Segment Reporting - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) units	Mar. 31, 2022 USD ($)	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	$ 693,617	$ 649,004
Assets	67,675,759	69,525,082	$ 67,637,917
US
Segment Reporting Information [Line Items]
Net Revenue	125,045	103,174
Assets	13,506,272		12,718,775
Other
Segment Reporting Information [Line Items]
Net Revenue	20,669	18,157
Assets	1,195,763		1,377,715
Banco Popular de Puerto Rico
Segment Reporting Information [Line Items]
Bank loan origination	316,000	294,000
Banco Popular de Puerto Rico | US
Segment Reporting Information [Line Items]
Net Revenue	25,400	12,000
Assets	1,400,000		$ 1,200,000
Banco Popular de Puerto Rico | Other
Segment Reporting Information [Line Items]
Net Revenue	$ 11,600	$ 10,800