| Cover Page | Oct. 27, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 27, 2020 |
| Entity Registrant Name | Harley-Davidson, Inc. |
| Entity Incorporation, State or Country Code | WI |
| Entity File Number | 1-9183 |
| Entity Tax Identification Number | 39-1382325 |
| Entity Address, Address Line One | 3700 West Juneau Avenue |
| Entity Address, City or Town | Milwaukee |
| Entity Address, State or Province | WI |
| Entity Address, Postal Zip Code | 53208 |
| City Area Code | 414 |
| Local Phone Number | 342-4680 |
| Title of 12(b) Security | COMMON STOCK, $0.01 par value per share |
| Trading Symbol | HOG |
| Security Exchange Name | NYSE |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000793952 |
| Amendment Flag | false |
