Related Party Transactions (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2025 |
Mar. 31, 2024 |
Sep. 30, 2024 |
|
| Related Party Transactions [Abstract] | |||||
| Master Service Agreement Fees, Related Party | $ 0.7 | $ 0.8 | $ 1.6 | $ 1.7 | |
| Purchases from related party | 20.8 | $ 1.9 | 27.1 | $ 1.9 | |
| Accounts Payable, related party | $ 12.6 | $ 12.6 | $ 1.5 | ||