Represents information about average share price determination period.

No definition available.

Name:	caci_AverageSharePriceDeterminationPeriod
Namespace Prefix:	caci_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Average share price performance condition, percentage by which the average share price of the Company’s stock in years one, two and three exceeds the average share price at the grant date.

+ References

No definition available.

+ Details

Name:	caci_AverageSharePricePerformanceConditionPercentage
Namespace Prefix:	caci_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Cumulative equity instruments awarded.

+ References

No definition available.

+ Details

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

- Definition

Cumulative equity instruments forfeited.

+ References

No definition available.

+ Details

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

- Definition

EBITDA target performance condition, achievement of cumulative EBITDA target period.

+ References

No definition available.

+ Details

Name:	caci_EBITDATargetPerformanceConditionYears
Namespace Prefix:	caci_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Excess tax benefit from share based compensation operating activities.

+ References

No definition available.

+ Details

Name:	caci_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities1
Namespace Prefix:	caci_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum earned award percentage of target award.

+ References

No definition available.

+ Details

Name:	caci_MaximumEarnedAwardPercentageOfTarget
Namespace Prefix:	caci_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Service vesting condition which stipulates that 50 percent of the earned award will vest after four years.

+ References

No definition available.

+ Details

Name:	caci_PercentageOfEarnedAwardVestingAfterFourYears
Namespace Prefix:	caci_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Service vesting condition which stipulates that 50 percent of the earned award will vest after three years.

+ References

No definition available.

+ Details

Name:	caci_PercentageOfEarnedAwardVestingAfterThreeYears
Namespace Prefix:	caci_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period in which equity awards can be granted under stock incentive plan.

+ References

No definition available.

+ Details

Name:	caci_StockIncentivePlanExpirationPeriod
Namespace Prefix:	caci_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

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

- Details

Name:	us-gaap_AwardTypeAxis=caci_RestrictedStockUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=caci_TwoThousandSixStockIncentivePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=caci_TwoThousandSixteenIncentiveCompensationPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Stock-Based Compensation (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
Stock-Based Compensation (Details) - USD ($) $ in Millions	Oct. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Excess tax benefits recognized		$ 5.2	$ 7.3	$ 13.5
RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Period to establish average share price for performance measurement		90 days
EBITDA target performance condition, years	3 years
Non-performance-based awards vesting period	3 years
Average share price performance condition, percentage		100.00%
Maximum earned award, percentage of target award		200.00%
Percentage of earned award vesting after three years		50.00%
Percentage of earned award vesting after four years		50.00%
2006 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock incentive plan, expiration period		10 years
2016 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for grants		2,400,000
Cumulative equity instruments awarded		1,300,717
Cumulative equity instruments forfeited		247,981