Revenue from contracts with customers - Revenue streams (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Service charges on deposit accounts
Revenue from contract with customer	$ 40,006	$ 41,312	$ 122,528	$ 121,085
BPPR
Revenue from contract with customer	104,945	102,745	315,487	297,550
BPPR | Service charges on deposit accounts
Revenue from contract with customer	37,047	38,496	114,025	112,732
BPPR | Debit card fees
Revenue from contract with customer	11,912	11,967	36,134	35,522
BPPR | Insurance fees, excluding reinsurance
Revenue from contract with customer	9,985	9,416	30,005	27,489
BPPR | Credit card fees excluding late fees and membership fees
Revenue from contract with customer	34,369	30,076	99,376	85,203
BPPR | Sale and administration of investment products
Revenue from contract with customer	5,952	6,216	17,760	17,726
BPPR | Trust fees
Revenue from contract with customer	5,680	6,574	18,187	18,878
Popular U.S.
Revenue from contract with customer	4,703	4,387	14,017	12,347
Popular U.S. | Service charges on deposit accounts
Revenue from contract with customer	2,959	2,816	8,503	8,353
Popular U.S. | Debit card fees
Revenue from contract with customer	221	243	660	723
Popular U.S. | Insurance fees, excluding reinsurance
Revenue from contract with customer	1,210	1,054	3,906	2,483
Popular U.S. | Credit card fees excluding late fees and membership fees
Revenue from contract with customer	313	274	948	788
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