Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Weighted-average shares: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Trading Arrangement: Trading Arrangement [Axis] Short-Term Debt, Type Short-Term Debt, Type [Axis] Title of 12(b) Security Title of 12(b) Security Document Fiscal Year Focus Document Fiscal Year Focus Adjustment to Compensation, Amount Adjustment to Compensation Amount Segment Reporting [Abstract] Segment Reporting [Abstract] Common stock, $0.01 par value. Authorized 500,000 shares; 94,092 and 97,875 shares issued and shares outstanding at June 30, 2026 and September 30, 2025, respectively Common Stock, Value, Issued Employee withholding taxes paid related to net share settlement of equity awards Payment, Tax Withholding, Share-Based Payment Arrangement Compensation and benefits Employee-related Liabilities, Current Salon business consultants Salon Business Consultants [Member] Salon business consultants. ABL Facility Line of Credit [Member] Restatement Determination Date Restatement Determination Date Insurance reserves Accrued Insurance, Current Contract With Customer, Liability [Roll Forward] Contract With Customer, Liability [Roll Forward] Contract With Customer, Liability Derivative Instrument Derivative Instrument [Axis] Amendment Flag Amendment Flag Goodwill [Line Items] Goodwill [Line Items] Current liabilities: Liabilities, Current [Abstract] Schedule of Notional Amounts Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Franchisor Disclosure Franchisor Disclosure [Domain] Deferred income taxes Increase (Decrease) in Deferred Income Taxes Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Property, Plant, and Equipment [Abstract] Property, Plant, and Equipment [Abstract] Entity Address, State or Province Entity Address, State or Province Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent PEO Total Compensation Amount PEO Total Compensation Amount Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Financial Assets: Assets, Fair Value Disclosure [Abstract] Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Member] Intangible assets, excluding goodwill, net of accumulated amortization of $9,687 at June 30, 2026 and $14,686 at September 30, 2025 Intangible Asset, Excluding Goodwill, after Accumulated Amortization Notional amount Notional Amount Derivative, Notional Amount Share Repurchase Program [Domain] Share Repurchase Program [Domain] Basic (in shares) Weighted-average basic shares (in shares) Weighted Average Number of Shares Outstanding, Basic Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Number of reportable segments Number of Reportable Segments Total current liabilities Liabilities, Current Short-Term Debt, Type Short-Term Debt, Type [Domain] Entity Address, City or Town Entity Address, City or Town Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Level 2 Fair Value, Inputs, Level 2 [Member] Intangible assets, excluding goodwill, accumulated amortization Intangible Asset, Finite-Lived, Accumulated Amortization Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Sales Revenue, Net Revenue Benchmark [Member] SBS Sally Sally Beauty Supply [Member] Represents the domestic and international chain of cash and carry retail stores, which offers professional beauty supplies to both salon professionals and retail customers. E-commerce E Commerce [Member] E-commerce. Concentration Risk Type Concentration Risk Type [Axis] Debt Instrument [Table] Schedule of Long-Term Debt Instruments [Table] Depreciation and amortization: Depreciation, Depletion and Amortization [Abstract] Class Of Treasury Stock [Table] Class of Treasury Stock [Table] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Capital expenditures incurred but not paid Capital Expenditures Incurred but Not yet Paid Schedule of Segment Operating Performance Segment Reporting [Table Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Amortization of deferred financing costs Amortization of Debt Issuance Costs Impairment of long-lived assets Impairment of Long-Lived Assets to be Disposed of Other comprehensive income (loss), net of tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Schedule of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Carrying Value Long-Term Debt Property and Equipment, Net Property, Plant, and Equipment [Text Block] Income taxes payable Increase (Decrease) in Income Taxes Payable Document Period End Date Document Period End Date Changes in: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash used by 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] Gain on sale of property and other Sale of asset, gain Gain related to sale of corporate headquarters Gain (Loss) on Sale of Properties Stockholders' Equity Equity [Text Block] Security Exchange Name Security Exchange Name Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Domain] Total liabilities Liabilities, Fair Value Disclosure Accumulated other comprehensive loss, net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items Consolidation Items [Domain] Current operating lease liabilities Operating Lease, Liability, Current Interest payable Interest Payable, Current Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Weighted-Average Shares Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Earnings per share: Earnings Per Share [Abstract] 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 Geographical [Domain] Geographical [Domain] Payments for property and 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] Income taxes payable Accrued Income Taxes, Current Company Selected Measure Name Company Selected Measure Name Reclassification to net earnings, net of tax Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Fixed interest rate Derivative, Fixed Interest Rate Accrued freight Accrued Freight Accrued freight. Cash Flows from Operating Activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Diluted (in shares) Weighted-average diluted shares (in shares) Weighted Average Number of Shares Outstanding, Diluted Disaggregation Of Revenue [Line Items] Disaggregation of Revenue [Line Items] Sales Channel, Directly to Consumer Sales Channel, Directly to Consumer [Member] 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 Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Operating leases, net Increase Decrease In Operating Lease Assets And Liabilities Increase (decrease) in operating lease assets and liabilities . Other assets Increase (Decrease) in Other Noncurrent Assets Gross profit Gross Profit Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Award Timing Predetermined Award Timing Predetermined [Flag] Intangible Asset, Goodwill and Other [Abstract] Intangible Asset, Goodwill and Other [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Restricted stock awards and stock options (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements All Executive Categories All Executive Categories [Member] Share Repurchase Program Stock Repurchased and Retired During Period, Value 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 (in dollars per share) Preferred Stock, Par or Stated Value Per Share Fair Value Long-Term Debt, Fair Value Operating lease assets Operating Lease, Right-of-Use Asset Concentration Risk Type Concentration Risk Type [Domain] Sale of asset, closing cost Assets Held For Sale Closing Cost Assets held for sale closing cost. Schedule of Reconciliation of Basic and Diluted Weighted-Average Shares 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] Current maturities of long-term debt Long-Term Debt and Lease Obligation, Current Segment Reporting Segment Reporting [Text Block] Outstanding borrowings Outstanding borrowings Long-Term Line of Credit Expiration Date Trading Arrangement Expiration Date Schedule of Disaggregation of Net Sales by Segment Disaggregation of Revenue [Table Text Block] Summary of Intangible Assets Amortization Expense Intangible Asset, Finite-Lived, Amortization Expense [Table Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] 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] BSG Beauty Systems Group [Member] Represents the full service beauty supply distributor, which offers professional brands of beauty products directly to salons through its own sales force and professional-only stores. Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Derivative [Table] Derivative [Table] Common stock, authorized (in shares) Common Stock, Shares Authorized Earnings Per Share Reconciliation: Earnings Per Share Reconciliation [Abstract] Accumulated Other Comprehensive Income Loss [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accounts receivable, other Nontrade Receivables Exercise Price Award Exercise Price Cash Flows from Investing Activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Segment Reporting [Line Items] Segment Reporting [Line Items] Amount of shares authorized to be repurchased Share Repurchase Program, Authorized, Amount Document Quarterly Report Document Quarterly Report 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] Accrued Liabilities, Current [Abstract] Accrued Liabilities, Current [Abstract] Interest Rate Swap Interest Rate Swap Interest Rate Swap [Member] Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Effect of foreign exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Proceeds from divestiture of subsidiary Proceeds from Divestiture of Interest in Consolidated Subsidiaries Short-Term and Long-Term Debt Debt Disclosure [Text Block] Repayment of debt Repayments of Long-Term Debt Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Accounts receivable, other Increase (Decrease) in Other Receivables Equity Component Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Foreign Currency Forwards Foreign Exchange Contracts Foreign Exchange Contract [Member] 2017 Share Repurchase program Share Repurchase Program 2017 [Member] Represents the information pertaining to 2017 share repurchase program. Adoption Date Trading Arrangement Adoption Date Euro Euro Member Countries, Euro Contract with Customer, Liability [Abstract] Contract with Customer, Liability [Abstract] Total stockholders’ equity Beginning balance Ending balance Equity, Attributable to Parent 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 Foreign currency forwards designated as cash flow hedges net (loss) gain Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Insider Trading Policies and Procedures [Line Items] Accrued Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Hair care Hair Care [Member] Hair care. Selling, general and administrative expenses SG&A expenses Selling, General and Administrative Expense Repayments of long-term debt and ABL Facility Repayments of Debt Interest expense Interest expense Interest Income (Expense), Nonoperating Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Anti-dilutive stock options excluded from diluted shares (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Entity Central Index Key Entity Central Index Key Property and equipment, accumulated depreciation Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization All Adjustments to Compensation All Adjustments to Compensation [Member] Unallocated expenses Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] 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 Company-operated stores Entity Operated Units [Member] Income Statement [Abstract] Income Statement [Abstract] Stockholders’ equity: Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Axis] Designated cash flow hedges Designated as Hedging Instrument [Member] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Deferred revenue Deferred Revenue, Current City Area Code City Area Code Accumulated Other Comprehensive Loss AOCL AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Statement [Line Items] Statement [Line Items] Total assets Assets Entity Entity [Domain] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Accounting Standards Update and Change in Accounting Principle [Abstract] Accounting Standards Update and Change in Accounting Principle [Abstract] Operating segments Operating Segments [Member] Other comprehensive income (loss) before reclassification, net of tax OCI, before Reclassifications, Net of Tax, Attributable to Parent PEO PEO [Member] Share Repurchase Program (in shares) Stock Repurchased and Retired During Period, Shares Other liabilities Other Liabilities, Noncurrent Goodwill Goodwill Senior notes due 2032 Senior Notes Due Two Thousand And Thirtytwo [Member] Senior notes due two thousand and thirtytwo. Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Revenue recognized from beginning liability Contract with Customer, Liability, Revenue Recognized Accumulated Earnings Retained Earnings [Member] Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Term loan B due 2030 Term Loan B Due Two Thousand And Thirty [Member] Term loan B due two thousand and thirty. Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock, shares outstanding (in shares) Balance (in shares) Balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Foreign currency translation adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Debt issuance costs Payments of Debt Issuance Costs Diluted (in dollars per share) Earnings Per Share, Diluted Accumulated Other Comprehensive Income Loss [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Hair color Hair Color [Member] Hair color. Net cash used by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Employee withholding taxes paid related to net share settlement Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Intangible assets amortization expense Intangible Asset, Finite-Lived, Amortization Expense Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Adjustments to reconcile net earnings to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] AOCL to COGS over the next 12 months Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months Loyalty points and gift cards issued but not redeemed, net of estimated breakage Contract With Customer Liability Loyalty Points And Gift Cards Issued But Not Redeemed Net Of Estimated Breakage Contract with customer liability, loyalty points and gift cards issued but not redeemed, net of estimated breakage. Cash Flows from Financing Activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Net sales Revenue from Contract with Customer, Excluding Assessed Tax Property and equipment, net of accumulated depreciation of $984,490 at June 30, 2026 and $937,596 at September 30, 2025 Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Available borrowings Line of Credit Facility, Remaining Borrowing Capacity Skin and cosmetics Skin And Cosmetics [Member] Skin and cosmetics. British Pound United Kingdom, Pounds Proceeds from sale of property and other Sale of asset, amount Proceeds from Sale, Property, Held-for-Sale Financial Assets: Derivative Asset Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Goodwill and Intangible Assets Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount Revenue Recognition Revenue from Contract with Customer [Text Block] Rental obligations Accrued Rent, Current Inventory Increase (Decrease) in Inventories Schedule Of Segment Reporting Information By Segment [Table] Segment Reporting [Table] Contract with Customer, Sales Channel Contract with Customer, Sales Channel [Axis] Number of derivative instruments held Derivative, Number of Instruments Held Other current assets Other Assets, Current All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating earnings Operating Income (Loss) Current Fiscal Year End Date Current Fiscal Year End Date Proceeds from ABL Facility Proceeds from Issuance of Debt Gain on divestiture of subsidiary Gain (Loss) on Disposition of Business Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Derivative Instruments Derivative [Line Items] Foreign exchange contracts, net of tax Other Comprehensive Income Loss Foreign Exchange Contracts Net Of Tax Other comprehensive income (loss), foreign exchange contracts, net of tax. Number of shares repurchased (in shares) Stock Repurchased During Period, Shares 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] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Stock issued for equity awards Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Equity Components Equity Components [Axis] Trade accounts receivable Increase (Decrease) in Accounts Receivable Product and Service Product and Service [Domain] Currency Currency [Axis] Income taxes paid Income Tax Paid, after Refund Received Franchisor Disclosure Franchisor Disclosure [Axis] Disaggregation Of Revenue [Table] Disaggregation of Revenue [Table] Entity Interactive Data Current Entity Interactive Data Current Deferred income tax liabilities, net 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 Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Termination Date Trading Arrangement Termination Date Employee withholding taxes paid related to net share settlement (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Property, Plant, and Equipment [Line Items] Property, Plant, and Equipment [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Interest income Interest Income (Expense), Operating MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other assets Other Assets, Noncurrent Document Type Document Type Acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired 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] Loss on early extinguishment of debt Loss on debt extinguishment Gain (Loss) on Extinguishment of Debt Accrued liabilities Total accrued liabilities Accrued Liabilities, Current Fair Value as of Grant Date Award Grant Date Fair Value Significant Accounting Policies Significant Accounting Policies [Text Block] Other beauty items Other Beauty Items [Member] Other beauty items. Goodwill [Table] Goodwill [Table] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Impairment losses in connection with the intangible assets Intangible Asset, Excluding Goodwill, Impairment Loss Remaining authorization Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Consolidation Items Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Earnings before provision for income taxes 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] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Axis] Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Inventory Inventory, Net All Award Types Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Fair Value Measurements Fair Value Disclosures [Text Block] Sally Holdings, LLC Sally Holdings [Member] Represents Sally Holdings, LLC. Supplemental Cash Flow Information: Supplemental Cash Flow Information [Abstract] PEO Name PEO Name Geographical [Axis] Geographical [Axis] Denton, Texas Denton, Texas [Member] Denton, Texas. Cash flow hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Legal Entity Legal Entity [Axis] Total cost of share repurchased Stock Repurchased During Period Value Excluding Shares Paid For Tax Withholding For Share Based Compensation And Excise Taxes Stock repurchased during period value excluding shares paid for tax withholding for share based compensation and excise taxes. Product Concentration Risk Product Concentration Risk [Member] Asset-based Senior Secured Loan Facility Asset-based Senior Secured Loan Facility [Member] Asset-based senior secured loan facility. Operating accruals and other Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] 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] Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Long-Term Debt, Type Long-Term Debt, Type [Domain] Basic (in dollars per share) Earnings Per Share, Basic Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Beginning Balance Ending Balance Contract with Customer, Liability, Current Payments for common stock repurchased Payments for Repurchase of Common Stock Total current assets Assets, Current Insider Trading Arrangements [Line Items] Styling tools and supplies Styling Tools And Supplies [Member] Styling tools and supplies. Nail Nail [Member] Nail. Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Trade accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Accumulated earnings Retained Earnings (Accumulated Deficit) Product and Service Product and Service [Axis] All Currencies All Currencies [Domain] 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] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover Cover [Abstract] Accounting Policies Accounting Policies [Policy Text Block] Accounting policies. Percentage of Net Sales Concentration Risk, Percentage Concentration Risk Benchmark Concentration Risk Benchmark [Axis] Derivative Contract Derivative Contract [Domain] Goodwill, decrease from effects of foreign currency exchange rates Goodwill, Foreign Currency Translation, Gain (Loss) Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities and stockholders’ equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Segments Segments [Axis] Other liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Tabular List, Table Tabular List [Table Text Block] Segment reporting, CODM, profit (loss) measure, how used, description Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description 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] Mexican Peso Mexico, Pesos Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Preferred stock, $0.01 par value. Authorized 50,000 shares; none issued Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Hedging Designation Hedging Designation [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Hedging Designation Hedging Designation [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total assets Assets, Fair Value Disclosure Long-term debt Long-Term Debt and Lease Obligation Canadian Dollar Canada, Dollars Name Measure Name Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Other current assets Increase (Decrease) in Other Current Assets Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category TLB 2030 T L B Twenty Thirty [Member] TLB 2030. Impairment losses in connection with the goodwill Goodwill, Impairment Loss Sales Channel, Through Intermediary Sales Channel, Through Intermediary [Member] Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Non-designated cash flow hedges Not Designated as Hedging Instrument [Member] Depreciation and amortization Total Depreciation, Depletion and Amortization Stock issued for equity awards (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Contract with Customer, Sales Channel Contract with Customer, Sales Channel [Domain] Current assets: Assets, Current [Abstract] Financial Liabilities: Derivative Liability Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Provision for income taxes Income Tax Expense (Benefit) Dilutive potential common stock: Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Cost of goods sold COGS Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Principles of Consolidation 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] Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Net earnings Net earnings Net Income (Loss) Attributable to Parent Long-Term Debt, Type Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Proceeds from stock options exercised Proceeds from Stock Options Exercised Schedule of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Interest rate swap, net of tax Other Comprehensive Income Loss Interest Rate Swap Net Of Tax Other comprehensive income loss interest rate swap net of tax. Term of derivative instrument Derivative, Contract Term Schedule of Changes to Contract Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Franchise stores Franchised Units [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Chief Executive Officer [Member]