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			$ 1,163,282	$ 1,260,802
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	$ 1,118,020	$ 1,163,282	1,118,020	1,163,282
Impairment of indefinite lived tradenames	55,000
Consumer Products Group
Changes in goodwill
Balance at the beginning of the period			638,630	645,220
Write off due to sale of powder facility			(4,892)
Foreign currency translation			(14,931)	(6,590)
Balance at the end of the period	618,807	638,630	618,807	638,630
Holland & Barrett International
Changes in goodwill
Balance at the beginning of the period			321,257	324,853
Purchase price adjustments				517
Foreign currency translation			(24,790)	(4,113)
Balance at the end of the period	296,467	321,257	296,467	321,257
Puritan's Pride
Changes in goodwill
Balance at the beginning of the period			203,395	264,985
Impairment of goodwill		(61,590)		(61,590)
Write off due to sale of powder facility			(649)
Balance at the end of the period	202,746	203,395	$ 202,746	203,395
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