Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Changes in goodwill
Balance at the beginning of the period			$ 1,149,352	$ 1,246,872
Purchase price adjustments				517
Impairment of goodwill				(87,334)
Write off due to sale of powder facility			(5,541)
Foreign currency translation			(39,721)	(10,703)
Balance at the end of the period	$ 1,104,090	$ 1,149,352	1,104,090	1,149,352
Impairment of indefinite lived tradenames	55,000
Consumer Products Group
Changes in goodwill
Balance at the beginning of the period			631,501	638,091
Write off due to sale of powder facility			(4,892)
Foreign currency translation			(14,931)	(6,590)
Balance at the end of the period	611,678	631,501	611,678	631,501
Holland & Barrett International
Changes in goodwill
Balance at the beginning of the period			318,171	321,767
Purchase price adjustments				517
Foreign currency translation			(24,790)	(4,113)
Balance at the end of the period	293,381	318,171	293,381	318,171
Puritan's Pride
Changes in goodwill
Balance at the beginning of the period			199,680	261,270
Impairment of goodwill		(61,590)		(61,590)
Write off due to sale of powder facility			(649)
Balance at the end of the period	199,031	199,680	199,031	199,680
Impairment of indefinite lived tradenames		110,000
Vitamin World
Changes in goodwill
Balance at the beginning of the period				25,744
Impairment of goodwill		(25,744)		$ (25,744)
Impairment of indefinite lived tradenames	55,000	$ 10,000
Adjustment
Changes in goodwill
Balance at the end of the period	(13,930)		(13,930)
Adjustment | Consumer Products Group
Changes in goodwill
Balance at the end of the period	(7,129)		(7,129)
Adjustment | Holland & Barrett International
Changes in goodwill
Balance at the end of the period	(3,086)		(3,086)
Adjustment | Puritan's Pride
Changes in goodwill
Balance at the end of the period	$ (3,715)		$ (3,715)