DOCUMENT AND ENTITY INFORMATION	3 Months Ended
	Dec. 31, 2012
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Dec. 31, 2012
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Trading Symbol	DWOG
Entity Registrant Name	DEEP WELL OIL & GAS INC
Entity Central Index Key	0000869495
Current Fiscal Year End Date	--09-30
Entity Filer Category	Smaller Reporting Company
Entity Common Stock Shares Outstanding	179,597,113