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Trust preferred securities - Trust preferred securities - Additional Information (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Nov. 01, 2021
Debt Instrument [Line Items]      
Trust Preferred Securities Subject To Phase Out Provision Of Dodd Frank Act $ 193 $ 193  
Popular Capital Trust I | Trust preferred securities redemption | 6.70% Cumulative Monthly Income Trust Preferred Securities      
Debt Instrument [Line Items]      
Cumulative monthly income trust preferred securities outstanding     $ 187
Capital securities     181
Common securities     $ 6