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Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions	Jul. 31, 2021	Oct. 31, 2020
Disaggregation Of Revenue [Line Items]
Contract asset	$ 22.3	$ 16.9
Contract liability	37.4	$ 41.9
Service agreements
Disaggregation Of Revenue [Line Items]
Remaining performance obligations	127.0
Licensing agreements
Disaggregation Of Revenue [Line Items]
Remaining performance obligations	22.2
Advanced technologies contracts
Disaggregation Of Revenue [Line Items]
Remaining performance obligations	40.0
Posco Energy
Disaggregation Of Revenue [Line Items]
Deferred revenue	$ 22.2

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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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