| Document And Entity Information | Dec. 02, 2019 |
| Document Information [Line Items] | |
| Entity Registrant Name | J.B. HUNT TRANSPORT SERVICES, INC. |
| Document Type | 8-K |
| Document Period End Date | Dec. 2, 2019 |
| 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 |
