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Fair value of long-term debt (Tables)
6 Months Ended
Apr. 30, 2023
Fair Value of Long-Term Debt [Abstract]  
Schedule of estimated fair value and carrying value of long-term debt
($ in Millions)   April 30, 2023   October 31, 2022
         
Fair Value   $134.1   $132.2
         
Carrying Value, Net $137.2   $138.1