Short-term Borrowings and Long-term Debt (Details) (USD $)	12 Months Ended				12 Months Ended				12 Months Ended											12 Months Ended				12 Months Ended						0 Months Ended	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2014	Sep. 30, 2013	Nov. 30, 2006 Sally Investment Holdings LLC and Sally Holdings, LLC	Sep. 30, 2014 ABL facility	Oct. 29, 2013 ABL facility	Sep. 30, 2013 ABL facility	Jul. 31, 2013 ABL facility	Sep. 30, 2014 ABL facility Prime	Sep. 30, 2014 ABL facility Prime Minimum	Sep. 30, 2014 ABL facility Prime Maximum	Sep. 30, 2014 ABL facility LIBOR	Sep. 30, 2014 ABL facility LIBOR Minimum	Sep. 30, 2014 ABL facility LIBOR Maximum	Sep. 30, 2011 ABL facility Sally Holdings, LLC	Sep. 30, 2011 Canadian sub-facility	Sep. 30, 2014 Senior notes due Nov. 2019	Sep. 30, 2013 Senior notes due Nov. 2019	Sep. 30, 2012 Senior notes due Nov. 2019	Sep. 30, 2014 Senior notes due Nov. 2019 Maximum	Sep. 30, 2014 Senior notes due Jun. 2022	Sep. 30, 2013 Senior notes due Jun. 2022	Sep. 30, 2012 Senior notes due Jun. 2022	Sep. 30, 2014 Senior notes due Jun. 2022 Maximum	Sep. 30, 2014 Senior notes due 2022 issued for $150 million	Sep. 30, 2013 Senior notes due 2022 issued for $150 million	Sep. 30, 2012 Senior notes due 2022 issued for $150 million	Sep. 30, 2014 Senior notes due 2022 issued for $850 million	Sep. 30, 2012 Senior notes due 2022 issued for $850 million	Oct. 29, 2013 Senior notes due Nov 2023	Sep. 30, 2014 Senior notes due Nov 2023	Oct. 29, 2013 Senior notes due Nov 2023	Sep. 30, 2014 Other, due 2015	Sep. 30, 2013 Other, due 2015	Sep. 30, 2014 Other, due 2015 Minimum	Sep. 30, 2014 Other, due 2015 Maximum
Debt Instruments
Total		$ 1,807,542,000	$ 1,685,691,000			$ 88,500,000	$ 76,000,000										$ 750,000,000	$ 750,000,000			$ 857,447,000	$ 858,381,000									$ 200,000,000		$ 95,000	$ 1,310,000
Capital lease obligations		4,099,000	5,012,000
Less: current portion		974,000	78,018,000
Total long-term debt		1,810,667,000	1,612,685,000
Reference rate for variable interest rate									Prime			LIBOR
Percentage points added to the reference rate										0.50%	0.75%		1.50%	1.75%
Interest rate (as a percent)																	6.875%	6.875%	6.875%		5.75%	5.75%	5.75%					5.75%	5.75%		5.50%	5.50%			4.93%	5.79%
Unamortized premium																									7,400,000	8,400,000
Debt Instrument, Face Amount				1,850,000,000															750,000,000				850,000,000		150,000,000		150,000,000	850,000,000				200,000,000
Proceeds used to repay borrowings																														196,300,000
Revolving credit facility								500,000,000							400,000,000	25,000,000
Line of Credit Facility Term															5 years
Remaining credit facility available					476,000,000
Commitment fee for line of credit facility (as a percent)					0.25%
Aggregate principal amount of debt retired	$ 1,391,900,000
Maximum percentage of original principal amount that can be redeemed from specified proceeds																				35.00%				35.00%							35.00%