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BANKING AND FINANCIAL SERVICE REVENUES - Narrative (Details) $ in Billions | 3 Months Ended
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Sep. 30, 2024 USD ($)
Banking and Thrift, Interest [Abstract] |
Asset threshold | $ 10

X
- Definition Interchange Income And Service Charges, Asset Threshold + References No definition available. + Details
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Namespace Prefix: | ofg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_BankingAndThriftInterestAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration