Additional period for extension of agreement termination date.

No definition available.

Name:	azo_AdditionalPeriodForExtensionOfAgreementTerminationDate
Namespace Prefix:	azo_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

This ratio is defined as the ratio of consolidated earnings before interest, taxes and rents to consolidated interest expense plus consolidated rents.

+ References

No definition available.

+ Details

Name:	azo_DebtInstrumentCovenantConsolidatedInterestCoverageRatio
Namespace Prefix:	azo_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

The minimum consolidated interest coverage ratio for debt instruments.

+ References

No definition available.

+ Details

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Namespace Prefix:	azo_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482900/835-30-50-1

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

This item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of long-term debt instruments that have contractual principal amounts and for which the fair value option has been elected.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
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-Subparagraph (SX 210.5-02(19)(b))
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in YYYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
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-Subparagraph (SX 210.5-02(22)(b))
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-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
-Name Accounting Standards Codification
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Period Type:	instant

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term unsecured obligations issued by corporations and other borrowers to investors (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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Financing - Additional Information (Detail) $ in Thousands						12 Months Ended
Financing - Additional Information (Detail) $ in Thousands	Aug. 18, 2024 USD ($)	Jul. 17, 2023 USD ($)	Jan. 17, 2023 USD ($)	Nov. 15, 2022 USD ($)	Jan. 18, 2022 USD ($)	Aug. 31, 2024 USD ($)	Jun. 28, 2024 USD ($)	Oct. 25, 2023 USD ($)	Aug. 26, 2023 USD ($)	Jul. 21, 2023 USD ($)	Jan. 27, 2023 USD ($)	Aug. 01, 2022 USD ($)	Nov. 15, 2021 USD ($)	Nov. 14, 2021 USD ($)
Debt Instrument [Line Items]
Minimum debt covenant interest coverage ratio to be maintained quarterly						2.5
Debt covenant interest coverage ratio						5.4
Remaining borrowing capacity under revolving credit agreement						$ 2,200,000
Fair value of the Company's debt						9,000,000			$ 7,300,000
Excess (shortfall) of fair value of debt over (from) carrying value						3,500			(406,600)
Revolving Credit Agreement
Debt Instrument [Line Items]
Amount available under credit facility													$ 2,250,000	$ 2,000,000
Maximum amount available under credit facility													$ 3,250,000	$ 2,250,000
Additional amount of year(s) to extend termination date of agreement				1 year
Letters of credit, outstanding						1,800
Extended expiration of credit facility				1 year
Swingline Loans
Debt Instrument [Line Items]
Maximum amount available under credit facility				$ 75,000
Individual Issuer, Letter of Credit
Debt Instrument [Line Items]
Maximum amount available under credit facility				50,000
Letter of Credit
Debt Instrument [Line Items]
Maximum amount available under credit facility				$ 250,000		25,000
Borrowings, outstanding						141,600
Letters of credit, outstanding						0
Master Extension Agreement
Debt Instrument [Line Items]
Credit facility expiration date				Nov. 15, 2027
Revolving Credit Facility
Debt Instrument [Line Items]
Borrowings, outstanding						0
Commercial paper
Debt Instrument [Line Items]
Commercial paper borrowings						580,000			1,209,600
3.125% Senior Notes due April 2024, effective interest rate 3.32%
Debt Instrument [Line Items]
Senior notes									$ 300,000
Stated interest rate percentage	3.125%								3.125%
Repayments of Debt	$ 300,000
3.250% Senior Notes due April 2025, effective interest rate 3.36%
Debt Instrument [Line Items]
Senior notes						$ 400,000			$ 400,000
Stated interest rate percentage						3.25%			3.25%
3.625% Senior Notes due April 2025, effective interest rate 3.78%
Debt Instrument [Line Items]
Senior notes						$ 500,000			$ 500,000
Stated interest rate percentage						3.625%			3.625%
6.250% Senior Notes due November 2028, effective interest rate 6.46%
Debt Instrument [Line Items]
Senior notes						$ 500,000		$ 500,000
Stated interest rate percentage						6.25%		6.25%
6.550% Senior Notes due November 2033, effective interest rate 6.71%
Debt Instrument [Line Items]
Senior notes						$ 500,000		$ 500,000
Stated interest rate percentage						6.55%		6.55%
2.875% Senior Notes due January 2023, effective interest rate 3.21%
Debt Instrument [Line Items]
Stated interest rate percentage			2.875%
Repayments of Debt			$ 300,000
3.125% Senior Notes due July 2023, effective interest rate 3.26%
Debt Instrument [Line Items]
Stated interest rate percentage		3.125%
Repayments of Debt		$ 500,000
3.700% Senior Notes due April 2022, effective interest rate 3.85%
Debt Instrument [Line Items]
Stated interest rate percentage					3.70%
Repayments of Debt					$ 500,000
5.100% Senior Notes due July 2029
Debt Instrument [Line Items]
Senior notes							$ 600,000
Stated interest rate percentage							5.10%
5.400% Senior Notes due July 2034
Debt Instrument [Line Items]
Senior notes							$ 700,000
Stated interest rate percentage							5.40%
5.050% Senior Notes due July 2026, effective interest rate 5.09%
Debt Instrument [Line Items]
Senior notes						$ 450,000			$ 450,000	$ 450,000
Stated interest rate percentage						5.05%			5.05%	5.05%
5.200% Senior Notes due August 2033, effective interest rate 5.22%
Debt Instrument [Line Items]
Senior notes						$ 300,000			$ 300,000	$ 300,000
Stated interest rate percentage						5.20%			5.20%	5.20%
4.500% Senior Notes due February 2028, effective interest rate 4.43%
Debt Instrument [Line Items]
Senior notes						$ 450,000			$ 450,000		$ 450,000
Stated interest rate percentage						4.50%			4.50%		4.50%
4.750% Senior Notes due February 2033, effective interest rate 4.70%
Debt Instrument [Line Items]
Senior notes						$ 550,000			$ 550,000		$ 550,000
Stated interest rate percentage						4.75%			4.75%		4.75%
4.750% Senior Notes due August 2032, effective interest rate 4.76%
Debt Instrument [Line Items]
Senior notes						$ 750,000			$ 750,000			$ 750,000
Stated interest rate percentage						4.75%			4.75%			4.75%