
	Indefinite-lived intangible assets:
		Trademarks				777		-		777
			Total intangible assets		$	1,181	$	-136	$	1,045
	Goodwill				$	1,143
	The changes in the net carrying amount of goodwill by segment are as follows (in millions):
			Composites		Building Materials		Total
	Balance as of December 31, 2012		$	56	$	1,087	$	1,143
	Acquisitions (see Note 9)			2		22		24
	Foreign currency adjustments			-1		-		-1
	Balance as of December 31, 2013		$	57	$	1,109	$	1,166
	Other Intangible Assets
	The Company amortizes the cost of other intangible assets over their estimated useful lives, which range up to twenty five years. The Company expects the ongoing amortization expense for amortizable intangible assets to be $23 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 its amortizable intangible assets. These costs are reported in Other expenses (income), net on the Consolidated Statements of Earnings (Loss) as incurred.
	Goodwill and Indefinite-Lived Intangible Assets
	The Company tests goodwill and indefinite-lived intangible assets for impairment as of October 1 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. The annual test performed in 2013 resulted in no impairment of goodwill.

PROPERTY_PLANT_AND_EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT	12 Months Ended
	Dec. 31, 2013
Property, Plant And Equipment [Abstract]	'
PROPERTY, PLANT AND EQUIPMENT	'
	6. PROPERTY, PLANT AND EQUIPMENT
	Property, plant and equipment consist of the following (in millions):
		Dec. 31,		Dec. 31,
		2013		2012
	Land	$	210	$	222
	Buildings and leasehold improvements		811		789
	Machinery and equipment		3,353		3,223
	Construction in progress		173		147
			4,547		4,381
	Accumulated depreciation		-1,615		-1,478
	Property, plant and equipment, net	$	2,932	$	2,903
	Machinery and equipment includes certain precious metals used in the Company's production tooling, which comprise approximately 17% and 18% of total machinery and equipment as of December 31, 2013 and December 31, 2012, 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.

CHANGES_IN_NONCONTROLLING_INTE

CHANGES IN NONCONTROLLING INTERESTS	12 Months Ended
	Dec. 31, 2013
Noncontrolling Interest [Abstract]	'
CHANGES IN NONCONTROLLING INTEREST	'
	7.       CHANGES IN NONCONTROLLING INTERESTS
	In the third quarter of 2012, the Company executed a purchase agreement for the remaining noncontrolling interest of Northern Elastomeric Incorporated (“NEI”), one of the Company's consolidated subsidiaries. As a result of the purchase agreement, NEI became a wholly-owned subsidiary of the Company, with the Company providing $22 million in cash consideration. The transaction resulted in a $6 million decrease in Noncontrolling interests on the Consolidated Balance Sheets.
	The following table discloses the changes in noncontrolling interests on Owens Corning stockholders' equity and effects on net earnings attributable to Owens Corning (in millions):
			Twelve Months Ended
			Dec. 31,
			2013		2012		2011
	Net earnings (loss) attributable to Owens Corning		$	204	$	-19	$	276
	Increase (decrease) in Owens Corning additional paid in capital for
		NEI purchase agreement		-		-16		-
	Change from net earnings (loss) attributable to Owens Corning and
		change in noncontrolling interests	$	204	$	-35	$	276

INVESTMENTS_IN_AFFILIATES

INVESTMENTS IN AFFILIATES	12 Months Ended
	Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]	'
Equity Method Investments Disclosure [Text Block]	'
	8. INVESTMENTS IN AFFILIATES
	At December 31, 2013 and 2012, the Company's ownership percentage in affiliates, which generally are engaged in the manufacture of fibrous glass and related products for the insulation, construction, reinforcements, and textile markets, included:
			Dec. 31,
			2013		2012
	Arabian Fiberglass Insulation Company, Ltd. (Saudi Arabia)		49%		49%
	Fiberteq LLC (United States)		50%		50%
	Neptco LLC (United States)		50%		50%
	The following tables provide summarized financial information on a combined 100% basis for the Company's affiliates accounted for under the equity method (in millions):
			Dec. 31,
		2013		2012
	Current assets	$	50	$	53
	Non-current assets	$	90	$	85
	Current liabilities	$	25	$	22
	Non-current liabilities	$	23	$	24
		Twelve Months Ended
		Dec. 31,
		2013		2012		2011
	Net sales	$	138	$	140	$	143
	Gross margin	$	7	$	11	$	14
	Net earnings	$	1	$	5	$	5
	Dividends received from entities are accounted for under the equity method. There were no dividends received for the years ended 2013, 2012 and 2011. There were no undistributed earnings of affiliates for the year ended December 31, 2013.

ACQUISITIONS

ACQUISITIONS	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Business Combination Disclosure [Text Block]	'
	9.       ACQUISITIONS
	During the third quarter of 2013, the Company made cash payments of $10 million related to our July 31, 2011 acquisitions of FiberTEK Insulation West, LLC and FiberTEK Insulation, LLC. Deferred payments totaling $15 million remain outstanding and are due in annual installments through 2018. As of December 31, 2013, the deferred payments are recorded at their net present value of $5 million in accounts payable and accrued liabilities and $8 million in other liabilities on the Consolidated Balance Sheets.
	During the second quarter of 2013 the Company completed the acquisitions of Thermafiber Inc., a leading manufacturer of commercial and industrial mineral wool insulation products located in Indiana and Tanaka Kikinzoku (Suzhou) Co., Ltd, a producer of glass fiber bushings in China. The Company provided total consideration that had a fair value of $52 million at the acquisition dates. The acquisitions resulted in the recognition of $19 million in intangible assets; and $24 million in goodwill. The pro-forma effect of these acquisitions on revenues and earnings was not material.

DIVESTITURES

DIVESTITURES	12 Months Ended
	Dec. 31, 2013
Business Divestitures [Abstract]	'
Business Divestitures, Disclosure [Text Block]	'
	10.       DIVESTITURES
	On September 13, 2013, the Company signed an agreement to sell its Composites glass reinforcements facility in Hangzhou, Peoples Republic of China for total compensation 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. As of December 31, 2013 the Company received $34 million in cash, which is recorded as a deposit on the sale. The balance of the compensation, approximately $35 million, is payable upon returning the land to the Hangzhou Government, which is expected during the first half of 2014. The sale, which is expected to close in the first half of 2014, will result in a pre-tax gain of approximately $30 million to $40 million.

ASSETS_AND_LIABILITIES_HELD_FO

ASSETS AND LIABILITIES HELD FOR SALE	12 Months Ended
	Dec. 31, 2013
Discontinued Operations and Disposal Groups [Abstract]	'
Assets and Liabilities Held for Sale [Text Block]	'
	11.       ASSETS HELD FOR SALE
	During 2013, the Company closed its Hangzhou, Peoples Republic of China and Vado, Italy facilities. The assets held for sale consisted of $21 million and $8 million of Property, Plant and Equipment at the Hangzhou and Vado facilities, respectively. There were no other assets or liabilities held for sale related to these facilities as of December 31, 2013.

LEASES

LEASES	12 Months Ended
	Dec. 31, 2013
Leases [Abstract]	'
Leases of Lessee Disclosure [Text Block]	'
	12.       OPERATING LEASES
	The Company leases certain equipment and facilities under operating leases expiring on various dates through 2023. Some of these leases include cost-escalation clauses. Such cost-escalation clauses are recognized on a straight-line basis over the lease term. Total rental expense was $83 million, $79 million and $74 million in the years ended December 31, 2013, 2012 and 2011, respectively. At December 31, 2013, the minimum future rental commitments under non-cancelable operating leases with initial maturities greater than one year payable over the remaining lives of the leases are (in millions):
	Period	Minimum Future Rental Commitments
	2014	$	66
	2015	$	39
	2016	$	31
	2017	$	22
	2018	$	14
	2019 and beyond	$	36

ACCOUNTS_PAYABLE_AND_ACCRUED_L

ACCOUNTS PAYABLE AND ACCRUED LIABILITIES	12 Months Ended
	Dec. 31, 2013
Accounts Payable and Accrued Liabilities, Current [Abstract]	'
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	'
	13. ACCOUNTS PAYABLE AND ACCRUED LIABILITIES
	Accounts payable and accrued liabilities consist of the following (in millions):
			Dec. 31,
			2013		2012
	Accounts payable		$	547	$	498
	Payroll, vacation pay, and incentive compensation			161		115
	Payroll, property, and other taxes			95		98
	Other employee benefits liabilities			39		40
	Warranties (current portion)			19		20
	Legal and audit fees			7		11
	Accrued interest			8		11
	Charges related to cost reduction actions			26		45
	Deferred acquisition payments			5		10
	Other			81		59
		Total	$	988	$	907

WARRANTIES

WARRANTIES	12 Months Ended
	Dec. 31, 2013
Warranties [Abstract]	'
WARRANTIES	'
	14.       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):
		Dec. 31,
			2013		2012
	Beginning balance		$	41	$	38
		Amounts accrued for current year		21		24
		Settlements of warranty claims		-21		-21
	Ending balance		$	41	$	41

COST_REDUCTION_ACTIONS

COST REDUCTION ACTIONS	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
Restructuring and Related Activities Disclosure [Text Block]	'
	15.       COST REDUCTION ACTIONS
	2013 Cost Reduction Actions
	As a result of the Company's decision to divest its Composites glass reinforcements facility in Hangzhou, Peoples Republic of China discussed in Note 10 to the Consolidated Financial Statements, we have recorded $6 million in charges related to cost reduction actions on the Consolidated Statements of Earnings (Loss) for the twelve months ended December 31, 2013.
	The following table summarizes the status of the unpaid liabilities from the Company's 2013 cost reduction actions (in millions):
		Beginning Balance Dec. 31, 2012		Costs Incurred		Payments			Ending Balance Dec. 31, 2013	Cumulative Charges Incurred
	Severance	$	-	$	6	$	-	$	6	$	6
	Total	$	-	$	6	$	-	$	6	$	6
	2
	49
	2012 Cost Reduction Actions
	Composites
	As a result of evaluating market conditions in our Composites segment, we took actions to improve the competitive position of our global manufacturing network by closing certain facilities, with most significant actions taking place in France, Spain and Italy. These actions were primarily due to market conditions that led to lower capacity requirements within the European region. In conjunction with these actions, the Company recorded $20 million and $131 million in charges related to cost reduction actions and related items for the twelve months ended December 31, 2013 and 2012, respectively; of which, $2 million and $49 million, respectively, is related to severance and is included in charges related to cost reduction actions on the Consolidated Statements of Earnings (Loss). The $18 million and $82 million of other charges consist of $9 million and $55 million in accelerated depreciation due to the shortened expected useful life of the closed facilities and $9 million and $27 million in related other charges that primarily consisted of facility closure and related other exit costs, respectively.
	Building Materials
	In the first quarter of 2012, the Company's actions resulted in $5 million in charges, comprised of $2 million in severance costs and $3 million of other charges.
	The following table summarizes the status of the unpaid liabilities from the Company's 2012 cost reduction actions (in millions):
		Beginning Balance Dec. 31, 2012		Costs Incurred		Payments			Ending Balance Dec. 31, 2013	Cumulative Charges Incurred
	Severance	$	45	$	2	$	21	$	26	$	53
	Total	$	45	$	2	$	21	$	26	$	53

DEBT

DEBT	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
DEBT	'
	16. DEBT
	Details of the Company's outstanding long-term debt are as follows (in millions):
			Dec. 31,		Dec. 31,
			2013		2012
	6.50% senior notes, net of discount, due 2016		$	400	$	400
	9.00% senior notes, net of discount, due 2019			248		247
	4.20% senior notes, net of discount, due 2022			599		599
	7.00% senior notes, net of discount, due 2036			540		540
	Accounts receivable securitization facility, maturing in 2016			162		141
	Senior revolving credit facility, maturing in 2018			12		73
	Various capital leases, due through and beyond 2050			49		52
	Various floating rate debt, maturing through 2017			1		2
	Fair value adjustment to debt			16		26
	Total long-term debt			2,027		2,080
	Less – current portion			3		4
		Long-term debt, net of current portion	$	2,024	$	2,076
	Senior Notes
	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, we 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 December 31, 2013.
	In the fourth quarter of 2011, the Company terminated all 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 Facilities
	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 December 31, 2013.
	The Company had $15 million of letters of credit outstanding under the Senior Revolving Credit Facility at December 31, 2013.
	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 the third quarter of 2013 to extend maturity to July 2016 and to reduce the size of the facility to $200 million during the months of November, December, and January each year. At December 31, 2013, the Company utilized the full amount permitted under the terms of the receivables securitization facility. The Company had $38 million of letters of credit outstanding under the receivables securitization facility at December 31, 2013.
	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 December 31, 2013.
	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.
	Debt Maturities
	The aggregate maturities for all long-term debt issues for each of the five years following December 31, 2013 and thereafter are presented in the table below (in millions). The maturities are stated at total cash the Company is contractually obligated to pay third parties and are not stated net of discount. The effects of the interest rate swap are not included in the table below.
	Period		Maturities
	2014		$	3
	2015			3
	2016			580
	2017			3
	2018			15
	2019 and beyond			1,423
	Total		$	2,027
	Short-Term Debt
	At December 31, 2013 and December 31, 2012, short-term borrowings were $1 million and $5 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 2.2% for December 31, 2013 and 4.5% for December 31, 2012.

PENSION_PLANS_AND_OTHER_POSTRE

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS	12 Months Ended
	Dec. 31, 2013
Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure Abstract	'
PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS	'
	17.        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 U.S. plan prior to 2013 and in all of 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. As of January 1, 2013, an increase in the number of inactive participants in our U.S. plan resulted in substantially all of the plan participants being inactive. Accordingly, we elected to begin amortizing the unrecognized cost of any retroactive amendments and actuarial gains and losses over the average remaining life expectancy of the inactive participants as opposed to the average remaining service period of the active participants.
	The following tables provide a reconciliation of the change in the projected benefit obligation, the change in plan assets and the net amount recognized in the Consolidated Balance Sheets for the years ended December 31, 2013 and 2012 (in millions):
			Dec. 31, 2013									Dec. 31, 2012
			U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
	Change in Projected Benefit Obligation
	Benefit obligation at beginning of period		$	1,187		$	554		$	1,741		$	1,105		$	503		$	1,608
	Service cost			9			6			15			9			5			14
	Interest cost			44			21			65			49			23			72
	Actuarial (gain) loss			-91			3			-88			111			34			145
	Currency (gain) loss			-			-8			-8			-			16			16
	Benefits paid			-79			-21			-100			-87			-23			-110
	Settlements / Curtailments			-			-7			-7			-			-6			-6
	Other			-			-2			-2			-			2			2
	Benefit obligation at end of period		$	1,070		$	546		$	1,616		$	1,187		$	554		$	1,741
	Change in Plan Assets
	Fair value of assets at beginning of period		$	856		$	404		$	1,260		$	812		$	360		$	1,172
	Actual return on plan assets			60			35			95			99			40			139
	Currency gain (loss)			-			-9			-9			-			12			12
	Company contributions			20			20			40			32			18			50
	Benefits paid			-79			-21			-100			-87			-23			-110
	Settlements/curtailments			-			-7			-7			-			-3			-3
	Other			1			-			1			-			-			-
	Fair value of assets at end of period		$	858		$	422		$	1,280		$	856		$	404		$	1,260
	Funded status		$	-212		$	-124		$	-336		$	-331		$	-150		$	-481
		Dec. 31, 2013									Dec. 31, 2012
		U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
	Amounts Recognized in the Consolidated Balance Sheets
	Prepaid pension cost	$	-		$	2		$	2		$	-		$	1		$	1
	Accrued pension cost - current		-			-2			-2			-			-2			-2
	Accrued pension cost - non-current		-212			-124			-336			-331			-149			-480
	Net amount recognized	$	-212		$	-124		$	-336		$	-331		$	-150		$	-481
	Amounts Recorded in Accumulated OCI
	Net actuarial loss	$	-289		$	-78		$	-367		$	-396		$	-95		$	-491
	The following table presents information about the projected benefit obligation, accumulated benefit obligation ("ABO") and plan assets of the Company's pension plans (in millions):
			Dec. 31, 2013									Dec. 31, 2012
			U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
	Plans with ABO in excess of fair value
		of plan assets:
	Projected benefit obligation		$	1,070		$	406		$	1,476		$	1,187		$	511		$	1,698
	Accumulated benefit obligation		$	1,070		$	392		$	1,462		$	1,187		$	487		$	1,674
	Fair value of plan assets		$	858		$	293		$	1,151		$	856		$	365		$	1,221
	Plans with fair value of assets in
		excess of ABO:
	Projected benefit obligation		$	-		$	132		$	132		$	-		$	43		$	43
	Accumulated benefit obligation		$	-		$	121		$	121		$	-		$	33		$	33
	Fair value of plan assets		$	-		$	129		$	129		$	-		$	39		$	39
	Total projected benefit obligation		$	1,070		$	538		$	1,608		$	1,187		$	554		$	1,741
	Total accumulated benefit obligation		$	1,070		$	513		$	1,583		$	1,187		$	520		$	1,707
	Total plan assets		$	858		$	422		$	1,280		$	856		$	404		$	1,260
	Weighted-Average Assumptions Used to Determine Benefit Obligation
	The following table presents weighted average assumptions used to determine benefit obligations at the measurement dates noted:
				Dec. 31,
				2013		2012
	United States Plans
		Discount rate		4.65%		3.80%
		Expected return on plan assets		7.00%		7.50%
	Non-United States Plans
		Discount rate		4.45%		4.10%
		Expected return on plan assets		6.38%		6.13%
		Rate of compensation increase		3.94%		3.50%
	Components of Net Periodic Pension Cost
	The following table presents the components of net periodic pension cost for the periods noted (in millions):
	Twelve Months Ended
	Dec. 31,
	2013			2012			2011
Service cost	$	15		$	15		$	14
Interest cost		65			72			78
Expected return on plan assets		-84			-86			-91
Amortization of actuarial loss		20			29			15
Net periodic benefit cost	$	16		$	30		$	16
Weighted-Average Assumptions Used to Determine Net Periodic Pension Cost
The following table presents weighted-average assumptions used to determine net periodic pension costs for the periods noted:
		Twelve Months Ended
		Dec. 31,
		2013		2012		2011
United States Plans
	Discount rate	3.80%		4.60%		5.30%
	Expected return on plan assets	7.50%		7.25%		7.75%
	Rate of compensation increase	N/A (a)		N/A (a)		N/A (a)
Non-United States Plans
	Discount rate	4.10%		4.65%		5.21%
	Expected return on plan assets	6.13%		7.23%		7.25%
	Rate of compensation increase	3.50%		3.75%		3.86%
(a) Not applicable due to changes in plan made on August 1, 2009 that were effective beginning January 1, 2010.
The expected return on plan assets assumption is derived by taking into consideration the target plan asset allocation, historical rates of return on those assets, projected future asset class returns and net outperformance of the market by active investment managers. An asset return model is used to develop an expected range of returns on plan investments over a 20 year period, with the expected rate of return selected from a best estimate range within the total range of projected results. The result is then rounded down to the nearest 25 basis points.
Accumulated Other Comprehensive Earnings (Deficit)
For the year ended December 31, 2013, the Company recorded other comprehensive income of $81 million, net of tax, to OCI. Of the $(367) million balance in OCI, $11 million is expected to be recognized as net periodic pension cost during 2014. For the year ended December 31, 2012, the Company recorded a charge of $44 million, net of tax, to OCI.
Items Measured at Fair Value
The Company classifies and discloses pension plan assets in one of the following three categories:
Level 1: Quoted market prices in active markets for identical assets.
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.
Plan Assets
The following table summarizes the fair values, and levels within the fair value hierarchy in which the fair value measurements fall under United States pension plan assets at December 31, 2013 and 2012 (in millions):
			2013
Asset Category			Level 1			Level 2			Level 3			Total
Equity
	Domestic actively managed		$	100		$	38		$	-		$	138
	Domestic passive index			-			58			-			58
	International actively managed			121			-			-			121
	International passive index			-			25			-			25
Fixed income and cash equivalents
	Short-term debt			-			27			-			27
	Corporate bonds			240			27			-			267
	Government debt			91			-			-			91
Real estate investment trusts				26			-			-			26
Absolute return strategies				-			80			-			80
Real assets				-			25			-			25
Total United States plan assets			$	578		$	280		$	-		$	858
			2012
Asset Category			Level 1			Level 2			Level 3			Total
Equity
	Domestic actively managed		$	129		$	-		$	-		$	129
	Domestic passive index			-			55			-			55
	International actively managed			122			-			-			122
	International passive index			-			27			-			27
Fixed income and cash equivalents
	Cash and cash equivalents			1			-			-			1
	Short-term debt			-			24			-			24
	Corporate bonds			246			28			-			274
	Government debt			94			-			-			94
Real estate investment trusts				27			-			-			27
Absolute return strategies				-			76			-			76
Real assets				-			27			-			27
Total United States plan assets			$	619		$	237		$	-		$	856
The above asset allocations are in compliance with the United States pension plan's current investment policy. Level 3 assets include global long/short, event driven, diversified arbitrage, distressed securities, and other multi-strategy hedge fund vehicles. Some securities in these assets are not readily marketable. The fair value of these level 3 assets are determined by a mark to market valuation based on price information, volatility statistics, credit data, liquidity statistics, various risk assessments and other factors.
The following table summarizes the fair values, and levels within the fair value hierarchy in which the fair value measurements fall under non-United States pension plan assets at December 31, 2013 and 2012 (in millions):
			2013
Asset Category			Level 1			Level 2			Level 3			Total
Equity
	Domestic actively managed		$	30		$	4		$	-		$	34
	Domestic passive index			-			4			-			4
	International actively managed			-			61			-			61
	International passive index			2			26			-			28
Fixed income and cash equivalents
	Cash and cash equivalents			3			22			-			25
	Corporate bonds			-			162			-			162
	Government Debt			-			7			-			7
Absolute return strategies				-			101			-			101
Total non-United States plan assets			$	35		$	387		$	-		$	422
			2012
Asset Category			Level 1			Level 2			Level 3			Total
Equity
	Domestic actively managed		$	25		$	4		$	-		$	29
	Domestic passive index			-			4			-			4
	International actively managed			-			50			-			50
	International passive index			8			23			-			31
Fixed income and cash equivalents
	Cash and cash equivalents			3			26			-			29
	Corporate bonds			-			166			-			166
	Government Debt			-			7			-			7
Absolute return strategies				-			88			-			88
Total non-United States plan assets			$	36		$	368		$	-		$	404
Investment Strategy
The current investment policy for the United States pension plan is to have 38% of assets invested in equities, 3% in real estate, 6% in real assets, and 47% in intermediate and long-term fixed income securities, and 6% in absolute return strategies.  Assets are rebalanced periodically to conform to policy tolerances. The Company actively evaluates the reasonableness of its asset mix given changes in the projected benefit obligation and market dynamics.
Estimated Future Benefit Payments
The following table shows estimated future benefit payments from the Company's pension plans (in millions):
Year	Estimated Benefit Payments
2014	$	98
2015	$	100
2016	$	102
2017	$	102
2018	$	101
2019-2023	$	503
Contributions
Owens Corning expects to contribute $35 million in cash to the United States pension plan during 2014 and another $20 million to non-United States plans. Actual contributions to the plans may change as a result of a variety of factors, including changes in laws that impact funding requirements.
Defined Contribution Plans
The Company sponsors two defined contribution plans which are available to substantially all United States employees. The Company matches a percentage of employee contributions up to a maximum level and contributes 2% of an employee's wages regardless of employee contributions. The Company recognized expense of $29 million, $30 million and $30 million during the years ended December 31, 2013, 2012 and 2011, respectively, related to these plans.
18.       POSTEMPLOYMENT AND POSTRETIREMENT BENEFITS OTHER THAN PENSIONS
The Company maintains health care 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.
Employees become eligible to participate in the United States health care plans upon retirement if they have accumulated 10 years of service after age 45, 48 or 50, depending on the category of employee. For employees hired after December 31, 2005, the Company does not provide subsidized retiree health care. Some of the plans are contributory, with some retiree contributions adjusted annually. The Company has reserved the right to change or eliminate these benefit plans subject to the terms of collective bargaining agreements.
In the fourth quarter of 2011, the Company ratified certain plan amendments which reduced the projected benefit obligation at year end by approximately $30 million. The Company implemented an Employee Group Waiver Plan (EGWP) effective January 1, 2013 to manage its prescription drug benefits for certain retiree groups. The Company also negotiated with certain unionized employees to increase the eligibility age for retiree medical benefits and to eliminate the post-65 retiree reimbursement account benefit for employees retiring on or after January 1, 2014.
The following table provides a reconciliation of the change in the projected benefit obligation and the net amount recognized in the Consolidated Balance Sheets for the years ended December 31, 2013 and 2012 (in millions):
		Dec. 31, 2013									Dec. 31, 2012
		U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
Change in Projected Benefit Obligation
Benefit obligation at beginning of period		$	252		$	21		$	273		$	244		$	20		$	264
Service cost			2			1			3			3			-			3
Interest cost			8			1			9			10			1			11
Actuarial loss (gain)			-18			-2			-20			17			-			17
Currency loss (gain)			-			-			-			-			1			1
Plan amendments			-			-			-			-3			-			-3
Benefits paid			-18			-2			-20			-19			-1			-20
Other			2			-3			-1			-			-			-
Benefit obligation at end of period		$	228		$	16		$	244		$	252		$	21		$	273
Funded status		$	-228		$	-16		$	-244		$	-252		$	-21		$	-273
Amounts Recognized in the Consolidated
	Balance Sheets
Accrued benefit obligation - current		$	-20		$	-		$	-20		$	-20		$	-1		$	-21
Accrued benefit obligation - non-current			-208			-16			-224			-232			-20			-252
Net amount recognized		$	-228		$	-16		$	-244		$	-252		$	-21		$	-273
Amounts Recorded in Accumulated OCI
Net actuarial gain		$	21		$	6		$	27		$	4		$	5		$	9
Net prior service credit			24			-			24			28			-			28
Net amount recognized		$	45		$	6		$	51		$	32		$	5		$	37
Weighted-Average Assumptions Used to Determine Benefit Obligations
The following table presents the discount rates used to determine the benefit obligations:
	Dec. 31,
	2013			2012
United States plans		4.35%			3.50%
Non-United States plans		4.45%			3.80%
Components of Net Periodic Postretirement Benefit Cost
The following table presents the components of net periodic postretirement benefit cost (in millions):
	Twelve Months Ended
	Dec. 31,
	2013			2012			2011
Service cost	$	3		$	3		$	3
Interest cost		9			11			14
Amortization of prior service cost		-4			-4			-
Amortization of actuarial gain		-1			-3			-1
Curtailment gain		-			-1			-2
Net periodic postretirement benefit cost	$	7		$	6		$	14
Weighted-Average Assumptions Used to Determine Net Periodic Postretirement Benefit Cost
The following table presents the discount rates used to determine net periodic postretirement benefit cost:
	Twelve Months Ended
	Dec. 31,
	2013			2012			2011
United States plans		3.50%			4.35%			5.05%
Non-United States plans		3.80%			4.10%			4.80%
The following table presents health care cost trend rates used to determine net periodic postretirement benefit cost, as well as information regarding the ultimate rate and the year in which their ultimate rate is reached:
		Twelve Months Ended
		Dec. 31,
		2013			2012			2011
United States plans
	Initial rate at end of year		7.00%			7.00%			7.00%
	Ultimate rate		5.00%			5.00%			5.00%
	Year in which ultimate rate is reached		2023			2022			2021
Non-United States plans
	Initial rate at end of year		6.23%			6.50%			6.80%
	Ultimate rate		4.79%			4.80%			4.80%
	Year in which ultimate rate is reached		2019			2019			2019
The health care cost trend rate assumption can have a significant effect on the amounts reported. To illustrate, a one-percentage point change in the December 31, 2013 assumed health care cost trend rate would have the following effects (in millions):
		1-Percentage Point
		Increase			Decrease
Increase (decrease) in total service cost and interest cost components of net
	periodic postretirement benefit cost	$	1		$	-
Increase (decrease) of accumulated postretirement benefit obligation		$	9		$	-8
Accumulated Other Comprehensive Earnings (Deficit)
For the year ended December 31, 2013, the Company recorded other comprehensive income of $7 million, net of tax, to OCI. Approximately $6 million of the $51 million balance in accumulated OCI is expected to be recognized as net periodic postretirement benefit during 2014. For the year ended December 31, 2012, the Company recorded other comprehensive income of $14 million, net of tax, to OCI.
Estimated Future Benefit Payments
The following table shows estimated future benefit payments from the Company's postretirement benefit plans (in millions):
Year	Estimated Benefit Payments
2014	$	21
2015	$	21
2016	$	21
2017	$	21
2018	$	20
2019-2023	$	92
Postemployment Benefits
The Company may also provide benefits to former or inactive employees after employment but before retirement under certain conditions. These benefits include continuation of benefits such as health care and life insurance coverage. The accrued postemployment benefits liability at December 31, 2013 and 2012 was $18 million and $22 million, respectively. The net periodic postemployment benefit expense was $1 million for each of the years ended December 31, 2013, 2012 and 2011, respectively.

CONTINGENT_LIABILITIES_AND_OTH

CONTINGENT LIABILITIES AND OTHER MATTERS	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
CONTINGENT LIABILITIES AND OTHER MATTERS TEXT BLOCK	'
	19.       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 along 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 know claim, 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 has nothing to report under this item.
	Environmental Matters
	We have 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. We have also been deemed a PRP under similar state or local laws and in other instances other PRPs have brought suits against us as a PRP for contribution under such federal, state, or local laws. At December 31, 2013, we had environmental remediation liabilities as a PRP at 20 sites where we have a continuing legal obligation to either complete remedial actions or contribute to the completion of remedial actions as part of a group of PRPs. For these sites we estimate a reserve to reflect environmental liabilities that have been asserted or are probable of assertion, in which liabilities are probable and reasonably estimable. At December 31, 2013, our reserve for such liabilities was $5 million.
	Kearny, New Jersey Manufacturing Facility
	During the week of October 29, 2012, the Company experienced a flood at its Kearny, New Jersey manufacturing facility as a result of Hurricane Sandy.  This facility is insured for property damage and business interruption losses related to such events, subject to deductibles and policy limits.  In December of 2013, the Company settled its insurance claims for a net $78 million.  Our Roofing facility returned to full operating capacity in the third quarter of 2013 and the Company anticipates an additional $6 million in charges to be taken in 2014 related to final repairs at our Asphalt facility. The proceeds received on settlement will substantially cover all costs/losses incurred.
	For the year ended December 31, 2013, the Company incurred losses related to clean up activities and business interruption in the amount of $27 million reported in Costs of Sales, and $16 million reported in Other expenses (income), net, on the Consolidated Statements of Earnings.  These expenses were more than offset by the $58 million of insurance proceeds recorded in Other expenses (income), net on the Consolidated Statements of Earnings.
	For the year ended December 31, 2012, the Company incurred losses related to clean up activities and business interruption in the amount of $6 million reported in Costs of Sales, and $23 million reported in Other expenses (income), net, on the Consolidated Statements of Earnings, partially offset by $20 million of insurance proceeds recorded in Other expenses (income), net on the Consolidated Statements of Earnings.

STOCK_COMPENSATION

STOCK COMPENSATION	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
STOCK COMPENSATION	'
	20.       STOCK COMPENSATION
	2013 Stock Plan
	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 as of April 18, 2013. 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 December 31, 2013 the number of shares remaining available under the 2013 Stock Plan for all stock awards was 3.4 million.
	The following table summarizes the Company's stock option activity:
			Twelve Months Ended						Twelve Months Ended					Twelve Months Ended
			Dec. 31, 2013						Dec. 31, 2012					Dec. 31, 2011
			Number of Options		Weighted-Average Exercise Price				Number of Options		Weighted-Average Exercise Price			Number of Options		Weighted-Average Exercise Price
	Beginning Balance		3,025,220		$	27.78			3,293,545		$	26.26		3,397,858		$	25.06
	Granted		329,800			42.16			409,700			33.73		412,200			33.98
	Exercised		-549,800			26.88			-520,120			22.65		-374,738			25.78
	Forfeited		-56,500			34.58			-157,905			28.48		-141,775			21.19
	Ending Balance		2,748,720		$	29.55			3,025,220		$	27.78		3,293,545		$	26.26
	The following table summarizes information about the Company's options outstanding and exercisable:
	Options Outstanding											Options Exercisable
						Weighted-Average						Number Exercisable at Dec. 31, 2013		Weighted-Average
	Range of Exercise Prices		Options Outstanding			Remaining Contractual Life			Exercise Price						Remaining Contractual Life		Exercise Price
	$13.89 - $42.16		2,748,720			5.35		$	29.55			1,939,145		4.2		$	26.75
	Restricted Stock Awards and Restricted Stock Units
	The Company has granted restricted stock awards and restricted stock units (collectively referred to as “restricted stock”) under its stockholder approved stock plans. 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 2015.
	During the years ended December 31, 2013, 2012 and 2011, the Company recognized expense of $16 million, $15 million and $13 million respectively, related to the Company's restricted stock. As of December 31, 2013, there was $25 million of total unrecognized compensation cost related to restricted stock. That cost is expected to be recognized over a weighted-average period of 2.59 years. The total grant date fair value of shares vested during the years ended December 31, 2013, 2012 and 2011, was $16 million, $12 million and $9 million, respectively.
	A summary of the status of the Company's plans that had restricted stock issued as of December 31, 2013, 2012 and 2011 and changes during the twelve months ended December 31, 2013, 2012 and 2011 are presented below:
		Twelve Months Ended					Twelve Months Ended					Twelve Months Ended
		Dec. 31, 2013					Dec. 31, 2012					Dec. 31, 2011
		Number of Shares		Weighted-Average Grant Date Fair Value			Number of Shares		Weighted-Average Grant Date Fair Value			Number of Shares	Weighted-Average Grant Date Fair Value
	Beginning Balance	1,875,065		$	27.14		1,941,742		$	23.83		1,987,705	$	19.74
	Granted	512,398			41.01		638,618			33.43		565,982		33.47
	Vested	-573,920			26		-544,528			22.38		-476,650		18.82
	Forfeited	-77,719			34.62		-160,767			28.36		-135,295		21.67
	Ending Balance	1,735,824		$	32.49		1,875,065		$	27.14		1,941,742	$	23.83
	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. Outstanding grants issued in 2013 will be fully settled in stock and outstanding grants issued in 2011 and 2012 will be settled 50 percent in stock and 50 percent in cash. The amount of the stock and/or cash ultimately distributed is contingent on meeting various company or stockholder return goals.
	Compensation expense for PSUs settled in stock is measured based on the grant date fair value and is recognized on a straight-line basis over the vesting period. Compensation expense for PSUs settled in cash is measured based on the fair value at the end of each quarter and is recognized on a straight-line basis over the vesting period. Vesting will be pro-rated based on the number of full months employed during the performance period in the case of death, disability, change in control or involuntary termination, and pro-rated awards earned will be paid at the end of the three-year period.
	During 2013, 2012, and 2011, the Company granted PSUs. The 2013, 2012, and 2011 grants vest after a three-year period based on the Company's total stockholder return relative to the performance of the components of the S&P 500 Index for the respective three-year period. The amount of PSUs earned will vary from 0% to 200% of PSUs awarded depending on the relative stockholder return performance.
	For all PSUs, respectively, during the period ended December 31, 2013, 2012 and 2011, the Company recognized expense of $7 million, $13 million and $7 million. As of December 31, 2013, there was $11 million of total unrecognized compensation cost related to PSUs. That cost is expected to be recognized over a weighted-average period of 1.7 years. The total grant date fair value of shares vested during the years ended December 31, 2013, 2012 and 2011, was $9 million, $11 million and $19 million, respectively. P1Y8M12D
	2013 Grant
	For the 2013 grant, the fair value of the portion of PSUs settled in stock was estimated at the grant date using a Monte Carlo simulation that used various assumptions that include expected volatility of 36.7% ,a risk free interest rate of 0.4% and an expected term of 2.9 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 grant date. The expected term represents the period from the grant date to the end of the three-year performance period. P2Y10M24D
	2012 Grant
	For the 2012 grant, the portion of the PSUs settled in cash will be revalued every reporting period until the award is fully vested. As a result, compensation expense recognized will be adjusted and previous surplus compensation expense recognized will be reversed or additional expense will be recognized. For the period ended December 31, 2012, the Company estimated the fair value of the cash PSUs granted using a Monte Carlo simulation that used various assumptions that include expected volatility of 25.73%, a risk free rate of 0.2% and an expected term of 1.00 year. 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 revaluation. The expected term represents the period beginning December 31, 2013 to the end of the three-year performance period. P1Y0M0D
	For the 2012 grant, the fair value of the portion of PSUs settled in stock was estimated at the grant date using a Monte Carlo simulation that used various assumptions that include expected volatility of 48.2% ,a risk free interest rate of 0.3% and an expected term of 2.91 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 grant date. The expected term represents the period from the grant date to the end of the three-year performance period. P2Y10M28D
	2011 Grant
	For the 2011 grant, the portion of the PSUs settled in cash is revalued every reporting period until the award is fully vested. As a result, compensation expense recognized will be adjusted and previous surplus compensation expense recognized will be reversed or additional expense will be recognized. For the period ended December 31, 2012, the Company estimated the fair value of the PSUs settled in cash using a Monte Carlo simulation that used various assumptions that include expected volatility of 24.84% ,a risk-free interest rate of 0% and an expected term of 0 years, which is the remaining life of the grant. 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 revaluation. The expected term represents the period beginning December 31, 2013 to the end of the three-year performance period. P0Y0M0D
	For the 2011 grant, the fair value of the portion of PSUs settled in stock was estimated at the grant date using a Monte Carlo simulation that used various assumptions that include expected volatility of 57.2% ,a risk-free interest rate of 1.1% and an expected term of 2.9 years, which was the remaining life of the grant. 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 grant date. The expected term represents the period from the grant date to the end of the three-year performance period.
		Twelve Months Ended					Twelve Months Ended					Twelve Months Ended
		Dec. 31, 2013					Dec. 31, 2012					Dec. 31, 2011
		Number of PSUs		Weighted-Average Grant Date Fair Value			Number of PSUs		Weighted-Average Grant Date Fair Value			Number of PSUs	Weighted-Average Grant Date Fair Value
	Beginning Balance	412,910		$	49.14		508,616		$	42.24		754,603	$	19.66
	Granted	207,050			56.71		256,400			47.97		354,564		48.61
	Vested	-167,610			48.61		-260,580			36.52		-526,608		16.45
	Forfeited/cancelled	-41,850			50.39		-91,526			43.45		-73,943		25.98
	Ending Balance	410,500		$	53.04		412,910		$	49.14		508,616	$	42.24
	2013 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 year ended December 31, 2013, the Company recognized expense of $1 million, related to the company's ESPP. For the year ended December 31, 2013, our employees purchased 0.1 million shares at an average price of $33.29. Under the outstanding ESPP as of February 9, 2014, employees have contributed $1 million to purchase shares at 85% of the stock's fair market value on the lower of the December 2nd, 2013 or May 31st 2014 stock price for the current purchase period. The company has $1 million of total unrecognized compensation cost related to the ESPP.

CHANGES_IN_ACCUMULATED_OTHER_C

CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME	12 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income Loss Net Of Tax Abstract	'
ComprehensiveIncomeNoteTextBlock	'
	21.       ACCUMULATED OTHER COMPREHENSIVE INCOME
	A summary of the balances within each classification of accumulated OCI (deficit) as of December 31, 2013 and 2012
			Cash Flow Hedge Activity		Defined Benefit Pension Plan Activity		OCI Valuation Allowance activity		Foreign Currency Translation Adjustment		Total
	Balance as of December 31, 2011, net of tax	$	-3	$	-226	$	-111	$	25	$	-315
	Amounts classified into AOCI, net of tax	$	2	$	-140	$	-3	$	5	$	-136
	Amounts reclassified from AOCI, net of tax		0		87		0		0		87
	Change in AOCI, net of tax		2		-53		-3		5		-49
	Balance as of December 31, 2012, net of tax	$	-1	$	-279	$	-114	$	30	$	-364
	Amounts classified into AOCI, net of tax	$	1	$	15	$	-1	$	-28	$	-13
	Amounts reclassified from AOCI, net of tax		0		80		0		0		80
	Change in AOCI, net of tax		1		95		-1		-28		67
	Balance as of December 31, 2013, net of tax	$	0	$	-184	$	-115	$	2	$	-297

WARRANTS

WARRANTS	12 Months Ended
	Dec. 31, 2013
Warrants and Rights Note Disclosure [Abstract]	'
Warrants or Rights Outstanding [Text Block]	'
	22.       WARRANTS
	The Company issued 17.5 million Series A warrants (representing the right to purchase one share of the Company's common stock for $43.00) and 7.8 million Series B warrants (representing the right to purchase one share of the Company's common stock for $45.25) on October 31, 2006, all of which expired on October 31, 2013 and are no longer outstanding as of December 31, 2013.

EARNINGS_LOSS_PER_SHARE

EARNINGS (LOSS) PER SHARE	12 Months Ended
	Dec. 31, 2013
Earnings Per Share Abstract	'
EARNINGS (LOSS) PER SHARE	'
	23. EARNINGS PER SHARE
	The following table summarizes the number of shares outstanding as well as our basic and diluted earnings per share for the years ended December 31, 2013, 2012 and 2011 (in millions, except per share amounts):
				Twelve Months Ended
				Dec. 31,
			2013		2012		2011
	Net earnings (loss) attributable to Owens Corning		$	204	$	-19	$	276
	Weighted-average number of shares outstanding used for
		basic earnings per share		118.2		119.4		122.5
	Non-vested restricted and performance shares			0.4		-		0.7
	Options to purchase common stock			0.5		-		0.3
	Weighted-average number of shares outstanding and common
		equivalent shares used for diluted earnings per share		119.1		119.4		123.5
	Earnings (loss) per common share attributable to Owens Corning common
		stockholders:
		Basic	$	1.73	$	-0.16	$	2.25
		Diluted	$	1.71	$	-0.16	$	2.23

FAIR_VALUE_MEASUREMENT

FAIR VALUE MEASUREMENT	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Disclosures [Text Block]	'
	24.       FAIR VALUE MEASUREMENT
	Items Measured at Fair Value
	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.
	The following table summarizes the fair values, and levels within the fair value hierarchy in which the fair value measurements fall, for assets and liabilities measured on a recurring basis as of December 31, 2013 (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:
	Cash equivalents	$	20	$	20	$	-	$	-
	Term deposits		2		2
	Derivative assets		1		-		1		-
	Total assets	$	23	$	22	$	1	$	-
	Liabilities:
	Derivative liabilities	$	-4	$	-	$	-4	$	-
	Total liabilities	$	-4	$	-	$	-4	$	-
	The following table summarizes the fair values, and levels within the fair value hierarchy in which the fair value measurements fall, for assets and liabilities measured on a recurring basis as of December 31, 2012 (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:
	Cash equivalents	$	1	$	1	$	-	$	-
	Term deposits		1		1		-
	Derivative assets		1		-		1		-
	Total assets	$	3	$	2	$	1	$	-
	Liabilities:
	Derivative liabilities	$	-4	$	-	$	-4	$	-
	Total liabilities	$	-4	$	-	$	-4	$	-
	Cash equivalents, by their nature, utilize Level 1 inputs in determining fair value. The Company measures the value of its natural gas hedge contracts and foreign currency forward contracts using Level 2 inputs. The fair value of the Company's natural gas hedges 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.

INCOME_TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
INCOME TAXES	'
	25. INCOME TAXES
				Twelve Months Ended
				Dec. 31,
				2013			2012			2011
	Earnings before taxes:
	United States			$	196		$	31		$	202
	Foreign				77			-71			151
		Total		$	273		$	-40		$	353
	Income tax expense (benefit):
	Current
		United States		$	-2		$	1		$	-14
		State and local			-2			-2			2
		Foreign			30			20			28
			Total current		26			19			16
	Deferred
		United States			56			-22			61
		State and local			2			2			7
		Foreign			-16			-27			-10
			Total deferred		42			-47			58
	Total income tax expense (benefit)			$	68		$	-28		$	74
	The reconciliation between the United States federal statutory rate and the Company's effective income tax rate from continuing operations is:
		Twelve Months Ended
		Dec. 31,
		2013		2012		2011
	United States federal statutory rate	35	%	-35	%	35	%
	State and local income taxes, net of federal tax benefit	2		-5		2
	Foreign tax rate differential	-11		-60		-10
	US tax expense/benefit on foreign earnings/loss	-2		-62		-1
	Valuation allowance	17		127		2
	Loss on liquidation	-10		-		-
	Uncertain tax positions and settlements	-1		-2		-3
	Other, net	-5		-33		-4
	Effective tax rate	25	%	-70	%	21	%
	The cumulative temporary differences giving rise to the deferred tax assets and liabilities at December 31, 2013 and 2012 are as follows (in millions):
			2013						2012
			Deferred Tax Assets			Deferred Tax Liabilities			Deferred Tax Assets			Deferred Tax Liabilities
	Other employee benefits		$	153		$	-		$	160		$	-
	Pension plans			115			-			161			-
	Operating loss carryforwards			1,117			-			1,080			-
	Depreciation			-			338			-			332
	Amortization			-			370			-			373
	State and local taxes			6			-			5			-
	Other			135			-			173			-
		Subtotal		1,526			708			1,579			705
	Valuation allowances			-270			-			-228			-
	Total deferred taxes		$	1,256		$	708		$	1,351		$	705
	The Company had current deferred tax assets of $138 million and $80 million which are included in other current assets in the
	Consolidated Balance Sheets as of December 31, 2013 and 2012, respectively.
	At December 31, 2013, the Company had federal, state and foreign net operating loss carryforwards of $2.2 billion, $2.5 billion and $944 million, respectively. In order to fully utilize our operating loss and tax credit carryforwards, the Company will need to generate federal, state, and foreign earnings before taxes of approximately $2.7 billion, $2.8 billion, and $944 million, respectively. Certain of these loss carryforwards are subject to limitation as a result of the changes of control that resulted from the Company's emergence from bankruptcy in 2006 and the acquisition of certain foreign entities in 2007. However, the Company believes that these limitations on its loss carryforwards will not result in a forfeiture of any of the carryforwards.
	Deferred income taxes are provided for temporary differences between amounts of assets and liabilities for financial reporting purposes and the basis of such assets and liabilities as measured under enacted tax laws and regulations, as well as NOLs, tax credit and other carryforwards. A valuation allowance will be recorded to reduce deferred tax assets if, based on all available evidence, it is considered more likely than not that some portion or all of the recorded deferred tax assets will not be realized in future periods. To the extent the reversal of deferred tax liabilities is relied upon in our assessment of the realizability of deferred tax assets, they will reverse in the same period and jurisdiction as the temporary differences giving rise to the deferred tax assets. As of December 31, 2013, the Company had federal, state, and foreign net deferred tax assets before valuation allowances of $485 million, $59 million, and $274 million, respectively.
	The valuation allowance of $270 million as of December 31, 2013 related to tax assets of $12 million and $258 million for certain state and foreign jurisdictions, respectively. The valuation allowance of $228 million as of December 31, 2012 related to tax assets of $14 million and $214 million for certain state and foreign jurisdictions, respectively.
	The Company, or one of its subsidiaries, files income tax returns in the United States and other foreign jurisdictions. The Company is no longer subject to U.S. federal tax examinations for years before 2008 or state and foreign examinations for years before 2001. Due to the potential for resolution of federal, state and foreign examinations, and the expiration of various statutes of limitation, it is reasonably possible that the gross unrecognized tax benefits balance may change within the next 12 months by a range of zero to $49 million.
	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):
			Twelve Months Ended
			Dec. 31,
			2013			2012			2011
	Balance at beginning of period		$	161		$	170		$	210
	Tax positions related to the current year
		Gross additions		2			12			8
	Tax positions related to prior years
		Gross additions		4			7			6
		Gross reductions		-1			-14			-46
	Settlements			-3			-13			-7
Lapses on statutes of limitations			-8			-1			-1
Balance at end of period		$	155		$	161		$	170
The Company classifies all interest and penalties as income tax expense. As of December 31, 2013, 2012 and 2011, the Company recognized $6 million, $10 million and $13 million respectively, in liabilities for tax related interest and penalties on its Consolidated Balance Sheets and $(3) million, $(3) million and $(15) million, respectively, of interest and penalty expense on its Consolidated Statements of Earnings (Loss). If these unrecognized tax benefits were to be recognized as of December 31, 2013, the Company's income tax expense would decrease by about $128 million.

QUARTERLY_FINANCIAL_INFORMATIO

QUARTERLY FINANCIAL INFORMATION	12 Months Ended
	Dec. 31, 2013
Selected Quarterly Financial Information [Abstract]	'
Quarterly Financial Information [Text Block]	'
	26. QUARTERLY FINANCIAL INFORMATION (unaudited)
	Select quarterly financial information is presented in the tables below for the quarterly periods of 2013 and 2012, respectively (in millions, except per share amounts):
			Quarter
	2013		First		Second		Third		Fourth
	Net sales		$	1,350	$	1,347	$	1,320	$	1,278
	Cost of sales			1,137		1,080		1,067		1,045
	Gross margin			213		267		253		233
	Earnings before interest and taxes			57		118		106		104
	Interest expense, net			29		29		29		25
	Income tax expense (benefit)			6		39		26		-3
	Net earnings attributable to Owens Corning		$	22	$	49	$	51	$	82
	BASIC EARNINGS PER COMMON SHARE
		ATTRIBUTABLE TO OWENS CORNING
		COMMON STOCKHOLDERS	$	0.19	$	0.41	$	0.43	$	0.7
	DILUTED EARNINGS PER COMMON SHARE
		ATTRIBUTABLE TO OWENS CORNING
		COMMON STOCKHOLDERS	$	0.18	$	0.41	$	0.43	$	0.69
			Quarter
	2012		First		Second		Third		Fourth
	Net sales		$	1,346	$	1,391	$	1,276	$	1,159
	Cost of sales			1,160		1,152		1,074		989
	Gross margin			186		239		202		170
	Earnings (loss) before interest and taxes			-12		85		59		16
	Interest expense, net			28		28		29		29
	Income tax expense			5		17		-14		-36
	Net earnings (loss) attributable to Owens Corning		$	-46	$	39	$	44	$	-56
	BASIC EARNINGS (LOSS) PER COMMON SHARE
		ATTRIBUTABLE TO OWENS CORNING
		COMMON STOCKHOLDERS	$	-0.38	$	0.32	$	0.37	$	-0.47
	DILUTED EARNINGS (LOSS) PER COMMON SHARE
		ATTRIBUTABLE TO OWENS CORNING
		COMMON STOCKHOLDERS	$	-0.38	$	0.32	$	0.37	$	-0.47
	During the first, second, third and fourth quarter 2012, the Company recorded additional pre-tax income (expense) of ($4) million ($3 million after tax expense), $1 million ($1 million after tax expense), ($7) million ($3 million after tax expense), and ($3) million ($2 million after tax expense) respectively; related to prior periods. The effect was not material to previously issued financial statements.

CONDENSED_CONSOLIDATED_FINANCI

CONDENSED CONSOLIDATED FINANCIAL STATEMENTS	12 Months Ended
	Dec. 31, 2013																		Dec. 31, 2012																		Dec. 31, 2011
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'																		'																		'
Condensed Financial Information of Parent Company Only Disclosure [Text Block]	'																		'																		'
	27.       CONDENSED CONSOLIDATING FINANCIAL STATEMENTS																		OWENS CORNING AND SUBSIDIARIES																		OWENS CORNING AND SUBSIDIARIES
																			CONDENSED CONSOLIDATING STATEMENT OF EARNINGS																		CONDENSED CONSOLIDATING STATEMENT OF EARNINGS
	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.																		FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2012																		FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2011
	Guarantor and Nonguarantor Financial Statements																		(in millions)																		(in millions)
	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																					Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated						Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	CONDENSED CONSOLIDATING STATEMENT OF EARNINGS (LOSS)																		NET SALES			$	-		$	3,616		$	1,932		$	-376		$	5,172		NET SALES			$	-		$	3,641		$	2,018		$	-324		$	5,335
	FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2013																		COST OF SALES				-9			3,015			1,745			-376			4,375		COST OF SALES				-23			3,015			1,639			-324			4,307
	(in millions)																				Gross margin		9			601			187			-			797				Gross margin		23			626			379			-			1,028
																			OPERATING EXPENSES																		OPERATING EXPENSES
				Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated				Marketing and administrative expenses			112			259			138			-			509			Marketing and administrative expenses			67			314			144			-			525
	NET SALES			$	-		$	3,730		$	1,988		$	-423		$	5,295			Science and technology expenses			-			61			18			-			79			Science and technology expenses			-			61			16			-			77
	COST OF SALES				-10			3,085			1,677			-423			4,329			Charges related to cost reduction actions			-						51			-			51			Other expenses (income), net			-88			15			38			-			-35
			Gross margin		10			645			311			-			966			Other expenses (income)			-37			24			23			-			10				Total operating expenses		-21			390			198			-			567
	OPERATING EXPENSES																				Total operating expenses		75			344			230			-			649		EARNINGS BEFORE INTEREST AND TAXES				44			236			181			-			461
		Marketing and administrative expenses			123			267			140			-			530		EARNINGS BEFORE INTEREST AND TAXES				-66			257			-43			-			148		Interest expense, net				105			-3			6			-			108
		Science and technology expenses			-			58			19			-			77		Interest expense, net				102			2			10			-			114		EARNINGS (LOSS) BEFORE TAXES				-61			239			175			-			353
		Charges related to cost reduction actions			-			-			8			-			8		Loss on extinguishment of debt				74												74		Less: Income tax expense (benefit)				-23			72			25			-			74
		Other expenses (income), net			-27			-39			32			-			-34		EARNINGS (LOSS) BEFORE TAXES				-242			255			-53			-			-40		EARNINGS (LOSS) BEFORE EQUITY IN NET EARNINGS
			Total operating expenses		96			286			199			-			581		Less: Income tax expense (benefit)				-92			64			-			-			-28			OF SUBSIDIARIES AND AFFILIATES			-38			167			150			-			279
	EARNINGS BEFORE INTEREST AND TAXES				-86			359			112			-			385		EARNINGS (LOSS) BEFORE EQUITY IN NET																		Equity in net earnings of subsidiaries				314			149			-			-463			-
	Interest expense, net				104			2			6			-			112			EARNINGS (LOSS) OF SUBSIDIARIES AND																	Equity in net earnings (loss) of affiliates				-			-2			4			-			2
	EARNINGS (LOSS) BEFORE TAXES				-190			357			106			-			273			AFFILIATES			-150			191			-53			-			-12		NET EARNINGS (LOSS)				276			314			154			-463			281
	Less: Income tax expense (benefit)				-72			121			19			-			68		Equity in net earnings of subsidiaries				131			-55			-			-76			-		Less: Net earnings attributable to noncontrolling interest				-			-			5			-			5
	EARNINGS (LOSS) BEFORE EQUITY IN NET EARNINGS																		Equity in net earnings (loss) of affiliates				-			-5			1			-			-4		NET EARNINGS (LOSS) ATTRIBUTABLE TO
		OF SUBSIDIARIES AND AFFILIATES			-118			236			87			-			205		NET EARNINGS (LOSS)				-19			131			-52			-76			-16			OWENS CORNING		$	276		$	314		$	149		$	-463		$	276
	Equity in net earnings of subsidiaries				322			86			-			-408			-		Less: Net earnings attributable to noncontrolling interest				-			-			3			-			3		OWENS CORNING AND SUBSIDIARIES
	Equity in net earnings of affiliates				-			-			-			-	1		-		NET EARNINGS (LOSS) ATTRIBUTABLE TO																		CONSOLIDATING STATEMENT OF COMPREHENSIVE EARNINGS
	NET EARNINGS (LOSS)				204			322			87			-408			205			OWENS CORNING		$	-19		$	131		$	-55		$	-76		$	-19		FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2011
	Less: Net earnings attributable to noncontrolling interests				-			-			1			-			1		OWENS CORNING AND SUBSIDIARIES																		(in millions)
	NET EARNINGS (LOSS) ATTRIBUTABLE TO																		CONSOLIDATING STATEMENT OF COMPREHENSIVE EARNINGS
		OWENS CORNING		$	204		$	322		$	86		$	-408		$	204		FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2012																					Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	OWENS CORNING AND SUBSIDIARIES																		(in millions)																		NET EARNINGS (LOSS)			$	276		$	314		$	154		$	-463		$	281
	CONSOLIDATING STATEMENT OF COMPREHENSIVE EARNINGS (LOSS)																																				Currency translation adjustment				-39			-			-			-			-39
	FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2013																					Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			Pension and other postretirement adjustment (net of tax)				-80			-			-			-			-80
	(in millions)																		NET EARNINGS (LOSS)			$	-19		$	131		$	-52		$	-76		$	-16		Deferred income (loss) on hedging (net of tax)				-2			-			-			-			-2
																			Currency translation adjustment				5			-			-			-			5		COMPREHENSIVE EARNINGS (LOSS)				155			314			154			-463			160
				Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			Pension and other postretirement adjustment (net of tax)				-56			-			-			-			-56		Less: Comprehensive earnings attributable to noncontrolling interests				-			-			5			-			5
	NET EARNINGS (LOSS)			$	204		$	322		$	87		$	-408		$	205		Deferred income (loss) on hedging (net of tax)				2			-			-			-			2		COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING			$	155		$	314		$	149		$	-463		$	155
	Currency translation adjustment				-28			-			-			-			-28		COMPREHENSIVE EARNINGS (LOSS)				-68			131			-52			-76			-65		OWENS CORNING AND SUBSIDIARIES
	Pension and other postretirement adjustment (net of tax)				94			-			-			-			94		Less: Comprehensive earnings attributable to noncontrolling interests				-			-			3			-			3		CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	Deferred income (loss) on hedging (net of tax)				1			-			-			-			1		COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING			$	-68		$	131		$	-55		$	-76		$	-68		FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2011
	COMPREHENSIVE EARNINGS (LOSS)				271			322			87			-408			272		OWENS CORNING AND SUBSIDIARIES																		(in millions)
	Less: Comprehensive earnings attributable to noncontrolling interests				-			-			1			-			1		CONDENSED CONSOLIDATING BALANCE SHEET
	COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING			$	271		$	322		$	86		$	-408		$	271		AS OF DECEMBER 31, 2012																						Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	OWENS CORNING AND SUBSIDIARIES																		(in millions)																		NET CASH FLOW PROVIDED BY
	CONDENSED CONSOLIDATING BALANCE SHEET																																					OPERATING ACTIVITIES			$	-70		$	236		$	123		$	-		$	289
	AS OF DECEMBER 31, 2013																		ASSETS				Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated		NET CASH FLOW USED FOR INVESTING
	(in millions)																		CURRENT ASSETS																			ACTIVITIES
																				Cash and cash equivalents			$	-		$	3		$	52		$	-		$	55			Additions to plant and equipment			-7			-222			-213			-			-442
	ASSETS				Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			Receivables, net				-			-			600			-			600			Proceeds from the sale of assets or affiliates			-			3			78			-			81
	CURRENT ASSETS																			Due from affiliates				-			2,528			-			-2,528			-			Investment in subsidiaries and affiliates, net			-			-84			-			-			-84
		Cash and cash equivalents			$	-		$	3		$	54		$	-		$	57		Inventories				-			473			313			-			786			Net cash flow used for investing activities			-7			-303			-135			-			-445
		Receivables, net				-			-			683			-			683		Other current assets				5			75			96			-			176	NET CASH FLOW PROVIDED BY (USED FOR)
		Due from affiliates				-			2,664			-			-2,664			-				Total current assets		5			3,079			1,061			-2,528			1,617		FINANCING ACTIVITIES
		Inventories				-			487			323			-			810	Investment in subsidiaries					6,877			2,489			558			-9,924			-			Proceeds from senior revolving credit facility			1,547			-			365			-			1,912
		Assets held for sale - current				-			-			29			-			29	Due from affiliates					-			65			1,022			-1,087			-			Payments on senior revolving credit facility			-1,423			-			-207			-			-1,630
		Other current assets				45			141			83			-			269	Property, plant and equipment, net					374			1,294			1,235			-			2,903			Proceeds from long-term debt			-			-			6			-			6
				Total current assets		45			3,295			1,172			-2,664			1,848	Goodwill					-			1,068			75			-			1,143			Payments on long-term debt			-			-			-10			-			-10
	Investment in subsidiaries					7,228			2,557			558			-10,343			-	Intangible assets					-			939			302			-196			1,045			Net increase (decrease) in short-term debt			8			-			18			-			26
	Due from affiliates					-			67			959			-1,026			-	Deferred income taxes					54			525			25			-			604			Purchase of treasury stock			-138			-			-			-			-138
	Property, plant and equipment, net					362			1,313			1,257			-			2,932	Other non-current assets					62			74			120			-			256			Other			8			-			-			-			8
	Goodwill					-			1,127			39			-			1,166	TOTAL ASSETS				$	7,372		$	9,533		$	4,398		$	-13,735		$	7,568			Other intercompany loans			72			67			-139			-			-
Intangible assets					-			1,015			271			-246			1,040	LIABILITIES AND EQUITY																				Net cash flow provided by (used for) financing activities			74			67			33			-			174
Deferred income taxes					14			416			6			-			436	CURRENT LIABILITIES																		Effect of exchange rate changes on cash					-			-			-18			-			-18
Other non-current assets					31			64			130			-			225		Accounts payable and accrued liabilities			$	8		$	620		$	279		$	-		$	907	Net increase in cash and cash equivalents					-3			-			3			-			-
TOTAL ASSETS				$	7,680		$	9,854		$	4,392		$	-14,279		$	7,647		Due to affiliates				1,419			-			1,109			-2,528			-	Cash and cash equivalents at beginning of period					3			-			49			-			52
LIABILITIES AND EQUITY																			Short-term debt				-			-			5			-			5	CASH AND CASH EQUIVALENTS AT END OF
CURRENT LIABILITIES																			Long-term debt – current portion				-			2			2			-			4		PERIOD			$	-		$	-		$	52		$	-		$	52
	Accounts payable and accrued liabilities			$	15		$	608		$	365		$	-		$	988				Total current liabilities		1,427			622			1,395			-2,528			916
	Due to affiliates				1,688			-			976			-2,664			-	Long-term debt, net of current portion					1,884			28			164			-			2,076
	Short-term debt				-			-			1			-			1	Due to affiliates					-			1,022			65			-1,087			-
	Long-term debt – current portion				-			2			1			-			3	Pension plan liability					331			-			149			-			480
			Total current liabilities		1,703			610			1,343			-2,664			992	Other employee benefits liability					-			254			20			-			274
Long-term debt, net of current portion					1,814			26			184			-			2,024	Deferred income taxes					-			-			38			-			38
Due to affiliates					-			959			67			-1,026			-	Other liabilities					192			172			41			-196			209
Pension plan liability					213			-			123			-			336	OWENS CORNING STOCKHOLDERS’ EQUITY
Other employee benefits liability					-			226			16			-			242		Preferred stock				-			-			-			-	1		-
Deferred income taxes					-			-			23			-			23		Common stock				1			-			-			-			1
Other liabilities					158			246			42			-246			200		Additional paid in capital				3,925			6,541			2,062			-8,603			3,925
OWENS CORNING STOCKHOLDERS’ EQUITY																			Accumulated earnings				451			894			427			-1,321			451
	Preferred stock				-			-			-			-	1		-		Accumulated other comprehensive deficit				-364			-			-			-			-364
	Common stock				1			-			-			-			1		Cost of common stock in treasury				-475			-			-			-			-475
	Additional paid in capital				3,938			6,572			2,045			-8,617			3,938			Total Owens Corning stockholders’ equity			3,538			7,435			2,489			-9,924			3,538
	Accumulated earnings				655			1,215			513			-1,728			655		Noncontrolling interests				-			-			37			-			37
	Accumulated other comprehensive deficit				-297			-			-			-			-297	Total equity					3,538			7,435			2,526			-9,924			3,575
	Cost of common stock in treasury				-504			-			-			-			-504	TOTAL LIABILITIES AND EQUITY				$	7,372		$	9,533		$	4,398		$	-13,735		$	7,568
		Total Owens Corning stockholders’ equity			3,793			7,787			2,558			-10,345			3,793	OWENS CORNING AND SUBSIDIARIES
	Noncontrolling interests				-			-			37			-			37	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
Total equity					3,793			7,787			2,595			-10,345			3,830	FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2012
TOTAL LIABILITIES AND EQUITY				$	7,681		$	9,854		$	4,393		$	-14,281		$	7,647	(in millions)
OWENS CORNING AND SUBSIDIARIES
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS																						Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2013																		NET CASH FLOW PROVIDED BY
(in millions)																			OPERATING ACTIVITIES			$	-108		$	239		$	199		$	-		$	330
																		NET CASH FLOW USED FOR
				Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			INVESTING ACTIVITIES
NET CASH FLOW PROVIDED BY																				Additions to plant and equipment			-35			-174			-123			-			-332
	OPERATING ACTIVITIES			$	126		$	67		$	225		$	-		$	418			Proceeds from the sale of assets or affiliates			42			5			12			-			59
NET CASH FLOW USED FOR INVESTING																				Proceeds from Hurricane Sandy insurance claims			-			20			-			-			20
	ACTIVITIES																			Net cash flow used for investing activities			7			-149			-111			-			-253
		Additions to plant and equipment			-10			-143			-200			-			-353	NET CASH FLOW PROVIDED BY (USED FOR)
		Proceeds from the sale of assets or affiliates			16			-			-			-			16		FINANCING ACTIVITIES
		Investment in subsidiaries and affiliates, net			-			-51			-11			-			-62			Proceeds from senior revolving credit and receivables securitization facilities			1,564			-			313			-			1,877
		Proceeds from Hurricane Sandy insurance claims			-			58			-			-			58			Payments on senior revolving credit and receivables securitization facilities			-1,627			-			-330			-			-1,957
		Deposit related to sale of Hangzhou, China plant			-			-			34			-			34			Proceeds from long-term debt			599			-			-			-			599
		Net cash flow used for investing activities			6			-136			-177			-			-307			Payments on long-term debt			-430			-			-11			-			-441
NET CASH FLOW PROVIDED BY (USED FOR)																				Purchase of noncontrolling interest			-			-22			-			-			-22
	FINANCING ACTIVITIES																			Net increase (decrease) in short-term debt			-8			-			-15			-			-23
		Proceeds from senior revolving credit and receivables securitization facilities			940			-			123			-			1,063			Purchases of treasury stock			-113			-			-			-			-113
		Payments on senior revolving credit and receivables securitization facilities			-1,002			-			-101			-			-1,103			Other			4			-			-			-			4
		Payments on long-term debt			-			-			-2			-			-2			Other intercompany loans			112			-65			-47			-			-
		Net increase (decrease) in short-term debt			-			-			-4			-			-4			Net cash flow provided by (used for) financing activities			101			-87			-90			-			-76
		Purchases of treasury stock			-63			-			-			-			-63	Effect of exchange rate changes on cash					-			-			2			-			2
		Other			2			-			-			-			2	Net increase in cash and cash equivalents					-			3			-			-			3
		Other intercompany loans			-9			69			-60			-			-	Cash and cash equivalents at beginning of period					-			-			52			-			52
		Net cash flow provided by (used for) financing																CASH AND CASH EQUIVALENTS AT END OF
			activities		-132			69			-44			-			-107		PERIOD			$	-		$	3		$	52		$	-		$	55
Effect of exchange rate changes on cash					-			-			-2			-			-2
Net increase in cash and cash equivalents					-			-			2			-			2
Cash and cash equivalents at beginning of period					-			3			52			-			55
CASH AND CASH EQUIVALENTS AT END OF
	PERIOD			$	-		$	3		$	54		$	-		$	57

SUMMARY_OF_SIGNIFICANT_ACCOUNT1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (POLICIES)	12 Months Ended
	Dec. 31, 2013
Policy Text Block [Abstract]	'
Business Description and Basis of Presentation Policy [Text Block]	'
	Description of Business
	Owens Corning, a Delaware corporation, is a leading global producer of glass fiber reinforcements and other materials for composite systems and of residential and commercial building materials. The Company operates within two segments: Composites, which includes the Company's Reinforcements and Downstream businesses; and Building Materials, which includes the Company's Insulation and Roofing businesses. Through these lines of business, Owens Corning manufactures and sells products worldwide. The Company maintains leading market positions in all of its major product categories.
	Basis of Presentation
	Unless the context requires otherwise, the terms “Owens Corning,” “Company,” “we” and “our” in this report refer to Owens Corning and its subsidiaries.
	The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States.
Consolidation Policy Text Block	'
	Principles of Consolidation
	The Consolidated Financial Statements of the Company include the accounts of majority-owned subsidiaries. Intercompany accounts and transactions are eliminated.
Reclassifications Policy [Text Block]	'
	Reclassifications
	Certain reclassifications have been made to the 2012 and 2011 Consolidated Financial Statements and Notes to the Consolidated Financial Statements to conform to the classifications used in 2013.
Use Of Estimates	'
	Use of Estimates and Assumptions
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from those estimates.
Revenue Recognition Policy Text Block	'
	Revenue Recognition
	Revenue is recognized when title and risk of loss pass to the customer and collectability is reasonably assured. Provisions for discounts and rebates to customers, returns, warranties and other adjustments are provided in the same period that the related sales are recorded and are based on historical experience, current conditions and contractual obligations, as applicable.
Cost Of Sales Policy Text Block	'
	Cost of Sales
	Cost of sales includes material, labor, energy and manufacturing overhead costs, including depreciation and amortization expense associated with the manufacture and distribution of the Company's products. Distribution costs include inbound freight costs; purchasing and receiving costs; inspection costs; warehousing costs; shipping and handling costs, which include costs incurred relating to preparing, packaging, and shipping products to customers; and other costs of the Company's distribution network. All shipping and handling costs billed to the customer are included as net sales in the Consolidated Statements of Earnings (Loss).
Marketing and Admistrative Expenses Policy [Text Block]	'
	Marketing and Administrative Expenses
	Marketing and administrative expenses include selling and administrative costs, including depreciation and amortization expense, not directly associated with the manufacture and distribution of the Company's products.
	Included in marketing and administrative expenses are marketing and advertising costs, which are expensed the first time the advertisement takes place. Marketing and advertising costs include advertising, and marketing communications. Marketing and advertising expenses for the years ended December 31, 2013, 2012, and 2011 were $105 million, $109 million and $105 million, respectively.
Research And Development Expense Policy	'
	Science and Technology Expenses
	The Company incurs certain expenses related to science and technology. These expenses include salaries, building and equipment costs, utilities, administrative expenses, materials and supplies associated with the improvement and development of the Company's products and manufacturing processes. These costs are expensed as incurred.
Earnings Per Share Policy Text Block	'
	Earnings (Loss) per Share
	Basic earnings (loss) per share are computed using the weighted-average number of common shares outstanding during the period. Diluted earnings (loss) per share reflect the dilutive effect of common equivalent shares and increased shares that would result from the conversion of equity securities. The effects of anti-dilution are not presented.
Cash And Cash Equivalents Policy Text Block	'
	Cash and Cash Equivalents
	The Company defines cash and cash equivalents as cash and time deposits with original maturities of three months or less when purchased.
Receivables Policy Text Block	'
	Accounts Receivable
	Trade accounts receivable are recorded at the invoiced amount and do not bear interest. The allowance for doubtful accounts is an estimate of the amount of probable credit losses in our existing accounts receivable. Account balances are charged off against the allowance when the Company believes it is probable the receivable will not be recovered.
Inventory Policy Text Block	'
	Inventory Valuation
	Inventory costs include material, labor, and manufacturing overhead costs, including depreciation and amortization expense associated with the manufacture and distribution of the Company's products. Inventories are stated at lower of cost or market value and expense estimates are made for excess and obsolete inventories. Cost is determined by the first-in, first-out (“FIFO”) method.
Investment Policy Text Block	'
	Investments in Affiliates
	The Company accounts for investments in affiliates of 20% to 50% ownership when the Company does not have a controlling financial interest using the equity method under which the Company's share of earnings and losses of the affiliate is reflected in earnings and dividends are credited against the investment in affiliate when declared.
Goodwill And Intangible Assets Policy Text Block	'
	Goodwill and Other Intangible Assets
	Goodwill assets are not amortized but are tested for impairment on at least an annual basis. In the current year, as part of the annual assessment, the Company used a quantitative approach to determine whether the fair value of a reporting unit was less than its carrying amount.
	As part of our testing process for goodwill we estimated fair values using a discounted cash flow approach from the perspective of a market participant. Significant estimates in the discounted cash flow approach are cash flow forecasts of our reporting units, the discount rate, the terminal business value and the projected income tax rate. The cash flow forecasts of the reporting units are based upon management's long-term view of our markets and are the forecasts that are used by senior management and the Board of Directors to evaluate operating performance. The discount rate utilized is management's estimate of what the market's weighted average cost of capital is for a company with a similar debt rating and stock volatility, as measured by beta. The projected income tax rates utilized are the statutory tax rates for the countries where each reporting unit operates. The terminal business value is determined by applying a business growth factor to the latest year for which a forecast exists. As part of our goodwill quantitative testing process, we would evaluate whether there are reasonably likely changes to management's estimates that would have a material impact on the results of the goodwill impairment testing.
	Other indefinite-lived intangible assets are not amortized but are tested for impairment on at least an annual basis or when determined to have a finite useful life. Substantially all of the indefinite-lived intangible assets are in trademarks and trade names. The Company uses the royalty relief approach to determine whether it is more likely than not that the fair value of these assets is less than its carrying amount. This review is performed annually, or when circumstances arise which indicate there may be impairment. When applying the royalty relief approach, the Company performs a discounted cash flow analysis based on the value derived from owning these trademarks and trade names and being relieved from paying royalty to third parties. Significant assumptions used include projected cash flows, discount rate, projected income tax rate and terminal business value. These inputs are considered Level 3 inputs under the fair value hierarchy as they are the Company's own data, and are unobservable in the marketplace.
	Identifiable intangible assets with a determinable useful life are amortized over that determinable life. Amortization expense for the years ended December 31, 2013, 2012 and 2011 was $22 million, $21 million and $22 million, respectively. See Note 5 to the Consolidated Financial Statements for further discussion.
Property Plant And Equipment Policy Text Block	'
	Properties and Depreciation
	Property, plant and equipment are stated at cost and depreciated over their estimated useful lives using the straight-line method. Property, plant and equipment accounts are relieved of the cost and related accumulated depreciation when assets are disposed of or otherwise retired.
	Precious metals used in our production tooling are included in property, plant and equipment and are depleted as they are consumed during the production process. Depletion typically represents an annual expense of less than 3 percent of the outstanding value and is recorded in cost of sales on the Consolidated Statements of Earnings (Loss).
	For the years ended December 31, 2013, 2012 and 2011 depreciation expense was $310 million, $328 million and $296 million, respectively. In 2013, depreciation expense included $20 million of accelerated depreciation related to the change in useful life of assets recorded as a result of our assessment of the future utility of an incomplete Insulation facility located in Cordele, Georgia.  In 2013 and 2012, depreciation expense also included $9 million and $55 million of accelerated depreciation related to cost reduction actions further explained in Note 15 to the Consolidated Financial Statements.
	The range of useful lives for the major components of the Company's plant and equipment is as follows:
	Buildings and leasehold improvements       15 – 40 years
	Machinery and equipment
	Furnaces                      4 – 15 years
	Information systems               5 – 10 years
	Equipment               5 – 20 years
	Expenditures for normal maintenance and repairs are expensed as incurred.
Asset Impairments Policy [Text Block]	'
	Asset Impairments
	The Company evaluates tangible and intangible long-lived assets for impairment when triggering events have occurred. This requires significant assumptions including projected cash flows, projected income tax rate and terminal business value. These inputs are considered Level 3 inputs under the fair value hierarchy as they are the Company's own data, and are unobservable in the marketplace. Changes in management intentions, market conditions or operating performance could indicate that impairment charges might be necessary that would be material to the Company's Consolidated Financial Statements in any given period.
Income Tax Policy Text Block	'
	Income Taxes
	The Company recognizes current tax liabilities and assets for the estimated taxes payable or refundable on the tax returns for the current year. Deferred tax balances reflect the impact of temporary differences between the carrying amount of assets and liabilities and their tax basis. Amounts are stated at enacted tax rates expected to be in effect when taxes are actually paid or recovered. In addition, realization of certain deferred tax assets is dependent upon our ability to generate future taxable income. The Company records a valuation allowance to reduce its deferred tax assets to the amount that it believes is more likely than not to be realized. In addition, the Company estimates tax reserves to cover potential taxing authority claims for income taxes and interest attributable to audits of open tax years.
Value Added Tax Policy [Text Block]	'
	Taxes Collected from Customers and Remitted to Government Authorities and Taxes Paid to Vendors
	Taxes are assessed by various governmental authorities at different rates on many different types of transactions.  The Company charges sales tax or Value Added Tax (“VAT”) on sales to customers where applicable, as well as captures and claims back all available VAT that has been paid on purchases.  VAT is recorded in separate payable or receivable accounts and does not affect revenue or cost of sales line items in the income statement.  VAT receivable is recorded as a percentage of qualifying purchases at the time the vendor invoice is processed.  VAT payable is recorded as a percentage of qualifying sales at the time an Owens Corning sale to a customer subject to VAT occurs.  Amounts are paid to the taxing authority according to the method and collection prescribed by local regulations.  Where applicable, VAT payable is netted against VAT receivable. The Company also pays sales tax to vendors who include a tax, required by government regulations, to the purchase price charged to the Company.
Pension And Other Postretirement Plans Policy	'
	Pension and Other Postretirement Benefits
	Accounting for pensions and other postretirement benefits involves estimating the cost of benefits to be provided well into the future and attributing that cost over the time period each employee works. To accomplish this, extensive use is made of assumptions about investment returns, discount rates, inflation, mortality, turnover and medical costs.
Derivatives Policy Text Block	'
	Derivative Financial Instruments
	The Company recognizes all derivative instruments as either assets or liabilities at fair value on the balance sheet. To the extent that a derivative is effective as a cash flow hedge, the change in fair value of the derivative is deferred in accumulated other comprehensive income/deficit (“OCI”). Any portion considered to be ineffective is reported in earnings immediately. To the extent that a derivative is effective as a fair value hedge, the change in the fair value of the derivative is offset by the change in the fair value of the item being hedged in the Consolidated Statements of Earnings (Loss). See Note 4 to the Consolidated Financial Statements for further discussion.

SEGMENT_INFORMATION_TABLE

SEGMENT INFORMATION (TABLE)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	'
						Twelve Months Ended
						Dec. 31,
							2013			2012			2011
	Reportable Segments
	Composites					$	1,845		$	1,859		$	1,976
	Building Materials						3,609			3,482			3,537
		Total reportable segments					5,454			5,341			5,513
	Corporate eliminations						-159			-169			-178
	NET SALES					$	5,295		$	5,172		$	5,335
Schedule of Revenues by Geographical Areas [Table Text Block]	'
	External Customer Sales by Geographic Region
	United States					$	3,644		$	3,504		$	3,552
	Europe						545			558			619
	Asia Pacific						627			639			674
	Canada and other						479			471			490
	NET SALES					$	5,295		$	5,172		$	5,335
Reconciliation of Revenue from Product Groups to Consolidated [Table Text Block]	'
	Sales by Product Group
	Composites					$	1,845		$	1,859		$	1,976
	Insulation						1,642			1,468			1,368
	Roofing						1,967			2,014			2,169
	Corporate Eliminations						-159			-169			-178
	NET SALES					$	5,295		$	5,172		$	5,335
Schedule of Earnings before Interest and Taxes [Table Text Block]	'
	The following table summarizes EBIT by segment (in millions):
			Twelve Months Ended
			Dec. 31,
			2013			2012				2011
	Reportable Segments
	Composites		$	98		$	91			$	201
	Building Materials			426			293				332
		Total reportable segments	$	524		$	384			$	533
	Corporate, Other and Eliminations
	Charges related to cost reduction actions and related items (a)		$	-26		$	-136			$	-17
	Net gain (loss) related to Hurricane Sandy property damage and insurance recovery			15			-9				-
	Accelerated depreciation related to a change in the useful life of assets at our incomplete Cordele, Georgia facility			-20			-				-
	Gain on sale of assets and related charges (b)			-			-				16
	General corporate expense			-108			-91				-71
	EBIT		$	385		$	148			$	461
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	'
	TOTAL ASSETS AND PROPERTY, PLANT AND EQUIPMENT BY GEOGRAPHIC REGION
	The following table summarizes total assets by segment and property, plant and equipment by geographic region (in millions):
					Dec. 31,
	TOTAL ASSETS				2013			2012
	Reportable Segments
	Composites			$	2,379		$	2,414
	Building Materials				4,011			3,896
		Total reportable segments		$	6,390		$	6,310
	Reconciliation to consolidated total assets
	Cash and cash equivalents			$	57		$	55
	Current and noncurrent Deferred income taxes				573			685
	Investments in affiliates				51			51
	Assets held for sale - current				29			-
	Corporate property, plant and equipment, other assets and eliminations				547			467
	CONSOLIDATED TOTAL ASSETS			$	7,647		$	7,568
Schedule of Property, Plant and Equipment by Geographical Areas [Table Text Block]	'
	PROPERTY, PLANT AND EQUIPMENT BY GEOGRAPHIC REGION
	United States			$	1,688		$	1,708
	Europe				520			513
	Canada				131			150
	Asia Pacific				375			350
	Other				218			182
	TOTAL PROPERTY, PLANT AND EQUIPMENT			$	2,932		$	2,903
Schedule of Depreciation and Amortization by Segment [Table Text Block]	'
	PROVISION FOR DEPRECIATION AND AMORTIZATION
	The following table summarizes the provision for depreciation and amortization by segment (in millions):
				Twelve Months Ended
				Dec. 31,
					2013			2012			2011
	Reportable Segments
	Composites			$	130		$	123		$	128
	Building Materials				142			143			157
		Total reportable segments		$	272		$	266		$	285
	General corporate depreciation and amortization (a)			$	60		$	83		$	33
	CONSOLIDATED PROVISION FOR DEPRECIATION
		AND AMORTIZATION		$	332		$	349		$	318
	(a) 2013 includes $9 million of accelerated depreciation related to cost reduction actions and $20 million of accelerated depreciation related to the change in useful life of assets recorded as a result of our assessment of the future utility of an incomplete Insulation facility located in Cordele, Georgia. 2012 includes $55 million of accelerated depreciation charges related to cost reduction actions.
Schedule of Additions to Property, Plant and Equipment by Segment [Table Text Block]	'
	ADDITIONS TO PROPERTY, PLANT AND EQUIPMENT
	The following table summarizes additions to property, plant and equipment by segment (in millions):
				Twelve Months Ended
				Dec. 31,
					2013			2012			2011
	Reportable Segments
	Composites			$	155		$	167		$	256
	Building Materials				167			127			151
		Total reportable segments		$	322		$	294		$	407
	General corporate additions			$	31		$	38		$	35
	CONSOLIDATED ADDITIONS TO PROPERTY, PLANT AND
		EQUIPMENT		$	353		$	332		$	442

INVENTORIES_TABLE

INVENTORIES (TABLE)	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Schedule of Inventory Current [Table Text Block]	'
	3. INVENTORIES
	Inventories consist of the following (in millions):
		Dec. 31,
		2013		2012
	Finished goods	$	580	$	554
	Materials and supplies		230		232
	Total inventories	$	810	$	786

DERIVATIVE_FINANCIAL_INSTRUMEN1

DERIVATIVE FINANCIAL INSTRUMENTS (TABLE)	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule of Derivative Assets and Liabilities at Fair Value [Table Text Block]	'
	The following table presents the fair value and respective location of derivatives and hedging instruments on the Consolidated Balance Sheets (in millions):
					Fair Value at
					Dec. 31,		Dec. 31,
			Location		2013		2012
	Derivative assets designated as hedging instruments:
	Cash flow hedges:
		Natural gas and electricity	Other current assets		$	1	$	-
		Amount of gain recognized in OCI (effective portion)	OCI		$	1	$	-
	Derivative liabilities designated as hedging instruments:
	Cash flow hedges:
			Accounts payable and
		Natural gas and electricity		accrued liabilities	$	-	$	1
		Amount of loss recognized in OCI (effective portion)	OCI		$	-	$	1
	Fair value hedges:
			Accounts payable and
		Interest rate swaps		accrued liabilities	$	3	$	-
	Derivative assets not designated as hedging instruments:
		Foreign exchange contracts	Other current assets		$	-	$	1
	Derivative liabilities not designated as hedging instruments:
			Accounts payable and
		Foreign exchange contracts		accrued liabilities	$	1	$	3
Schedule of Fair Value Derivative Instruments Statements of Earnings Location [Table Text Block]	'
	The following table presents the impact and respective location of derivative activities on the Consolidated Statements of Earnings (Loss) (in millions):
										Twelve Months Ended
										Dec. 31,
					Location				2013		2012		2011
	Derivative activity designated as hedging instruments:
	Natural gas and electricity:
		Amount of loss reclassified from OCI into earnings
			(effective portion)		Cost of sales				$	1	$	5	$	4
	Interest rate swaps:
		Amount of (gain) loss recognized in earnings			Interest
			(ineffective portion)			expense, net			$	-1	$	-	$	2
	Derivative activity not designated as hedging instruments:
	Natural gas and electricity:
		Amount of (gain) loss recognized in earnings			Other expenses (income), net				$	-	$	-	$	-1
	Foreign currency exchange contract:
		Amount of (gain) loss recognized in earnings (a)			Other expenses (income), net				$	12	$	17	$	-14

GOODWILL_AND_OTHER_INTANGIBLE_1

GOODWILL AND OTHER INTANGIBLE ASSETS (TABLE)	12 Months Ended
	Dec. 31, 2013
Goodwill and Other Intangible Assets Disclosure [Abstract]	'
Schedule of Intangible Assets and Goodwill [Table Text Block]	'
	5. GOODWILL AND OTHER INTANGIBLE ASSETS
	Intangible assets and goodwill consist of the following (in millions):
	Dec. 31, 2013			Weighted Average Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	Amortizable intangible assets:
		Customer relationships		19	$	181	$	-68	$	113
		Technology		20		195		-74		121
		Franchise and other agreements		14		36		-16		20
	Indefinite-lived intangible assets:
		Trademarks				786		-		786
			Total intangible assets		$	1,198	$	-158	$	1,040
	Goodwill				$	1,166
	Dec. 31, 2012			Weighted Average Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	Amortizable intangible assets:
		Customer relationships		19	$	169	$	-58	$	111
		Technology		20		198		-64		134
		Franchise and other agreements		15		37		-14		23
	Indefinite-lived intangible assets:
		Trademarks				777		-		777
			Total intangible assets		$	1,181	$	-136	$	1,045
	Goodwill				$	1,143
Schedule of Goodwill [Table Text Block]	'
	The changes in the net carrying amount of goodwill by segment are as follows (in millions):
			Composites		Building Materials		Total
	Balance as of December 31, 2012		$	56	$	1,087	$	1,143
	Acquisitions (see Note 9)			2		22		24
	Foreign currency adjustments			-1		-		-1
	Balance as of December 31, 2013		$	57	$	1,109	$	1,166

PROPERTY_PLANT_AND_EQUIPMENT_T

PROPERTY, PLANT AND EQUIPMENT (TABLE)	12 Months Ended
	Dec. 31, 2013
Property, Plant And Equipment [Abstract]	'
Property Plant And Equipment Text Block	'
	6. PROPERTY, PLANT AND EQUIPMENT
	Property, plant and equipment consist of the following (in millions):
		Dec. 31,		Dec. 31,
		2013		2012
	Land	$	210	$	222
	Buildings and leasehold improvements		811		789
	Machinery and equipment		3,353		3,223
	Construction in progress		173		147
			4,547		4,381
	Accumulated depreciation		-1,615		-1,478
	Property, plant and equipment, net	$	2,932	$	2,903

CHANGES_IN_NONCONTROLLING_INTE1

CHANGES IN NONCONTROLLING INTERESTS (TABLE)	12 Months Ended
	Dec. 31, 2013
Noncontrolling Interest [Abstract]	'
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block]	'
	The following table discloses the changes in noncontrolling interests on Owens Corning stockholders' equity and effects on net earnings attributable to Owens Corning (in millions):
			Twelve Months Ended
			Dec. 31,
			2013		2012		2011
	Net earnings (loss) attributable to Owens Corning		$	204	$	-19	$	276
	Increase (decrease) in Owens Corning additional paid in capital for
		NEI purchase agreement		-		-16		-
	Change from net earnings (loss) attributable to Owens Corning and
		change in noncontrolling interests	$	204	$	-35	$	276

INVESTMENTS_IN_AFFILIATES_TABL

INVESTMENTS IN AFFILIATES (TABLE)	12 Months Ended
	Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]	'
Ownership Percentage in Affiliates [Table Text Block]	'
	8. INVESTMENTS IN AFFILIATES
	At December 31, 2013 and 2012, the Company's ownership percentage in affiliates, which generally are engaged in the manufacture of fibrous glass and related products for the insulation, construction, reinforcements, and textile markets, included:
			Dec. 31,
			2013		2012
	Arabian Fiberglass Insulation Company, Ltd. (Saudi Arabia)		49%		49%
	Fiberteq LLC (United States)		50%		50%
	Neptco LLC (United States)		50%		50%
Summarized Balance Sheet Information of Affiliates [Table Text Block]	'
	The following tables provide summarized financial information on a combined 100% basis for the Company's affiliates accounted for under the equity method (in millions):
			Dec. 31,
		2013		2012
	Current assets	$	50	$	53
	Non-current assets	$	90	$	85
	Current liabilities	$	25	$	22
	Non-current liabilities	$	23	$	24
Summarized Statement of Earnings Information of Affiliates [Table Text Block]	'
		Twelve Months Ended
		Dec. 31,
		2013		2012		2011
	Net sales	$	138	$	140	$	143
	Gross margin	$	7	$	11	$	14
	Net earnings	$	1	$	5	$	5

LEASES_TABLE

LEASES (TABLE)	12 Months Ended
	Dec. 31, 2013
Leases [Abstract]	'
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	'
	Period	Minimum Future Rental Commitments
	2014	$	66
	2015	$	39
	2016	$	31
	2017	$	22
	2018	$	14
	2019 and beyond	$	36

ACCOUNTS_PAYABLE_AND_ACCRUED_L1

ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (TABLE)	12 Months Ended
	Dec. 31, 2013
Accounts Payable and Accrued Liabilities, Current [Abstract]	'
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]	'
	13. ACCOUNTS PAYABLE AND ACCRUED LIABILITIES
	Accounts payable and accrued liabilities consist of the following (in millions):
			Dec. 31,
			2013		2012
	Accounts payable		$	547	$	498
	Payroll, vacation pay, and incentive compensation			161		115
	Payroll, property, and other taxes			95		98
	Other employee benefits liabilities			39		40
	Warranties (current portion)			19		20
	Legal and audit fees			7		11
	Accrued interest			8		11
	Charges related to cost reduction actions			26		45
	Deferred acquisition payments			5		10
	Other			81		59
		Total	$	988	$	907

WARRANTIES_TABLE

WARRANTIES (TABLE)	12 Months Ended
	Dec. 31, 2013
Warranties [Abstract]	'
Schedule of Product Warranty Liability [Table Text Block]	'
	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):
		Dec. 31,
			2013		2012
	Beginning balance		$	41	$	38
		Amounts accrued for current year		21		24
		Settlements of warranty claims		-21		-21
	Ending balance		$	41	$	41

COST_REDUCTION_ACTIONS_TABLE

COST REDUCTION ACTIONS (TABLE)	12 Months Ended
	Dec. 31, 2013
Cost Reduction Actions 2012 [Member]	'
Restructuring Cost and Reserve [Line Items]	'
Schedule Of Restructuring Reserve By Type Of Cost Text Block	'
	The following table summarizes the status of the unpaid liabilities from the Company's 2012 cost reduction actions (in millions):
		Beginning Balance Dec. 31, 2012		Costs Incurred		Payments			Ending Balance Dec. 31, 2013	Cumulative Charges Incurred
	Severance	$	45	$	2	$	21	$	26	$	53
	Total	$	45	$	2	$	21	$	26	$	53
Cost Reduction Actions 2013 [Member]	'
Restructuring Cost and Reserve [Line Items]	'
Schedule Of Restructuring Reserve By Type Of Cost Text Block	'
	The following table summarizes the status of the unpaid liabilities from the Company's 2013 cost reduction actions (in millions):
		Beginning Balance Dec. 31, 2012		Costs Incurred		Payments			Ending Balance Dec. 31, 2013	Cumulative Charges Incurred
	Severance	$	-	$	6	$	-	$	6	$	6
	Total	$	-	$	6	$	-	$	6	$	6

DEBT_TABLE

DEBT (TABLE)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Schedule of Long-term Debt Instruments [Table Text Block]	'
	16. DEBT
	Details of the Company's outstanding long-term debt are as follows (in millions):
			Dec. 31,		Dec. 31,
			2013		2012
	6.50% senior notes, net of discount, due 2016		$	400	$	400
	9.00% senior notes, net of discount, due 2019			248		247
	4.20% senior notes, net of discount, due 2022			599		599
	7.00% senior notes, net of discount, due 2036			540		540
	Accounts receivable securitization facility, maturing in 2016			162		141
	Senior revolving credit facility, maturing in 2018			12		73
	Various capital leases, due through and beyond 2050			49		52
	Various floating rate debt, maturing through 2017			1		2
	Fair value adjustment to debt			16		26
	Total long-term debt			2,027		2,080
	Less – current portion			3		4
		Long-term debt, net of current portion	$	2,024	$	2,076
Schedule of Maturities of Long-term Debt [Table Text Block]	'
	Debt Maturities
	The aggregate maturities for all long-term debt issues for each of the five years following December 31, 2013 and thereafter are presented in the table below (in millions). The maturities are stated at total cash the Company is contractually obligated to pay third parties and are not stated net of discount. The effects of the interest rate swap are not included in the table below.
	Period		Maturities
	2014		$	3
	2015			3
	2016			580
	2017			3
	2018			15
	2019 and beyond			1,423
	Total		$	2,027

PENSION_AND_OTHER_POSTRETIREME

PENSION AND OTHER POSTRETIREMENT BENEFITS (TABLE)	12 Months Ended
	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Schedule of Changes in Projected Benefit Obligations [Table Text Block]	'
	The following tables provide a reconciliation of the change in the projected benefit obligation, the change in plan assets and the net amount recognized in the Consolidated Balance Sheets for the years ended December 31, 2013 and 2012 (in millions):
			Dec. 31, 2013									Dec. 31, 2012
			U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
	Change in Projected Benefit Obligation
	Benefit obligation at beginning of period		$	1,187		$	554		$	1,741		$	1,105		$	503		$	1,608
	Service cost			9			6			15			9			5			14
	Interest cost			44			21			65			49			23			72
	Actuarial (gain) loss			-91			3			-88			111			34			145
	Currency (gain) loss			-			-8			-8			-			16			16
	Benefits paid			-79			-21			-100			-87			-23			-110
	Settlements / Curtailments			-			-7			-7			-			-6			-6
	Other			-			-2			-2			-			2			2
	Benefit obligation at end of period		$	1,070		$	546		$	1,616		$	1,187		$	554		$	1,741
Schedule of Changes in Fair Value of Plan Assets [Table Text Block]	'
	Change in Plan Assets
	Fair value of assets at beginning of period		$	856		$	404		$	1,260		$	812		$	360		$	1,172
	Actual return on plan assets			60			35			95			99			40			139
	Currency gain (loss)			-			-9			-9			-			12			12
	Company contributions			20			20			40			32			18			50
	Benefits paid			-79			-21			-100			-87			-23			-110
	Settlements/curtailments			-			-7			-7			-			-3			-3
	Other			1			-			1			-			-			-
	Fair value of assets at end of period		$	858		$	422		$	1,280		$	856		$	404		$	1,260
	Funded status		$	-212		$	-124		$	-336		$	-331		$	-150		$	-481
Schedule of Amounts Recognized in Balance Sheet [Table Text Block]	'
		Dec. 31, 2013									Dec. 31, 2012
		U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
	Amounts Recognized in the Consolidated Balance Sheets
	Prepaid pension cost	$	-		$	2		$	2		$	-		$	1		$	1
	Accrued pension cost - current		-			-2			-2			-			-2			-2
	Accrued pension cost - non-current		-212			-124			-336			-331			-149			-480
	Net amount recognized	$	-212		$	-124		$	-336		$	-331		$	-150		$	-481
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]	'
	Amounts Recorded in Accumulated OCI
	Net actuarial loss	$	-289		$	-78		$	-367		$	-396		$	-95		$	-491
Schedule of Assumptions Used to Determine Benefit Obligations [Table Text Block]	'
	Weighted-Average Assumptions Used to Determine Benefit Obligation
	The following table presents weighted average assumptions used to determine benefit obligations at the measurement dates noted:
				Dec. 31,
				2013		2012
	United States Plans
		Discount rate		4.65%		3.80%
		Expected return on plan assets		7.00%		7.50%
	Non-United States Plans
		Discount rate		4.45%		4.10%
		Expected return on plan assets		6.38%		6.13%
		Rate of compensation increase		3.94%		3.50%
Pension Plans, Defined Benefit [Member]	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]	'
	The following table presents information about the projected benefit obligation, accumulated benefit obligation ("ABO") and plan assets of the Company's pension plans (in millions):
			Dec. 31, 2013									Dec. 31, 2012
			U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
	Plans with ABO in excess of fair value
		of plan assets:
	Projected benefit obligation		$	1,070		$	406		$	1,476		$	1,187		$	511		$	1,698
	Accumulated benefit obligation		$	1,070		$	392		$	1,462		$	1,187		$	487		$	1,674
	Fair value of plan assets		$	858		$	293		$	1,151		$	856		$	365		$	1,221
	Plans with fair value of assets in
		excess of ABO:
	Projected benefit obligation		$	-		$	132		$	132		$	-		$	43		$	43
	Accumulated benefit obligation		$	-		$	121		$	121		$	-		$	33		$	33
	Fair value of plan assets		$	-		$	129		$	129		$	-		$	39		$	39
	Total projected benefit obligation		$	1,070		$	538		$	1,608		$	1,187		$	554		$	1,741
	Total accumulated benefit obligation		$	1,070		$	513		$	1,583		$	1,187		$	520		$	1,707
	Total plan assets		$	858		$	422		$	1,280		$	856		$	404		$	1,260
Schedule of Net Benefit Costs [Table Text Block]	'
	Components of Net Periodic Pension Cost
	The following table presents the components of net periodic pension cost for the periods noted (in millions):
		Twelve Months Ended
		Dec. 31,
		2013			2012			2011
	Service cost	$	15		$	15		$	14
	Interest cost		65			72			78
	Expected return on plan assets		-84			-86			-91
	Amortization of actuarial loss		20			29			15
	Net periodic benefit cost	$	16		$	30		$	16
Schedule of Assumptions Used to Determine Net Benefit Cost [Table Text Block]	'
	Weighted-Average Assumptions Used to Determine Net Periodic Pension Cost
	The following table presents weighted-average assumptions used to determine net periodic pension costs for the periods noted:
			Twelve Months Ended
			Dec. 31,
			2013		2012		2011
	United States Plans
		Discount rate	3.80%		4.60%		5.30%
		Expected return on plan assets	7.50%		7.25%		7.75%
		Rate of compensation increase	N/A (a)		N/A (a)		N/A (a)
	Non-United States Plans
		Discount rate	4.10%		4.65%		5.21%
		Expected return on plan assets	6.13%		7.23%		7.25%
		Rate of compensation increase	3.50%		3.75%		3.86%
	(a) Not applicable due to changes in plan made on August 1, 2009 that were effective beginning January 1, 2010.
Schedule of Expected Benefit Payments [Table Text Block]	'
	Estimated Future Benefit Payments
	The following table shows estimated future benefit payments from the Company's pension plans (in millions):
	Year	Estimated Benefit Payments
	2014	$	98
	2015	$	100
	2016	$	102
	2017	$	102
	2018	$	101
	2019-2023	$	503
United States Pension Plans Of US Entity Defined Benefit Member	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Schedule of Allocation of Plan Assets [Table Text Block]	'
	Plan Assets
	The following table summarizes the fair values, and levels within the fair value hierarchy in which the fair value measurements fall under United States pension plan assets at December 31, 2013 and 2012 (in millions):
				2013
	Asset Category			Level 1			Level 2			Level 3			Total
	Equity
		Domestic actively managed		$	100		$	38		$	-		$	138
		Domestic passive index			-			58			-			58
		International actively managed			121			-			-			121
		International passive index			-			25			-			25
	Fixed income and cash equivalents
		Short-term debt			-			27			-			27
		Corporate bonds			240			27			-			267
		Government debt			91			-			-			91
	Real estate investment trusts				26			-			-			26
	Absolute return strategies				-			80			-			80
	Real assets				-			25			-			25
	Total United States plan assets			$	578		$	280		$	-		$	858
				2012
	Asset Category			Level 1			Level 2			Level 3			Total
	Equity
		Domestic actively managed		$	129		$	-		$	-		$	129
		Domestic passive index			-			55			-			55
		International actively managed			122			-			-			122
		International passive index			-			27			-			27
	Fixed income and cash equivalents
		Cash and cash equivalents			1			-			-			1
		Short-term debt			-			24			-			24
		Corporate bonds			246			28			-			274
		Government debt			94			-			-			94
	Real estate investment trusts				27			-			-			27
	Absolute return strategies				-			76			-			76
	Real assets				-			27			-			27
	Total United States plan assets			$	619		$	237		$	-		$	856
Foreign Pension Plans Defined Benefit Member	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Schedule of Allocation of Plan Assets [Table Text Block]	'
	The following table summarizes the fair values, and levels within the fair value hierarchy in which the fair value measurements fall under non-United States pension plan assets at December 31, 2013 and 2012 (in millions):
				2013
	Asset Category			Level 1			Level 2			Level 3			Total
	Equity
		Domestic actively managed		$	30		$	4		$	-		$	34
		Domestic passive index			-			4			-			4
		International actively managed			-			61			-			61
		International passive index			2			26			-			28
	Fixed income and cash equivalents
		Cash and cash equivalents			3			22			-			25
		Corporate bonds			-			162			-			162
		Government Debt			-			7			-			7
	Absolute return strategies				-			101			-			101
	Total non-United States plan assets			$	35		$	387		$	-		$	422
				2012
	Asset Category			Level 1			Level 2			Level 3			Total
	Equity
		Domestic actively managed		$	25		$	4		$	-		$	29
		Domestic passive index			-			4			-			4
		International actively managed			-			50			-			50
		International passive index			8			23			-			31
	Fixed income and cash equivalents
		Cash and cash equivalents			3			26			-			29
		Corporate bonds			-			166			-			166
		Government Debt			-			7			-			7
	Absolute return strategies				-			88			-			88
	Total non-United States plan assets			$	36		$	368		$	-		$	404
Other Postretirement Benefits Other Than Pensions [Member]	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Schedule of Changes in Projected Benefit Obligations [Table Text Block]	'
	The following table provides a reconciliation of the change in the projected benefit obligation and the net amount recognized in the Consolidated Balance Sheets for the years ended December 31, 2013 and 2012 (in millions):
			Dec. 31, 2013									Dec. 31, 2012
			U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
	Change in Projected Benefit Obligation
	Benefit obligation at beginning of period		$	252		$	21		$	273		$	244		$	20		$	264
	Service cost			2			1			3			3			-			3
	Interest cost			8			1			9			10			1			11
	Actuarial loss (gain)			-18			-2			-20			17			-			17
	Currency loss (gain)			-			-			-			-			1			1
	Plan amendments			-			-			-			-3			-			-3
	Benefits paid			-18			-2			-20			-19			-1			-20
	Other			2			-3			-1			-			-			-
	Benefit obligation at end of period		$	228		$	16		$	244		$	252		$	21		$	273
	Funded status		$	-228		$	-16		$	-244		$	-252		$	-21		$	-273
Schedule of Amounts Recognized in Balance Sheet [Table Text Block]	'
	Amounts Recognized in the Consolidated
		Balance Sheets
	Accrued benefit obligation - current		$	-20		$	-		$	-20		$	-20		$	-1		$	-21
	Accrued benefit obligation - non-current			-208			-16			-224			-232			-20			-252
	Net amount recognized		$	-228		$	-16		$	-244		$	-252		$	-21		$	-273
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]	'
	Amounts Recorded in Accumulated OCI
	Net actuarial gain		$	21		$	6		$	27		$	4		$	5		$	9
	Net prior service credit			24			-			24			28			-			28
	Net amount recognized		$	45		$	6		$	51		$	32		$	5		$	37
Schedule of Assumptions Used to Determine Benefit Obligations [Table Text Block]	'
	Weighted-Average Assumptions Used to Determine Benefit Obligations
	The following table presents the discount rates used to determine the benefit obligations:
		Dec. 31,
		2013			2012
	United States plans		4.35%			3.50%
	Non-United States plans		4.45%			3.80%
Schedule of Net Benefit Costs [Table Text Block]	'
	Components of Net Periodic Postretirement Benefit Cost
	The following table presents the components of net periodic postretirement benefit cost (in millions):
		Twelve Months Ended
		Dec. 31,
		2013			2012			2011
	Service cost	$	3		$	3		$	3
	Interest cost		9			11			14
	Amortization of prior service cost		-4			-4			-
	Amortization of actuarial gain		-1			-3			-1
	Curtailment gain		-			-1			-2
	Net periodic postretirement benefit cost	$	7		$	6		$	14
Schedule of Assumptions Used to Determine Net Benefit Cost [Table Text Block]	'
	Weighted-Average Assumptions Used to Determine Net Periodic Postretirement Benefit Cost
	The following table presents the discount rates used to determine net periodic postretirement benefit cost:
		Twelve Months Ended
		Dec. 31,
		2013			2012			2011
	United States plans		3.50%			4.35%			5.05%
	Non-United States plans		3.80%			4.10%			4.80%
Schedule of Health Care Cost Trend Rates [Table Text Block]	'
	The following table presents health care cost trend rates used to determine net periodic postretirement benefit cost, as well as information regarding the ultimate rate and the year in which their ultimate rate is reached:
			Twelve Months Ended
			Dec. 31,
			2013			2012			2011
	United States plans
		Initial rate at end of year		7.00%			7.00%			7.00%
		Ultimate rate		5.00%			5.00%			5.00%
		Year in which ultimate rate is reached		2023			2022			2021
	Non-United States plans
		Initial rate at end of year		6.23%			6.50%			6.80%
		Ultimate rate		4.79%			4.80%			4.80%
		Year in which ultimate rate is reached		2019			2019			2019
Schedule of Expected Benefit Payments [Table Text Block]	'
	Estimated Future Benefit Payments
	The following table shows estimated future benefit payments from the Company's postretirement benefit plans (in millions):
	Year	Estimated Benefit Payments
	2014	$	21
	2015	$	21
	2016	$	21
	2017	$	21
	2018	$	20
	2019-2023	$	92
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]	'
	The health care cost trend rate assumption can have a significant effect on the amounts reported. To illustrate, a one-percentage point change in the December 31, 2013 assumed health care cost trend rate would have the following effects (in millions):
			1-Percentage Point
			Increase			Decrease
	Increase (decrease) in total service cost and interest cost components of net
		periodic postretirement benefit cost	$	1		$	-
	Increase (decrease) of accumulated postretirement benefit obligation		$	9		$	-8

STOCK_COMPENSATION_TABLE

STOCK COMPENSATION (TABLE)	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	'
	The following table summarizes the Company's stock option activity:
			Twelve Months Ended						Twelve Months Ended					Twelve Months Ended
			Dec. 31, 2013						Dec. 31, 2012					Dec. 31, 2011
			Number of Options		Weighted-Average Exercise Price				Number of Options		Weighted-Average Exercise Price			Number of Options		Weighted-Average Exercise Price
	Beginning Balance		3,025,220		$	27.78			3,293,545		$	26.26		3,397,858		$	25.06
	Granted		329,800			42.16			409,700			33.73		412,200			33.98
	Exercised		-549,800			26.88			-520,120			22.65		-374,738			25.78
	Forfeited		-56,500			34.58			-157,905			28.48		-141,775			21.19
	Ending Balance		2,748,720		$	29.55			3,025,220		$	27.78		3,293,545		$	26.26
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]	'
	The following table summarizes information about the Company's options outstanding and exercisable:
	Options Outstanding											Options Exercisable
						Weighted-Average						Number Exercisable at Dec. 31, 2013		Weighted-Average
	Range of Exercise Prices		Options Outstanding			Remaining Contractual Life			Exercise Price						Remaining Contractual Life		Exercise Price
	$13.89 - $42.16		2,748,720			5.35		$	29.55			1,939,145		4.2		$	26.75
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	'
	A summary of the status of the Company's plans that had restricted stock issued as of December 31, 2013, 2012 and 2011 and changes during the twelve months ended December 31, 2013, 2012 and 2011 are presented below:
		Twelve Months Ended					Twelve Months Ended					Twelve Months Ended
		Dec. 31, 2013					Dec. 31, 2012					Dec. 31, 2011
		Number of Shares		Weighted-Average Grant Date Fair Value			Number of Shares		Weighted-Average Grant Date Fair Value			Number of Shares	Weighted-Average Grant Date Fair Value
	Beginning Balance	1,875,065		$	27.14		1,941,742		$	23.83		1,987,705	$	19.74
	Granted	512,398			41.01		638,618			33.43		565,982		33.47
	Vested	-573,920			26		-544,528			22.38		-476,650		18.82
	Forfeited	-77,719			34.62		-160,767			28.36		-135,295		21.67
	Ending Balance	1,735,824		$	32.49		1,875,065		$	27.14		1,941,742	$	23.83
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest [Table Text Block]	'
		Twelve Months Ended					Twelve Months Ended					Twelve Months Ended
		Dec. 31, 2013					Dec. 31, 2012					Dec. 31, 2011
		Number of PSUs		Weighted-Average Grant Date Fair Value			Number of PSUs		Weighted-Average Grant Date Fair Value			Number of PSUs	Weighted-Average Grant Date Fair Value
	Beginning Balance	412,910		$	49.14		508,616		$	42.24		754,603	$	19.66
	Granted	207,050			56.71		256,400			47.97		354,564		48.61
	Vested	-167,610			48.61		-260,580			36.52		-526,608		16.45
	Forfeited/cancelled	-41,850			50.39		-91,526			43.45		-73,943		25.98
	Ending Balance	410,500		$	53.04		412,910		$	49.14		508,616	$	42.24

COMPREHENSIVE_EARNINGS_TABLE

COMPREHENSIVE EARNINGS (TABLE)	12 Months Ended
	Dec. 31, 2013
Comprehensive deficit:	'
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'
	A summary of the balances within each classification of accumulated OCI (deficit) as of December 31, 2013 and 2012
			Cash Flow Hedge Activity		Defined Benefit Pension Plan Activity		OCI Valuation Allowance activity		Foreign Currency Translation Adjustment		Total
	Balance as of December 31, 2011, net of tax	$	-3	$	-226	$	-111	$	25	$	-315
	Amounts classified into AOCI, net of tax	$	2	$	-140	$	-3	$	5	$	-136
	Amounts reclassified from AOCI, net of tax		0		87		0		0		87
	Change in AOCI, net of tax		2		-53		-3		5		-49
	Balance as of December 31, 2012, net of tax	$	-1	$	-279	$	-114	$	30	$	-364
	Amounts classified into AOCI, net of tax	$	1	$	15	$	-1	$	-28	$	-13
	Amounts reclassified from AOCI, net of tax		0		80		0		0		80
	Change in AOCI, net of tax		1		95		-1		-28		67
	Balance as of December 31, 2013, net of tax	$	0	$	-184	$	-115	$	2	$	-297

EARNINGS_PER_SHARE_TABLE

EARNINGS PER SHARE (TABLE)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share Abstract	'
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	'
	23. EARNINGS PER SHARE
	The following table summarizes the number of shares outstanding as well as our basic and diluted earnings per share for the years ended December 31, 2013, 2012 and 2011 (in millions, except per share amounts):
				Twelve Months Ended
				Dec. 31,
			2013		2012		2011
	Net earnings (loss) attributable to Owens Corning		$	204	$	-19	$	276
	Weighted-average number of shares outstanding used for
		basic earnings per share		118.2		119.4		122.5
	Non-vested restricted and performance shares			0.4		-		0.7
	Options to purchase common stock			0.5		-		0.3
	Weighted-average number of shares outstanding and common
		equivalent shares used for diluted earnings per share		119.1		119.4		123.5
	Earnings (loss) per common share attributable to Owens Corning common
		stockholders:
		Basic	$	1.73	$	-0.16	$	2.25
		Diluted	$	1.71	$	-0.16	$	2.23

FAIR_VALUE_MEASUREMENT_TABLE

FAIR VALUE MEASUREMENT (TABLE)	12 Months Ended
	Dec. 31, 2013									Dec. 31, 2012
Fair Value Disclosures [Abstract]	'									'
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	'									'
	The following table summarizes the fair values, and levels within the fair value hierarchy in which the fair value measurements fall, for assets and liabilities measured on a recurring basis as of December 31, 2013 (in millions):									The following table summarizes the fair values, and levels within the fair value hierarchy in which the fair value measurements fall, for assets and liabilities measured on a recurring basis as of December 31, 2012 (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)			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:									Assets:
	Cash equivalents	$	20	$	20	$	-	$	-	Cash equivalents	$	1	$	1	$	-	$	-
	Term deposits		2		2					Term deposits		1		1		-
	Derivative assets		1		-		1		-	Derivative assets		1		-		1		-
	Total assets	$	23	$	22	$	1	$	-	Total assets	$	3	$	2	$	1	$	-
	Liabilities:									Liabilities:
	Derivative liabilities	$	-4	$	-	$	-4	$	-	Derivative liabilities	$	-4	$	-	$	-4	$	-
	Total liabilities	$	-4	$	-	$	-4	$	-	Total liabilities	$	-4	$	-	$	-4	$	-

INCOME_TAXES_TABLE

INCOME TAXES (TABLE)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	'
	25. INCOME TAXES
				Twelve Months Ended
				Dec. 31,
				2013			2012			2011
	Earnings before taxes:
	United States			$	196		$	31		$	202
	Foreign				77			-71			151
		Total		$	273		$	-40		$	353
Schedule of Components of Income Tax Expense (Benefit), By Jurisdiction [Table Text Block]	'
	Income tax expense (benefit):
	Current
		United States		$	-2		$	1		$	-14
		State and local			-2			-2			2
		Foreign			30			20			28
			Total current		26			19			16
	Deferred
		United States			56			-22			61
		State and local			2			2			7
		Foreign			-16			-27			-10
			Total deferred		42			-47			58
	Total income tax expense (benefit)			$	68		$	-28		$	74
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	'
	The reconciliation between the United States federal statutory rate and the Company's effective income tax rate from continuing operations is:
		Twelve Months Ended
		Dec. 31,
		2013		2012		2011
	United States federal statutory rate	35	%	-35	%	35	%
	State and local income taxes, net of federal tax benefit	2		-5		2
	Foreign tax rate differential	-11		-60		-10
	US tax expense/benefit on foreign earnings/loss	-2		-62		-1
	Valuation allowance	17		127		2
	Loss on liquidation	-10		-		-
	Uncertain tax positions and settlements	-1		-2		-3
	Other, net	-5		-33		-4
	Effective tax rate	25	%	-70	%	21	%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	'
	The cumulative temporary differences giving rise to the deferred tax assets and liabilities at December 31, 2013 and 2012 are as follows (in millions):
			2013						2012
			Deferred Tax Assets			Deferred Tax Liabilities			Deferred Tax Assets			Deferred Tax Liabilities
	Other employee benefits		$	153		$	-		$	160		$	-
	Pension plans			115			-			161			-
	Operating loss carryforwards			1,117			-			1,080			-
	Depreciation			-			338			-			332
	Amortization			-			370			-			373
	State and local taxes			6			-			5			-
	Other			135			-			173			-
		Subtotal		1,526			708			1,579			705
	Valuation allowances			-270			-			-228			-
	Total deferred taxes		$	1,256		$	708		$	1,351		$	705
	The Company had current deferred tax assets of $138 million and $80 million which are included in other current assets in the
	Consolidated Balance Sheets as of December 31, 2013 and 2012, respectively.
Summary of Income Tax Contingencies [Table Text Block]	'
	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):
			Twelve Months Ended
			Dec. 31,
			2013			2012			2011
	Balance at beginning of period		$	161		$	170		$	210
	Tax positions related to the current year
		Gross additions		2			12			8
	Tax positions related to prior years
		Gross additions		4			7			6
		Gross reductions		-1			-14			-46
	Settlements			-3			-13			-7
	Lapses on statutes of limitations			-8			-1			-1
	Balance at end of period		$	155		$	161		$	170

QUARTERLY_FINANCIAL_DATA_TABLE

QUARTERLY FINANCIAL DATA (TABLE)	12 Months Ended
	Dec. 31, 2013										Dec. 31, 2012
Quarterly Financial Data [Abstract]	'										'
Schedule of Quarterly Financial Information [Table Text Block]	'										'
	26. QUARTERLY FINANCIAL INFORMATION (unaudited)												Quarter
											2012		First		Second		Third		Fourth
	Select quarterly financial information is presented in the tables below for the quarterly periods of 2013 and 2012, respectively (in millions, except per share amounts):										Net sales		$	1,346	$	1,391	$	1,276	$	1,159
											Cost of sales			1,160		1,152		1,074		989
			Quarter								Gross margin			186		239		202		170
	2013		First		Second		Third		Fourth		Earnings (loss) before interest and taxes			-12		85		59		16
	Net sales		$	1,350	$	1,347	$	1,320	$	1,278	Interest expense, net			28		28		29		29
	Cost of sales			1,137		1,080		1,067		1,045	Income tax expense			5		17		-14		-36
	Gross margin			213		267		253		233	Net earnings (loss) attributable to Owens Corning		$	-46	$	39	$	44	$	-56
	Earnings before interest and taxes			57		118		106		104
	Interest expense, net			29		29		29		25	BASIC EARNINGS (LOSS) PER COMMON SHARE
	Income tax expense (benefit)			6		39		26		-3		ATTRIBUTABLE TO OWENS CORNING
	Net earnings attributable to Owens Corning		$	22	$	49	$	51	$	82		COMMON STOCKHOLDERS	$	-0.38	$	0.32	$	0.37	$	-0.47
	BASIC EARNINGS PER COMMON SHARE										DILUTED EARNINGS (LOSS) PER COMMON SHARE
		ATTRIBUTABLE TO OWENS CORNING										ATTRIBUTABLE TO OWENS CORNING
		COMMON STOCKHOLDERS	$	0.19	$	0.41	$	0.43	$	0.7		COMMON STOCKHOLDERS	$	-0.38	$	0.32	$	0.37	$	-0.47
	DILUTED EARNINGS PER COMMON SHARE										During the first, second, third and fourth quarter 2012, the Company recorded additional pre-tax income (expense) of ($4) million ($3 million after tax expense), $1 million ($1 million after tax expense), ($7) million ($3 million after tax expense), and ($3) million ($2 million after tax expense) respectively; related to prior periods. The effect was not material to previously issued financial statements.
		ATTRIBUTABLE TO OWENS CORNING
		COMMON STOCKHOLDERS	$	0.18	$	0.41	$	0.43	$	0.69

CHANGES_IN_ACCUMULATED_OTHER_C1

CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (TABLE)	12 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income Loss Net Of Tax Abstract	'
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'
	A summary of the balances within each classification of accumulated OCI (deficit) as of December 31, 2013 and 2012
			Cash Flow Hedge Activity		Defined Benefit Pension Plan Activity		OCI Valuation Allowance activity		Foreign Currency Translation Adjustment		Total
	Balance as of December 31, 2011, net of tax	$	-3	$	-226	$	-111	$	25	$	-315
	Amounts classified into AOCI, net of tax	$	2	$	-140	$	-3	$	5	$	-136
	Amounts reclassified from AOCI, net of tax		0		87		0		0		87
	Change in AOCI, net of tax		2		-53		-3		5		-49
	Balance as of December 31, 2012, net of tax	$	-1	$	-279	$	-114	$	30	$	-364
	Amounts classified into AOCI, net of tax	$	1	$	15	$	-1	$	-28	$	-13
	Amounts reclassified from AOCI, net of tax		0		80		0		0		80
	Change in AOCI, net of tax		1		95		-1		-28		67
	Balance as of December 31, 2013, net of tax	$	0	$	-184	$	-115	$	2	$	-297

CONDENSED_CONSOLIDATING_FINANC

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (TABLE)	12 Months Ended
	Dec. 31, 2013																		Dec. 31, 2012																		Dec. 31, 2011
Condensed Financial Information of Consolidating Company Disclosure [Abstract]	'																		'																		'
Condensed Consolidating Statement of Earnings [Table Text Block]	'																		'																		'
	OWENS CORNING AND SUBSIDIARIES																		OWENS CORNING AND SUBSIDIARIES																		OWENS CORNING AND SUBSIDIARIES
	CONDENSED CONSOLIDATING STATEMENT OF EARNINGS (LOSS)																		CONDENSED CONSOLIDATING STATEMENT OF EARNINGS																		CONDENSED CONSOLIDATING STATEMENT OF EARNINGS
	FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2013																		FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2012																		FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2011
	(in millions)																		(in millions)																		(in millions)
			Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated					Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated					Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	NET SALES			$	-		$	3,730		$	1,988		$	-423		$	5,295		NET SALES			$	-		$	3,616		$	1,932		$	-376		$	5,172		NET SALES			$	-		$	3,641		$	2,018		$	-324		$	5,335
	COST OF SALES				-10			3,085			1,677			-423			4,329		COST OF SALES				-9			3,015			1,745			-376			4,375		COST OF SALES				-23			3,015			1,639			-324			4,307
			Gross margin		10			645			311			-			966				Gross margin		9			601			187			-			797				Gross margin		23			626			379			-			1,028
	OPERATING EXPENSES																		OPERATING EXPENSES																		OPERATING EXPENSES
		Marketing and administrative expenses			123			267			140			-			530			Marketing and administrative expenses			112			259			138			-			509			Marketing and administrative expenses			67			314			144			-			525
		Science and technology expenses			-			58			19			-			77			Science and technology expenses			-			61			18			-			79			Science and technology expenses			-			61			16			-			77
		Charges related to cost reduction actions			-			-			8			-			8			Charges related to cost reduction actions			-						51			-			51			Other expenses (income), net			-88			15			38			-			-35
		Other expenses (income), net			-27			-39			32			-			-34			Other expenses (income)			-37			24			23			-			10				Total operating expenses		-21			390			198			-			567
			Total operating expenses		96			286			199			-			581				Total operating expenses		75			344			230			-			649		EARNINGS BEFORE INTEREST AND TAXES				44			236			181			-			461
	EARNINGS BEFORE INTEREST AND TAXES				-86			359			112			-			385		EARNINGS BEFORE INTEREST AND TAXES				-66			257			-43			-			148		Interest expense, net				105			-3			6			-			108
	Interest expense, net				104			2			6			-			112		Interest expense, net				102			2			10			-			114		EARNINGS (LOSS) BEFORE TAXES				-61			239			175			-			353
	EARNINGS (LOSS) BEFORE TAXES				-190			357			106			-			273		Loss on extinguishment of debt				74												74		Less: Income tax expense (benefit)				-23			72			25			-			74
	Less: Income tax expense (benefit)				-72			121			19			-			68		EARNINGS (LOSS) BEFORE TAXES				-242			255			-53			-			-40		EARNINGS (LOSS) BEFORE EQUITY IN NET EARNINGS
	EARNINGS (LOSS) BEFORE EQUITY IN NET EARNINGS																		Less: Income tax expense (benefit)				-92			64			-			-			-28			OF SUBSIDIARIES AND AFFILIATES			-38			167			150			-			279
		OF SUBSIDIARIES AND AFFILIATES			-118			236			87			-			205		EARNINGS (LOSS) BEFORE EQUITY IN NET																		Equity in net earnings of subsidiaries				314			149			-			-463			-
	Equity in net earnings of subsidiaries				322			86			-			-408			-			EARNINGS (LOSS) OF SUBSIDIARIES AND																	Equity in net earnings (loss) of affiliates				-			-2			4			-			2
	Equity in net earnings of affiliates				-			-			-			-	1		-			AFFILIATES			-150			191			-53			-			-12		NET EARNINGS (LOSS)				276			314			154			-463			281
	NET EARNINGS (LOSS)				204			322			87			-408			205		Equity in net earnings of subsidiaries				131			-55			-			-76			-		Less: Net earnings attributable to noncontrolling interest				-			-			5			-			5
	Less: Net earnings attributable to noncontrolling interests				-			-			1			-			1		Equity in net earnings (loss) of affiliates				-			-5			1			-			-4		NET EARNINGS (LOSS) ATTRIBUTABLE TO
	NET EARNINGS (LOSS) ATTRIBUTABLE TO																		NET EARNINGS (LOSS)				-19			131			-52			-76			-16			OWENS CORNING		$	276		$	314		$	149		$	-463		$	276
		OWENS CORNING		$	204		$	322		$	86		$	-408		$	204		Less: Net earnings attributable to noncontrolling interest				-			-			3			-			3
																			NET EARNINGS (LOSS) ATTRIBUTABLE TO
																				OWENS CORNING		$	-19		$	131		$	-55		$	-76		$	-19
Condensed Consolidating Statement Of Comprehensive Earnings [Table Text Block]	'																		'																		'
	OWENS CORNING AND SUBSIDIARIES																		OWENS CORNING AND SUBSIDIARIES																		OWENS CORNING AND SUBSIDIARIES
	CONSOLIDATING STATEMENT OF COMPREHENSIVE EARNINGS (LOSS)																		CONSOLIDATING STATEMENT OF COMPREHENSIVE EARNINGS																		CONSOLIDATING STATEMENT OF COMPREHENSIVE EARNINGS
	FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2013																		FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2012																		FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2011
	(in millions)																		(in millions)																		(in millions)
			Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated					Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated					Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	NET EARNINGS (LOSS)			$	204		$	322		$	87		$	-408		$	205		NET EARNINGS (LOSS)			$	-19		$	131		$	-52		$	-76		$	-16		NET EARNINGS (LOSS)			$	276		$	314		$	154		$	-463		$	281
	Currency translation adjustment				-28			-			-			-			-28		Currency translation adjustment				5			-			-			-			5		Currency translation adjustment				-39			-			-			-			-39
	Pension and other postretirement adjustment (net of tax)				94			-			-			-			94		Pension and other postretirement adjustment (net of tax)				-56			-			-			-			-56		Pension and other postretirement adjustment (net of tax)				-80			-			-			-			-80
	Deferred income (loss) on hedging (net of tax)				1			-			-			-			1		Deferred income (loss) on hedging (net of tax)				2			-			-			-			2		Deferred income (loss) on hedging (net of tax)				-2			-			-			-			-2
	COMPREHENSIVE EARNINGS (LOSS)				271			322			87			-408			272		COMPREHENSIVE EARNINGS (LOSS)				-68			131			-52			-76			-65		COMPREHENSIVE EARNINGS (LOSS)				155			314			154			-463			160
	Less: Comprehensive earnings attributable to noncontrolling interests				-			-			1			-			1		Less: Comprehensive earnings attributable to noncontrolling interests				-			-			3			-			3		Less: Comprehensive earnings attributable to noncontrolling interests				-			-			5			-			5
	COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING			$	271		$	322		$	86		$	-408		$	271		COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING			$	-68		$	131		$	-55		$	-76		$	-68		COMPREHENSIVE EARNINGS (LOSS) ATTRIBUTABLE TO OWENS CORNING			$	155		$	314		$	149		$	-463		$	155
Condensed Consolidating Balance Sheet [Table Text Block]	'																		'																		'
	OWENS CORNING AND SUBSIDIARIES																		OWENS CORNING AND SUBSIDIARIES
	CONDENSED CONSOLIDATING BALANCE SHEET																		CONDENSED CONSOLIDATING BALANCE SHEET
	AS OF DECEMBER 31, 2013																		AS OF DECEMBER 31, 2012
	(in millions)																		(in millions)
	ASSETS				Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated		ASSETS				Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	CURRENT ASSETS																		CURRENT ASSETS
		Cash and cash equivalents			$	-		$	3		$	54		$	-		$	57		Cash and cash equivalents			$	-		$	3		$	52		$	-		$	55
		Receivables, net				-			-			683			-			683		Receivables, net				-			-			600			-			600
		Due from affiliates				-			2,664			-			-2,664			-		Due from affiliates				-			2,528			-			-2,528			-
		Inventories				-			487			323			-			810		Inventories				-			473			313			-			786
		Assets held for sale - current				-			-			29			-			29		Other current assets				5			75			96			-			176
		Other current assets				45			141			83			-			269				Total current assets		5			3,079			1,061			-2,528			1,617
				Total current assets		45			3,295			1,172			-2,664			1,848	Investment in subsidiaries					6,877			2,489			558			-9,924			-
	Investment in subsidiaries					7,228			2,557			558			-10,343			-	Due from affiliates					-			65			1,022			-1,087			-
	Due from affiliates					-			67			959			-1,026			-	Property, plant and equipment, net					374			1,294			1,235			-			2,903
	Property, plant and equipment, net					362			1,313			1,257			-			2,932	Goodwill					-			1,068			75			-			1,143
	Goodwill					-			1,127			39			-			1,166	Intangible assets					-			939			302			-196			1,045
	Intangible assets					-			1,015			271			-246			1,040	Deferred income taxes					54			525			25			-			604
	Deferred income taxes					14			416			6			-			436	Other non-current assets					62			74			120			-			256
	Other non-current assets					31			64			130			-			225	TOTAL ASSETS				$	7,372		$	9,533		$	4,398		$	-13,735		$	7,568
	TOTAL ASSETS				$	7,680		$	9,854		$	4,392		$	-14,279		$	7,647	LIABILITIES AND EQUITY
	LIABILITIES AND EQUITY																		CURRENT LIABILITIES
	CURRENT LIABILITIES																			Accounts payable and accrued liabilities			$	8		$	620		$	279		$	-		$	907
		Accounts payable and accrued liabilities			$	15		$	608		$	365		$	-		$	988		Due to affiliates				1,419			-			1,109			-2,528			-
		Due to affiliates				1,688			-			976			-2,664			-		Short-term debt				-			-			5			-			5
		Short-term debt				-			-			1			-			1		Long-term debt – current portion				-			2			2			-			4
		Long-term debt – current portion				-			2			1			-			3				Total current liabilities		1,427			622			1,395			-2,528			916
				Total current liabilities		1,703			610			1,343			-2,664			992	Long-term debt, net of current portion					1,884			28			164			-			2,076
	Long-term debt, net of current portion					1,814			26			184			-			2,024	Due to affiliates					-			1,022			65			-1,087			-
	Due to affiliates					-			959			67			-1,026			-	Pension plan liability					331			-			149			-			480
	Pension plan liability					213			-			123			-			336	Other employee benefits liability					-			254			20			-			274
	Other employee benefits liability					-			226			16			-			242	Deferred income taxes					-			-			38			-			38
	Deferred income taxes					-			-			23			-			23	Other liabilities					192			172			41			-196			209
	Other liabilities					158			246			42			-246			200	OWENS CORNING STOCKHOLDERS’ EQUITY
	OWENS CORNING STOCKHOLDERS’ EQUITY																			Preferred stock				-			-			-			-	1		-
		Preferred stock				-			-			-			-	1		-		Common stock				1			-			-			-			1
		Common stock				1			-			-			-			1		Additional paid in capital				3,925			6,541			2,062			-8,603			3,925
		Additional paid in capital				3,938			6,572			2,045			-8,617			3,938		Accumulated earnings				451			894			427			-1,321			451
		Accumulated earnings				655			1,215			513			-1,728			655		Accumulated other comprehensive deficit				-364			-			-			-			-364
		Accumulated other comprehensive deficit				-297			-			-			-			-297		Cost of common stock in treasury				-475			-			-			-			-475
		Cost of common stock in treasury				-504			-			-			-			-504			Total Owens Corning stockholders’ equity			3,538			7,435			2,489			-9,924			3,538
			Total Owens Corning stockholders’ equity			3,793			7,787			2,558			-10,345			3,793		Noncontrolling interests				-			-			37			-			37
		Noncontrolling interests				-			-			37			-			37	Total equity					3,538			7,435			2,526			-9,924			3,575
	Total equity					3,793			7,787			2,595			-10,345			3,830	TOTAL LIABILITIES AND EQUITY				$	7,372		$	9,533		$	4,398		$	-13,735		$	7,568
	TOTAL LIABILITIES AND EQUITY				$	7,681		$	9,854		$	4,393		$	-14,281		$	7,647
Condensed Consolidating Statement of Cash Flows [Table Text Block]	'																		'																		'
	OWENS CORNING AND SUBSIDIARIES																		OWENS CORNING AND SUBSIDIARIES																		OWENS CORNING AND SUBSIDIARIES
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS																		CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS																		CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2013																		FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2012																		FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2011
	(in millions)																		(in millions)																		(in millions)
				Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated						Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated						Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	NET CASH FLOW PROVIDED BY																		NET CASH FLOW PROVIDED BY																		NET CASH FLOW PROVIDED BY
		OPERATING ACTIVITIES			$	126		$	67		$	225		$	-		$	418		OPERATING ACTIVITIES			$	-108		$	239		$	199		$	-		$	330		OPERATING ACTIVITIES			$	-70		$	236		$	123		$	-		$	289
	NET CASH FLOW USED FOR INVESTING																		NET CASH FLOW USED FOR																		NET CASH FLOW USED FOR INVESTING
		ACTIVITIES																		INVESTING ACTIVITIES																		ACTIVITIES
			Additions to plant and equipment			-10			-143			-200			-			-353			Additions to plant and equipment			-35			-174			-123			-			-332			Additions to plant and equipment			-7			-222			-213			-			-442
			Proceeds from the sale of assets or affiliates			16			-			-			-			16			Proceeds from the sale of assets or affiliates			42			5			12			-			59			Proceeds from the sale of assets or affiliates			-			3			78			-			81
			Investment in subsidiaries and affiliates, net			-			-51			-11			-			-62			Proceeds from Hurricane Sandy insurance claims			-			20			-			-			20			Investment in subsidiaries and affiliates, net			-			-84			-			-			-84
			Proceeds from Hurricane Sandy insurance claims			-			58			-			-			58			Net cash flow used for investing activities			7			-149			-111			-			-253			Net cash flow used for investing activities			-7			-303			-135			-			-445
			Deposit related to sale of Hangzhou, China plant			-			-			34			-			34	NET CASH FLOW PROVIDED BY (USED FOR)																		NET CASH FLOW PROVIDED BY (USED FOR)
			Net cash flow used for investing activities			6			-136			-177			-			-307		FINANCING ACTIVITIES																		FINANCING ACTIVITIES
	NET CASH FLOW PROVIDED BY (USED FOR)																				Proceeds from senior revolving credit and receivables securitization facilities			1,564			-			313			-			1,877			Proceeds from senior revolving credit facility			1,547			-			365			-			1,912
		FINANCING ACTIVITIES																			Payments on senior revolving credit and receivables securitization facilities			-1,627			-			-330			-			-1,957			Payments on senior revolving credit facility			-1,423			-			-207			-			-1,630
			Proceeds from senior revolving credit and receivables securitization facilities			940			-			123			-			1,063			Proceeds from long-term debt			599			-			-			-			599			Proceeds from long-term debt			-			-			6			-			6
			Payments on senior revolving credit and receivables securitization facilities			-1,002			-			-101			-			-1,103			Payments on long-term debt			-430			-			-11			-			-441			Payments on long-term debt			-			-			-10			-			-10
			Payments on long-term debt			-			-			-2			-			-2			Purchase of noncontrolling interest			-			-22			-			-			-22			Net increase (decrease) in short-term debt			8			-			18			-			26
			Net increase (decrease) in short-term debt			-			-			-4			-			-4			Net increase (decrease) in short-term debt			-8			-			-15			-			-23			Purchase of treasury stock			-138			-			-			-			-138
			Purchases of treasury stock			-63			-			-			-			-63			Purchases of treasury stock			-113			-			-			-			-113			Other			8			-			-			-			8
			Other			2			-			-			-			2			Other			4			-			-			-			4			Other intercompany loans			72			67			-139			-			-
			Other intercompany loans			-9			69			-60			-			-			Other intercompany loans			112			-65			-47			-			-			Net cash flow provided by (used for) financing activities			74			67			33			-			174
			Net cash flow provided by (used for) financing																		Net cash flow provided by (used for) financing activities			101			-87			-90			-			-76	Effect of exchange rate changes on cash					-			-			-18			-			-18
				activities		-132			69			-44			-			-107	Effect of exchange rate changes on cash					-			-			2			-			2	Net increase in cash and cash equivalents					-3			-			3			-			-
	Effect of exchange rate changes on cash					-			-			-2			-			-2	Net increase in cash and cash equivalents					-			3			-			-			3	Cash and cash equivalents at beginning of period					3			-			49			-			52
	Net increase in cash and cash equivalents					-			-			2			-			2	Cash and cash equivalents at beginning of period					-			-			52			-			52	CASH AND CASH EQUIVALENTS AT END OF
	Cash and cash equivalents at beginning of period					-			3			52			-			55	CASH AND CASH EQUIVALENTS AT END OF																			PERIOD			$	-		$	-		$	52		$	-		$	52
	CASH AND CASH EQUIVALENTS AT END OF																			PERIOD			$	-		$	3		$	52		$	-		$	55
		PERIOD			$	-		$	3		$	54		$	-		$	57

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENT OF EARNINGS (DETAIL) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Financial Statements Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
NET SALES	$1,278	$1,320	$1,347	$1,350	$1,159	$1,276	$1,391	$1,346	$5,295	$5,172	$5,335
COST OF SALES	1,045	1,067	1,080	1,137	989	1,074	1,152	1,160	4,329	4,375	4,307
Gross margin	233	253	267	213	170	202	239	186	966	797	1,028
OPERATING EXPENSES	'	'	'	'	'	'	'	'	'	'	'
Marketing and administrative expenses	'	'	'	'	'	'	'	'	530	509	525
Science and technology expenses	'	'	'	'	'	'	'	'	77	79	77
Charges related to cost reduction actions	'	'	'	'	'	'	'	'	8	51	0
Employee emergence equity program expense	'	'	'	'	'	'	'	'	0	0	0
Other Expenses, net	'	'	'	'	'	'	'	'	-34	10	-35
Total operating expenses	'	'	'	'	'	'	'	'	581	649	567
Earnings Before Interest And Taxes	104	106	118	57	16	59	85	-12	385	148	461
Interest expense, net	25	29	29	29	29	29	28	28	112	114	108
EARNINGS BEFORE TAXES	'	'	'	'	'	'	'	'	273	-40	353
Income Tax Expense (Benefit)	3	-26	-39	-6	36	14	-17	-5	-68	28	-74
Equity in net earnings of affiliates	'	'	'	'	'	'	'	'	0	-4	2
NET EARNINGS	'	'	'	'	'	'	'	'	205	-16	281
Less: Net earnings attributable to noncontrolling interests	'	'	'	'	'	'	'	'	1	3	5
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	82	51	49	22	-56	44	39	-46	204	-19	276
Parent Company Member	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
NET SALES	'	'	'	'	'	'	'	'	0	0	0
COST OF SALES	'	'	'	'	'	'	'	'	-10	-9	-23
Gross margin	'	'	'	'	'	'	'	'	10	9	23
OPERATING EXPENSES	'	'	'	'	'	'	'	'	'	'	'
Marketing and administrative expenses	'	'	'	'	'	'	'	'	123	112	67
Science and technology expenses	'	'	'	'	'	'	'	'	0	0	0
Charges related to cost reduction actions	'	'	'	'	'	'	'	'	0	0	0
Other Expenses, net	'	'	'	'	'	'	'	'	-27	-37	-88
Total operating expenses	'	'	'	'	'	'	'	'	96	75	-21
Earnings Before Interest And Taxes	'	'	'	'	'	'	'	'	-86	-66	44
Interest expense, net	'	'	'	'	'	'	'	'	104	102	105
EARNINGS BEFORE TAXES	'	'	'	'	'	'	'	'	-190	-242	-61
Income Tax Expense (Benefit)	'	'	'	'	'	'	'	'	72	92	23
Income (Loss) From Continuing Operations Before Minority Interest and Income (Loss) From Equity Method Investments	'	'	'	'	'	'	'	'	-118	-150	-38
Equity in net earnings of subsidiaries	'	'	'	'	'	'	'	'	322	131	314
Equity in net earnings of affiliates	'	'	'	'	'	'	'	'	0	0	0
NET EARNINGS	'	'	'	'	'	'	'	'	204	-19	276
Less: Net earnings attributable to noncontrolling interests	'	'	'	'	'	'	'	'	0	0	0
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	'	'	'	'	'	'	'	'	204	-19	276
Guarantor Subsidiaries Member	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
NET SALES	'	'	'	'	'	'	'	'	3,730	3,616	3,641
COST OF SALES	'	'	'	'	'	'	'	'	3,085	3,015	3,015
Gross margin	'	'	'	'	'	'	'	'	645	601	626
OPERATING EXPENSES	'	'	'	'	'	'	'	'	'	'	'
Marketing and administrative expenses	'	'	'	'	'	'	'	'	267	259	314
Science and technology expenses	'	'	'	'	'	'	'	'	58	61	61
Charges related to cost reduction actions	'	'	'	'	'	'	'	'	0	'	0
Other Expenses, net	'	'	'	'	'	'	'	'	-39	24	15
Total operating expenses	'	'	'	'	'	'	'	'	286	344	390
Earnings Before Interest And Taxes	'	'	'	'	'	'	'	'	359	257	236
Interest expense, net	'	'	'	'	'	'	'	'	2	2	-3
EARNINGS BEFORE TAXES	'	'	'	'	'	'	'	'	357	255	239
Income Tax Expense (Benefit)	'	'	'	'	'	'	'	'	-121	-64	-72
Income (Loss) From Continuing Operations Before Minority Interest and Income (Loss) From Equity Method Investments	'	'	'	'	'	'	'	'	236	191	167
Equity in net earnings of subsidiaries	'	'	'	'	'	'	'	'	86	-55	149
Equity in net earnings of affiliates	'	'	'	'	'	'	'	'	0	-5	-2
NET EARNINGS	'	'	'	'	'	'	'	'	322	131	314
Less: Net earnings attributable to noncontrolling interests	'	'	'	'	'	'	'	'	0	0	0
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	'	'	'	'	'	'	'	'	322	131	314
Non Guarantor Subsidiaries Member	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
NET SALES	'	'	'	'	'	'	'	'	1,988	1,932	2,018
COST OF SALES	'	'	'	'	'	'	'	'	1,677	1,745	1,639
Gross margin	'	'	'	'	'	'	'	'	311	187	379
OPERATING EXPENSES	'	'	'	'	'	'	'	'	'	'	'
Marketing and administrative expenses	'	'	'	'	'	'	'	'	140	138	144
Science and technology expenses	'	'	'	'	'	'	'	'	19	18	16
Charges related to cost reduction actions	'	'	'	'	'	'	'	'	8	51	0
Other Expenses, net	'	'	'	'	'	'	'	'	32	23	38
Total operating expenses	'	'	'	'	'	'	'	'	199	230	198
Earnings Before Interest And Taxes	'	'	'	'	'	'	'	'	112	-43	181
Interest expense, net	'	'	'	'	'	'	'	'	6	10	6
EARNINGS BEFORE TAXES	'	'	'	'	'	'	'	'	106	-53	175
Income Tax Expense (Benefit)	'	'	'	'	'	'	'	'	-19	0	-25
Income (Loss) From Continuing Operations Before Minority Interest and Income (Loss) From Equity Method Investments	'	'	'	'	'	'	'	'	87	-53	150
Equity in net earnings of subsidiaries	'	'	'	'	'	'	'	'	0	0	0
Equity in net earnings of affiliates	'	'	'	'	'	'	'	'	0	1	4
NET EARNINGS	'	'	'	'	'	'	'	'	87	-52	154
Less: Net earnings attributable to noncontrolling interests	'	'	'	'	'	'	'	'	1	3	5
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	'	'	'	'	'	'	'	'	86	-55	149
Consolidation Eliminations Member	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
NET SALES	'	'	'	'	'	'	'	'	-423	-376	-324
COST OF SALES	'	'	'	'	'	'	'	'	-423	-376	-324
Gross margin	'	'	'	'	'	'	'	'	0	0	0
OPERATING EXPENSES	'	'	'	'	'	'	'	'	'	'	'
Marketing and administrative expenses	'	'	'	'	'	'	'	'	0	0	0
Science and technology expenses	'	'	'	'	'	'	'	'	0	0	0
Charges related to cost reduction actions	'	'	'	'	'	'	'	'	0	0	0
Other Expenses, net	'	'	'	'	'	'	'	'	0	0	0
Total operating expenses	'	'	'	'	'	'	'	'	0	0	0
Earnings Before Interest And Taxes	'	'	'	'	'	'	'	'	0	0	0
Interest expense, net	'	'	'	'	'	'	'	'	0	0	0
EARNINGS BEFORE TAXES	'	'	'	'	'	'	'	'	0	0	0
Income Tax Expense (Benefit)	'	'	'	'	'	'	'	'	0	0	0
Income (Loss) From Continuing Operations Before Minority Interest and Income (Loss) From Equity Method Investments	'	'	'	'	'	'	'	'	0	0	0
Equity in net earnings of subsidiaries	'	'	'	'	'	'	'	'	-408	-76	-463
Equity in net earnings of affiliates	'	'	'	'	'	'	'	'	0	0	0
NET EARNINGS	'	'	'	'	'	'	'	'	-408	-76	-463
Less: Net earnings attributable to noncontrolling interests	'	'	'	'	'	'	'	'	0	0	0
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	'	'	'	'	'	'	'	'	($408)	($76)	($463)

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE EARNINGS (DETAIL) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Financial Statements Captions [Line Items]	'	'	'
NET EARNINGS	$205	($16)	$281
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	-28	5	'
Pension and other postretirement adjustment (net of tax)	95	-53	'
Deferred loss on hedging transactions (net of tax)	1	2	'
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest	1	3	5
Comprehensive Income Net Of Tax	271	-68	155
Parent Company Member	'	'	'
Condensed Financial Statements Captions [Line Items]	'	'	'
NET EARNINGS	204	-19	276
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	-28	5	-39
Pension and other postretirement adjustment (net of tax)	94	-56	-80
Deferred loss on hedging transactions (net of tax)	'	2	-2
Comprehensive Income, Net of Tax, Including Portion Attributable to Noncontrolling Interest	271	-68	155
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest	0	0	0
Comprehensive Income Net Of Tax	271	-68	155
Guarantor Subsidiaries Member	'	'	'
Condensed Financial Statements Captions [Line Items]	'	'	'
NET EARNINGS	322	131	314
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	0	0	0
Pension and other postretirement adjustment (net of tax)	0	0	0
Deferred loss on hedging transactions (net of tax)	0	0	0
Comprehensive Income, Net of Tax, Including Portion Attributable to Noncontrolling Interest	322	131	314
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest	0	0	0
Comprehensive Income Net Of Tax	322	131	314
Non Guarantor Subsidiaries Member	'	'	'
Condensed Financial Statements Captions [Line Items]	'	'	'
NET EARNINGS	87	-52	154
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	0	0	0
Pension and other postretirement adjustment (net of tax)	0	0	0
Deferred loss on hedging transactions (net of tax)	0	0	0
Comprehensive Income, Net of Tax, Including Portion Attributable to Noncontrolling Interest	87	-52	154
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest	1	3	5
Comprehensive Income Net Of Tax	86	-55	149
Consolidation Eliminations Member	'	'	'
Condensed Financial Statements Captions [Line Items]	'	'	'
NET EARNINGS	-408	-76	-463
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	0	0	0
Pension and other postretirement adjustment (net of tax)	0	0	0
Deferred loss on hedging transactions (net of tax)	0	0	0
Comprehensive Income, Net of Tax, Including Portion Attributable to Noncontrolling Interest	-408	-76	-463
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest	0	0	0
Comprehensive Income Net Of Tax	($408)	($76)	($463)

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEET (DETAIL) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified
CURRENT ASSETS	'		'		'	'
Cash and cash equivalents	$57		$55		$52	$52
Receivables, less allowances	683		600		'	'
Inventories	810		786		'	'
Assets held for sale - current	29		0		'	'
Other current assets	269		176		'	'
Total current assets	1,848		1,617		'	'
Property, plant and equipment, net	2,932		2,903		'	'
Goodwill	1,166		1,143		'	'
Intangible assets	1,040		1,045		'	'
Deferred income taxes	436		604		'	'
Other non-current assets	225		256		'	'
TOTAL ASSETS	7,647		7,568		'	'
CURRENT LIABILITIES	'		'		'	'
Accounts Payable and Accrued Liabilities, Current	988		907		'	'
Short-term debt	1		5		'	'
Long-term debt - current portion	3		4		'	'
Total current liabilities	992		916		'	'
Long-term debt, net of current portion	2,024		2,076		'	'
Pension plan liability	336		480		'	'
Other employee benefits liability	242		274		'	'
Deferred income tax liability	23		38		'	'
Other liabilities	200		209		'	'
Commitments and Contingencies	'		'		'	'
OWENS CORNING STOCKHOLDERS' EQUITY	'		'		'	'
Additional paid in capital	3,938		3,925		'	'
Accumulated earnings (deficit)	655		451		'	'
Accumulated other comprehensive deficit	-297		-364		'	'
Cost of common stock in treasury	-504	[1]	-475	[1]	'	'
Total Owens Corning stockholders' equity	3,793		3,538		'	'
Noncontrolling interest	37		37		'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,830		3,575		3,741	3,686
TOTAL LIABILITIES AND EQUITY	7,647		7,568		'	'
Parent Company Member	'		'		'	'
CURRENT ASSETS	'		'		'	'
Cash and cash equivalents	0		0		0	'
Receivables, less allowances	0		0		'	'
Due From Affiliate Current	0		0		'	'
Inventories	0		0		'	'
Assets held for sale - current	'		0		'	'
Other current assets	45		5		'	'
Total current assets	45		5		'	'
Equity Method Investments	7,228		6,877		'	'
Due From Affiliate Noncurrent	0		0		'	'
Property, plant and equipment, net	362		374		'	'
Goodwill	0		0		'	'
Intangible assets	0		0		'	'
Deferred income taxes	14		54		'	'
Assets Held for Sale - Non-Current	'		0		'	'
Other non-current assets	31		62		'	'
TOTAL ASSETS	7,680		7,372		'	'
CURRENT LIABILITIES	'		'		'	'
Accounts Payable and Accrued Liabilities, Current	15		8		'	'
Due To Affiliate Current	1,688		1,419		'	'
Short-term debt	0		0		'	'
Long-term debt - current portion	0		0		'	'
Liabilities held for sale - current	'		0		'	'
Total current liabilities	1,703		1,427		'	'
Long-term debt, net of current portion	1,814		1,884		'	'
Due To Affiliate Noncurrent	0		0		'	'
Pension plan liability	213		331		'	'
Other employee benefits liability	0		0		'	'
Deferred income tax liability	0		0		'	'
Other liabilities	158		192		'	'
OWENS CORNING STOCKHOLDERS' EQUITY	'		'		'	'
Additional paid in capital	3,938		3,925		'	'
Accumulated earnings (deficit)	655		451		'	'
Accumulated other comprehensive deficit	-297		-364		'	'
Cost of common stock in treasury	-504		-475		'	'
Total Owens Corning stockholders' equity	3,793		3,538		'	'
Noncontrolling interest	0		0		'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,793		3,538		'	'
TOTAL LIABILITIES AND EQUITY	7,681		7,372		'	'
Guarantor Subsidiaries Member	'		'		'	'
CURRENT ASSETS	'		'		'	'
Cash and cash equivalents	3		3		0	'
Receivables, less allowances	0		0		'	'
Due From Affiliate Current	2,664		2,528		'	'
Inventories	487		473		'	'
Assets held for sale - current	'		0		'	'
Other current assets	141		75		'	'
Total current assets	3,295		3,079		'	'
Equity Method Investments	2,557		2,489		'	'
Due From Affiliate Noncurrent	67		65		'	'
Property, plant and equipment, net	1,313		1,294		'	'
Goodwill	1,127		1,068		'	'
Intangible assets	1,015		939		'	'
Deferred income taxes	416		525		'	'
Assets Held for Sale - Non-Current	'		0		'	'
Other non-current assets	64		74		'	'
TOTAL ASSETS	9,854		9,533		'	'
CURRENT LIABILITIES	'		'		'	'
Accounts Payable and Accrued Liabilities, Current	608		620		'	'
Due To Affiliate Current	0		0		'	'
Short-term debt	0		0		'	'
Long-term debt - current portion	2		2		'	'
Liabilities held for sale - current	'		0		'	'
Total current liabilities	610		622		'	'
Long-term debt, net of current portion	26		28		'	'
Due To Affiliate Noncurrent	959		1,022		'	'
Pension plan liability	0		0		'	'
Other employee benefits liability	226		254		'	'
Deferred income tax liability	0		0		'	'
Other liabilities	246		172		'	'
OWENS CORNING STOCKHOLDERS' EQUITY	'		'		'	'
Additional paid in capital	6,572		6,541		'	'
Accumulated earnings (deficit)	1,215		894		'	'
Accumulated other comprehensive deficit	0		0		'	'
Cost of common stock in treasury	0		0		'	'
Total Owens Corning stockholders' equity	7,787		7,435		'	'
Noncontrolling interest	0		0		'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	7,787		7,435		'	'
TOTAL LIABILITIES AND EQUITY	9,854		9,533		'	'
Non Guarantor Subsidiaries Member	'		'		'	'
CURRENT ASSETS	'		'		'	'
Cash and cash equivalents	54		52		52	'
Receivables, less allowances	683		600		'	'
Due From Affiliate Current	0		0		'	'
Inventories	323		313		'	'
Assets held for sale - current	'		0		'	'
Other current assets	83		96		'	'
Total current assets	1,172		1,061		'	'
Equity Method Investments	558		558		'	'
Due From Affiliate Noncurrent	959		1,022		'	'
Property, plant and equipment, net	1,257		1,235		'	'
Goodwill	39		75		'	'
Intangible assets	271		302		'	'
Deferred income taxes	6		25		'	'
Assets Held for Sale - Non-Current	'		0		'	'
Other non-current assets	130		120		'	'
TOTAL ASSETS	4,392		4,398		'	'
CURRENT LIABILITIES	'		'		'	'
Accounts Payable and Accrued Liabilities, Current	365		279		'	'
Due To Affiliate Current	976		1,109		'	'
Short-term debt	1		5		'	'
Long-term debt - current portion	1		2		'	'
Liabilities held for sale - current	'		0		'	'
Total current liabilities	1,343		1,395		'	'
Long-term debt, net of current portion	184		164		'	'
Due To Affiliate Noncurrent	67		65		'	'
Pension plan liability	123		149		'	'
Other employee benefits liability	16		20		'	'
Deferred income tax liability	23		38		'	'
Other liabilities	42		41		'	'
OWENS CORNING STOCKHOLDERS' EQUITY	'		'		'	'
Additional paid in capital	2,045		2,062		'	'
Accumulated earnings (deficit)	513		427		'	'
Accumulated other comprehensive deficit	0		0		'	'
Cost of common stock in treasury	0		0		'	'
Total Owens Corning stockholders' equity	2,558		2,489		'	'
Noncontrolling interest	37		37		'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	2,595		2,526		'	'
TOTAL LIABILITIES AND EQUITY	4,393		4,398		'	'
Consolidation Eliminations Member	'		'		'	'
CURRENT ASSETS	'		'		'	'
Cash and cash equivalents	0		0		0	'
Receivables, less allowances	0		0		'	'
Due From Affiliate Current	-2,664		-2,528		'	'
Inventories	0		0		'	'
Assets held for sale - current	'		0		'	'
Other current assets	0		0		'	'
Total current assets	-2,664		-2,528		'	'
Equity Method Investments	-10,343		-9,924		'	'
Due From Affiliate Noncurrent	-1,026		-1,087		'	'
Property, plant and equipment, net	0		0		'	'
Goodwill	0		0		'	'
Intangible assets	-246		-196		'	'
Deferred income taxes	0		0		'	'
Assets Held for Sale - Non-Current	'		0		'	'
Other non-current assets	0		0		'	'
TOTAL ASSETS	-14,279		-13,735		'	'
CURRENT LIABILITIES	'		'		'	'
Accounts Payable and Accrued Liabilities, Current	0		0		'	'
Due To Affiliate Current	-2,664		-2,528		'	'
Short-term debt	0		0		'	'
Long-term debt - current portion	0		0		'	'
Liabilities held for sale - current	'		0		'	'
Total current liabilities	-2,664		-2,528		'	'
Long-term debt, net of current portion	0		0		'	'
Due To Affiliate Noncurrent	-1,026		-1,087		'	'
Pension plan liability	0		0		'	'
Other employee benefits liability	0		0		'	'
Deferred income tax liability	0		0		'	'
Other liabilities	-246		-196		'	'
OWENS CORNING STOCKHOLDERS' EQUITY	'		'		'	'
Additional paid in capital	-8,617		-8,603		'	'
Accumulated earnings (deficit)	-1,728		-1,321		'	'
Accumulated other comprehensive deficit	0		0		'	'
Cost of common stock in treasury	0		0		'	'
Total Owens Corning stockholders' equity	-10,345		-9,924		'	'
Noncontrolling interest	0		0		'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	-10,345		-9,924		'	'
TOTAL LIABILITIES AND EQUITY	($14,281)		($13,735)		'	'
[1]	17.7 shares at Dec. 31, 2013 and 17.3 shares at Dec. 31, 2012

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (DETAIL) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
NET CASH FLOW PROVIDED BY (USED FOR) OPERATING ACTIVITIES ABSTRACT	'	'	'
NET EARNINGS	$205	($16)	$281
Adjustments to reconcile net earnings to cash provided by (used for) operating activities:	'	'	'
Depreciation and amortization	332	349	318
Gain on sale of business and fixed assets	-6	-17	-30
Change in deferred income taxes	54	-59	55
Provision for pension and other employee benefits liabilities	23	36	36
Share Based Compensation	28	24	21
Other non-cash	-18	-14	-22
Change in working capital	'	'	'
Pension fund contribution	-39	-50	-117
Payments for other employee benefits liabilities	-22	-22	-24
Other	-27	39	33
Net cash flow provided by (used for) operating activities	418	330	289
NET CASH FLOW USED FOR INVESTING ACTIVITIES ABSTRACT	'	'	'
Additions to plant and equipment	-353	-332	-442
Payments to Acquire Businesses, Net of Cash Acquired	62	0	84
Net cash flow used for investing activities	-307	-253	-445
proceedsfromdivestitureofbusinessesandinterestsinaffiliates	16	59	81
NET CASH FLOW PROVIDED BY (USED FOR) FINANCING ACTIVITIES ABSTRACT	'	'	'
Proceeds from senior revolving credit and receivables securitization facilities	1,063	1,877	1,912
Payments on senior revolving credit and receivables securitization facilities	-1,103	-1,957	-1,630
Proceeds from long-term debt	0	599	6
Payments on long-term debt	-2	-441	-10
Net decrease in short-term debt	-4	-23	26
Purchase of noncontrolling interest	0	-22	0
Purchase of treasury stock	-63	-113	-138
Other Financing	2	4	8
Net cash flow provided by (used for) financing activities	-107	-76	174
Effect of exchange rate changes on cash	-2	2	-18
Net decrease in cash and cash equivalents	2	3	0
Cash and cash equivalents at beginning of period	55	52	52
Cash and cash equivalents at end of period	57	55	52
Parent Company Member	'	'	'
NET CASH FLOW PROVIDED BY (USED FOR) OPERATING ACTIVITIES ABSTRACT	'	'	'
NET EARNINGS	204	-19	276
Adjustments to reconcile net earnings to cash provided by (used for) operating activities:	'	'	'
Net cash flow provided by (used for) operating activities	126	-108	-70
NET CASH FLOW USED FOR INVESTING ACTIVITIES ABSTRACT	'	'	'
Additions to plant and equipment	-10	-35	-7
Payments to Acquire Businesses, Net of Cash Acquired	0	0	'
Net cash flow used for investing activities	6	7	-7
NET CASH FLOW PROVIDED BY (USED FOR) FINANCING ACTIVITIES ABSTRACT	'	'	'
Proceeds from senior revolving credit and receivables securitization facilities	940	1,564	1,547
Payments on senior revolving credit and receivables securitization facilities	-1,002	-1,627	-1,423
Proceeds from long-term debt	0	599	0
Payments on long-term debt	0	-430	0
Net decrease in short-term debt	0	-8	8
Purchase of noncontrolling interest	0	'	0
Purchase of treasury stock	-63	-113	-138
Proceeds from Loans and Advances from Parent	'	112	72
Intercompany Loans	-9	'	'
Other Financing	2	4	8
Net cash flow provided by (used for) financing activities	-132	101	74
Effect of exchange rate changes on cash	0	0	0
Net decrease in cash and cash equivalents	0	0	-3
Cash and cash equivalents at beginning of period	0	0	'
Cash and cash equivalents at end of period	0	0	0
Guarantor Subsidiaries Member	'	'	'
NET CASH FLOW PROVIDED BY (USED FOR) OPERATING ACTIVITIES ABSTRACT	'	'	'
NET EARNINGS	322	131	314
Adjustments to reconcile net earnings to cash provided by (used for) operating activities:	'	'	'
Net cash flow provided by (used for) operating activities	67	239	236
NET CASH FLOW USED FOR INVESTING ACTIVITIES ABSTRACT	'	'	'
Additions to plant and equipment	-143	-174	-222
Payments to Acquire Businesses, Net of Cash Acquired	51	-20	'
Net cash flow used for investing activities	-136	-149	-303
NET CASH FLOW PROVIDED BY (USED FOR) FINANCING ACTIVITIES ABSTRACT	'	'	'
Proceeds from senior revolving credit and receivables securitization facilities	0	0	0
Payments on senior revolving credit and receivables securitization facilities	0	0	0
Proceeds from long-term debt	0	0	0
Payments on long-term debt	0	0	0
Net decrease in short-term debt	0	0	0
Purchase of noncontrolling interest	0	'	0
Purchase of treasury stock	0	0	0
Proceeds from Loans and Advances from Parent	'	-65	67
Intercompany Loans	69	'	'
Other Financing	0	0	0
Net cash flow provided by (used for) financing activities	69	-87	67
Effect of exchange rate changes on cash	0	0	0
Net decrease in cash and cash equivalents	0	3	0
Cash and cash equivalents at beginning of period	3	0	'
Cash and cash equivalents at end of period	3	3	0
Non Guarantor Subsidiaries Member	'	'	'
NET CASH FLOW PROVIDED BY (USED FOR) OPERATING ACTIVITIES ABSTRACT	'	'	'
NET EARNINGS	87	-52	154
Adjustments to reconcile net earnings to cash provided by (used for) operating activities:	'	'	'
Net cash flow provided by (used for) operating activities	225	199	123
NET CASH FLOW USED FOR INVESTING ACTIVITIES ABSTRACT	'	'	'
Additions to plant and equipment	-200	-123	-213
Payments to Acquire Businesses, Net of Cash Acquired	11	0	'
Net cash flow used for investing activities	-177	-111	-135
NET CASH FLOW PROVIDED BY (USED FOR) FINANCING ACTIVITIES ABSTRACT	'	'	'
Proceeds from senior revolving credit and receivables securitization facilities	123	313	365
Payments on senior revolving credit and receivables securitization facilities	-101	-330	-207
Proceeds from long-term debt	0	0	6
Payments on long-term debt	-2	-11	-10
Net decrease in short-term debt	-4	-15	18
Purchase of noncontrolling interest	0	'	0
Purchase of treasury stock	0	0	0
Proceeds from Loans and Advances from Parent	'	-47	-139
Intercompany Loans	-60	'	'
Other Financing	0	0	0
Net cash flow provided by (used for) financing activities	-44	-90	33
Effect of exchange rate changes on cash	-2	2	-18
Net decrease in cash and cash equivalents	2	0	3
Cash and cash equivalents at beginning of period	52	52	'
Cash and cash equivalents at end of period	54	52	52
Consolidation Eliminations Member	'	'	'
NET CASH FLOW PROVIDED BY (USED FOR) OPERATING ACTIVITIES ABSTRACT	'	'	'
NET EARNINGS	-408	-76	-463
Adjustments to reconcile net earnings to cash provided by (used for) operating activities:	'	'	'
Net cash flow provided by (used for) operating activities	0	0	0
NET CASH FLOW USED FOR INVESTING ACTIVITIES ABSTRACT	'	'	'
Additions to plant and equipment	0	0	0
Payments to Acquire Businesses, Net of Cash Acquired	0	0	'
Net cash flow used for investing activities	0	0	0
NET CASH FLOW PROVIDED BY (USED FOR) FINANCING ACTIVITIES ABSTRACT	'	'	'
Proceeds from senior revolving credit and receivables securitization facilities	0	0	0
Payments on senior revolving credit and receivables securitization facilities	0	0	0
Proceeds from long-term debt	0	0	0
Payments on long-term debt	0	0	0
Net decrease in short-term debt	0	0	0
Purchase of noncontrolling interest	0	'	0
Purchase of treasury stock	0	0	0
Proceeds from Loans and Advances from Parent	'	0	0
Intercompany Loans	0	'	'
Other Financing	0	0	0
Net cash flow provided by (used for) financing activities	0	0	0
Effect of exchange rate changes on cash	0	0	0
Net decrease in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of period	0	0	'
Cash and cash equivalents at end of period	$0	$0	$0

GENERAL_DETAIL

GENERAL (DETAIL) (USD $)	3 Months Ended				12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
Prior Period Adjustment Abstract	'	'	'	'	'
Prior Period Adjustment, Revenue, Pre Tax	'	'	$1	'	$4
Prior Period Adjustment, Revenue, After Tax	'	'	1	'	4
Prior Period Adjustment, Expense, Pre Tax	3	7	'	4	'
Prior Period Adjustment, Expense, After Tax	$2	$3	'	$3	'

SUMMARY_OF_SIGNIFICANT_ACCOUNT2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (DETAIL) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounting Policies [Abstract]	'	'	'
Amortization of Intangible Assets	$22	$21	$22
Depreciation	310	328	296
Foreign Currency Transaction Loss, before Tax	3	'	'
Marketing and Advertising Expense	$105	$109	$105
Building and Building Improvements [Member]	'	'	'
Property Plant And Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Estimated Useful Lives	'15 – 40 years	'	'
Furnaces [Member]	'	'	'
Property Plant And Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Estimated Useful Lives	' 4 – 15 years	'	'
Technology Equipment [Member]	'	'	'
Property Plant And Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Estimated Useful Lives	'5 – 10 years	'	'
Equipment [Member]	'	'	'
Property Plant And Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Estimated Useful Lives	' 5 – 20 years	'	'

SEGMENT_INFORMATION_DETAIL

SEGMENT INFORMATION (DETAIL) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

TOTAL ASSETS

$7,647

'

'

'

$7,568

'

'

'

$7,647

$7,568

'

'

Property, plant and equipment, net

2,932

'

'

'

2,903

'

'

'

2,932

2,903

'

'

Depreciation and amortization

'

'

'

'

'

'

'

'

332

349

318

'

Additions to plant and equipment

'

'

'

'

'

'

'

'

353

332

442

'

Restructuring Charges and Related Items

'

'

'

'

'

'

'

'

-26

-136

-17

'

(Gain) Loss on Sale of Assets and Other Expenses

'

'

'

'

'

'

'

'

15

-9

0

'

Employee emergence equity program expense

'

'

'

'

'

'

'

'

0

0

0

'

General Corporate Expense

'

'

'

'

'

'

'

'

-108

-91

-71

'

Earnings Before Interest And Taxes

104

106

118

57

16

59

85

-12

385

148

461

'

Deferred Tax Assets (Liabilities), Net

573

'

'

'

685

'

'

'

573

685

'

'

Investments in and Advances to Affiliates, Balance, Principal Amount

51

'

'

'

51

'

'

'

51

51

'

'

Corporate Property, Plant and Equipment, Net

547

'

'

'

467

'

'

'

547

467

'

'

Cash and cash equivalents

57

'

'

'

55

'

'

'

57

55

52

52

United States [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

3,644

3,504

3,552

'

Property, plant and equipment, net

1,688

'

'

'

1,708

'

'

'

1,688

1,708

'

'

Europe [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

545

558

619

'

Property, plant and equipment, net

520

'

'

'

513

'

'

'

520

513

'

'

Asia Pacific [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

627

639

674

'

Property, plant and equipment, net

375

'

'

'

350

'

'

'

375

350

'

'

Canada [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Property, plant and equipment, net

131

'

'

'

150

'

'

'

131

150

'

'

Other Geographical [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

479

471

490

'

Property, plant and equipment, net

218

'

'

'

182

'

'

'

218

182

'

'

Composites [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

1,845

1,859

1,976

'

Income (Loss) from Operations before Interest and Taxes Attributable to Segments

'

'

'

'

'

'

'

'

98

91

201

'

TOTAL ASSETS

2,379

'

'

'

2,414

'

'

'

2,379

2,414

'

'

Depreciation and amortization

'

'

'

'

'

'

'

'

130

123

128

'

Additions to plant and equipment

'

'

'

'

'

'

'

'

155

167

256

'

Building Materials [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

3,609

3,482

3,537

'

Income (Loss) from Operations before Interest and Taxes Attributable to Segments

'

'

'

'

'

'

'

'

426

293

332

'

TOTAL ASSETS

4,011

'

'

'

3,896

'

'

'

4,011

3,896

'

'

Depreciation and amortization

'

'

'

'

'

'

'

'

142

143

157

'

Additions to plant and equipment

'

'

'

'

'

'

'

'

167

127

151

'

General Corporate [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Depreciation and amortization

'

'

'

'

'

'

'

'

60

83

33

'

Additions to plant and equipment

'

'

'

'

'

'

'

'

31

38

35

'

Corporate Eliminations [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

-159

-169

-178

'

Roofing [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

1,967

2,014

2,169

'

Insulation [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

1,642

1,468

1,368

'

Total Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting, Significant Reconciling Item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

5,454

5,341

5,513

'

Income (Loss) from Operations before Interest and Taxes Attributable to Segments

'

'

'

'

'

'

'

'

524

384

533

'

TOTAL ASSETS

6,390

'

'

'

6,310

'

'

'

6,390

6,310

'

'

Depreciation and amortization

'

'

'

'

'

'

'

'

272

266

285

'

Additions to plant and equipment

'

'

'

'

'

'

'

'

$322

$294

$407

'

INVENTORIES_DETAIL

INVENTORIES (DETAIL) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Inventory Finished Goods	$580	$554
Inventory Raw Materials And Supplies	230	232
Inventory, Net, Total	$810	$786

DERIVATIVE_FINANCIAL_INSTRUMEN2

DERIVATIVE FINANCIAL INSTRUMENTS BALANCE SHEET (DETAIL) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Other Current Assets [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Natural Gas Contract [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
DerivativeAssetFairValueNet	$1	$0
Other Current Assets [Member] | Nondesignated [Member] | Foreign Exchange Contract Member	'	'
Derivatives, Fair Value [Line Items]	'	'
DerivativeAssetFairValueNet	0	1
Accounts Payable and Accrued Liabilities [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Interest Rate Swap Member	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Liability, Fair Value, Net	3	0
Accounts Payable and Accrued Liabilities [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Natural Gas Contract [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Liability, Fair Value, Net	0	1
Accounts Payable and Accrued Liabilities [Member] | Nondesignated [Member] | Foreign Exchange Contract Member	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Liability, Fair Value, Net	1	3
Other Comprehensive Income Member | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Gain Recognized in OCI, Effective Portion	1	0
Loss Recognized in OCI, Effective Portion	$0	$1

DERIVATIVE_FINANCIAL_INSTRUMEN3

DERIVATIVE FINANCIAL INSTRUMENTS INCOME STMT (DETAIL) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments Gain Loss [Line Items]	'	'	'
Derivative Instruments Loss Recognized In Income	$1	'	'
Cost Of Sales [Member] | Designated as Hedging Instrument [Member] | Natural Gas Contract [Member]	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'
Derivative Instruments Loss Reclassified From Accumulated OCI Into Income Effective Portion	1,000,000	5,000,000	4,000,000
Interest Expense Member | Designated as Hedging Instrument [Member] | Interest Rate Swap Member	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'
Derivative Instruments Loss Reclassified From Accumulated OCI Into Income Effective Portion	-1,000,000	0	2,000,000
Other Expense Member | Nondesignated [Member] | Natural Gas Contract [Member]	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'
Derivative Instruments Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing	0	0	-1,000,000
Other Expense Member | Nondesignated [Member] | Foreign Exchange Contract Member	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'
Derivative Instruments Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing	$12,000,000	$17,000,000	($14,000,000)

GOODWILL_AND_OTHER_INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLE ASSETS (DETAIL) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Intangible Assets [Line Items]	'	'
Finite Lived Intangible Assets Gross	$1,198,000,000	$1,181,000,000
Finite Lived Intangible Assets Accumulated Amortization	-158,000,000	-136,000,000
Finite-Lived Intangible Assets, Net, Total	1,040,000,000	1,045,000,000
Intangible assets	1,040,000,000	1,045,000,000
Goodwill balance	1,166,000,000	1,143,000,000
Intangible Asset Expense Five Year Average	23	'
Finite Lived Intangible Assets Net	1,040,000,000	1,045,000,000
Customer Relationships [Member]	'	'
Intangible Assets [Line Items]	'	'
Finite Lived Intangible Assets Gross	181,000,000	169,000,000
Finite Lived Intangible Assets Accumulated Amortization	-68,000,000	-58,000,000
Finite-Lived Intangible Assets, Net, Total	113,000,000	111,000,000
Finite Lived Intangible Assets Net	113,000,000	111,000,000
Technology [Member]	'	'
Intangible Assets [Line Items]	'	'
Finite Lived Intangible Assets Gross	195,000,000	198,000,000
Finite Lived Intangible Assets Accumulated Amortization	-74,000,000	-64,000,000
Finite-Lived Intangible Assets, Net, Total	121,000,000	134,000,000
Finite Lived Intangible Assets Net	121,000,000	134,000,000
Franchise and Other Agreements [Member]	'	'
Intangible Assets [Line Items]	'	'
Finite Lived Intangible Assets Gross	36,000,000	37,000,000
Finite Lived Intangible Assets Accumulated Amortization	-16,000,000	-14,000,000
Finite-Lived Intangible Assets, Net, Total	20,000,000	23,000,000
Finite Lived Intangible Assets Net	20,000,000	23,000,000
Trademarks [Member]	'	'
Intangible Assets [Line Items]	'	'
Finite Lived Intangible Assets Gross	786,000,000	777,000,000
Finite-Lived Intangible Assets, Net, Total	786,000,000	777,000,000
Finite Lived Intangible Assets Net	$786,000,000	$777,000,000

GOODWILL_ROLLFORWARD_DETAIL

GOODWILL ROLLFORWARD (DETAIL) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Goodwill [Roll Forward]	'
Goodwill, Beginning Balance	$1,143
Goodwill, Acquired During Period	24
Goodwill, Translation Adjustments	1
Goodwill, Ending Balance	1,166
Composites [Member]	'
Goodwill [Roll Forward]	'
Goodwill, Beginning Balance	56
Goodwill, Acquired During Period	2
Goodwill, Translation Adjustments	1
Goodwill, Ending Balance	57
Building Materials [Member]	'
Goodwill [Roll Forward]	'
Goodwill, Beginning Balance	1,087
Goodwill, Acquired During Period	22
Goodwill, Translation Adjustments	0
Goodwill, Ending Balance	$1,109

PROPERTY_PLANT_AND_EQUIPMENT_D

PROPERTY, PLANT AND EQUIPMENT (DETAIL) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Property Plant And Equipment [Line Items]	'	'
Property Plant And Equipment Gross	$4,547	$4,381
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment	1,615	1,478
Property, Plant and Equipment, Net, Total	2,932	2,903
Precious Metals Percentage	17.00%	18.00%
Precious Metals Depletion Percentage	3.00%	'
Land Member	'	'
Property Plant And Equipment [Line Items]	'	'
Property Plant And Equipment Gross	210	222
Buildings and Leasehold Improvements [Member]	'	'
Property Plant And Equipment [Line Items]	'	'
Property Plant And Equipment Gross	811	789
Machinery And Equipment Member	'	'
Property Plant And Equipment [Line Items]	'	'
Property Plant And Equipment Gross	3,353	3,223
Construction In Progress Member	'	'
Property Plant And Equipment [Line Items]	'	'
Property Plant And Equipment Gross	$173	$147

ACQUISITIONS_DETAIL

ACQUISITIONS (DETAIL) (USD $)	Dec. 31, 2013
BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract	'
BusinessAcquisitionCostOfAcquiredEntityPurchasePrice	$52
BusinessAcquisition cash paid	10
BusinessAcquisitionCostOfAcquiredEntityDeferredPayments	15
BusinessAcquisitionPurchasePriceAllocationAbstract	'
BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets	19
BusinessAcquisition goodwill	$24

CHANGES_IN_NONCONTROLLING_INTE2

CHANGES IN NONCONTROLLING INTERESTS (DETAIL) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Noncontrolling Interest [Line Items]	'	'	'
Noncontrolling Interest, Payments to Noncontrolling Interests	$22	'	'
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	6	-22,000,000	-3,000,000
ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangeDueToNetIncomeAttributableToParentAndEffectsOfChangesNet	204,000,000	-35,000,000	276,000,000
NEI [Member]	'	'	'
Noncontrolling Interest [Line Items]	'	'	'
ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesPurchaseOfInterestByParent	$0	($16,000,000)	$0

INVESTMENTS_IN_AFFILIATES_DETA

INVESTMENTS IN AFFILIATES (DETAIL) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
ScheduleOfEquityMethodInvestments	'	'	'
EquityMethodInvestmentOwnershipPercentage	50.00%	50.00%	'
EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	$50	$53	'
EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	90	85	'
EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	25	22	'
EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	23	24	'
Equity Method Investment, Summarized Financial Information, Revenue	138	140	143
EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss	7	11	14
EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	$1	$5	$5
Arabian Fiberglass [Member]	'	'	'
ScheduleOfEquityMethodInvestments	'	'	'
EquityMethodInvestmentOwnershipPercentage	49.00%	'	'
NeptcoLLCMember [Member]	'	'	'
ScheduleOfEquityMethodInvestments	'	'	'
EquityMethodInvestmentOwnershipPercentage	50.00%	'	'

DIVESTITURES_DETAIL

DIVESTITURES (DETAIL) (USD $)	12 Months Ended
	Dec. 31, 2013
Business Divestitures [Line Items]	'
Divestiture, Amount of Consideration Received	$34
Divestiture, Amount of Future Consideration Receivable	35
Divestiture, Amount of Future Consideration Receivable, Present Value	70
Gain loss on disposition of assets (high)	40
GainLossOnDispositionOfAssets (Low)	$30

ASSETS_AND_LIABILITIES_HELD_FO1

ASSETS AND LIABILITIES HELD FOR SALE (DETAIL) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent [Line Item]	'	'
Assets held for sale - current	$29	$0

WARRANTIES_DETAIL

WARRANTIES (DETAIL) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Movement In Standard And Extended Product Warranty Increase Decrease Roll Forward	'	'
Product Warranty Accrual, Beginning Balance	'	$38
Product Warranty Accrual Warranties Issued	21	24
Product Warranty Accrual Payments	-21	-21
Product Warranty Accrual, Ending Balance	$41	'

COST_REDUCTION_ACTIONS_DETAIL

COST REDUCTION ACTIONS (DETAIL) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring and Related Cost, Incurred Cost	$6	'	'
Restructuring Reserve Roll Forward	'	'	'
Charges related to cost reduction actions	8	51	0
Cost Reduction Actions 2012 [Member]	'	'	'
Restructuring Reserve Roll Forward	'	'	'
Charges related to cost reduction actions	'	2	'
Restructuring Reserve Settled With Cash	'	-21	'
Restructuring Reserve, Ending Balance	26	45	'
Restructuring And Related Cost Cost Incurred To Date	'	53	'
Cost Reduction Actions 2012 [Member] | Composites [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Accelerated Depreciation	9	55	'
Other costs related to restructuring	9	27	'
Restructuring and Related Cost, Incurred Cost	20	131	'
Cost Reduction Actions 2012 [Member] | Building Materials [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Severance Costs	'	2	'
Other costs related to restructuring	'	3	'
Restructuring and Related Cost, Incurred Cost	'	5	'
Cost Reduction Actions 2010 [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Severance Costs	'	'	55
Accelerated Depreciation	'	'	9
Restructuring and Related Cost, Incurred Cost	'	'	9
Cost Reduction Actions 2013 [Member] | Composites [Member]	'	'	'
Restructuring Reserve Roll Forward	'	'	'
Restructuring Reserve, Ending Balance	6	'	'
Employee Severance Member | Cost Reduction Actions 2012 [Member] | Composites [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Severance Costs	2	49	'
Employee Severance Member | Cost Reduction Actions 2013 [Member] | Composites [Member]	'	'	'
Restructuring Reserve Roll Forward	'	'	'
Restructuring Reserve, Beginning Balance	0	'	'
Charges related to cost reduction actions	6	'	'
Restructuring Reserve Settled With Cash	0	'	'
Restructuring And Related Cost Cost Incurred To Date	$6	'	'

DEBT_DETAIL

DEBT (DETAIL) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Long-Term Debt [Line Items]	'	'
Fair Value Adjustment to Debt	$16	$26
Long Term Debt Current	3	4
Long Term Debt Noncurrent	2,027	2,080
Interest Rate Swap Agreement, Principal Amount	100	'
Receivables Purchase Agreement, Amount Outstanding	200	'
Short-term Debt [Abstract]	'	'
Short-term debt	1	5
Short Term Debt Weighted Average Interest Rate	2.20%	4.50%
Maturities of Long-term Debt [Abstract]	'	'
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	3	'
Long-term Debt, Maturities, Repayments of Principal in Year Two	3	'
Long-term Debt, Maturities, Repayments of Principal in Year Three	580	'
Long-term Debt, Maturities, Repayments of Principal in Year Four	3	'
Long-term Debt, Maturities, Repayments of Principal in Year Five	15	'
Long-term Debt, Maturities, Repayments of Principal after Year Five	1,423	'
Senior Notes Due 2016 [Member]	'	'
Long-Term Debt [Line Items]	'	'
Long Term Debt	400	400
Senior Notes Due 2036 [Member]	'	'
Long-Term Debt [Line Items]	'	'
Long Term Debt	540	540
Senior Notes Due 2019 [Member]	'	'
Long-Term Debt [Line Items]	'	'
Long Term Debt	248	247
Senior Notes Due 2022 [Member]	'	'
Long-Term Debt [Line Items]	'	'
Long Term Debt	599	599
Debt Instrument Interest Rate Stated Percentage	4.20%	'
Senior Revolving Credit Facility B [Member]	'	'
Long-Term Debt [Line Items]	'	'
Long Term Debt	12	73
Line Of Credit Facility Initiation Date	1-Nov-13	'
Line Of Credit Facility Expiration Date	1-Nov-18	'
Debt Instrument Face Amount	800	'
Letter Of Credit Member	'	'
Long-Term Debt [Line Items]	'	'
Line Of Credit Facility Maximum Borrowing Capacity	100	'
Line Of Credit Facility Amount Outstanding	15	'
Capital Lease Obligations Member	'	'
Long-Term Debt [Line Items]	'	'
Long Term Debt	49	52
Floating Rate Debt [Member]	'	'
Long-Term Debt [Line Items]	'	'
Long Term Debt	1	2
Letter Of Credit Under Receivables Purchase Agreement [Member]	'	'
Long-Term Debt [Line Items]	'	'
Long Term Debt	162	141
Receivables Purchase Agreement, Amount Outstanding	38	'
Receivables Purchase Agreement, Expiration Date	'July 2016	'
Receivables Purchase Agreement, Principal Amount	$250	'

PENSION_PLANS_AND_OTHER_POSTRE1

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (DETAIL) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Plans, Defined Benefit [Member]	'	'	'
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]	'	'	'
Defined Benefit Plan, Service Cost	$15,000,000	$14,000,000	$14,000,000
Defined Benefit Plan, Interest Cost	65,000,000	72,000,000	78,000,000
Defined Benefit Plan, Expected Return on Plan Assets	-84,000,000	-86,000,000	-91,000,000
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0	0	0
Defined Benefit Plan, Amortization of Gains (Losses)	20,000,000	29,000,000	15,000,000
Defined Benefit Plan, Net Periodic Benefit Cost	16,000,000	30,000,000	16,000,000
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanActualReturnOnPlanAssets	95,000,000	139,000,000	'
DefinedBenefitPlanForeignCurrencyExchangeRateChangesPlanAssets	-9,000,000	12,000,000	'
Defined Benefit Plan, Contributions by Employer	40,000,000	50,000,000	'
DefinedBenefitPlanBenefitsPaid	-100,000,000	-110,000,000	'
DefinedBenefitPlanPurchasesSalesAndSettlements	-7,000,000	-3,000,000	'
Defined Benefit Plan, Change in Fair Value of Plan Assets, Other	1,000,000	0	'
DefinedBenefitPlanFairValueOfPlanAssets	1,280,000,000	1,260,000,000	1,172,000,000
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]	'	'	'
DefinedBenefitPlanExpectedFutureBenefitPayments	98,000,000	'	'
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	102,000,000	'	'
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	102,000,000	'	'
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	101,000,000	'	'
DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	503,000,000	'	'
DefinedBenefitPlanChangeInBenefitObligationRollForward	'	'	'
Defined Benefit Plan, Service Cost	15,000,000	14,000,000	14,000,000
Defined Benefit Plan, Interest Cost	65,000,000	72,000,000	78,000,000
DefinedBenefitPlanActuarial	-88,000,000	145,000,000	'
DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	-8,000,000	16,000,000	'
DefinedBenefitPlanBenefitsPaid	-100,000,000	-110,000,000	'
DefinedBenefitPlanCurtailments	-7,000,000	-6,000,000	'
Defined Benefit Plan, Change in Benefit Obligation, Other	-2,000,000	2,000,000	'
DefinedBenefitPlanBenefitObligation	1,616,000,000	1,741,000,000	1,608,000,000
DefinedBenefitPlanFundedStatusOfPlanAbstract	'	'	'
DefinedBenefitPlanFundedStatusOfPlan	-336,000,000	-481,000,000	'
DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract	'	'	'
Defined Benefit Plan, Assets for Plan Benefits	2,000,000	1,000,000	'
PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	-2,000,000	-2,000,000	'
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	-336,000,000	-480,000,000	'
DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-336,000,000	-481,000,000	'
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract	'	'	'
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	1,476,000,000	1,698,000,000	'
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	1,462,000,000	1,674,000,000	'
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	1,151,000,000	1,221,000,000	'
Defined Benefit Plan, Plans with Plan Assets in Excess of Accumulated Benefit Obligations [Abstract]	'	'	'
Defined Benefit Plan, Pension Plans with Plan Assets in Excess of Accumulated Benefit Obligations, Aggregate Projected Benefit Obligation	132,000,000	43,000,000	'
Defined Benefit Plan, Pension Plans with Plan Assets in Excess of Accumulated Benefit Obligations, Aggregate Accumulated Benefit Obligation	121,000,000	33,000,000	'
Defined Benefit Plan, Pension Plans with Plan Assets in Excess of Accumulated Benefit Obligations, Aggregate Fair Value of Plan Assets	129,000,000	39,000,000	'
DefinedBenefitPlanAccumulatedBenefitObligation	1,583,000,000	1,707,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member	'	'	'
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]	'	'	'
Defined Benefit Plan, Service Cost	9,000,000	9,000,000	'
Defined Benefit Plan, Interest Cost	44,000,000	49,000,000	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanActualReturnOnPlanAssets	60,000,000	99,000,000	'
DefinedBenefitPlanForeignCurrencyExchangeRateChangesPlanAssets	0	0	'
Defined Benefit Plan, Contributions by Employer	20,000,000	32,000,000	'
DefinedBenefitPlanBenefitsPaid	-79,000,000	-87,000,000	'
DefinedBenefitPlanPurchasesSalesAndSettlements	0	0	'
Defined Benefit Plan, Change in Fair Value of Plan Assets, Other	1,000,000	0	'
DefinedBenefitPlanFairValueOfPlanAssets	858,000,000	856,000,000	812,000,000
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]	'	'	'
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	35	'	'
DefinedBenefitPlanChangeInBenefitObligationRollForward	'	'	'
Defined Benefit Plan, Service Cost	9,000,000	9,000,000	'
Defined Benefit Plan, Interest Cost	44,000,000	49,000,000	'
DefinedBenefitPlanActuarial	-91,000,000	111,000,000	'
DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	0	0	'
DefinedBenefitPlanBenefitsPaid	-79,000,000	-87,000,000	'
DefinedBenefitPlanCurtailments	0	0	'
Defined Benefit Plan, Change in Benefit Obligation, Other	0	0	'
DefinedBenefitPlanBenefitObligation	1,070,000,000	1,187,000,000	1,105,000,000
DefinedBenefitPlanFundedStatusOfPlanAbstract	'	'	'
DefinedBenefitPlanFundedStatusOfPlan	-212,000,000	-331,000,000	'
DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract	'	'	'
Defined Benefit Plan, Assets for Plan Benefits	0	0	'
PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	0	0	'
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	-212,000,000	-331,000,000	'
DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-212,000,000	-331,000,000	'
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract	'	'	'
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	'	4,000,000	'
DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	'	28,000,000	'
DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYear	'	32,000,000	'
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract	'	'	'
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	1,070,000,000	1,187,000,000	'
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	1,070,000,000	1,187,000,000	'
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	858,000,000	856,000,000	'
Defined Benefit Plan, Plans with Plan Assets in Excess of Accumulated Benefit Obligations [Abstract]	'	'	'
Defined Benefit Plan, Pension Plans with Plan Assets in Excess of Accumulated Benefit Obligations, Aggregate Projected Benefit Obligation	0	0	'
Defined Benefit Plan, Pension Plans with Plan Assets in Excess of Accumulated Benefit Obligations, Aggregate Accumulated Benefit Obligation	0	0	'
Defined Benefit Plan, Pension Plans with Plan Assets in Excess of Accumulated Benefit Obligations, Aggregate Fair Value of Plan Assets	0	0	'
DefinedBenefitPlanAccumulatedBenefitObligation	1,070,000,000	1,187,000,000	'
DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract	'	'	'
DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	4.65%	3.80%	'
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Expected Long-term Return on Assets	7.00%	7.50%	'
DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.00%	0.00%	'
DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract	'	'	'
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	3.80%	4.60%	5.30%
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	7.50%	7.25%	7.75%
DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract	'	'	'
Defined Contribution Plan, Company Match Regardless of Employee Contribution	2.00%	'	'
DefinedContributionPlanCostRecognized	29	30	30
DefinedBenefitPlanAssetsTargetAllocationsAbstract	'	'	'
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities	38.00%	'	'
Defined Benefit Plan, Target Allocation Percentage of Assets, Real Estate	3.00%	'	'
Defined Benefit Plan, Target Allocation Percentage of Assets, Real Assets	6.00%	'	'
Defined Benefit Plan, Target Allocation Percentage of Assets, Fixed Income Securities	47.00%	'	'
Defined Benefit Plan, Target Allocation Percentage of Assets, Absolute Return Securities	6.00%	'	'
United States Pension Plans Of US Entity Defined Benefit Member | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	578,000,000	619,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	280,000,000	237,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Equity Funds, Domestic, Actively Managed [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	138,000,000	129,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Equity Funds, Domestic, Actively Managed [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	100,000,000	129,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Equity Funds, Domestic, Actively Managed [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	38,000,000	0	'
United States Pension Plans Of US Entity Defined Benefit Member | Equity Funds, Domestic, Passive Index [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	58,000,000	55,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Equity Funds, Domestic, Passive Index [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
United States Pension Plans Of US Entity Defined Benefit Member | Equity Funds, Domestic, Passive Index [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	58,000,000	55,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Equity Funds, International, Actively Managed [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	121,000,000	122,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Equity Funds, International, Actively Managed [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	121,000,000	122,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Equity Funds, International, Actively Managed [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
United States Pension Plans Of US Entity Defined Benefit Member | Equity Funds, International, Passive Index [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	25,000,000	27,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Equity Funds, International, Passive Index [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
United States Pension Plans Of US Entity Defined Benefit Member | Equity Funds, International, Passive Index [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	25,000,000	27,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Cash and Cash Equivalents [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	1,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Cash and Cash Equivalents [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	1,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Cash and Cash Equivalents [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
United States Pension Plans Of US Entity Defined Benefit Member | Short-term Debt Securities [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	27,000,000	24,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Short-term Debt Securities [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
United States Pension Plans Of US Entity Defined Benefit Member | Short-term Debt Securities [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	27,000,000	24,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Corporate Debt Securities [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	267,000,000	274,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Corporate Debt Securities [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	240,000,000	246,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Corporate Debt Securities [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	27,000,000	28,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | US Treasury and Government [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	91,000,000	94,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | US Treasury and Government [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	91,000,000	94,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | US Treasury and Government [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
United States Pension Plans Of US Entity Defined Benefit Member | Hedge Funds [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	80,000,000	76,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Hedge Funds [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
United States Pension Plans Of US Entity Defined Benefit Member | Hedge Funds [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	80,000,000	76,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Real Estate [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	26,000,000	27,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Real Estate [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	26,000,000	27,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Real Estate [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
United States Pension Plans Of US Entity Defined Benefit Member | Asset-backed Securities [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	25,000,000	27,000,000	'
United States Pension Plans Of US Entity Defined Benefit Member | Asset-backed Securities [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
United States Pension Plans Of US Entity Defined Benefit Member | Asset-backed Securities [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	25,000,000	27,000,000	'
Foreign Pension Plans Defined Benefit Member	'	'	'
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]	'	'	'
Defined Benefit Plan, Service Cost	6,000,000	5,000,000	'
Defined Benefit Plan, Interest Cost	21,000,000	23,000,000	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanActualReturnOnPlanAssets	35,000,000	40,000,000	'
DefinedBenefitPlanForeignCurrencyExchangeRateChangesPlanAssets	-9,000,000	12,000,000	'
Defined Benefit Plan, Contributions by Employer	20,000,000	18,000,000	'
DefinedBenefitPlanBenefitsPaid	-21,000,000	-23,000,000	'
DefinedBenefitPlanPurchasesSalesAndSettlements	-7,000,000	-3,000,000	'
Defined Benefit Plan, Change in Fair Value of Plan Assets, Other	0	0	'
DefinedBenefitPlanFairValueOfPlanAssets	422,000,000	404,000,000	360,000,000
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]	'	'	'
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	20	'	'
DefinedBenefitPlanChangeInBenefitObligationRollForward	'	'	'
Defined Benefit Plan, Service Cost	6,000,000	5,000,000	'
Defined Benefit Plan, Interest Cost	21,000,000	23,000,000	'
DefinedBenefitPlanActuarial	3,000,000	34,000,000	'
DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	-8,000,000	16,000,000	'
DefinedBenefitPlanBenefitsPaid	-21,000,000	-23,000,000	'
DefinedBenefitPlanCurtailments	-7,000,000	-6,000,000	'
Defined Benefit Plan, Change in Benefit Obligation, Other	-2,000,000	2,000,000	'
DefinedBenefitPlanBenefitObligation	546,000,000	554,000,000	503,000,000
DefinedBenefitPlanFundedStatusOfPlanAbstract	'	'	'
DefinedBenefitPlanFundedStatusOfPlan	-124,000,000	-150,000,000	'
DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract	'	'	'
Defined Benefit Plan, Assets for Plan Benefits	2,000,000	1,000,000	'
PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	-2,000,000	-2,000,000	'
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	-124,000,000	-149,000,000	'
DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-124,000,000	-150,000,000	'
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract	'	'	'
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	406,000,000	511,000,000	'
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	392,000,000	487,000,000	'
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	293,000,000	365,000,000	'
Defined Benefit Plan, Plans with Plan Assets in Excess of Accumulated Benefit Obligations [Abstract]	'	'	'
Defined Benefit Plan, Pension Plans with Plan Assets in Excess of Accumulated Benefit Obligations, Aggregate Projected Benefit Obligation	132,000,000	43,000,000	'
Defined Benefit Plan, Pension Plans with Plan Assets in Excess of Accumulated Benefit Obligations, Aggregate Accumulated Benefit Obligation	121,000,000	33,000,000	'
Defined Benefit Plan, Pension Plans with Plan Assets in Excess of Accumulated Benefit Obligations, Aggregate Fair Value of Plan Assets	129,000,000	39,000,000	'
DefinedBenefitPlanAccumulatedBenefitObligation	513,000,000	520,000,000	'
DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract	'	'	'
DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	4.45%	4.10%	'
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Expected Long-term Return on Assets	6.38%	6.13%	'
DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	3.94%	3.50%	'
DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract	'	'	'
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	4.10%	4.65%	5.21%
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	6.13%	7.23%	7.25%
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	3.50%	3.75%	3.86%
Foreign Pension Plans Defined Benefit Member | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	35,000,000	36,000,000	'
Foreign Pension Plans Defined Benefit Member | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	387,000,000	368,000,000	'
Foreign Pension Plans Defined Benefit Member | Equity Funds, Domestic, Actively Managed [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	34,000,000	29,000,000	'
Foreign Pension Plans Defined Benefit Member | Equity Funds, Domestic, Actively Managed [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	30,000,000	25,000,000	'
Foreign Pension Plans Defined Benefit Member | Equity Funds, Domestic, Actively Managed [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	4,000,000	4,000,000	'
Foreign Pension Plans Defined Benefit Member | Equity Funds, Domestic, Passive Index [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	4,000,000	4,000,000	'
Foreign Pension Plans Defined Benefit Member | Equity Funds, Domestic, Passive Index [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
Foreign Pension Plans Defined Benefit Member | Equity Funds, Domestic, Passive Index [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	4,000,000	4,000,000	'
Foreign Pension Plans Defined Benefit Member | Equity Funds, International, Actively Managed [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	61,000,000	50,000,000	'
Foreign Pension Plans Defined Benefit Member | Equity Funds, International, Actively Managed [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
Foreign Pension Plans Defined Benefit Member | Equity Funds, International, Actively Managed [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	61,000,000	50,000,000	'
Foreign Pension Plans Defined Benefit Member | Equity Funds, International, Passive Index [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	28,000,000	31,000,000	'
Foreign Pension Plans Defined Benefit Member | Equity Funds, International, Passive Index [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	2,000,000	8,000,000	'
Foreign Pension Plans Defined Benefit Member | Equity Funds, International, Passive Index [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	26,000,000	23,000,000	'
Foreign Pension Plans Defined Benefit Member | Cash and Cash Equivalents [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	25,000,000	29,000,000	'
Foreign Pension Plans Defined Benefit Member | Cash and Cash Equivalents [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	3,000,000	3,000,000	'
Foreign Pension Plans Defined Benefit Member | Cash and Cash Equivalents [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	22,000,000	26,000,000	'
Foreign Pension Plans Defined Benefit Member | Short-term Debt Securities [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
Foreign Pension Plans Defined Benefit Member | Short-term Debt Securities [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
Foreign Pension Plans Defined Benefit Member | Short-term Debt Securities [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
Foreign Pension Plans Defined Benefit Member | Corporate Debt Securities [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	162,000,000	166,000,000	'
Foreign Pension Plans Defined Benefit Member | Corporate Debt Securities [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
Foreign Pension Plans Defined Benefit Member | Corporate Debt Securities [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	162,000,000	166,000,000	'
Foreign Pension Plans Defined Benefit Member | US Treasury and Government [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	7,000,000	7,000,000	'
Foreign Pension Plans Defined Benefit Member | US Treasury and Government [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
Foreign Pension Plans Defined Benefit Member | US Treasury and Government [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	7,000,000	7,000,000	'
Foreign Pension Plans Defined Benefit Member | Hedge Funds [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	101,000,000	88,000,000	'
Foreign Pension Plans Defined Benefit Member | Hedge Funds [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
Foreign Pension Plans Defined Benefit Member | Hedge Funds [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	101,000,000	88,000,000	'
Foreign Pension Plans Defined Benefit Member | Real Estate [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
Foreign Pension Plans Defined Benefit Member | Real Estate [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
Foreign Pension Plans Defined Benefit Member | Real Estate [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
Foreign Pension Plans Defined Benefit Member | Asset-backed Securities [Member]	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	0	0	'
Foreign Pension Plans Defined Benefit Member | Asset-backed Securities [Member] | Fair Value Inputs Level 1 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	'	'	'
Foreign Pension Plans Defined Benefit Member | Asset-backed Securities [Member] | Fair Value Inputs Level 2 Member	'	'	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanFairValueOfPlanAssets	'	'	'
Other Postretirement Benefit Plans, Defined Benefit [Member]	'	'	'
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]	'	'	'
Defined Benefit Plan, Service Cost	3,000,000	3,000,000	3,000,000
Defined Benefit Plan, Interest Cost	9,000,000	11,000,000	14,000,000
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	-4,000,000	-4,000,000	0
Defined Benefit Plan, Amortization of Gains (Losses)	-1,000,000	-3,000,000	-1,000,000
Defined Benefit Plan, Net Periodic Benefit Cost	7,000,000	6,000,000	14,000,000
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanBenefitsPaid	-20,000,000	-20,000,000	'
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]	'	'	'
DefinedBenefitPlanExpectedFutureBenefitPayments	21,000,000	'	'
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	21,000,000	'	'
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	21,000,000	'	'
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	20,000,000	'	'
DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	92,000,000	'	'
DefinedBenefitPlanChangeInBenefitObligationRollForward	'	'	'
Defined Benefit Plan, Service Cost	3,000,000	3,000,000	3,000,000
Defined Benefit Plan, Interest Cost	9,000,000	11,000,000	14,000,000
DefinedBenefitPlanActuarial	-20,000,000	17,000,000	'
DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	0	1,000,000	'
DefinedBenefitPlanPlanAmendments	0	-3,000,000	'
DefinedBenefitPlanBenefitsPaid	-20,000,000	-20,000,000	'
DefinedBenefitPlanCurtailments	0	0	'
Defined Benefit Plan, Change in Benefit Obligation, Other	-1,000,000	0	'
DefinedBenefitPlanBenefitObligation	244,000,000	273,000,000	264,000,000
DefinedBenefitPlanFundedStatusOfPlanAbstract	'	'	'
DefinedBenefitPlanFundedStatusOfPlan	-244,000,000	-273,000,000	'
DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract	'	'	'
PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	-20,000,000	-21,000,000	'
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	-224,000,000	-252,000,000	'
DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-244,000,000	-273,000,000	'
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract	'	'	'
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	51	9,000,000	'
DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	24,000,000	28,000,000	'
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), after Tax	7	14	'
DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYear	6	37,000,000	'
PostemploymentBenefitsAbstract	'	'	'
Postemployment Benefits Liability	18	22	'
PostemploymentBenefitsPeriodExpense	1	'	'
DefinedBenefitPlanEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesAbstract	'	'	'
DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	1,000,000	'	'
DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents	0	'	'
DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	9,000,000	'	'
DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation	-8,000,000	'	'
United States Postretirement Benefit Plans of US Entity, Defined Benefit [Member]	'	'	'
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]	'	'	'
Defined Benefit Plan, Service Cost	2,000,000	3,000,000	'
Defined Benefit Plan, Interest Cost	8,000,000	10,000,000	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanBenefitsPaid	-18,000,000	-19,000,000	'
DefinedBenefitPlanChangeInBenefitObligationRollForward	'	'	'
Defined Benefit Plan, Service Cost	2,000,000	3,000,000	'
Defined Benefit Plan, Interest Cost	8,000,000	10,000,000	'
DefinedBenefitPlanActuarial	-18,000,000	17,000,000	'
DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	0	0	'
DefinedBenefitPlanPlanAmendments	0	-3,000,000	'
DefinedBenefitPlanBenefitsPaid	-18,000,000	-19,000,000	'
DefinedBenefitPlanCurtailments	0	0	'
Defined Benefit Plan, Change in Benefit Obligation, Other	2,000,000	0	'
DefinedBenefitPlanBenefitObligation	228,000,000	252,000,000	244,000,000
DefinedBenefitPlanFundedStatusOfPlanAbstract	'	'	'
DefinedBenefitPlanFundedStatusOfPlan	-228,000,000	-252,000,000	'
DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract	'	'	'
PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	-20,000,000	-20,000,000	'
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	-208,000,000	-232,000,000	'
DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-228,000,000	-252,000,000	'
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract	'	'	'
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	21,000,000	'	'
DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	24,000,000	'	'
DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYear	45,000,000	'	'
DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract	'	'	'
DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	4.35%	3.50%	'
DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract	'	'	'
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	3.50%	4.35%	5.00%
DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstract	'	'	'
DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear	7.00%	7.00%	7.00%
DefinedBenefitPlanUltimateHealthCareCostTrendRate	5.00%	5.00%	5.00%
DefinedBenefitPlanYearThatRateReachesUltimateTrendRate	'2023	'2022	'2021
Foreign Postretirement Benefit Plans, Defined Benefit [Member]	'	'	'
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]	'	'	'
Defined Benefit Plan, Service Cost	1,000,000	0	'
Defined Benefit Plan, Interest Cost	1,000,000	1,000,000	'
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]	'	'	'
DefinedBenefitPlanBenefitsPaid	-2,000,000	-1,000,000	'
DefinedBenefitPlanChangeInBenefitObligationRollForward	'	'	'
Defined Benefit Plan, Service Cost	1,000,000	0	'
Defined Benefit Plan, Interest Cost	1,000,000	1,000,000	'
DefinedBenefitPlanActuarial	-2,000,000	0	'
DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	0	1,000,000	'
DefinedBenefitPlanPlanAmendments	0	0	'
DefinedBenefitPlanBenefitsPaid	-2,000,000	-1,000,000	'
DefinedBenefitPlanCurtailments	0	0	'
Defined Benefit Plan, Change in Benefit Obligation, Other	-3,000,000	0	'
DefinedBenefitPlanBenefitObligation	16,000,000	21,000,000	20,000,000
DefinedBenefitPlanFundedStatusOfPlanAbstract	'	'	'
DefinedBenefitPlanFundedStatusOfPlan	-16,000,000	-21,000,000	'
DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract	'	'	'
PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	0	-1,000,000	'
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	-16,000,000	-20,000,000	'
DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-16,000,000	-21,000,000	'
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract	'	'	'
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	6,000,000	5,000,000	'
DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	0	0	'
DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYear	$6,000,000	$5,000,000	'
DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract	'	'	'
DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	4.45%	3.80%	'
DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract	'	'	'
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	3.80%	4.10%	4.80%
DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstract	'	'	'
DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear	6.23%	6.50%	6.80%
DefinedBenefitPlanUltimateHealthCareCostTrendRate	4.79%	4.80%	4.80%
DefinedBenefitPlanYearThatRateReachesUltimateTrendRate	'2019	'2019	'2019

CONTINGENT_LIABILITIES_AND_OTH1

CONTINGENT LIABILITIES AND OTHER MATTERS (DETAIL) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
COST OF SALES	$1,045	$1,067	$1,080	$1,137	$989	$1,074	$1,152	$1,160	$4,329	$4,375	$4,307

STOCK_COMPENSATION_DETAIL

STOCK COMPENSATION (DETAIL) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Additional Disclosures Abstract	'	'	'
Nonoptions, Number, Grants In Period	'	409,700	'
Employee emergence equity program expense	$0	$0	$0
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options	'	'	1
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Roll Forward	'	'	'
Options, Outstanding, Number, Beginning Balance	3,025,220	3,293,545	3,397,858
Options, Outstanding, Number, Grants In Period	329,800	409,700	412,200
Options, Outstanding, Number, Options Exercised	-549,800	-520,120	-374,738
Options, Outstanding, Number, Forfeitures In Period	-56,500	-157,905	-141,775
Options, Outstanding, Number, Ending Balance	2,748,720	3,025,220	3,293,545
Options, Outstanding, Weighted Average Exercise Price, Beginning of Period	$27.78	$26.26	$25.06
Options, Outstanding, Grants In Period Weighted Average Exercise Price	$42.16	$33.73	$33.98
Options, Outstanding, Exercises In Period Weighted Average Exercise Price	$26.88	$22.65	$25.78
Options, Outstanding, Forfeitures In Period Weighted Average Exercise Price	$34.58	$28.48	$21.19
Options, Outstanding, Weighted Average Exercise Price, End of Period	$29.55	$27.78	$26.26
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	2,748,720	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term	'5 years 4 months 6 days	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price, Beginning Balance	$29.55	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Remaining Contractual Term	'4 years 2 months 12 days	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price	$26.75	'	'
Stock Options Member	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Terms of Award, Maximum (in years)	10	'	'
Allocated Share Based Compensation Expense	5	5	4
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition	'2 years 6 months 7 days	'	'
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Additional Disclosures Abstract	'	'	'
Nonoptions, Number, Grants In Period	329,800	'	412,200
Nonoptions, Weighted Average Fair Value, Grants in Period	$18.94	$15.27	$15.85
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate	45.30%	45.80%	44.30%
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate	0.00%	0.00%	0.00%
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term	'6 years 3 months 0 days	'6 years 3 months 3 days	'6 years 3 months 3 days
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized	8	'	'
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value	27	28	12
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options	15	12	10
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options	3	2	'
Restricted Stock Member	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Allocated Share Based Compensation Expense	16	15	13
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition	'2 years 7 months 2 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	1,875,065	1,941,742	1,987,705
Nonoptions, Number, Grants In Period	512,398	638,618	565,982
Nonoptions, Number, Vested In Period	-573,920	-544,528	-476,650
Nonoptions, Number, Forfeited In Period	-77,719	-160,767	-135,295
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance	1,735,824	1,875,065	1,941,742
Nonoptions, Weighted Average Fair Value, Beginning Balance	$27.14	$23.83	$19.74
Nonoptions, Weighted Average Fair Value, Grants in Period	$41.01	$33.43	$33.47
Nonoptions, Weighted Average Fair Value, Vested	$26	$22.38	$18.82
Nonoptions, Weighted Average Fair Value, Forfeited	$34.62	$28.36	$21.67
Nonoptions, Weighted Average Fair Value, Ending Balance	$32.49	$27.14	$23.83
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized	25	'	'
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value	16	12	9
Performance Stock Units (PSUs) [Member]	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Allocated Share Based Compensation Expense	7	13	7
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition	'1 year 8 months 12 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	412,910	508,616	754,603
Nonoptions, Number, Grants In Period	207,050	256,400	354,564
Nonoptions, Number, Vested In Period	-167,610	-260,580	-526,608
Nonoptions, Number, Forfeited In Period	-41,850	-91,526	-73,943
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance	410,500	412,910	508,616
Nonoptions, Weighted Average Fair Value, Beginning Balance	$49.14	$42.24	$19.66
Nonoptions, Weighted Average Fair Value, Grants in Period	$56.71	$47.97	$48.61
Nonoptions, Weighted Average Fair Value, Vested	$48.61	$36.52	$16.45
Nonoptions, Weighted Average Fair Value, Forfeited	$50.39	$43.45	$25.98
Nonoptions, Weighted Average Fair Value, Ending Balance	$53.04	$49.14	$42.24
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized	$11	'	'
Performance Stock Units (PSUs) Stock 2013 [Member]	'	'	'
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 Fair Value Assumptions Expected Volatility Rate	36.70%	'	'
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term	'2 years 10 months 24 days	'	'
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate	0.40%	'	'
Performance Stock Units (PSUs) Stock 2012 [Member]	'	'	'
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 Fair Value Assumptions Expected Volatility Rate	'	48.20%	'
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term	'	'2 years 10 months 28 days	'
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate	'	0.30%	'
Performance Stock Units (PSUs) Cash 2012 [Member]	'	'	'
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 Fair Value Assumptions Expected Volatility Rate	'	25.73%	'
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term	'	'1 year 0 months 0 days	'
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate	'	0.20%	'
Performance Stock Units (PSUs) Stock 2011 [Member]	'	'	'
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 Fair Value Assumptions Expected Volatility Rate	'	'	57.20%
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term	'	'	'1 year 0 months 0 days
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate	'	'	1.10%
Performance Stock Units (PSUs) Cash 2011 [Member]	'	'	'
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 Fair Value Assumptions Expected Volatility Rate	'	'	24.84%
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term	'	'	'0 years 0 months 0 days
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate	'	'	0.00%

WARRANTS_DETAIL

WARRANTS (DETAIL) (USD $)	Dec. 31, 2013
In Millions, except Per Share data, unless otherwise specified
SeriesAMember	'
ClassOfWarrantOrRightLineItems	'
ClassOfWarrantOrRightOutstanding	17.5
ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights	$43
SeriesBMember	'
ClassOfWarrantOrRightLineItems	'
ClassOfWarrantOrRightOutstanding	7.8
ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights	$45.25

EARNINGS_PER_SHARE_DETAIL

EARNINGS PER SHARE (DETAIL) (USD $)	3 Months Ended								12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share Abstract	'	'	'	'	'	'	'	'	'	'	'
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING	$82	$51	$49	$22	($56)	$44	$39	($46)	$204	($19)	$276
Weighted Average Common Shares, Basic	'	'	'	'	'	'	'	'	118.2	119.4	122.5
Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends	'	'	'	'	'	'	'	'	0.4	0	0.7
Incremental Common Shares Attributable To Call Options And Warrants	'	'	'	'	'	'	'	'	0.5	0	0.3
Earnings Per Share Basic	$0.70	$0.43	$0.41	$0.19	($0.47)	$0.37	$0.32	($0.38)	$1.73	($0.16)	$2.25
Earnings Per Share Diluted	$0.69	$0.43	$0.41	$0.18	($0.47)	$0.37	$0.32	($0.38)	$1.71	($0.16)	$2.23
Equity Class Of Treasury Stock [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Purchase of treasury stock	'	'	'	'	'	'	'	'	$63	$113	$138
Repurchase Program 2012 [Member]	'	'	'	'	'	'	'	'	'	'	'
Equity Class Of Treasury Stock [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	10	'	'	'	'	'	'	'	10	'	'
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	8	'	'	'	'	'	'	'	8	'	'
Combined Repurchase Programs [Member]	'	'	'	'	'	'	'	'	'	'	'
Equity Class Of Treasury Stock [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Stock Repurchase Program, Number of Shares Acquired During Period	'	'	'	'	'	'	'	'	1.4	'	'
Stock Options Member	'	'	'	'	'	'	'	'	'	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount	'	'	'	'	'	'	'	'	0.6	'	'
Series A Warrants [Member]	'	'	'	'	'	'	'	'	'	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount	'	'	'	'	'	'	'	'	'	17.5	17.5
Series B Warrants [Member]	'	'	'	'	'	'	'	'	'	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount	'	'	'	'	'	'	'	'	'	7.8	7.8

FAIR_VALUE_MEASUREMENT_DETAIL

FAIR VALUE MEASUREMENT (DETAIL) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets	'	'
Cash And Cash Equivalents Fair Value Disclosure	$20	$1
Term Deposits, Fair Value Disclosure	2	'
Derivative Assets	1	1
Total Assets	23	3
Notes Receivable Fair Value Disclosure	53	'
Liabilities	'	'
Derivative Liabilities	4	4
Liabilities	4	4
Fair Value Inputs Level 1 Member	'	'
Assets	'	'
Cash And Cash Equivalents Fair Value Disclosure	20	1
Term Deposits, Fair Value Disclosure	2	'
Total Assets	22	2
Fair Value Inputs Level 2 Member	'	'
Assets	'	'
Derivative Assets	1	1
Total Assets	1	1
Liabilities	'	'
Derivative Liabilities	4	4
Liabilities	$4	$4

INCOME_TAXES_DETAIL

INCOME TAXES (DETAIL) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$196	$31	$202
Income (Loss) from Continuing Operations before Income Taxes, Foreign	77	-71	151
EARNINGS BEFORE TAXES	273	-40	353
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]	'	'	'
Current Federal Tax Expense (Benefit)	-2	1	-14
Current State and Local Tax Expense (Benefit)	-2	-2	2
Current Foreign Tax Expense (Benefit)	30	20	28
Current Income Tax Expense (Benefit)	26	19	16
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]	'	'	'
Deferred Federal Income Tax Expense (Benefit)	56	-22	61
Deferred State and Local Income Tax Expense (Benefit)	2	2	7
Deferred Foreign Income Tax Expense (Benefit)	-16	-27	-10
Deferred Income Tax Expense (Benefit)	42	-47	58
Income Tax Expense Benefit Continuing Operations	68	-28	74
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]	'	'	'
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	-35.00%	35.00%	35.00%
Income Tax Reconciliation, State and Local Income Taxes	2	-5	2
Income Tax Reconciliation, Foreign Income Tax Rate Differential	-11	-60	-10
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance	17	127	2
Income Tax Rate Reconciliation, Uncertain Tax Positions and Settlements	-1	-2	-3
Income Tax Rate Reconciliation, Goodwill	0	0	0
Income Tax Reconciliation, Other Reconciling Items	-5	-33	-4
Effective Income Tax Rate Continuing Operations	-70.00%	21.00%	-875.00%
Components of Deferred Tax Assets [Abstract]	'	'	'
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits	153	160	'
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions	115	161	'
Deferred Tax Assets, Operating Loss Carryforwards, Domestic and Foreign	1,117	1,080	'
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	6	5	'
Deferred Tax Assets, Other	135	173	'
Valuation Allowance, Amount	-270	-228	'
Deferred Tax Assets, Net	1,256	1,351	'
Deferred Tax Assets, Net, Current	80	71	'
Components of Deferred Tax Liabilities [Abstract]	'	'	'
Deferred Tax Liabilities, Deferred Expense	338	332	'
Deferred Tax Liabilities, Goodwill and Intangible Assets	370	373	'
Deferred Tax Liabilities	708	705	'
Income Tax Penalties and Interest [Abstract]	'	'	'
Income Tax Examination, Penalties and Interest Accrued	'	1	'
Income Tax Examination, Penalties and Interest Expense	'	'	-15
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]	'	'	'
Unrecognized Tax Benefits, Beginning Balance	161	170	210
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	2	12	8
Unrecognized Tax Benefits, Decreases Resulting from Current Period Tax Positions	0	0	0
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	4	7	6
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	-1	-14	-46
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities	-3	-13	-7
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	-8	-1	-1
Unrecognized Tax Benefits, Ending Balance	155	161	170
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	1	'	'
Investments in Foreign Subsidiaries and Foreign Corporate Joint Ventures that are Essentially Permanent in Duration [Member]	'	'	'
Deferred Tax Liability Not Recognized [Line Items]	'	'	'
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability	$262	'	'

CHANGES_IN_ACCUMULATED_OTHER_C2

CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (DETAIL) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income Loss Net Of Tax Abstract	'	'	'
Accumulated other comprehensive deficit	($297)	($364)	'
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent [Abstract]	'	'	'
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	0	-1	-3
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax	1	2	'
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	0	0	'
Deferred loss on hedging transactions (net of tax)	1	2	'
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent [Abstract]	'	'	'
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	2	30	25
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	-28	5	-39
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment Realized upon Sale or Liquidation, Net of Tax	0	0	'
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	-28	5	'
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent [Abstract]	'	'	'
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	-184	-279	-226
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Net of Tax	15	-140	'
Other Comprehensive Income Translation Impact On Non US Plans Net Of Tax	80	87	'
Pension and other postretirement adjustment (net of tax)	95	-53	'
Other Comprehensive Income AOCI Valuation	'	'	'
Accumulated Other Comprehensive Income Loss AOCI Valuation	-115	-114	-111
Other comprehensive income translation impact	-1	-3	'
Other Comprehensive Income Loss Reclassification AOCI Valuation	0	0	'
Other comprehensive income loss AOCI Valuation net of tax	($1)	($3)	'

SUBSEQUENT_EVENTS_DETAIL

SUBSEQUENT EVENTS (DETAIL) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Subsequent Event [Line Items]	'	'	'
Gains (Losses) on Extinguishment of Debt	$0	($74)	$0

LEASES_DETAIL

LEASES (DETAIL) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
OperatingLeasesFutureMinimumPaymentsDueAbstract	'	'	'
OperatingLeasesFutureMinimumPaymentsDueCurrent	$66,000,000	'	'
OperatingLeasesFutureMinimumPaymentsDueInTwoYears	39,000,000	'	'
OperatingLeasesFutureMinimumPaymentsDueInThreeYears	31,000,000	'	'
OperatingLeasesFutureMinimumPaymentsDueInFourYears	22,000,000	'	'
OperatingLeasesFutureMinimumPaymentsDueInFiveYears	14,000,000	'	'
OperatingLeasesFutureMinimumPaymentsDueThereafter	36,000,000	'	'
Operating Leases, Rent Expense	$83	$79	$74

ACCOUNTS_PAYABLE_AND_ACCRUED_L2

ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (DETAILS) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Accounts Payable and Accrued Liabilities [Abstract]	'	'
Accounts Payable, Current	$547	$498
AccruedSalariesAndVacationCurrent	161	115
AccruedPayrollPropertyAndOtherTaxesCurrent	95	98
Other Employee Related Liabilities, Current	39	40
Product Warranty Accrual, Current	19	20
Accrued Professional Fees, Current	7	11
Interest Payable, Current	8	11
AccruedRestructuringCostsCurrent	26	45
Other Accrued Liabilities, Current	81	59
Accounts Payable and Accrued Liabilities, Current	$988	$907