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Merchandise Inventories (Detail) - USD ($) $ in Millions | Nov. 18, 2023 | Aug. 26, 2023
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Merchandise Inventories |  |
LIFO credit reserve balance | $ 57.0 | $ 59.0

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- Definition The value of (Last in First Out) LIFO inventory reserve as at the end of the reporting period. + References No definition available. + Details
Name: | azo_InventoryLifoReserves
Namespace Prefix: | azo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_InventoryDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration