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

Business Sale, Revenue Reported For Business Sold For Last Annual Period

No definition available.

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

Number Of Manufacturing Facilities

No definition available.

Name:	oc_NumberOfManufacturingFacilities
Namespace Prefix:	oc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

No definition available.

Name:	us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481203/810-10-50-1B