Revenues (Tables)

12 Months Ended

Jun. 30, 2023

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregated Revenues

Disaggregated revenues by contract type were as follows (in thousands):

	Year Ended June 30, 2023						Year Ended June 30, 2022						Year Ended June 30, 2021
	Domestic		International		Total		Domestic		International		Total		Domestic		International		Total
Cost-plus-fee	$	3,896,725	$	—	$	3,896,725	$	3,632,359	$	—	$	3,632,359	$	3,504,838	$	—	$	3,504,838
Fixed-price	1,888,414		135,554		2,023,968		1,690,480		132,741		1,823,221		1,651,343		118,498		1,769,841
Time-and-materials	727,799		54,054		781,853		688,220		59,117		747,337		712,211		57,245		769,456
Total	$	6,512,938	$	189,608	$	6,702,546	$	6,011,059	$	191,858	$	6,202,917	$	5,868,392	$	175,743	$	6,044,135

Disaggregated revenues by customer type were as follows (in thousands):

	Year Ended June 30, 2023						Year Ended June 30, 2022						Year Ended June 30, 2021
	Domestic		International		Total		Domestic		International		Total		Domestic		International		Total
Department of Defense	$	4,817,470	$	—	$	4,817,470	$	4,331,327	$	—	$	4,331,327	$	4,185,292	$	—	$	4,185,292
Federal civilian agencies	1,533,295		—		1,533,295		1,549,791		—		1,549,791		1,585,672		—		1,585,672
Commercial and other	162,173		189,608		351,781		129,941		191,858		321,799		97,428		175,743		273,171
Total	$	6,512,938	$	189,608	$	6,702,546	$	6,011,059	$	191,858	$	6,202,917	$	5,868,392	$	175,743	$	6,044,135

Disaggregated revenues by prime vs. subcontractor were as follows (in thousands):

	Year Ended June 30, 2023						Year Ended June 30, 2022						Year Ended June 30, 2021
	Domestic		International		Total		Domestic		International		Total		Domestic		International		Total
Prime contractor	$	5,801,840	$	171,860	$	5,973,700	$	5,389,870	$	175,052	$	5,564,922	$	5,284,761	$	164,829	$	5,449,590
Subcontractor	711,098		17,748		728,846		621,189		16,806		637,995		583,631		10,914		594,545
Total	$	6,512,938	$	189,608	$	6,702,546	$	6,011,059	$	191,858	$	6,202,917	$	5,868,392	$	175,743	$	6,044,135

Disaggregated revenues by Expertise or Technology were as follows (in thousands):

	Year Ended June 30, 2023						Year Ended June 30, 2022						Year Ended June 30, 2021
	Domestic		International		Total		Domestic		International		Total		Domestic		International		Total
Expertise	$	3,021,621	$	69,751	$	3,091,372	$	2,796,038	$	73,279	$	2,869,317	$	2,901,204	$	71,762	$	2,972,966
Technology	3,491,317		119,857		3,611,174		3,215,021		118,579		3,333,600		2,967,188		103,981		3,071,169
Total	$	6,512,938	$	189,608	$	6,702,546	$	6,011,059	$	191,858	$	6,202,917	$	5,868,392	$	175,743	$	6,044,135

Contract Assets and Liabilities

Contract balances consisted of the following (in thousands):

Description of Contract Related Balance	Financial Statement Classification	June 30, 2023		June 30, 2022
Billed and billable receivables	Accounts receivable, net	$	763,547	$	800,597
Contract assets – current unbilled receivables	Accounts receivable, net	131,399		125,547
Contract assets – current costs to obtain	Prepaid expenses and other current assets	5,163		5,167
Contract assets – noncurrent unbilled receivables	Accounts receivable, long-term	11,857		10,199
Contract assets – noncurrent costs to obtain	Other long-term assets	8,294		10,703
Contract liabilities – current deferred revenue and other contract liabilities	Other accrued expenses and current liabilities	(138,469)		(84,810)
Contract liabilities – noncurrent deferred revenue and other contract liabilities	Other long-term liabilities	(5,522)		(7,552)