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Goodwill and Intangibles Goodwill (Details) - USD ($)
$ in Millions
 3 Months Ended
Apr. 04, 2026
Mar. 29, 2025
Dec. 31, 2025
Dec. 31, 2024
Goodwill [Roll Forward]        
Goodwill, Impaired, Accumulated Impairment Loss $ 0.0 $ 0.0 $ 0.0  
Goodwill, Other Increase (Decrease) (4.8) 6.4    
Goodwill 676.4 972.5 681.2 $ 966.1
Amortization Expense for Intangibles 19.5 19.2    
Propulsion [Member]        
Goodwill [Roll Forward]        
Goodwill, Other Increase (Decrease) 0.1 0.8    
Goodwill 54.1 51.6 54.0 50.8
Boat [Member]        
Goodwill [Roll Forward]        
Goodwill, Other Increase (Decrease) (2.7) 0.1    
Goodwill 167.7 169.4 170.4 169.3
Navico Group        
Goodwill [Roll Forward]        
Goodwill, Impaired, Accumulated Impairment Loss 385.8   80.0  
Goodwill, Other Increase (Decrease) (2.2) 5.3    
Goodwill 221.4 518.7 223.6 513.4
Engine Parts and Accessories [Member]        
Goodwill [Roll Forward]        
Goodwill, Other Increase (Decrease) 0.0 0.2    
Goodwill $ 233.2 $ 232.8 $ 233.2 $ 232.6
Customer Relationships [Member]        
Goodwill [Roll Forward]        
Finite-Lived Intangible Asset, Weighted Average Remaining Useful Life 13 years 3 months 18 days      
Other Intangible Assets [Member]        
Goodwill [Roll Forward]        
Finite-Lived Intangible Asset, Weighted Average Remaining Useful Life 11 years 8 months 12 days