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Revenue Recognition (Tables) | 12 Months Ended
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Sep. 30, 2022
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue |
Table 4.1: Revenue by Service Type
| For the Year Ended September 30,
| 2022 |  | % |  | 2021 |  | % |  | 2020 |  | %
| (dollars in thousands)
Program Operations | $ | 2,596,801 |  |  | 56.1 | % |  | $ | 2,755,820 |  |  | 64.8 | % |  | $ | 2,395,618 |  |  | 69.2 | %
Clinical Services | 1,176,081 |  |  | 25.4 | % |  | 699,424 |  |  | 16.4 | % |  | 539,018 |  |  | 15.6 | %
Employment & Other | 551,755 |  |  | 11.9 | % |  | 463,695 |  |  | 10.9 | % |  | 318,431 |  |  | 9.2 | %
Technology Solutions | 306,381 |  |  | 6.6 | % |  | 335,546 |  |  | 7.9 | % |  | 208,470 |  |  | 6.0 | %
Total revenue | $ | 4,631,018 |  |  |  |  | $ | 4,254,485 |  |  |  |  | $ | 3,461,537 |  |  |
During fiscal year 2022, management changed the manner in which the products and services across our segments are viewed. Accordingly, the business lines have been updated, and historical balances adjusted to reflect our updated view of the business.
Table 4.2: Revenue by Contract Type
| For the Year Ended September 30,
| 2022 |  | % |  | 2021 |  | % |  | 2020 |  | %
| (dollars in thousands)
Performance-based | $ | 2,091,608 |  |  | 45.2 | % |  | $ | 1,416,562 |  |  | 33.3 | % |  | $ | 1,109,153 |  |  | 32.1 | %
Cost-plus | 1,248,759 |  |  | 27.0 | % |  | 1,237,995 |  |  | 29.1 | % |  | 1,578,912 |  |  | 45.6 | %
Fixed price | 627,402 |  |  | 13.5 | % |  | 553,645 |  |  | 13.0 | % |  | 471,505 |  |  | 13.6 | %
Time and materials | 663,249 |  |  | 14.3 | % |  | 1,046,283 |  |  | 24.6 | % |  | 301,967 |  |  | 8.7 | %
Total revenue | $ | 4,631,018 |  |  |  |  | $ | 4,254,485 |  |  |  |  | $ | 3,461,537 |  |  |
Table 4.3: Revenue by Customer Type
| For the Year Ended September 30,
| 2022 |  | % |  | 2021 |  | % |  | 2020 |  | %
| (dollars in thousands)
U. S. federal government agencies | $ | 2,189,303 |  |  | 47.3 | % |  | $ | 1,805,131 |  |  | 42.4 | % |  | $ | 1,559,165 |  |  | 45.1 | %
U.S. state government agencies | 1,605,457 |  |  | 34.7 | % |  | 1,654,555 |  |  | 38.9 | % |  | 1,344,227 |  |  | 38.8 | %
International government agencies | 722,192 |  |  | 15.6 | % |  | 663,180 |  |  | 15.6 | % |  | 467,185 |  |  | 13.5 | %
Other, including local municipalities and commercial customers | 114,066 |  |  | 2.4 | % |  | 131,619 |  |  | 3.1 | % |  | 90,960 |  |  | 2.6 | %
Total revenue | $ | 4,631,018 |  |  |  |  | $ | 4,254,485 |  |  |  |  | $ | 3,461,537 |  |  |
Table 4.4: Revenue by Geography
| For the Year Ended September 30,
| 2022 |  | % |  | 2021 |  | % |  | 2020 |  | %
| (dollars in thousands)
United States | $ | 3,867,354 |  |  | 83.5 | % |  | $ | 3,555,394 |  |  | 83.6 | % |  | $ | 2,962,611 |  |  | 85.6 | %
United Kingdom | 410,587 |  |  | 8.9 | % |  | 286,432 |  |  | 6.7 | % |  | 246,334 |  |  | 7.1 | %
Australia | 173,078 |  |  | 3.7 | % |  | 244,995 |  |  | 5.8 | % |  | 147,156 |  |  | 4.3 | %
Rest of world | 179,999 |  |  | 3.9 | % |  | 167,664 |  |  | 3.9 | % |  | 105,436 |  |  | 3.0 | %
Total revenue | $ | 4,631,018 |  |  |  |  | $ | 4,254,485 |  |  |  |  | $ | 3,461,537 |  |  |

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