Leases - Schedule of Supplemental Cash Flow (Details) - USD ($) $ in Millions	2 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Cash paid for amounts related to lease liabilities:
Operating cash flows from operating leases	$ 1.4	$ 10.8	$ 7.2	$ 1.3
Operating cash flows from finance leases	0.0	0.0	0.0	0.0
Repayment of lease principal	0.0	0.0	0.0	0.0
Recognition of ROU assets and lease liabilities for new operating leases	1.4	18.4	28.4	16.4
Recognition of ROU assets and lease liabilities for new finance leases	$ 0.0	$ 2.2	$ 0.0	$ 0.0