Document and Entity Information - shares	3 Months Ended
	Dec. 31, 2024	Feb. 07, 2025
Cover [Abstract]
Entity Registrant Name	SALLY BEAUTY HOLDINGS, INC.
Entity Central Index Key	0001368458
Document Type	10-Q
Document Period End Date	Dec. 31, 2024
Trading Symbol	SBH
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity File Number	1-33145
Entity Tax Identification Number	36-2257936
Entity Address, Address Line One	3001 Colorado Boulevard
Entity Address, City or Town	Denton
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	76210
City Area Code	800
Local Phone Number	777-5706
Security Exchange Name	NYSE
Title of 12(b) Security	Common Stock, $0.01 par value
Entity Incorporation, State or Country Code	DE
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding		101,954,447
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q1