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Fair Value of Financial Instruments (Detail Textuals)	9 Months Ended
	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