v3.25.2

Goodwill and Intangibles Goodwill (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 28, 2025	Mar. 29, 2025	Jun. 29, 2024	Jun. 28, 2025	Jun. 29, 2024	Dec. 31, 2024	Mar. 30, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Goodwill, Impaired, Accumulated Impairment Loss		$ 0.0				$ 0.0	$ 0.0
Goodwill, Other Increase (Decrease)				$ 20.0	$ (6.6)
Goodwill	$ 986.1		$ 1,024.1	986.1	1,024.1	966.1		$ 1,030.7
Amortization Expense for Intangibles	20.1		17.9	39.3	35.8
Goodwill, Purchase Accounting Adjustments					2.2
Propulsion [Member]
Goodwill [Roll Forward]
Goodwill, Other Increase (Decrease)				3.0	(2.1)
Goodwill	53.8		52.0	53.8	52.0	50.8		54.1
Boat [Member]
Goodwill [Roll Forward]
Goodwill, Other Increase (Decrease)				0.5	(1.3)
Goodwill	169.8		142.6	169.8	142.6	169.3		143.9
Navico Group
Goodwill [Roll Forward]
Goodwill, Impaired, Accumulated Impairment Loss	80.0			80.0
Goodwill, Other Increase (Decrease)				15.8	(3.0)
Goodwill	529.2		596.7	529.2	596.7	513.4		599.7
Engine Parts and Accessories [Member]
Goodwill [Roll Forward]
Goodwill, Other Increase (Decrease)				0.7	(0.2)
Goodwill	$ 233.3		$ 232.8	$ 233.3	$ 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

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BRUNSWICK CORP 10-Q