| Cover Page | Aug. 03, 2021 | May 06, 2021 |
| Cover [Abstract] | ||
| Document Type | 8-K | |
| Document Period End Date | Aug. 3, 2021 | |
| 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 | false | |
| Amendment Flag | false | |
| Entity Central Index Key | 0001637655 |
