Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Statistical Measurement Statistical Measurement [Domain] Title of 12(b) Security Title of 12(b) Security Subsequent Event Subsequent Event [Member] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-Sale [Table] Document Fiscal Year Focus Document Fiscal Year Focus Debt, Weighted Average Interest Rate Debt, Weighted Average Interest Rate Adjustment to Compensation, Amount Adjustment to Compensation Amount Financial Instrument [Axis] Financial Instrument [Axis] Segment Reporting [Abstract] Segment Reporting [Abstract] Insurance and related expenses Operating Insurance and Claims Costs, Production Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] Assets Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Common stock Common Stock, Value, Issued Accrued salaries, wages, and benefits Employee-related Liabilities, Current Trademarks Trademarks [Member] Summary of Debt Schedule of Long-Term Debt Instruments [Table Text Block] Finance Leases Lessee, Finance Leases [Text Block] Restatement Determination Date Restatement Determination Date Claims accruals—current Accrued Insurance, Current Commitments to purchase transportation equipment Purchase Commitment, Remaining Minimum Amount Committed Measurement Frequency Measurement Frequency [Axis] US treasury and government agencies US Treasury and Government [Member] Amendment Flag Amendment Flag Goodwill Goodwill [Line Items] Current Liabilities: Liabilities, Current [Abstract] Other Investments Debt and Equity Securities, FV-NI [Line Items] Downward adjustments Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Financing cash flows for finance leases Finance Lease, Principal Payments Interest Interest Paid, Including Capitalized Interest, Operating and Investing Activities Investments Investment [Text Block] Standby Letters of Credit Standby Letters of Credit [Member] Investments [Domain] Investments [Domain] Leases [Abstract] Leases [Abstract] Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Total noncurrent liabilities Liabilities, Noncurrent Operating profit Sales-type Lease, Selling Profit (Loss) Expected to be recognized after one year Expected to be recognized after one year [Member] Expected to be recognized after one year [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Entity Address, State or Province Entity Address, State or Province Investments in equity securities and equity method investment Payments to Acquire Equity Securities, FV-NI PEO Total Compensation Amount PEO Total Compensation Amount Common stock, par value (usd per share) Common Stock, Par or Stated Value Per Share Foreign currency translation adjustment—net Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Cash and Cash Equivalents: Cash and Cash Equivalents [Abstract] Noncurrent Liabilities: Liabilities, Noncurrent [Abstract] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Weighted average common shares outstanding Weighted average common shares outstanding Weighted Average Number of Shares Outstanding, Basic Accumulated goodwill impairment charge Goodwill, Impaired, Accumulated Impairment Loss Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Notes receivable Notes Receivable [Member] Number of reportable segments Number of Reportable Segments Total current liabilities Liabilities, Current Subsegments Consolidation Items [Axis] Subsegments Consolidation Items [Axis] Customer Relationships Customer Relationships [Member] Interest and Other Income Interest and Other Income Credit Facility Credit Facility [Member] Credit Facility [Member] Entity Address, City or Town Entity Address, City or Town Delayed Term Loan Facilities Delayed Term Loan Facilities [Member] Delayed Term Loan Facilities Share-based Compensation Arrangement by Share-based Payment Award Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Future minimum payments to be received on leases Sales-type Lease, Lease Receivable Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Document Information Document Information [Line Items] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Class of Stock Class of Stock [Axis] Net carrying amount Net carrying amount Intangible Asset, Finite-Lived, after Accumulated Amortization Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Other Investments [Abstract] Other Investments [Abstract] Accumulated amortization Intangible Asset, Finite-Lived, Accumulated Amortization Receivable [Domain] Receivable [Domain] Level 2 inputs Fair Value, Inputs, Level 2 [Member] Other expenses (income): Nonoperating Income (Expense) [Abstract] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Current maturities Long-Term Debt, Current Maturities Dividends Dividends [Domain] Subsequent Event Type Subsequent Event Type [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Treasury stock, value Treasury stock, value Treasury Stock, Value New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Transportation and lease equipment purchases in accounts payable Capital Expenditures Incurred but Not yet Paid Summary of Segment Reporting Information Segment Reporting [Table Text Block] Gains on sales of property and equipment—net Gain (Loss) on Disposition of Property Plant Equipment Receivables Purchase Agreement Receivables Purchase Agreement [Member] Receivables Purchase Agreement [Member] Total other comprehensive income (loss)—net Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Repayments of lines of credit Repayments of Lines of Credit Total principal outstanding Long-Term Debt Document Period End Date Document Period End Date Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Compensation Expense, Excluding Cost of Good and Service Sold Compensation Expense, Excluding Cost of Good and Service Sold Preferred stock, shares outstanding (shares) Preferred Stock, Shares Outstanding Basic earnings per common share Earnings Per Share, Basic [Abstract] Common Equity Equity [Text Block] Mastery Logistics Mastery Logistics [Member] Mastery Logistics Operating expenses: Costs and Expenses [Abstract] Security Exchange Name Security Exchange Name Short Term Note Receivable Short Term Note Receivable [Member] Short Term Note Receivable Leases - Lessee Lessee, Lease, Description [Line Items] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Class B Common Stock Common Class B [Member] Consolidation Items Consolidation Items [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Net investment in leases Sales-Type Lease, Net Investment in Lease, before Allowance for Credit Loss Name Outstanding Recovery, Individual Name Proceeds from marketable securities Proceeds from Sale and Maturity of Marketable Securities Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total Liabilities Liabilities Trading Symbol Trading Symbol Timing of payment after completion of performance obligations Revenue, Performance Obligation, Description of Payment Terms Purchases of transportation equipment Payments to Acquire Property, Plant, and Equipment Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Lease payments Total minimum lease payments to be received Sales-Type and Direct Financing Leases, Payment to be Received Intermodal [Member] Intermodal [Member] Intermodal. Company Selected Measure Name Company Selected Measure Name Schedule of Investment In Lease Receivables Schedule Of Investment In Lease Receivables [Table Text Block] Schedule of investment in lease receivables. Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Award Date [Axis] Award Date [Axis] Diluted earnings per common share Earnings Per Share, Diluted [Abstract] Noncash investing and financing activity: Noncash Investing and Financing Items [Abstract] Investment in equity security Equity Securities, FV-NI, Cost Credit Facility [Domain] Credit Facility [Domain] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Noncompete Agreements Noncompete Agreements [Member] Other receivables Other Receivables, Net, Current Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Weighted average diluted shares outstanding Weighted average diluted shares outstanding Weighted Average Number of Shares Outstanding, Diluted Disaggregation of Revenue Disaggregation of Revenue [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Other property and equipment Property, Plant, and Equipment, Other, before Accumulated Depreciation Proceeds from lines of credit Proceeds from Lines of Credit Dividends declared but not yet paid Dividends Payable Additional Cash Flow Information: Additional Cash Flow Elements [Abstract] Award Date [Domain] Award Date [Domain] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Investment in equity security Equity Securities without Readily Determinable Fair Value, Current Period Amount Amount of investment in the current period in equity security without readily determinable fair value. Current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Terms of sales-type lease Lessor, Sales-type Lease, Term of Contract Operating cash flows for operating leases Operating Lease, Payments Award Timing Predetermined Award Timing Predetermined [Flag] Treasury Stock Treasury Stock, Common [Member] Intangible Asset, Goodwill and Other [Abstract] Intangible Asset, Goodwill and Other [Abstract] Standby letters of credit Letters of Credit Outstanding, Amount Available for Sale Debt Securities Debt Securities, Available-for-Sale [Line Items] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Share-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Corporate And Reconciling Items Corporate And Reconciling Items [Member] Corporate And Reconciling Items Level 1 inputs Fair Value, Inputs, Level 1 [Member] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Lessee, Lease, Description [Table] Lessor, Lease, Description [Table] Dilutive effect of share-based awards and options outstanding Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Debt Securities, Available-for-sale [Abstract] Debt Securities, Available-for-Sale [Abstract] Financing Receivable, Including Accrued Interest Financing Receivable, Including Accrued Interest Financing Receivable, Including Accrued Interest All Executive Categories All Executive Categories [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Preferred stock, par value (usd per share) Preferred Stock, Par or Stated Value Per Share Plan Name [Domain] Plan Name [Domain] Note receivable, short term Financing Receivable, before Allowance for Credit Loss, Current Calculation of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Current maturities of debt and finance lease obligations Long-Term Debt and Lease Obligation, Current Segment Reporting Segment Reporting [Text Block] Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] Expiration Date Trading Arrangement Expiration Date Current portion of lease receivables—net of allowance of $0.8 million Sales-Type Lease, Net Investment in Lease, after Allowance for Credit Loss, Current Fair value of marketable securities Investments, Fair Value Disclosure Cost of goods sold Cost of Goods Sold, Sales-type Lease Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Transportation Transportation [Member] Transportation [Member] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Axis] Schedule of Common Shares Outstanding Roll Forward Schedule of Common Stock Outstanding Roll Forward [Table Text Block] Business Combination Business Combination [Line Items] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Common stock, shares authorized (shares) Common Stock, Shares Authorized Exercise Price Award Exercise Price Recurring fair value measurements Fair Value, Recurring [Member] Segment Reporting Segment Reporting [Line Items] Stock repurchase program - amount authorized Share Repurchase Program, Authorized, Amount Pre-tax unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Document Quarterly Report Document Quarterly Report Logistics Management Logistics Management [Member] Logistics Management [Member] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Segments Segments [Domain] State and municipal bonds US States and Political Subdivisions Debt Securities [Member] Debt and Credit Facilities Debt Disclosure [Text Block] Schedule of Marketable Securities Marketable Securities [Table Text Block] Claims accruals—noncurrent Accrued Insurance, Noncurrent Potential increase amount Credit Facility, Potential Increase Amount Credit Facility, Potential Increase Amount that is available upon our request Debt issuance costs, net Debt Issuance Costs, Net Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity Method Investments Equity Method Investments Business Combination [Table] Business Combination [Table] Equity Component Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Other Insurance Other Insurance [Member] Other Insurance [Member] Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Trade accounts payable Accounts Payable, Trade, Current Total operating expenses Costs and Expenses Adoption Date Trading Arrangement Adoption Date Total Shareholders' Equity Balance Balance Equity, Attributable to Parent Total other expenses—net Nonoperating Expense Nonoperating Income (Expense) Assets Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Amortized cost Debt Securities, Available-for-Sale, Amortized Cost Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Insider Trading Policies and Procedures [Line Items] Other financing activities Proceeds from (Payment for) Other Financing Activity Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Deferred income taxes Deferred Income Tax Expense (Benefit) Cash paid during the period for: Cash Paid During Year For [Abstract] Cash paid during year for. Business Combination Business Combination [Domain] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Anti-dilutive share-based awards and options excluded from computation of diluted earnings per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Financial Asset, Period Past Due [Domain] Financial Asset, Aging [Domain] Entity Central Index Key Entity Central Index Key Less accumulated depreciation Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization All Adjustments to Compensation All Adjustments to Compensation [Member] Business Combination Business Combination [Axis] Equity [Abstract] Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Investments in notes receivable Payments to Acquire Notes Receivable Shareholders’ Equity: Equity, Attributable to Parent [Abstract] Loss on investments in equity securities—net Increase (Decrease) in Equity Securities, FV-NI Document Transition Report Document Transition Report Ownership Ownership [Axis] Net investment in leases Sales-Type Lease, Net Investment in Lease, after Allowance for Credit Loss Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Axis] Investment, Name [Axis] Investment, Name [Axis] Intersegment Eliminations Intersegment Eliminations [Member] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Intangible Asset, Finite-Lived Intangible Asset, Finite-Lived [Table Text Block] Leases - Lessor Lessor, Lease, Description [Line Items] City Area Code City Area Code Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Trade accounts receivable allowance Accounts Receivable, Allowance for Credit Loss and Revenue Adjustments, Current Accounts Receivable, Allowance for Credit Loss and Revenue Adjustments, Current Document Information [Table] Document Information [Table] All Individuals All Individuals [Member] Fair value of debt Debt Instrument, Fair Value Disclosure Dividends paid Payments of Dividends Name Forgone Recovery, Individual Name Unrecognized compensation cost, period for recognition Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Fuel Surcharge Revenue Fuel Surcharge Revenue Fuel Surcharge Revenue Total noncurrent assets Assets, Noncurrent Statement [Line Items] Statement [Line Items] Total Assets Assets Logistics Logistics [Member] Logistics. Preferred stock, shares issued (shares) Preferred Stock, Shares Issued Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Operating Segments Operating Segments [Member] Interest expense, nonoperating Interest Expense, Nonoperating O 2026 Q3 Dividends O 2026 Q3 Dividends [Member] O 2026 Q3 Dividends Value of investments without readily determinable fair values Equity Securities without Readily Determinable Fair Value, Amount Share-based Payment Arrangement Share-Based Payment Arrangement [Text Block] Other assets Increase (Decrease) in Other Operating Assets Share issuances Stock Issued During Period, Shares, New Issues Nature of Operations Nature of Operations [Text Block] PEO PEO [Member] Total debt and credit facilities Debt, Long-Term and Short-Term, Combined Amount Share-based compensation expense Share-Based Payment Arrangement, Expense Repurchases of common stock Stock Repurchased and Retired During Period, Shares Lease terms of leases not yet commenced Lessee, Lease Not yet Commenced, Term of Contract Lessee, Lease Not yet Commenced, Term of Contract Marketable securities Marketable Securities, Current Other noncurrent liabilities Other Liabilities, Noncurrent Goodwill Goodwill Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Exercise of employee stock options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Reporting Unit [Axis] Reporting Unit [Axis] Subsequent Event Type Subsequent Event Type [Domain] Retained Earnings Retained Earnings [Member] Revision of Prior Period [Domain] Revision of Prior Period [Domain] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Common stock, shares outstanding (shares) Common shares outstanding Common shares outstanding Common Stock, Shares, Outstanding Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Net unrealized gains (losses) on marketable securities—net of tax OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Award Timing Disclosures [Line Items] Disaggregation of Revenue [Abstract] Disaggregation of Revenue [Abstract] Lessee, Lease Not Yet Commenced, Amount Lessee, Lease Not Yet Commenced, Amount Lessee, Lease Not Yet Commenced, Amount Corporate debt securities Corporate Debt Securities [Member] Diluted earnings per share Diluted earnings per share Earnings Per Share, Diluted Entity Current Reporting Status Entity Current Reporting Status Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Abstract] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Abstract] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Abstract] Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Shares withheld for employee taxes Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Amortization of intangible assets Intangible Asset, Finite-Lived, Amortization Expense Intangible Asset, Finite-Lived Intangible Asset, Finite-Lived [Line Items] Ownership [Domain] Ownership [Domain] Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Financing Activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Net property and equipment Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization 2017 Omnibus Incentive Plan 2017 Omnibus Incentive Plan [Member] 2017 Omnibus Incentive Plan Maturity year Debt Instrument Maturity Year Debt instrument maturity year. Schedule of Sales-type Lease Income Sales-type Lease, Lease Income [Table Text Block] Financial Instruments [Domain] Financial Instruments [Domain] Other Income Other Income Sales-type Leases Lessor, Sales-type Leases [Text Block] Intangible Asset, Finite-Lived, Class Intangible Asset, Finite-Lived, Class [Axis] Exercise of employee stock options Stock Issued During Period, Value, Stock Options Exercised Segment Reporting, as if Old Segmentation Basis [Domain] Segment Reporting, as if Old Segmentation Basis [Domain] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Goodwill and Other Intangibles Disclosure Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount Revenue from Contract with Customer Revenue from Contract with Customer [Text Block] Share issuances Stock Issued During Period, Value, New Issues Proceeds from sale of off-lease inventory Proceeds from sale of off-lease inventory Proceeds from sale of off-lease inventory Subsegments Subsegments [Domain] Payments of debt and finance lease obligations Repayments of Debt and Lease Obligation Payables Increase (Decrease) in Risk Management Assets and Liabilities Subsegments Subsegments [Axis] Preferred Stock Preferred Stock [Member] Other Investments Equity Securities without Readily Determinable Fair Value [Line Items] Segment Reporting [Table] Segment Reporting [Table] Repurchase Program 2026 Repurchase Program 2026 [Member] Repurchase Program 2026 Investing Activities: Cash Provided by (Used in) Investing Activity, Continuing Operation [Abstract] Schedule of Lease Information Lease, Cost [Table Text Block] Weighted-average interest rate Long-Term Debt, Weighted Average Interest Rate, at Point in Time Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Continuing Operation [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Income from operations Income from operations Operating Income (Loss) Platform Science Inc. Platform Science Inc. [Member] Platform Science Inc. Remaining Performance Obligation Revenue, Remaining Performance Obligation, Amount Current Fiscal Year End Date Current Fiscal Year End Date Truckload Truckload [Member] Truckload. Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Segment Reporting, as if Old Segmentation Basis [Axis] Segment Reporting, as if Old Segmentation Basis [Axis] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Dividends declared per share Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Transportation equipment Machinery and Equipment, Gross Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Common stock, shares issued (shares) Common Stock, Shares, Issued Measure: Measure [Axis] Revenues excluding fuel surcharge Revenues excluding fuel surcharge Revenues excluding fuel surcharge Treasury stock, common, shares Treasury Stock, Common, Shares Credit loss allowance Debt Securities, Available-for-Sale, Allowance for Credit Loss Unsecured Senior Notes Unsecured Senior Notes [Member] Unsecured senior notes. Equity Components [Axis] Equity Components [Axis] Product and Service [Domain] Product and Service [Domain] Class of Stock Class of Stock [Line Items] Income taxes—net of refunds Income Tax Paid, after Refund Received Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Class A Common Shares Common Class A [Member] Entity Interactive Data Current Entity Interactive Data Current Deferred income taxes Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Termination Date Trading Arrangement Termination Date Shares withheld for employee taxes Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Lease receivables Sales-Type Lease, Net Investment in Lease, after Allowance for Credit Loss, Noncurrent Fair Value, Recurring and Nonrecurring Fair Value, Recurring and Nonrecurring [Table] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Internal-use software and other noncurrent assets Other Assets, Noncurrent Document Type Document Type Fair Value, Assets Measured on Recurring Basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value as of Grant Date Award Grant Date Fair Value Scope 23 Scope 23 [Member] Scope 23 Schedule of Goodwill [Table] Goodwill [Table] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Operating supplies and expenses—net Operating Costs and Expenses Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Proceeds from issuance of long-term debt Proceeds from Issuance of Long-Term Debt Local Phone Number Local Phone Number Lease receivables allowance Sales-type Lease, Net Investment in Lease, Allowance for Credit Loss Consolidation Items Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Purchases of other property and equipment Payments to Acquire Other Productive Assets Expected to be recognized within one year Expected to be recognized within one year [Member] Expected to be recognized within one year [Member] Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Line of Credit Facility, Expiration Date Line of Credit Facility, Expiration Date Gross carrying amount Intangible Asset, Finite-Lived, before Accumulated Amortization Operating revenues Operating revenues Revenues Total property and equipment Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Receivable Type [Axis] Receivable Type [Axis] Liabilities and Shareholders’ Equity Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class Intangible Asset, Finite-Lived, Class [Domain] Inventories—net Inventory, Net Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Fair Value Fair Value Disclosures [Text Block] Revenue Sales-type Lease, Revenue 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] PEO Name PEO Name Guaranteed residual lease values Sales-type Lease, Residual Value of Leased Asset Contract liabilities Contract with Customer, Liability Segment Reporting, Other Segment Item, Amount Segment Reporting, Other Segment Item, Amount Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Notes receivable Financing Receivable, before Allowance for Credit Loss, Noncurrent Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Repurchases of common stock Treasury Stock, Value, Acquired, Cost Method Cash and cash equivalents, beginning balance Cash and cash equivalents, ending balance Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Maturity date Debt Securities, Available-for-Sale, Maturity Date Claims reserves and receivables—net Increase (Decrease) in Accounts Payable Other current liabilities Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Purchased transportation Purchased Transportation Costs incurred during the period for independent contractors and other third-party service providers to provide transportation services. Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Past Due Past Due [Member] Past Due Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] General Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Debt Instrument [Axis] Debt Instrument [Axis] Measurement Frequency Measurement Frequency [Domain] Reporting Unit [Domain] Reporting Unit [Domain] Ownership interest in investment Equity Method Investment, Ownership Percentage Long-term incentive and share-based compensation expense Share-Based Payment Arrangement, Noncash Expense 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Dividends declared Dividends, Cash Salaries, wages, and benefits Labor and Related Expense Subsegments Consolidation Items [Domain] Subsegments Consolidation Items [Domain] Investment, Name [Domain] Investment, Name [Domain] Operating Leases Lessee, Operating Leases [Text Block] Basic earnings per share Basic earnings per share Earnings Per Share, Basic Repurchases of common stock Payments for Repurchase of Common Stock Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Long-term debt Long-Term Debt, Excluding Current Maturities Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Trade accounts receivable—net of allowance of $5.2 million and $6.0 million, respectively Accounts Receivable, after Allowance for Credit Loss, Current Retained earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Fair value Debt Securities, Available-for-Sale Other Other [Member] Other [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Investment in equity method investment Equity Method Investment, Aggregate Cost Upward adjustments Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount Equity Investments without Readily Determinable Fair Values Equity Securities without Readily Determinable Fair Value [Table Text Block] Equity Awards Adjustments Equity Awards Adjustments [Member] Past due Financial Asset, Past Due [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Purchases of lease equipment Payments to Acquire Equipment on Lease Total Liabilities and Shareholders’ Equity Liabilities and Equity Interest income Interest Income, Other Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segments Segments [Axis] Other liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Plan Name Plan Name [Axis] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Fair value of equity investment in TuSimple Equity Securities, FV-NI, Noncurrent Other expenses—net Other Nonoperating Income (Expense) 2031 and thereafter Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Five Equity Securities without Readily Determinable Fair Value Equity Securities without Readily Determinable Fair Value [Table] 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three Remaining 2026 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Purchased transportation, fuel, and fuel taxes Purchased transportation, fuel, and fuel taxes Purchased transportation, fuel, and fuel taxes Noncurrent Assets: Assets, Noncurrent [Abstract] Property and equipment: Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization [Abstract] Preferred stock, shares authorized (shares) Preferred Stock, Shares Authorized Preferred stock Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Class of Stock Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Operating cash flows for finance leases Finance Lease, Interest Payment on Liability Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Other general expenses Other General Expense Credit Facility [Axis] Credit Facility [Axis] Land, buildings, and improvements Land Buildings And Improvements Land buildings and improvements. Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Frequency of payments Debt Instrument, Frequency of Periodic Payment Long-term debt and finance lease obligations Long-Term Debt and Lease Obligation Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Domain] Other noncash items—net Other Noncash Income (Expense) Debt Instrument Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Other Corporate Segment and Other Operating Segment [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Dividends Dividends [Axis] Revision of Prior Period [Axis] Revision of Prior Period [Axis] Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Interest income on lease receivables Sales-type Lease, Interest Income, Lease Receivable Company Selected Measure Amount Company Selected Measure Amount Financial Asset, Period Past Due [Axis] Financial Asset, Aging [Axis] Depreciation, Depletion and Amortization Depreciation, Depletion and Amortization Investments, Debt and Equity Securities [Abstract] Schedule of common stock outstanding Stock, Class of Stock [Table] Right-of-use assets obtained in exchange for new finance lease liability Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Current Assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Right-of-use assets obtained in exchange for new operating lease liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Provision for income taxes Income Tax Expense (Benefit) Award Timing Method Award Timing Method [Text Block] Principles of Consolidation and Basis of Presentation Consolidation, Policy [Policy Text Block] Net increase in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Proceeds from lease receipts Proceeds from Lease Payment, Operating Activity Fuel and fuel taxes Fuel Costs Net income Net income Net income available to common shareholders Net Income (Loss) Attributable to Parent Unearned income Sales-type Lease, Unearned Income Sales-type Lease, Unearned Income Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Balance Sheet Location [Axis] Location, Statement of Financial Position, Balance [Axis] Proceeds from sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Remaining Performance Obligations Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Contract Balances Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Receivables Increase (Decrease) in Receivables Debt Instruments [Abstract] Debt Instruments [Abstract] Contract assets Contract with Customer, Asset, before Allowance for Credit Loss Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]