Revenue from contracts with customers - Revenue streams (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Service charges on deposit accounts
Revenue from contract with customer	$ 41,809	$ 40,153	$ 82,522	$ 79,773
BPPR
Revenue from contract with customer	108,795	101,401	210,542	194,805
BPPR | Service charges on deposit accounts
Revenue from contract with customer	38,993	37,377	76,978	74,236
BPPR | Debit card fees
Revenue from contract with customer	12,660	12,213	24,222	23,555
BPPR | Insurance fees, excluding reinsurance
Revenue from contract with customer	9,982	9,835	20,020	18,073
BPPR | Credit card fees excluding late fees and membership fees
Revenue from contract with customer	34,785	29,717	65,007	55,127
BPPR | Sale and administration of investment products
Revenue from contract with customer	6,017	5,970	11,808	11,510
BPPR | Trust fees
Revenue from contract with customer	6,358	6,289	12,507	12,304
Popular U.S.
Revenue from contract with customer	4,723	4,107	9,314	7,960
Popular U.S. | Service charges on deposit accounts
Revenue from contract with customer	2,816	2,776	5,544	5,537
Popular U.S. | Debit card fees
Revenue from contract with customer	222	245	439	480
Popular U.S. | Insurance fees, excluding reinsurance
Revenue from contract with customer	1,374	820	2,696	1,429
Popular U.S. | Credit card fees excluding late fees and membership fees
Revenue from contract with customer	311	266	635	514
Popular U.S. | Sale and administration of investment products
Revenue from contract with customer	0	0	0	0
Popular U.S. | Trust fees
Revenue from contract with customer	$ 0	$ 0	$ 0	$ 0