Document and Entity Information (USD $)	12 Months Ended
	Sep. 30, 2013	Nov. 25, 2013	Mar. 29, 2013
Document and Entity Information
Entity Registrant Name	NBTY INC
Entity Central Index Key	0000070793
Document Type	10-K
Document Period End Date	Sep. 30, 2013
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	Yes
Entity Current Reporting Status	No
Entity Filer Category	Non-accelerated Filer
Entity Public Float			$ 0
Entity Common Stock, Shares Outstanding		1,000
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY