Revenue from contracts with customers - Revenue streams (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Service charges on deposit accounts
Revenue from contract with customer	$ 37,781	$ 41,809	$ 72,459	$ 82,522
BPPR
Revenue from contract with customer	112,118	108,795	216,644	210,542
BPPR | Service charges on deposit accounts
Revenue from contract with customer	35,253	38,993	67,405	76,978
BPPR | Debit card fees
Revenue from contract with customer	13,377	12,660	26,325	24,222
BPPR | Insurance fees, excluding reinsurance
Revenue from contract with customer	12,152	9,982	22,950	20,020
BPPR | Credit card fees excluding late fees and membership fees
Revenue from contract with customer	38,392	34,785	74,566	65,007
BPPR | Sale and administration of investment products
Revenue from contract with customer	6,076	6,017	12,634	11,808
BPPR | Trust fees
Revenue from contract with customer	6,868	6,358	12,764	12,507
Popular U.S.
Revenue from contract with customer	4,375	4,723	9,005	9,314
Popular U.S. | Service charges on deposit accounts
Revenue from contract with customer	2,528	2,816	5,054	5,544
Popular U.S. | Debit card fees
Revenue from contract with customer	223	222	441	439
Popular U.S. | Insurance fees, excluding reinsurance
Revenue from contract with customer	1,288	1,374	2,595	2,696
Popular U.S. | Credit card fees excluding late fees and membership fees
Revenue from contract with customer	336	311	915	635
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