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Business Segments - Schedule of Summarized Financial Information of Reportable Segments (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |
Revenues | $ 2,287,623 | $ 2,056,889
Direct costs | 1,547,194 | 1,414,424
Indirect costs and selling expenses | 473,856 | 427,946
Depreciation and amortization | 54,298 | 34,678
Income from operations | 212,275 | 179,841
Capital expenditures | 17,014 | 11,476
Domestic |  |
Segment Reporting Information [Line Items] |  |
Revenues | 2,210,044 | 1,996,321
Domestic | Operating segments |  |
Segment Reporting Information [Line Items] |  |
Revenues | 2,210,043 | 1,996,321
Direct costs | 1,513,688 | 1,389,114
Indirect costs and selling expenses | 444,026 | 413,839
Depreciation and amortization | 52,895 | 33,670
Income from operations | 199,434 | 159,698
Capital expenditures | 15,189 | 10,802
International |  |
Segment Reporting Information [Line Items] |  |
Revenues | 77,579 | 60,568
International | Operating segments |  |
Segment Reporting Information [Line Items] |  |
Revenues | 77,580 | 60,568
Direct costs | 33,506 | 25,310
Indirect costs and selling expenses | 29,830 | 14,107
Depreciation and amortization | 1,403 | 1,008
Income from operations | 12,841 | 20,143
Capital expenditures | $ 1,825 | $ 674

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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
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