CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Total CACI Shareholders’ Equity	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interest
Beginning balance (in shares) at Jun. 30, 2022			42,820,000
Beginning balance (in shares) at Jun. 30, 2022							19,404,000
Beginning balance at Jun. 30, 2022	$ 3,053,543	$ 3,053,408	$ 4,282	$ 571,650	$ 3,555,881	$ (31,076)	$ (1,047,329)	$ 135
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	89,125	89,125			89,125
Stock-based compensation expense	8,439	8,439		8,439
Tax withholdings on restricted share vestings (in shares)			6,000
Tax withholdings on restricted share vestings	(435)	(435)	$ 1	(436)
Other comprehensive loss, net of tax	(1,960)	(1,960)				(1,960)
Repurchases of common stock	(2,647)	(2,647)		(182)			$ (2,465)
Repurchases of common stock (in shares)							9,000
Treasury stock issued under stock purchase plans	2,505	2,505		40			$ 2,465
Treasury stock issued under stock purchase plans (in shares)							(9,000)
Ending balance (in shares) at Sep. 30, 2022							19,404,000
Ending balance (in shares) at Sep. 30, 2022			42,826,000
Ending balance at Sep. 30, 2022	$ 3,148,570	3,148,435	$ 4,283	579,511	3,645,006	(33,036)	$ (1,047,329)	135
Beginning balance (in shares) at Jun. 30, 2023	42,923,000		42,923,000
Beginning balance (in shares) at Jun. 30, 2023	20,126,000						20,126,000
Beginning balance at Jun. 30, 2023	$ 3,224,334	3,224,199	$ 4,292	546,334	3,940,616	(5,051)	$ (1,261,992)	135
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	86,047	86,047			86,047
Stock-based compensation expense	10,024	10,024		10,024
Tax withholdings on restricted share vestings (in shares)			6,000
Tax withholdings on restricted share vestings	(597)	(597)	$ 1	(598)
Other comprehensive loss, net of tax	(3,769)	(3,769)				(3,769)
Repurchases of common stock	(154,657)	(154,657)		39,087			$ (193,744)
Repurchases of common stock (in shares)							585,000
Treasury stock issued under stock purchase plans	$ 2,651	2,651		38			$ 2,613
Treasury stock issued under stock purchase plans (in shares)							(8,000)
Ending balance (in shares) at Sep. 30, 2023	20,703,000						20,703,000
Ending balance (in shares) at Sep. 30, 2023	42,929,000		42,929,000
Ending balance at Sep. 30, 2023	$ 3,164,033	$ 3,163,898	$ 4,293	$ 594,885	$ 4,026,663	$ (8,820)	$ (1,453,123)	$ 135