Type of Brand [Domain] Type of Brand [Domain] Type of Brand [Domain] Adjustments to reconcile net income to net cash provided by operating activities— Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Stock repurchase program, remaining authorized repurchase amount Share Repurchase Program, Remaining Authorized, Amount Total debt outstanding Long-Term Debt and Lease Obligation, Including Current Maturities Contract assets, current Contract with Customer, Asset, after Allowance for Credit Loss, Current Components of Inventory [Axis] Components of Inventory [Axis] Components of Inventory Cover [Abstract] Cover [Abstract] Total debt securities Debt Securities [Member] Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Floor plan borrowings—non-trade Proceeds From Floor Plan Borrowings Non Trade Borrowings of floorplan notes payable to parties other than the manufacturer of the new vehicle and all floorplan notes payable related to pre-owned vehicles. Intangible Asset, Indefinite-Lived [Table] Intangible Asset, Indefinite-Lived [Table] Reduction to cost of sales Reduction to New Vehicle Cost of Sales by Automobile Manufacturer Incentives Reduction to New Vehicle Cost of Sales by Automobile Manufacturer Incentives Floor plan repayments—divestitures Repayments Of Floor Plan Payables Non Trade Divestitures Repayment of floor plan payables non trade associated with the sale of the related franchise. Trading Symbol Trading Symbol Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] All Trading Arrangements All Trading Arrangements [Member] LONG-TERM DEBT Long-Term Debt and Lease Obligation Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Non-NEOs Non-NEOs [Member] 2021 BofA Real Estate Facility 2021 BofA Real Estate Facility [Member] 2021 BofA Real Estate Facility Operating lease liabilities Disposal Group, Including Discontinued Operation, Operating Lease Liabilities Disposal Group, Including Discontinued Operation, Operating Lease Liabilities Share Repurchases Share Repurchase Policy [Policy Text Block] Share Repurchase Policy [Policy Text Block] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Derivative [Line Items] Derivative [Line Items] Assets: Disposal Group, Including Discontinued Operation, Assets [Abstract] Income taxes paid, net Income Taxes Paid, Net 5.00% Senior Notes due 2032 Five Point Zero Zero Percent Percent Senior Notes due 2029 [Member] Five Point Zero Zero Percent Percent Senior Notes due 2029 Less—Allowance for credit losses Accounts Receivable, Allowance for Credit Loss, Current Disclosure of Long-Lived Assets Held-for-Sale Disclosure of Long-Lived Assets Held-for-Sale [Table Text Block] Fair value of interest rate swaps Interest Rate Cash Flow Hedge Derivative at Fair Value, Net Pay vs Performance Disclosure [Line Items] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Short-term investments Short-Term Investments [Member] Change in fair value of cash flow swaps, tax expense (benefit) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax Accounts receivable Increase (Decrease) in Accounts Receivable Derivative [Table] Derivative [Table] Earnings per Share Earnings Per Share, Policy [Policy Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Interest Rate Swap, July 20 Interest Rate Swap, July 2020 [Member] Interest Rate Swap 1.1 [Member] Schedule of Derivative Instruments Fair Value Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Award Timing Disclosures [Line Items] Other long-term assets and liabilities, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Components of Inventory [Domain] Component of Inventory [Domain] Component of Inventory [Domain] Other Performance Measure, Amount Other Performance Measure, Amount Other receivables Other Trade Accounts Receivable [Member] Other Trade Accounts Receivable [Member] Results Recognized in Accumulated Other Comprehensive Income/(Loss) (Effective Portion) OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Collision centers to be acquired Business Combination, Collision Centers To Be Acquired Business Combination, Collision Centers To Be Acquired LONG-TERM LEASE LIABILITY Operating Lease, Liability, Noncurrent Interest receivable Interest Receivable Floor plan interest expense Floor Plan interest Expense Interest expense incurred on vehicle floorplan payable trade and non-trade outstanding during the period. Property and equipment, net Disposal Group, Including Discontinued Operation, Property, Plant and Equipment Finance and insurance, net Finance And Insurance, Net [Member] Finance And Insurance, Net Debt securities, available-for-sale, realized loss Debt Securities, Available-for-Sale, Realized Loss Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Deferred revenue—current Contract with Customer, Liability, Current TCA TCA [Member] TCA OTHER LONG-TERM ASSETS Other Assets, Noncurrent Entity Tax Identification Number Entity Tax Identification Number New Vehicle Floor Plan Facility New Vehicle Floor Plan Facility [Member] New Vehicle Floor Plan Facility [Member] Schedule of Long-term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Shares repurchased (in shares) Treasury Stock, Shares, Acquired 2018 Wells Fargo Master Loan Facility 2018 Wells Fargo Master Loan Facility [Member] 2018 Wells Fargo Master Loan Facility [Member] ACCOUNTS RECEIVABLE Loans, Notes, Trade and Other Receivables Disclosure [Text Block] INVESTMENTS Investments Noncurrent Investments Noncurrent Sale of vehicle parts and accessories Sale of vehicle parts and accessories [Member] Sale of vehicle parts and accessories [Member] Operating Segments Operating Segments [Member] Receivable Type [Axis] Receivable Type [Axis] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOW FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Treasury Stock Treasury Stock, Common [Member] Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] U.S. Treasury US Treasury Securities [Member] Intersegment Eliminations Intersegment Eliminations [Member] Floor plan notes payable—trade Floor Plan Notes Payable Trade, Gross Floor Plan Notes Payable Trade, Gross SOUTH CAROLINA SOUTH CAROLINA Equity Components [Axis] Equity Components [Axis] Other current assets Other Assets, Current Award Timing Method Award Timing Method [Text Block] Total by maturity Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Fair Value Debt Securities, Available-for-Sale Measurement Frequency [Axis] Measurement Frequency [Axis] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Purchases of previously leased real estate Payments to Acquire Previously Leased Real Estate Payments to Acquire Previously Leased Real Estate Insider Trading Policies and Procedures [Line Items] Proceeds from dealership divestitures Proceeds from Divestiture of Businesses Use of Estimates Use of Estimates, Policy [Policy Text Block] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Receivable [Domain] Receivable [Domain] Adjustment to Compensation, Amount Adjustment to Compensation Amount Investments [Domain] Investments [Domain] Domestic Brands Domestic Brands [Member] Domestic Brands [Member] Additional paid-in capital Additional Paid in Capital, Common Stock Payables and Accruals [Abstract] Payables and Accruals [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Diluted— Earnings Per Share, Diluted [Abstract] Amount of surety bond line maintained Amount of Surety Bond Line Maintained Amount of Surety Bond Line maintained in the ordinary course of business. Disposal Group Classification [Axis] Disposal Group Classification [Axis] Number of states (in states) Number of States in which Entity Operates 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] Entity Small Business Entity Small Business Company Selected Measure Amount Company Selected Measure Amount Results Reclassified from Accumulated Other Comprehensive Income/(Loss) to Earnings Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net Geographical [Axis] Geographical [Axis] Capital expenditures—real estate Payments to Acquire Real Estate Tabular List, Table Tabular List [Table Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Results Recognized in Accumulated Other Comprehensive Income/(Loss) (Effective Portion) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax Gain on dealership divestitures, net Gain on divestitures, net Gain on divestitures, net Gain (Loss) on Disposition of Business Accounts receivable, net Accounts receivable, net Receivables, Net, Current 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] Interest Rate Swap, January 2022 Interest Rate Swap, January 2022 [Member] Interest Rate Swap, January 2022 Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Total fair value Debt Securities, Available-for-Sale, Unrealized Loss Position Credit Facility [Domain] Credit Facility [Domain] Cash and cash equivalents CASH AND CASH EQUIVALENTS, beginning of period CASH AND CASH EQUIVALENTS, end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Accounts and Financing Receivables [Table] Accounts and Financing Receivables [Table] Number of dealership locations, sold (in dealership locations) Number Of Dealership Locations, Sold Number Of Dealership Locations, Sold Herb Chambers Dealerships Herb Chambers Dealerships [Member] Herb Chambers Dealerships INTANGIBLE FRANCHISE RIGHTS Indefinite-Lived Franchise Rights CURRENT ASSETS: Assets, Current [Abstract] GOODWILL Goodwill Goodwill Consolidation Items [Axis] Consolidation Items [Axis] Bank of America, N.A. Bank of America, N.A. [Member] Bank of America, N.A. [Member] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Other comprehensive income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Used vehicle retail Used vehicle retail [Member] Used vehicle retail [Member] Stock repurchase program, authorized amount Share Repurchase Program, Authorized, Amount INVENTORIES Inventory Disclosure [Text Block] Treasury stock (in shares) Treasury stock, beginning balance (in shares) Treasury stock, ending balance (in shares) Treasury Stock, Common, Shares Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Interest payments made including amounts capitalized Interest Paid, Including Capitalized Interest, Operating and Investing Activities Product and Service [Domain] Product and Service [Domain] Employee Stock Option Share-Based Payment Arrangement, Option [Member] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-Sale [Table] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Number of franchises, sold (in franchises) Number of Franchises, Sold Number of Franchises, Sold Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Repayments of revolving credit facility Repayments of Lines of Credit Municipal Municipal Bonds [Member] Security Exchange Name Security Exchange Name Schedule of Amortized Cost and Fair Value of TCA's Investment Investments Classified by Contractual Maturity Date [Table Text Block] Award Type [Axis] Award Type [Axis] Corporate Corporate Debt Securities [Member] Floor plan notes payable—used non-trade Floor Plan Notes Payable Non Trade, Used, Gross Floor Plan Notes Payable Non Trade, Used, Gross Stock repurchase program, increase (decrease) in authorized amount Stock Repurchase Program, Increase (Decrease) In Authorized Amount Stock Repurchase Program, Increase (Decrease) In Authorized Amount Basic— Earnings Per Share, Basic [Abstract] Liabilities: Disposal Group, Including Discontinued Operation, Liabilities [Abstract] Gain (Loss) on Securities [Line Items] Gain (Loss) on Securities [Line Items] PROPERTY AND EQUIPMENT, net Property, Plant and Equipment, Net 4.625% Senior Notes due 2029 Four Point Six Two Five Percent Senior Notes due 2029 [Member] Four Point Six Two Five Percent Senior Notes due 2029 Personnel costs Labor and Related Expense Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Schedule of Debt Securities, Available-for-Sale Debt Securities, Available-for-Sale [Table Text Block] Revolving Credit Facility Revolving Credit Facility [Member] Expiration Date Trading Arrangement Expiration Date CASH FLOW FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Transferred to receivables from contract assets recognized at the beginning of the period Contract with Customer, Asset, Reclassified to Receivable Current maturities of operating leases Operating Lease, Liability, Current Total Shareholder Return Amount Total Shareholder Return Amount Common stock, shares issued (in shares) Common Stock, Shares, Issued Due after 10 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Results Reclassified from Accumulated Other Comprehensive Income/(Loss) to Earnings Debt Securities, Available-for-Sale, Loss Reclassified from Accumulated OCI into Income, Effective Portion Debt Securities, Available-for-Sale, Loss Reclassified from Accumulated OCI into Income, Effective Portion Total assets held for sale Disposal Group, Including Discontinued Operation, Assets Total unrealized losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Debt securities, available-for-sale, realized gain Debt Securities, Available-for-Sale, Realized Gain Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Floor plan notes payable offset account Floor Plan Notes Payable Trade, Offsets Floor Plan Notes Payable Trade, Offsets Debt Instrument [Line Items] Debt Instrument [Line Items] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Long-term debt, including current portion Long Term Debt and Lease Obligations, Including Unamortized Premium (Discount) Long Term Debt and Lease Obligations, Including Unamortized Premium (Discount) Common stock, shares authorized (in shares) Common Stock, Shares Authorized Loaners, net Disposal Group, Including Discontinued Operation, Loaners Disposal Group, Including Discontinued Operation, Loaners Floor plan notes payable—new non-trade Floor Plan Notes Payable Non Trade, New, Gross Floor Plan Notes Payable Non Trade, New, Gross Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Unrealized gain on changes in fair value of debt securities, net of reclassification adjustment and tax expense OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Notional Principal at Inception Derivative Liability, Notional Amount Consideration to be transferred Business Combination, Consideration To Be Transferred Business Combination, Consideration To Be Transferred MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Total shareholders' equity Beginning balance Ending balance Equity, Attributable to Parent Treasury stock, at cost; 22,108,258 and 22,065,478 shares, respectively Treasury Stock, Value Due in 1 year or less Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Statement of Financial Position Location, Balance [Axis] Statement of Financial Position Location, Balance [Axis] Floor Plan Notes Payable [Table] Floor Plan Notes Payable [Table] Floor Plan Notes Payable [Table] Incremental common shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares Amount of letters of credit outstanding Letters of Credit Outstanding, Amount Selling, general, and administrative Selling, General and Administrative Expense Components of Inventory [Line Items] Components of Inventory [Line Items] Components of Inventory [Line Items] Recurring Fair Value, Recurring [Member] Number of assets held-for-sale Number Of Assets Held-For-Sale Number Of Assets Held-For-Sale 12 months or longer, fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Asset impairments Asset impairments Asset Impairment Charges Assets held for sale Asset, Held-for-Sale, Not Part of Disposal Group, Current Long-term Debt Long-Term Debt Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Debt instrument, conversion, maximum convertible amount, amount subtracted from contractual total Debt Instrument, Conversion, Maximum Convertible Amount, Amount Subtracted from Contractual Total Debt Instrument, Conversion, Maximum Convertible Amount, Amount Subtracted from Contractual Total Document Fiscal Period Focus Document Fiscal Period Focus Operating lease right-of-use assets Disposal Group, Including Discontinued Operation, Operating Lease ROU Assets Disposal Group, Including Discontinued Operation, Operating Lease ROU Assets All Executive Categories All Executive Categories [Member] Liabilities associated with assets held for sale Disposal Group, Including Discontinued Operation, Liabilities, Current Statement of Financial Position Location, Balance [Domain] Statement of Financial Position Location, Balance [Domain] Total accounts receivable Accounts Receivable, before Allowance for Credit Loss, Current 4.75% Senior Notes due 2030 Four Point Seven Five Percent Senior Notes due 2030 [Member] Four Point Seven Five Percent Senior Notes due 2030 [Member] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] ACQUISITIONS AND DIVESTITURES Mergers, Acquisitions and Dispositions Disclosures [Text Block] ASSETS Assets [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Purchases of treasury stock Payments For Purchases Of Treasury Stock Payments For Purchases Of Treasury Stock Parts and service Parts and Services [Member] Parts and services [Member] Document Type Document Type Derivative Contract [Domain] Derivative Contract [Domain] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Schedule of Segment Reporting Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Wells Fargo Bank, National Association Wells Fargo Bank, National Association [Member] Wells Fargo Bank, National Association [Member] Increases related to revenue recognized, inclusive of adjustments to constraint, during the period Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress OTHER EXPENSES (INCOME): Other Income and Expenses [Abstract] Amortized Cost Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost Schedule of Contract with Customer, Assets Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Deferred revenue Contract with Customer, Liability Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Loaner Vehicle Floorplan Facility Loaner Vehicle Notes Payable - OEMs [Member] Loaner Vehicle Notes Payable - OEMs Investment Type [Axis] Investment Type [Axis] REVENUE: Revenues [Abstract] 2018 Bank of America Facility 2018 BofA Real Estate Facility [Member] 2018 BofA Real Estate Facility [Member] Current Fiscal Year End Date Current Fiscal Year End Date Short-term investments Short-Term Investments PEO Name PEO Name Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] INCOME BEFORE INCOME TAXES Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Award Type [Domain] Award Type [Domain] Name Outstanding Recovery, Individual Name Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Issuance of common stock, net of forfeitures in connection with share-based payment arrangements (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Goodwill, impairment loss Goodwill, Impairment Loss Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Non-PEO NEO Non-PEO NEO [Member] Goodwill Disposal Group, Including Discontinued Operation, Goodwill Investments, fair value Investments, Fair Value Disclosure Additional Paid-in Capital Additional Paid-in Capital [Member] Real estate and leasehold improvements to be acquired Business Combination, Recognized Identifiable Assets To Be Acquired and Liabilities To Be Assumed, Real Estate And Leasehold Improvements Business Combination, Recognized Identifiable Assets To Be Acquired and Liabilities To Be Assumed, Real Estate And Leasehold Improvements Schedule of Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Award Timing Predetermined Award Timing Predetermined [Flag] Deferred revenue Increase (Decrease) in Contract with Customer, Asset Subsequent Event Type [Domain] Subsequent Event Type [Domain] Amortization of costs incurred to obtain a contract with a customer Contract with Customer, Asset, Amortization of costs to obtain a contract with a customer Contract with Customer, Asset, Amortization of costs to obtain a contract with a customer Notes payable Notes Payable 2021 Real Estate Facility 2021 Real Estate Facility [Member] 2021 Real Estate Facility Deferred Revenue Location [Axis] Deferred Revenue Location [Axis] Deferred Revenue Location 2015 Wells Fargo Master Loan Facility 2015 Wells Fargo Master Loan Facility [Member] 2015 Wells Fargo Master Loan Facility [Member] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] FLOOR PLAN NOTES PAYABLE DEBT Long-Term Debt [Text Block] Net income (in dollars per share) Earnings Per Share, Diluted Name Measure Name Entity Interactive Data Current Entity Interactive Data Current Contracts-in-transit Increase (Decrease) in Contract with Customer, Liability Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Dealerships to be acquired Business Combination, Dealerships To Be Acquired Business Combination, Dealerships To Be Acquired Proceeds from the sale of debt securities—available-for-sale Proceeds from Sale of Debt Securities, Available-for-Sale Lexus Franchise Lexus Franchise [Member] Lexus Franchise Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Balance Sheet: Statement of Financial Position [Abstract] Luxury Brands Luxury Brands [Member] Luxury Brands [Member] Share-based compensation Share-Based Payment Arrangement, Noncash Expense Repayments of borrowings Repayments of Secured Debt Inventory Disposal Group, Including Discontinued Operation, Inventory Income tax expense Income Tax Expense (Benefit) Weighted brand mix (percent) Brand Mix Brand Mix Stated interest rate of debt instrument Stated interest rate of debt instrument Debt Instrument, Interest Rate, Stated Percentage Supplemental Cash Flow Information [Abstract] Supplemental Cash Flow Information [Abstract] Total other expenses, net Nonoperating Income (Expense) Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Number of collision repair centers (in collision repair centers) Number of Collision Repair Centers Number of Collision Repair Centers Number of instruments held Derivative, Number of Instruments Held Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities INCOME FROM OPERATIONS INCOME FROM OPERATIONS Operating Income (Loss) Franchise Rights Franchise Rights [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Number of reportable segments Number of Reportable Segments Total liabilities and shareholders' equity Liabilities and Equity Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Notional Principal at Maturity Derivative Liability, Notional Amount, at Maturity Derivative Liability, Notional Amount, at Maturity Schedule of Fair Value, Assets Measured on Recurring and Nonrecurring Basis Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block] Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Current maturities of long-term debt Less—current portion, net of debt issuance costs Long-Term Debt and Lease Obligation, Current Disposed of by sale Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Schedule of Long Lived Assets Held-for-sale [Table] Long-Lived Asset, Held-for-Sale [Table] Reduction of new vehicle inventory cost by automobile manufacturer incentives Inventory Adjustments Operating lease liabilities Operating Lease Liability, Operating Activities Operating Lease Liability, Operating Activities Underlying Security Market Price Change Underlying Security Market Price Change, Percent New vehicles New Vehicles [Member] New Vehicles Individual: Individual [Axis] Repurchase of common stock associated with net share settlement of employee share-based awards Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Inventories, net Total inventories Inventory, Net Total liabilities associated with assets held for sale Disposal Group, Including Discontinued Operation, Liabilities Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Product and Service [Axis] Product and Service [Axis] Entity Address, State or Province Entity Address, State or Province Statement [Line Items] Statement [Line Items] Gains (losses) on changes in fair value of debt securities, tax expense (benefit) OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax Dealerships Dealerships [Member] Dealerships Schedule of Components of Inventory [Table] Schedule of Components of Inventory [Table] Schedule of Components of Inventory [Table] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Floor Plan Notes Payable [Line Items] Floor Plan Notes Payable [Line Items] Floor Plan Notes Payable [Line Items] OPERATING EXPENSES: Operating Expenses [Abstract] Floor plan repayments—non-trade Repayments Of Floor Plan Payables Non Trade Repayments of floorplan notes payable to parties other than the manufacturer of the new vehicle and all floorplan notes payable related to pre-owned vehicles. Costs incurred to obtain a contract with a customer Contract with Customer, Costs to Obtain Contract Contract with Customer, Costs to Obtain Contract Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Financial Instruments [Domain] Financial Instruments [Domain] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities and Equity [Abstract] Unrealized gains (losses) on available-for-sale debt securities OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment and Tax Manufacturer receivables Manufacturer Receivables [Member] Manufacturer Receivables [Member] Deferred Sales Commissions Deferred Sales Commissions [Member] Deferred Sales Commissions FINANCIAL INSTRUMENTS AND FAIR VALUE Derivatives and Fair Value [Text Block] Contract assets, long-term Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent Restatement Determination Date Restatement Determination Date Fair Value: Estimate of Fair Value Measurement [Member] Parts and accessories Parts and accessories [Member] Parts and Accessories Adoption Date Trading Arrangement Adoption Date Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] DEFERRED REVENUE Contract with Customer, Liability, Noncurrent Schedule of Carrying Amounts of Investment Securities and Fair Values Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] Due in 5-10 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 OPERATING LEASE RIGHT-OF-USE ASSETS Operating Lease, Right-of-Use Asset Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Colorado COLORADO Segments [Axis] Segments [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] Schedule of Carrying Values and Fair Values of Liabilities Fair Value, Liabilities Measured on Recurring Basis [Table Text Block] Derivative Instrument [Axis] Derivative Instrument [Axis] Long-term debt, gross Long-Term Debt, Gross Exercise Price Award Exercise Price Other interest expense, net Other interest expense, net Interest Expense, Other Arrangement Duration Trading Arrangement Duration Schedule of Derivative Instruments Effect on Accumulated Other Comprehensive Income Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Subsequent Event Subsequent Event [Member] GOODWILL AND INTANGIBLE FRANCHISE RIGHTS Goodwill and Intangible Assets Disclosure [Text Block] Change in fair value of cash flow swaps Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax SHAREHOLDERS' EQUITY: Equity, Attributable to Parent [Abstract] Less than 12 months, fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Segments [Domain] Segments [Domain] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Finance lease liability Finance Lease, Liability All Individuals All Individuals [Member] Delaware DELAWARE Proceeds from revolving credit facility Proceeds from Lines of Credit PEO PEO [Member] Used vehicle Used Vehicle [Member] Used Vehicle Type of Brand [Axis] Type of Brand [Axis] Type of Brand [Axis] Name Trading Arrangement, Individual Name Dealership Location Dealership Location [Member] Dealership Location Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Receivables [Abstract] Receivables [Abstract] New and used vehicle New and Used Vehicle [Member] New and used vehicle [Member] Floor plan notes payable—trade, net Increase (Decrease) In Floor Plan Notes Payable Trade The net change during the reporting periods of floor plan notes payable with the manufacturer of new vehicles. Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax New vehicle New Vehicle [Member] New vehicle [Member] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Lender Name [Axis] Lender Name [Axis] 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] Current maturities of operating leases Disposal Group, Including Discontinued Operation, Operating Leases, Current Maturities Disposal Group, Including Discontinued Operation, Operating Leases, Current Maturities Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current Add—unamortized premium Debt Instrument, Unamortized Premium Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Loaner vehicle amortization Cost, Depreciation and Amortization Local Phone Number Local Phone Number Rent and related expenses Rent And Related Expenses Rent And Related Expenses Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Mortgage notes payable bearing interest at fixed rates Mortgages [Member] HTM, allowance Debt Securities, Held-to-Maturity, Allowance for Credit Loss DEFERRED INCOME TAXES Deferred Income Tax Liabilities, Net Other interest expense, net Interest Expense [Member] Other current assets Increase (Decrease) in Other Operating Assets Changes in operating assets and liabilities, net of acquisitions and divestitures— Increase (Decrease) in Operating Capital [Abstract] Income tax (expense) benefit associated with available-for-sale debt securities Other Comprehensive Income (Loss), Available-for-Sale Securities, Tax, Portion Attributable to Parent PEO Total Compensation Amount PEO Total Compensation Amount Statement of Income Location, Balance [Axis] Statement of Income Location, Balance [Axis] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Common Stock Common Stock [Member] Measure: Measure [Axis] Income tax benefit (expense) associated with cash flow swaps Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax, Parent Long-Lived Asset, Held-for-Sale, Type [Axis] Long-Lived Asset, Held-for-Sale, Type [Axis] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Other interest expense, net Floor Plan Interest Expense and Other Interest Expense [Member] Floor Plan Interest Expense and Other Interest Expense [Member] Line of Credit Line of Credit [Member] Number of dealership locations (in dealership locations) Number Of Dealership Locations Number Of Dealership Locations Entity Emerging Growth Company Entity Emerging Growth Company Indefinite-lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Segment Reporting [Abstract] Repurchase of common stock associated with net share settlements of employee share-based awards (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Entity Central Index Key Entity Central Index Key Other segment items Segment Reporting, Other Segment Item, Amount Loaner Vehicle Notes Payable - Bank of America Loaner Vehicle Notes Payable - Bank of America [Member] Loaner Vehicle Notes Payable - Bank of America Schedule of Inventory Schedule of Inventory, Current [Table Text Block] Guarantee Obligations Guarantee Obligations [Member] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Franchises to be acquired Business Combination, Franchises To Be Acquired Business Combination, Franchises To Be Acquired Discontinued Operations and Disposal Groups [Abstract] Discontinued Operations and Disposal Groups [Abstract] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Other selling, general and administrative expense Other Selling, General and Administrative Expense Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Equity Component [Domain] Equity Component [Domain] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Financial Instrument [Axis] Financial Instrument [Axis] SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Volvo Franchise Volvo Franchise [Member] Volvo Franchise Total Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Mortgage and other asset-backed securities Mortgage And Other Assets Backed Securities [Member] Mortgage And Other Assets Backed Securities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Entity Shell Company Entity Shell Company Measurement Basis [Axis] Measurement Basis [Axis] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Title Trading Arrangement, Individual Title Statement [Table] Statement [Table] Measurement Frequency [Domain] Measurement Frequency [Domain] Consolidation Items [Domain] Consolidation Items [Domain] Real Estate Real Estate [Member] City Area Code City Area Code CURRENT LIABILITIES: Liabilities, Current [Abstract] Interest payments made excluding amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Disposal Group Classification [Domain] Disposal Group Classification [Domain] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Level 1 Fair Value, Inputs, Level 1 [Member] Total current assets Assets, Current Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Senior Notes Senior Notes [Member] Schedule of Business Organization Schedule of Business Organization [Table] Schedule of Business Organization [Table] Repurchases of common stock, associated with net share settlements of employee share-based awards Payments for Repurchase of Common Stock Floor plan notes payable—non-trade, net Floor plan notes payable—non-trade, net Floor Plan Notes Payable Non Trade Amounts borrowed to finance the purchase of specific new and, to a lesser extent, used vehicle inventories with non-trade lenders (lenders that are not captive finance subsidiaries of the manufacturer). Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Interest rate swap, net gain amount expected to be reclassified in the next twelve months Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Due in 5-10 years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Subsequent Event Type [Axis] Subsequent Event Type [Axis] DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Retirement of common stock Stock Repurchased and Retired During Period, Value EARNINGS PER SHARE: Earnings Per Share [Abstract] Fair Value Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Retained earnings Retained Earnings (Accumulated Deficit) Interest Rate Swap, May 2021 Interest Rate Swap, May 2021 [Member] Interest Rate Swap, May 2021 Repurchase and retirement of common stock (in shares) Stock Repurchased and Retired During Period, Shares Number of franchises (in franchises) Number of Franchises Number of Franchises Inventories Increase (Decrease) in Inventories Treasury stock, retired (in shares) Treasury Stock, Shares, Retired Schedule of Floor Plan Notes Payable Schedule of Debt [Table Text Block] Change in right-of-use asset Change in Operating Lease, Right of Use Asset Change in Operating Lease, Right of Use Asset Floor plan notes payable offset account Floor Plan Notes Payable Non Trade, Offsets Floor Plan Notes Payable Non Trade, Offsets Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Underlying Securities Award Underlying Securities Amount INVESTMENTS Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Performance share units Performance Shares [Member] Number of vehicle brands (in vehicle brands) Number of Vehicle Brands Number of Vehicle Brands Credit Facility [Axis] Credit Facility [Axis] Capital expenditures—excluding real estate Payments to Acquire Property, Plant, and Equipment, Excluding Real Estate Payments to Acquire Property, Plant, and Equipment, Excluding Real Estate Amendment Flag Amendment Flag Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Long-term debt Long-Term Debt, Fair Value Carrying Value: Reported Value Measurement [Member] Entity Registrant Name Entity Registrant Name Nissan Franchise Nissan Franchise [Member] Nissan Franchise Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Depreciation and amortization Depreciation, Depletion and Amortization GROSS PROFIT Gross Profit Fair Value as of Grant Date Award Grant Date Fair Value Long Lived Assets Held-for-sale [Line Items] Long-Lived Assets Held-for-Sale [Line Items] SUPPLEMENTAL CASH FLOW INFORMATION Cash Flow, Supplemental Disclosures [Text Block] Level 2 Fair Value, Inputs, Level 2 [Member] Less—debt issuance costs Debt Issuance Costs, Net Due in 1 year or less Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Geographical [Domain] Geographical [Domain] Franchise Franchise [Member] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Franchise rights Disposal Group, Including Discontinued Operation, Intangible Assets Entity Address, Postal Zip Code Entity Address, Postal Zip Code Advertising Advertising Expense Interest Rate Swap Interest Rate Swap, January 2022 Interest Rate Swap [Member] Treasury stock acquired, excluding excise tax Treasury Stock, Value, Acquired, Cost Method, Excluding Excise Tax Treasury Stock, Value, Acquired, Cost Method, Excluding Excise Tax Restatement Determination Date: Restatement Determination Date [Axis] Business Organization [Line Items] Business Organization [Line Items] Business Organization [Line Items] Title of 12(b) Security Title of 12(b) Security Parts and service Parts And Service [Member] Parts And Service Common stock, $.01 par value; 90,000,000 shares authorized; 41,767,418 and 41,649,426 shares issued, including shares held in treasury, respectively Common Stock, Value, Issued 2023 Senior Credit Facility 2023 Senior Credit Facility [Member] 2023 Senior Credit Facility Impairment of franchise rights intangible assets Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) Other long-term assets Other Noncurrent Assets [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] Indefinite-lived Intangible Assets [Line Items] Indefinite-Lived Intangible Assets [Line Items] CASH FLOW FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Contracts-in-transit, net Contracts In Transit Contracts-in-transit represent receivables from third-party finance companies for the portion of new and used vehicle purchase price financed by customers through sources arranged by us. 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] Preferred stock, $.01 par value; 10,000,000 shares authorized; none issued or outstanding Preferred Stock, Value, Issued Mid-line Import Brands Mid-line Import Brands [Member] Mid-line Import Brands [Member] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Fair Value Measurement [Domain] Fair Value Measurement [Domain] Net income (in dollars per share) Earnings Per Share, Basic Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Loaner vehicles transferred from other current assets to inventory Loaner Vehicles, Amount Transferred from Other Current Assets to Inventory Loaner vehicles transferred from other current assets to inventory on the condensed consolidated balance sheets Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Held-for-sale Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Schedule of Unrealized Loss on Investments Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Total current liabilities Liabilities, Current 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] WEIGHTED AVERAGE SHARES OUTSTANDING: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Put right obligation, period following closing Business Combination, Put Right Obligation, Period Following Closing Business Combination, Put Right Obligation, Period Following Closing Total assets Assets Assets Reastated Credit Agreement Reastated Credit Agreement [Member] Reastated Credit Agreement [Member] Long-Lived Assets Held-for-Sale, Name [Domain] Long-Lived Assets Held-for-Sale, Name [Domain] OTHER LONG-TERM LIABILITIES Other Liabilities, Noncurrent Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount COMMITMENTS AND CONTINGENCIES (Note 13) Commitments and Contingencies Interest Rate Swap, July 20 Interest Rate Swap, July 2020 1 [Member] Interest Rate Swap, July 2020 1 Termination Date Trading Arrangement Termination Date Used vehicle wholesale Used vehicle wholesale [Member] Used vehicle wholesale [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] TOTAL REVENUE Revenues Revenues 4.50% Senior Notes due 2028 Four Point Five Zero Percent Senior Notes due 2028 [Member] Four Point Five Zero Percent Senior Notes due 2028 [Member] Entity Address, City or Town Entity Address, City or Town Used vehicles Used Vehicles [Member] Used Vehicles Schedule of Available-for-sale Securities [Table] Schedule of Gain (Loss) on Securities [Table] Due in 1-5 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Debt Instrument [Axis] Debt Instrument [Axis] ASSETS AND LIABILITIES HELD FOR SALE Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] NET INCOME Net income Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Investments, Debt and Equity Securities [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Business Acquisition [Axis] Business Acquisition [Axis] Floor plan notes payable—trade, net Floor plan notes payable—trade, net Floor Plan Notes Payable Trade Amounts borrowed to finance the purchase of specific new vehicle inventories with the corresponding manufacturers' captive finance subsidiaries ("trade lenders"). Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Due after 10 years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 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] Entity File Number Entity File Number Change in fair value of cash flow swaps, net of reclassification adjustment Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax REVENUE RECOGNITION Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Number of dealerships under investigation Loss Contingency, Number Of Dealerships Under Investigation Loss Contingency, Number Of Dealerships Under Investigation Total by maturity Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value Statement of Income: Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Share repurchases Treasury Stock, Value, Acquired, Cost Method Entity Address, Address Line Two Entity Address, Address Line Two Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Vehicle receivables Vehicle Receivables [Member] Vehicle Receivables [Member] Name Forgone Recovery, Individual Name Document Period End Date Document Period End Date Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Other adjustments, net Other Noncash Income (Expense) Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Insider Trading Arrangements [Line Items] Beginning balance Ending balance Contract with Customer, Asset, after Allowance for Credit Loss Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Other current assets Other Current Assets [Member] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Number of dealerships that violated FTC Act Loss Contingency, Dealerships That Violated FTC Act, Number Loss Contingency, Dealerships That Violated FTC Act, Number Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] TOTAL COST OF SALES Cost of sales Cost of Revenue Adjustment to Compensation: Adjustment to Compensation [Axis] Document Transition Report Document Transition Report Net assets held for sale Asset, Held-for-Sale, Not Part of Disposal Group Document Quarterly Report Document Quarterly Report Due in 1-5 years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Vehicle repair and maintenance services Vehicle Repair and Maintenance Services [Member] Vehicle repair and maintenance services [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Retained Earnings Retained Earnings [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] 12 months or longer, unrealized losses Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Restricted Share Units Restricted Stock Units (RSUs) [Member] Change in Contract with Customer, Asset [Roll Forward] Change in Contract with Customer, Asset [Roll Forward] Change in Contract with Customer, Asset [Roll Forward] Deferred Revenue Location [Domain] Deferred Revenue Location [Domain] Deferred Revenue Location [Domain] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Deferral of SG&A expense (related to capitalized contract costs offset by amortization) Deferral Of Selling, General And Administrative Expenses Deferral Of Selling, General And Administrative Expenses Executive Category: Executive Category [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Less than 12 months, unrealized losses Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Number of businesses acquired Number of Businesses Acquired Entity Filer Category Entity Filer Category Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Purchases of debt securities—available-for-sale Payments to Acquire Debt Securities, Available-for-Sale COST OF SALES: Cost of Revenue [Abstract] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Company Selected Measure Name Company Selected Measure Name