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Leases - Supplemental cash flow information and other related information - Subnote (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2021 USD ($)
Branches closure | PB |
Lease |
Lease termination payment | $ 7.8

X
- Definition Amount of payments made in connection with the termination of finance and operating leases. + References No definition available. + Details
Name: | bpop_TermPaymentsFinanceOperatingLeases
Namespace Prefix: | bpop_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_FacilityClosingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=bpop_PopularBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |