Goodwill and Intangibles Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2024	Sep. 30, 2023	Apr. 01, 2023	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Goodwill, Impaired, Accumulated Impairment Loss	$ 0.0		$ 0.0	$ 0.0
Goodwill, Other Increase (Decrease)	(4.4)		6.4
Goodwill	1,026.3		974.0	1,030.7	$ 967.6
Amortization Expense for Intangibles	17.9		16.6
Goodwill, Purchase Accounting Adjustments		$ 4.5
Propulsion [Member]
Goodwill [Roll Forward]
Goodwill, Other Increase (Decrease)	(1.1)		0.0
Goodwill	53.0		14.0	54.1	14.0
Boat [Member]
Goodwill [Roll Forward]
Goodwill, Other Increase (Decrease)	(0.1)		4.7
Goodwill	143.8		129.7	143.9	125.0
Navico Group
Goodwill [Roll Forward]
Goodwill, Other Increase (Decrease)	(3.0)		1.7
Goodwill	596.7		597.5	599.7	595.8
Engine Parts and Accessories [Member]
Goodwill [Roll Forward]
Goodwill, Other Increase (Decrease)	(0.2)		0.0
Goodwill	$ 232.8		$ 232.8	$ 233.0	$ 232.8
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