Document and Entity Information	9 Months Ended
	Mar. 31, 2015	May 01, 2015
Document and Entity Information
Entity Registrant Name	ACCURAY INC
Entity Central Index Key	0001138723
Document Type	10-Q
Document Period End Date	Mar. 31, 2015
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		78,986,768
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3