Document and Entity Information Document - shares	3 Months Ended
	Nov. 26, 2021	Dec. 28, 2021
Cover [Abstract]
Entity Registrant Name	SMART GLOBAL HOLDINGS, INC.
Entity Central Index Key	0001616533
Current Fiscal Year End Date	--08-26
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Shell Company	false
Entity Emerging Growth Company	false
Document Type	10-Q
Trading Symbol	SGH
Document Period End Date	Nov. 26, 2021
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding		24,692,120
Title of 12(b) Security	Ordinary shares, $0.03 par value per share
Security Exchange Name	NASDAQ
Entity File Number	001-38102
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	98-1013909
Entity Address, Address Line One	c/o Maples Corporate Services Limited
Entity Address, Address Line Two	P.O. Box 309
Entity Address, City or Town	Grand Cayman
Entity Address, Country	KY
Entity Address, Postal Zip Code	KY1-1104
City Area Code	510
Local Phone Number	623-1231
Document Quarterly Report	true
Document Transition Report	false