v3.26.1
Fair Value Measurements (Details) - EBP Total - USD ($)
Dec. 31, 2025
Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, fair value $ 1,327,019,953 $ 1,228,913,743
Common collective trust funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, fair value 1,047,723,198 941,292,717
Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, fair value 107,504,896 110,069,411
Brokerage accounts    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, fair value 90,388,663 79,400,468
Money market fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, fair value 54,701,013 55,948,045
Harley-Davidson, Inc. Common Stock Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, fair value 26,702,183 42,203,102
Level 1    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, fair value 1,327,019,953 1,228,913,743
Level 1 | Common collective trust funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, fair value 1,047,723,198 941,292,717
Level 1 | Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, fair value 107,504,896 110,069,411
Level 1 | Brokerage accounts    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, fair value 90,388,663 79,400,468
Level 1 | Money market fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, fair value 54,701,013 55,948,045
Level 1 | Harley-Davidson, Inc. Common Stock Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, fair value $ 26,702,183 $ 42,203,102