Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Related Party Transactions [Abstract]
Master Service Agreement Fees, Related Party	$ 0.8	$ 1.0	$ 1.7	$ 2.3
Purchases from related party	1.9		1.9
Start-up costs reimbursable to related party			1.0
Accounts Payable, related party	$ 1.5		$ 1.5		$ 2.5