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Restructuring and Other Related Charges - Schedule of Pre-tax Impairment and Restructuring Costs by Category and Segment (Detail) (Detail) - Fire & Emergency [Member] - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jul. 31, 2022
Jul. 31, 2022
Restructuring Cost And Reserve [Line Items]    
Pre-tax impairment and restructuring costs $ 2.3 $ 8.9
Employee Severance and Termination Benefits [Member]    
Restructuring Cost And Reserve [Line Items]    
Pre-tax impairment and restructuring costs 0.2 4.3
Contract Termination and Other Costs [Member]    
Restructuring Cost And Reserve [Line Items]    
Pre-tax impairment and restructuring costs $ 2.1 $ 4.6