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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 | Dec. 31, 2024 | Mar. 31, 2018 | Jun. 30, 2025 | Mar. 05, 2025 | Mar. 04, 2025 | 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] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair Value |  |  |  |  |  |  |  |  |  | 100.00% |  | 100.00% |  |  |  |  |  |  |  |  |  |
Other |  |  |  |  |  |  |  |  |  | $ 5,099 |  | $ 5,116 |  |  |  |  |  |  |  |  |  |
Less – current portion of senior notes |  |  |  |  |  |  |  |  |  | 32 |  | 36 |  |  |  |  |  |  |  |  |  |
Long-term debt, net of current portion |  |  |  |  |  |  |  |  |  | 5,067 |  | $ 5,080 |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  | 98.00% |  | 99.00% |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  | $ 497 |  | $ 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 |  |  |  |  |  |  |  |  |  | $ 29 |  | $ 0 |  |  |  |  |  |  |  |  |  |
Fair Value |  |  |  |  |  |  |  |  |  | 99.00% |  | 0.00% |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  | $ 447 |  | $ 448 |  |  |  |  |  |  |  |  |  |
Fair Value |  |  |  |  |  |  |  |  |  | 95.00% |  | 98.00% |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  | 89.00% |  | 90.00% |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  | $ 338 |  | $ 341 |  |  |  |  |  |  |  |  |  |
Fair Value |  |  |  |  |  |  |  |  |  | 93.00% |  | 96.00% |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  | 94.00% |  | 97.00% |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  | $ 790 |  | $ 790 |  |  |  |  |  |  |  |  |  |
Fair Value |  |  |  |  |  |  |  |  |  | 102.00% |  | 104.00% |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  | 112.00% |  | 113.00% |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  | $ 589 |  | $ 590 |  |  |  |  |  |  |  |  |  |
Fair Value |  |  |  |  |  |  |  |  |  | 80.00% |  | 81.00% |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  | 80.00% |  | 82.00% |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  | 99.00% |  | 101.00% |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  | $ 700 |  |  |  |  |  |  |  |  |  |  |  |  |
Various finance leases, due through 2032 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying Value |  |  |  |  |  |  |  |  |  | $ 267 |  | $ 308 |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  |  |  | $ 420 |  |  |  |  |  |  |  |  |  |
Debt, Weighted Average Interest Rate |  |  |  |  |  |  |  |  |  |  |  | 4.60% |  |  |  |  |  |  |  |  |  |
Debt, Weighted Average Maturity Period |  |  |  |  |  |  |  |  |  |  |  | 27 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 |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Business Acquisition, Percentage Of Long-Term Debt Tendered + References No definition available. + Details
Name: | oc_BusinessAcquisitionPercentageOfLongTermDebtTendered
Namespace Prefix: | oc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Commercial Paper, Maximum Borrowing Capacity + References No definition available. + Details
Name: | oc_CommercialPaperMaximumBorrowingCapacity
Namespace Prefix: | oc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt, Weighted Average Maturity Period + References No definition available. + Details
Name: | oc_DebtWeightedAverageMaturityPeriod
Namespace Prefix: | oc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total carrying amount on the balance sheet date pertaining to the fair value adjustment to debt resulting from the interest rate swap unwind. This swap agreement was entered into in the 4th quarter of 2009 to manage interest rate risk by swapping $500 million of fixed interest rate into variable rate. + References No definition available. + Details
Name: | oc_FairValueAdjustmentToDebt
Namespace Prefix: | oc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Financing Costs, Debt + References No definition available. + Details
Name: | oc_FinancingCostsDebt
Namespace Prefix: | oc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair value disclosure of the trading value of the Company's outstanding senior notes payable in relation to par as of the balance sheet date. + References No definition available. + Details
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