Guarantees - Other Guarantees - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Guarantor Obligations [Line Items]
Funds Advanced To Investors Under Servicing Agreements	$ 47,594	$ 48,557
Popular, Inc. Holding Co.
Guarantor Obligations [Line Items]
Wholly-owned subsidiary percentage	100.00%
Popular, Inc. Holding Co. | Debt Securities Payable
Guarantor Obligations [Line Items]
Guarantees, unamortized balance of the obligations	$ 94,000	94,000
Financial Standby Letter Of Credit
Guarantor Obligations [Line Items]
Guarantees, unamortized balance of the obligations	1,000	1,000
Guarantee Type, Other | Popular, Inc. Holding Co. | Capital securities (trust preferred securities)
Guarantor Obligations [Line Items]
Guarantees, unamortized balance of the obligations	$ 193,000	$ 193,000