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Fair Value of Financial Instruments (Detail Textuals) | 9 Months Ended
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Mar. 31, 2016
Fair Value Disclosures [Abstract] |
Business combination contingent consideration period | two and three year periods

X
- Definition Represents business combination contingent consideration period for achieving earnings targets. + References No definition available. + Details
Name: | caci_BusinessCombinationContingentConsiderationPeriod
Namespace Prefix: | caci_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration