Document and Entity Information Document (USD $)	9 Months Ended
	Sep. 30, 2012	Nov. 05, 2012	Jun. 30, 2011
Entity Registrant Name	BioScrip, Inc.
Entity Central Index Key	0001014739
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		56,893,296
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 184,882,882