Parent, Issuers, Guarantor and Non-Guarantor Condensed Consolidated Financial Statements (Details 3) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Condensed Consolidating Statement of Cash Flows
Net cash (used) provided by operating activities	$ 174,452	$ 158,900
Cash Flows from Investing Activities:
Capital expenditures, net of proceeds from sale of property and equipment	(37,337)	(30,343)
Acquisitions, net of cash acquired	(2,028)
Net cash used by investing activities	(39,365)	(30,343)
Cash Flows from Financing Activities:
Proceeds from issuances of long-term debt	983	232,719
Repayments of long-term debt	(1,396)	(109,549)
Debt issuance costs		(3,893)
Repurchases of common stock	(67,524)	(125,644)
Proceeds from exercises of stock options	51,765	21,389
Excess tax benefit from share-based compensation	22,567	11,682
Net cash provided by financing activities	6,395	26,704
Effect of foreign exchange rate changes on cash and cash equivalents	(2,030)	75
Net increase (decrease) in cash and cash equivalents	139,452	155,336
Cash and cash equivalents, beginning of period	106,575	47,115
Cash and cash equivalents, end of period	246,027	202,451
Reportable Legal Entities | Parent
Condensed Consolidating Statement of Cash Flows
Net cash (used) provided by operating activities	(6,807)	92,573
Cash Flows from Investing Activities:
Capital expenditures, net of proceeds from sale of property and equipment	(1)
Net cash used by investing activities	(1)
Cash Flows from Financing Activities:
Repurchases of common stock	(67,524)	(125,644)
Proceeds from exercises of stock options	51,765	21,389
Excess tax benefit from share-based compensation	22,567	11,682
Net cash provided by financing activities	6,808	(92,573)
Reportable Legal Entities | Sally Holdings LLC and Sally Capital Inc.
Condensed Consolidating Statement of Cash Flows
Net cash (used) provided by operating activities	121,503	5,397
Cash Flows from Financing Activities:
Proceeds from issuances of long-term debt		232,500
Repayments of long-term debt		(108,500)
Debt issuance costs		(3,893)
Net cash provided by financing activities		120,107
Net increase (decrease) in cash and cash equivalents	121,503	125,504
Cash and cash equivalents, beginning of period	27,000
Cash and cash equivalents, end of period	148,503	125,504
Reportable Legal Entities | Guarantor Subsidiaries
Condensed Consolidating Statement of Cash Flows
Net cash (used) provided by operating activities	54,036	41,125
Cash Flows from Investing Activities:
Capital expenditures, net of proceeds from sale of property and equipment	(25,027)	(18,723)
Acquisitions, net of cash acquired	(2,028)
Net cash used by investing activities	(27,055)	(18,723)
Cash Flows from Financing Activities:
Proceeds from issuances of long-term debt	14	219
Repayments of long-term debt	(89)	(78)
Net cash provided by financing activities	(75)	141
Net increase (decrease) in cash and cash equivalents	26,906	22,543
Cash and cash equivalents, beginning of period	40,042	16,337
Cash and cash equivalents, end of period	66,948	38,880
Reportable Legal Entities | Non-Guarantor Subsidiaries
Condensed Consolidating Statement of Cash Flows
Net cash (used) provided by operating activities	5,720	19,805
Cash Flows from Investing Activities:
Capital expenditures, net of proceeds from sale of property and equipment	(12,309)	(11,620)
Net cash used by investing activities	(12,309)	(11,620)
Cash Flows from Financing Activities:
Proceeds from issuances of long-term debt	969
Repayments of long-term debt	(1,307)	(971)
Net cash provided by financing activities	(338)	(971)
Effect of foreign exchange rate changes on cash and cash equivalents	(2,030)	75
Net increase (decrease) in cash and cash equivalents	(8,957)	7,289
Cash and cash equivalents, beginning of period	39,533	30,778
Cash and cash equivalents, end of period	$ 30,576	$ 38,067