Segments and Disaggregated Revenue (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2022 USD ($) segment	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Segments
Number of reportable segments | segment	2
Net sales:
Total net sales	$ 3,815,565	$ 3,874,997	$ 3,514,330
Segment operating earnings:
Segment operating earnings	337,640	418,443	258,760
Restructuring	27,577	4,611	14,025
Interest expense	93,543	93,509	98,793
Earnings before provision for income taxes	244,097	324,934	159,967
Depreciation and amortization:
Depreciation and amortization	99,929	102,201	106,779
Payments for property and equipment:
Payments for property and equipment	99,250	73,904	110,858
Total assets:
Assets	$ 2,576,867	$ 2,847,132	$ 2,895,147
Number of single customer accounted for ten percent or more of revenue	10.00%	10.00%	10.00%
Long-lived assets:
Long-lived assets	$ 297,876	$ 307,377	$ 315,029
United States
Net sales:
Total net sales	3,142,898	3,228,091	2,914,171
Long-lived assets:
Long-lived assets	263,929	267,839	264,936
Foreign
Net sales:
Total net sales	672,667	646,906	600,159
United Kingdom
Long-lived assets:
Long-lived assets	9,147	15,089	20,183
Other countries
Long-lived assets:
Long-lived assets	24,800	24,449	29,910
Operating segments
Segment operating earnings:
Segment operating earnings	544,291	622,736	431,794
Total assets:
Assets	2,447,187	2,414,690	2,477,546
Corporate
Segment operating earnings:
Unallocated expenses	179,074	199,682	159,009
Depreciation and amortization:
Depreciation and amortization	12,033	11,717	12,248
Payments for property and equipment:
Payments for property and equipment	11,150	5,859	10,390
Total assets:
Assets	129,680	432,442	417,601
Sally Beauty Supply
Net sales:
Total net sales	2,193,044	2,278,382	2,080,703
Depreciation and amortization:
Depreciation and amortization	57,798	61,887	65,207
Payments for property and equipment:
Payments for property and equipment	53,788	43,165	73,130
Sally Beauty Supply | Operating segments
Segment operating earnings:
Segment operating earnings	350,884	417,658	237,588
Total assets:
Assets	1,195,732	1,235,427	1,370,745
Beauty Systems Group
Net sales:
Total net sales	1,622,521	1,596,615	1,433,627
Depreciation and amortization:
Depreciation and amortization	30,098	28,597	29,324
Payments for property and equipment:
Payments for property and equipment	34,312	24,880	27,338
Beauty Systems Group | Operating segments
Segment operating earnings:
Segment operating earnings	193,407	205,078	194,206
Total assets:
Assets	$ 1,251,455	$ 1,179,263	$ 1,106,801