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Revenue Recognition - Contract Balances (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Oct. 31, 2022 | Oct. 31, 2021 | Jan. 31, 2022
Disaggregation Of Revenue [Line Items] |  |  |
Contract asset | $ 20.7 | $ 20.5 |
Long-term | 9.7 | 11.6 |
Transferred to accounts receivable | 5.3 | 5.2 |
Contract liability | $ 25.4 | 36.7 |
Posco Energy |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Deferred revenue |  | $ 22.2 | $ 22.2

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