Significant Accounting Policies (Policies)	3 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The unaudited condensed consolidated interim financial statements of Sally Beauty Holdings, Inc. and its subsidiaries included herein have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and pursuant to the rules and regulations of the SEC. Accordingly, certain information and note disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC, although we believe that the disclosures included herein are adequate for the interim period presented. These condensed consolidated interim financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended September 30, 2024. In the opinion of management, these unaudited condensed consolidated interim financial statements reflect all adjustments that are of a normal recurring nature and which are necessary to present fairly our consolidated financial position as of December 31, 2024, and September 30, 2024, our consolidated results of operations, consolidated comprehensive income, consolidated statements of stockholders’ equity, and consolidated cash flows for the three months ended December 31, 2024 and 2023.
Principles of Consolidation	Principles of Consolidation The unaudited condensed consolidated interim financial statements include all accounts of Sally Beauty Holdings, Inc. and its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. All amounts are in U.S. Dollars.
Accounting Policies	Accounting Policies We adhere to the same accounting policies in the preparation of our condensed consolidated interim financial statements as we do in the preparation of our full year consolidated financial statements. As permitted under GAAP, interim accounting for certain expenses, including income taxes, is based on full-year assumptions. For interim financial reporting purposes, income taxes are recorded based upon our estimated annual effective income tax.
Use of Estimates	Use of Estimates In order to present our financial statements in conformity with GAAP, we are required to make certain estimates and assumptions that impact our interim financial statements and supplementary disclosures. These estimates may use forecasted financial information based on reasonable information available, however they are subject to change in the future. Significant estimates and assumptions are part of our accounting for sales allowances, deferred revenue, valuation of inventory, amortization and depreciation, intangibles and goodwill, and other reserves. We believe these estimates and assumptions are reasonable; however, they are based on management’s current knowledge of events and actions, and changes in facts and circumstances may result in revised estimates and impact actual results.

Principles of Consolidation

The unaudited condensed consolidated interim financial statements include all accounts of Sally Beauty Holdings, Inc. and its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. All amounts are in U.S. Dollars.

Use of Estimates

In order to present our financial statements in conformity with GAAP, we are required to make certain estimates and assumptions that impact our interim financial statements and supplementary disclosures. These estimates may use forecasted financial information based on reasonable information available, however they are subject to change in the future. Significant estimates and assumptions are part of our accounting for sales allowances, deferred revenue, valuation of inventory, amortization and depreciation, intangibles and goodwill, and other reserves. We believe these estimates and assumptions are reasonable; however, they are based on management’s current knowledge of events and actions, and changes in facts and circumstances may result in revised estimates and impact actual results.