Name:	caci_ShareBasedCompensationArrangementByShareBasedPaymentAwardAndOptionsForfeitedInPeriod
Namespace Prefix:	caci_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Represents net number of awards share options (or share units) granted during the period.

No definition available.

Name:	caci_ShareBasedCompensationArrangementByShareBasedPaymentAwardAndOptionsGrantsInPeriod
Namespace Prefix:	caci_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Represents number of awards and share options (or share units) exercised during the period.

No definition available.

Name:	caci_ShareBasedCompensationArrangementByShareBasedPaymentEquityInstrumentsAwardAndOptionsExercisedInPeriod
Namespace Prefix:	caci_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Weighted average fair value as of the grant date of equity-based award and options plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

No definition available.

Name:	caci_ShareBasedCompensationArrangementByShareBasedPaymentEquityInstrumentsAwardAndOptionsForfeituresWeightedAverageGrantDateFairValue
Namespace Prefix:	caci_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

The weighted average fair value at grant date for nonvested equity-based awards and options issued during the period.

No definition available.

Name:	caci_ShareBasedCompensationArrangementByShareBasedPaymentEquityInstrumentsAwardAndOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	caci_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

The weighted average fair value of nonvested awards and options on equity-based plans excluding option plans for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

No definition available.

Name:	caci_ShareBasedCompensationArrangementByShareBasedPaymentEquityInstrumentsAwardAndOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix:	caci_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Share Based Compensation Arrangement By Share Based Payment Equity Instruments Award And Options Nonvested Weighted Average Grant Date Fair Value.

No definition available.

Name:	caci_ShareBasedCompensationArrangementByShareBasedPaymentEquityInstrumentsAwardAndOptionsNonvestedWeightedAverageGrantDateFairValueRollForward
Namespace Prefix:	caci_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The weighted average fair value as of grant date pertaining to an equity-based award and options for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

No definition available.

Name:	caci_ShareBasedCompensationArrangementByShareBasedPaymentEquityInstrumentsAwardAndOptionsVestedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	caci_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

The number of non-vested equity-based payment instruments, including stock awards (or unit) options, that validly exist and are outstanding as of the balance sheet date.

No definition available.

Name:	caci_ShareBasedCompensationArrangementByShareBasedPaymentEquityInstrumentsAwardsAndOptionsNonvestedNumber
Namespace Prefix:	caci_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Share Based Compensation Arrangement By Share Based Payment Equity Instruments Awards And Options Nonvested.

No definition available.

Name:	caci_ShareBasedCompensationArrangementByShareBasedPaymentEquityInstrumentsAwardsAndOptionsNonvestedRollForward
Namespace Prefix:	caci_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Number of shares under non-option equity instrument agreements that were either cancelled or expired.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Net number of non-option equity instruments granted to participants.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.