XML 53 R25.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Schedule II - Valuation and Qualifying Accounts (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Notes Tables |
Summary of Allowance for Doubtful Accounts and Revenue Adjustments [Table Text Block] |
Allowance for Doubtful Accounts, Revenue Adjustments and Other for the Years Ended: |  | Balance at Beginning of Year |  |  | Charged to Expense/ Against Revenue |  |  | Write-Offs, Net of Recoveries |  |  | Balance at End of Year |
December 31, 2017 |  |  | 13.4 |  |  |  | 29.3 |  |  |  | (18.7 | ) |  |  | 24.0 |
December 31, 2018 |  |  | 24.0 |  |  |  | 35.7 |  |  |  | (23.9 | ) |  |  | 35.8 |
December 31, 2019 |  |  | 35.8 |  |  |  | 34.2 |  |  |  | (47.5 | ) |  |  | 22.5 |

X
- Definition Tabular disclosure of the allowance for doubtful accounts and revenue adjustments. + References No definition available. + Details
Name: | jbht_SummaryOfAllowanceForDoubtfulAccountsAndRevenueAdjustmentsTableTextBlock
Namespace Prefix: | jbht_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration