Recent Accounting Pronouncements (Narrative) (Detail)	3 Months Ended
Sep. 30, 2012
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Threshold likelihood of qualitative factors for indefinite lived intangible assets impairment test, percentage	50.00%

Threshold Likelihood Of Qualitative Factors For Determining Whether To Test For Indefinite Lived Intangible Assets Impairment Percentage

No definition available.

Name:	iivi_ThresholdLikelihoodOfQualitativeFactorsForDeterminingWhetherToTestForIndefiniteLivedIntangibleAssetsImpairmentPercentage
Namespace Prefix:	iivi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration