Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2021	Oct. 31, 2020
Disaggregation Of Revenue [Line Items]
Contract asset	$ 20.5	$ 16.9
Contract liability	36.7	41.9
Transferred to accounts receivable	5.2	5.9
Service Agreements [Member]
Disaggregation Of Revenue [Line Items]
Remaining performance obligations	125.9
Licensing Agreements [Member]
Disaggregation Of Revenue [Line Items]
Remaining performance obligations	22.2
Advanced Technologies Contracts [Member]
Disaggregation Of Revenue [Line Items]
Remaining performance obligations	40.8
Posco Energy [Member]
Disaggregation Of Revenue [Line Items]
Deferred revenue	$ 22.2	$ 22.2

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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