Revenue from contracts with customers - Revenue streams (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Service charges on deposit accounts
Revenue from contract with customer	$ 147,476	$ 157,210	$ 162,698
BPPR
Revenue from contract with customer	437,669	419,377	405,970
BPPR | Service charges on deposit accounts
Revenue from contract with customer	137,297	146,073	151,453
BPPR | Debit card fees
Revenue from contract with customer	53,434	49,297	47,681
BPPR | Insurance fees, excluding reinsurance
Revenue from contract with customer	46,903	40,545	40,929
BPPR | Credit card fees excluding late fees and membership fees
Revenue from contract with customer	147,559	136,295	117,418
BPPR | Sale and administration of investment products
Revenue from contract with customer	26,316	23,553	23,634
BPPR | Trust fees
Revenue from contract with customer	26,160	23,614	24,855
Popular U.S.
Revenue from contract with customer	18,231	18,306	17,051
Popular U.S. | Service charges on deposit accounts
Revenue from contract with customer	10,179	11,137	11,245
Popular U.S. | Debit card fees
Revenue from contract with customer	853	876	956
Popular U.S. | Insurance fees, excluding reinsurance
Revenue from contract with customer	5,602	5,018	3,798
Popular U.S. | Credit card fees excluding late fees and membership fees
Revenue from contract with customer	1,597	1,275	1,052
Popular U.S. | Sale and administration of investment products
Revenue from contract with customer	0	0	0
Popular U.S. | Trust fees
Revenue from contract with customer	$ 0	$ 0	$ 0