CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 30,338	$ 24,636	$ 64,140	$ 55,893
Other comprehensive (loss) income:
Foreign currency translation adjustment	(3,337)	(5,832)	(7,747)	(12,615)
Change in fair value of interest rate swap agreements, net of tax	3,832	(2,621)	798	(818)
Other comprehensive (loss) income, net of tax	495	(8,453)	(6,949)	(13,433)
Comprehensive income	30,833	16,183	57,191	42,460
Noncontrolling interest		6		(121)
Comprehensive income attributable to CACI	$ 30,833	$ 16,189	$ 57,191	$ 42,339