Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net sales:
Total net sales	$ 961,467	$ 1,022,387	$ 2,853,105	$ 2,884,737
Segment operating earnings:
Segment operating earnings	99,203	127,417	298,444	307,250
Restructuring	44	508	1,143	1,371
Interest expense	35,977	23,452	76,113	73,313
Earnings before provision for income taxes	63,226	103,965	222,331	233,937
Operating segments
Segment operating earnings:
Segment operating earnings	144,859	172,049	430,976	463,655
Corporate
Segment operating earnings:
Unallocated expenses	45,612	44,124	131,389	155,034
Sally Beauty Supply
Net sales:
Total net sales	551,725	602,681	1,639,040	1,693,015
Sally Beauty Supply | Operating segments
Segment operating earnings:
Segment operating earnings	88,792	116,784	270,355	311,975
Beauty Systems Group
Net sales:
Total net sales	409,742	419,706	1,214,065	1,191,722
Beauty Systems Group | Operating segments
Segment operating earnings:
Segment operating earnings	$ 56,067	$ 55,265	$ 160,621	$ 151,680