v3.26.3
Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Jun. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Goodwill [Roll Forward]          
Beginning balance       $ 348.8 $ 393.5
Goodwill impairment $ 0.0 $ 0.0 $ (52.6) 0.0 (52.6)
Currency translation effect on foreign goodwill balances       (0.1) 7.7
Ending balance 348.7 348.6   348.7 348.6
Polaris Powersports          
Goodwill [Roll Forward]          
Beginning balance       118.2  
Currency translation effect on foreign goodwill balances       (0.1)  
Ending balance 118.1     118.1  
Off Road          
Goodwill [Roll Forward]          
Beginning balance         116.2
Currency translation effect on foreign goodwill balances         1.8
Ending balance   118.0     118.0
Marine          
Goodwill [Roll Forward]          
Beginning balance       230.6 230.6
Ending balance 230.6 230.6   230.6 230.6
Aixam & Goupil          
Goodwill [Roll Forward]          
Beginning balance       0.0  
Ending balance $ 0.0     $ 0.0  
On Road          
Goodwill [Roll Forward]          
Beginning balance         46.7
Goodwill impairment         (52.6)
Currency translation effect on foreign goodwill balances         5.9
Ending balance   $ 0.0     $ 0.0