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Revenues (Tables)

12 Months Ended

Jun. 30, 2025

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregated Revenues

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

			Year Ended June 30,
			2025																		2024																		2023
			Domestic						International						Total						Domestic						International						Total						Domestic						International						Total
Cost-plus-fee			$	5,221,011					$	—					$	5,221,011					$	4,654,689					$	—					$	4,654,689					$	3,896,725					$	—					$	3,896,725
Fixed-price			2,112,490						159,112						2,271,602						1,950,286						140,893						2,091,179						1,888,414						135,554						2,023,968
Time-and-materials			1,036,860						98,351						1,135,211						827,770						86,194						913,964						727,799						54,054						781,853
Total			$	8,370,361					$	257,463					$	8,627,824					$	7,432,745					$	227,087					$	7,659,832					$	6,512,938					$	189,608					$	6,702,546

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

			Year Ended June 30,
			2025																		2024																		2023
			Domestic						International						Total						Domestic						International						Total						Domestic						International						Total
DoD			$	6,507,728					$	—					$	6,507,728					$	5,695,408					$	—					$	5,695,408					$	4,817,470					$	—					$	4,817,470
Federal civilian agencies			1,751,973						—						1,751,973						1,588,262						—						1,588,262						1,533,295						—						1,533,295
Commercial and other			110,660						257,463						368,123						149,075						227,087						376,162						162,173						189,608						351,781
Total			$	8,370,361					$	257,463					$	8,627,824					$	7,432,745					$	227,087					$	7,659,832					$	6,512,938					$	189,608					$	6,702,546

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

			Year Ended June 30,
			2025																		2024																		2023
			Domestic						International						Total						Domestic						International						Total						Domestic						International						Total
Prime contractor			$	7,553,566					$	230,342					$	7,783,908					$	6,649,114					$	200,735					$	6,849,849					$	5,801,840					$	171,860					$	5,973,700
Subcontractor			816,795						27,121						843,916						783,631						26,352						809,983						711,098						17,748						728,846
Total			$	8,370,361					$	257,463					$	8,627,824					$	7,432,745					$	227,087					$	7,659,832					$	6,512,938					$	189,608					$	6,702,546

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

			Year Ended June 30,
			2025																		2024																		2023
			Domestic						International						Total						Domestic						International						Total						Domestic						International						Total
Expertise			$	3,714,545					$	135,296					$	3,849,841					$	3,473,434					$	83,555					$	3,556,989					$	3,021,621					$	69,751					$	3,091,372
Technology			4,655,816						122,167						4,777,983						3,959,311						143,532						4,102,843						3,491,317						119,857						3,611,174
Total			$	8,370,361					$	257,463					$	8,627,824					$	7,432,745					$	227,087					$	7,659,832					$	6,512,938					$	189,608					$	6,702,546

Schedule of Contract Assets and Liabilities

Contract balances consisted of the following (dollars in thousands):

												Year Ended June 30,
Description of Contract Related Balance						Financial Statement Classification						2025						2024
Billed and billable receivables						Accounts receivable, net						$	1,098,237					$	885,552
Contract assets – current unbilled receivables						Accounts receivable, net						307,204						145,759
Contract assets – current costs to obtain						Prepaid expenses and other current assets						7,059						6,142
Contract assets – noncurrent unbilled receivables						Accounts receivable, long-term						14,694						13,311
Contract assets – noncurrent costs to obtain						Other long-term assets						13,897						12,310
Contract liabilities – current deferred revenue and other contract liabilities						Other accrued expenses and current liabilities						(190,400)						(139,745)
Contract liabilities – noncurrent deferred revenue and other contract liabilities						Other long-term liabilities						(6,014)						(4,607)

X

- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-10

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X

- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-5

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