Borrowings - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Nov. 01, 2021
Debt Instrument [Line Items]
FHLB advances maximum amount available	$ 3,300,000	$ 3,000,000
Federal Home Loan Bank Advances And Letters Of Credit Amount Used	800,000	600,000
Assets sold under agreements to repurchase	148,609	91,603
Other short-term borrowings	365,000	75,000
Popular Capital Trust I | Trust preferred securities redemption | 6.70% Cumulative Monthly Income Trust Preferred Securities
Debt Instrument [Line Items]
Capital securities			$ 181,000
Common securities			6,000
Cumulative monthly income trust preferred securities outstanding			$ 187,000
Advances with FRB
Debt Instrument [Line Items]
Line Of Credit Facility Current Borrowing Capacity	1,400,000	1,300,000
Federal Home Loan Bank
Debt Instrument [Line Items]
Line Of Credit Facility Capacity Available For Specific Purpose Other Than For Trade Purchases	400,000	1,200,000
Other short-term borrowings	$ 365,000	$ 75,000