Note Revenue from contracts with customers - Revenue strems (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Service charges on deposit accounts
Revenue From Contract With Customer Excluding Assessed Tax	$ 38,691	$ 36,455
BPPR
Revenue From Contract With Customer Excluding Assessed Tax	81,768	79,310
BPPR | Service charges on deposit accounts
Revenue From Contract With Customer Excluding Assessed Tax	35,064	33,179
BPPR | Debit card fees
Revenue From Contract With Customer Excluding Assessed Tax	10,899	11,395
BPPR | Insurance fees, excluding reinsurance
Revenue From Contract With Customer Excluding Assessed Tax	7,445	7,237
BPPR | Credit card fees excluding late fees and membership fees
Revenue From Contract With Customer Excluding Assessed Tax	18,286	16,803
BPPR | Sale and administration of investment products
Revenue From Contract With Customer Excluding Assessed Tax	5,259	5,355
BPPR | Trust fees
Revenue From Contract With Customer Excluding Assessed Tax	4,815	5,341
Popular U.S.
Revenue From Contract With Customer Excluding Assessed Tax	4,884	4,381
Popular U.S. | Service charges on deposit accounts
Revenue From Contract With Customer Excluding Assessed Tax	3,627	3,276
Popular U.S. | Debit card fees
Revenue From Contract With Customer Excluding Assessed Tax	271	243
Popular U.S. | Insurance fees, excluding reinsurance
Revenue From Contract With Customer Excluding Assessed Tax	770	622
Popular U.S. | Credit card fees excluding late fees and membership fees
Revenue From Contract With Customer Excluding Assessed Tax	216	240
Popular U.S. | Sale and administration of investment products
Revenue From Contract With Customer Excluding Assessed Tax	0	0
Popular U.S. | Trust fees
Revenue From Contract With Customer Excluding Assessed Tax	$ 0	$ 0