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Popular, Inc. (Holding company only) financial information - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
BHD LEON      
Dividends distribution $ 4,300,000 $ 13,200,000  
Popular, Inc. Holding Co. | Equity Method Investee      
Dividends distribution 2,300,000 2,300,000 $ 2,300,000
Dividends and others received 3,000,000.0 2,300,000 2,300,000
Popular, Inc. Holding Co. | BHD LEON      
Dividends distribution $ 0 $ 12,500,000 $ 13,000,000.0