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Long-Term Debt (Amortization Of Debt Discount) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2012
Long-Term Debt [Abstract]
2013 (nine months)	$ 9,728
2014	11,421
Amount amortized during period, total	$ 21,149

X

- Definition

Debt Discount Future Amortization Expenses Remainder Of Fiscal Year

+ References

No definition available.

+ Details

Name:	caci_DebtDiscountFutureAmortizationExpensesRemainderOfFiscalYear
Namespace Prefix:	caci_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Debt Discount Future Amortization Expenses Total

+ References

No definition available.

+ Details

Name:	caci_DebtDiscountFutureAmortizationExpensesTotal
Namespace Prefix:	caci_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Debt Discount Future Amortization Expenses Year Two

+ References

No definition available.

+ Details

Name:	caci_DebtDiscountFutureAmortizationExpensesYearTwo
Namespace Prefix:	caci_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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