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Subsequent Events (Detail) $ in Millions | Dec. 08, 2020 USD ($)
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Subsequent Events |
Subsequent Event [Line Items] |
Employees expenses, Covid 19 | $ 50.0

X
- Definition Amount of employees paid time off expenses due to additional week of emergency from effect of Covid -19. + References No definition available. + Details
Name: | azo_EmployeesExpensesCovid19
Namespace Prefix: | azo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |