| Cover Page | Mar. 31, 2020 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Mar. 31, 2020 |
| Entity Registrant Name | GUESS INC |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-11893 |
| Entity Tax Identification Number | 95-3679695 |
| Entity Address, Address Line One | 1444 S. Alameda Street |
| Entity Address, City or Town | Los Angeles |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 90021 |
| City Area Code | 213 |
| Local Phone Number | 765-3100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | GES |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000912463 |
| Amendment Flag | false |
