Business Acquisition, Percentage Of Long-Term Debt Tendered

No definition available.

Name:	oc_BusinessAcquisitionPercentageOfLongTermDebtTendered
Namespace Prefix:	oc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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

- 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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	oc_LongTermDebtLineItems
Namespace Prefix:	oc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	oc_NotesPayableFairValueDisclosureParValue
Namespace Prefix:	oc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Payment Of Premium On Long-Term Debt

+ References

No definition available.

+ Details

Name:	oc_PaymentOfPremiumOnLongTermDebt
Namespace Prefix:	oc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_CommercialPaper
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482949/835-30-55-8

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482900/835-30-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Aggregate amount of interest paid or due on all long-term debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph a
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph b
-Subparagraph (1)
-Publisher SEC

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(8))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

+ Details

Name:	us-gaap_InterestExpenseLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-4

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482949/835-30-55-8

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-4

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

+ Details

Name:	us-gaap_LongTermDebtPercentageBearingFixedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

+ Details

Name:	us-gaap_RepaymentsOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481372/852-10-55-10

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

+ Details

Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_ShortTermBorrowingsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNotesDue2030Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNotesDue2029Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNotesDue2036Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNote2048Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNote2047Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_Seniornotesdue2026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNotesDue2016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNotesDue2019Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNotesDue2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorRevolvingCreditFacilityBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNotesDue2027Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNotesDue2034Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNotesDue2054Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNotesDue2030Masonite2030NotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=oc_MasoniteInternationalCorporationMasoniteMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNotesDue2030OwensCorning2030NotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=oc_SeniorNotesDue2028Masonite2028NotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_CommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

DEBT (Details) - USD ($) $ in Millions							3 Months Ended
DEBT (Details) - USD ($) $ in Millions	Mar. 01, 2025	Feb. 01, 2025	May 16, 2024	Aug. 12, 2019	Jun. 26, 2017	Aug. 08, 2016	Mar. 31, 2018	Mar. 31, 2026	Dec. 31, 2025	Mar. 05, 2025	Mar. 04, 2025	May 31, 2024	May 22, 2024	May 13, 2024	May 01, 2024	Apr. 15, 2024	May 12, 2020	Jan. 25, 2018	Oct. 31, 2006
Short-term Debt [Abstract]
Short-term debt								$ 383	$ 50
Long-term debt								$ 5,124	$ 5,122
Notes payable, fair value								100.00%	100.00%
Notes Payable, Fair Value Disclosure, Par Value								(100.00%)	(100.00%)
3.875% senior notes, net of discount and financing fees, due 2030
Long-Term Debt [Line Items]
Face amount																	$ 300
3.950% senior notes, net of discount and financing fees, due 2029
Long-Term Debt [Line Items]
Fixed interest, percentage rate								3.95%
Face amount				$ 450
Short-term Debt [Abstract]
Long-term debt								$ 448	$ 448
Notes payable, fair value								98.00%	99.00%
Notes Payable, Fair Value Disclosure, Par Value								(98.00%)	(99.00%)
7.000% senior notes, net of discount and financing fees, due 2036
Long-Term Debt [Line Items]
Fixed interest, percentage rate								7.00%
Face amount																			$ 550
Repayments				34	$ 140
Short-term Debt [Abstract]
Long-term debt								$ 369	$ 369
Notes payable, fair value								112.00%	114.00%
Notes Payable, Fair Value Disclosure, Par Value								(112.00%)	(114.00%)
4.400% senior notes, net of discount and financing fees, due 2048
Long-Term Debt [Line Items]
Fixed interest, percentage rate								4.40%
Face amount																		$ 400
Short-term Debt [Abstract]
Long-term debt								$ 391	$ 391
Notes payable, fair value								80.00%	82.00%
Notes Payable, Fair Value Disclosure, Par Value								(80.00%)	(82.00%)
4.300% senior notes, net of discount and financing fees, due 2047
Long-Term Debt [Line Items]
Fixed interest, percentage rate								4.30%
Face amount					600
Short-term Debt [Abstract]
Long-term debt								$ 590	$ 590
Notes payable, fair value								79.00%	82.00%
Notes Payable, Fair Value Disclosure, Par Value								(79.00%)	(82.00%)
3.400% senior notes, net of discount and financing fees, due 2026
Long-Term Debt [Line Items]
Fixed interest, percentage rate								3.40%
Face amount						$ 400
Short-term Debt [Abstract]
Long-term debt								$ 400	$ 399
Notes payable, fair value								100.00%	100.00%
Notes Payable, Fair Value Disclosure, Par Value								(100.00%)	(100.00%)
Senior Notes Due 2016
Long-Term Debt [Line Items]
Repayments						$ 158
9.00% senior notes, net of discount and financing fees, due 2019
Long-Term Debt [Line Items]
Repayments					$ 144
Senior Notes Due 2022 [Member]
Long-Term Debt [Line Items]
Repayments				$ 416
Senior Revolving Credit Facility B
Long-Term Debt [Line Items]
Proceeds from issuance of debt							$ 600
Borrowing capacity under credit facility										$ 1,500	$ 1,000
Senior Notes Due 2027
Long-Term Debt [Line Items]
Fixed interest, percentage rate								5.50%				5.50%
Face amount												$ 500
Short-term Debt [Abstract]
Long-term debt								$ 498	$ 498
Notes payable, fair value								101.00%	102.00%
Notes Payable, Fair Value Disclosure, Par Value								(101.00%)	(102.00%)
Senior Notes Due 2034
Long-Term Debt [Line Items]
Fixed interest, percentage rate								5.70%				5.70%
Face amount												$ 800
Short-term Debt [Abstract]
Long-term debt								$ 791	$ 791
Notes payable, fair value								103.00%	105.00%
Notes Payable, Fair Value Disclosure, Par Value								(103.00%)	(105.00%)
Senior Notes Due 2054
Long-Term Debt [Line Items]
Fixed interest, percentage rate								5.95%				5.95%
Face amount												$ 700
Short-term Debt [Abstract]
Long-term debt								$ 683	$ 683
Notes payable, fair value								99.00%	102.00%
Notes Payable, Fair Value Disclosure, Par Value								(99.00%)	(102.00%)
Senior Notes Due 2030 ("Masonite 2030 Notes") \| Masonite International Corporation ("Masonite")
Long-Term Debt [Line Items]
Fixed interest, percentage rate															3.50%
Short-term Debt [Abstract]
Long-term debt															$ 2
Business Acquisition, Percentage Of Long-Term Debt Tendered													99.51%
Senior Notes Due 2030 ("Owens Corning 2030 Notes") \| Masonite International Corporation ("Masonite")
Long-Term Debt [Line Items]
Fixed interest, percentage rate															3.50%
Face amount													$ 373
Senior Notes Due 2028 ("Masonite 2028 Notes")
Long-Term Debt [Line Items]
Repayments		$ 30
Senior Notes Due 2028 ("Masonite 2028 Notes") \| Masonite International Corporation ("Masonite")
Long-Term Debt [Line Items]
Fixed interest, percentage rate																5.375%
Face amount																$ 501
Repayments			$ 480
Short-term Debt [Abstract]
Long-term debt																$ 29
Business Acquisition, Percentage Of Long-Term Debt Tendered														94.25%
Interest Expense, Long-Term Debt			7
Payment Of Premium On Long-Term Debt			$ 1
Commercial Paper
Short-term Debt [Abstract]
Term (in years)	397 days
Commercial Paper, Maximum Borrowing Capacity										$ 1,500
Commercial Paper								$ 380	$ 50
Debt, Weighted Average Interest Rate								4.10%	3.95%
Debt, Weighted Average Maturity Period								9 days	13 days