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- References

No definition available.

Name:	ccmp_IncomeTaxHolidayAbstract
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Percentage applicable on federal statutory tax rate applicable for period 1.

No definition available.

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Percentage applicable on federal statutory tax rate applicable for period 2.

No definition available.

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Data Type:	num:percentItemType
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Percentage applicable on federal statutory tax rate for period 3.

No definition available.

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The tax holiday provides for a portion of the statutory rate during a certain period.

No definition available.

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The tax holiday provides for a portion of the statutory rate during a certain period.

No definition available.

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Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations pursuant to Tax Cuts and Jobs Act of 2017.

No definition available.

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Amount of reasonable estimate for income tax expense (benefit) for remeasurement of deferred tax from change in tax rate pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete.

No definition available.

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Amount of reasonable estimate for income tax expense (benefit) from effect of Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete.

No definition available.

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Amount of reasonable estimate for income tax expense from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete.

No definition available.

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The Company has been awarded a tax holiday in South Korea with respect to its manufacturing operations.

No definition available.

Name:	ccmp_TaxHolidayRatePercentage
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The transition tax on un-repatriated earnings of foreign subsidiaries payment period.

No definition available.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

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Amount of foreign earnings repatriated from subsidiaries outside the country of domicile.

No definition available.

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The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330215-122817

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Per share amount effect of the income tax benefit resulting from the income tax holidays granted by taxing jurisdictions.