General	9 Months Ended
May 10, 2014
Accounting Policies [Abstract]
General	Note A – General The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and with instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission’s (the “SEC”) rules and regulations. Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments, including normal recurring accruals, considered necessary for a fair presentation have been included. For further information, refer to the consolidated financial statements and related notes included in the AutoZone, Inc. (“AutoZone” or the “Company”) Annual Report on Form 10-K for the year ended August 31, 2013. Operating results for the twelve and thirty-six weeks ended May 10, 2014, are not necessarily indicative of the results that may be expected for the fiscal year ending August 30, 2014. Each of the first three quarters of AutoZone’s fiscal year consists of 12 weeks, and the fourth quarter consists of 16 or 17 weeks. The fourth quarter for fiscal 2014 has 16 weeks and for fiscal 2013 had 17 weeks. Additionally, the Company’s business is somewhat seasonal in nature, with the highest sales generally occurring during the months of February through September and the lowest sales generally occurring in the months of December and January. Recently Adopted Accounting Pronouncements: In July 2012, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2012-02, Testing Indefinite-Lived Intangible Assets for Impairment. The purpose of ASU 2012-02 is to simplify how an entity tests for impairment of indefinite-lived intangible assets. Entities will assess qualitative factors to determine whether it is more likely than not that a long-lived intangible asset’s fair value is less than its carrying value. In instances where the fair value is determined to be less than the carrying value, entities will perform the two-step quantitative goodwill impairment test. The Company adopted this standard effective September 1, 2013, and it had no material impact on the consolidated financial statements. In February 2013, the FASB issued ASU 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. Under ASU 2013-02, an entity is required to provide information about the amounts reclassified out of accumulated other comprehensive income (“AOCI”) by component. In addition, an entity is required to present, either on the face of the financial statements or in the notes, significant amounts reclassified out of AOCI by the respective line items of net income, but only if the amount reclassified is required to be reclassified in its entirety in the same reporting period. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide additional details about those amounts. ASU 2013-02 does not change the current requirements for reporting net income or other comprehensive income in the financial statements. The Company adopted this standard effective September 1, 2013, and it had no material impact on the consolidated financial statements. Recently Issued Accounting Pronouncements: In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. Under ASU 2014-09, an entity will recognize revenue when it transfers promised goods or services to customers in an amount that reflects what it expects in exchange for the goods or services. It also requires more detailed disclosures to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The Company does not expect the provision of ASU 2014-09 to have a material impact on its consolidated financial statements. This update will be effective for the Company at the beginning of its fiscal 2018 year.

Note A – General

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and with instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission’s (the “SEC”) rules and regulations. Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments, including normal recurring accruals, considered necessary for a fair presentation have been included. For further information, refer to the consolidated financial statements and related notes included in the AutoZone, Inc. (“AutoZone” or the “Company”) Annual Report on Form 10-K for the year ended August 31, 2013.

Operating results for the twelve and thirty-six weeks ended May 10, 2014, are not necessarily indicative of the results that may be expected for the fiscal year ending August 30, 2014. Each of the first three quarters of AutoZone’s fiscal year consists of 12 weeks, and the fourth quarter consists of 16 or 17 weeks. The fourth quarter for fiscal 2014 has 16 weeks and for fiscal 2013 had 17 weeks. Additionally, the Company’s business is somewhat seasonal in nature, with the highest sales generally occurring during the months of February through September and the lowest sales generally occurring in the months of December and January.

Recently Adopted Accounting Pronouncements: In July 2012, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2012-02, Testing Indefinite-Lived Intangible Assets for Impairment. The purpose of ASU 2012-02 is to simplify how an entity tests for impairment of indefinite-lived intangible assets. Entities will assess qualitative factors to determine whether it is more likely than not that a long-lived intangible asset’s fair value is less than its carrying value. In instances where the fair value is determined to be less than the carrying value, entities will perform the two-step quantitative goodwill impairment test. The Company adopted this standard effective September 1, 2013, and it had no material impact on the consolidated financial statements.

In February 2013, the FASB issued ASU 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. Under ASU 2013-02, an entity is required to provide information about the amounts reclassified out of accumulated other comprehensive income (“AOCI”) by component. In addition, an entity is required to present, either on the face of the financial statements or in the notes, significant amounts reclassified out of AOCI by the respective line items of net income, but only if the amount reclassified is required to be reclassified in its entirety in the same reporting period. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide additional details about those amounts. ASU 2013-02 does not change the current requirements for reporting net income or other comprehensive income in the financial statements. The Company adopted this standard effective September 1, 2013, and it had no material impact on the consolidated financial statements.

Recently Issued Accounting Pronouncements: In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. Under ASU 2014-09, an entity will recognize revenue when it transfers promised goods or services to customers in an amount that reflects what it expects in exchange for the goods or services. It also requires more detailed disclosures to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The Company does not expect the provision of ASU 2014-09 to have a material impact on its consolidated financial statements. This update will be effective for the Company at the beginning of its fiscal 2018 year.