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Revenue Recognition (Tables) | 3 Months Ended
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Dec. 31, 2023
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue |
Table 4.1: Revenue by Contract Type
| For the Three Months Ended
| December 31, 2023 |  | December 31, 2022
| (dollars in thousands)
Performance-based | $ | 704,711 |  |  | 53.1 | % |  | $ | 569,217 |  |  | 45.6 | %
Cost-plus | 342,015 |  |  | 25.8 | % |  | 347,319 |  |  | 27.8 | %
Fixed price | 176,677 |  |  | 13.3 | % |  | 175,073 |  |  | 14.0 | %
Time and materials | 103,638 |  |  | 7.8 | % |  | 157,637 |  |  | 12.6 | %
Total revenue | $ | 1,327,041 |  |  |  |  | $ | 1,249,246 |  |  |
Table 4.2: Revenue by Customer Type
| For the Three Months Ended
| December 31, 2023 |  | December 31, 2022
| (dollars in thousands)
U. S. federal government agencies | $ | 662,946 |  |  | 50.0 | % |  | $ | 603,918 |  |  | 48.3 | %
U.S. state government agencies | 486,943 |  |  | 36.7 | % |  | 437,362 |  |  | 35.0 | %
International government agencies | 155,612 |  |  | 11.7 | % |  | 181,760 |  |  | 14.5 | %
Other, including local municipalities and commercial customers | 21,540 |  |  | 1.6 | % |  | 26,206 |  |  | 2.1 | %
Total revenue | $ | 1,327,041 |  |  |  |  | $ | 1,249,246 |  |  |

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- 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 + Details
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