| Cover | Sep. 21, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 21, 2021 |
| Entity File Number | 1-10714 |
| Entity Registrant Name | AUTOZONE, INC. |
| Entity Central Index Key | 0000866787 |
| Entity Tax Identification Number | 62-1482048 |
| Entity Incorporation, State or Country Code | NV |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | AZO |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
