Document and Entity Information (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Nov. 26, 2012	Mar. 30, 2012
Document and Entity Information
Entity Registrant Name	NBTY INC
Entity Central Index Key	0000070793
Document Type	10-K
Document Period End Date	Sep. 30, 2012
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	2012
Document Fiscal Period Focus	FY