Name:	ccmp_CompanysMatchingContributionOnParticipantsFirstFourPercentContribution
Namespace Prefix:	ccmp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Company's maximum matching contribution to the qualified defined contribution plan on participants' next two percent contribution.

No definition available.

Name:	ccmp_CompanysMatchingContributionOnParticipantsNextTwoPercentContribution
Namespace Prefix:	ccmp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Maximum percentage of eligible compensation participants may contribute to the qualified defined contribution plan.

No definition available.

Name:	ccmp_MaximumParticipantsContributionsAsPercentageOfTheirEligibleCompensation
Namespace Prefix:	ccmp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of company's contribution vested at the time of contribution.

No definition available.

Name:	ccmp_PercentageOfCompanysContributionVestedAtTimeOfContribution
Namespace Prefix:	ccmp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of participant's contribution to the qualified defined contribution plan subject to company's fifty percent matching contribution.

No definition available.

Name:	ccmp_PercentageOfParticipantsContributionSubjectToCompanysFifityPercentMatchingContribution
Namespace Prefix:	ccmp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of participant's contribution to the qualified defined contribution plan subject to company's one hundred percent matching contribution.

No definition available.

Name:	ccmp_PercentageOfParticipantsContributionSubjectToCompanysOneHundredPercentMatchingContribution
Namespace Prefix:	ccmp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

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

The amount of the cost recognized during the period for defined contribution plans.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 11

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.