CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Condensed Consolidated Statements Of Operations [Abstract]
Revenue	$ 864,265	$ 931,236
Costs of revenue:
Direct costs	601,422	645,637
Indirect costs and selling expenses	188,710	207,623
Depreciation and amortization	12,951	13,239
Total costs of revenue	803,083	866,499
Income from operations	61,182	64,737
Interest expense and other, net	7,388	6,782
Income before income taxes	53,794	57,955
Income taxes	20,402	21,965
Net income including portion attributable to noncontrolling interest in earnings of joint venture	33,392	35,990
Noncontrolling interest in earnings of joint venture	(400)	(282)
Net income attributable to CACI	$ 32,992	$ 35,708
Basic earnings per share (in dollars per share)	$ 1.42	$ 1.55
Diluted earnings per share (in dollars per share)	$ 1.33	$ 1.49
Weighted-average basic shares outstanding (in shares)	23,314	23,032
Weighted-average diluted shares outstanding (in shares)	24,835	23,980