Long Term Debt (Amortization Of Debt Discount) (Details) (USD $) In Thousands	12 Months Ended
Jun. 30, 2011
Long Term Debt
2012	$ 12,024
2013	12,868
2014	11,421
Amount amortized during period, total	$ 36,313

Name:

caci_DebtDiscountFutureAmortizationExpensesYearThree

Namespace Prefix:

caci

Data Type:

xbrli:monetaryItemType

Balance Type:

debit

Period Type:

duration