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Sales of Receivables - Summary of MARPA Activity (Parentheticals) (Detail) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021
Transfers And Servicing Of Financial Assets [Abstract] |  |
Cash provided (used) by MARPA | $ (24.2) | $ (18.0)

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- Definition Cash provided (used) by MARPA. + References No definition available. + Details
Name: | caci_CashProvidedUsedByMARPA
Namespace Prefix: | caci_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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