Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill, Gross	$ 659,800	$ 665,400	$ 659,800	$ 667,600	$ 659,900
Goodwill, Impairment Loss	(270,300)		(270,300)
Accumulated goodwill impairment losses	(270,300)	(270,300)	(270,300)	(270,300)
Currency translation effect on foreign goodwill balances		(2,200)	(100)
Goodwill	389,500	395,100	389,500	397,300	659,900
ORV/Snowmobiles
Goodwill [Roll Forward]
Goodwill, Gross	71,700	73,100	71,700	72,900	72,000
Currency translation effect on foreign goodwill balances		200	(300)
Goodwill	71,700	73,100	71,700	72,900	72,000
Motorcycles
Goodwill [Roll Forward]
Goodwill, Gross	5,200	5,200	5,200	5,200	5,200
Goodwill	5,200	5,200	5,200	5,200	5,200
Global Adjacent Markets
Goodwill [Roll Forward]
Goodwill, Gross	85,500	89,700	85,500	92,100	85,200
Currency translation effect on foreign goodwill balances		(2,400)	300
Goodwill	85,500	89,700	85,500	92,100	85,200
Aftermarket
Goodwill [Roll Forward]
Goodwill, Gross	270,300	270,300	270,300	270,300	270,400
Goodwill, Impairment Loss			(270,300)
Accumulated goodwill impairment losses	(270,300)	(270,300)	(270,300)	(270,300)
Currency translation effect on foreign goodwill balances			(100)
Goodwill	0	0	0	0	270,400
Boats
Goodwill [Roll Forward]
Goodwill, Gross	227,100	227,100	227,100	227,100	227,100
Goodwill	$ 227,100	$ 227,100	$ 227,100	$ 227,100	$ 227,100