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Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details)
$ in Millions
12 Months Ended
Oct. 31, 2023
USD ($)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]  
Balance at the beginning of the period $ 3.3
Increase as a result of tax positions taken during a prior period 0.2
Increase as a result of tax positions taken during the current period 0.6
Reductions as a result of statute of limitations lapses (0.4)
Balance at the end of the period $ 3.7