Cover Page - shares	3 Months Ended
	Nov. 20, 2021	Dec. 10, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Nov. 20, 2021
Entity File Number	1-10714
Entity Registrant Name	AUTOZONE INC
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	62-1482048
Entity Address, Address Line One	123 South Front Street
Entity Address, City or Town	Memphis
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	38103
City Area Code	901
Local Phone Number	495-6500
Title of 12(b) Security	Common Stock
Trading Symbol	AZO
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		20,634,396
Current Fiscal Year End Date	--08-27
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000866787
Amendment Flag	false