Leases - Schedule of Lease Cost (Details) - USD ($) $ in Millions	2 Months Ended	11 Months Ended	12 Months Ended
	Dec. 31, 2023	Nov. 15, 2023	Dec. 31, 2024	Dec. 31, 2022
Leases [Abstract]
Operating lease costs	$ 0.7	$ 5.2	$ 5.2	$ 8.1
Variable lease costs	0.5	3.3	2.3	4.7
Sublease income	(0.1)	(0.9)	(1.0)	(1.0)
Total lease costs	$ 1.1	$ 7.6	$ 6.5	$ 11.8