v3.25.4
Summary of Significant Accounting Policies (Details)
$ in Millions
12 Months Ended
Dec. 31, 2025
USD ($)
segment
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Property, Plant and Equipment      
Number of reportable segments | segment 3    
Pre-tax gain (loss) from foreign currency remeasurements $ 1.4 $ (9.4) $ 14.7
Allowance for doubtful accounts receivable 5.8 3.4  
Other inventories 376.8 395.5  
Advertising costs 184.7 136.7 131.0
HDMC Entities      
Property, Plant and Equipment      
Research and development expenses 154.3 161.0 159.3
LiveWire      
Property, Plant and Equipment      
Research and development expenses $ 23.9 $ 41.7 $ 54.1
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