Segment Reporting - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) units	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Segment Reporting Information
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	$ 691,273	$ 642,342	$ 1,340,277	$ 1,275,107
Assets	71,501,931	72,657,293	71,501,931	72,657,293	$ 75,097,899
US
Segment Reporting Information
Net Revenue	111,369	95,276	214,543	191,288
Assets	11,651,798		11,651,798		10,986,055
Other
Segment Reporting Information
Net Revenue	19,269	17,923	37,426	35,967
Assets	1,343,937		1,343,937		890,562
Banco Popular de Puerto Rico | US
Segment Reporting Information
Net Revenue			26,100	$ 25,500
Assets	831,000		$ 831,000		$ 595,000
Banco Popular de Puerto Rico | Other
Segment Reporting Information
Net Revenue	$ 23,000	$ 23,400