Valuation date of commercial paper, in YYYY-MM-DD format.

No definition available.

Name:	azo_CommercialPaperValuationDate
Namespace Prefix:	azo_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Maturity date (by month and year) for debt instrument.

+ References

No definition available.

+ Details

Name:	azo_DebtInstrumentMaturityMonthAndYear
Namespace Prefix:	azo_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
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

No definition available.

+ Details

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

- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

+ References

No definition available.

+ Details

Name:	us-gaap_LongtermDebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesNineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesTenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesElevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesTwelveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesThirteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesFifteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesSeventeenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesEighteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesNineteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesTwentyThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesTwentyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=azo_SeniorNotesFourteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_CommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Financing - Schedule of Debt - Interest Rates And Maturity (Details)	12 Months Ended
	Aug. 27, 2022	Aug. 28, 2021	Aug. 01, 2022	Jan. 18, 2022	Aug. 14, 2020	Mar. 30, 2020
4.000% Senior Notes due November 2020, effective interest rate of 4.43%
Debt Instrument [Line Items]
Stated interest rate percentage					4.00%
3.700% Senior Notes due April 2022, effective interest rate of 3.85%
Debt Instrument [Line Items]
Stated interest rate percentage	3.70%	3.70%		3.70%
Debt instrument maturity, month and year	2022-04	2022-04
Effective interest rate		3.85%
2.875% Senior Notes due January 2023, effective interest rate of 3.21%
Debt Instrument [Line Items]
Stated interest rate percentage	2.875%	2.875%
Debt instrument maturity, month and year	2023-01	2023-01
Effective interest rate	3.21%	3.21%
3.125% Senior Notes due July 2023, effective interest rate of 3.26%
Debt Instrument [Line Items]
Stated interest rate percentage	3.125%	3.125%
Debt instrument maturity, month and year	2023-07	2023-07
Effective interest rate	3.26%	3.26%
3.125% Senior Notes due April 2024, effective interest rate 3.32%
Debt Instrument [Line Items]
Stated interest rate percentage	3.125%	3.125%
Debt instrument maturity, month and year	2024-04	2024-04
Effective interest rate	3.32%	3.32%
3.250% Senior Notes due April 2025, effective interest rate 3.36%
Debt Instrument [Line Items]
Stated interest rate percentage	3.25%	3.25%
Debt instrument maturity, month and year	2025-04	2025-04
Effective interest rate	3.36%	3.36%
3.625% Senior Notes due April 2025, effective interest rate 3.78%
Debt Instrument [Line Items]
Stated interest rate percentage	3.625%	3.625%				3.625%
Debt instrument maturity, month and year	2025-04	2025-04
Effective interest rate	3.78%	3.78%
3.125% Senior Notes due April 2026, effective interest rate of 3.28%
Debt Instrument [Line Items]
Stated interest rate percentage	3.125%	3.125%
Debt instrument maturity, month and year	2026-04	2026-04
Effective interest rate	3.28%	3.28%
3.750% Senior Notes due June 2027, effective interest rate of 3.83%
Debt Instrument [Line Items]
Stated interest rate percentage	3.75%	3.75%
Debt instrument maturity, month and year	2027-06	2027-06
Effective interest rate	3.83%	3.83%
3.750% Senior Notes due April 2029, effective interest rate of 3.86%
Debt Instrument [Line Items]
Stated interest rate percentage	3.75%	3.75%
Debt instrument maturity, month and year	2029-04	2029-04
Effective interest rate	3.86%	3.86%
4.000% Senior Notes due April 2030, effective interest rate 4.09%
Debt Instrument [Line Items]
Stated interest rate percentage	4.00%	4.00%				4.00%
Debt instrument maturity, month and year	2030-04	2030-04
Effective interest rate	4.09%	4.09%
1.650% Senior Notes due January 2031, effective interest rate of 2.19%
Debt Instrument [Line Items]
Stated interest rate percentage	1.65%	1.65%			1.65%
Debt instrument maturity, month and year	2031-01	2031-01
Effective interest rate	2.19%	2.19%
4.750% Senior Notes due August 2032, effective interest rate of 4.76%
Debt Instrument [Line Items]
Stated interest rate percentage	4.75%	4.75%	4.75%
Debt instrument maturity, month and year	2032-08	2032-08
Effective interest rate	4.76%	4.76%
Commercial paper, weighted average interest rate of 2.43% at August 27, 2022
Debt Instrument [Line Items]
Commercial paper valuation date	Aug. 27, 2022
Weighted average interest rate of commercial paper	2.43%