Income taxes - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Income Taxes [Line Items]
Valuation allowance	$ 537,185,000		$ 537,185,000		$ 540,196,000
Net deferred tax assets (net of valuation allowance)	904,601,000		904,601,000		953,676,000
Net deferred tax asset	900,983,000		900,983,000		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			53,000	$ 165,000
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	43,503,000	$ 64,212,000	89,817,000	114,691,000
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	3,600,000		3,600,000		2,600,000
Popular, Inc Holding Co
Income Taxes [Line Items]
Valuation allowance	139,000,000		139,000,000
PR
Income Taxes [Line Items]
Valuation allowance	138,825,000		138,825,000		137,863,000
Net deferred tax asset	630,040,000		630,040,000		673,045,000
Income tax expense	43,503,000	$ 64,212,000	89,817,000	$ 114,691,000
US
Income Taxes [Line Items]
Valuation allowance	398,360,000		398,360,000		402,333,000
Net deferred tax asset	270,943,000		270,943,000		$ 277,992,000
Deferred Tax Assets	$ 669,000,000		$ 669,000,000