Revenue from contracts with customers - Revenue streams (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Service charges on deposit accounts
Revenue from contract with customer	$ 151,343	$ 147,476	$ 157,210
BPPR
Revenue from contract with customer	454,786	437,669	419,377
BPPR | Service charges on deposit accounts
Revenue from contract with customer	141,240	137,297	146,073
BPPR | Debit card fees
Revenue from contract with customer	105,017	98,779	92,633
BPPR | Insurance fees, excluding reinsurance
Revenue from contract with customer	44,808	46,903	40,545
BPPR | Credit card fees excluding late fees and membership fees
Revenue from contract with customer	102,849	102,214	92,959
BPPR | Sale and administration of investment products
Revenue from contract with customer	33,213	26,316	23,553
BPPR | Trust fees
Revenue from contract with customer	27,659	26,160	23,614
Popular U.S.
Revenue from contract with customer	19,429	18,231	18,306
Popular U.S. | Service charges on deposit accounts
Revenue from contract with customer	10,103	10,179	11,137
Popular U.S. | Debit card fees
Revenue from contract with customer	793	853	876
Popular U.S. | Insurance fees, excluding reinsurance
Revenue from contract with customer	6,946	5,602	5,018
Popular U.S. | Credit card fees excluding late fees and membership fees
Revenue from contract with customer	1,587	1,597	1,275
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