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Loans - Amortized cost basis of collateral dependent loans by class (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross $ 35,591,620 $ 35,064,971
Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 384,622 341,279
Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 348,264 295,844
Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 16,245 14,338
Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 54 105
Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 20,059 30,992
Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,105,759 959,280
Construction | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   12,368
Construction | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   12,368
Construction | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   0
Construction | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   0
Construction | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   0
Mortgages    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 7,883,726 7,695,917
Mortgages | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 72,735 86,416
Mortgages | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 72,735 86,416
Mortgages | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Mortgages | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Mortgages | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Mortgages | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Commercial | Commercial multi-family    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 2,384,480 2,415,620
Commercial | Commercial multi-family | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 10,009 1,339
Commercial | Commercial multi-family | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 10,009 1,339
Commercial | Commercial multi-family | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Commercial | Commercial multi-family | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Commercial | Commercial multi-family | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Commercial | Commercial multi-family | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Commercial | CRE non-owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 5,004,472 5,087,421
Commercial | CRE non-owner occupied | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 213,560 160,555
Commercial | CRE non-owner occupied | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 213,560 160,555
Commercial | CRE non-owner occupied | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Commercial | CRE non-owner occupied | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Commercial | CRE non-owner occupied | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Commercial | CRE non-owner occupied | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Commercial | CRE owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 3,143,817 3,080,635
Commercial | CRE owner occupied | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 44,837 29,725
Commercial | CRE owner occupied | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 44,837 29,725
Commercial | CRE owner occupied | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Commercial | CRE owner occupied | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Commercial | CRE owner occupied | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Commercial | CRE owner occupied | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Commercial | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 7,195,357 7,126,121
Commercial | Commercial and Industrial | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 23,406 31,895
Commercial | Commercial and Industrial | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 3,332 1,103
Commercial | Commercial and Industrial | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Commercial | Commercial and Industrial | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 53 105
Commercial | Commercial and Industrial | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Commercial | Commercial and Industrial | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 20,021 30,687
Consumer | Personal loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,879,619 1,945,247
Consumer | Personal loans | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 3,791 4,338
Consumer | Personal loans | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 3,791 4,338
Consumer | Personal loans | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Consumer | Personal loans | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Consumer | Personal loans | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Consumer | Personal loans | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Consumer | Auto Loan    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 3,773,292 3,660,780
Consumer | Auto Loan | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 14,577 12,965
Consumer | Auto Loan | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Consumer | Auto Loan | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 14,577 12,965
Consumer | Auto Loan | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Consumer | Auto Loan | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Consumer | Auto Loan | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Consumer | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 161,501 160,441
Consumer | Other | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 38 305
Consumer | Other | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Consumer | Other | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Consumer | Other | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Consumer | Other | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Consumer | Other | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 38 305
Leasing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,828,048 1,731,809
Leasing | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,669 1,373
Leasing | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Leasing | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,668 1,373
Leasing | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1 0
Leasing | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Leasing | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 25,143,394 24,510,923
Puerto Rico | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 349,476 329,604
Puerto Rico | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 316,243 284,674
Puerto Rico | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 16,245 14,338
Puerto Rico | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1 0
Puerto Rico | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Puerto Rico | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 16,987 30,592
Puerto Rico | Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 183,939 169,857
Puerto Rico | Construction | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   6,378
Puerto Rico | Construction | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   6,378
Puerto Rico | Construction | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   0
Puerto Rico | Construction | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   0
Puerto Rico | Construction | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   0
Puerto Rico | Mortgages    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 6,590,520 6,391,824
Puerto Rico | Mortgages | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 71,670 85,113
Puerto Rico | Mortgages | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 71,670 85,113
Puerto Rico | Mortgages | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Mortgages | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Mortgages | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Puerto Rico | Mortgages | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Commercial | Commercial multi-family    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 304,911 291,942
Puerto Rico | Commercial | Commercial multi-family | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,309 1,339
Puerto Rico | Commercial | Commercial multi-family | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,309 1,339
Puerto Rico | Commercial | Commercial multi-family | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Commercial | Commercial multi-family | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Commercial | Commercial multi-family | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Puerto Rico | Commercial | Commercial multi-family | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Commercial | CRE non-owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 2,979,627 3,005,254
Puerto Rico | Commercial | CRE non-owner occupied | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 213,560 160,555
Puerto Rico | Commercial | CRE non-owner occupied | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 213,560 160,555
Puerto Rico | Commercial | CRE non-owner occupied | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Commercial | CRE non-owner occupied | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Commercial | CRE non-owner occupied | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Puerto Rico | Commercial | CRE non-owner occupied | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Commercial | CRE owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,417,112 1,398,383
Puerto Rico | Commercial | CRE owner occupied | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 22,581 25,848
Puerto Rico | Commercial | CRE owner occupied | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 22,581 25,848
Puerto Rico | Commercial | CRE owner occupied | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Commercial | CRE owner occupied | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Commercial | CRE owner occupied | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Puerto Rico | Commercial | CRE owner occupied | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Commercial | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 5,002,784 4,796,226
Puerto Rico | Commercial | Commercial and Industrial | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 20,281 31,390
Puerto Rico | Commercial | Commercial and Industrial | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 3,332 1,103
Puerto Rico | Commercial | Commercial and Industrial | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Commercial | Commercial and Industrial | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Commercial | Commercial and Industrial | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Puerto Rico | Commercial | Commercial and Industrial | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 16,949 30,287
Puerto Rico | Consumer | Personal loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,744,873 1,776,310
Puerto Rico | Consumer | Personal loans | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 3,791 4,338
Puerto Rico | Consumer | Personal loans | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 3,791 4,338
Puerto Rico | Consumer | Personal loans | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Consumer | Personal loans | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Consumer | Personal loans | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Puerto Rico | Consumer | Personal loans | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Consumer | Auto Loan    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 3,773,292 3,660,780
Puerto Rico | Consumer | Auto Loan | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 14,577 12,965
Puerto Rico | Consumer | Auto Loan | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Consumer | Auto Loan | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 14,577 12,965
Puerto Rico | Consumer | Auto Loan | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Consumer | Auto Loan | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Puerto Rico | Consumer | Auto Loan | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Consumer | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 153,533 150,162
Puerto Rico | Consumer | Other | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 38 305
Puerto Rico | Consumer | Other | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Consumer | Other | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Consumer | Other | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Consumer | Other | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Puerto Rico | Consumer | Other | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 38 305
Puerto Rico | Leasing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,828,048 1,731,809
Puerto Rico | Leasing | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,669 1,373
Puerto Rico | Leasing | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Puerto Rico | Leasing | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,668 1,373
Puerto Rico | Leasing | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1 0
Puerto Rico | Leasing | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Puerto Rico | Leasing | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Popular U.S.    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 10,448,226 10,554,048
Popular U.S. | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 35,146 11,675
Popular U.S. | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 32,021 11,170
Popular U.S. | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Popular U.S. | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 53 105
Popular U.S. | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Popular U.S. | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 3,072 400
Popular U.S. | Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 921,820 789,423
Popular U.S. | Construction | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   5,990
Popular U.S. | Construction | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   5,990
Popular U.S. | Construction | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   0
Popular U.S. | Construction | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   0
Popular U.S. | Construction | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross   0
Popular U.S. | Mortgages    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,293,206 1,304,093
Popular U.S. | Mortgages | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,065 1,303
Popular U.S. | Mortgages | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,065 1,303
Popular U.S. | Mortgages | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Popular U.S. | Mortgages | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Popular U.S. | Mortgages | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Popular U.S. | Mortgages | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Popular U.S. | Commercial | Commercial multi-family    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 2,079,569 2,123,678
Popular U.S. | Commercial | Commercial multi-family | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 8,700  
Popular U.S. | Commercial | Commercial multi-family | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 8,700  
Popular U.S. | Commercial | Commercial multi-family | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Popular U.S. | Commercial | Commercial multi-family | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Popular U.S. | Commercial | Commercial multi-family | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Popular U.S. | Commercial | Commercial multi-family | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Popular U.S. | Commercial | CRE non-owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 2,024,845 2,082,167
Popular U.S. | Commercial | CRE non-owner occupied | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Popular U.S. | Commercial | CRE owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 1,726,705 1,682,252
Popular U.S. | Commercial | CRE owner occupied | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 22,256 3,877
Popular U.S. | Commercial | CRE owner occupied | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 22,256 3,877
Popular U.S. | Commercial | CRE owner occupied | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Popular U.S. | Commercial | CRE owner occupied | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Popular U.S. | Commercial | CRE owner occupied | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Popular U.S. | Commercial | CRE owner occupied | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Popular U.S. | Commercial | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 2,192,573 2,329,895
Popular U.S. | Commercial | Commercial and Industrial | Collateral assets    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 3,125 505
Popular U.S. | Commercial | Commercial and Industrial | Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Popular U.S. | Commercial | Commercial and Industrial | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0 0
Popular U.S. | Commercial | Commercial and Industrial | Equipment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 53 105
Popular U.S. | Commercial | Commercial and Industrial | Accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 0  
Popular U.S. | Commercial | Commercial and Industrial | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 3,072 400
Popular U.S. | Consumer | Personal loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross 134,746 168,937
Popular U.S. | Consumer | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes Receivable Gross $ 7,968 $ 10,279