OWENS CORNING, 10-Q filed on 11/5/2025
Quarterly Report
v3.25.3
DOCUMENT AND ENTITY INFORMATION - shares
 9 Months Ended
Sep. 30, 2025
Oct. 31, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2025  
Document Transition Report false  
Entity File Number 1-33100  
Entity Registrant Name Owens Corning  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 43-2109021  
Entity Address, Address Line One One Owens Corning Parkway  
Entity Address, City or Town Toledo  
Entity Address, State or Province OH  
Entity Address, Postal Zip Code 43659  
City Area Code 419  
Local Phone Number 248-8000  
Title of 12(b) Security Common Stock, par value $0.01 per share  
Trading Symbol OC  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock Shares Outstanding   82,191,739
Entity Central Index Key 0001370946  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q3  
Amendment Flag false  
v3.25.3
CONSOLIDATED STATEMENTS OF EARNINGS - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Income Statement [Abstract]        
NET SALES $ 2,684 $ 2,763 $ 7,961 $ 7,277
COST OF SALES 1,927 1,912 5,621 4,985
Gross margin 757 851 2,340 2,292
OPERATING EXPENSES        
Marketing and administrative expenses 240 258 764 677
Science and technology expenses 39 32 111 91
Goodwill impairment charge 780 0 780 0
Loss on sale of business (2) 0 (28) 0
Other expense, net 23 89 72 258
Total operating expenses 1,084 379 1,755 1,026
OPERATING (LOSS) INCOME (327) 472 585 1,266
Non-operating expense (income) 1 0 1 (1)
(LOSS) EARNINGS FROM CONTINUING OPERATIONS BEFORE INTEREST AND TAXES (328) 472 584 1,267
Interest expense, net 65 69 192 148
(LOSS) EARNINGS FROM CONTINUING OPERATIONS BEFORE TAXES (393) 403 392 1,119
Income tax expense 102 118 300 302
Equity in net earnings of affiliates 0 2 1 4
NET (LOSS) EARNINGS FROM CONTINUING OPERATIONS (495) 287 93 821
Net loss attributable to non-redeemable and redeemable noncontrolling interests 0 0 (1) 0
NET (LOSS) EARNINGS FROM CONTINUING OPERATIONS ATTRIBUTABLE TO OWENS CORNING (495) 287 94 821
Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax 1 34 (318) 84
NET (LOSS) EARNINGS ATTRIBUTABLE TO OWENS CORNING (494) 321 (224) 905
Net loss attributable to non-redeemable and redeemable noncontrolling interests 0 0 (1) 0
Net earnings $ (494) $ 321 $ (225) $ 905
EARNINGS (LOSS) PER COMMON SHARE ATTRIBUTABLE TO OWENS CORNING COMMON STOCKHOLDERS        
Basic - continuing operations (in dollars per share) $ (5.93) $ 3.30 $ 1.11 $ 9.42
Basic - discontinued operations (in dollars per share) 0.01 0.39 (3.75) 0.96
Basic (in dollars per share) (5.92) 3.69 (2.64) 10.38
Diluted - continuing operations (in dollars per share) (5.93) 3.26 1.10 9.33
Diluted - discontinued operations (in dollars per share) 0.01 0.39 (3.73) 0.95
Diluted (in dollars per share) $ (5.92) $ 3.65 $ (2.63) $ 10.28
v3.25.3
CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Statement of Comprehensive Income [Abstract]        
Net earnings $ (494) $ 321 $ (225) $ 905
Other comprehensive (loss) income, net of tax:        
Currency translation adjustment (net of tax of $0 and $0 for the three months ended September 30, 2025 and 2024, respectively, and $0 and $0 for the nine months ended September 30, 2025 and 2024, respectively) (6) 68 251 (37)
Pension and other postretirement adjustment (net of tax of $0 and $0 for the three months ended September 30, 2025 and 2024, respectively, and $1 and $0 for the nine months ended September 30, 2025 and 2024, respectively) 1 (4) (7) (5)
Hedging adjustment (net of tax of $0 and $0 for the three months ended September 30, 2025 and 2024, respectively, and $0 and $(3) for the nine months ended September 30, 2025 and 2024, respectively) (1) 1 (6) 11
Other comprehensive (loss) income, net of tax (6) 65 238 (31)
COMPREHENSIVE (LOSS) EARNINGS (500) 386 13 874
Comprehensive (loss) earnings attributable to non-redeemable and redeemable noncontrolling interests (1) (1) 1 (3)
COMPREHENSIVE (LOSS) EARNINGS ATTRIBUTABLE TO OWENS CORNING $ (499) $ 387 $ 12 $ 877
v3.25.3
CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Parenthetical) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Statement of Comprehensive Income [Abstract]        
Currency translation tax $ 0 $ 0 $ 0 $ 0
Pension and other postretirement adjustment 0 0 1 0
Hedging tax 0 0 0 (3)
Net earnings $ (494) $ 321 $ (225) $ 905
v3.25.3
CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
CURRENT ASSETS    
Cash and cash equivalents $ 286 $ 321
Receivables, less allowance of $3 at September 30, 2025 and $4 at December 31, 2024 1,440 1,140
Inventories 1,423 1,327
Other current assets 154 163
Current assets of discontinued operations 424 427
Total current assets 3,727 3,378
Property, plant and equipment, net 3,994 3,818
Operating lease right-of-use assets 429 411
Goodwill 2,029 2,745
Intangible assets, net 2,609 2,680
Deferred income taxes 8 8
Other non-current assets 478 456
Non-current assets of discontinued operations 243 579
TOTAL ASSETS 13,517 14,075
CURRENT LIABILITIES    
Accounts payable 1,316 1,301
Current operating lease liabilities 82 83
Short-term debt 40 1
Long-term debt - current portion 436 32
Other current liabilities 615 654
Disposal Group, Including Discontinued Operation, Other Liabilities, Current 180 226
Total current liabilities 2,669 2,297
Long-term debt, net of current portion 4,678 5,067
Pension plan liability 44 42
Other employee benefits liability 99 101
Non-current operating lease liabilities 372 348
Deferred income taxes 789 719
Other liabilities 322 286
Non-current liabilities of discontinued operations 106 95
Total liabilities 9,079 8,955
OWENS CORNING STOCKHOLDERS’ EQUITY    
Preferred stock, par value $0.01 per share [1] 0 0
Common stock, par value $0.01 per share [2] 1 1
Additional paid-in capital 4,240 4,228
Accumulated earnings 4,824 5,224
Accumulated other comprehensive deficit (455) (691)
Cost of common stock in treasury [3] (4,211) (3,685)
Total Owens Corning stockholders’ equity 4,399 5,077
Noncontrolling interests 39 43
Total equity 4,438 5,120
TOTAL LIABILITIES AND EQUITY $ 13,517 $ 14,075
[1] 10 shares authorized; none issued or outstanding at September 30, 2025 and December 31, 2024
[2] 400 shares authorized; 135.5 issued and 82.2 outstanding at September 30, 2025; 135.5 issued and 85.4 outstanding at December 31, 2024
[3] 53.3 shares at September 30, 2025 and 50.1 shares at December 31, 2024
v3.25.3
CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 3 $ 4
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, authorized (in shares) 10,000,000 10,000,000
Preferred stock, outstanding (in shares) 0 0
Preferred stock, issued (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, authorized (in shares) 400,000,000 400,000,000
Common stock, issued (in shares) 135,500,000 135,500,000
Common stock, outstanding (in shares)   85,400,000
Treasury stock (in shares)   50,100,000
v3.25.3
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
shares in Millions, $ in Millions
Total
Common Stock
Treasury Stock
APIC
Retained Earnings [Member]
AOCI
NCI
Beginning balance at Dec. 31, 2023 $ 5,185 $ 1 $ (3,292) $ 4,166 $ 4,794 $ (503) $ 19
Common stock, beginning balance (in shares) at Dec. 31, 2023   87.2          
Treasury stock, beginning balance (in shares) at Dec. 31, 2023     48.3        
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Fair value of awards included in transaction consideration       35      
Net (loss) earnings attributable to non-redeemable noncontrolling interests             1
Noncontrolling Interest, Purchases (Reductions) of Noncontrolling Interest             35
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent           (5)  
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture     $ 85 (70)      
Treasury Stock, Value, Acquired, Cost Method     $ (385)        
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest       (1)      
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition       74      
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax           (34) (3)
Currency translation adjustment as a result of sale of business           0  
Net earnings attributable to Owens Corning 905       905    
Dividends [1]         (158)    
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax           11  
Dividends distributed to non-redeemable noncontrolling interests             0
Issuance of common stock under share-based payment plans, shares   1.0 (1.0)        
Purchases of treasury stock (shares)   (2.4) 2.4        
Treasury stock, ending balance (in shares) at Sep. 30, 2024     49.7        
Ending balance at Sep. 30, 2024 5,673 $ 1 $ (3,592) 4,204 5,541 (531) 50
Common stock, ending balance (in shares) at Sep. 30, 2024   85.8          
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Noncontrolling Interest, Return Of Capital To Non-Redeemable Noncontrolling Interest             (2)
Beginning balance at Jun. 30, 2024 5,525 $ 1 $ (3,391) 4,186 5,273 (597) 53
Common stock, beginning balance (in shares) at Jun. 30, 2024   86.9          
Treasury stock, beginning balance (in shares) at Jun. 30, 2024     48.6        
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Fair value of awards included in transaction consideration       0      
Net (loss) earnings attributable to non-redeemable noncontrolling interests             0
Noncontrolling Interest, Purchases (Reductions) of Noncontrolling Interest             0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent           (4)  
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture     $ 4 (3)      
Treasury Stock, Value, Acquired, Cost Method     $ (205)        
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest       0      
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition       21      
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax           69 (1)
Currency translation adjustment as a result of sale of business           0  
Net earnings attributable to Owens Corning 321       321    
Dividends [1]         (53)    
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax           1  
Dividends distributed to non-redeemable noncontrolling interests             0
Issuance of common stock under share-based payment plans, shares   0.1 (0.1)        
Purchases of treasury stock (shares)   (1.2) 1.2        
Treasury stock, ending balance (in shares) at Sep. 30, 2024     49.7        
Ending balance at Sep. 30, 2024 5,673 $ 1 $ (3,592) 4,204 5,541 (531) 50
Common stock, ending balance (in shares) at Sep. 30, 2024   85.8          
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Noncontrolling Interest, Return Of Capital To Non-Redeemable Noncontrolling Interest             (2)
Beginning balance at Dec. 31, 2024 $ 5,120 $ 1 $ (3,685) 4,228 5,224 (691) 43
Common stock, beginning balance (in shares) at Dec. 31, 2024 85.4 85.4          
Treasury stock, beginning balance (in shares) at Dec. 31, 2024 50.1   50.1        
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Fair value of awards included in transaction consideration       0      
Net (loss) earnings attributable to non-redeemable noncontrolling interests             (1)
Noncontrolling Interest, Purchases (Reductions) of Noncontrolling Interest             (3)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent           (7)  
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture     $ 59 (42)      
Treasury Stock, Value, Acquired, Cost Method     $ (585)        
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest       0      
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition       54      
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax           233 2
Currency translation adjustment as a result of sale of business           16  
Net earnings attributable to Owens Corning $ (224)       (224)    
Dividends [1]         (176)    
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax           (6)  
Dividends distributed to non-redeemable noncontrolling interests             (2)
Issuance of common stock under share-based payment plans, shares   0.8 (0.8)        
Purchases of treasury stock (shares)   (4.0) 4.0        
Treasury stock, ending balance (in shares) at Sep. 30, 2025     53.3        
Ending balance at Sep. 30, 2025 4,438 $ 1 $ (4,211) 4,240 4,824 (455) 39
Common stock, ending balance (in shares) at Sep. 30, 2025   82.2          
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Noncontrolling Interest, Return Of Capital To Non-Redeemable Noncontrolling Interest             0
Beginning balance at Jun. 30, 2025 5,204 $ 1 $ (3,989) 4,225 5,376 (450) 41
Common stock, beginning balance (in shares) at Jun. 30, 2025   83.6          
Treasury stock, beginning balance (in shares) at Jun. 30, 2025     51.9        
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Fair value of awards included in transaction consideration       0      
Net (loss) earnings attributable to non-redeemable noncontrolling interests             0
Noncontrolling Interest, Purchases (Reductions) of Noncontrolling Interest             0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent           1  
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture     $ 1 0      
Treasury Stock, Value, Acquired, Cost Method     $ (223)        
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest       0      
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition       15      
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax           (21) (1)
Currency translation adjustment as a result of sale of business           16  
Net earnings attributable to Owens Corning (494)       (494)    
Dividends [1]         (58)    
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax           (1)  
Dividends distributed to non-redeemable noncontrolling interests             (1)
Issuance of common stock under share-based payment plans, shares   0.1 (0.1)        
Purchases of treasury stock (shares)   (1.5) 1.5        
Treasury stock, ending balance (in shares) at Sep. 30, 2025     53.3        
Ending balance at Sep. 30, 2025 $ 4,438 $ 1 $ (4,211) $ 4,240 $ 4,824 $ (455) 39
Common stock, ending balance (in shares) at Sep. 30, 2025   82.2          
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Noncontrolling Interest, Return Of Capital To Non-Redeemable Noncontrolling Interest             $ 0
[1] Dividend declarations of $0.69 and $0.60 per share as of the three months ended September 30, 2025 and September 30, 2024, respectively. Dividend declarations of $2.07 and $1.80 per share as of the nine months ended September 30, 2025 and September 30, 2024, respectively.
v3.25.3
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Statement of Stockholders' Equity [Abstract]        
Common stock, par value (in dollars per share) $ 0.01 $ 0.01 $ 0.01 $ 0.01
Dividends (dollars per share) $ 0.69 $ 0.60 $ 2.07 $ 1.80
v3.25.3
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
NET CASH FLOW PROVIDED BY OPERATING ACTIVITIES    
Net earnings $ (225) $ 905
Adjustments to reconcile net (loss) earnings to cash provided from operating activities:    
Loss on discontinued operations 409 0
Depreciation and amortization 513 483
Loss on sale of business 28 0
Losses (35) (19)
Deferred income taxes 100 (55)
Stock-based compensation expense 54 74
Goodwill impairment charge 780 0
Other adjustments to reconcile net earnings to cash from operating activities (24) (8)
Changes in operating assets and liabilities (372) (147)
Pension fund contribution (5) (4)
Payments for other employee benefits liabilities (7) (8)
Other (20) (5)
Net cash flow provided by operating activities 1,196 1,216
NET CASH FLOW USED FOR INVESTING ACTIVITIES    
Cash paid for property, plant, and equipment (567) (450)
Proceeds from the sale of assets or affiliates 63 114
Investment in subsidiaries and affiliates, net of cash acquired 0 (2,857)
Other (9) 0
Net cash flow used for investing activities (513) (3,193)
NET CASH FLOW (USED FOR) PROVIDED BY FINANCING ACTIVITIES    
Proceeds from long-term debt 0 1,968
Payments on long-term debt (29) (473)
Net proceeds from commercial paper notes 40 0
Proceeds from senior revolving credit and receivables securitization facilities 329 560
Payments on senior revolving credit and receivables securitization facilities (329) (560)
Proceeds from term loan borrowing 0 2,784
Payments on term loan borrowing 0 (2,800)
Dividends paid (176) (156)
Purchases of treasury stock (583) (388)
Finance lease payments (34) (29)
Other (1) (5)
Net cash flow (used for) provided by financing activities (783) 901
Effect of exchange rate changes on cash 82 (28)
Net decrease in cash, cash equivalents and restricted cash (18) (1,104)
Cash, cash equivalents and restricted cash at beginning of period 369 1,623
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD 351 519
Continuing Operations    
NET CASH FLOW (USED FOR) PROVIDED BY FINANCING ACTIVITIES    
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD 294 464
Discontinued Operations    
NET CASH FLOW (USED FOR) PROVIDED BY FINANCING ACTIVITIES    
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD $ 57 $ 55
v3.25.3
GENERAL
 9 Months Ended
Sep. 30, 2025
Accounting Changes and Error Corrections [Abstract]  
GENERAL GENERAL
Unless the context requires otherwise, the terms “Owens Corning,” “Company,” “we” and “our” in this report refer to Owens Corning, a Delaware corporation, and its subsidiaries.
The Consolidated Financial Statements included in this report are unaudited, pursuant to certain rules and regulations of the Securities and Exchange Commission (“SEC”), and include, in the opinion of the Company, normal recurring adjustments necessary for a fair statement of the results for the periods indicated, which, however, are not necessarily indicative of results which may be expected for the full year. The December 31, 2024 balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States (“U.S.”). In connection with the Consolidated Financial Statements and Notes included in this report, reference is made to the Consolidated Financial Statements and Notes contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 (the “2024 Form 10-K”). Certain prior year amounts have been reclassified in order to conform to the current year presentation. On February 14, 2025, the Company announced the sale of its glass reinforcements ("GR") business. The transaction represented a strategic shift that has a major effect on the Company's operations and financial results and therefore, beginning with the quarterly report on Form 10-Q for the period ended March 31, 2025, and including this quarterly report on Form 10-Q for the period ended September 30, 2025, the glass reinforcements financial results are reflected in the Company’s consolidated financial statements as discontinued operations for all periods presented. Unless otherwise specified, these notes to the Consolidated Financial Statements reflect continuing operations. The Consolidated Statements of Cash Flows present cash flows from both continuing and discontinued operations. Please refer to Note 2 of the Consolidated Financial Statements for further information. Due to the reorganization of our reportable segments, prior period information has been recast to align with our new reportable segments. Please refer to Note 3 of the Consolidated Financial Statements for further information.
Acquisition of Masonite International Corporation
On May 15, 2024, the Company acquired all of the outstanding shares of Masonite International Corporation (“Masonite”) at a purchase price of $133.00 per share (the "Arrangement"). Masonite is a leading global designer, manufacturer, marketer and distributor of interior and exterior doors and door systems for residential new construction and residential repair and remodeling. The addition of Masonite's market-leading doors business creates a new growth platform for the Company, strengthening the Company's position in building and construction and expanding its offering of branded residential building products.
Masonite's operating results and purchase price allocation have been included in the Company's Doors reportable segment from May 15, 2024, the effective date of the Arrangement, within the Consolidated Financial Statements. Please refer to Note 8 of the Consolidated Financial Statements for further information.
Revenue Recognition
As of December 31, 2024, our contract liability balances (for extended warranties, down payments and deposits, collectively) totaled $118 million, of which $21 million was recognized as revenue in the first nine months of 2025. As of September 30, 2025, our contract liability balances totaled $130 million.
As of December 31, 2023, our contract liability balances totaled $101 million, of which $19 million was recognized as revenue in the first nine months of 2024. As of September 30, 2024, our contract liability balances totaled $115 million.
Cash, Cash Equivalents and Restricted Cash
On the Consolidated Statements of Cash Flows, the total of Cash, cash equivalents and restricted cash includes restricted cash of $8 million as of September 30, 2025 and December 31, 2024. Restricted cash primarily represents amounts received from a counterparty related to its performance assurance on an executory contract. The amounts received from a counterparty are contractually required to be set aside, and the counterparty can exchange the cash for another form of performance assurance at its discretion. These amounts are included in Other current assets on the Consolidated Balance Sheets.
Accounts Receivable
Our customers consist mainly of distributors, home centers, contractors and retailers. Two of our largest customers accounted for 23% and 20%, respectively, of accounts receivable as of September 30, 2025.
Related Party Transactions
In the first quarter of 2021, a related party relationship was established as a result of a member of the Company’s Board of Directors being named an executive officer of one of the Company’s preexisting suppliers. The related party transactions with this supplier consist of the purchase of raw materials. Purchases from the related party supplier were $19 million and $68 million for the three and nine months ended September 30, 2025, respectively, and $20 million and $85 million for the three and nine months ended September 30, 2024, respectively. As of September 30, 2025 and December 31, 2024, amounts due to the related party supplier were $3 million and $3 million, respectively.
Supplier Finance Programs
We review supplier terms and conditions on an ongoing basis, and have negotiated payment terms extensions in recent years in connection with our efforts to reduce working capital and improve cash flow. Separate from those terms extension actions, certain of our subsidiaries have entered into paying agency agreements with third-party administrators. These voluntary supply chain finance programs (collectively, the “Programs”) generally give participating suppliers the ability to sell, or otherwise pledge as collateral, their receivables from the Company to the participating financial institutions, at the sole discretion of both the suppliers and financial institutions. The Company is not a party to the arrangements between the suppliers and the financial institutions. The Company’s obligations to its suppliers, including amounts due and scheduled payment dates, are not impacted by the suppliers’ decisions to sell, or otherwise pledge as collateral, amounts under these arrangements. The Company’s payment terms to the financial institutions, including the timing and amount of payments, are based on the original supplier invoices. One of the Programs includes a parent guarantee to the participating financial institution for a certain U.S. subsidiary that, at the time of the respective program’s inception in 2015, was a guarantor subsidiary of the Company’s credit agreement.
The obligations are presented as Accounts payable within Total current liabilities on the Consolidated Balance Sheets and all activity related to the obligations is presented within operating activities on the Consolidated Statements of Cash Flow.
The Company’s confirmed outstanding obligations under the Programs totaled $203 million and $234 million as of September 30, 2025 and December 31, 2024, respectively. The amounts of invoices paid under the Programs totaled $459 million and $405 million for the nine months ended September 30, 2025 and September 30, 2024, respectively.
Pension and Other Postretirement Benefits
The Company sponsors defined benefit pension plans. Under the plans, pension benefits are based on an employees’ 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.
The Company maintains healthcare and life insurance benefit plans for certain retired employees and their dependents. The health care plans in the United States are non-funded and pay either (1) stated percentages of covered medically necessary expenses, after subtracting payments by Medicare or other providers and after stated deductibles have been met, or (2) fixed amounts of medical expense reimbursement.
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.
Accounting Policies
There have been no changes in the significant accounting policies from those that were disclosed in the 2024 Form 10-K.
Accounting Pronouncements
The following table summarizes recent Accounting Standard Updates ("ASU") issued by the Financial Accounting Standards Board ("FASB") that could have an impact on the Company's Consolidated Financial Statements:
StandardDescriptionEffective Date for CompanyEffect on the
Consolidated Financial Statements
ASU 2025-06 "Intangibles—Goodwill and Other—
Internal-Use Software
(Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software"		The amendments in this update include targeted improvements to recognition guidance for capitalizing software costs, eliminating the previous stage-based model and replacing it with a principles-based framework. January 1, 2028We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.
ASU 2025-05 "Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets"The amendments will be effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. Early adoption is permitted in both interim and annual reporting periods in which financial statements have not yet been issued or made available for issuance.January 1, 2026We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.
ASU 2025-01 "Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40)"The amendment in this update clarifies the effective date of Update 2024-03: public business entities are required to adopt the guidance in annual reporting periods beginning after December 15, 2026, and in interim periods within those annual periods beginning after December 15, 2027.January 1, 2027We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.
ASU 2024-03 "Income Statement – Reporting Comprehensive Income- Expense Disaggregation Disclosures (Subtopic 220-40)"The amendments in this update require disclosure, in the notes to financial statements, of specified information about certain costs and expenses.January 1, 2027We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.
ASU 2024-02 "Codification Improvements - Amendments to Remove References to the Concepts Statements"Amendments in this update remove references to various FASB Concepts Statements.January 1, 2025We have adopted and determined that this guidance did not have a material effect on our Consolidated Financial Statements.
ASU 2024-01 "Compensation - Stock Compensation" (Topic 718): Scope Application of Profits Interest and Similar Awards"This amendment adds an illustrative example to demonstrate how an entity should apply the scope guidance in paragraph 718-10-15-3 to determine whether profits interest and similar awards should be accounted for in accordance with Topic 718.January 1, 2025We have adopted and determined that this guidance did not have a material effect on our Consolidated Financial Statements.
ASU 2023-09 “Income Taxes (Topic 740): Improvements to Income Tax Disclosures”This standard modifies the rate reconciliation and income taxes paid disclosures by requiring consistent categories and greater disaggregation of information in the rate reconciliation, as well as requiring income taxes paid to be disaggregated by jurisdiction.January 1, 2025We have adopted and determined that this guidance did not have a material effect on our Consolidated Financial Statement disclosures.
ASU 2023-07 “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures”The amendments in this update improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses.January 1, 2024We have adopted and determined that this guidance did not have a material effect on our Consolidated Financial Statement disclosures.
ASU 2023-06 “Disclosure Improvements”The amendments in this update modify the disclosure or presentation requirements of a variety of TopicsThe effective date for each topic is contingent on future SEC rule setting.We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.
v3.25.3
DISCONTINUED OPERATIONS
 9 Months Ended
Sep. 30, 2025
Discontinued Operations and Disposal Groups [Abstract]  
DISCONTINUED OPERATIONS DISCONTINUED OPERATIONS
During the fourth quarter of 2024, the Company determined that certain asset groups should be tested for recoverability, primarily as a result of the progression of the strategic review of GR. Recoverability of the long-lived assets was measured by comparing the carrying amount of the asset groups to the future net undiscounted cash flows expected to be generated by the asset groups. Specifically for the GR asset group, the Company used an undiscounted cash flow model giving consideration to probability weighted cash flows of differing outcomes of the strategic review. The comparison indicated that one of the asset groups, the GR asset group, was not recoverable.
Fair value of the GR asset group was calculated using a discounted cash flow model and market information obtained through the strategic review to estimate the fair value of the asset group, with weighting applied. As a result of the analysis performed, the Company recorded pre-tax asset impairment charges for the amount by which the carrying value exceeded its fair value of $483 million for the year ended December 31, 2024, which was included in Impairment due to strategic review on the Consolidated Statements of Earnings within the 2024 Form 10-K. These charges include $439 million related to property, plant and equipment, $30 million related to operating lease right-of-use assets and $14 million related to definite-lived intangible assets.
On February 13, 2025, the Company entered into a definitive agreement ("GR Agreement") for the sale of GR for a purchase price of approximately $436 million, less costs to sell. As of September 30, 2025, the estimated purchase price was $498 million, net of cash, less costs to sell. The change since signing is due to the changes in customary and transaction-specific price adjustments which are subject to further changes through the date of the final closing adjustments. The purchase price is inclusive of $225 million of promissory notes to be issued to the Company by the purchasers. The GR business, historically part of the Company’s Composites segment, manufactures, fabricates, and sells glass fiber reinforcements for a wide variety of applications in wind energy, infrastructure, industrial, transportation and consumer markets.
The transaction represented a strategic shift that has a major effect on the Company's operations and financial results and therefore, beginning with the quarterly report on Form 10-Q for the period ended March 31, 2025, and including this quarterly report on Form 10-Q for the period ended September 30, 2025, GR’s financial results are reflected in the Company’s consolidated financial statements as discontinued operations for all periods presented.
As a result of classifying GR as a discontinued operation, a portion of the Goodwill from our former Composites reporting unit was allocated to the balance sheets of the discontinued operation. As of the date of classification of GR as a discontinued operation, the Company determined the amount of Goodwill to allocate based on the relative fair values of the discontinued operation and the former Composites reporting unit. This resulted in an allocation of $98 million of Goodwill to the discontinued operation.
After allocating Goodwill to the discontinued operation, as well as at the end of each subsequent quarter, the Company compared the carrying value of the discontinued operation to the fair value of the discontinued operation, defined as the sale price less estimated selling costs. During the three and nine months ended September 30, 2025, the Company incurred a pre-tax loss on classification as discontinued operations of $28 million and $409 million, respectively. The loss is presented within Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax, on the Consolidated Statements of Earnings. An estimated valuation allowance of $379 million is recorded within Non-current assets of discontinued operations, on the Consolidated Balance Sheets.
The following table summarizes Earnings from discontinued operations attributable to Owens Corning, net of tax included within the Consolidated Statements of Earnings:

Three Months Ended September 30,Nine Months Ended September 30,
(In millions)
2025202420252024
NET SALES$301 $283 $877 $858 
COST OF SALES245 226 679 695 
OPERATING EXPENSES
Marketing and administrative expenses18 21 53 63 
Loss from classification as discontinued operation28 — 409 — 
Other expense (income), net10 (1)15 (3)
Total operating expenses56 20 477 60 
Interest expense, net2 1 4 3 
Income tax (benefit) expense(3)2 35 16 
NET EARNINGS (LOSS) FROM DISCONTINUED OPERATIONS ATTRIBUTABLE TO OWENS CORNING, NET OF TAX$1 $34 $(318)$84 
Major classes of assets and liabilities of discontinued operations include the following:
(In millions)
September 30, 2025December 31, 2024
ASSETS
CURRENT ASSETS
Cash and cash equivalents$57 $40 
Receivables, less allowance126 104 
Inventories218 260 
Other current assets23 23 
Current assets of discontinued operations424 427 
Property, plant and equipment, net414 346 
Goodwill100 98 
Deferred income taxes4 46 
Valuation allowance for discontinued operations(379)— 
Other non-current assets104 89 
Non-current assets of discontinued operations$243 $579 
LIABILITIES
CURRENT LIABILITIES
Accounts payable$109 $129 
Other current liabilities71 97 
Current liabilities of discontinued operations180 226 
Other liabilities106 95 
Non-current liabilities of discontinued operations$106 $95 
Cash flows related to discontinued operations are included within the Consolidated Statements of Cash Flows. Selected financial information related to cash flows from discontinued operations are below:

Nine Months Ended September 30,
(In millions)
20252024
Depreciation and amortization$— $72 
Cash paid for property, plant and equipment$64 $55 
DIVESTITURES
On November 4, 2024, the Company entered into a related party agreement to sell its building materials business in China and Korea to a member of the business' management team. The disposal further aligns with the strategy to reshape the Company to focus on residential and commercial building products in North America and Europe. The transaction included six insulation manufacturing facilities in China and a roofing manufacturing facility in Korea. The building materials business, within the Insulation segment, represented annual revenues of approximately $130 million. The Company completed the transaction in July 2025 and is in the process of finalizing certain related transfers, which are expected to be completed by the end of the first quarter of fiscal year 2026.
During the fourth quarter of 2024, the Company reclassified $2 million as held for sale within Other current liabilities on the Consolidated Balance Sheets. The Company also recorded the assets at the fair value less cost to sell, which was less than the carrying value and resulted in an impairment of $91 million primarily related to Property, Plant and Equipment and Goodwill. The impairment was included in Loss on sale of business on the Consolidated Statements of Earnings within the Company's 2024 Form 10-K. The Company estimated the fair value of these assets, less cost to sell, using Level 3 inputs.
During the three and nine months ended September 30, 2025, the Company incurred an additional loss of $2 million and $28 million, respectively, as a result of closing the sale, amendments to the related party agreement and changes in working capital. This loss is included within Loss on sale of business on the Consolidated Statements of Earnings.
v3.25.3
SEGMENT INFORMATION
 9 Months Ended
Sep. 30, 2025
Segment Reporting [Abstract]  
SEGMENT INFORMATION SEGMENT INFORMATION
Effective January 1, 2025, due to a strategic shift in how we manage our business as a result of the GR Agreement, we are presenting the GR business as a discontinued operation. We reorganized our reportable segments to align to our new operating and management structure. As a result, all prior period information was recast to reflect this change. The Company now has three reportable segments: Roofing, Insulation and Doors. The Company's vertically integrated glass non-wovens business that supports the Company’s Roofing business and other building products customers, along with its structural lumber business, were integrated into the Roofing business segment. Two glass melting plants, which make fiber for the non-wovens business, were integrated into the Insulation segment. Unless otherwise specified, the information in the note refers to only the continuing operations of the Company.
Operating segments are aggregated into reportable segments based on consideration of the following factors: similarity of economic characteristics, the nature of business activities, the management structure directly accountable to our chief operating decision maker ("CODM") for operating and administrative activities, availability of discrete financial information and information presented to the Board of Directors and investors. Accounting policies for the segments are the same as those for the Company. The Company’s three reportable segments are defined as follows:
Roofing – Within our Roofing segment, the Company manufactures and sells residential roofing shingles, oxidized asphalt materials, roofing components and composite lumber primarily used in residential construction. Roofing also manufactures and sells glass mat and specialty veil materials used in building and construction applications.
Insulation – Within our Insulation segment, the Company manufactures and sells thermal and acoustical batts, loose fill insulation, spray foam insulation, wet use chopped strand, foam sheathing and accessories. It also manufactures and sells glass fiber pipe insulation, energy efficient flexible duct media, bonded and granulated stone wool insulation, cellular glass insulation, and foam insulation used in above- and below-grade construction applications.
Doors – Within our Doors segment, the Company manufactures and sells interior and exterior doors and door systems primarily used in residential construction.
NET SALES
The following tables show a disaggregation of our Net sales by segment and geographic region. Corporate eliminations (shown below) largely reflect intercompany sales between Insulation and Roofing. External customer sales are attributed to geographic region based upon the location from which the product is sold to the external customer.
Three Months Ended September 30, 2025
(In millions)RoofingInsulationDoorsSubtotalEliminationsConsolidated
Disaggregation Categories
North America Residential$1,070 $374 $482 $1,926 $(39)$1,887 
North America Non-Residential118 372 — 490 (2)488 
Total North America1,188 746 482 2,416 (41)2,375 
Europe50 193 59 302 (1)301 
Asia-Pacific2 — — 2 — 2 
Rest of world— 2 4 6 — 6 
NET SALES$1,240 $941 $545 $2,726 $(42)$2,684 
Three Months Ended September 30, 2024
(In millions)RoofingInsulationDoorsSubtotalEliminationsConsolidated
Disaggregation Categories
North America Residential$1,058 $406 $509 $1,973 $(37)$1,936 
North America Non-Residential116 382 — 498 (1)497 
Total North America1,174 788 509 2,471 (38)2,433 
Europe44 184 58 286 (1)285 
Asia-Pacific3 33 — 36 — 36 
Rest of world— 3 6 9 — 9 
NET SALES$1,221 $1,008 $573 $2,802 $(39)$2,763 
Nine Months Ended September 30, 2025
(In millions)RoofingInsulationDoorsSubtotalEliminationsConsolidated
Disaggregation Categories
North America Residential$3,166 $1,102 $1,450 $5,718 $(114)$5,604 
North America Non-Residential336 1,077 — 1,413 (7)1,406 
Total North America3,502 2,179 1,450 7,131 (121)7,010 
Europe153 539 173 865 (4)861 
Asia-Pacific8 56 3 67 — 67 
Rest of world— 10 13 23 — 23 
NET SALES$3,663 $2,784 $1,639 $8,086 $(125)$7,961 
Nine Months Ended September 30, 2024
(In millions)RoofingInsulationDoorsSubtotalEliminationsConsolidated
Disaggregation Categories
North America Residential$3,106 $1,187 $786 $5,079 $(107)$4,972 
North America Non-Residential314 1,100 — 1,414 (8)1,406 
Total North America3,420 2,287 786 6,493 (115)6,378 
Europe142 543 88 773 (2)771 
Asia-Pacific9 98 1 108 — 108 
Rest of world— 11 9 20 — 20 
NET SALES$3,571 $2,939 $884 $7,394 $(117)$7,277 
EARNINGS BEFORE INTEREST, TAXES, DEPRECIATION AND AMORTIZATION
Effective January 1, 2025, we changed our segment measure of profitability for our reportable segments from Earnings before interest and taxes ("EBIT") to Earnings before interest, taxes, depreciation and amortization (“EBITDA”), as the measure used for purposes of making decisions about allocating resources to the segments and assessing performance. Segment EBITDA is the principal measure used by the CODM to assess segment performance and make decisions on the allocation of resources. Prior period amounts have been recast to reflect the new segment measure for profitability.
The Company identifies the Chief Executive Officer as the CODM. In applying the criteria set forth in the standards for reporting information about segments in financial statements, we have determined that we have three reportable segments – Roofing, Insulation and Doors. The key factors used to identify these reportable segments are the organization and alignment of our internal operations and the nature of our products. The CODM uses EBITDA for each reportable segment to assess segment performance and make decisions on the allocation of resources. Segment EBITDA targets are established on an annual basis and used by the CODM throughout the year to compare with actual results. Quarterly forecasts supplement annual targets and
provide incremental information utilized to assess the performance of a segment. Segment EBITDA variance analysis further provides insight into segment operational cost optimization.
The Company does not regularly provide significant segment expense detail to the CODM. EBITDA by segment consists of net sales less related costs and expenses, which are mainly comprised of cost of sales and marketing and administrative costs. EBITDA is 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 EBITDA for our reportable segments and are included within Corporate, Other and Eliminations.
The following table summarizes EBITDA by segment:

Three Months Ended September 30,Nine Months Ended
September 30,
(In millions)
2025202420252024
Reportable Segments
Roofing$423 $419 $1,212 $1,194 
Insulation212 248 662 717 
Doors56 89 199 150 
Total reportable segments691 756 2,073 2,061 
Restructuring excluding depreciation(7)— (19)(44)
Loss on sale of business(2)— (28)— 
Impairment of venture investment— (13)— (13)
Gains on sale of certain precious metals14 19 35 19 
Strategic review-related charges— (16)— (33)
Paroc marine recall— (1)(2)(8)
Acquisition-related transaction costs— (2)— (49)
Acquisition-related integration costs excluding amortization(9)(53)(15)(74)
Recognition of acquisition inventory fair value step-up— (6)— (18)
Goodwill impairment charge(780)— (780)— 
General Corporate expense and other(53)(51)(167)(163)
Total corporate, other and eliminations(837)(123)(976)(383)
Depreciation and amortization(182)(161)(513)(411)
Interest expense, net(65)(69)(192)(148)
(LOSS) EARNINGS FROM CONTINUING OPERATIONS BEFORE TAXES$(393)$403 $392 $1,119 
TOTAL ASSETS AND PROPERTY, PLANT AND EQUIPMENT
The following table summarizes total assets by segment:
(In millions)September 30, 2025December 31, 2024
Assets allocated to reportable segments
Roofing$3,450 $3,107 
Insulation4,536 4,231 
Doors3,586 4,454 
Total assets allocated to reportable segments11,572 11,792 
Assets not allocated to reportable segments
Cash and cash equivalents286 321 
Non-current deferred income taxes8 8 
Investments in affiliates61 86 
Corporate property, plant and equipment, other assets and eliminations923 862 
TOTAL ASSETS FROM CONTINUING OPERATIONS$12,850 $13,069 
The following table summarizes total property, plant and equipment, net by geographic region:
(In millions)September 30, 2025December 31, 2024
North America$3,286 $3,182 
Europe604 524 
Asia Pacific64 67 
Rest of world40 45 
PROPERTY, PLANT AND EQUIPMENT, NET FROM CONTINUING OPERATIONS$3,994 $3,818 
ADDITIONS TO PROPERTY, PLANT AND EQUIPMENT
The following table summarizes cash paid for property, plant and equipment by segment:
 Three Months Ended September 30,Nine Months Ended
September 30,
(In millions)2025202420252024
Reportable Segments
Roofing$46 $37 $174 $142 
Insulation65 56226 172 
Doors18 2559 40 
Total reportable segments$129 $118 $459 $354 
General corporate additions16 1244 41 
ADDITIONS TO PROPERTY, PLANT AND EQUIPMENT FROM CONTINUING OPERATIONS
$145 $130 $503 $395 
v3.25.3
INVENTORIES
 9 Months Ended
Sep. 30, 2025
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
Inventories consist of the following:
(In millions)September 30, 2025December 31, 2024
Finished goods$755 $664 
Materials and supplies668 663 
Total inventories$1,423 $1,327 
v3.25.3
DERIVATIVE FINANCIAL INSTRUMENTS
 9 Months Ended
Sep. 30, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
DERIVATIVE FINANCIAL INSTRUMENTS DERIVATIVE FINANCIAL INSTRUMENTS
The Company is exposed to, among other risks, the impact of changes in commodity prices, foreign currency exchange rates, and interest rates in the normal course of business. The Company’s risk management program is designed to manage the exposure and volatility arising from these risks and utilizes derivative financial instruments to offset a portion of these risks. The Company uses derivative financial instruments only to the extent necessary to hedge identified business risks, and does not enter into such transactions for trading purposes.
The Company generally does not require collateral or other security with counterparties to these financial instruments and is therefore subject to credit risk in the event of nonperformance; however, the Company monitors credit risk and currently does not anticipate nonperformance by other parties. Contracts with counterparties generally contain right of offset provisions. These provisions effectively reduce the Company’s exposure to credit risk in situations where the Company has gain and loss positions outstanding with a single counterparty. It is the Company’s policy to offset on the Consolidated Balance Sheets the amounts recognized for derivative instruments with any cash collateral arising from derivative instruments executed with the same counterparty under a master netting agreement. As of September 30, 2025 and December 31, 2024, 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.
Derivative Fair Values
Our derivatives consist of natural gas forward swaps, foreign exchange forward contracts and U.S. treasury rate lock agreements, all of which are over-the-counter and not traded through an exchange. The Company uses widely accepted valuation tools to determine fair value, such as discounting cash flows to calculate a present value for the derivatives. The models use Level 2 inputs, such as forward curves and other commonly quoted observable transactions and prices, which are observable market-based inputs or unobservable inputs that are corroborated by market data. The fair value of our derivatives and hedging instruments are all classified as Level 2 investments within the three-tier hierarchy.
The following table presents the fair value of derivatives and hedging instruments and their respective location on the Consolidated Balance Sheets:
  Fair Value at
(In millions)LocationSeptember 30, 2025December 31, 2024
Derivative assets designated as hedging instruments:
Cash flow hedges:
Natural gas forward swaps for continuing operationsOther current assets$— $3 
Natural gas forward swaps for discontinued operationsOther current assets of discontinued operations$— $1 
Derivative liabilities designated as hedging instruments:
Cash flow hedges:
Natural gas forward swaps for continuing operationsOther current liabilities$3 $1 
Derivative assets not designated as hedging instruments:
Foreign exchange forward contracts for continuing operationsOther current assets$1 $— 
Foreign exchange forward contracts for discontinued operationsOther current assets of discontinued operations$— $1 
Derivative liabilities not designated as hedging instruments:
Foreign exchange forward contracts for continuing operationsOther current liabilities$1 $1 
Foreign exchange forward contracts for discontinued operationsOther current liabilities of discontinued operations$— $1 
Consolidated Statements of Earnings Activity
The following table presents the impact and respective location of derivative activities on the Consolidated Statements of Earnings:


Three Months Ended
September 30,		Nine Months Ended
September 30,
(In millions)Location2025202420252024
Derivative activity designated as hedging instruments:
Natural gas cash flow hedges:
Amount of loss reclassified from AOCI (as defined below) into earnings (a)Cost of sales$— $2 $— $11 
Amount of loss reclassified from AOCI (as defined below) into earnings (a)Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax$— $— $— $5 
Treasury interest rate lock:
Amount of loss (gain) reclassified from AOCI (as defined below) into earnings (a)Interest expense, net$— $1 $(2)$1 
Derivative activity not designated as hedging instruments:
Foreign currency:
Amount of loss (gain) recognized in earnings (b)
Other expense, net$2 $— $1 $(1)
Amount of loss (gain) recognized in earnings (c)
Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax$— $— $5 $(3)
(a)Accumulated Other Comprehensive Income (Deficit) (“AOCI”)
(b)(Gains)/losses related to foreign currency derivatives were substantially offset by net revaluation impacts on foreign currency denominated balance sheet exposures, which were also recorded in Other expense, net. Please refer to the “Other Derivatives” section below for additional detail.
(c)(Gains)/losses related to foreign currency derivatives were substantially offset by net revaluation impacts on foreign currency denominated balance sheet exposures, which were also recorded in Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax. Please refer to the “Other Derivatives” section below for additional detail.
Consolidated Statements of Comprehensive Earnings Activity
The following table presents the impact of derivative activities on the Consolidated Statements of Comprehensive Earnings:
Amount of Gain (Loss) Recognized in Comprehensive Earnings
(In millions)Three Months Ended
September 30,		Nine Months Ended
September 30,
Hedging TypeDerivative Financial Instrument2025202420252024
Cash flow hedgeNatural gas forward swaps$(1)$1 $(6)$14 
Cash Flow Hedges
The Company uses a combination of derivative financial instruments, which qualify as cash flow hedges, and physical contracts to manage forecasted exposure to electricity and natural gas prices. As of September 30, 2025, the notional amounts of these natural gas forward swaps for both continuing and discontinued operations were 6 million MMBtu (or MMBtu equivalent) based on U.S. and European indices. The Company has designated these natural gas forward swaps as cash flow hedges, with the last hedge maturing no later than December 2026. A net unrecognized loss of $3 million related to these natural gas forward swaps was included in AOCI as of September 30, 2025, $3 million of which is expected to be reclassified into earnings within the next twelve months.
In 2020, the Company entered into a $175 million forward U.S. Treasury rate lock agreement to manage the U.S. Treasury portion of its interest rate risk associated with the anticipated issuance of certain 10-year fixed rate senior notes. The Company designated this forward U.S. Treasury rate lock agreement, which expired on December 15, 2022, as a cash flow hedge. The locked fixed rate of this agreement was 0.994%. In September 2022, a gain of $6 million was recognized as a result of a change in the forecasted issuance of certain senior notes. In December 2022, the Company received cash of $37 million upon the settlement of the rate lock agreement, of which $31 million will be amortized as a component of interest expense upon the future issuance of senior notes. In May 2024, the Company issued new senior notes and began amortizing the $31 million over the life of the Company's 5.700% senior notes due 2034, of which $2 million was recognized during the nine months ended September 30, 2025. The unrecognized gain of $27 million was included in AOCI as of September 30, 2025.
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. As of September 30, 2025, the Company had notional amounts for continuing and discontinued operations of $190 million for non-designated derivative financial instruments related to foreign currency exposures in U.S. Dollars primarily related to the Mexican Peso, Indian Rupee, Brazilian Real, Hong Kong Dollar, Korean Won, Japanese Yen and the Chinese Yuan. In addition, the Company had notional amounts for continuing operations of $143 million for non-designated derivative financial instruments related to foreign currency exposures in European Euro primarily related to the Polish Złoty, U.S. Dollar, Danish Krone and Norwegian Krone.
v3.25.3
GOODWILL AND OTHER INTANGIBLE ASSETS
 9 Months Ended
Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
GOODWILL AND OTHER INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS
The Company tests goodwill and indefinite-lived intangible assets for impairment during the fourth quarter of each year, or more frequently should circumstances change or events occur that would more likely than not reduce the fair value of a reporting unit below its carrying value.
Goodwill
The changes in the net carrying value of goodwill by segment are as follows:
(In millions)RoofingInsulationDoorsTotal
Gross carrying amount at December 31, 2024
$654 $1,549 $1,478 $3,681 
Foreign currency translation7 67 11 85 
Purchase price allocation adjustments— — 23 23 
Gross carrying amount at September 30, 2025
661 1,616 1,512 3,789 
Accumulated impairment losses at December 31, 2024
— (936)— (936)
Impairment charge— — (780)(780)
Foreign currency translation— (44)— (44)
Accumulated impairment losses at September 30, 2025
— (980)(780)(1,760)
Balance, net of impairment, at September 30, 2025
$661 $636 $732 $2,029 
First Quarter Goodwill Triggering Event
During the first quarter of 2025, our internal reporting and management structure changed, resulting in the identification of three new reportable segments: Roofing, Insulation and Doors. As a result of our segment reorganization, we reassigned the former Composites reportable segment assets and liabilities into the Roofing and Insulation reportable segments. As this change was considered a goodwill triggering event, we performed an interim goodwill impairment test both prior and subsequent to the reorganization using a discounted cash flow approach for each of the respective reporting units.
Prior to reorganizing the reportable segments and integrating portions of the former Composites reportable segment, but after allocating Goodwill to discontinued operations, the Company tested the Goodwill for the Roofing, Insulation and Composites reporting units. As a result of this test, we determined that no impairment existed for any of the reporting units and that the business enterprise value for the Roofing, Insulation and Composites reporting units substantially exceeded their carrying values. The remaining Composites Goodwill, after the allocation of Goodwill to discontinued operations, of $325 million was allocated between the Roofing and Insulation reporting units based on the relative fair values of the portions of the Composites business, which were integrated based on the discounted cash flows of each.
Subsequent to allocating Goodwill to the Roofing and Insulation reporting units, as part of reorganization, the Company tested the Goodwill for the Roofing and Insulation reporting units. As a result of this test, we determined that no impairment existed for either reporting unit and that the business enterprise value for the Roofing and Insulation reporting units substantially exceeded their carrying values as of the date of our assessment.
Second Quarter Goodwill Triggering Event
In the second quarter of 2025, the Company performed its ongoing assessment to consider whether events or circumstances had occurred that could more likely than not reduce the fair value of the Doors reporting unit below its carrying value. The narrow cushion on the Doors reporting unit, due to its recent acquisition, and the high level of near-term macroeconomic uncertainty caused by recently announced tariffs, triggered the Company to perform an interim goodwill impairment test as of June 30, 2025 for the Doors reporting unit. The fair value of the reporting unit was determined based on a discounted cash flow analysis, or income approach, as well as a market approach, based on market multiples of comparable companies.
As a result of this test, we determined that no impairment existed for the Doors reporting unit as the fair value exceeded the carrying value by approximately 5%. The most significant assumptions used in the fair value analysis were base year revenue, revenue growth rate, adjusted EBITDA margins, discount rate and market multiples under the market approach.
Third Quarter Goodwill Triggering Event
In the third quarter of 2025, the Company performed its ongoing assessment to consider whether events or circumstances had occurred that could more likely than not reduce the fair value of our reporting units below their carrying values. The narrow cushion on the Doors reporting unit, due to its recent acquisition, and the continuation of the previously disclosed macroeconomic uncertainty including softness in North America discretionary residential repair and remodeling activity and near-term challenges in North America residential new construction, triggered the Company to perform an interim goodwill impairment test as of September 30, 2025. The fair value of the reporting unit was determined based on a combination of the discounted cash flow analysis, or income approach, as well as the Guideline Public Company Method, or a market approach, based on market multiples of comparable companies.
Based on the results of this testing, the Company recorded a $780 million pre-tax non-cash impairment charge, equal to the excess of the Doors reporting unit's carrying value over its fair value, in the third quarter of 2025. This charge was recorded in Goodwill impairment charge on the Consolidated Statements of Earnings, and was included in the Corporate, Other and Eliminations reporting category. The reduction in fair value for the Doors reporting unit, and corresponding impairment charge, was primarily driven by a decrease in near-term revenue, including 2026, as a result of the macroeconomic uncertainty.
The most significant assumptions used in the fair value analysis were base year revenue, revenue growth rate, long-term growth rate, adjusted EBITDA margins, discount rate and market multiples under the market approach.
The remaining balance of goodwill for the Doors reporting unit of $732 million as of September 30, 2025 continues to be at risk for future impairment. Continued uncertainty surrounding the macroeconomic factors impacting this reporting unit or changes in the significant assumptions mentioned above, could increase the likelihood of an additional future impairment.
Other Intangible Assets
Other intangible assets consist of the following:
September 30, 2025December 31, 2024
(In millions)
Gross
Carrying
Amount
Accumulated
Amortization
Net
Carrying
Amount
Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Amount
Indefinite-lived trademarks and trade names$1,237 $— $1,237 $1,225 $— $1,225 
Amortizable intangible assets
Customer relationships1,547 (406)1,141 1,570 (367)1,203 
Technology386 (232)154 373 (199)174 
Trademarks and trade names 31 (6)25 31 (4)27 
Other (a)54 (2)52 52 (1)51 
Total other intangible assets$3,255 $(646)$2,609 $3,251 $(571)$2,680 
(a) Other primarily includes emissions rights.
Indefinite-Lived Intangible Assets
There are two indefinite-lived intangible assets that are at an increased risk of impairment, which are used by our Insulation segment and our Doors segment.
In the fourth quarter of 2022, an indefinite-lived tradename used by our Insulation segment was partially impaired. A change in the estimated long-term revenue growth rate or discount rate for our Insulation segment could increase the likelihood of a future impairment.
In the third quarter of 2025, we performed an interim impairment test for an indefinite-lived tradename used by our Doors segment, based on the macroeconomic conditions that precipitated the interim goodwill impairment test described above. As a result of this test, we determined that no impairment existed for the tradename.
Fair value used in testing for potential impairment of our tradename was calculated using the relief-from-royalty method by applying an estimated market value royalty rate to the forecasted revenues of the businesses that utilize that asset. The assumed cash flows from this calculation are discounted at a rate based on a market participant discount rate. None of the assumptions were deemed to be significant.
The following table presents the carrying values of these assets as of September 30, 2025:
(In millions)September 30, 2025
European building and technical insulation trade name
$96 
Doors trade name$195 
Definite-Lived Intangible Assets
The Company amortizes the cost of other intangible assets over their estimated useful lives which, individually, range up to 25 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.
Amortization expense for intangible assets for the three and nine months ended September 30, 2025 was $37 million and $114 million, respectively. Amortization expense for intangible assets for the three and nine months ended September 30, 2024 was $42 million and $97 million, respectively. Amortization expense for intangible assets is estimated to be $34 million for the remainder of 2025.
The estimated amortization expense for intangible assets for the next five fiscal years ended December 31 is as follows:
(In millions)Amortization
2026$135 
2027$126 
2028$125 
2029$111 
2030$102 
v3.25.3
PROPERTY, PLANT AND EQUIPMENT
 9 Months Ended
Sep. 30, 2025
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment consist of the following:
(In millions)September 30,
2025		December 31, 2024
Land$186 $178 
Buildings and leasehold improvements1,394 1,238 
Machinery and equipment5,318 4,876 
Construction in progress483 564 
Property, plant and equipment, gross7,381 6,856 
Accumulated depreciation(3,387)(3,038)
Property, plant and equipment, net$3,994 $3,818 
Machinery and equipment include certain precious metals used in our production tooling, which comprise approximately 4% of total machinery and equipment as of September 30, 2025 and December 31, 2024. Precious metals used in our production tooling are depleted as they are consumed during the production process, depletion expense is included in Cost of Sales on the Company's Consolidated Statements of Earnings.
Our production tooling needs are changing due to the announced sale of our GR business. As a result, the Company sold certain precious metals resulting in no gains for the three months ended September 30, 2025 and gains of $10 million for the nine months ended September 30, 2025. These gains are included in Other expense, net on the Consolidated Statements of Earnings and are reflected in the Corporate, Other and Eliminations reporting category. The cash proceeds from the sales are included in Net cash flow used for investing activities in the Consolidated Statements of Cash Flow.
We also exchanged certain precious metals used in production tooling for certain other precious metals to be used in production tooling. During the three and nine months ended September 30, 2025, these non-cash exchanges resulted in a net increase to Machinery and equipment of $14 million and $25 million, as well as gains totaling $14 million and $25 million, respectively. These gains are included in Other expense, net on the Consolidated Statements of Earnings and are reflected in the Corporate, Other and Eliminations reporting category.
During the third quarter of 2025, the Company determined that a certain asset group within our Doors reportable segment should be tested for recoverability, primarily as a result of the goodwill triggering event for our Doors reporting unit. Recoverability of the long-lived assets was measured by comparing the carrying amount of the asset group to the future net undiscounted cash flows expected to be generated by the asset group. This comparison determined that the asset group was recoverable. None of the assumptions were deemed to be significant.
v3.25.3
ACQUISITIONS
 9 Months Ended
Sep. 30, 2025
Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]  
ACQUISITIONS ACQUISITIONS
On February 8, 2024, the Company entered into an Arrangement Agreement (the "Arrangement Agreement") with Masonite, pursuant to which the Company agreed to acquire all of the issued and outstanding common shares of Masonite at a purchase price of $133.00 per share. On May 15, 2024, as determined by the Arrangement Agreement, the Company completed the acquisition of 100% of the issued and outstanding shares of Masonite for $133.00 per share in cash, without interest for a total purchase price of $3.2 billion. The acquisition was funded primarily with debt proceeds of $2.8 billion and cash on hand. Please refer to the discussion under "364-Day Credit Facility" in Note 12 of the Consolidated Financial Statements for further information.
Masonite is a leading global designer, manufacturer, marketer and distributor of interior and exterior doors and door systems for the residential new construction and residential repair and remodeling markets. The addition of Masonite's market-leading doors business creates a new growth platform for the Company, strengthening the Company's position in building and construction and expanding its offering of branded residential building products.
Masonite's operating results and purchase price allocation have been included in the Company's Doors reportable segment from May 15, 2024, the effective date of the Arrangement, within the Consolidated Financial Statements. Doors contributed revenues of $1,639 million and earnings of $14 million to the Company for the nine months ended September 30, 2025. During the nine months ended September 30, 2024 Doors contributed revenues of $884 million and earnings of $54 million. Please refer to Note 3 of the Consolidated Financial Statements for further information.
During the three and nine months ended September 30, 2025, the Company incurred no transaction costs. During the three and nine months ended September 30, 2024, the Company incurred $2 million and $49 million of transaction costs, respectively. During the three and nine months ended September 30, 2025, the Company incurred $9 million and $15 million of integration costs, respectively, related to its acquisition of Masonite. During the three and nine months ended September 30, 2024, the Company incurred $53 million and $74 million of integration costs, respectively, related to its acquisition of Masonite. These expenses are included in Other expense, net on the Company's Consolidated Statements of Earnings.
The fair value of the total purchase consideration transferred was determined as follows:
(In millions)Fair Value of Purchase Consideration
Closing cash consideration$2,935 
Pre-combination vesting portion of fair value of Masonite outstanding equity awards converted to Owens Corning time vesting RSUs35 
Repayment of Masonite term loan facility216 
Total transaction consideration$3,186 
The closing cash as part of consideration was calculated at the price of $133.00 per outstanding Masonite common share. At the close of the acquisition of Masonite, there were 22.07 million Masonite common shares outstanding. The fair value of Owens Corning common stock underlying Masonite outstanding equity awards that have been converted into awards with respect to Owens Corning common stock is calculated as follows:
(In millions, except share and per share amounts)
Amount
Number of Masonite stock awards outstanding (a)639,608 
Exchange ratio (b)0.7642
Owens Corning equity awards issued for Masonite outstanding equity awards488,778 
10-day weighted average closing share price of Owens Corning common stock (c)$174.03 
Fair value of Owens Corning time vesting RSUs issued for Masonite outstanding equity awards$85 
Less: Fair value allocated to post-transaction compensation expense(50)
Fair value of awards included in transaction consideration$35 
(a)    Represents the Masonite stock awards that converted into Owens Corning equity awards upon completion of the acquisition of Masonite, based on awards outstanding at May 15, 2024. Masonite equity awards include awards issued under various stock incentive plans of Masonite.
(b)    The exchange rate was determined by the consideration amount divided by the volume weighted average closing sale price of one share of Owens Corning common stock for the ten consecutive trading days ended May 15, 2024, in accordance with the terms of the Arrangement Agreement.
(c)    The ten-day weighted average closing share price was calculated for the ten consecutive trading days ended May 15, 2024, in accordance with the terms of the Arrangement Agreement.
On May 15, 2024, the effective date of the Arrangement, the Company transferred consideration to Masonite to repay the Masonite 2027 term loan facility (the "Masonite term loan facility"). This repayment was required by the change in control provision within the terms of the Masonite term loan facility.
The Company has applied the acquisition method of accounting in accordance with Accounting Standards Codification ("ASC") Topic 805, Business Combinations, and recognized assets acquired and liabilities assumed at their fair values as of the effective date of the Arrangement, with the excess purchase consideration recorded to goodwill. The Company continued to obtain information to complete its valuation of certain assets and liabilities, during the twelve month period subsequent to the close of the transaction. During this time, the Company recorded measurement period adjustments to the purchase price allocation. The Company finalized the valuation of the assets acquired and liabilities assumed as of May 15, 2025.
The following table summarizes the acquisition date fair value net of measurement period adjustments of net tangible and intangible assets acquired, net of liabilities assumed as part of the Arrangement:
(In millions)As originally reportedMeasurement period adjustmentsAs adjusted
Cash and cash equivalents$282 $— $282 
Receivables, net330 — 330 
Inventories379 (2)377 
Other current assets82 (4)78 
Property, plant and equipment, net861 (3)858 
Operating lease right-of-use assets253 — 253 
Intangible assets1,579 (221)1,358 
Deferred income taxes14 — 14 
Other non-current assets91 — 91 
Total assets3,871 (230)3,641 
Accounts payable196 — 196 
Current operating lease liabilities28 — 28 
Other current liabilities187 6 193 
Long-term debt867 — 867 
Non-current operating lease liabilities235 — 235 
Deferred income taxes413 (43)370 
Other non-current liabilities32 13 45 
Net assets acquired1,913 (206)1,707 
Non-controlling interest(35)— (35)
Goodwill1,308 206 1,514 
Total net assets acquired$3,186 $— $3,186 
The details on the methodology and significant inputs used for fair value of valuation are outlined below.
Goodwill
The purchase consideration allocation resulted in $1.5 billion of goodwill. During the preliminary period, the Company increased the value of goodwill by $206 million. The goodwill is not deductible for tax purposes. The factors contributing to the recognition of the amount of goodwill are based on several strategic and synergistic benefits that are expected to be realized from the acquisition.
Receivables
The fair value of receivables acquired was $330 million, with a gross contractual amount of $331 million. The Company expects $1 million to be uncollectible.
Inventory
The fair value of inventory was determined by the market selling price of the inventory, less the remaining manufacturing and selling costs and a normal profit margin on those manufacturing and selling efforts. The fair value of inventory has been stepped up by $18 million, this amount has been fully amortized to Cost of Sales as the inventory was sold.
Property, Plant and Equipment
The fair value of property, plant and equipment of $858 million was determined using cost and market approaches. The cost approach reflects the amount that would be required to replace the asset to service capacity, this approach was used where there was historical data available. Where there was not historical data available the market approach was used, this approach reflects recent sales of identical or comparable assets.
Intangible Assets
The fair value of acquired intangible assets was $1.4 billion. During the preliminary period, the Company reduced the value of acquired intangibles by $221 million, as we continued to obtain information used to determine the fair value. There were no material impacts to the Consolidated Statements of Earnings as a result of this adjustment. The fair value of customer relationships was determined using the multi-period excess earnings method. Key assumptions under this method are the revenue growth rate, adjusted EBITDA margin (including the adjusted terminal EBITDA margin), customer attrition rate, discount rate, tax rate and contributory asset charges. The fair value of trade names were determined using the relief from royalty method. Key assumptions under this method are future cash flow estimates, royalty rate and discount rate.
(In millions, except useful life amounts)Estimated
Useful Life
(in years)		Estimated
Asset
Fair Value
Customer relationships
10 - 21
$979 
Technology
5
120 
Trademarks and trade names (indefinite-lived)Indefinite240 
Trademarks and trade names
10
19 
Identifiable intangible assets, net$1,358 
Debt
The fair value of Masonite's unsecured senior notes was determined using the market approach, based on the trading value of the notes in the market.
Joint Ventures and Noncontrolling Interests
The Company's acquisition of Masonite included joint ventures with Dominance Industries, Inc., 45% owned, and Vanair Design Inc., 30% owned. As a result of the Masonite acquisition, we also recognized a 25% noncontrolling interest in Sacopan Inc. for the portion owned by a third party and a 50% non-controlling interest in Magna Foremost SDN BHD for the portion owned by a third party. The value of these investments and non-controlling interests were determined using an equally weighted value from the income approach and the market approach.
Pro Forma Financial Information from Continuing Operations
The following table summarizes, on an unaudited pro forma basis, the combined results of operations from continuing operations of the Company for the nine months ended September 30, 2024, assuming the acquisition had occurred on January 1, 2023.
Nine Months Ended September 30,
(In millions)2024
Pro Forma net sales from continuing operations$8,177 
Pro Forma net earnings from continuing operations attributable to Owens Corning$927 
The pro forma financial information includes certain adjustments to adhere to the Company's accounting policies and adjustments to the historical results with pro forma adjustments, net of tax, that assume the acquisition occurred on January 1, 2023. This includes removing the results of the Architectural segment that was sold by Masonite prior to the close of the Arrangement, increased depreciation expense to reflect the fair value of property, plant and equipment, and increased amortization expense related to the fair value of identifiable amortizable intangible assets. In addition, adjustments were made to reflect the interest, discount amortization, and capitalized financing cost amortization for the 2027, 2034 and 2054 senior notes that were issued to pay off the 364-Day Credit Facility in the comparative pro forma period, see Note 12 for further detail. Finally, adjustments were made to remove interest expense for the pro forma period related to the Masonite term loan facility that was paid off at closing as part of the consideration for the Arrangement.
Significant adjustments to the pro forma financial information are as follows:
1.Net sales were decreased by $119 million for the nine months ended September 30, 2024, to remove the sales of the Architectural segment that was sold by Masonite prior to the close of the Arrangement.
2.Net earnings were increased by $56 million for the nine months ended September 30, 2024, to remove transaction costs incurred by Masonite.
3.Net earnings were increased by $49 million for the nine months ended September 30, 2024, to move transaction costs incurred by the Company to the beginning of the comparative period.
4.Net earnings were decreased by $49 million for the nine months ended September 30, 2024, to reflect the interest expense, discount amortization, and capitalized financing cost amortization for the 2027, 2034 and 2054 senior notes that were issued to pay off the 364-Day Credit Facility.
5.Net earnings were decreased by $91 million for the nine months ended September 30, 2024, to give effect to the tax impact of pro forma adjustments.
The pro forma financial information does not reflect any anticipated synergies or dis-synergies, operating efficiencies or cost savings that may result from the Arrangement and integration costs that may be incurred.
v3.25.3
DIVESTITURES
 9 Months Ended
Sep. 30, 2025
Discontinued Operations and Disposal Groups [Abstract]  
DIVESTITURES DISCONTINUED OPERATIONS
During the fourth quarter of 2024, the Company determined that certain asset groups should be tested for recoverability, primarily as a result of the progression of the strategic review of GR. Recoverability of the long-lived assets was measured by comparing the carrying amount of the asset groups to the future net undiscounted cash flows expected to be generated by the asset groups. Specifically for the GR asset group, the Company used an undiscounted cash flow model giving consideration to probability weighted cash flows of differing outcomes of the strategic review. The comparison indicated that one of the asset groups, the GR asset group, was not recoverable.
Fair value of the GR asset group was calculated using a discounted cash flow model and market information obtained through the strategic review to estimate the fair value of the asset group, with weighting applied. As a result of the analysis performed, the Company recorded pre-tax asset impairment charges for the amount by which the carrying value exceeded its fair value of $483 million for the year ended December 31, 2024, which was included in Impairment due to strategic review on the Consolidated Statements of Earnings within the 2024 Form 10-K. These charges include $439 million related to property, plant and equipment, $30 million related to operating lease right-of-use assets and $14 million related to definite-lived intangible assets.
On February 13, 2025, the Company entered into a definitive agreement ("GR Agreement") for the sale of GR for a purchase price of approximately $436 million, less costs to sell. As of September 30, 2025, the estimated purchase price was $498 million, net of cash, less costs to sell. The change since signing is due to the changes in customary and transaction-specific price adjustments which are subject to further changes through the date of the final closing adjustments. The purchase price is inclusive of $225 million of promissory notes to be issued to the Company by the purchasers. The GR business, historically part of the Company’s Composites segment, manufactures, fabricates, and sells glass fiber reinforcements for a wide variety of applications in wind energy, infrastructure, industrial, transportation and consumer markets.
The transaction represented a strategic shift that has a major effect on the Company's operations and financial results and therefore, beginning with the quarterly report on Form 10-Q for the period ended March 31, 2025, and including this quarterly report on Form 10-Q for the period ended September 30, 2025, GR’s financial results are reflected in the Company’s consolidated financial statements as discontinued operations for all periods presented.
As a result of classifying GR as a discontinued operation, a portion of the Goodwill from our former Composites reporting unit was allocated to the balance sheets of the discontinued operation. As of the date of classification of GR as a discontinued operation, the Company determined the amount of Goodwill to allocate based on the relative fair values of the discontinued operation and the former Composites reporting unit. This resulted in an allocation of $98 million of Goodwill to the discontinued operation.
After allocating Goodwill to the discontinued operation, as well as at the end of each subsequent quarter, the Company compared the carrying value of the discontinued operation to the fair value of the discontinued operation, defined as the sale price less estimated selling costs. During the three and nine months ended September 30, 2025, the Company incurred a pre-tax loss on classification as discontinued operations of $28 million and $409 million, respectively. The loss is presented within Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax, on the Consolidated Statements of Earnings. An estimated valuation allowance of $379 million is recorded within Non-current assets of discontinued operations, on the Consolidated Balance Sheets.
The following table summarizes Earnings from discontinued operations attributable to Owens Corning, net of tax included within the Consolidated Statements of Earnings:

Three Months Ended September 30,Nine Months Ended September 30,
(In millions)
2025202420252024
NET SALES$301 $283 $877 $858 
COST OF SALES245 226 679 695 
OPERATING EXPENSES
Marketing and administrative expenses18 21 53 63 
Loss from classification as discontinued operation28 — 409 — 
Other expense (income), net10 (1)15 (3)
Total operating expenses56 20 477 60 
Interest expense, net2 1 4 3 
Income tax (benefit) expense(3)2 35 16 
NET EARNINGS (LOSS) FROM DISCONTINUED OPERATIONS ATTRIBUTABLE TO OWENS CORNING, NET OF TAX$1 $34 $(318)$84 
Major classes of assets and liabilities of discontinued operations include the following:
(In millions)
September 30, 2025December 31, 2024
ASSETS
CURRENT ASSETS
Cash and cash equivalents$57 $40 
Receivables, less allowance126 104 
Inventories218 260 
Other current assets23 23 
Current assets of discontinued operations424 427 
Property, plant and equipment, net414 346 
Goodwill100 98 
Deferred income taxes4 46 
Valuation allowance for discontinued operations(379)— 
Other non-current assets104 89 
Non-current assets of discontinued operations$243 $579 
LIABILITIES
CURRENT LIABILITIES
Accounts payable$109 $129 
Other current liabilities71 97 
Current liabilities of discontinued operations180 226 
Other liabilities106 95 
Non-current liabilities of discontinued operations$106 $95 
Cash flows related to discontinued operations are included within the Consolidated Statements of Cash Flows. Selected financial information related to cash flows from discontinued operations are below:

Nine Months Ended September 30,
(In millions)
20252024
Depreciation and amortization$— $72 
Cash paid for property, plant and equipment$64 $55 
DIVESTITURES
On November 4, 2024, the Company entered into a related party agreement to sell its building materials business in China and Korea to a member of the business' management team. The disposal further aligns with the strategy to reshape the Company to focus on residential and commercial building products in North America and Europe. The transaction included six insulation manufacturing facilities in China and a roofing manufacturing facility in Korea. The building materials business, within the Insulation segment, represented annual revenues of approximately $130 million. The Company completed the transaction in July 2025 and is in the process of finalizing certain related transfers, which are expected to be completed by the end of the first quarter of fiscal year 2026.
During the fourth quarter of 2024, the Company reclassified $2 million as held for sale within Other current liabilities on the Consolidated Balance Sheets. The Company also recorded the assets at the fair value less cost to sell, which was less than the carrying value and resulted in an impairment of $91 million primarily related to Property, Plant and Equipment and Goodwill. The impairment was included in Loss on sale of business on the Consolidated Statements of Earnings within the Company's 2024 Form 10-K. The Company estimated the fair value of these assets, less cost to sell, using Level 3 inputs.
During the three and nine months ended September 30, 2025, the Company incurred an additional loss of $2 million and $28 million, respectively, as a result of closing the sale, amendments to the related party agreement and changes in working capital. This loss is included within Loss on sale of business on the Consolidated Statements of Earnings.
v3.25.3
WARRANTIES
 9 Months Ended
Sep. 30, 2025
Product Warranties Disclosures [Abstract]  
WARRANTIES WARRANTIES
The Company records a liability for warranty obligations at the date the related products are sold. Adjustments are made as new information becomes available. Please refer to Note 1 of the Consolidated Financial Statements within the 2024 Form 10-K for information about our separately-priced extended warranty contracts. A reconciliation of the warranty liability is as follows:

Nine Months Ended September 30,
(In millions)20252024
Beginning balance$99 $97 
Amounts accrued for current year20 15 
Acquired obligations— 4 
Settlements of warranty claims(24)(17)
Ending balance$95 $99 
v3.25.3
RESTRUCTURING
 9 Months Ended
Sep. 30, 2025
Restructuring and Related Activities [Abstract]  
RESTRUCTURING RESTRUCTURING
The Company may incur restructuring, and other exit costs in connection with its global cost reduction, product line and productivity initiatives and the Company’s growth strategy.
Roofing Integration Restructuring
In September 2025, the Company took actions to reduce costs in its Roofing segment, primarily through relocation of its lumber facility. These actions are expected to result in cumulative charges of approximately $22 million, primarily related to accelerated depreciation, asset write-offs, and other exit costs. During the first nine months of 2025, the Company recorded $7 million of charges, including non-cash charges of $6 million related to other exit costs and accelerated depreciation and $1 million of cash charges primarily related to severance.
Building Materials Business Sale Restructuring
On November 4, 2024, the Company entered into a related party agreement to sell its Insulation segment's building materials business in China and Korea to a member of the business’ management team. During 2024, the Company recorded the assets at the fair value less cost to sell, which was less than the carrying value and resulted in an impairment of $91 million related primarily to Property, Plant and Equipment and Goodwill.
Following the signing of the agreement, the Company took actions to reduce headcount and implement cost savings initiatives. These actions are expected to result in cumulative costs of approximately $15 million, primarily related to severance and other exit costs. During the first nine months of 2025, the Company recorded $2 million of income primarily related to a reduction in severance. The Company does not expect to recognize significant incremental costs related to these actions.
Acquisition-Related Restructuring
Following the acquisition of Masonite, within the Company's Doors segment, the Company took actions to realize expected synergies from the newly acquired operations. In June 2025, the Company announced the closure of the Prineville, Oregon facility. In the third quarter of 2025, the Company announced the closure of the Greenville, Texas facility.
In connection with the Prineville closure, the Company estimates it will incur cash charges of approximately $12 million, primarily related to contract termination costs, severance and other exit costs, and non-cash charges of approximately $30 million, primarily related to accelerated depreciation and write-offs of inventory.
In connection with the Greenville closure, the Company estimates it will incur cash charges of approximately $7 million, primarily related to severance and other exit costs, and non-cash charges of approximately $10 million, primarily related to accelerated depreciation.
The Company is continuing to review synergies as a result of this acquisition and expects to incur a material amount of incremental costs throughout 2025 and into future years.
During the first nine months of 2025, the Company recorded $37 million of charges, including non-cash charges of $24 million related to accelerated depreciation and $13 million of cash charges primarily related to severance.
Global Composites Restructuring
In December 2023, the Company took actions to reduce costs throughout its former Composites segment given then current market conditions, primarily through global workforce reductions, as well as streamlining manufacturing and supply chain operations. These actions primarily include salaried workforce reductions and the relocation of the Changzhou, China operations to Hangzhou, China.
In connection with these actions, the Company estimates it will incur cash charges in the range of $20 million to $30 million, primarily related to severance and other exit costs, including termination costs, and non-cash charges in the range of $15 million to $20 million, primarily related to accelerated depreciation.
During the first nine months of 2025, the Company incurred charges of $5 million primarily related to severance. The Company does not expect to recognize significant incremental costs related to these actions.
Protective Packaging Exit
In May 2023, the Company made the decision to exit the Protective Packaging business within the Roofing segment, including the production and sale of wood packaging, metal packaging and custom products. Exiting Protective Packaging allowed the Company to focus resources on the growth of its building materials products, which supports the future growth aspirations of the enterprise. With the exit of the Protective Packaging business, the Company closed its plants in Dorval, Quebec and Mission, British Columbia, Canada. The Company also ceased operations at its Qingdao, China facility.
In connection with the exit of the Protective Packaging business, the Company estimated that it would incur cash charges of approximately $15 million, primarily related to severance and other exit costs. Additionally, the Company expected to incur total non-cash charges in the range of $70 million to $75 million, primarily related to accelerated depreciation of property, plant and equipment and accelerated amortization of definite-lived intangibles.
During the first nine months of 2025, the Company did not incur any charges relating to this project. The Company does not expect to incur any future charges.
Wabash Facility Closure
In April 2023, the Company took actions to support its strategy to operate a flexible and cost-efficient manufacturing network through decisions to relocate the Wabash, Indiana mineral wool operations to Joplin, Missouri, and to exit the U.S. granulated mineral wool market. These actions resulted in cumulative costs of approximately $30 million in 2023, primarily related to severance and accelerated depreciation.
During the first nine months of 2025, the Company did not incur any charges relating to this project. The Company does not expect to incur any future charges.
European Operating Structure Optimization
In March 2023, the Company took actions to optimize the operating structure of its segments across Europe to increase its competitiveness. These actions are expected to result in cumulative costs of approximately $20 million, primarily related to severance and other exit costs. During the first nine months of 2025, the Company recorded $3 million of income primarily related to a reduction in severance. The Company does not expect to recognize significant incremental costs related to these actions.
Consolidated Statements of (Loss) Earnings From Continuing Operations Classification
The following table presents the impact and respective location of total restructuring on the Consolidated Statements of Earnings From Continuing Operations, which are included within Corporate, Other and Eliminations:

Three Months Ended September 30,Nine Months Ended September 30,
(In millions)Location2025202420252024
Accelerated depreciationCost of sales$(16)$(1)$(25)$(8)
Other exit costsCost of sales(6)(1)(7)(6)
Other exit costsMarketing and administrative expenses— — (1)(1)
SeveranceOther expense, net(1)1 (10)(47)
Other exit costsOther expense, net— — (1)— 
Total restructuring costs$(23)$(1)$(44)$(62)
Summary of Unpaid Liabilities
The following table summarizes the status of the unpaid liabilities from the Company’s restructuring activities:
September 30, 2025
(In millions)Roofing Integration RestructuringAcquisition-related RestructuringBuilding Materials Business SaleGlobal Composites RestructuringProtective Packaging ExitWabash Facility ClosureEuropean Operating Structure Optimization
Balance at December 31, 2024$— $3 $6 $14 $— $— $5 
Restructuring costs7 37 (2)5 — — (3)
Payments— (10)(3)(7)— — (2)
Accelerated depreciation and other non-cash items(6)(24)— — — — — 
Balance at September 30, 2025$1 $6 $1 $12 $— $— $— 
Cumulative charges incurred$7 $109 $3 $43 $83 $33 $12 
As of September 30, 2025, the remaining liability balance was comprised of $20 million related to severance, which the Company expects to pay over the next twelve months.
September 30, 2024
(In millions)Acquisition-related RestructuringGlobal Composites RestructuringProtective Packaging ExitWabash Facility ClosureEuropean Operating Structure Optimization
Balance at December 31, 2023$— $12 $1 $3 $6 
Restructuring costs45 10 4 — 3 
Payments(21)(4)(3)(3)(4)
Accelerated depreciation and other non-cash items(23)(8)(2)— — 
Balance at September 30, 2024$1 $10 $— $— $5 
Cumulative charges incurred$45 $26 $82 $33 $15 
v3.25.3
DEBT
 9 Months Ended
Sep. 30, 2025
Debt Disclosure [Abstract]  
DEBT DEBT
Details of the Company’s outstanding long-term debt, as well as the fair values, are as follows:
September 30, 2025December 31, 2024
(In millions)Carrying ValueFair ValueCarrying ValueFair Value
3.400% senior notes, net of discount and financing fees, due 2026
$399 99 %$399 98 %
5.500% senior notes, net of discount and financing fees, due 2027
498 102 %497 102 %
5.375% senior notes, net of discount and financing fees, due 2028
— — %29 99 %
3.950% senior notes, net of discount and financing fees, due 2029
448 99 %447 95 %
3.500% senior notes, net of discount and financing fees, due 2030
2 90 %2 89 %
3.500% senior notes, net of discount and financing fees, due 2030
342 97 %338 93 %
3.875% senior notes, net of discount and financing fees, due 2030
298 98 %298 94 %
5.700% senior notes, net of discount and financing fees, due 2034
791 105 %790 102 %
7.000% senior notes, net of discount and financing fees, due 2036
369 115 %369 112 %
4.300% senior notes, net of discount and financing fees, due 2047
590 83 %589 80 %
4.400% senior notes, net of discount and financing fees, due 2048
391 83 %391 80 %
5.950% senior notes, net of discount and financing fees, due 2054
683 103 %683 99 %
Various finance leases, due through 2050 (a)
303 100 %267 100 %
Total long-term debt5,114 N/A5,099 N/A
Less – current portion of senior notes399 99 %— — %
Less – current portion of finance leases and other (a)37 100 %32 100 %
Long-term debt, net of current portion$4,678 N/A$5,067 N/A
(a)The Company determined that the book value of the above noted long-term debt instruments approximates fair value.
The fair values of the Company’s outstanding long-term debt instruments were estimated using market observable inputs, including quoted prices in active markets, market indices and interest rate measurements. Within the hierarchy of fair value measurements, these are Level 2 fair values.
Senior Notes
The Company issued $500 million of 2027 senior notes with an annual interest rate of 5.500%, $800 million of 2034 senior notes with an annual interest rate of 5.700% and $700 million of 2054 senior notes with an annual interest rate of 5.950% on May 31, 2024. The proceeds from these notes were used to repay a portion of the outstanding borrowings under the 364-Day Credit Facility (as defined below) that was used to fund a portion of the purchase of Masonite in the second quarter of 2024 and to pay related fees and expenses.
On May 1, 2024, in connection with the acquisition of Masonite, we commenced an offer to exchange (the “Exchange Offer”) any and all of Masonite’s outstanding 3.50% Senior Notes due 2030 (the “Masonite 2030 notes”) for new 3.50% Senior Notes due 2030 of Owens Corning (the “Owens Corning 2030 notes”). On May 22, 2024, 99.51% of the outstanding Masonite 2030 notes were exchanged and we issued $373 million aggregate principal amount of Owens Corning 2030 notes, which was a non-cash financing transaction for the Company. Interest on the notes is payable semiannually in arrears on February 15 and August 15 each year, beginning on August 15, 2024. Following the settlement of the Exchange Offer, approximately $2 million of the Masonite 2030 notes that were not exchanged remain outstanding, which has been recorded on the Consolidated Balance Sheets.
On April 15, 2024, in connection with the acquisition of Masonite, we commenced a tender offer (the “Tender Offer”) to purchase any and all of Masonite's outstanding 5.375% Senior Notes due 2028 (the “Masonite 2028 notes”) with an aggregate value of $501 million. On May 13, 2024, 94.25% of the outstanding Masonite 2028 notes were validly tendered, with Owens Corning making a cash payment on May 16, 2024 of approximately $480 million, inclusive of $7 million of interest and $1 million premium on tender. Following the settlement of the Tender Offer, approximately $29 million of the Masonite 2028 notes that were not tendered remain outstanding, which has been recorded on the Consolidated Balance Sheets. Interest on the Masonite 2028 notes is payable semiannually in arrears on February 1 and August 1 each year. On February 1, 2025, the
Company issued a par call to repay the remaining portion of its outstanding Masonite 2028 notes for $30 million inclusive of accrued interest.
The Company issued $300 million of 2030 senior notes on May 12, 2020. Interest on the notes is payable semiannually in arrears on June 1 and December 1 each year, beginning on December 1, 2020. The proceeds from these notes were used for general corporate purposes.
The Company issued $450 million of 2029 senior notes on August 12, 2019. Interest on the notes is payable semiannually in arrears on February 15 and August 15 each year, beginning on February 15, 2020. The proceeds from these notes were used to repay $416 million of our 2022 senior notes and $34 million of our 2036 senior notes.
The Company issued $400 million of 2048 senior notes on January 25, 2018. Interest on the notes is payable semiannually in arrears on January 30 and July 30 each year, beginning on July 30, 2018. The proceeds from these notes were used, along with borrowings on a $600 million term loan commitment and borrowings on the Receivables Securitization Facility (as defined below), to fund the purchase of Paroc in the first quarter of 2018.
The Company issued $600 million of 2047 senior notes on June 26, 2017. Interest on the notes is payable semiannually in arrears on January 15 and July 15 each year, beginning on January 15, 2018. A portion of the proceeds from these notes was used to fund the purchase of Pittsburgh Corning in 2017 and for general corporate purposes. The remaining proceeds were used to repay $144 million of our 2019 senior notes and $140 million of our 2036 senior notes.
The Company issued $400 million of 2026 senior notes on August 8, 2016. Interest on the notes is payable semiannually in arrears on February 15 and August 15 each year, beginning on February 15, 2017. A portion of the proceeds from these notes was used to redeem $158 million of our 2016 senior notes. The remaining proceeds were used to pay down portions of our Receivables Securitization Facility and for general corporate purposes. As of September 30, 2025, the $399 million outstanding balance related to the 2026 senior notes was recorded in Long-term debt – current portion on the Consolidated Balance Sheets.
The Company issued $400 million of 2024 senior notes on November 12, 2014. Interest on the notes is payable semiannually in arrears on June 1 and December 1 each year, beginning on June 1, 2015. A portion of the proceeds from these notes was used to repay $242 million of our 2016 senior notes and $105 million of our 2019 senior notes. The remaining proceeds were used to pay down our Senior Revolving Credit Facility (as defined below), finance general working capital needs, and for general corporate purposes. In the fourth quarter of 2024, the Company fully repaid the 2024 senior notes of $400 million at maturity.
The Company issued $550 million of 2036 senior notes on October 31, 2006. Interest on the notes is payable semiannually in arrears on June 1 and December 1 each year, beginning on June 1, 2007. 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 Company's senior notes above, other than the Masonite 2028 notes or the Masonite 2030 notes, 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 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 September 30, 2025.
Senior Revolving Credit Facility
On March 5, 2025, the Company amended its senior revolving credit facility (the “Senior Revolving Credit Facility”) to increase the available principal amount from $1.0 billion to $1.5 billion and to extend the maturity to March 2030. 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, federal funds rate plus a spread or forward-looking term rate based on the Secured Overnight Financing Rate (“Term SOFR”) plus a spread.
The Senior Revolving Credit Facility contains various covenants, including a maximum allowed leverage 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 September 30, 2025.
During the first quarter of 2025, the Company borrowed $30 million under the Senior Revolving Credit Facility, which was subsequently repaid with proceeds from the issuance of CP Notes (as defined below). The Company had no borrowings outstanding and $1.5 billion available under the Senior Revolving Credit Facility as of September 30, 2025.
Receivables Securitization Facility
The receivables securitization facility (the "Receivables Securitization Facility") had a Receivables Purchase Agreement (“RPA”) that is 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, had an RPA with certain financial institutions. On February 25, 2025, the Company amended and restated the RPA to extend the scheduled maturity date to April 2025. Effective March 31, 2025, the Company terminated the Receivables Securitization Facility and RPA.
Under the RPA, the Company had the ability to borrow at the lenders’ cost of funds, which approximated Term SOFR plus a spread. Alternatively, the Company had the ability to borrow at the higher of the United States prime rate or the Overnight Bank Funding Rate plus a spread. The RPA contained various covenants, including a maximum allowed leverage ratio, that the Company believes are usual and customary for a securitization facility.
Owens Corning Receivables LLC’s sole business consisted 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 who were party to the RPA.
During the first quarter of 2025, the Company borrowed $299 million under the Receivables Securitization Facility which was subsequently repaid with proceeds from the issuance of CP Notes.
364-Day Credit Facility
On March 1, 2024, the Company entered into an unsecured term loan agreement in an aggregate principal amount of $3.0 billion, which matures 364 days after the facility is initially funded with a single drawing (the “364-Day Credit Facility”).
In May 2024, to fund a portion of the purchase of Masonite, the Company borrowed $2.8 billion using Term SOFR plus a spread on the 364-Day Credit Facility. As a result of the borrowing, the Company incurred approximately $16 million of financing fees which were amortized to Interest expense, net on the Consolidated Statements of Earnings. During the second quarter of 2024, the Company completely repaid the 364-Day Credit Facility with a combination of proceeds from the issuance of new senior notes, borrowings on the Receivables Securitization Facility and cash on hand. Based on terms of the agreement, no further amounts can be drawn.
Commercial Paper
On March 5, 2025, the Company established a $1.5 billion commercial paper program ("CP Program") for the issuance of unsecured commercial paper notes (the “CP Notes”) with maturities ranging up to 397 days from the date of issuance. The CP Notes may not be voluntarily prepaid or redeemed by the Company prior to maturity and rank pari passu with all existing and future senior unsecured indebtedness of the Company. The proceeds from the CP Notes will be used to finance the Company’s short-term liquidity needs and other general corporate purposes. The Senior Revolving Credit Facility is designated to be a liquidity backstop for the CP Notes outstanding under the CP Program. We do not intend to have outstanding borrowings under the CP Program in excess of available capacity under our Senior Revolving Credit Facility. As of September 30, 2025, there were $40 million of CP Notes outstanding under the CP Program with a weighted average interest rate and weighted average maturity period of 4.25% and 12 days, respectively. The CP Notes are reported net of any discount and are included within Short-term debt on the Company's Consolidated Balance Sheets.
v3.25.3
CONTINGENT LIABILITIES AND OTHER MATTERS
 9 Months Ended
Sep. 30, 2025
Commitments and Contingencies Disclosure [Abstract]  
CONTINGENT LIABILITIES AND OTHER MATTERS CONTINGENT LIABILITIES AND OTHER MATTERS
The Company may be involved in various legal and regulatory proceedings relating to employment, antitrust, tax, product liability, environmental, contracts, intellectual property 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. Except as set forth below under “Litigation and Regulatory Proceedings,” management believes that the amount of any reasonably possible losses in excess of any amounts accrued, if any, with respect to such Proceedings or any other known claim, including the matters described below under the caption Environmental Matters (the “Environmental Matters”), are not material to the Company’s financial statements. While the likelihood is remote, the disposition of the Proceedings and Environmental Matters could have a material impact on the results of operations, cash flows or liquidity in any given reporting period.
Litigation and Regulatory Proceedings
The Company is involved in litigation and regulatory proceedings from time to time in the regular course of its business. The Company believes that adequate provisions for resolution of all contingencies, claims and pending matters have been made for probable losses that are reasonably estimable.
During the second quarter of 2023, the Company’s subsidiary, Paroc Group OY (“Paroc”), which the Company acquired in 2018, notified the appropriate European maritime regulatory authorities that specific products in its marine insulation product line may not meet certain fire safety requirements in accordance with their certifications. Paroc voluntarily withdrew these specific products from the market, issued recalls, and suspended distribution and sales of these products (the “Recalled Products”). Paroc continues to cooperate with the applicable regulatory and government authorities and work with its customers and end-users to assist with remediation for the recall. The Company has included an estimated liability for expected future costs related to the Recalled Products on its Consolidated Balance Sheets as of September 30, 2025 and December 31, 2024. The estimated liability is primarily based on claims received, as well as assumptions related to the estimated costs of the remedy for the Recalled Products. At this time, we cannot estimate a range of loss for any additional costs related to the Recalled Products that exceed the current estimated liability. We reevaluate these assumptions each period and the related liability may be adjusted when factors indicate that the liability is either not sufficient to cover or exceeds the estimated costs related to the Recalled Products. Based on the factors currently known, we believe the appropriate liability has been established at this time. It is reasonably possible that additional costs related to the Recalled Products could be incurred that exceed the estimated liability by amounts that could be material to our Consolidated Financial Statements.
Due to these nonconformances, the Company reviewed the Paroc insulation product portfolio. The review has concluded. In addition to addressing the Recalled Products, the Company continues to assess potential nonconformances related to certain ventilation duct and steel beam insulation products. Paroc suspended sales of these affected insulation products as a precautionary measure while it reviews the potential nonconformances, but has not issued recalls. We expect to incur costs associated with the resolution of this matter. The amount or range of any potential loss cannot be reasonably estimated at this time.
Environmental Matters
The Company has established policies and procedures designed to ensure that its operations are conducted in compliance with all relevant laws and regulations and that enable the Company to meet its high standards for corporate sustainability and environmental stewardship. Our manufacturing facilities are subject to numerous foreign, federal, state and local laws and regulations relating to the presence of hazardous materials, pollution and protection of the environment, including emissions to air, reductions of greenhouse gases, discharges to water, management of hazardous materials, handling and disposal of solid wastes, use of chemicals in our manufacturing processes and remediation of contaminated sites. All Company manufacturing facilities are either ISO 14001 certified or deploy environmental management systems based on ISO 14001 principles. The Company’s 2030 Sustainability Goals include significant global reductions in energy use, water consumption, waste to landfill, and emissions of greenhouse gases, fine particulate matter, and volatile organic air emissions and protection of biodiversity.
Owens Corning is involved in remedial response activities and is responsible for environmental remediation at a number of sites, including certain of its currently owned or formerly owned plants. These responsibilities arise under a number of laws, including, but not limited to, the Federal Resource Conservation and Recovery Act, and similar state or local laws pertaining to the management and remediation of hazardous materials and petroleum. The Company has also been named a potentially responsible party under the U.S. Federal Superfund law, similar state or local laws pertaining to the management and remediation of hazardous materials and petroleum. The Company became involved in these sites as a result of government action or in connection with business acquisitions. As of September 30, 2025, the Company was involved with a total of 25 sites worldwide, including 10 Superfund and state or country equivalent sites and 15 owned or formerly owned sites. None of the liabilities for these sites are individually significant to the Company.
Remediation activities generally involve a potential range of activities and costs related to soil, groundwater and sediment contamination. This can include pre-cleanup activities such as fact-finding and investigation, risk assessment, feasibility studies, remedial action design and implementation (where actions may range from monitoring to removal of contaminants, to installation of longer-term remediation systems). A number of factors affect the cost of environmental remediation, including the number of parties involved in a particular site, the determination of the extent of contamination, the length of time the remediation may require, the complexity of environmental regulations, variability in clean-up standards, the need for legal action and changes in remediation technology. Taking these factors into account, Owens Corning reasonably estimates the costs of remediation to be paid over a period of years. The Company accrues an amount on an undiscounted basis, when a liability is probable and reasonably estimable. Actual cost may differ from these estimates for the reasons mentioned above. At
September 30, 2025, the Company had an accrual totaling $3 million for these costs, of which the current portion is $1 million. Changes in required remediation procedures or timing of those procedures, or discovery of contamination at additional sites, could result in material increases to the Company’s environmental obligations.
v3.25.3
STOCK COMPENSATION
 9 Months Ended
Sep. 30, 2025
Share-Based Payment Arrangement [Abstract]  
STOCK COMPENSATION STOCK COMPENSATION
Description of the Plan
On April 20, 2023, the Company’s stockholders approved the Owens Corning 2023 Stock Plan (the “2023 Stock Plan”), which authorizes grants of stock options, stock appreciation rights, stock awards (including restricted stock awards, restricted stock units and bonus stock awards), performance share awards and performance share units. At September 30, 2025, the number of shares remaining available under the 2023 Stock Plan for all stock awards was 2.6 million.
Prior to the 2023 Stock Plan, employees were eligible to receive stock awards under the Owens Corning 2019 Stock Plan.
Total Stock-Based Compensation Expense
Stock-based compensation expense included in both Marketing and administrative expenses and Net earnings/(loss) from discontinued operations attributable to Owens Corning, net of tax in the accompanying Consolidated Statements of Earnings is as follows:
Three Months Ended
September 30,		Nine Months Ended
September 30,
(In millions)2025202420252024
Total stock-based compensation expense from continuing operations$14 $20 $50 $70 
Total stock-based compensation expense from discontinued operations1 1 4 4 
Total stock-based compensation expense$15 $21 $54 $74 
Restricted Stock Units
The Company has granted restricted stock units (“RSUs”) under its stockholder-approved stock plans. Generally, all outstanding RSUs will fully settle in stock. Compensation expense for RSUs is measured based on the closing market price of the stock at date of grant and is recognized on a straight-line basis over the vesting period, which is typically three to four years. The 2023 Stock Plan allows alternate vesting schedules for death, disability and retirement. The weighted-average grant date fair value of RSUs granted under the 2023 Stock Plan in 2025 was $170.89.
Masonite Equity Awards
On May 15, 2024, the Company converted outstanding Masonite stock-based incentive awards to Masonite employees at a 0.8 equity award exchange ratio. Masonite equity awards include outstanding and unvested awards of restricted stock units and performance stock units (“PRSUs”) under the Masonite International Corporation 2021 Omnibus Incentive Plan (“Masonite Stock Plan”) that were held by employees of Masonite, which were exchanged for time-vesting restricted stock units of Owens Corning RSUs in connection with the completion of the transactions contemplated by the Arrangement Agreement. The converted stock-based incentive awards include 0.2 million PRSUs and 0.3 million restricted stock units.
The equity award exchange ratio was determined by the consideration amount of $133 per share divided by the volume weighted average closing sale price of one share of Owens Corning common stock for the ten consecutive trading days ended March 15, 2024 of $174.03 per share, in accordance with the terms of the Arrangement Agreement.
In accordance with the Arrangement Agreement, the number of Masonite shares underlying the PRSUs was equal to (i) 107.33% of target for PRSUs granted in February 2022, (ii) 100% of target for PRSUs granted in August 2022 and (iii) 122% of target for PRSUs granted in February 2023.
The fair value of the Owens Corning RSUs issued for Masonite outstanding equity awards was $85 million as of the date of acquisition, of which $35 million was related to pre-combination expense and was included in the purchase price. The remaining portion of $50 million relates to post-combination expense, of which $26 million was accelerated as of September 30, 2025. As of September 30, 2025, the future unrecognized expense related to the converted outstanding RSUs was approximately $6 million which will be recognized over the remaining service period of approximately 1.17 years. Please refer to Notes 8 and 11 of the Consolidated Financial Statements for further information. Future equity-based awards to Company employees who were former Masonite employees may be granted from the remaining available shares under the Masonite Stock Plan. At September 30, 2025, the number of shares remaining available under the Masonite Stock Plan was 0.6 million shares of Owens Corning common stock.
The following table summarizes the Company’s RSU activity:

Number of RSUsWeighted-Average
Fair Value
Balance at December 31, 20241,249,146 $107.31 
Granted305,753 170.89 
Vested(432,800)112.39 
Forfeited(75,903)141.76 
Balance at September 30, 20251,046,196 $121.28 
As of September 30, 2025, there was $56 million of total unrecognized compensation cost related to RSUs. This total includes $6 million of unrecognized compensation related to converted Masonite equity awards. The remaining $50 million of unrecognized compensation cost is related to RSUs granted under both the Owens Corning Stock Plans and Masonite Stock Plan. That cost is expected to be recognized over a weighted-average period of 1.83 years. The total grant date fair value of shares vested during the nine months ended September 30, 2025 and 2024 was $49 million and $73 million, respectively.
Performance Share Units
The Company has granted performance share units (“PSUs”) as a part of its long-term incentive plan. All outstanding PSUs will fully settle in stock. The amount of shares ultimately distributed from all PSUs is contingent on meeting internal company-based metrics or an external-based stock performance metric.
In the nine months ended September 30, 2025, the Company granted both internal Company-based and external-based metric PSUs.
Internal Company-based metrics
The internal Company-based metric PSUs are based on various Company metrics and typically vest after a three-year period. The amount of stock distributed will vary from 0% to 200% of PSUs awarded depending on each award’s design and performance versus the company-based metrics.
The initial fair value for all internal company-based metric PSUs assumes that the performance goals will be achieved and is based on the grant date stock price. This assumption is monitored quarterly and if it becomes probable that such goals will not be achieved or will be exceeded, compensation expense recognized will be adjusted and previous surplus compensation expense recognized will be reversed or additional expense will be recognized. The expected term represents the period from the grant date to the end of the three-year performance period. Pro-rata vesting may be utilized in the case of death, disability or retirement and awards, if earned, will be paid at the end of the three-year period.
The following table provides a summary of the grant date fair values of the internal Company-based metric PSUs:
Nine Months Ended September 30,
20252024
Grant date fair value of units granted$171.94 $147.18 
External-based metrics
The external-based metric PSUs vest after a three-year period. Outstanding grants issued in or after 2023 are based on the Company’s total stockholder return relative to a peer group. The amount of stock distributed will vary from 0% to 200% of PSUs awarded depending on the relative stockholder return performance. The fair value of external-based metric PSUs has been estimated at the grant date using a Monte Carlo simulation that uses various assumptions.
The following table provides a summary of the assumptions for PSUs granted in 2025 and 2024:
Nine Months Ended September 30,
20252024
Expected volatility32.78%33.88%
Risk free interest rate4.14%3.94%
Expected term (in years)2.902.91
Grant date fair value of units granted$221.54$195.95
The risk-free interest rate was based on zero-coupon United States Treasury STRIPS at the grant date. The expected term represents the period from the grant date to the end of the three-year performance period.
PSU Summary
As of September 30, 2025, there was $21 million total unrecognized compensation cost related to PSUs. That cost is expected to be recognized over a weighted-average period of 1.83 years.
The following table summarizes the Company’s PSU activity:

Number of PSUsWeighted-Average
Grant Date
Fair Value
Balance at December 31, 2024219,075 $117.23 
Granted120,321 188.47 
Vested— — 
Forfeited(55,338)155.49 
Balance at September 30, 2025284,058 $147.55 
Employee Stock Purchase Plan
The Owens Corning Employee Stock Purchase Plan (“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. On April 16, 2020, the Company’s stockholders approved the Amended and Restated Owens Corning Employee Stock Purchase Plan, which increased the number of shares available for issuance under the plan by 4.2 million shares. As of September 30, 2025, 2.9 million shares remain available for purchase.
Included in total stock-based compensation expense is $2 million and $7 million of expense related to the Company’s ESPP recognized during the three and nine months ended September 30, 2025, respectively. During the three and nine months ended September 30, 2024, the Company recognized expense of $2 million and $6 million, respectively, related to the Company’s ESPP. As of September 30, 2025, there was $1 million of total unrecognized compensation cost related to the ESPP.
v3.25.3
EARNINGS PER SHARE
 9 Months Ended
Sep. 30, 2025
Earnings Per Share [Abstract]  
EARNINGS PER SHARE EARNINGS PER SHARE
The following table is a reconciliation of weighted-average shares for calculating basic and diluted earnings per share:

Three Months Ended
September 30,		Nine Months Ended
September 30,
(In millions, except per share amounts)
2025202420252024
Net (loss) earnings from continuing operations attributable to Owens Corning
$(495)$287 $94 $821 
Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax1 34 (318)84 
NET (LOSS) EARNINGS ATTRIBUTABLE TO OWENS CORNING
$(494)$321 $(224)$905 
Weighted-average number of shares outstanding used for basic earnings per share83.4 87.0 84.7 87.2 
Unvested restricted stock units and performance share units— 0.9 0.6 0.8 
Weighted-average number of shares outstanding and common equivalent shares used for diluted earnings per share83.4 87.9 85.3 88.0 
(Loss) Earnings per common share attributable to Owens Corning common stockholders:
Basic - continuing operations$(5.93)$3.30 $1.11 $9.42 
Basic - discontinued operations$0.01 $0.39 $(3.75)$0.96 
Basic$(5.92)$3.69 $(2.64)$10.38 
Diluted - continuing operations$(5.93)$3.26 $1.10 $9.33 
Diluted - discontinued operations$0.01 $0.39 $(3.73)$0.95 
Diluted$(5.92)$3.65 $(2.63)$10.28 
For the three and nine months ended September 30, 2025 and September 30, 2024, there were no unvested RSUs or PSUs that had an anti-dilutive effect on earnings per share.
On May 13, 2025, the Board of Directors approved a new share repurchase program under which the Company is authorized to repurchase up to 12 million shares of the Company’s outstanding common stock (the “2025 Repurchase Authorization”). On December 1, 2022, the Board of Directors approved a share repurchase program under which the Company is authorized to repurchase up to 10 million shares of the Company’s outstanding common stock (together with the 2025 Repurchase Authorization, the "Repurchase Authorizations"). The Repurchase Authorizations enable the Company to repurchase shares through the open market, privately negotiated, or other transactions. The actual number of shares repurchased will depend on timing, market conditions and other factors and will be at the Company’s discretion.
The Company repurchased 3.8 million shares of its common stock for $545 million, inclusive of applicable taxes, during the nine months ended September 30, 2025, under the Repurchase Authorizations. As of September 30, 2025, 14.6 million shares remain available for repurchase under the Repurchase Authorizations.
The Company repurchased 2.1 million shares of its common stock for $332 million, inclusive of applicable taxes, during the nine months ended September 30, 2024.
v3.25.3
INCOME TAXES
 9 Months Ended
Sep. 30, 2025
Income Tax Disclosure [Abstract]  
INCOME TAXES INCOME TAXES
The following table provides the Income tax expense and effective tax rate for the periods indicated:

Three Months Ended September 30,Nine Months Ended September 30,
(In millions, except effective tax rate)
2025202420252024
Income tax expense$102 $118 $300 $302 
Effective tax rate-26 %29 %77 %27 %
The difference between the effective tax rate and the U.S. federal statutory tax rate of 21% for the three and nine months ended September 30, 2025 is primarily due to U.S. state and local income tax expense, foreign rate differential and non-deductible goodwill impairment.
The difference between the effective tax rate and the U.S. federal statutory tax rate of 21% for the three months ended September 30, 2024 is primarily due to U.S. state and local income tax expense, foreign rate differential and U.S. federal taxes on foreign earnings. The difference between the effective tax rate and the U.S. federal statutory tax rate of 21% for the nine months ended September 30, 2024 is primarily due to U.S. state and local income tax expense and foreign rate differential.
On July 4, 2025, the One Big Beautiful Bill ("OBBB") Act, which includes a broad range of tax reform provisions, was signed into law in the United States.
v3.25.3
CHANGES IN ACCUMULATED OTHER COMPREHENSIVE DEFICIT
 9 Months Ended
Sep. 30, 2025
Equity [Abstract]  
CHANGES IN ACCUMULATED OTHER COMPREHENSIVE DEFICIT CHANGES IN ACCUMULATED OTHER COMPREHENSIVE DEFICIT
The following table summarizes the changes in accumulated other comprehensive income (deficit):
Three Months Ended
September 30,		Nine Months Ended
September 30,

(In millions)
2025202420252024
Currency Translation Adjustment
Beginning balance$(280)$(421)$(534)$(318)
(Loss) gain on foreign currency translation(5)69 249 (34)
Other comprehensive (loss) income, net of tax(5)69 249 (34)
Ending balance$(285)$(352)$(285)$(352)
Pension and Other Postretirement Adjustment
Beginning balance$(189)$(197)$(181)$(196)
Amounts reclassified from AOCI to net earnings, net of tax (a)— — (1)(1)
Amounts classified into AOCI, net of tax1 (4)(6)(4)
Other comprehensive income (loss), net of tax1 (4)(7)(5)
Ending balance$(188)$(201)$(188)$(201)
Hedging Adjustment
Beginning balance$19 $21 $24 $11 
Amounts reclassified from AOCI to net earnings, net of tax (b)— 2 (2)12 
Amounts classified into AOCI, net of tax(1)(1)(4)(1)
Other comprehensive (loss) income, net of tax(1)1 (6)11 
Ending balance$18 $22 $18 $22 
Total AOCI ending balance$(455)$(531)$(455)$(531)
(a)These AOCI components are included in the computation of total Pension and Other postretirement expense and are recorded in Non-operating expense (income).
(b)Amounts reclassified from (loss) gain on cash flow hedges are reclassified from AOCI to income when the hedged item affects earnings and is recognized in Cost of sales or Interest expense, net depending on the hedged item. See Note 5 for additional information.
v3.25.3
Insider Trading Arrangements
 3 Months Ended
Sep. 30, 2025
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.25.3
GENERAL (Policies)
 9 Months Ended
Sep. 30, 2025
Accounting Changes and Error Corrections [Abstract]  
Accounting Pronouncements
Accounting Pronouncements
The following table summarizes recent Accounting Standard Updates ("ASU") issued by the Financial Accounting Standards Board ("FASB") that could have an impact on the Company's Consolidated Financial Statements:
StandardDescriptionEffective Date for CompanyEffect on the
Consolidated Financial Statements
ASU 2025-06 "Intangibles—Goodwill and Other—
Internal-Use Software
(Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software"		The amendments in this update include targeted improvements to recognition guidance for capitalizing software costs, eliminating the previous stage-based model and replacing it with a principles-based framework. January 1, 2028We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.
ASU 2025-05 "Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets"The amendments will be effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. Early adoption is permitted in both interim and annual reporting periods in which financial statements have not yet been issued or made available for issuance.January 1, 2026We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.
ASU 2025-01 "Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40)"The amendment in this update clarifies the effective date of Update 2024-03: public business entities are required to adopt the guidance in annual reporting periods beginning after December 15, 2026, and in interim periods within those annual periods beginning after December 15, 2027.January 1, 2027We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.
ASU 2024-03 "Income Statement – Reporting Comprehensive Income- Expense Disaggregation Disclosures (Subtopic 220-40)"The amendments in this update require disclosure, in the notes to financial statements, of specified information about certain costs and expenses.January 1, 2027We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.
ASU 2024-02 "Codification Improvements - Amendments to Remove References to the Concepts Statements"Amendments in this update remove references to various FASB Concepts Statements.January 1, 2025We have adopted and determined that this guidance did not have a material effect on our Consolidated Financial Statements.
ASU 2024-01 "Compensation - Stock Compensation" (Topic 718): Scope Application of Profits Interest and Similar Awards"This amendment adds an illustrative example to demonstrate how an entity should apply the scope guidance in paragraph 718-10-15-3 to determine whether profits interest and similar awards should be accounted for in accordance with Topic 718.January 1, 2025We have adopted and determined that this guidance did not have a material effect on our Consolidated Financial Statements.
ASU 2023-09 “Income Taxes (Topic 740): Improvements to Income Tax Disclosures”This standard modifies the rate reconciliation and income taxes paid disclosures by requiring consistent categories and greater disaggregation of information in the rate reconciliation, as well as requiring income taxes paid to be disaggregated by jurisdiction.January 1, 2025We have adopted and determined that this guidance did not have a material effect on our Consolidated Financial Statement disclosures.
ASU 2023-07 “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures”The amendments in this update improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses.January 1, 2024We have adopted and determined that this guidance did not have a material effect on our Consolidated Financial Statement disclosures.
ASU 2023-06 “Disclosure Improvements”The amendments in this update modify the disclosure or presentation requirements of a variety of TopicsThe effective date for each topic is contingent on future SEC rule setting.We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.
v3.25.3
DISCONTINUED OPERATIONS (Tables)
 9 Months Ended
Sep. 30, 2025
Discontinued Operations and Disposal Groups [Abstract]  
Disposal Groups, Including Discontinued Operations
The following table summarizes Earnings from discontinued operations attributable to Owens Corning, net of tax included within the Consolidated Statements of Earnings:

Three Months Ended September 30,Nine Months Ended September 30,
(In millions)
2025202420252024
NET SALES$301 $283 $877 $858 
COST OF SALES245 226 679 695 
OPERATING EXPENSES
Marketing and administrative expenses18 21 53 63 
Loss from classification as discontinued operation28 — 409 — 
Other expense (income), net10 (1)15 (3)
Total operating expenses56 20 477 60 
Interest expense, net2 1 4 3 
Income tax (benefit) expense(3)2 35 16 
NET EARNINGS (LOSS) FROM DISCONTINUED OPERATIONS ATTRIBUTABLE TO OWENS CORNING, NET OF TAX$1 $34 $(318)$84 
Major classes of assets and liabilities of discontinued operations include the following:
(In millions)
September 30, 2025December 31, 2024
ASSETS
CURRENT ASSETS
Cash and cash equivalents$57 $40 
Receivables, less allowance126 104 
Inventories218 260 
Other current assets23 23 
Current assets of discontinued operations424 427 
Property, plant and equipment, net414 346 
Goodwill100 98 
Deferred income taxes4 46 
Valuation allowance for discontinued operations(379)— 
Other non-current assets104 89 
Non-current assets of discontinued operations$243 $579 
LIABILITIES
CURRENT LIABILITIES
Accounts payable$109 $129 
Other current liabilities71 97 
Current liabilities of discontinued operations180 226 
Other liabilities106 95 
Non-current liabilities of discontinued operations$106 $95 
Cash flows related to discontinued operations are included within the Consolidated Statements of Cash Flows. Selected financial information related to cash flows from discontinued operations are below:

Nine Months Ended September 30,
(In millions)
20252024
Depreciation and amortization$— $72 
Cash paid for property, plant and equipment$64 $55 
v3.25.3
SEGMENT INFORMATION (Tables)
 9 Months Ended
Sep. 30, 2025
Segment Reporting [Abstract]  
Reconciliation of Revenue from Segments to Consolidated
The following tables show a disaggregation of our Net sales by segment and geographic region. Corporate eliminations (shown below) largely reflect intercompany sales between Insulation and Roofing. External customer sales are attributed to geographic region based upon the location from which the product is sold to the external customer.
Three Months Ended September 30, 2025
(In millions)RoofingInsulationDoorsSubtotalEliminationsConsolidated
Disaggregation Categories
North America Residential$1,070 $374 $482 $1,926 $(39)$1,887 
North America Non-Residential118 372 — 490 (2)488 
Total North America1,188 746 482 2,416 (41)2,375 
Europe50 193 59 302 (1)301 
Asia-Pacific2 — — 2 — 2 
Rest of world— 2 4 6 — 6 
NET SALES$1,240 $941 $545 $2,726 $(42)$2,684 
Three Months Ended September 30, 2024
(In millions)RoofingInsulationDoorsSubtotalEliminationsConsolidated
Disaggregation Categories
North America Residential$1,058 $406 $509 $1,973 $(37)$1,936 
North America Non-Residential116 382 — 498 (1)497 
Total North America1,174 788 509 2,471 (38)2,433 
Europe44 184 58 286 (1)285 
Asia-Pacific3 33 — 36 — 36 
Rest of world— 3 6 9 — 9 
NET SALES$1,221 $1,008 $573 $2,802 $(39)$2,763 
Nine Months Ended September 30, 2025
(In millions)RoofingInsulationDoorsSubtotalEliminationsConsolidated
Disaggregation Categories
North America Residential$3,166 $1,102 $1,450 $5,718 $(114)$5,604 
North America Non-Residential336 1,077 — 1,413 (7)1,406 
Total North America3,502 2,179 1,450 7,131 (121)7,010 
Europe153 539 173 865 (4)861 
Asia-Pacific8 56 3 67 — 67 
Rest of world— 10 13 23 — 23 
NET SALES$3,663 $2,784 $1,639 $8,086 $(125)$7,961 
Nine Months Ended September 30, 2024
(In millions)RoofingInsulationDoorsSubtotalEliminationsConsolidated
Disaggregation Categories
North America Residential$3,106 $1,187 $786 $5,079 $(107)$4,972 
North America Non-Residential314 1,100 — 1,414 (8)1,406 
Total North America3,420 2,287 786 6,493 (115)6,378 
Europe142 543 88 773 (2)771 
Asia-Pacific9 98 1 108 — 108 
Rest of world— 11 9 20 — 20 
NET SALES$3,571 $2,939 $884 $7,394 $(117)$7,277 
Schedule of Earnings before Interest and Taxes
The following table summarizes EBITDA by segment:

Three Months Ended September 30,Nine Months Ended
September 30,
(In millions)
2025202420252024
Reportable Segments
Roofing$423 $419 $1,212 $1,194 
Insulation212 248 662 717 
Doors56 89 199 150 
Total reportable segments691 756 2,073 2,061 
Restructuring excluding depreciation(7)— (19)(44)
Loss on sale of business(2)— (28)— 
Impairment of venture investment— (13)— (13)
Gains on sale of certain precious metals14 19 35 19 
Strategic review-related charges— (16)— (33)
Paroc marine recall— (1)(2)(8)
Acquisition-related transaction costs— (2)— (49)
Acquisition-related integration costs excluding amortization(9)(53)(15)(74)
Recognition of acquisition inventory fair value step-up— (6)— (18)
Goodwill impairment charge(780)— (780)— 
General Corporate expense and other(53)(51)(167)(163)
Total corporate, other and eliminations(837)(123)(976)(383)
Depreciation and amortization(182)(161)(513)(411)
Interest expense, net(65)(69)(192)(148)
(LOSS) EARNINGS FROM CONTINUING OPERATIONS BEFORE TAXES$(393)$403 $392 $1,119 
Reconciliation of Assets from Segment to Consolidated
The following table summarizes total assets by segment:
(In millions)September 30, 2025December 31, 2024
Assets allocated to reportable segments
Roofing$3,450 $3,107 
Insulation4,536 4,231 
Doors3,586 4,454 
Total assets allocated to reportable segments11,572 11,792 
Assets not allocated to reportable segments
Cash and cash equivalents286 321 
Non-current deferred income taxes8 8 
Investments in affiliates61 86 
Corporate property, plant and equipment, other assets and eliminations923 862 
TOTAL ASSETS FROM CONTINUING OPERATIONS$12,850 $13,069 
Schedule of Property, Plant and Equipment by Geographical Areas
The following table summarizes total property, plant and equipment, net by geographic region:
(In millions)September 30, 2025December 31, 2024
North America$3,286 $3,182 
Europe604 524 
Asia Pacific64 67 
Rest of world40 45 
PROPERTY, PLANT AND EQUIPMENT, NET FROM CONTINUING OPERATIONS$3,994 $3,818 
Schedule of Additions to Property, Plant and Equipment by Segment
The following table summarizes cash paid for property, plant and equipment by segment:
 Three Months Ended September 30,Nine Months Ended
September 30,
(In millions)2025202420252024
Reportable Segments
Roofing$46 $37 $174 $142 
Insulation65 56226 172 
Doors18 2559 40 
Total reportable segments$129 $118 $459 $354 
General corporate additions16 1244 41 
ADDITIONS TO PROPERTY, PLANT AND EQUIPMENT FROM CONTINUING OPERATIONS
$145 $130 $503 $395 
v3.25.3
INVENTORIES (Tables)
 9 Months Ended
Sep. 30, 2025
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current
Inventories consist of the following:
(In millions)September 30, 2025December 31, 2024
Finished goods$755 $664 
Materials and supplies668 663 
Total inventories$1,423 $1,327 
v3.25.3
DERIVATIVE FINANCIAL INSTRUMENTS (Tables)
 9 Months Ended
Sep. 30, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Derivative Assets and Liabilities at Fair Value
The following table presents the fair value of derivatives and hedging instruments and their respective location on the Consolidated Balance Sheets:
  Fair Value at
(In millions)LocationSeptember 30, 2025December 31, 2024
Derivative assets designated as hedging instruments:
Cash flow hedges:
Natural gas forward swaps for continuing operationsOther current assets$— $3 
Natural gas forward swaps for discontinued operationsOther current assets of discontinued operations$— $1 
Derivative liabilities designated as hedging instruments:
Cash flow hedges:
Natural gas forward swaps for continuing operationsOther current liabilities$3 $1 
Derivative assets not designated as hedging instruments:
Foreign exchange forward contracts for continuing operationsOther current assets$1 $— 
Foreign exchange forward contracts for discontinued operationsOther current assets of discontinued operations$— $1 
Derivative liabilities not designated as hedging instruments:
Foreign exchange forward contracts for continuing operationsOther current liabilities$1 $1 
Foreign exchange forward contracts for discontinued operationsOther current liabilities of discontinued operations$— $1 
Schedule of Fair Value Derivative Instruments Statements of Earnings Location
The following table presents the impact and respective location of derivative activities on the Consolidated Statements of Earnings:


Three Months Ended
September 30,		Nine Months Ended
September 30,
(In millions)Location2025202420252024
Derivative activity designated as hedging instruments:
Natural gas cash flow hedges:
Amount of loss reclassified from AOCI (as defined below) into earnings (a)Cost of sales$— $2 $— $11 
Amount of loss reclassified from AOCI (as defined below) into earnings (a)Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax$— $— $— $5 
Treasury interest rate lock:
Amount of loss (gain) reclassified from AOCI (as defined below) into earnings (a)Interest expense, net$— $1 $(2)$1 
Derivative activity not designated as hedging instruments:
Foreign currency:
Amount of loss (gain) recognized in earnings (b)
Other expense, net$2 $— $1 $(1)
Amount of loss (gain) recognized in earnings (c)
Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax$— $— $5 $(3)
(a)Accumulated Other Comprehensive Income (Deficit) (“AOCI”)
(b)(Gains)/losses related to foreign currency derivatives were substantially offset by net revaluation impacts on foreign currency denominated balance sheet exposures, which were also recorded in Other expense, net. Please refer to the “Other Derivatives” section below for additional detail.
(c)(Gains)/losses related to foreign currency derivatives were substantially offset by net revaluation impacts on foreign currency denominated balance sheet exposures, which were also recorded in Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax. Please refer to the “Other Derivatives” section below for additional detail.
Consolidated Statements of Comprehensive Earnings Activity
The following table presents the impact of derivative activities on the Consolidated Statements of Comprehensive Earnings:
Amount of Gain (Loss) Recognized in Comprehensive Earnings
(In millions)Three Months Ended
September 30,		Nine Months Ended
September 30,
Hedging TypeDerivative Financial Instrument2025202420252024
Cash flow hedgeNatural gas forward swaps$(1)$1 $(6)$14 
v3.25.3
GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)
 9 Months Ended
Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The changes in the net carrying value of goodwill by segment are as follows:
(In millions)RoofingInsulationDoorsTotal
Gross carrying amount at December 31, 2024
$654 $1,549 $1,478 $3,681 
Foreign currency translation7 67 11 85 
Purchase price allocation adjustments— — 23 23 
Gross carrying amount at September 30, 2025
661 1,616 1,512 3,789 
Accumulated impairment losses at December 31, 2024
— (936)— (936)
Impairment charge— — (780)(780)
Foreign currency translation— (44)— (44)
Accumulated impairment losses at September 30, 2025
— (980)(780)(1,760)
Balance, net of impairment, at September 30, 2025
$661 $636 $732 $2,029 
Schedule of Finite-Lived Intangible Assets
Other intangible assets consist of the following:
September 30, 2025December 31, 2024
(In millions)
Gross
Carrying
Amount
Accumulated
Amortization
Net
Carrying
Amount
Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Amount
Indefinite-lived trademarks and trade names$1,237 $— $1,237 $1,225 $— $1,225 
Amortizable intangible assets
Customer relationships1,547 (406)1,141 1,570 (367)1,203 
Technology386 (232)154 373 (199)174 
Trademarks and trade names 31 (6)25 31 (4)27 
Other (a)54 (2)52 52 (1)51 
Total other intangible assets$3,255 $(646)$2,609 $3,251 $(571)$2,680 
(a) Other primarily includes emissions rights.
Schedule of Impaired Intangible Assets
The following table presents the carrying values of these assets as of September 30, 2025:
(In millions)September 30, 2025
European building and technical insulation trade name
$96 
Doors trade name$195 
Finite-lived Intangible Assets Amortization Expense
The estimated amortization expense for intangible assets for the next five fiscal years ended December 31 is as follows:
(In millions)Amortization
2026$135 
2027$126 
2028$125 
2029$111 
2030$102 
v3.25.3
PROPERTY, PLANT AND EQUIPMENT (Tables)
 9 Months Ended
Sep. 30, 2025
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, plant and equipment consist of the following:
(In millions)September 30,
2025		December 31, 2024
Land$186 $178 
Buildings and leasehold improvements1,394 1,238 
Machinery and equipment5,318 4,876 
Construction in progress483 564 
Property, plant and equipment, gross7,381 6,856 
Accumulated depreciation(3,387)(3,038)
Property, plant and equipment, net$3,994 $3,818 
v3.25.3
ACQUISITIONS (Tables)
 9 Months Ended
Sep. 30, 2025
Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]  
Fair Value of Total Purchase Consideration Transferred
The fair value of the total purchase consideration transferred was determined as follows:
(In millions)Fair Value of Purchase Consideration
Closing cash consideration$2,935 
Pre-combination vesting portion of fair value of Masonite outstanding equity awards converted to Owens Corning time vesting RSUs35 
Repayment of Masonite term loan facility216 
Total transaction consideration$3,186 
Preliminary Estimated Fair Value Of Common Stock The fair value of Owens Corning common stock underlying Masonite outstanding equity awards that have been converted into awards with respect to Owens Corning common stock is calculated as follows:
(In millions, except share and per share amounts)
Amount
Number of Masonite stock awards outstanding (a)639,608 
Exchange ratio (b)0.7642
Owens Corning equity awards issued for Masonite outstanding equity awards488,778 
10-day weighted average closing share price of Owens Corning common stock (c)$174.03 
Fair value of Owens Corning time vesting RSUs issued for Masonite outstanding equity awards$85 
Less: Fair value allocated to post-transaction compensation expense(50)
Fair value of awards included in transaction consideration$35 
(a)    Represents the Masonite stock awards that converted into Owens Corning equity awards upon completion of the acquisition of Masonite, based on awards outstanding at May 15, 2024. Masonite equity awards include awards issued under various stock incentive plans of Masonite.
(b)    The exchange rate was determined by the consideration amount divided by the volume weighted average closing sale price of one share of Owens Corning common stock for the ten consecutive trading days ended May 15, 2024, in accordance with the terms of the Arrangement Agreement.
(c)    The ten-day weighted average closing share price was calculated for the ten consecutive trading days ended May 15, 2024, in accordance with the terms of the Arrangement Agreement.
Preliminary Acquisition Date Fair Value of Net Intangible Assets Acquired, Net Of Liabilities Assumed
The following table summarizes the acquisition date fair value net of measurement period adjustments of net tangible and intangible assets acquired, net of liabilities assumed as part of the Arrangement:
(In millions)As originally reportedMeasurement period adjustmentsAs adjusted
Cash and cash equivalents$282 $— $282 
Receivables, net330 — 330 
Inventories379 (2)377 
Other current assets82 (4)78 
Property, plant and equipment, net861 (3)858 
Operating lease right-of-use assets253 — 253 
Intangible assets1,579 (221)1,358 
Deferred income taxes14 — 14 
Other non-current assets91 — 91 
Total assets3,871 (230)3,641 
Accounts payable196 — 196 
Current operating lease liabilities28 — 28 
Other current liabilities187 6 193 
Long-term debt867 — 867 
Non-current operating lease liabilities235 — 235 
Deferred income taxes413 (43)370 
Other non-current liabilities32 13 45 
Net assets acquired1,913 (206)1,707 
Non-controlling interest(35)— (35)
Goodwill1,308 206 1,514 
Total net assets acquired$3,186 $— $3,186 
(In millions, except useful life amounts)Estimated
Useful Life
(in years)		Estimated
Asset
Fair Value
Customer relationships
10 - 21
$979 
Technology
5
120 
Trademarks and trade names (indefinite-lived)Indefinite240 
Trademarks and trade names
10
19 
Identifiable intangible assets, net$1,358 
Pro Forma Financial Information
The following table summarizes, on an unaudited pro forma basis, the combined results of operations from continuing operations of the Company for the nine months ended September 30, 2024, assuming the acquisition had occurred on January 1, 2023.
Nine Months Ended September 30,
(In millions)2024
Pro Forma net sales from continuing operations$8,177 
Pro Forma net earnings from continuing operations attributable to Owens Corning$927 
v3.25.3
WARRANTIES (Tables)
 9 Months Ended
Sep. 30, 2025
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Liability A reconciliation of the warranty liability is as follows:

Nine Months Ended September 30,
(In millions)20252024
Beginning balance$99 $97 
Amounts accrued for current year20 15 
Acquired obligations— 4 
Settlements of warranty claims(24)(17)
Ending balance$95 $99 
v3.25.3
RESTRUCTURING (Tables)
 9 Months Ended
Sep. 30, 2025
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Costs on the Consolidated Statements of Earnings
The following table presents the impact and respective location of total restructuring on the Consolidated Statements of Earnings From Continuing Operations, which are included within Corporate, Other and Eliminations:

Three Months Ended September 30,Nine Months Ended September 30,
(In millions)Location2025202420252024
Accelerated depreciationCost of sales$(16)$(1)$(25)$(8)
Other exit costsCost of sales(6)(1)(7)(6)
Other exit costsMarketing and administrative expenses— — (1)(1)
SeveranceOther expense, net(1)1 (10)(47)
Other exit costsOther expense, net— — (1)— 
Total restructuring costs$(23)$(1)$(44)$(62)
Schedule of Restructuring Reserve by Type of Cost
The following table summarizes the status of the unpaid liabilities from the Company’s restructuring activities:
September 30, 2025
(In millions)Roofing Integration RestructuringAcquisition-related RestructuringBuilding Materials Business SaleGlobal Composites RestructuringProtective Packaging ExitWabash Facility ClosureEuropean Operating Structure Optimization
Balance at December 31, 2024$— $3 $6 $14 $— $— $5 
Restructuring costs7 37 (2)5 — — (3)
Payments— (10)(3)(7)— — (2)
Accelerated depreciation and other non-cash items(6)(24)— — — — — 
Balance at September 30, 2025$1 $6 $1 $12 $— $— $— 
Cumulative charges incurred$7 $109 $3 $43 $83 $33 $12 
As of September 30, 2025, the remaining liability balance was comprised of $20 million related to severance, which the Company expects to pay over the next twelve months.
September 30, 2024
(In millions)Acquisition-related RestructuringGlobal Composites RestructuringProtective Packaging ExitWabash Facility ClosureEuropean Operating Structure Optimization
Balance at December 31, 2023$— $12 $1 $3 $6 
Restructuring costs45 10 4 — 3 
Payments(21)(4)(3)(3)(4)
Accelerated depreciation and other non-cash items(23)(8)(2)— — 
Balance at September 30, 2024$1 $10 $— $— $5 
Cumulative charges incurred$45 $26 $82 $33 $15 
v3.25.3
DEBT (Tables)
 9 Months Ended
Sep. 30, 2025
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments
Details of the Company’s outstanding long-term debt, as well as the fair values, are as follows:
September 30, 2025December 31, 2024
(In millions)Carrying ValueFair ValueCarrying ValueFair Value
3.400% senior notes, net of discount and financing fees, due 2026
$399 99 %$399 98 %
5.500% senior notes, net of discount and financing fees, due 2027
498 102 %497 102 %
5.375% senior notes, net of discount and financing fees, due 2028
— — %29 99 %
3.950% senior notes, net of discount and financing fees, due 2029
448 99 %447 95 %
3.500% senior notes, net of discount and financing fees, due 2030
2 90 %2 89 %
3.500% senior notes, net of discount and financing fees, due 2030
342 97 %338 93 %
3.875% senior notes, net of discount and financing fees, due 2030
298 98 %298 94 %
5.700% senior notes, net of discount and financing fees, due 2034
791 105 %790 102 %
7.000% senior notes, net of discount and financing fees, due 2036
369 115 %369 112 %
4.300% senior notes, net of discount and financing fees, due 2047
590 83 %589 80 %
4.400% senior notes, net of discount and financing fees, due 2048
391 83 %391 80 %
5.950% senior notes, net of discount and financing fees, due 2054
683 103 %683 99 %
Various finance leases, due through 2050 (a)
303 100 %267 100 %
Total long-term debt5,114 N/A5,099 N/A
Less – current portion of senior notes399 99 %— — %
Less – current portion of finance leases and other (a)37 100 %32 100 %
Long-term debt, net of current portion$4,678 N/A$5,067 N/A
(a)The Company determined that the book value of the above noted long-term debt instruments approximates fair value.
v3.25.3
STOCK COMPENSATION (Tables)
 9 Months Ended
Sep. 30, 2025
Share-Based Payment Arrangement [Abstract]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award
Stock-based compensation expense included in both Marketing and administrative expenses and Net earnings/(loss) from discontinued operations attributable to Owens Corning, net of tax in the accompanying Consolidated Statements of Earnings is as follows:
Three Months Ended
September 30,		Nine Months Ended
September 30,
(In millions)2025202420252024
Total stock-based compensation expense from continuing operations$14 $20 $50 $70 
Total stock-based compensation expense from discontinued operations1 1 4 4 
Total stock-based compensation expense$15 $21 $54 $74 
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity
The following table summarizes the Company’s RSU activity:

Number of RSUsWeighted-Average
Fair Value
Balance at December 31, 20241,249,146 $107.31 
Granted305,753 170.89 
Vested(432,800)112.39 
Forfeited(75,903)141.76 
Balance at September 30, 20251,046,196 $121.28 
Share-Based Payment Arrangement, Performance Shares, Activity
The following table provides a summary of the grant date fair values of the internal Company-based metric PSUs:
Nine Months Ended September 30,
20252024
Grant date fair value of units granted$171.94 $147.18 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The following table provides a summary of the assumptions for PSUs granted in 2025 and 2024:
Nine Months Ended September 30,
20252024
Expected volatility32.78%33.88%
Risk free interest rate4.14%3.94%
Expected term (in years)2.902.91
Grant date fair value of units granted$221.54$195.95
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest
The following table summarizes the Company’s PSU activity:

Number of PSUsWeighted-Average
Grant Date
Fair Value
Balance at December 31, 2024219,075 $117.23 
Granted120,321 188.47 
Vested— — 
Forfeited(55,338)155.49 
Balance at September 30, 2025284,058 $147.55 
v3.25.3
EARNINGS PER SHARE (Tables)
 9 Months Ended
Sep. 30, 2025
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table is a reconciliation of weighted-average shares for calculating basic and diluted earnings per share:

Three Months Ended
September 30,		Nine Months Ended
September 30,
(In millions, except per share amounts)
2025202420252024
Net (loss) earnings from continuing operations attributable to Owens Corning
$(495)$287 $94 $821 
Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax1 34 (318)84 
NET (LOSS) EARNINGS ATTRIBUTABLE TO OWENS CORNING
$(494)$321 $(224)$905 
Weighted-average number of shares outstanding used for basic earnings per share83.4 87.0 84.7 87.2 
Unvested restricted stock units and performance share units— 0.9 0.6 0.8 
Weighted-average number of shares outstanding and common equivalent shares used for diluted earnings per share83.4 87.9 85.3 88.0 
(Loss) Earnings per common share attributable to Owens Corning common stockholders:
Basic - continuing operations$(5.93)$3.30 $1.11 $9.42 
Basic - discontinued operations$0.01 $0.39 $(3.75)$0.96 
Basic$(5.92)$3.69 $(2.64)$10.38 
Diluted - continuing operations$(5.93)$3.26 $1.10 $9.33 
Diluted - discontinued operations$0.01 $0.39 $(3.73)$0.95 
Diluted$(5.92)$3.65 $(2.63)$10.28 
v3.25.3
INCOME TAXES (Tables)
 9 Months Ended
Sep. 30, 2025
Income Tax Disclosure [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation
The following table provides the Income tax expense and effective tax rate for the periods indicated:

Three Months Ended September 30,Nine Months Ended September 30,
(In millions, except effective tax rate)
2025202420252024
Income tax expense$102 $118 $300 $302 
Effective tax rate-26 %29 %77 %27 %
v3.25.3
CHANGES IN ACCUMULATED OTHER COMPREHENSIVE DEFICIT (Tables)
 9 Months Ended
Sep. 30, 2025
Equity [Abstract]  
Components of Accumulated Other Comprehensive Income (Loss)
The following table summarizes the changes in accumulated other comprehensive income (deficit):
Three Months Ended
September 30,		Nine Months Ended
September 30,

(In millions)
2025202420252024
Currency Translation Adjustment
Beginning balance$(280)$(421)$(534)$(318)
(Loss) gain on foreign currency translation(5)69 249 (34)
Other comprehensive (loss) income, net of tax(5)69 249 (34)
Ending balance$(285)$(352)$(285)$(352)
Pension and Other Postretirement Adjustment
Beginning balance$(189)$(197)$(181)$(196)
Amounts reclassified from AOCI to net earnings, net of tax (a)— — (1)(1)
Amounts classified into AOCI, net of tax1 (4)(6)(4)
Other comprehensive income (loss), net of tax1 (4)(7)(5)
Ending balance$(188)$(201)$(188)$(201)
Hedging Adjustment
Beginning balance$19 $21 $24 $11 
Amounts reclassified from AOCI to net earnings, net of tax (b)— 2 (2)12 
Amounts classified into AOCI, net of tax(1)(1)(4)(1)
Other comprehensive (loss) income, net of tax(1)1 (6)11 
Ending balance$18 $22 $18 $22 
Total AOCI ending balance$(455)$(531)$(455)$(531)
(a)These AOCI components are included in the computation of total Pension and Other postretirement expense and are recorded in Non-operating expense (income).
(b)Amounts reclassified from (loss) gain on cash flow hedges are reclassified from AOCI to income when the hedged item affects earnings and is recognized in Cost of sales or Interest expense, net depending on the hedged item. See Note 5 for additional information.
v3.25.3
GENERAL (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
May 15, 2024
Feb. 08, 2024
Dec. 31, 2023
Related Party Transaction [Line Items]                
Contract liability $ 130 $ 115 $ 130 $ 115 $ 118     $ 101
Contract liability, revenue recognized     21 19        
Restricted cash 8   8   8      
Related party transaction, expenses 19 $ 20 68 85        
Outstanding supplier finance programs 203   203   234      
Invoices paid     459 $ 405        
Related Party                
Related Party Transaction [Line Items]                
Due to related party supplier $ 3   $ 3   $ 3      
First Customer | Accounts Receivable | Customer Concentration Risk                
Related Party Transaction [Line Items]                
Concentration risk percentage     23.00%          
Second Customer | Accounts Receivable | Customer Concentration Risk                
Related Party Transaction [Line Items]                
Concentration risk percentage     20.00%          
Masonite                
Related Party Transaction [Line Items]                
Purchase price (in dollars per share)           $ 133.00 $ 133.00  
v3.25.3
DISCONTINUED OPERATIONS - Narrative (Details)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Feb. 13, 2025
USD ($)
Mar. 31, 2025
segment
Sep. 30, 2025
USD ($)
segment
Dec. 31, 2024
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Tangible Asset Impairment Charges       $ 483
Number of reportable segments | segment   3 3  
Property, Plant and Equipment        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Tangible Asset Impairment Charges       439
Operating Lease, Right-Of-Use Asset        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Tangible Asset Impairment Charges       30
Finite-Lived Intangible Assets        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Tangible Asset Impairment Charges       14
Discontinued Operations, Disposed of by Sale        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Disposal Group, Including Discontinued Operation, Consideration $ 436   $ 498  
Noncash or Part Noncash Divestiture, Amount of Consideration Received $ 225      
Disposal Group, Including Discontinued Operation, Goodwill     $ 100 $ 98
v3.25.3
DISCONTINUED OPERATIONS - Net Earnings (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
NET EARNINGS (LOSS) FROM DISCONTINUED OPERATIONS ATTRIBUTABLE TO OWENS CORNING, NET OF TAX $ 1 $ 34 $ (318) $ 84
Discontinued Operations, Disposed of by Sale        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
NET SALES 301 283 877 858
COST OF SALES 245 226 679 695
Marketing and administrative expenses 18 21 53 63
Loss from classification as discontinued operation 28 0 409 0
Other expense, net 10 (1) 15 (3)
Total operating expenses 56 20 477 60
Interest expense, net 2 1 4 3
Income tax expense (3) 2 35 16
NET EARNINGS (LOSS) FROM DISCONTINUED OPERATIONS ATTRIBUTABLE TO OWENS CORNING, NET OF TAX $ 1 $ 34 $ (318) $ 84
v3.25.3
DISCONTINUED OPERATIONS - Major Classes of Assets and Liabilities (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Current assets of discontinued operations $ 424 $ 427
Non-current assets of discontinued operations 243 579
Current liabilities of discontinued operations 180 226
Non-current liabilities of discontinued operations 106 95
Discontinued Operations, Disposed of by Sale    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents 57 40
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net 126 104
Disposal Group, Including Discontinued Operation, Inventory 218 260
Current assets of discontinued operations 23 23
Current assets of discontinued operations 424 427
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment 414 346
Disposal Group, Including Discontinued Operation, Goodwill 100 98
Disposal Group, Including Discontinued Operation, Deferred Tax Assets 4 46
Non-current assets of discontinued operations 104 89
Non-current assets of discontinued operations 243 579
Disposal Group, Including Discontinued Operation, Accounts Payable 109 129
Disposal Group, Including Discontinued Operation, Provision For Loss on Discontinued Operations (379) 0
Disposal Group, Including Discontinued Operation, Other Liabilities, Current 71 97
Current liabilities of discontinued operations 180 226
Disposal Group, Including Discontinued Operation, Other Liabilities 106 95
Non-current liabilities of discontinued operations $ 106 $ 95
v3.25.3
DISCONTINUED OPERATIONS - Cash Flows (Details) - Discontinued Operations, Disposed of by Sale - USD ($)
$ in Millions
 3 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Disposal Group, Including Discontinued Operation, Depreciation and Amortization $ 0 $ 72
Disposal Group, Including Discontinued Operation, Payments to Acquire Productive Assets $ 64 $ 55
v3.25.3
SEGMENT INFORMATION (Details)
$ in Millions
 2 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
Mar. 31, 2025
segment
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
segment
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Segment Reporting, Significant Reconciling Item [Line Items]              
Number of reportable segments | segment     3   3    
Disaggregated revenue   $ 2,684   $ 2,763 $ 7,961 $ 7,277  
(LOSS) EARNINGS FROM CONTINUING OPERATIONS BEFORE INTEREST AND TAXES   (328)   472 584 1,267  
Depreciation and amortization   (182)   (161) (513) (411)  
Restructuring excluding depreciation   7   0 19 44  
Gains on sale of certain precious metals   14   19 35 19  
Paroc marine recall   0   (1) (2) (8)  
Strategic review-related charges   0   16 0 33  
Gain (Loss) on Disposition of Business   (2)   0 (28) 0 $ (91)
Impairment Loss, Joint Venture   0   (13) 0 (13)  
Recognition of acquisition inventory fair value step-up   0   6 0 18  
Goodwill impairment charge   (780)   0 (780) 0  
General Corporate expense and other   53   51 167 163  
Interest Expense, Operating and Nonoperating   (65)   (69) (192) (148)  
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest   (393)   403 392 1,119  
Acquisition-Related Costs, Transaction              
Segment Reporting, Significant Reconciling Item [Line Items]              
Acquisition related costs   0   2 0 49  
Acquisition-Related Costs, Integration [Member]              
Segment Reporting, Significant Reconciling Item [Line Items]              
Acquisition related costs   9   53 15 74  
Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   2,726   2,802 8,086 7,394  
Eliminations              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   (42)   (39) (125) (117)  
(LOSS) EARNINGS FROM CONTINUING OPERATIONS BEFORE INTEREST AND TAXES   (837)   (123) (976) (383)  
Europe              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   301   285 861 771  
Europe | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   302   286 865 773  
Europe | Eliminations              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   (1)   (1) (4) (2)  
Asia Pacific              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   2   36 67 108  
Asia Pacific | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   2   36 67 108  
Asia Pacific | Eliminations              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   0   0 0 0  
Rest of world              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   6   9 23 20  
Rest of world | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   6   9 23 20  
Rest of world | Eliminations              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   0   0 0 0  
North America              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   2,375   2,433 7,010 6,378  
North America | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   2,416   2,471 7,131 6,493  
North America | Eliminations              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   (41)   (38) (121) (115)  
North America | Residential              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   1,887   1,936 5,604 4,972  
North America | Residential | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   1,926   1,973 5,718 5,079  
North America | Residential | Eliminations              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   (39)   (37) (114) (107)  
North America | Commercial and Industrial Sector              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   488   497 1,406 1,406  
North America | Commercial and Industrial Sector | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   490   498 1,413 1,414  
North America | Commercial and Industrial Sector | Eliminations              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   (2)   (1) (7) (8)  
Roofing | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   1,240   1,221 3,663 3,571  
(LOSS) EARNINGS FROM CONTINUING OPERATIONS BEFORE INTEREST AND TAXES   423   419 1,212 1,194  
Roofing | Europe | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   50   44 153 142  
Roofing | Asia Pacific | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   2   3 8 9  
Roofing | Rest of world | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   0   0 0 0  
Roofing | North America | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   1,188   1,174 3,502 3,420  
Roofing | North America | Residential | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   1,070   1,058 3,166 3,106  
Roofing | North America | Commercial and Industrial Sector | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   118   116 336 314  
Insulation | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   941   1,008 2,784 2,939  
(LOSS) EARNINGS FROM CONTINUING OPERATIONS BEFORE INTEREST AND TAXES   212   248 662 717  
Insulation | Europe | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   193   184 539 543  
Insulation | Asia Pacific | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   0   33 56 98  
Insulation | Rest of world | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   2   3 10 11  
Insulation | North America | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   746   788 2,179 2,287  
Insulation | North America | Residential | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   374   406 1,102 1,187  
Insulation | North America | Commercial and Industrial Sector | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   372   382 1,077 1,100  
Doors | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue $ 573 545     1,639 884  
(LOSS) EARNINGS FROM CONTINUING OPERATIONS BEFORE INTEREST AND TAXES   56   89 199 150  
Doors | Europe | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   59   58 173 88  
Doors | Asia Pacific | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   0   0 3 1  
Doors | Rest of world | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   4   6 13 9  
Doors | North America | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   482   509 1,450 786  
Doors | North America | Residential | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   482   509 1,450 786  
Doors | North America | Commercial and Industrial Sector | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
Disaggregated revenue   0   0 0 0  
Total Segments | Operating Segments              
Segment Reporting, Significant Reconciling Item [Line Items]              
(LOSS) EARNINGS FROM CONTINUING OPERATIONS BEFORE INTEREST AND TAXES   $ 691   $ 756 $ 2,073 $ 2,061  
v3.25.3
SEGMENT INFORMATION - Total Assets and Property, Plant and Equipment by Geographic Region (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Segment Reporting Information [Line Items]    
Total Assets $ 13,517 $ 14,075
Cash and cash equivalents 286 321
Noncurrent deferred income taxes 8 8
Property, plant and equipment, net 3,994 3,818
Continuing Operations    
Segment Reporting Information [Line Items]    
Total Assets 12,850 13,069
Cash Equivalents, at Carrying Value 286 321
Noncurrent deferred income taxes 8 8
Investments in affiliates 61 86
Corporate property, plant and equipment, net 923 862
Property, plant and equipment, net 3,994 3,818
Roofing | Operating Segments | Continuing Operations    
Segment Reporting Information [Line Items]    
Total Assets 3,450 3,107
Insulation | Operating Segments | Continuing Operations    
Segment Reporting Information [Line Items]    
Total Assets 4,536 4,231
Doors | Operating Segments | Continuing Operations    
Segment Reporting Information [Line Items]    
Total Assets 3,586 4,454
Total Segments | Operating Segments | Continuing Operations    
Segment Reporting Information [Line Items]    
Total Assets 11,572 11,792
North America | Continuing Operations    
Segment Reporting Information [Line Items]    
Property, plant and equipment, net 3,286 3,182
Europe | Continuing Operations    
Segment Reporting Information [Line Items]    
Property, plant and equipment, net 604 524
Asia Pacific    
Segment Reporting Information [Line Items]    
Property, plant and equipment, net   67
Asia Pacific | Continuing Operations    
Segment Reporting Information [Line Items]    
Property, plant and equipment, net 64  
Other Geographical | Continuing Operations    
Segment Reporting Information [Line Items]    
Property, plant and equipment, net $ 40 $ 45
v3.25.3
SEGMENT INFORMATION - Additions to Property, Plant and Equipment (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Segment Reporting Information [Line Items]        
Property, plant and equipment, additions $ 145 $ 130 $ 503 $ 395
Segment Reporting, Reconciling Item, Corporate Nonsegment        
Segment Reporting Information [Line Items]        
Property, plant and equipment, additions 16 12 44 41
Insulation | Operating Segments        
Segment Reporting Information [Line Items]        
Property, plant and equipment, additions 65 56 226 172
Roofing | Operating Segments        
Segment Reporting Information [Line Items]        
Property, plant and equipment, additions 46 37 174 142
Total Segments | Operating Segments        
Segment Reporting Information [Line Items]        
Property, plant and equipment, additions 129 118 459 354
Doors | Operating Segments        
Segment Reporting Information [Line Items]        
Property, plant and equipment, additions $ 18 $ 25 $ 59 $ 40
v3.25.3
INVENTORIES (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Inventory Disclosure [Abstract]    
Finished goods $ 755 $ 664
Materials and supplies 668 663
Total inventories $ 1,423 $ 1,327
v3.25.3
DERIVATIVE FINANCIAL INSTRUMENTS - Balance Sheet (Details) - USD ($)
$ in Millions
 1 Months Ended
May 31, 2024
Dec. 31, 2022
Sep. 30, 2025
Dec. 31, 2024
Treasury interest rate lock        
Derivatives, Fair Value [Line Items]        
Amortized portion part of interest expense for future issuance of debt $ 31 $ 31    
Designated as Hedging Instrument | Cash Flow Hedging | Energy Related Derivative | Continuing Operations        
Derivatives, Fair Value [Line Items]        
Derivative asset, fair value     $ 0 $ 3
Derivative liability, fair value     3 1
Designated as Hedging Instrument | Cash Flow Hedging | Energy Related Derivative | Discontinued Operations        
Derivatives, Fair Value [Line Items]        
Derivative asset, fair value     0 1
Nondesignated as Hedging Instrument | Foreign Exchange Contract | Continuing Operations        
Derivatives, Fair Value [Line Items]        
Derivative asset, fair value     1 0
Derivative liability, fair value     1 1
Nondesignated as Hedging Instrument | Foreign Exchange Contract | Discontinued Operations        
Derivatives, Fair Value [Line Items]        
Derivative asset, fair value     0 1
Derivative liability, fair value     $ 0 $ 1
v3.25.3
DERIVATIVE FINANCIAL INSTRUMENTS - Income Statement (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Energy Related Derivative | Cash Flow Hedging        
Derivative Instruments Gain Loss [Line Items]        
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net $ 1 $ (1) $ 6 $ (14)
Designated as Hedging Instrument | Energy Related Derivative | Cost of sales        
Derivative Instruments Gain Loss [Line Items]        
Amount of gain (loss) reclassified from AOCI (as defined below) into earnings 0 (2) 0 (11)
Designated as Hedging Instrument | Energy Related Derivative | Discontinued Operations        
Derivative Instruments Gain Loss [Line Items]        
Amount of gain (loss) reclassified from AOCI (as defined below) into earnings 0 0 0 (5)
Nondesignated as Hedging Instrument | Foreign Exchange Contract | Other expense, net        
Derivative Instruments Gain Loss [Line Items]        
Amount of loss (gain) recognized in earnings 2 0 1 (1)
Nondesignated as Hedging Instrument | Foreign Exchange Contract | Discontinued Operations        
Derivative Instruments Gain Loss [Line Items]        
Amount of loss (gain) recognized in earnings 0 0 5 (3)
Nondesignated as Hedging Instrument | Treasury interest rate lock        
Derivative Instruments Gain Loss [Line Items]        
Amount of gain (loss) reclassified from AOCI (as defined below) into earnings $ 0 $ 1 $ (2) $ 1
v3.25.3
DERIVATIVE FINANCIAL INSTRUMENTS - Cash Flow (Details)
MMBTU in Millions, $ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
May 31, 2024
USD ($)
Dec. 31, 2022
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2025
USD ($)
MMBTU
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
MMBTU
Sep. 30, 2024
USD ($)
Dec. 31, 2020
USD ($)
Derivative [Line Items]                
Recognized gain           $ 2    
Unrecognized gain included in AOCI           $ 27    
5.700% senior notes, net of discount and financing fees, due 2034                
Derivative [Line Items]                
Long-term debt, percentage rate 5.70%     5.70%   5.70%    
Energy Related Derivative | Cash Flow Hedging                
Derivative [Line Items]                
Derivative, nonmonetary notional amount | MMBTU       6   6    
Unrealized Gain (Loss) on Derivatives           $ (3)    
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred           (3)    
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net       $ 1 $ (1) 6 $ (14)  
Treasury interest rate lock                
Derivative [Line Items]                
Derivative, notional amount               $ 175
Term of derivatives (in years)               10 years
Derivative, fixed interest rate               0.994%
Cash received upon settlement   $ 37            
Amortized portion part of interest expense for future issuance of debt $ 31 $ 31            
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net     $ 6          
Euro Member Countries, Euro | Foreign exchange forward contracts                
Derivative [Line Items]                
Derivative, notional amount       143   143    
U.S. | Foreign exchange forward contracts                
Derivative [Line Items]                
Derivative, notional amount       $ 190   $ 190    
v3.25.3
GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
intangible_asset
Mar. 31, 2025
USD ($)
segment
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
intangible_asset
segment
Sep. 30, 2024
USD ($)
Jun. 30, 2025
Dec. 31, 2024
USD ($)
Finite-Lived Intangible Assets [Line Items]              
Number of reportable segments | segment   3   3      
Number of indefinite-lived intangible assets are increased risk of impairment | intangible_asset 2     2      
Amortization expense for intangible assets $ 37   $ 42 $ 114 $ 97    
Amortization expense for intangible assets for remainder of the year 34     34      
Goodwill, Allocated, Amount   $ 325          
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount           5.00%  
Impairment charge       780      
Goodwill 2,029     2,029     $ 2,745
Insulation              
Finite-Lived Intangible Assets [Line Items]              
Impairment charge       0      
Goodwill 636     636      
Doors              
Finite-Lived Intangible Assets [Line Items]              
Impairment charge       780      
Goodwill $ 732     $ 732      
Maximum              
Finite-Lived Intangible Assets [Line Items]              
Weighted average useful life (in years) 25 years     25 years      
v3.25.3
GOODWILL AND OTHER INTANGIBLE ASSETS - Goodwill Rollforward (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Goodwill [Roll Forward]    
Balance at beginning of period, gross carrying amount $ 3,681  
Foreign currency translation 85  
Goodwill, Measurement Period Adjustment 23  
Balance at end of period, gross carrying amount 3,789  
Goodwill, Impaired, Accumulated Impairment [Roll Forward]    
Balance at beginning of period, accumulated impairment loss (936)  
Impairment charge (780)  
Foreign currency translation (44)  
Balance at end of period, accumulated impairment loss (1,760)  
Goodwill, net 2,029 $ 2,745
Roofing    
Goodwill [Roll Forward]    
Balance at beginning of period, gross carrying amount 654  
Foreign currency translation 7  
Goodwill, Measurement Period Adjustment 0  
Balance at end of period, gross carrying amount 661  
Goodwill, Impaired, Accumulated Impairment [Roll Forward]    
Balance at beginning of period, accumulated impairment loss 0  
Impairment charge 0  
Foreign currency translation 0  
Balance at end of period, accumulated impairment loss 0  
Goodwill, net 661  
Insulation    
Goodwill [Roll Forward]    
Balance at beginning of period, gross carrying amount 1,549  
Foreign currency translation 67  
Goodwill, Measurement Period Adjustment 0  
Balance at end of period, gross carrying amount 1,616  
Goodwill, Impaired, Accumulated Impairment [Roll Forward]    
Balance at beginning of period, accumulated impairment loss (936)  
Impairment charge 0  
Foreign currency translation (44)  
Balance at end of period, accumulated impairment loss (980)  
Goodwill, net 636  
Doors    
Goodwill [Roll Forward]    
Balance at beginning of period, gross carrying amount 1,478  
Foreign currency translation 11  
Goodwill, Measurement Period Adjustment 23  
Balance at end of period, gross carrying amount 1,512  
Goodwill, Impaired, Accumulated Impairment [Roll Forward]    
Balance at beginning of period, accumulated impairment loss 0  
Impairment charge (780)  
Foreign currency translation 0  
Balance at end of period, accumulated impairment loss (780)  
Goodwill, net $ 732  
v3.25.3
GOODWILL AND OTHER INTANGIBLE ASSETS - Intangible Assets Rollforward (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]    
Accumulated Amortization $ (646) $ (571)
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
Amount 3,255 3,251
Accumulated Amortization (646) (571)
Net Carrying Amount 2,609 2,680
Trademarks and trade names    
Intangible Asset, Acquired, Indefinite-Lived [Line Items]    
Indefinite-lived trademarks and trade names 1,237 1,225
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 1,547 1,570
Accumulated Amortization (406) (367)
Net Carrying Amount 1,141 1,203
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
Accumulated Amortization (406) (367)
Technology    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 386 373
Accumulated Amortization (232) (199)
Net Carrying Amount 154 174
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
Accumulated Amortization (232) (199)
Trademarks and trade names    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 31 31
Accumulated Amortization (6) (4)
Net Carrying Amount 25 27
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
Accumulated Amortization (6) (4)
Other    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 54 52
Accumulated Amortization (2) (1)
Net Carrying Amount 52 51
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
Accumulated Amortization $ (2) $ (1)
v3.25.3
GOODWILL AND OTHER INTANGIBLE ASSETS - Impaired Intangible Assets (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Schedule Of Intangible Assets By Major Class [Line Items]    
Intangible assets, net $ 2,609 $ 2,680
European building and technical insulation trade name    
Schedule Of Intangible Assets By Major Class [Line Items]    
Intangible assets, net 96  
Doors trade name    
Schedule Of Intangible Assets By Major Class [Line Items]    
Intangible assets, net $ 195  
v3.25.3
GOODWILL AND OTHER INTANGIBLE ASSETS - Amortization Expense (Details)
$ in Millions
Sep. 30, 2025
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2026 $ 135
2027 126
2028 125
2029 111
2030 $ 102
v3.25.3
PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Property Plant And Equipment [Line Items]          
Property plant and equipment, gross $ 7,381   $ 7,381   $ 6,856
Accumulated depreciation (3,387)   (3,387)   (3,038)
Property, plant and equipment, net $ 3,994   $ 3,994   $ 3,818
Precious metals depletion percentage 4.00%   4.00%   4.00%
Gains on sale of certain precious metals $ 14 $ 19 $ 35 $ 19  
Discontinued Operations, Disposed of by Sale          
Property Plant And Equipment [Line Items]          
Gains on sale of certain precious metals 0   10    
Other Nonoperating Income (Expense)          
Property Plant And Equipment [Line Items]          
Increase to property, plant and equipment 14   25    
Gains on exchange of certain precious metals 14   25    
Land          
Property Plant And Equipment [Line Items]          
Property plant and equipment, gross 186   186   $ 178
Buildings and leasehold improvements          
Property Plant And Equipment [Line Items]          
Property plant and equipment, gross 1,394   1,394   1,238
Machinery and equipment          
Property Plant And Equipment [Line Items]          
Property plant and equipment, gross 5,318   5,318   4,876
Construction in progress          
Property Plant And Equipment [Line Items]          
Property plant and equipment, gross $ 483   $ 483   $ 564
v3.25.3
ACQUISITIONS - Narrative (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 2 Months Ended 3 Months Ended 9 Months Ended
May 15, 2024
Jun. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
May 13, 2024
Apr. 15, 2024
Feb. 08, 2024
Business Combination [Line Items]                    
Common stock, outstanding (in shares)             85,400      
Goodwill     $ 2,029   $ 2,029   $ 2,745      
Net sales     (2,684) $ (2,763) (7,961) $ (7,277)        
Increase (decrease) in net earnings     (494) 321 (225) 905        
Acquisition-Related Costs, Transaction                    
Business Combination [Line Items]                    
Acquisition related costs     0 (2) 0 (49)        
Acquisition-Related Costs, Integration [Member]                    
Business Combination [Line Items]                    
Acquisition related costs     $ (9) $ (53) $ (15) $ (74)        
5.375% senior notes, net of discount and financing fees, due 2028                    
Business Combination [Line Items]                    
Long-term debt, percentage rate     5.375%   5.375%          
Masonite                    
Business Combination [Line Items]                    
Purchase price (in dollars per share) $ 133.00                 $ 133.00
Percentage of voting rights to be acquired 100.00%                  
Business combination, consideration transferred $ 3,186                  
Debt proceeds $ 2,800                  
Net earnings   $ 54     $ 14          
Price per share (in dollars per share) $ 133.00                  
Goodwill $ 1,514                  
Receivables, net 330                  
Gross accounts receivable 331                  
Uncollectible accounts receivable 1                  
Fair value of inventory stepped up 18                  
Property, plant and equipment, net 858                  
Intangible assets 1,358                  
Masonite | Measurement period adjustments                    
Business Combination [Line Items]                    
Goodwill 206                  
Receivables, net 0                  
Property, plant and equipment, net (3)                  
Intangible assets $ (221)                  
Masonite | Dominance Industries, Inc.                    
Business Combination [Line Items]                    
Percentage of voting rights to be acquired 45.00%                  
Masonite | Vanair Design Inc.                    
Business Combination [Line Items]                    
Percentage of voting rights to be acquired 30.00%                  
Masonite | Sacopan Inc.                    
Business Combination [Line Items]                    
Percentage of voting rights to be acquired 25.00%                  
Masonite | Magna Foremost SDN BHD                    
Business Combination [Line Items]                    
Percentage of voting rights to be acquired 50.00%                  
Masonite | Masonite                    
Business Combination [Line Items]                    
Common stock, outstanding (in shares) 22,070                  
Masonite | 5.375% senior notes, net of discount and financing fees, due 2028                    
Business Combination [Line Items]                    
Percentage of long-term debt tendered               94.25%    
Long-term debt, percentage rate                 5.375%  
v3.25.3
ACQUISITIONS - Fair Value of Total Purchase Consideration Transferred (Details) - Masonite
$ in Millions
May 15, 2024
USD ($)
Business Combination [Line Items]  
Closing cash consideration $ 2,935
Pre-combination vesting portion of fair value of Masonite outstanding equity awards converted to Owens Corning time vesting RSUs 35
Repayment of Masonite term loan facility 216
Total transaction consideration $ 3,186
v3.25.3
ACQUISITIONS - Preliminary Estimated Fair Value Of Common Stock (Details) - Masonite
$ / shares in Units, $ in Millions
May 15, 2024
USD ($)
$ / shares
shares
Business Combination [Line Items]  
Number of Masonite stock awards outstanding (in shares) | shares 639,608
Exchange ratio (in shares) | shares 0.7642
Owens Corning equity awards issued for Masonite outstanding equity awards (in shares) | shares 488,778
10-day weighted average closing share price of Owens Corning common stock (in dollars per share) | $ / shares $ 174.03
Fair value of Owens Corning time vesting RSUs issued for Masonite outstanding equity awards | $ $ 85
Less: Fair value allocated to post-transaction compensation expense | $ (50)
Fair value of awards included in transaction consideration | $ $ 35
v3.25.3
ACQUISITIONS - Preliminary Acquisition Date Fair Value of Net Intangible Assets Acquired, Net Of Liabilities Assumed (Details) - USD ($)
$ in Millions
May 15, 2024
Sep. 30, 2025
Dec. 31, 2024
Business Combination [Line Items]      
Goodwill   $ 2,029 $ 2,745
Masonite      
Business Combination [Line Items]      
Cash and cash equivalents $ 282    
Receivables, net 330    
Inventories 377    
Other current assets 78    
Property, plant and equipment, net 858    
Operating lease right-of-use assets 253    
Intangible assets 1,358    
Deferred income taxes 14    
Other non-current assets 91    
Total assets 3,641    
Accounts payable 196    
Current operating lease liabilities 28    
Other current liabilities 193    
Long-term debt 867    
Non-current operating lease liabilities 235    
Deferred income taxes 370    
Other non-current liabilities 45    
Net assets acquired 1,707    
Non-controlling interest (35)    
Goodwill 1,514    
Total net assets acquired 3,186    
Masonite | As originally reported      
Business Combination [Line Items]      
Cash and cash equivalents 282    
Receivables, net 330    
Inventories 379    
Other current assets 82    
Property, plant and equipment, net 861    
Operating lease right-of-use assets 253    
Intangible assets 1,579    
Deferred income taxes 14    
Other non-current assets 91    
Total assets 3,871    
Accounts payable 196    
Current operating lease liabilities 28    
Other current liabilities 187    
Long-term debt 867    
Non-current operating lease liabilities 235    
Deferred income taxes 413    
Other non-current liabilities 32    
Net assets acquired 1,913    
Non-controlling interest (35)    
Goodwill 1,308    
Total net assets acquired 3,186    
Masonite | Measurement period adjustments      
Business Combination [Line Items]      
Cash and cash equivalents 0    
Receivables, net 0    
Inventories (2)    
Other current assets (4)    
Property, plant and equipment, net (3)    
Operating lease right-of-use assets 0    
Intangible assets (221)    
Deferred income taxes 0    
Other non-current assets 0    
Total assets (230)    
Accounts payable 0    
Current operating lease liabilities 0    
Other current liabilities 6    
Long-term debt 0    
Non-current operating lease liabilities 0    
Deferred income taxes (43)    
Other non-current liabilities 13    
Net assets acquired (206)    
Non-controlling interest 0    
Goodwill 206    
Total net assets acquired 0    
Masonite | Trademarks and trade names (indefinite-lived)      
Business Combination [Line Items]      
Intangible assets 240    
Masonite | Customer relationships      
Business Combination [Line Items]      
Intangible assets $ 979    
Masonite | Customer relationships | Minimum      
Business Combination [Line Items]      
Estimated Useful Life (in years) 10 years    
Masonite | Customer relationships | Maximum      
Business Combination [Line Items]      
Estimated Useful Life (in years) 21 years    
Masonite | Technology      
Business Combination [Line Items]      
Intangible assets $ 120    
Estimated Useful Life (in years) 5 years    
Masonite | Trademarks and trade names (indefinite-lived)      
Business Combination [Line Items]      
Intangible assets $ 19    
Estimated Useful Life (in years) 10 years    
v3.25.3
ACQUISITIONS - Pro Forma Financial Information (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Business Combination [Line Items]        
Revenues $ (2,684) $ (2,763) $ (7,961) $ (7,277)
Net earnings $ (494) $ 321 $ (225) 905
Masonite        
Business Combination [Line Items]        
Pro Forma net sales from continuing operations       8,177
Pro Forma net earnings from continuing operations attributable to Owens Corning       927
Masonite | Adjustment, Removal Of Sales Of Architectural Segment        
Business Combination [Line Items]        
Revenues       119
Masonite | Adjustment, Transaction Costs Incurred By Acquiree        
Business Combination [Line Items]        
Net earnings       56
Masonite | Adjustment, Transaction Costs Incurred By Acquirer        
Business Combination [Line Items]        
Net earnings       49
Masonite | Adjustment, Interest Expense, Discount Amortization And Capitalized Financing Cost Amortization        
Business Combination [Line Items]        
Net earnings       (49)
Masonite | Adjustment, Tax Impacts Of Proforma Adjustments        
Business Combination [Line Items]        
Net earnings       $ (91)
v3.25.3
DIVESTITURES (Details)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Nov. 04, 2024
USD ($)
manufacturing_facility
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Current assets of discontinued operations   $ 424   $ 424   $ 427
Loss on sale of business   $ 2 $ 0 $ 28 $ 0 91
Revision of Prior Period, Reclassification, Adjustment            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Current assets of discontinued operations           $ 2
Building Materials Business            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Annual revenues $ 130          
Building Materials Business | CHINA            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Number of manufacturing facilities | manufacturing_facility 6          
Building Materials Business | KOREA, REPUBLIC OF            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Number of manufacturing facilities | manufacturing_facility 1          
v3.25.3
WARRANTIES (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Movement In Standard And Extended Product Warranty Increase Decrease Roll Forward    
Product warranty accrual, beginning balance $ 99 $ 97
Amounts accrued for current year 20 15
Acquired obligations 0 4
Settlements of warranty claims (24) (17)
Product warranty accrual, ending balance $ 95 $ 99
v3.25.3
RESTRUCTURING (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Jun. 30, 2025
Dec. 31, 2023
May 31, 2023
Mar. 31, 2023
Restructuring Cost and Reserve [Line Items]                    
Loss on sale of business   $ 2 $ 0 $ 28 $ 0 $ 91        
Restructuring costs   23 1 44 62          
Restructuring Reserve [Roll Forward]                    
Restructuring costs   23 1 44 62          
Building Materials Business Exit                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs       (2)            
Restructuring Reserve [Roll Forward]                    
Restructuring Reserve, Beginning Balance       6            
Restructuring costs       (2)            
Payments       (3)            
Restructuring Reserve, Accelerated Depreciation And Other Non-Cash Items       0            
Restructuring Reserve, Ending Balance $ 1 1   1   6        
Cumulative charges incurred 3 3   3            
Wabash, Indiana Facility Closure                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs       0 0          
Restructuring Reserve [Roll Forward]                    
Restructuring Reserve, Beginning Balance       0 3 3        
Restructuring costs       0 0          
Payments       0 (3)          
Restructuring Reserve, Accelerated Depreciation And Other Non-Cash Items       0 0          
Restructuring Reserve, Ending Balance 0 0 0 0 0 0        
Cumulative charges incurred 33 33 33 33 33          
Acquisition-related Restructuring                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs       37 45          
Restructuring Reserve [Roll Forward]                    
Restructuring Reserve, Beginning Balance       3 0 0        
Restructuring costs       37 45          
Payments       (10) (21)          
Restructuring Reserve, Accelerated Depreciation And Other Non-Cash Items       (24) (23)          
Restructuring Reserve, Ending Balance 6 6 1 6 1 3        
Cumulative charges incurred 109 109 45 109 45          
Global Composites Restructuring                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs       5 10          
Restructuring Reserve [Roll Forward]                    
Restructuring Reserve, Beginning Balance       14 12 12        
Restructuring costs       5 10          
Payments       (7) (4)          
Restructuring Reserve, Accelerated Depreciation And Other Non-Cash Items       0 (8)          
Restructuring Reserve, Ending Balance 12 12 10 12 10 14        
Cumulative charges incurred 43 43 26 43 26          
Protective Packaging Exit                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs       0 4          
Restructuring Reserve [Roll Forward]                    
Restructuring Reserve, Beginning Balance       0 1 1        
Restructuring costs       0 4          
Payments       0 (3)          
Restructuring Reserve, Accelerated Depreciation And Other Non-Cash Items       0 (2)          
Restructuring Reserve, Ending Balance 0 0 0 0 0 0        
Cumulative charges incurred 83 83 82 83 82          
European Operating Structure Optimization                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost                   $ 20
Restructuring costs       (3) 3          
Severance costs       3            
Restructuring Reserve [Roll Forward]                    
Restructuring Reserve, Beginning Balance       5 6 6        
Restructuring costs       (3) 3          
Payments       (2) (4)          
Restructuring Reserve, Accelerated Depreciation And Other Non-Cash Items       0 0          
Restructuring Reserve, Ending Balance 0 0 5 0 5 5        
Cumulative charges incurred 12 12 15 12 15          
Roofing Integration Restructuring                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs       7            
Restructuring Reserve [Roll Forward]                    
Restructuring Reserve, Beginning Balance       0            
Restructuring costs       7            
Payments       0            
Restructuring Reserve, Accelerated Depreciation And Other Non-Cash Items       (6)            
Restructuring Reserve, Ending Balance 1 1   1   $ 0        
Cumulative charges incurred 7 7   7            
Employee Severance And Other Exit Costs | Building Materials Business Exit                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost 15 15   15            
Employee Severance And Other Exit Costs | Acquisition-Related Restructuring, Prineville                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost             $ 12      
Employee Severance And Other Exit Costs | Acquisition-Related Restructuring, Greenville                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost 7 7   7            
Employee Severance And Other Exit Costs | Global Composites Restructuring | Minimum                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost               $ 20    
Employee Severance And Other Exit Costs | Global Composites Restructuring | Maximum                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost               30    
Employee Severance And Other Exit Costs | Protective Packaging Exit                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost                 $ 15  
Accelerated depreciation | Cost of sales                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs   16 1 25 8          
Restructuring Reserve [Roll Forward]                    
Restructuring costs   16 1 25 8          
Accelerated depreciation | Acquisition-related Restructuring                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs       24            
Restructuring Reserve [Roll Forward]                    
Restructuring costs       24            
Accelerated depreciation | Acquisition-Related Restructuring, Greenville                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost 10 10   10            
Accelerated depreciation | Global Composites Restructuring | Minimum                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost               15    
Accelerated depreciation | Global Composites Restructuring | Maximum                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost               20    
Accelerated depreciation | Protective Packaging Exit | Minimum                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost                 70  
Accelerated depreciation | Protective Packaging Exit | Maximum                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost                 $ 75  
Employee Severance And Accelerated Depreciation | Wabash, Indiana Facility Closure                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost               $ 30    
Other exit costs | Cost of sales                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs   6 1 7 6          
Restructuring Reserve [Roll Forward]                    
Restructuring costs   6 1 7 6          
Other exit costs | Marketing and administrative expenses                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs   0 0 1 1          
Restructuring Reserve [Roll Forward]                    
Restructuring costs   0 0 1 1          
Other exit costs | Other expense, net                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs   0 0 1 0          
Restructuring Reserve [Roll Forward]                    
Restructuring costs   0 0 1 0          
Severance                    
Restructuring Reserve [Roll Forward]                    
Restructuring Reserve, Ending Balance 20 20   20            
Severance | Other expense, net                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs   1 (1) 10 47          
Restructuring Reserve [Roll Forward]                    
Restructuring costs   $ 1 $ (1) 10 $ 47          
Severance | Acquisition-related Restructuring                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs       13            
Restructuring Reserve [Roll Forward]                    
Restructuring costs       13            
Severance | Global Composites Restructuring                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs       5            
Restructuring Reserve [Roll Forward]                    
Restructuring costs       5            
Severance | Roofing Integration Restructuring                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs       1            
Restructuring Reserve [Roll Forward]                    
Restructuring costs       1            
Accelerated Depreciation And Inventory Write-Offs | Acquisition-Related Restructuring, Prineville                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring cost, expected cost             $ 30      
Accelerated Depreciation and Other Exit Costs | Roofing Integration Restructuring                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs       6            
Restructuring Reserve [Roll Forward]                    
Restructuring costs       $ 6            
Accelerated Depreciation, Asset Write-Offs, And Other Exit Costs | Roofing Integration Restructuring                    
Restructuring Cost and Reserve [Line Items]                    
Restructuring costs 22                  
Restructuring Reserve [Roll Forward]                    
Restructuring costs $ 22                  
v3.25.3
DEBT (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended
Mar. 01, 2025
Feb. 01, 2025
May 16, 2024
May 15, 2024
Aug. 12, 2019
Jun. 26, 2017
Aug. 08, 2016
Nov. 12, 2014
May 31, 2024
Mar. 31, 2025
Mar. 31, 2018
Sep. 30, 2025
Mar. 05, 2025
Mar. 04, 2025
Dec. 31, 2024
May 22, 2024
May 13, 2024
May 01, 2024
Apr. 15, 2024
Mar. 01, 2024
May 12, 2020
Jan. 25, 2018
Oct. 31, 2006
Debt Instrument [Line Items]                                              
Carrying Value                       $ 5,114     $ 5,099                
Fair Value                       99.00%     0.00%                
Fair Value                       100.00%     100.00%                
Less – current portion of senior notes                       $ 399     $ 0                
Less – current portion of finance leases and other                       37     32                
Long-term debt, net of current portion                       $ 4,678     5,067                
Masonite                                              
Debt Instrument [Line Items]                                              
Repayments of debt       $ 216                                      
3.400% senior notes, net of discount and financing fees, due 2026                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                       3.40%                      
Carrying Value                       $ 399     $ 399                
Fair Value                       99.00%     98.00%                
Debt instrument, face amount             $ 400                                
5.500% senior notes, net of discount and financing fees, due 2027                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                 5.50%     5.50%                      
Carrying Value                       $ 498     $ 497                
Fair Value                       102.00%     102.00%                
Debt instrument, face amount                 $ 500                            
5.375% senior notes, net of discount and financing fees, due 2028                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                       5.375%                      
Carrying Value                       $ 0     $ 29                
Fair Value                       0.00%     99.00%                
Repayments of debt   $ 30                                          
5.375% senior notes, net of discount and financing fees, due 2028 | Masonite                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                                     5.375%        
Carrying Value                                     $ 29        
Debt instrument, face amount                                     $ 501        
Repayments of debt     $ 480                                        
Percentage of long-term debt tendered                                 94.25%            
Interest expense     7                                        
Premium on long-term debt     $ 1                                        
3.950% senior notes, net of discount and financing fees, due 2029                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                       3.95%                      
Carrying Value                       $ 448     $ 447                
Fair Value                       99.00%     95.00%                
Debt instrument, face amount         $ 450                                    
3.500% senior notes, net of discount and financing fees, due 2030                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                       3.50%                      
Carrying Value                       $ 2     $ 2                
Fair Value                       90.00%     89.00%                
3.500% senior notes, net of discount and financing fees, due 2030                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                       3.50%                      
Carrying Value                       $ 342     $ 338                
Fair Value                       97.00%     93.00%                
3.875% senior notes, net of discount and financing fees, due 2030                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                       3.875%                      
Carrying Value                       $ 298     $ 298                
Fair Value                       98.00%     94.00%                
Debt instrument, face amount                                         $ 300    
5.700% senior notes, net of discount and financing fees, due 2034                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                 5.70%     5.70%                      
Carrying Value                       $ 791     $ 790                
Fair Value                       105.00%     102.00%                
Debt instrument, face amount                 $ 800                            
7.000% senior notes, net of discount and financing fees, due 2036                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                       7.00%                      
Carrying Value                       $ 369     $ 369                
Fair Value                       115.00%     112.00%                
Debt instrument, face amount                                             $ 550
Repayments of debt         34 $ 140                                  
4.300% senior notes, net of discount and financing fees, due 2047                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                       4.30%                      
Carrying Value                       $ 590     $ 589                
Fair Value                       83.00%     80.00%                
Debt instrument, face amount           600                                  
4.400% senior notes, net of discount and financing fees, due 2048                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                       4.40%                      
Carrying Value                       $ 391     $ 391                
Fair Value                       83.00%     80.00%                
Debt instrument, face amount                                           $ 400  
5.950% senior notes, net of discount and financing fees, due 2054                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                 5.95%     5.95%                      
Carrying Value                       $ 683     $ 683                
Fair Value                       103.00%     99.00%                
Debt instrument, face amount                 $ 700                            
Various finance leases, due through 2032                                              
Debt Instrument [Line Items]                                              
Carrying Value                       $ 303     $ 267                
Fair Value                       100.00%     100.00%                
Senior Notes Due 2022                                              
Debt Instrument [Line Items]                                              
Repayments of debt         $ 416                                    
Senior Notes Due 2019                                              
Debt Instrument [Line Items]                                              
Repayments of debt           $ 144   $ 105                              
Senior Notes Due 2016                                              
Debt Instrument [Line Items]                                              
Repayments of debt             $ 158 242                              
Senior Revolving Credit Facility                                              
Debt Instrument [Line Items]                                              
Proceeds from issuance of debt                     $ 600                        
Line of credit facility, maximum borrowing capacity                         $ 1,500 $ 1,000                  
Borrowings from lines of credit   30                                          
Long-Term Line of Credit                       $ 0                      
Line of Credit Facility, Remaining Borrowing Capacity                       1,500                      
Receivables Securitization Facility                                              
Debt Instrument [Line Items]                                              
Borrowings from lines of credit   $ 299                                          
364-Day Credit Facility                                              
Debt Instrument [Line Items]                                              
Line of credit facility, maximum borrowing capacity                                       $ 3,000      
Debt instrument, term 364 days                                            
364-Day Credit Facility | Masonite                                              
Debt Instrument [Line Items]                                              
Borrowings from lines of credit                 2,800                            
Financing costs                 $ 16                            
Masonite 2030 Notes | Masonite                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                                   3.50%          
Carrying Value                                   $ 2          
Percentage of long-term debt tendered                               99.51%              
Owens Corning 2030 Notes | Masonite                                              
Debt Instrument [Line Items]                                              
Long-term debt, percentage rate                                   3.50%          
Debt instrument, face amount                               $ 373              
Commercial Paper                                              
Debt Instrument [Line Items]                                              
Debt instrument, term 397 days                                            
Commercial Paper                       $ 40                      
Debt, Weighted Average Interest Rate                       4.25%                      
Debt, Weighted Average Maturity Period                       12 days                      
Commercial Paper, Maximum Borrowing Capacity                         $ 1,500                    
Senior Notes Due 2024                                              
Debt Instrument [Line Items]                                              
Debt instrument, face amount               $ 400                              
Repayments of debt                   $ 400                          
v3.25.3
CONTINGENT LIABILITIES AND OTHER MATTERS (Details)
$ in Millions
Sep. 30, 2025
USD ($)
site
Unusual or Infrequent Item, or Both [Line Items]  
Environmental liability sites 25
Environmental exit costs, accrual | $ $ 3
Environmental exit costs, accrual, current | $ $ 1
Superfund Site  
Unusual or Infrequent Item, or Both [Line Items]  
Environmental liability sites 10
Owned or Formally Owned Sites  
Unusual or Infrequent Item, or Both [Line Items]  
Environmental liability sites 15
v3.25.3
STOCK COMPENSATION - Narrative (Details)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
May 15, 2024
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
$ / shares
shares
Sep. 30, 2024
USD ($)
$ / shares
Feb. 08, 2024
$ / shares
Apr. 16, 2020
shares
Apr. 18, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Maximum employee subscription rate               85.00%
General and Administrative Expense                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Allocated share based compensation expense (less than)   $ 15 $ 21 $ 54 $ 74      
General and Administrative Expense | Continuing Operations                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Allocated share based compensation expense (less than)   14 20 50 70      
General and Administrative Expense | Discontinued Operations                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Allocated share based compensation expense (less than)   1 1 4 4      
Acquisition-related Restructuring                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Accelerated depreciation and other non-cash items       24 $ 23      
Masonite                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Exchange ratio (in shares) | shares 0.7642              
Purchase price (in dollars per share) | $ / shares $ 133.00         $ 133.00    
10-day weighted average closing share price of Owens Corning common stock (in dollars per share) | $ / shares $ 174.03              
Fair value of Owens Corning time vesting RSUs issued for Masonite outstanding equity awards $ 85              
Fair value of awards included in transaction consideration 35              
Post-combination expense $ 50              
Equity Issued in Business Combination, Post-Transaction Compensation Expense, Accelerated   26   $ 26        
Internal Based Performance Metric                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period       3 years        
Grant date fair value of units granted | $ / shares       $ 171.94 $ 147.18      
External Based Performance Metric                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period       3 years        
Options                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Employee emergence equity program expense   2 $ 2 $ 7 $ 6      
Restricted Stock Units (RSUs)                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period       1 year 9 months 29 days        
Compensation cost not yet recognized   $ 56   $ 56        
Vested in period, fair value       $ 49 $ 73      
Restricted Stock Units (RSUs) | Masonite                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares available for grant | shares   600,000   600,000        
Vesting period       1 year 2 months 1 day        
Shares converted (in shares) | shares 300,000              
Restricted Stock Units (RSUs) | Minimum                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period       3 years        
Restricted Stock Units (RSUs) | Maximum                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period       4 years        
Restricted Stock Units (RSUs), Converted Masonite Equity Awards                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Compensation cost not yet recognized   $ 6   $ 6        
Restricted Stock Units (RSUs), Owens Corning Stock Plans                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Compensation cost not yet recognized   50   $ 50        
Performance Stock Units (PSUs)                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period       1 year 9 months 29 days        
Compensation cost not yet recognized   21   $ 21        
Employee Stock                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Compensation cost not yet recognized   $ 1   $ 1        
Offering period (in months)       6 months        
Performance Restricted Stock Units ("PRSUs") | Masonite                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Shares converted (in shares) | shares 200,000              
Performance Restricted Stock Units ("PRSUs") | Masonite | Grant Tranche, One                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Percentage of shares granted 107.33%              
Performance Restricted Stock Units ("PRSUs") | Masonite | Grant Tranche, Two                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Percentage of shares granted 100.00%              
Performance Restricted Stock Units ("PRSUs") | Masonite | Grant Tranche, Three                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Percentage of shares granted 122.00%              
2023 Stock Plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares available for grant | shares   2,600,000   2,600,000        
Internal Based Performance Metric                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Performance stock payout minimum       0        
Performance stock payout range maximum       2        
External Based Performance Metric                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period       3 years        
Performance stock payout minimum       0        
Performance stock payout range maximum       2        
Employee Stock Purchase Plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares available for grant | shares   2,900,000   2,900,000     4,200,000  
Performance Stock Units (PSUs) 2018                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Expected volatility       32.78% 33.88%      
Risk free interest rate       4.14% 3.94%      
Expected term (in years)       2 years 10 months 24 days 2 years 10 months 28 days      
Grant date fair value of units granted | $ / shares       $ 221.54 $ 195.95      
v3.25.3
STOCK COMPENSATION - Restricted Stock Unit (Details) - Restricted Stock
 9 Months Ended
Sep. 30, 2025
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Balance at December 31, 2024 | shares 1,249,146
Granted (in shares) | shares 305,753
Vested (in shares) | shares (432,800)
Forfeited (in shares) | shares (75,903)
Balance at September 30, 2025 | shares 1,046,196
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Balance at December 31, 2024 | $ / shares $ 107.31
Granted, weighted average grant date fair value | $ / shares 170.89
Vested, weighted average grant date fair value | $ / shares 112.39
Forfeited, weighted average grant date fair value | $ / shares 141.76
Balance at September 30, 2025 | $ / shares $ 121.28
v3.25.3
STOCK COMPENSATION - Grant Date Fair Value Of Units Granted (Details) - $ / shares
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Internal Based Performance Metric    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Grant date fair value of units granted $ 171.94 $ 147.18
v3.25.3
STOCK COMPENSATION - Performance Stock Units (Details) - Performance Stock Units (PSUs)
 9 Months Ended
Sep. 30, 2025
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Balance at December 31, 2024 | shares 219,075
Granted (in shares) | shares 120,321
Vested (in shares) | shares 0
Forfeited (in shares) | shares (55,338)
Balance at September 30, 2025 | shares 284,058
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Balance at December 31, 2024 | $ / shares $ 117.23
Granted, weighted average grant date fair value | $ / shares 188.47
Vested, weighted average grant date fair value | $ / shares 0
Forfeited, weighted average grant date fair value | $ / shares 155.49
Balance at September 30, 2025 | $ / shares $ 147.55
v3.25.3
EARNINGS PER SHARE (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Earnings Per Share [Abstract]        
NET (LOSS) EARNINGS FROM CONTINUING OPERATIONS ATTRIBUTABLE TO OWENS CORNING $ (495) $ 287 $ 94 $ 821
Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax 1 34 (318) 84
NET (LOSS) EARNINGS ATTRIBUTABLE TO OWENS CORNING $ (494) $ 321 $ (224) $ 905
Basic (in shares) 83,400,000 87,000,000.0 84,700,000 87,200,000
Non-vested restricted stock units and performance share units (in shares) 0 900,000 600,000 800,000
Weighted-average number of shares outstanding and common equivalent shares used for diluted earnings per share 83,400,000 87,900,000 85,300,000 88,000,000.0
Basic - continuing operations (in dollars per share) $ (5.93) $ 3.30 $ 1.11 $ 9.42
Basic - discontinued operations (in dollars per share) 0.01 0.39 (3.75) 0.96
Basic (in dollars per share) (5.92) 3.69 (2.64) 10.38
Diluted - continuing operations (in dollars per share) (5.93) 3.26 1.10 9.33
Diluted - discontinued operations (in dollars per share) 0.01 0.39 (3.73) 0.95
Diluted (in dollars per share) $ (5.92) $ 3.65 $ (2.63) $ 10.28
Antidilutive securities excluded from computation of earnings per share amount 0 0 0 0
v3.25.3
EARNINGS PER SHARE - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
May 13, 2025
Dec. 01, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Antidilutive securities excluded from computation of earnings per share amount 0 0 0 0    
2025 Repurchase Authorization            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Stock repurchase program, number of shares authorized to be repurchased         12,000,000  
Combined Repurchase Programs            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Stock repurchase program, number of shares authorized to be repurchased           10,000,000
Stock repurchased during period, shares     3,800,000 2,100,000    
Payments for repurchase of equity     $ 545.0 $ 332.0    
Share Repurchase Program, Remaining Authorized, Amount $ 14.6   $ 14.6      
v3.25.3
INCOME TAXES (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Income Tax Disclosure [Abstract]        
Income tax expense $ 102 $ 118 $ 300 $ 302
Effective tax rate (26.00%) 29.00% 77.00% 27.00%
U.S. federal statutory tax rate 21.00% 21.00% 21.00% 21.00%
v3.25.3
CHANGES IN ACCUMULATED OTHER COMPREHENSIVE DEFICIT (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance $ 5,204 $ 5,525 $ 5,120 $ 5,185
Other comprehensive (loss) income, net of tax (6) 65 238 (31)
Amounts classified into AOCI, net of tax (1) 1 (6) 11
Ending balance 4,438 5,673 4,438 5,673
Currency Translation Adjustment        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance (280) (421) (534) (318)
(Loss) gain on foreign currency translation (5) 69 249 (34)
Other comprehensive (loss) income, net of tax (5) 69 249 (34)
Ending balance (285) (352) (285) (352)
Pension and Other Postretirement Adjustment        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance (189) (197) (181) (196)
Other comprehensive (loss) income, net of tax 1 (4) (7) (5)
Amounts reclassified from AOCI to net earnings, net of tax 0 0 (1) (1)
Amounts classified into AOCI, net of tax 1 (4) (6) (4)
Ending balance (188) (201) (188) (201)
Hedging Adjustment        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance 19 21 24 11
Other comprehensive (loss) income, net of tax (1) 1 (6) 11
Amounts reclassified from AOCI to net earnings, net of tax 0 2 (2) 12
Amounts classified into AOCI, net of tax (1) (1) (4) (1)
Ending balance 18 22 18 22
AOCI        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance (450) (597) (691) (503)
Ending balance $ (455) $ (531) $ (455) $ (531)