CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements Of Comprehensive Income [Abstract]
Net income including portion attributable to noncontrolling interest in earnings of joint venture	$ 34,910	$ 39,980	$ 68,302	$ 75,970
Foreign currency translation adjustment	2,659	295	9,455	3,840
Change in fair value of interest rate swap agreements, net	36	(36)	(195)	(626)
Effects of post-retirement adjustments			208
Comprehensive income including portion attributable to noncontrolling interest in earnings of joint venture	37,605	40,239	77,770	79,184
Noncontrolling interest in earnings of joint venture	52	(304)	(348)	(586)
Comprehensive income attributable to CACI	$ 37,657	$ 39,935	$ 77,422	$ 78,598