Document and Entity Information - shares	6 Months Ended
	Dec. 31, 2023	Feb. 01, 2024
Cover [Abstract]
Entity Registrant Name	ACCURAY INCORPORATED
Entity Central Index Key	0001138723
Document Type	10-Q
Document Period End Date	Dec. 31, 2023
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Entity Current Reporting Status	Yes
Trading Symbol	ARAY
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		99,168,765
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Entity File Number	001-33301
Entity Tax Identification Number	20-8370041
Entity Address, Address Line One	1240 Deming Way
Entity Address, City or Town	Madison
Entity Address, State or Province	WI
Entity Address, Postal Zip Code	53717
City Area Code	608
Local Phone Number	824-2800
Entity Incorporation, State or Country Code	DE
Entity Interactive Data Current	Yes
Document Quarterly Report	true
Document Transition Report	false
Title of 12(b) Security	Common Stock, $0.001 par value per share
Security Exchange Name	NASDAQ