DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Interest Rate Derivatives (Details) - Cash Flow Hedging	Aug. 31, 2026 USD ($)
Colombia Subsidiary $18.7M Cross Currency Interest Rate Swap
Derivative [Line Items]
Initial US$ Notional Amount	$ 18,700,000
Floating Leg ‎(swap counter-party)	6.00%
Fixed Rate ‎for PSMT Subsidiary	10.91%
Colombia Subsidiary $10M Cross Currency Interest Rate Swap
Derivative [Line Items]
Initial US$ Notional Amount	$ 10,000,000
Floating Leg ‎(swap counter-party)	3.00%
Fixed Rate ‎for PSMT Subsidiary	7.61%
Colombia Subsidiary $12.5M Cross Currency Interest Rate Swap
Derivative [Line Items]
Initial US$ Notional Amount	$ 12,500,000
Floating Leg ‎(swap counter-party)	4.00%
Fixed Rate ‎for PSMT Subsidiary	9.15%
Colombia Subsidiary $10M Cross Currency Interest Rate Swap One
Derivative [Line Items]
Initial US$ Notional Amount	$ 10,000,000
Floating Leg ‎(swap counter-party)	5.00%
Fixed Rate ‎for PSMT Subsidiary	11.27%
Colombia Subsidiary $10M Cross Currency Interest Rate Swap Two
Derivative [Line Items]
Initial US$ Notional Amount	$ 10,000,000
Floating Leg ‎(swap counter-party)	4.00%
Fixed Rate ‎for PSMT Subsidiary	11.40%
Colombia Subsidiary $10M Cross Currency Interest Rate Swap Three
Derivative [Line Items]
Initial US$ Notional Amount	$ 10,000,000
Floating Leg ‎(swap counter-party)	3.00%
Fixed Rate ‎for PSMT Subsidiary	9.04%
Jamaica subsidiary $14.25M Interest Rate Swap
Derivative [Line Items]
Initial US$ Notional Amount	$ 14,250,000
Floating Leg ‎(swap counter-party)	0.00%
Fixed Rate ‎for PSMT Subsidiary	5.27%
SD Property Managers, LLC $12.5M Interest Rate Swap
Derivative [Line Items]
Initial US$ Notional Amount	$ 12,500,000
Fixed Rate ‎for PSMT Subsidiary	4.02%
Panama subsidiary $16.5M Interest Rate Swap
Derivative [Line Items]
Initial US$ Notional Amount	$ 16,500,000
Floating Leg ‎(swap counter-party)	2.95%
Fixed Rate ‎for PSMT Subsidiary	4.43%
Pricesmart, Inc $35.7M Interest Rate Swap
Derivative [Line Items]
Initial US$ Notional Amount	$ 35,700,000
Floating Leg ‎(swap counter-party)	1.70%
Fixed Rate ‎for PSMT Subsidiary	3.65%

Fixed interest rate related to the interest rate derivative.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-5

+ Details

Name:	us-gaap_DerivativeFixedInterestRate
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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-5A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

+ Details

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

- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

+ Details

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Variable interest rate in effect as of the balance sheet date related to the interest rate derivative.

+ References

+ Details

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

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=psmt_ColombiaSubsidiary18.7MCrossCurrencyInterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=psmt_ColombiaSubsidiary10MCrossCurrencyInterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=psmt_ColombiaSubsidiary12.5MCrossCurrencyInterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=psmt_ColombiaSubsidiary10MCrossCurrencyInterestRateSwapOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=psmt_ColombiaSubsidiary10MCrossCurrencyInterestRateSwapTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=psmt_ColombiaSubsidiary10MCrossCurrencyInterestRateSwapThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=psmt_JamaicaSubsidiary14.25MInterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=psmt_SDPropertyManagersLLC12.5MInterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=psmt_PanamaSubsidiary16.5MInterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=psmt_PricesmartInc35.7MInterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: