Document and Entity Information	9 Months Ended
	Sep. 30, 2012	Nov. 14, 2012
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2012
Document Fiscal Year Focus	2012
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		62,219,050