Segment Reporting (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Segment Reporting [Abstract]
Number of operating segments | segment	3
Segment Reporting Information [Line Items]
Sales	$ 8,934.4	$ 8,589.0	$ 7,439.2
Gross profit	1,959.9	1,959.5	1,750.9
Boats
Segment Reporting Information [Line Items]
Sales	765.4	989.4	760.2
Off-Road Segment
Segment Reporting Information [Line Items]
Sales	6,984.4	6,436.2	5,574.6
On-Road Segment
Segment Reporting Information [Line Items]
Sales	1,184.6	1,163.4	1,031.8
Operating Segments [Member] | Boats
Segment Reporting Information [Line Items]
Sales	765.4	989.4	760.2
Gross profit	169.0	222.5	170.6
Operating Segments [Member] | Off-Road Segment
Segment Reporting Information [Line Items]
Sales	6,984.4	6,436.2	5,574.6
Gross profit	1,531.6	1,523.4	1,329.8
Operating Segments [Member] | On-Road Segment
Segment Reporting Information [Line Items]
Sales	1,184.6	1,163.4	1,031.8
Gross profit	240.4	206.3	160.7
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Sales	0.0	0.0	72.6
Gross profit	$ 18.9	$ 7.3	$ 89.8