Document and Entity Information	9 Months Ended
Sep. 30, 2011	Nov. 10, 2011
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q3
Trading Symbol	BPTH
Entity Registrant Name	BIO-PATH HOLDINGS INC
Entity Central Index Key	0001133818
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		58,066,296

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