Goodwill and Intangibles Finite-Lived Intangibles (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 679.6	$ 1,059.7	$ 679.6	$ 1,059.7	$ 966.1	$ 1,030.7
Acquisitions			(305.8)	28.2
Goodwill, Other Increase (Decrease)			19.3	0.8
Gross Amount	1,504.6	1,494.2	1,504.6	1,494.2	1,494.1
Accumulated Amortization	(638.2)	(554.3)	(638.2)	(554.3)	(575.8)
Amortization Expense for Intangibles	19.7	18.2	59.0	54.0
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	288.6	311.8	288.6	311.8	304.2
Accumulated Amortization	0.0	0.0	0.0	0.0	0.0
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	917.3	913.1	917.3	913.1	909.4
Accumulated Amortization	(510.5)	(463.2)	(510.5)	(463.2)	(473.5)
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	131.5	101.7	131.5	101.7	113.7
Accumulated Amortization	(83.5)	(58.3)	(83.5)	(58.3)	(66.7)
Developed Technology Rights
Finite-Lived Intangible Assets [Line Items]
Gross Amount	167.2	167.6	167.2	167.6	166.8
Accumulated Amortization	(44.2)	(32.8)	(44.2)	(32.8)	(35.6)
Propulsion [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill	53.6	54.0	53.6	54.0	50.8	54.1
Acquisitions			0.0	0.0
Goodwill, Other Increase (Decrease)			2.8	(0.1)
Boat [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 170.1	$ 171.1	170.1	171.1	$ 169.3	$ 143.9
Acquisitions			0.0	28.2
Goodwill, Other Increase (Decrease)			$ 0.8	$ (1.0)