Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net Sales	$ 5,237.1	$ 6,401.4	$ 6,812.2
Cost of sales, including restructuring	3,901.0	4,625.3	4,865.1
Cost of Sales	3,886.3	4,614.4	4,865.0
Operating Expenses	1,024.5	1,041.2	999.3
Operating Earnings (Loss)	311.6	734.9	947.8
Total Assets	5,677.7	6,230.5
Depreciation	214.0	204.3	167.9
Amortization	74.8	68.6	63.3
Capital Expenditures	167.4	289.3	388.3
Research & Development Expense	169.6	185.2	202.9
Net property	1,251.5	1,315.8
Restructuring, Exit and Impairment Charges	121.7	54.7	25.1
Cost of Sales [Member]
Segment Reporting Information [Line Items]
Restructuring, Exit and Impairment Charges	14.7	10.9	0.1
Selling, General and Administrative Expenses [Member]
Segment Reporting Information [Line Items]
Restructuring, Exit and Impairment Charges	107.0	43.8	25.0
United States [Member]
Segment Reporting Information [Line Items]
Net Sales	3,547.6	4,449.8	4,699.2
Net property	1,127.8	1,182.7
International [Member]
Segment Reporting Information [Line Items]
Net Sales	1,689.5	1,951.6	2,113.0
Net property	105.2	111.4
Parts and Accessories [Member]
Segment Reporting Information [Line Items]
Net Sales	0.0	0.0	0.0
Net property	18.5	21.7
Propulsion [Member]
Segment Reporting Information [Line Items]
Net Sales	1,809.0	2,406.5	2,425.7
Cost of sales, including restructuring	1,315.0	1,643.2	1,650.3
Operating Expenses	251.4	268.6	252.5
Operating Earnings (Loss)	242.6	494.7	522.9
Depreciation	127.0	124.3	98.8
Amortization	8.7	4.7	3.1
Research & Development Expense	88.2	99.6	104.6
Segment, Expenditure, Addition to Long-Lived Assets	81.4	157.1	236.1
Restructuring, Exit and Impairment Charges	9.6	2.7	0.0
Boat [Member]
Segment Reporting Information [Line Items]
Net Sales	1,553.5	1,988.7	2,119.1
Cost of sales, including restructuring	1,288.2	1,612.6	1,707.8
Operating Expenses	202.0	220.5	198.5
Operating Earnings (Loss)	63.3	155.6	212.8
Depreciation	52.8	49.0	42.1
Amortization	5.8	5.0	3.3
Research & Development Expense	25.2	26.9	26.7
Segment, Expenditure, Addition to Long-Lived Assets	47.3	72.3	86.6
Restructuring, Exit and Impairment Charges	6.3	10.5	0.0
Parts and Accessories [Member]
Segment Reporting Information [Line Items]
Net Sales	0.0	0.0	0.0
Cost of sales, including restructuring	0.0	0.0	0.0
Operating Expenses	113.6	138.0	124.1
Operating Earnings (Loss)	(113.6)	(138.0)	(124.1)
Depreciation	5.0	3.5	2.5
Amortization	3.5	2.5	1.0
Research & Development Expense	8.3	9.3	4.2
Segment, Expenditure, Addition to Long-Lived Assets	8.5	15.7	15.5
Restructuring, Exit and Impairment Charges	2.4	7.7	17.4
Navico Group
Segment Reporting Information [Line Items]
Net Sales	720.1	813.5	964.8
Cost of sales, including restructuring	471.5	512.6	594.7
Operating Expenses	349.2	295.7	301.9
Operating Earnings (Loss)	(100.6)	5.2	68.2
Depreciation	12.3	12.3	13.5
Amortization	55.9	55.7	55.2
Research & Development Expense	46.6	48.0	66.1
Segment, Expenditure, Addition to Long-Lived Assets	21.8	26.3	24.4
Restructuring, Exit and Impairment Charges	98.6	30.5	7.7
Engine Parts and Accessories [Member]
Segment Reporting Information [Line Items]
Net Sales	1,154.5	1,192.7	1,302.6
Cost of sales, including restructuring	826.3	856.9	912.3
Operating Expenses	108.3	118.4	122.3
Operating Earnings (Loss)	219.9	217.4	268.0
Depreciation	16.9	15.2	11.0
Amortization	0.9	0.7	0.7
Research & Development Expense	1.3	1.4	1.3
Segment, Expenditure, Addition to Long-Lived Assets	8.4	17.9	25.7
Restructuring, Exit and Impairment Charges	4.8	3.3	$ 0.0
Operating Segments | Propulsion [Member]
Segment Reporting Information [Line Items]
Net Sales	2,074.2
Total Assets	1,507.3	1,648.7
Operating Segments | Boat [Member]
Segment Reporting Information [Line Items]
Net Sales	1,553.5
Total Assets	868.3	874.8
Operating Segments | Parts and Accessories [Member]
Segment Reporting Information [Line Items]
Total Assets	621.0	777.1
Operating Segments | Navico Group
Segment Reporting Information [Line Items]
Net Sales	800.2
Total Assets	1,877.6	2,074.3
Operating Segments | Engine Parts and Accessories [Member]
Segment Reporting Information [Line Items]
Net Sales	1,160.8
Total Assets	$ 803.5	$ 855.6