Parent, Issuers, Guarantor and Non-Guarantor Condensed Consolidated Financial Statements (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2013
Parent, Issuers, Guarantor and Non-Guarantor Condensed Consolidated Financial Statements
Percentage of guarantor subsidiaries owned by parent	100.00%
Assets
Cash and cash equivalents	$ 246,027	$ 106,575	$ 202,451	$ 47,115
Trade and other accounts receivable, less allowance for doubtful accounts	81,325	98,500
Inventory	838,117	828,429
Other current assets	44,163	38,995
Deferred income tax assets, net	31,771	31,650
Property and equipment, net	233,761	238,111
Goodwill and other intangible assets, net	626,018	651,085
Other assets	33,671	36,628
Total assets	2,134,853	2,029,973
Liabilities and Stockholders' (Deficit) Equity
Accounts payable	280,750	259,463
Accrued liabilities	189,486	198,769
Income taxes payable	3,495	4,331
Long-term debt	1,810,156	1,811,641
Other liabilities	27,971	27,848
Deferred income tax liabilities, net	83,999	74,974
Total liabilities	2,395,857	2,377,026
Total stockholders' (deficit) equity	(261,004)	(347,053)
Total liabilities and stockholders' deficit	2,134,853	2,029,973
Reportable Legal Entities | Parent
Assets
Trade and other accounts receivable, less allowance for doubtful accounts	173	2
Other current assets	11,084	7,935
Deferred income tax assets, net	(213)	(213)
Property and equipment, net	2	1
Investment in subsidiaries	543,491	471,320
Total assets	554,537	479,045
Liabilities and Stockholders' (Deficit) Equity
Accounts payable	6
Due to affiliates	816,588	826,819
Accrued liabilities	433	691
Deferred income tax liabilities, net	(1,486)	(1,412)
Total liabilities	815,541	826,098
Total stockholders' (deficit) equity	(261,004)	(347,053)
Total liabilities and stockholders' deficit	554,537	479,045
Reportable Legal Entities | Sally Holdings LLC and Sally Capital Inc.
Assets
Cash and cash equivalents	148,503	27,000	125,504
Other current assets	2,114	452
Deferred income tax assets, net	1	1
Investment in subsidiaries	2,943,764	2,835,722
Other assets	26,570	28,931
Total assets	3,120,952	2,892,106
Liabilities and Stockholders' (Deficit) Equity
Due to affiliates	728,827	571,847
Accrued liabilities	40,730	40,751
Income taxes payable	1,217	1,051
Long-term debt	1,806,978	1,807,447
Deferred income tax liabilities, net	(291)	(310)
Total liabilities	2,577,461	2,420,786
Total stockholders' (deficit) equity	543,491	471,320
Total liabilities and stockholders' deficit	3,120,952	2,892,106
Reportable Legal Entities | Guarantor Subsidiaries
Assets
Cash and cash equivalents	66,948	40,042	38,880	16,337
Trade and other accounts receivable, less allowance for doubtful accounts	54,718	63,009
Due from affiliates	1,615,125	1,464,752
Inventory	642,721	631,786
Other current assets	12,553	15,016
Deferred income tax assets, net	30,527	30,527
Property and equipment, net	161,029	158,402
Investment in subsidiaries	352,435	392,270
Goodwill and other intangible assets, net	471,788	476,113
Other assets	1,569	1,625
Total assets	3,409,413	3,273,542
Liabilities and Stockholders' (Deficit) Equity
Accounts payable	225,838	202,743
Due to affiliates	27	27
Accrued liabilities	125,292	129,791
Income taxes payable		1
Long-term debt	192	267
Other liabilities	25,203	25,020
Deferred income tax liabilities, net	89,097	79,971
Total liabilities	465,649	437,820
Total stockholders' (deficit) equity	2,943,764	2,835,722
Total liabilities and stockholders' deficit	3,409,413	3,273,542
Reportable Legal Entities | Non-Guarantor Subsidiaries
Assets
Cash and cash equivalents	30,576	39,533	38,067	30,778
Trade and other accounts receivable, less allowance for doubtful accounts	26,434	35,489
Due from affiliates	27	27
Inventory	195,396	196,643
Other current assets	18,412	15,592
Deferred income tax assets, net	1,456	1,335
Property and equipment, net	72,730	79,708
Goodwill and other intangible assets, net	154,230	174,972
Other assets	5,532	6,072
Total assets	504,793	549,371
Liabilities and Stockholders' (Deficit) Equity
Accounts payable	54,906	56,720
Due to affiliates	69,710	66,086
Accrued liabilities	23,031	27,536
Income taxes payable	2,278	3,279
Long-term debt	2,986	3,927
Other liabilities	2,768	2,828
Deferred income tax liabilities, net	(3,321)	(3,275)
Total liabilities	152,358	157,101
Total stockholders' (deficit) equity	352,435	392,270
Total liabilities and stockholders' deficit	504,793	549,371
Consolidating Eliminations
Assets
Due from affiliates	(1,615,152)	(1,464,779)
Investment in subsidiaries	(3,839,690)	(3,699,312)
Total assets	(5,454,842)	(5,164,091)
Liabilities and Stockholders' (Deficit) Equity
Due to affiliates	(1,615,152)	(1,464,779)
Total liabilities	(1,615,152)	(1,464,779)
Total stockholders' (deficit) equity	(3,839,690)	(3,699,312)
Total liabilities and stockholders' deficit	$ (5,454,842)	$ (5,164,091)