Document and Entity Information	9 Months Ended
	Sep. 30, 2012	Oct. 18, 2012
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2012
Entity Registrant Name	AURORA GOLD CORP
Entity Central Index Key	0001037049
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		249,144,706