Warrants - Warrants Rollforward (Details) - USD ($) $ in Millions			12 Months Ended
	Jan. 31, 2022	Aug. 10, 2021	Oct. 31, 2022	Oct. 31, 2021
Number of warrants
Warrants, beginning balance (in shares)			22,999,894	0
Assumption of warrants - Business Combination (in shares)		23,000,000		22,999,994
Cash exercises (in shares)			(9,578)	(100)
Cashless exercises (in shares)	(22,540,651)		(22,540,651)
Redemptions (in shares)	(449,665)		(449,665)
Warrants, ending balance (in shares)			0	22,999,894
Movement In Warrants Outstanding [Roll Forward]
Warrants outstanding, beginning of the year			$ 82.1	$ 0.0
Assumption of warrants - Business Combination (refer to Note 1)		$ 48.3		48.3
Cashless exercises			(45.9)
Fair value (gain) loss on warrants			(36.2)	33.8
Warrants outstanding, end of the year		$ 48.3	$ 0.0	$ 82.1