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Guarantees - Other Guarantees - Additional Information (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Guarantor Obligations    
Funds Advanced To Investors Under Servicing Agreements $ 49,877 $ 53,942
Popular, Inc. Holding Co.    
Guarantor Obligations    
Wholly-owned subsidiary percentage 100.00%  
Popular, Inc. Holding Co. | Debt Securities Payable    
Guarantor Obligations    
Guarantees, unamortized balance of the obligations $ 94,000 94,000
Financial Standby Letter Of Credit    
Guarantor Obligations    
Guarantees, unamortized balance of the obligations 100 200
Guarantee Type, Other | Popular, Inc. Holding Co. | Capital securities (trust preferred securities)    
Guarantor Obligations    
Guarantees, unamortized balance of the obligations $ 193,000 $ 193,000