Restructuring (Details) - USD ($)	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Distribution Center Consolidation and Store Optimization Plan
Restructuring reserve, beginning balance	$ 1,291,000
Restructuring charges	17,205,000	$ 27,577,000	$ 4,611,000
Cash Payments	(15,628,000)
Non-Cash Amounts	(2,782,000)
Restructuring reserve, ending balance	86,000	1,291,000
Project Surge
Distribution Center Consolidation and Store Optimization Plan
Restructuring reserve, beginning balance	0
Restructuring charges	0	0
Restructuring reserve, ending balance	0	0
Sally Beauty Supply
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	14,271,000
Beauty Systems Group
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	2,934,000
Closing Costs - Leases
Distribution Center Consolidation and Store Optimization Plan
Cash Payments	(7,760,000)
Non-Cash Amounts	(693,000)
Restructuring reserve, ending balance	37,000
Closing Costs - Leases | Sally Beauty Supply
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	7,220,000
Closing Costs - Leases | Beauty Systems Group
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	1,270,000
Closing Costs - Payroll Expenses
Distribution Center Consolidation and Store Optimization Plan
Cash Payments	(2,809,000)
Closing Costs - Payroll Expenses | Sally Beauty Supply
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	1,617,000
Closing Costs - Payroll Expenses | Beauty Systems Group
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	1,192,000
Impairment - Property and Equipment
Distribution Center Consolidation and Store Optimization Plan
Non-Cash Amounts	(1,495,000)
Impairment - Property and Equipment | Sally Beauty Supply
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	1,277,000
Impairment - Property and Equipment | Beauty Systems Group
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	218,000
Inventory Transfer Costs
Distribution Center Consolidation and Store Optimization Plan
Cash Payments	(1,039,000)
Inventory Transfer Costs | Sally Beauty Supply
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	963,000
Inventory Transfer Costs | Beauty Systems Group
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	76,000
Impairment - Operating Lease Assets
Distribution Center Consolidation and Store Optimization Plan
Non-Cash Amounts	(594,000)
Impairment - Operating Lease Assets | Sally Beauty Supply
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	350,000
Impairment - Operating Lease Assets | Beauty Systems Group
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	244,000
Other closure costs
Distribution Center Consolidation and Store Optimization Plan
Restructuring reserve, beginning balance	1,291,000
Cash Payments	(4,020,000)
Restructuring reserve, ending balance	49,000	$ 1,291,000
Other closure costs | Sally Beauty Supply
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	2,844,000
Other closure costs | Beauty Systems Group
Distribution Center Consolidation and Store Optimization Plan
Restructuring charges	$ (66,000)