Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangibles Goodwill (Details)

v3.8.0.1
Goodwill and Intangibles Goodwill (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Dec. 31, 2016
Goodwill [Roll Forward]      
Goodwill, Beginning Balance $ 413.8 $ 298.7  
Acquisitions 5.8 115.0  
Impairments 0.0 0.0  
Adjustments 6.7 (0.7)  
Goodwill, Ending Balance 426.3 413.0  
Goodwill Accumulated Impairment Loss 0.0 0.0 $ 0.0
Marine Engine [Member]      
Goodwill [Roll Forward]      
Goodwill, Beginning Balance 25.1 26.2  
Acquisitions 5.8 0.0  
Impairments 0.0 0.0  
Adjustments 1.4 (0.3)  
Goodwill, Ending Balance 32.3 25.9  
Boat [Member]      
Goodwill [Roll Forward]      
Goodwill, Beginning Balance 2.2 0.0  
Acquisitions 0.0 2.5  
Impairments 0.0 0.0  
Adjustments 0.0 0.0  
Goodwill, Ending Balance 2.2 2.5  
Fitness [Member]      
Goodwill [Roll Forward]      
Goodwill, Beginning Balance 386.5 272.5  
Acquisitions 0.0 112.5  
Impairments 0.0 0.0  
Adjustments 5.3 (0.4)  
Goodwill, Ending Balance $ 391.8 $ 384.6