Summary of Significant Accounting Policies - Additional Information (Details) $ in Millions		12 Months Ended
	Sep. 26, 2022 USD ($)	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Property, Plant and Equipment
Number of reportable segments | segment		3
Pre-tax gain (loss) from foreign currency remeasurements		$ 14.7	$ 26.2	$ 22.0
Allowance for doubtful accounts receivable		2.1	2.9
Other inventories		447.5	425.0
Research and development expenses		159.3	158.6	175.1
Advertising costs		$ 131.0	$ 105.6	$ 107.6
LiveWire
Property, Plant and Equipment
Proceeds from divestiture of business	$ 294.0
Payments to acquire business	180.0
Kwang Yang Motor Co., Ltd | LiveWire
Property, Plant and Equipment
Payments to acquire business	100.0
AEA-Bridges Impact Corp | LiveWire
Property, Plant and Equipment
Payments to acquire business	$ 14.0
Buildings
Property, Plant and Equipment
Useful lives of property, plant and equipment (in years)		30 years
Building and land improvements
Property, Plant and Equipment
Useful lives of property, plant and equipment (in years)		7 years
Machinery and equipment | Minimum
Property, Plant and Equipment
Useful lives of property, plant and equipment (in years)		3 years
Machinery and equipment | Maximum
Property, Plant and Equipment
Useful lives of property, plant and equipment (in years)		10 years
Software | Minimum
Property, Plant and Equipment
Useful lives of property, plant and equipment (in years)		3 years
Software | Maximum
Property, Plant and Equipment
Useful lives of property, plant and equipment (in years)		7 years