| Document and Entity Information | Mar. 17, 2020 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001760965 |
| Document Type | 8-K |
| Document Period End Date | Mar. 17, 2020 |
| Entity Registrant Name | Kontoor Brands, Inc. |
| Entity Incorporation State Country Code | NC |
| Entity File Number | 001-38854 |
| Entity Tax Identification Number | 83-2680248 |
| Entity Address, Address Line One | 400 N. Elm Street |
| Entity Address, City or Town | Greensboro |
| Entity Address, State or Province | NC |
| Entity Address, Postal Zip Code | 27401 |
| City Area Code | (336) |
| Local Phone Number | 332-3400 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, no par value |
| Trading Symbol | KTB |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
