Document and Entity Information	3 Months Ended
	Dec. 31, 2014	Feb. 02, 2015
Document and Entity Information
Entity Registrant Name	NBTY INC
Entity Central Index Key	0000070793
Document Type	10-Q
Document Period End Date	Dec. 31, 2014
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Entity Voluntary Filers	Yes
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		1,000
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1