Segment Reporting - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) units	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number Of Operating Segments | units			2
Factors Used To Identify Entitys Reportable Segments			Banco Popular de Puerto Rico and Popular U.S. Management determined the reportable segments based on the internal reporting used to evaluate performance and to assess where to allocate resources.
Net Revenue	$ 693,569	$ 1,006,113	$ 2,079,325	$ 2,346,390
Assets	69,736,936	70,729,675	69,736,936	70,729,675	$ 67,637,917
US
Segment Reporting Information [Line Items]
Net Revenue	131,698	133,071	389,463	347,614
Assets	14,218,288		14,218,288		12,718,775
Other
Segment Reporting Information [Line Items]
Net Revenue	21,886	20,893	65,899	58,319
Assets	1,258,744		1,258,744		1,377,715
Banco Popular de Puerto Rico | US
Segment Reporting Information [Line Items]
Net Revenue			86,000	45,000
Assets	1,400,000		1,400,000		$ 1,200,000
Bank loan origination	$ 10,000	$ 69,000	33,000	160,000
Banco Popular de Puerto Rico | Other
Segment Reporting Information [Line Items]
Net Revenue			$ 33,600	$ 34,600