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v3.23.1

REVENUE RECOGNITION (Narrative) (Details) | 6 Months Ended
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Feb. 28, 2023 USD ($) country
Disaggregation of Revenue [Line Items] |
Number of countries | country | 12
Annual membership fee | $ 75
Platinum membership rebate (as percent) | 2.00%
Maximum Platinum annual membership rebate | $ 500
Breakage revenue (as percent) | 5.00%
Platinum membership recorded liability (as percent) | 95.00%
Platinum membership redemption rate (as percent) | 100.00%
Gift Card |
Disaggregation of Revenue [Line Items] |
Platinum membership redemption period | 1 year

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- Definition Maximum Platinum Membership Rebate + References No definition available. + Details
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Namespace Prefix: | psmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Percentage of Platinum Membership Rebate + References No definition available. + Details
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Namespace Prefix: | psmt_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Platinum Membership Annual Fee + References No definition available. + Details
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Namespace Prefix: | psmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Platinum Membership Breakage Revenue Percent + References No definition available. + Details
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Namespace Prefix: | psmt_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Platinum Membership Recorded Liability + References No definition available. + Details
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Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Platinum Membership Redemption Rate + References No definition available. + Details
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Namespace Prefix: | psmt_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Revenue From Contract With Customers, Expiration Period + References No definition available. + Details
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- 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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of countries in which the entity operates as of balance sheet date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |