CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Consolidated Statements Of Comprehensive Income [Abstract]
Net income including portion attributable to noncontrolling interest in earnings of joint venture	$ 31,009	$ 38,487	$ 99,311	$ 114,457
Foreign currency translation adjustment	1,062	(6,608)	10,517	(2,768)
Change in fair value of interest rate swap agreements, net	(1,175)	(40)	(1,370)	(666)
Effects of post-retirement adjustments		390	208	390
Comprehensive income including portion attributable to noncontrolling interest in earnings of joint venture	30,896	32,229	108,666	111,413
Noncontrolling interest in earnings of joint venture	(181)	(120)	(529)	(706)
Comprehensive income attributable to CACI	$ 30,715	$ 32,109	$ 108,137	$ 110,707