Document And Entity Information Debt Instrument, Name [Domain] Note To Financial Statement Details Textual Note 3 - Share-based Compensation Income taxes Note 4 - Financing Arrangements us-gaap_DebtInstrumentInterestRateStatedPercentage Debt Instrument, Interest Rate, Stated Percentage ecd_NonRule10b51ArrTrmntdFlag Non-Rule 10b5-1 Arrangement Terminated [Flag] Note 6 - Fair Value Measurements ecd_NonRule10b51ArrAdoptedFlag Non-Rule 10b5-1 Arrangement Adopted [Flag] Note 9 - Business Segments Trading Arrangements, by Individual [Table] Note 3 - Share-based Compensation - Components of Share-based Compensation (Details) Material Terms of Trading Arrangement [Text Block] Note 4 - Financing Arrangements - Outstanding Borrowings (Details) Reconciliation of Revenue and Operating Income (Loss) from Segments to Consolidated [Table Text Block] Tabular disclosure of all significant reconciling items in the reconciliation of total revenues and operating income (loss) from reportable segments to the entity's consolidated revenues. Note 6 - Fair Value Measurements - Assets and Liabilities Measure at Fair Value (Details) Reconciliation of Net Capital Expenditures from Segment to Consolidated [Table Text Block] Tabular disclosure of all significant reconciling items in the reconciliation of net capital expenditures from reportable segments to the entity's consolidated assets. Note 9 - Business Segments - Assets (Details) Note 9 - Business Segments - Net Capital Expenditures (Details) Rents, purchased transportation, and fuel The total amount of other operating costs and expenses from rent, purchased transportation, and fuel that are associated with the entity's normal revenue producing operation. Note 9 - Segment Information - Revenues and Operating Income (Loss) (Details) us-gaap_TreasuryStockSharesAcquired Treasury Stock, Shares, Acquired Notes To Financial Statements Notes To Financial Statements [Abstract] us-gaap_IncreaseDecreaseInAccountsReceivable Trade accounts receivable Debt Instrument [Axis] Cash flows from operating activities: Cash flows from investing activities: us-gaap_NetCashProvidedByUsedInOperatingActivities Net cash provided by operating activities Cash flows from financing activities: us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash used in investing activities us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash used in financing activities us-gaap_EffectiveIncomeTaxRateContinuingOperations Effective Income Tax Rate Reconciliation, Percent Service Excluding Fuel Surcharge [Member] Assistance, including, but not limited to, technology, license and maintenance, license and service, maintenance, oil and gas, and financial service, excluding fuel surcharge. Fuel Surcharge [Member] Information pertaining to fuel surcharge. Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Salaries, wages and employee benefits Operating Segments [Member] Accounting Policies [Abstract] Performance Shares [Member] Segments [Domain] us-gaap_DividendsCash Common Stock, Dividends, Per Share, Cash Paid us-gaap_CommonStockDividendsPerShareDeclared Common Stock, Dividends, Per Share, Declared Segments [Axis] Income Statement [Abstract] Intersegment Eliminations [Member] us-gaap_UnrecognizedTaxBenefits Unrecognized Tax Benefits us-gaap_NumberOfReportableSegments Number of Reportable Segments us-gaap_DeferredIncomeTaxExpenseBenefit Deferred income taxes us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Segment Reporting [Text Block] Treasury Stock, Common [Member] Net earnings Net earnings Adjustments to reconcile net earnings to net cash provided by operating activities: Award Type [Axis] Segment Reporting, Reconciliation of Asset by Segment to Consolidated [Table Text Block] us-gaap_LiabilitiesAndStockholdersEquity Total liabilities and shareholders' equity Pretax compensation expense Consolidation Items [Axis] Segment Reporting [Table] us-gaap_ShareBasedCompensation Share-based compensation Subsequent Event [Member] Tax benefit us-gaap_CostsAndExpenses Total operating expenses Consolidation Items [Domain] us-gaap_UnsecuredDebt Unsecured Debt Senior Credit Facility and Senior Notes [Member] Represents the senior credit facility and senior notes. us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Senior Notes [Member] Income Tax Disclosure [Text Block] Share-Based Payment Arrangement [Text Block] Changes in operating assets and liabilities: Trade accounts payable us-gaap_IncreaseDecreaseInAccountsPayable us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Accrued payroll and other accrued expenses us-gaap_IncreaseDecreaseInAccruedLiabilities us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect Net change in cash and cash equivalents us-gaap_TreasuryStockValueAcquiredCostMethod Purchase of treasury shares Treasury Stock, Value, Acquired, Cost Method us-gaap_CommonStockDividendsPerShareCashPaid Common Stock, Dividends, Per Share, Cash Paid (in dollars per share) us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Statement [Table] Credit Facility [Axis] Credit Facility [Domain] Fair Value Hierarchy and NAV [Domain] Revolving Credit Facility [Member] Measurement Frequency [Domain] us-gaap_RepaymentsOfLongTermDebt Payments on long-term debt us-gaap_RepaymentsOfLinesOfCredit Payments on revolving lines of credit and other Statement of Financial Position [Abstract] us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity Line of Credit Facility, Maximum Borrowing Capacity jbht_LineOfCreditFacilityDurationByWhichMaturityDateMayBeExtendedUponRequest Line of Credit Facility, Duration By Which Maturity Date May Be Extended Upon Request Represents the period of time by which the maturity date of the line of credit facility may be extended upon request. Senior Notes Issued in March 2025 [Member] Represents the senior notes issued in March 2025. Goodwill and intangible assets, net Long-Term Debt, Type [Axis] Product and Service [Domain] Product and Service [Axis] us-gaap_LineOfCredit Long-Term Line of Credit Fair Value, Recurring [Member] us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Line of Credit Facility [Table] Other assets us-gaap_RepaymentsOfDebt Repayments of Debt us-gaap_PaymentsForRepurchaseOfCommonStock Purchase of treasury stock Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table] us-gaap_IncreaseDecreaseInOtherOperatingAssets Other assets dei_DocumentType Document Type Operating expenses: Document Information [Line Items] dei_DocumentQuarterlyReport Document Quarterly Report Document Information [Table] dei_EntityInteractiveDataCurrent Entity Interactive Data Current Measurement Frequency [Axis] dei_DocumentTransitionReport Document Transition Report Commitments and Contingencies Disclosure [Text Block] Weighted average diluted shares outstanding (in shares) Statement [Line Items] Fair Value Hierarchy and NAV [Axis] Award Type [Domain] us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Weighted average basic shares outstanding (in shares) us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 Share Repurchase Program, Remaining Authorized, Amount us-gaap_DebtInstrumentTerm Debt Instrument, Term Basic earnings per share (in dollars per share) Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Effective Income Tax Rate Reconciliation [Table] Revolving Credit Facility and Term Loans [Member] Relating to the revolving credit facility and term loans. jbht_DebtInstrumentLoansMaximumBorrowingCapacity Debt Instrument, Loans, Maximum Borrowing Capacity Maximum borrowing capacity for loans under the debt instrument. us-gaap_PolicyTextBlockAbstract Accounting Policies us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements us-gaap_TableTextBlock Notes Tables Proceeds from revolving lines of credit and other Document Fiscal Period Focus Document Fiscal Year Focus Depreciation and amortization Depreciation and amortization Trade accounts payable Committed Term Loans [Member] Relatd to committed term loans. Amendment Flag Common Stock [Member] Net capital expenditures us-gaap_SegmentExpenditureAdditionToLongLivedAssets Proceeds from issuances of long-term debt dei_DocumentPeriodEndDate Document Period End Date Legal Entity [Axis] Accrued payroll Noncash lease expense dei_EntityFileNumber Entity File Number dei_EntityTaxIdentificationNumber Entity Tax Identification Number Other accrued expenses Noncash investing activities Entity [Domain] Entity Central Index Key dei_EntityRegistrantName Entity Registrant Name dei_EntityCurrentReportingStatus Entity Current Reporting Status dei_EntityIncorporationStateCountryCode Entity Incorporation, State or Country Code Current portion of long-term debt Less current portion of long-term debt Current Fiscal Year End Date Rents and purchased transportation Costs of purchased transportation and other third-party services incurred to service customers. Operating supplies and expenses Operating supplies and expenses Maintenance and other operating supplies costs incurred and directly related to services rendered by an entity during the reporting period. Capitalization, Equity [Table] Long-term debt Total long-term debt dei_EntityFilerCategory Entity Filer Category dei_EntityShellCompany Entity Shell Company dei_EntityEmergingGrowthCompany Entity Emerging Growth Company dei_EntitySmallBusiness Entity Small Business Operating Income us-gaap_OperatingIncomeLoss Operating income Claims accruals Long-term claims accruals jbht_LineOfCreditFacilityMaximumBorrowingCapacityOptionalIncrease Line of Credit Facility, Maximum Borrowing Capacity, Optional Increase Optional increase in the maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. us-gaap_LongTermDebt Long-term debt Other segment items us-gaap_SegmentReportingOtherItemAmount dei_EntityAddressStateOrProvince Entity Address, State or Province Loss Contingencies [Table] Statement of Stockholders' Equity [Abstract] dei_EntityAddressCityOrTown Entity Address, City or Town Net interest expense JBI [Member] Our Intermodal business segment. jbht_PaymentsForProceedsFromStockRepurchasesForPayrollTaxesAndOther Stock repurchased for payroll taxes and other Represents the amount of cash outflow (inflow) during the period related to stock repurchased for payroll taxes and other. dei_EntityAddressAddressLine1 Entity Address, Address Line One ICS [Member] Our Integrated Capacity Solutions business segment. Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Statement of Cash Flows [Abstract] DCS [Member] Represents information pertaining to the Dedicated Contract Services business segment. dei_CityAreaCode City Area Code JBT [Member] Our full-load dry-van business segment. Claims accruals us-gaap_IncreaseDecreaseInSelfInsuranceReserve dei_LocalPhoneNumber Local Phone Number dei_EntityAddressPostalZipCode Entity Address, Postal Zip Code Long-Term Debt, Type [Domain] dei_Security12bTitle Title of 12(b) Security Equity Components [Axis] dei_SecurityExchangeName Security Exchange Name dei_TradingSymbol Trading Symbol Class of Stock [Axis] Equity Component [Domain] Communication and utilities Equity [Text Block] Fair Value, Inputs, Level 1 [Member] dei_EntityCommonStockSharesOutstanding Entity Common Stock, Shares Outstanding (in shares) Additional Paid-in Capital [Member] FMS [Member] Information pertaining to the Final Mile Services (FMS) segment. Retained Earnings [Member] Fuel and fuel taxes Earnings Per Share [Text Block] Senior Notes Maturing in March 2026 [Member] Represents the senior notes maturing in March 2026. Operating taxes and licenses Insurance and claims Insurance and claims Term Loans [Member] Represents term loans. us-gaap_PropertyPlantAndEquipmentNet Net property and equipment Property and equipment, at cost Accruals for equipment received Subsequent Event Type [Domain] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Subsequent Event Type [Axis] Income taxes payable or receivable us-gaap_IncreaseDecreaseInIncomeTaxes Share-based compensation Assets us-gaap_Assets Total assets Deferred income taxes Cash and cash equivalents Fair Value Disclosures [Text Block] Supplemental disclosure of cash flow information: Current liabilities: us-gaap_LiabilitiesCurrent Total current liabilities Diluted earnings per share (in dollars per share) Trading investments Trade accounts receivable, net us-gaap_DepreciationDepletionAndAmortization Depreciation and amortization us-gaap_LongTermDebtFairValue Long-Term Debt, Fair Value us-gaap_IncomeTaxesPaid Income taxes us-gaap_GainLossOnDispositionOfAssets1 Loss on sale of revenue equipment and other Net proceeds from sale of equipment Interest Less accumulated depreciation us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax Restricted share unit expense, net of tax General and administrative expenses, including asset dispositions us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Earnings before income taxes Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Shareholders' equity Balance Balance Debt Disclosure [Text Block] Prepaid expenses and other Operating Costs and Expenses us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1 Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition us-gaap_PaymentsOfDividends Dividends paid us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Additions to property and equipment Nature of Operation, Product Information, Concentration of Risk [Table] Current assets: us-gaap_DebtWeightedAverageInterestRate Debt, Weighted Average Interest Rate Schedule of Debt [Table Text Block] us-gaap_AssetsCurrent Total current assets Other long-term liabilities Restricted share issuances, net of stock repurchased for payroll taxes and other ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] Operating revenues ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] Restricted Stock Units (RSUs) [Member]