Represents the number of conditions required to close on a business combination that were satisfied during the period.

No definition available.

Name:	ccc_BusinessAcquisitionNumberOfClosingConditionsSatisfied
Namespace Prefix:	ccc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Reflects the amount of termination fee payable by the reporting entity if the merger agreement is terminated under certain circumstances.

+ References

No definition available.

+ Details

Name:	ccc_LossContingencyTerminationFeeForMergerAgreementTerminated
Namespace Prefix:	ccc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460

+ Details

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

- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_TypeOfArrangementAxis=ccc_DefinitiveMergerAgreementWithKurarayCompanyLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_OtherCommitmentsAxis=ccc_InvestmentBankingAdvisoryServicesAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=ccc_ClosingOfMergerTransactionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=ccc_AnnouncementOfExecutionOfMergerAgreementTransactionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	dei_LegalEntityAxis=ccc_KurarayCompanyLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=ccc_PendingSatisfactionOfClosingConditionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Pending Merger (Details) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
Pending Merger (Details) $ / shares in Units, $ in Millions	Oct. 25, 2017 item	Sep. 30, 2017 USD ($)	Sep. 21, 2017 USD ($) $ / shares
Definitive merger agreement with Kuraray
Merger
Termination fee if merger agreement is terminated			$ 33.2
Merger related fees and expenses incurred		$ 3.3
Definitive merger agreement with Kuraray \| Investment banking agreement
Merger
Merger related fees and expenses incurred		$ 2.0
Contractual obligation			19.0
Closing of Pending Merger \| Definitive merger agreement with Kuraray \| Investment banking agreement
Merger
Contractual obligation			17.0
Announcement of the execution of the merger agreement \| Definitive merger agreement with Kuraray \| Investment banking agreement
Merger
Contractual obligation			$ 2.0
Calgon Carbon Corporation \| Kuraray Co., Ltd. (Kuraray)
Merger
Number of required closing conditions satisfied \| item	2
Calgon Carbon Corporation \| Kuraray Co., Ltd. (Kuraray) \| Pending satisfaction of closing conditions
Merger
Cash for outstanding common stock (in dollars per share) \| $ / shares			$ 21.50