Name:	dei_DocumentPeriodEndDate
Namespace Prefix:	dei_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

The adjustment of the balance of the accrued amount for the asbestos related liability based on a review of the historical asbestos claim and resolution activity by management and their subject matter experts.

No definition available.

Name:	ucc_AsbestosRelatedChargesCredit
Namespace Prefix:	ucc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Asbestos Related Liability Future Claims Percentage

No definition available.

Name:	ucc_AsbestosRelatedLiabilityFutureClaimsPercentage
Namespace Prefix:	ucc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The percentage of the recorded asbestos liability related to pending claims.

No definition available.

Name:	ucc_AsbestosRelatedLiabilityPendingClaimsPercentage
Namespace Prefix:	ucc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Asbestos Related Loss Contingency, Range of Possible Loss, Maximum-Loss contingency range for pending and future asbestos claims, maximum end of the range

No definition available.

Name:	ucc_AsbestosRelatedLossContingencyRangeofPossibleLossMaximum
Namespace Prefix:	ucc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Asbestos Related Loss Contingency, Range of Outcomes, Minimum Low end of potential range of liabilities for pending and future asbestos claims

No definition available.

Name:	ucc_AsbestosRelatedLossContingencyRangeofPossibleLossMinimum
Namespace Prefix:	ucc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Defense and Resolution Costs for Asbestos Related Claims

No definition available.

Name:	ucc_DefenseAndResolutionCostsAsbestosRelatedClaims
Namespace Prefix:	ucc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Carrying amount as of the balance sheet date of reserves for the costs of settling insured claims and costs incurred in the claims settlement process attributable to asbestos claims, before estimated recoveries from reinsurers.

No definition available.

Name:	ucc_LiabilityForAsbestosClaimsGross
Namespace Prefix:	ucc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5