| Document And Entity Information | Apr. 22, 2021 |
| Document Information [Line Items] | |
| Entity, Registrant Name | J.B. HUNT TRANSPORT SERVICES, INC. |
| Document, Type | 8-K |
| Document, Period End Date | Apr. 22, 2021 |
| Entity, Incorporation, State or Country Code | AR |
| Entity, File Number | 0-11757 |
| Entity, Tax Identification Number | 71-0335111 |
| Entity, Address, Address Line One | 615 J.B. Hunt Corporate Drive |
| Entity, Address, City or Town | Lowell |
| Entity, Address, State or Province | AR |
| Entity, Address, Postal Zip Code | 72745 |
| City Area Code | 479 |
| Local Phone Number | 820-0000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | JBHT |
| Security Exchange Name | NASDAQ |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0000728535 |
