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Allowance for credit losses - Amortized cost basis of the loans modified to borrowers experiencing financial difficulties (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Interest Rate Reduction        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 1,657,000 $ 1,883,000 $ 6,165,000 $ 5,591,000
% of total class of Financing Receivables 0.00% 0.01% 0.02% 0.02%
Interest Rate Reduction | Mortgages        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis     $ 69,000 $ 42,000
% of total class of Financing Receivables     0.00% 0.00%
Interest Rate Reduction | Commercial | CRE owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 147,000   $ 175,000
% of total class of Financing Receivables   0.00%   0.01%
Interest Rate Reduction | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 742,000 $ 693,000 $ 2,692,000 $ 2,756,000
% of total class of Financing Receivables 0.01% 0.01% 0.03% 0.04%
Interest Rate Reduction | Consumer | Credit card        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 202,000 $ 213,000 $ 617,000 $ 721,000
% of total class of Financing Receivables 0.02% 0.02% 0.05% 0.06%
Interest Rate Reduction | Consumer | Personal loans        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 713,000 $ 830,000 $ 2,782,000 $ 1,873,000
% of total class of Financing Receivables 0.04% 0.04% 0.15% 0.10%
Interest Rate Reduction | Consumer | Other        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis     $ 5,000 $ 24,000
% of total class of Financing Receivables     0.00% 0.01%
Interest Rate Reduction | Puerto Rico        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 1,657,000 $ 1,883,000 $ 6,165,000 $ 5,591,000
% of total class of Financing Receivables 0.01% 0.01% 0.02% 0.02%
Interest Rate Reduction | Puerto Rico | Mortgages        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis     $ 69,000 $ 42,000
% of total class of Financing Receivables     0.00% 0.00%
Interest Rate Reduction | Puerto Rico | Commercial | CRE owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 147,000   $ 175,000
% of total class of Financing Receivables   0.01%   0.01%
Interest Rate Reduction | Puerto Rico | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 742,000 $ 693,000 $ 2,692,000 $ 2,756,000
% of total class of Financing Receivables 0.01% 0.01% 0.05% 0.05%
Interest Rate Reduction | Puerto Rico | Consumer | Credit card        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 202,000 $ 213,000 $ 617,000 $ 721,000
% of total class of Financing Receivables 0.02% 0.02% 0.05% 0.06%
Interest Rate Reduction | Puerto Rico | Consumer | Personal loans        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 713,000 $ 830,000 $ 2,782,000 $ 1,873,000
% of total class of Financing Receivables 0.04% 0.05% 0.15% 0.11%
Interest Rate Reduction | Puerto Rico | Consumer | Other        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis     $ 5,000 $ 24,000
% of total class of Financing Receivables     0.00% 0.02%
Interest Rate Reduction | Popular U.S.        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%
Interest Rate Reduction | Popular U.S. | Mortgages        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis     $ 0 $ 0
% of total class of Financing Receivables     0.00% 0.00%
Interest Rate Reduction | Popular U.S. | Commercial | CRE owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 0   $ 0
% of total class of Financing Receivables   0.00%   0.00%
Interest Rate Reduction | Popular U.S. | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%
Interest Rate Reduction | Popular U.S. | Consumer | Credit card        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%
Interest Rate Reduction | Popular U.S. | Consumer | Personal loans        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%
Interest Rate Reduction | Popular U.S. | Consumer | Other        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis     $ 0 $ 0
% of total class of Financing Receivables     0.00% 0.00%
Term extension        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 40,294,000 $ 58,603,000 $ 135,882,000 $ 151,659,000
% of total class of Financing Receivables 0.10% 0.16% 0.35% 0.42%
Term extension | Construction        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 768,000   $ 768,000
% of total class of Financing Receivables   0.07%   0.07%
Term extension | Mortgages        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 15,660,000 $ 12,279,000 $ 38,698,000 $ 42,724,000
% of total class of Financing Receivables 0.18% 0.15% 0.45% 0.53%
Term extension | Commercial | Commercial multi-family        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 10,570,000   $ 10,570,000
% of total class of Financing Receivables   0.44%   0.44%
Term extension | Commercial | CRE non-owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 1,670,000 $ 13,108,000 $ 60,425,000 $ 55,655,000
% of total class of Financing Receivables 0.03% 0.25% 1.11% 1.07%
Term extension | Commercial | CRE owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 13,618,000 $ 764,000 $ 18,854,000 $ 17,515,000
% of total class of Financing Receivables 0.44% 0.02% 0.61% 0.57%
Term extension | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 9,097,000 $ 20,966,000 $ 17,088,000 $ 23,837,000
% of total class of Financing Receivables 0.11% 0.28% 0.21% 0.32%
Term extension | Consumer | Personal loans        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 157,000 $ 148,000 $ 638,000 $ 537,000
% of total class of Financing Receivables 0.01% 0.01% 0.03% 0.03%
Term extension | Consumer | Auto Loan        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 92,000   $ 179,000 $ 53,000
% of total class of Financing Receivables 0.00%   0.00% 0.00%
Term extension | Puerto Rico        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 38,895,000 $ 47,604,000 $ 75,167,000 $ 133,981,000
% of total class of Financing Receivables 0.14% 0.19% 0.28% 0.52%
Term extension | Puerto Rico | Construction        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 768,000   $ 768,000
% of total class of Financing Receivables   0.40%   0.40%
Term extension | Puerto Rico | Mortgages        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 15,194,000 $ 11,850,000 $ 37,568,000 $ 41,649,000
% of total class of Financing Receivables 0.21% 0.18% 0.52% 0.62%
Term extension | Puerto Rico | Commercial | Commercial multi-family        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 0   $ 0
% of total class of Financing Receivables   0.00%   0.00%
Term extension | Puerto Rico | Commercial | CRE non-owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 1,670,000 $ 13,108,000 $ 1,773,000 $ 55,655,000
% of total class of Financing Receivables 0.05% 0.42% 0.05% 1.77%
Term extension | Puerto Rico | Commercial | CRE owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 13,618,000 $ 764,000 $ 18,854,000 $ 11,482,000
% of total class of Financing Receivables 1.14% 0.05% 1.58% 0.82%
Term extension | Puerto Rico | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 8,172,000 $ 20,966,000 $ 16,163,000 $ 23,837,000
% of total class of Financing Receivables 0.14% 0.41% 0.28% 0.46%
Term extension | Puerto Rico | Consumer | Personal loans        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 149,000 $ 148,000 $ 630,000 $ 537,000
% of total class of Financing Receivables 0.01% 0.01% 0.03% 0.03%
Term extension | Puerto Rico | Consumer | Auto Loan        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 92,000   $ 179,000 $ 53,000
% of total class of Financing Receivables 0.00%   0.00% 0.00%
Term extension | Popular U.S.        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 1,399,000 $ 10,999,000 $ 60,715,000 $ 17,678,000
% of total class of Financing Receivables 0.01% 0.11% 0.53% 0.17%
Term extension | Popular U.S. | Construction        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 0   $ 0
% of total class of Financing Receivables   0.00%   0.00%
Term extension | Popular U.S. | Mortgages        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 466,000 $ 429,000 $ 1,130,000 $ 1,075,000
% of total class of Financing Receivables 0.04% 0.03% 0.09% 0.08%
Term extension | Popular U.S. | Commercial | Commercial multi-family        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 10,570,000   $ 10,570,000
% of total class of Financing Receivables   0.50%   0.50%
Term extension | Popular U.S. | Commercial | CRE non-owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 58,652,000 $ 0
% of total class of Financing Receivables 0.00% 0.00% 2.72% 0.00%
Term extension | Popular U.S. | Commercial | CRE owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 6,033,000
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.36%
Term extension | Popular U.S. | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 925,000 $ 0 $ 925,000 $ 0
% of total class of Financing Receivables 0.04% 0.00% 0.04% 0.00%
Term extension | Popular U.S. | Consumer | Personal loans        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 8,000 $ 0 $ 8,000 $ 0
% of total class of Financing Receivables 0.01% 0.00% 0.01% 0.00%
Term extension | Popular U.S. | Consumer | Auto Loan        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0   $ 0 $ 0
% of total class of Financing Receivables 0.00%   0.00% 0.00%
Other-Than-Insignificant Payment Delays        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 102,926,000 $ 77,004,000 $ 195,844,000 $ 96,093,000
% of total class of Financing Receivables 0.27% 0.21% 0.51% 0.27%
Other-Than-Insignificant Payment Delays | Mortgages        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 303,000   $ 721,000 $ 127,000
% of total class of Financing Receivables 0.00%   0.01% 0.00%
Other-Than-Insignificant Payment Delays | Commercial | CRE non-owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 139,000   $ 139,000
% of total class of Financing Receivables   0.00%   0.00%
Other-Than-Insignificant Payment Delays | Commercial | CRE owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 22,889,000 $ 4,993,000 $ 29,763,000 $ 20,591,000
% of total class of Financing Receivables 0.74% 0.16% 0.96% 0.67%
Other-Than-Insignificant Payment Delays | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 79,734,000 $ 71,867,000 $ 165,360,000 $ 75,231,000
% of total class of Financing Receivables 0.97% 0.97% 2.01% 1.02%
Other-Than-Insignificant Payment Delays | Consumer | Credit card        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 5,000   $ 5,000
% of total class of Financing Receivables   0.00%   0.00%
Other-Than-Insignificant Payment Delays | Puerto Rico        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 102,926,000 $ 77,004,000 $ 195,844,000 $ 96,093,000
% of total class of Financing Receivables 0.38% 0.30% 0.72% 0.37%
Other-Than-Insignificant Payment Delays | Puerto Rico | Mortgages        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 303,000   $ 721,000 $ 127,000
% of total class of Financing Receivables 0.00%   0.01% 0.00%
Other-Than-Insignificant Payment Delays | Puerto Rico | Commercial | CRE non-owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 139,000   $ 139,000
% of total class of Financing Receivables   0.00%   0.00%
Other-Than-Insignificant Payment Delays | Puerto Rico | Commercial | CRE owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 22,889,000 $ 4,993,000 $ 29,763,000 $ 20,591,000
% of total class of Financing Receivables 1.91% 0.36% 2.49% 1.47%
Other-Than-Insignificant Payment Delays | Puerto Rico | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 79,734,000 $ 71,867,000 $ 165,360,000 $ 75,231,000
% of total class of Financing Receivables 1.39% 1.39% 2.87% 1.45%
Other-Than-Insignificant Payment Delays | Puerto Rico | Consumer | Credit card        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 5,000   $ 5,000
% of total class of Financing Receivables   0.00%   0.00%
Other-Than-Insignificant Payment Delays | Popular U.S.        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%
Other-Than-Insignificant Payment Delays | Popular U.S. | Mortgages        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0   $ 0 $ 0
% of total class of Financing Receivables 0.00%   0.00% 0.00%
Other-Than-Insignificant Payment Delays | Popular U.S. | Commercial | CRE non-owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 0   $ 0
% of total class of Financing Receivables   0.00%   0.00%
Other-Than-Insignificant Payment Delays | Popular U.S. | Commercial | CRE owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%
Other-Than-Insignificant Payment Delays | Popular U.S. | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%
Other-Than-Insignificant Payment Delays | Popular U.S. | Consumer | Credit card        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis   $ 0   $ 0
% of total class of Financing Receivables   0.00%   0.00%
Combination - Term Extension and Interest Rate Reduction        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 8,049,000 $ 7,608,000 $ 21,589,000 $ 21,244,000
% of total class of Financing Receivables 0.02% 0.02% 0.06% 0.06%
Combination - Term Extension and Interest Rate Reduction | Mortgages        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 2,153,000 $ 4,728,000 $ 9,202,000 $ 13,471,000
% of total class of Financing Receivables 0.03% 0.06% 0.11% 0.17%
Combination - Term Extension and Interest Rate Reduction | Commercial | CRE non-owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis       $ 889,000
% of total class of Financing Receivables       0.02%
Combination - Term Extension and Interest Rate Reduction | Commercial | CRE owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 166,000 $ 202,000 $ 166,000 $ 202,000
% of total class of Financing Receivables 0.01% 0.01% 0.01% 0.01%
Combination - Term Extension and Interest Rate Reduction | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 2,739,000 $ 44,000 $ 2,837,000 $ 615,000
% of total class of Financing Receivables 0.03% 0.00% 0.03% 0.01%
Combination - Term Extension and Interest Rate Reduction | Consumer | Personal loans        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 2,964,000 $ 2,634,000 $ 9,341,000 $ 6,067,000
% of total class of Financing Receivables 0.16% 0.14% 0.49% 0.32%
Combination - Term Extension and Interest Rate Reduction | Consumer | Auto Loan        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 27,000   $ 43,000  
% of total class of Financing Receivables 0.00%   0.00%  
Combination - Term Extension and Interest Rate Reduction | Puerto Rico        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 8,010,000 $ 7,543,000 $ 21,435,000 $ 20,865,000
% of total class of Financing Receivables 0.03% 0.03% 0.08% 0.08%
Combination - Term Extension and Interest Rate Reduction | Puerto Rico | Mortgages        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 2,153,000 $ 4,728,000 $ 9,202,000 $ 13,404,000
% of total class of Financing Receivables 0.03% 0.07% 0.13% 0.20%
Combination - Term Extension and Interest Rate Reduction | Puerto Rico | Commercial | CRE non-owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis       $ 889,000
% of total class of Financing Receivables       0.03%
Combination - Term Extension and Interest Rate Reduction | Puerto Rico | Commercial | CRE owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 166,000 $ 202,000 $ 166,000 $ 202,000
% of total class of Financing Receivables 0.01% 0.01% 0.01% 0.01%
Combination - Term Extension and Interest Rate Reduction | Puerto Rico | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 2,739,000 $ 44,000 $ 2,837,000 $ 615,000
% of total class of Financing Receivables 0.05% 0.00% 0.05% 0.01%
Combination - Term Extension and Interest Rate Reduction | Puerto Rico | Consumer | Personal loans        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 2,925,000 $ 2,569,000 $ 9,187,000 $ 5,755,000
% of total class of Financing Receivables 0.16% 0.15% 0.50% 0.33%
Combination - Term Extension and Interest Rate Reduction | Puerto Rico | Consumer | Auto Loan        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 27,000   $ 43,000  
% of total class of Financing Receivables 0.00%   0.00%  
Combination - Term Extension and Interest Rate Reduction | Popular U.S.        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 39,000 $ 65,000 $ 154,000 $ 379,000
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%
Combination - Term Extension and Interest Rate Reduction | Popular U.S. | Mortgages        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 67,000
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.01%
Combination - Term Extension and Interest Rate Reduction | Popular U.S. | Commercial | CRE non-owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis       $ 0
% of total class of Financing Receivables       0.00%
Combination - Term Extension and Interest Rate Reduction | Popular U.S. | Commercial | CRE owner occupied        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%
Combination - Term Extension and Interest Rate Reduction | Popular U.S. | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%
Combination - Term Extension and Interest Rate Reduction | Popular U.S. | Consumer | Personal loans        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 39,000 $ 65,000 $ 154,000 $ 312,000
% of total class of Financing Receivables 0.05% 0.05% 0.20% 0.26%
Combination - Term Extension and Interest Rate Reduction | Popular U.S. | Consumer | Auto Loan        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0   $ 0  
% of total class of Financing Receivables 0.00%   0.00%  
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 3,037,000 $ 885,000 $ 8,332,000 $ 1,445,000
% of total class of Financing Receivables 0.01% 0.00% 0.02% 0.00%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 371,000 $ 23,000 $ 1,157,000 $ 110,000
% of total class of Financing Receivables 0.00% 0.00% 0.01% 0.00%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Consumer | Credit card        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 2,666,000 $ 862,000 $ 7,175,000 $ 1,335,000
% of total class of Financing Receivables 0.22% 0.07% 0.59% 0.11%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Puerto Rico        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 3,037,000 $ 885,000 $ 8,332,000 $ 1,445,000
% of total class of Financing Receivables 0.01% 0.00% 0.03% 0.01%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Puerto Rico | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 371,000 $ 23,000 $ 1,157,000 $ 110,000
% of total class of Financing Receivables 0.01% 0.00% 0.02% 0.00%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Puerto Rico | Consumer | Credit card        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 2,666,000 $ 862,000 $ 7,175,000 $ 1,335,000
% of total class of Financing Receivables 0.22% 0.07% 0.59% 0.11%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Popular U.S.        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Popular U.S. | Commercial | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Popular U.S. | Consumer | Credit card        
Financing Receivable, Modifications [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivables 0.00% 0.00% 0.00% 0.00%