Number of Segments Combined

No definition available.

Name:	ctb_NumberofSegmentsCombined
Namespace Prefix:	ctb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Restructuring and Related Cost, Remaining Number of Positions After Elimination

+ References

No definition available.

+ Details

Name:	ctb_RestructuringandRelatedCostRemainingNumberofPositionsAfterElimination
Namespace Prefix:	ctb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of stores.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfStores
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The expected number of positions to be eliminated as a result of restructuring activities.

+ References

No definition available.

+ Details

Name:	us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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

- Details

Name:	srt_OwnershipAxis=ctb_COOCSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Business Segments - Additional Information (Detail)		3 Months Ended
Business Segments - Additional Information (Detail)	Jan. 17, 2019 Employee	Mar. 31, 2020 Store Segment	Jan. 24, 2020
Segment Reporting [Abstract]
Number of reportable segments \| Segment		4
Noncontrolling Interest [Line Items]
Number of stores \| Store		3
Number of segments combined \| Segment		2
Restructuring, expected number of positions eliminated \| Employee	300
Restructuring, remaining number of positions after elimination \| Employee	400
COOCSA
Noncontrolling Interest [Line Items]
Noncontrolling interest, ownership percentage			41.57%