Other Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 05, 2024 |
Sep. 30, 2023 |
|
| Accrued expenses and other current liabilities | ||||||
| Accrued salaries and benefits | $ 640,400 | $ 640,400 | $ 599,800 | |||
| Accrued contract costs | 1,389,700 | 1,389,700 | 1,340,400 | |||
| Other accrued expenses | 384,200 | 384,200 | 347,300 | |||
| Total | 2,414,250 | 2,414,250 | 2,287,546 | |||
| Restructuring costs | 29,025 | $ 9,115 | 80,670 | $ 50,547 | ||
| Accrued restructuring expenses | 22,400 | $ 28,300 | 22,400 | 28,300 | ||
| Dividend paid per share in cash | $ 0.22 | |||||
| Accrued and unpaid dividend | 32,500 | 32,500 | ||||
| Labor-related costs | ||||||
| Accrued expenses and other current liabilities | ||||||
| Restructuring costs | 15,100 | 20,300 | ||||
| Non-labor | ||||||
| Accrued expenses and other current liabilities | ||||||
| Restructuring costs | 65,600 | $ 30,200 | ||||
| Professional liability accrual | ||||||
| Accrued expenses and other current liabilities | ||||||
| Accrued contract costs | $ 824,100 | $ 824,100 | $ 809,600 | |||