Restructuring, Exit and Integration Activities (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
Restructuring Cost and Reserve [Line Items]
Total Restructuring, Exit and Impairment Charges	$ 333.8		$ 12.2	$ 342.9		$ 33.6
Restructuring Reserve [Abstract]
Total Cash Payments for Restructuring, Exit, Integration and Impairment Charges	2.8		7.4	12.2		25.5
Accrued Charges at End of the Period	12.2		10.7	12.2		10.7
Goodwill	679.6		1,059.7	679.6		1,059.7	$ 966.1	$ 1,030.7
Includes non-operating
Restructuring Cost and Reserve [Line Items]
Total Restructuring, Exit and Impairment Charges	332.9			342.0
Restructuring and Exit Activities [Member]
Restructuring Cost and Reserve [Line Items]
Employee Termination and Other Benefits	8.6		10.9	16.9		26.9
Restructuring Reserve [Abstract]
Asset Impairment Charges	323.7		1.3	324.1		6.7
Professional Fees	0.6			1.0
Boat [Member]
Restructuring Cost and Reserve [Line Items]
Total Restructuring, Exit and Impairment Charges	8.4		2.9	9.7		5.6
Restructuring Reserve [Abstract]
Total Cash Payments for Restructuring, Exit, Integration and Impairment Charges	0.4		2.9	2.8		4.6
Accrued Charges at End of the Period	8.0		2.6	8.0		2.6
Goodwill	170.1		171.1	170.1		171.1	169.3	143.9
Boat [Member] | Restructuring and Exit Activities [Member]
Restructuring Cost and Reserve [Line Items]
Employee Termination and Other Benefits	6.9		2.8	8.2		5.5
Restructuring Reserve [Abstract]
Asset Impairment Charges	0.9		0.1	0.9		0.1
Professional Fees	0.6			0.6
Corporate Segment [Member]
Restructuring Cost and Reserve [Line Items]
Total Restructuring, Exit and Impairment Charges	0.2		1.1	0.5		2.3
Restructuring Reserve [Abstract]
Total Cash Payments for Restructuring, Exit, Integration and Impairment Charges	0.2		0.3	1.1		1.7
Accrued Charges at End of the Period	0.3		1.2	0.3		1.2
Corporate Segment [Member] | Restructuring and Exit Activities [Member]
Restructuring Cost and Reserve [Line Items]
Employee Termination and Other Benefits	0.2		1.1	0.5		2.3
Restructuring Reserve [Abstract]
Asset Impairment Charges	0.0		0.0	0.0		0.0
Professional Fees	0.0			0.0
Engine Parts and Accessories [Member]
Restructuring Cost and Reserve [Line Items]
Total Restructuring, Exit and Impairment Charges	0.0		0.8	0.4		4.3
Restructuring Reserve [Abstract]
Total Cash Payments for Restructuring, Exit, Integration and Impairment Charges	0.1		0.9	1.0		3.6
Accrued Charges at End of the Period	0.1		1.4	0.1		1.4
Goodwill	233.2		233.0	233.2		233.0	232.6	233.0
Engine Parts and Accessories [Member] | Restructuring and Exit Activities [Member]
Restructuring Cost and Reserve [Line Items]
Employee Termination and Other Benefits	0.0		0.8	0.4		4.3
Restructuring Reserve [Abstract]
Asset Impairment Charges	0.0		0.0	0.0		0.0
Professional Fees	0.0			0.0
Navico Group
Restructuring Cost and Reserve [Line Items]
Total Restructuring, Exit and Impairment Charges	324.3		4.5	330.2		12.5
Restructuring Reserve [Abstract]
Total Cash Payments for Restructuring, Exit, Integration and Impairment Charges	1.8		0.8	5.2		8.2
Accrued Charges at End of the Period	3.3		2.8	3.3		2.8
Goodwill, Impairment Loss				305.8
Goodwill	222.7		601.6	222.7		601.6	513.4	599.7
Impairment of Intangible Assets (Excluding Goodwill)				17.0
Goodwill and Intangible Asset Impairment				322.8
Navico Group | Restructuring and Exit Activities [Member]
Restructuring Cost and Reserve [Line Items]
Employee Termination and Other Benefits	1.5		3.3	6.6		5.9
Restructuring Reserve [Abstract]
Asset Impairment Charges	322.8	[1]	1.2	323.2	[2]	6.6
Professional Fees	0.0			0.4
Propulsion [Member]
Restructuring Cost and Reserve [Line Items]
Total Restructuring, Exit and Impairment Charges	0.0		2.9	1.2		8.9
Restructuring Reserve [Abstract]
Total Cash Payments for Restructuring, Exit, Integration and Impairment Charges	0.3		2.5	2.1		7.4
Accrued Charges at End of the Period	0.5		2.7	0.5		2.7
Goodwill	53.6		54.0	53.6		54.0	$ 50.8	$ 54.1
Propulsion [Member] | Restructuring and Exit Activities [Member]
Restructuring Cost and Reserve [Line Items]
Employee Termination and Other Benefits	0.0		2.9	1.2		8.9
Restructuring Reserve [Abstract]
Asset Impairment Charges	0.0		$ 0.0	0.0		$ 0.0
Professional Fees	$ 0.0			$ 0.0

[1] (B) Includes impairment charges of $322.8 million associated with an impairment of the Navico Group reporting unit's goodwill and trade names during the three months ended September 27, 2025.

[2] (B) Includes impairment charges of $322.8 million associated with an impairment of the Navico Group reporting unit's goodwill and trade names during the nine months ended September 27, 2025.