Quarterly report [Sections 13 or 15(d)]

Business Segments - Financial Information by Segment (Details)

v3.25.4
Business Segments - Financial Information by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Financial information for each of the Company's business segments    
Revenue $ 1,345,046 $ 1,402,675
Cost of revenue 1,026,376 1,101,118
Gross profit 318,670 301,557
Other segment items 161,031 153,491
Segment operating income/(loss) 157,639 148,066
Divestiture-related gains/charges 8,985 (38,341)
Amortization of intangible assets (20,300) (23,035)
Operating income 146,210 86,787
Depreciation and amortization: 12,889 8,455
Operating Segments | U.S. Federal Services    
Financial information for each of the Company's business segments    
Revenue 786,601 780,655
Cost of revenue $ 571,666 $ 607,340
Cost of revenue (as a percent) 72.70% 77.80%
Gross profit $ 214,935 $ 173,315
Gross profit (as a percent) 27.30% 22.20%
Other segment items $ 85,202 $ 74,215
Other segment items (as a percent) 10.80% 9.50%
Segment operating income/(loss) $ 129,733 $ 99,100
Segment operating income (as a percent) 16.50% 12.70%
Depreciation and amortization: $ 7,115 $ 2,851
Depreciation and amortization (as a percent) 0.90% 0.40%
Operating Segments | U.S. Services    
Financial information for each of the Company's business segments    
Revenue $ 415,248 $ 452,250
Cost of revenue $ 330,854 $ 357,246
Cost of revenue (as a percent) 79.70% 79.00%
Gross profit $ 84,394 $ 95,004
Gross profit (as a percent) 20.30% 21.00%
Other segment items $ 55,108 $ 54,158
Other segment items (as a percent) 13.30% 12.00%
Segment operating income/(loss) $ 29,286 $ 40,846
Segment operating income (as a percent) 7.10% 9.00%
Depreciation and amortization: $ 4,222 $ 3,811
Depreciation and amortization (as a percent) 1.00% 0.80%
Operating Segments | Outside the U.S.    
Financial information for each of the Company's business segments    
Revenue $ 143,197 $ 169,770
Cost of revenue $ 123,856 $ 136,532
Cost of revenue (as a percent) 86.50% 80.40%
Gross profit $ 19,341 $ 33,238
Gross profit (as a percent) 13.50% 19.60%
Other segment items $ 20,721 $ 25,118
Other segment items (as a percent) 14.50% 14.80%
Segment operating income/(loss) $ (1,380) $ 8,120
Segment operating income (as a percent) (1.00%) 4.80%
Depreciation and amortization: $ 1,552 $ 1,793
Depreciation and amortization (as a percent) 1.10% 1.10%
Segment Reconciling Items    
Financial information for each of the Company's business segments    
Divestiture-related gains/charges $ 8,985 $ (38,341)
Other (114) 97
Amortization of intangible assets $ (20,300) $ (23,035)