Income taxes - Additional Information (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Income Taxes [Line Items]
Valuation allowance	$ 541,351,000						$ 541,351,000		$ 540,196,000
Net deferred tax assets (net of valuation allowance)	896,426,000						896,426,000		953,676,000
Net deferred tax asset	895,213,000						895,213,000		951,037,000
Unrecognized tax benefits, accrued interest	2,700,000						2,700,000		2,600,000
Recognized Tax Benefits Current Interest On Income Taxes Accrued							79,000	$ 202,000
Accrual for the payment of penalties	0						0		0
Total amount of unrecognized tax benefits, that if recognized, would affect effective tax rate	4,400,000						4,400,000		4,300,000
Anticipated reduction in the total amount of unrecognized tax benefits within the next 12 months	1,500,000						1,500,000
Income tax expense	45,859,000			$ 67,986,000			135,676,000	182,677,000
Reduction as a result of lapse of statute of limitations	0	$ 0	$ 0	1,100,000	$ 0	$ 0
Other assets
Income Taxes [Line Items]
Net deferred tax assets (net of valuation allowance)	900,000,000						900,000,000		1,000,000,000.0
Other liabilities
Income Taxes [Line Items]
Net deferred tax liabilities	1,200,000						1,200,000		2,600,000
Popular, Inc Holding Co
Income Taxes [Line Items]
Valuation allowance	140,000,000						140,000,000
PR
Income Taxes [Line Items]
Valuation allowance	140,033,000						140,033,000		137,863,000
Net deferred tax asset	624,472,000						624,472,000		673,045,000
Income tax expense	45,859,000			$ 67,986,000			135,676,000	$ 182,677,000
US
Income Taxes [Line Items]
Valuation allowance	401,318,000						401,318,000		402,333,000
Net deferred tax asset	270,741,000						270,741,000		$ 277,992,000
Deferred Tax Assets	$ 672,000,000						$ 672,000,000