Business Segment Information - Schedule of Selected Financial Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021	Oct. 31, 2021
Segment Reporting Information [Line Items]
Net sales	$ 594.8	$ 593.3	$ 1,708.1	$ 1,790.9
Depreciation and amortization	6.9	7.6	25.2	24.2
Capital expenditures	7.4	5.3	15.9	13.9
Total assets	1,332.2	1,252.9	1,332.2	1,252.9	$ 1,238.3
Operating Segment [Member] | Fire & Emergency [Member]
Segment Reporting Information [Line Items]
Net sales	230.1	269.5	712.5	857.7
Depreciation and amortization	2.8	2.9	11.2	9.0
Capital expenditures	3.3	2.8	7.5	7.7
Total assets	684.8	676.7	684.8	676.7
Adjusted EBITDA	1.0	15.8	0.6	47.6
Operating Segment [Member] | Commercial [Member]
Segment Reporting Information [Line Items]
Net sales	111.0	111.3	299.2	292.8
Depreciation and amortization	0.7	0.7	2.2	2.2
Capital expenditures	0.5		1.5	1.1
Total assets	234.7	194.0	234.7	194.0
Adjusted EBITDA	6.8	9.7	19.0	25.1
Operating Segment [Member] | Recreation [Member]
Segment Reporting Information [Line Items]
Net sales	254.1	212.5	697.7	640.5
Depreciation and amortization	2.8	3.5	10.1	10.7
Capital expenditures	2.6	1.6	5.2	2.9
Total assets	354.7	314.0	354.7	314.0
Adjusted EBITDA	29.8	24.1	75.6	64.3
Corporate, Other and Elims [Member]
Segment Reporting Information [Line Items]
Net sales	(0.4)		(1.3)	(0.1)
Depreciation and amortization	0.6	0.5	1.7	2.3
Capital expenditures	1.0	0.9	1.7	2.2
Total assets	58.0	68.2	58.0	68.2
Adjusted EBITDA	$ (8.1)	$ (8.0)	$ (23.6)	$ (26.6)