| Cover Page | Aug. 07, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Nov. 5, 2020 |
| Entity Registrant Name | Horizon Global Corp |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-37427 |
| Entity Tax Identification Number | 47-3574483 |
| Entity Address, Address Line One | 47912 Halyard Drive |
| Entity Address, Address Line Two | Suite 100 |
| Entity Address, City or Town | Plymouth |
| Entity Address, State or Province | MI |
| Entity Address, Postal Zip Code | 48170 |
| City Area Code | 734 |
| Local Phone Number | 656-3000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Trading Symbol | HZN |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | true |
| Amendment Flag | false |
| Entity Central Index Key | 0001637655 |
