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Commitments and contingencies - Legal Proceedings - Additional Information (Details) $ in Millions | 1 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 28, 2021 USD ($) | Jun. 28, 2021 Defendant | Jul. 30, 2019 Defendant Plaintiff | Sep. 30, 2021 USD ($) claims
Hazard Insurance Commision Related Litigation |  |  |  |
Legal Matters And Contingencies |  |  |  |
Loss Contingency Damages Sought Value |  |  |  | $ 400.0
PB | Aileen Betances, et al. v. Popular Bank, et al |  |  |  |
Legal Matters And Contingencies |  |  |  |
Number of plaintiffs | Plaintiff |  |  | 5 |
Loss Contingency Number Of Defendants | Defendant |  | 3 | 5 |
PB | Damian Reyes, et al. v. Popular Bank, et al |  |  |  |
Legal Matters And Contingencies |  |  |  |
Number of plaintiffs | Plaintiff |  |  | 3 |
Loss Contingency Number Of Defendants | Defendant |  |  | 6 |
Aggregate Arbitrations with Claimed Damages | Popular Securities |  |  |  |
Legal Matters And Contingencies |  |  |  |
Loss Contingency Pending Claims Number | claims |  |  |  | 104
Loss Contingency Damages Sought Value |  |  |  | $ 107.0
One arbitration with Claimed damages | Popular Securities |  |  |  |
Legal Matters And Contingencies |  |  |  |
Loss Contingency Damages Sought Value |  |  |  | 30.0
One arbitration with Claimed damages | Popular Securities | Subsequent event |  |  |  |
Legal Matters And Contingencies |  |  |  |
Litigation settlement amount awarded | $ 6.9 |  |  |
Minimum |  |  |  |
Legal Matters And Contingencies |  |  |  |
Loss Contingency Range Of Possible Loss Portion Not Accrued |  |  |  | 0.0
Minimum | PB | PB Employment Related Litigation |  |  |  |
Legal Matters And Contingencies |  |  |  |
Loss Contingency Damages Sought Value |  |  |  | 100.0
Maximum |  |  |  |
Legal Matters And Contingencies |  |  |  |
Loss Contingency Range Of Possible Loss Portion Not Accrued |  |  |  | $ 34.7

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