Goodwill and Intangibles Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2025	Mar. 30, 2024	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Goodwill, Impaired, Accumulated Impairment Loss	$ 0.0	$ 0.0	$ 0.0
Goodwill, Other Increase (Decrease)	6.4	(4.4)
Goodwill	972.5	1,026.3	966.1	$ 1,030.7
Amortization Expense for Intangibles	19.2	17.9
Propulsion [Member]
Goodwill [Roll Forward]
Goodwill, Other Increase (Decrease)	0.8	(1.1)
Goodwill	51.6	53.0	50.8	54.1
Boat [Member]
Goodwill [Roll Forward]
Goodwill, Other Increase (Decrease)	0.1	(0.1)
Goodwill	169.4	143.8	169.3	143.9
Navico Group
Goodwill [Roll Forward]
Goodwill, Impaired, Accumulated Impairment Loss	80.0
Goodwill, Other Increase (Decrease)	5.3	(3.0)
Goodwill	518.7	596.7	513.4	599.7
Engine Parts and Accessories [Member]
Goodwill [Roll Forward]
Goodwill, Other Increase (Decrease)	0.2	(0.2)
Goodwill	$ 232.8	$ 232.8	$ 232.6	$ 233.0
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