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Condensed consolidating financial information of guarantor and issuers of registered guaranteed securities - Additional Information (Details) | Sep. 30, 2020
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PNA Holding Co. |
Condensed income statements |
Wholly-owned subsidiary percentage | 100.00%

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- Definition Wholly-owned subsidiaries percentage. + References No definition available. + Details
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Namespace Prefix: | bpop_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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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
Name: | srt_CondensedIncomeStatementsCaptionsLineItems
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_NonGuarantorSubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |