Loans - Amortized cost basis of collateral dependent loans by class (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	$ 36,194,967	$ 35,064,971
Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	350,438	341,279
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	321,649	295,844
Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	16,540	14,338
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	36	105
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	12,213	30,992
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,113,307	959,280
Construction | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	768	12,368
Construction | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	768	12,368
Construction | Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	0
Construction | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	0
Construction | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	0
Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	7,993,348	7,695,917
Mortgages | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	76,903	86,416
Mortgages | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	76,903	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 | 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	2,405,302	2,415,620
Commercial | Commercial multi-family | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	20,563	1,339
Commercial | Commercial multi-family | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	20,563	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 | 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	5,185,381	5,087,421
Commercial | CRE non-owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	170,219	160,555
Commercial | CRE non-owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	170,219	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 | 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	3,092,393	3,080,635
Commercial | CRE owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	45,931	29,725
Commercial | CRE owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	45,931	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 | 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	7,400,553	7,126,121
Commercial | Commercial and Industrial | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	15,516	31,895
Commercial | Commercial and Industrial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,304	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	35	105
Commercial | Commercial and Industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	12,177	30,687
Consumer | Personal loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,873,175	1,945,247
Consumer | Personal loans | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,961	4,338
Consumer | Personal loans | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,961	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 | 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	3,818,607	3,660,780
Consumer | Auto Loan | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	15,173	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	15,173	12,965
Consumer | Auto Loan | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	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	169,265	160,441
Consumer | Other | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	36	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 | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	36	305
Leasing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,887,052	1,731,809
Leasing | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,368	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	1,367	1,373
Leasing | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1	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	25,725,474	24,510,923
Puerto Rico | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	306,024	329,604
Puerto Rico | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	277,270	284,674
Puerto Rico | Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	16,540	14,338
Puerto Rico | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1	0
Puerto Rico | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	12,213	30,592
Puerto Rico | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	190,343	169,857
Puerto Rico | Construction | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	768	6,378
Puerto Rico | Construction | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	768	6,378
Puerto Rico | Construction | Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	0
Puerto Rico | Construction | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	0
Puerto Rico | Construction | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	0
Puerto Rico | Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	6,695,417	6,391,824
Puerto Rico | Mortgages | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	75,374	85,113
Puerto Rico | Mortgages | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	75,374	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 | 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	305,534	291,942
Puerto Rico | Commercial | Commercial multi-family | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,293	1,339
Puerto Rico | Commercial | Commercial multi-family | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,293	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 | 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	3,148,255	3,005,254
Puerto Rico | Commercial | CRE non-owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	168,887	160,555
Puerto Rico | Commercial | CRE non-owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	168,887	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 | 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	1,403,850	1,398,383
Puerto Rico | Commercial | CRE owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	23,683	25,848
Puerto Rico | Commercial | CRE owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	23,683	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 | 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	5,176,125	4,796,226
Puerto Rico | Commercial | Commercial and Industrial | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	15,481	31,390
Puerto Rico | Commercial | Commercial and Industrial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,304	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 | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	12,177	30,287
Puerto Rico | Consumer | Personal loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,754,081	1,776,310
Puerto Rico | Consumer | Personal loans | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,961	4,338
Puerto Rico | Consumer | Personal loans | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,961	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 | 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	3,818,607	3,660,780
Puerto Rico | Consumer | Auto Loan | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	15,173	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	15,173	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 | 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	157,190	150,162
Puerto Rico | Consumer | Other | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	36	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 | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	36	305
Puerto Rico | Leasing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,887,052	1,731,809
Puerto Rico | Leasing | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,368	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	1,367	1,373
Puerto Rico | Leasing | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1	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	10,469,493	10,554,048
Popular U.S. | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	44,414	11,675
Popular U.S. | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	44,379	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	35	105
Popular U.S. | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	400
Popular U.S. | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	922,964	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	1,297,931	1,304,093
Popular U.S. | Mortgages | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,529	1,303
Popular U.S. | Mortgages | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,529	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 | 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	2,099,768	2,123,678
Popular U.S. | Commercial | Commercial multi-family | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	19,270
Popular U.S. | Commercial | Commercial multi-family | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	19,270
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 | 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	2,037,126	2,082,167
Popular U.S. | Commercial | CRE non-owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,332
Popular U.S. | Commercial | CRE non-owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,332
Popular U.S. | Commercial | CRE non-owner occupied | Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0
Popular U.S. | Commercial | CRE non-owner occupied | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0
Popular U.S. | Commercial | CRE non-owner occupied | Other
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	1,688,543	1,682,252
Popular U.S. | Commercial | CRE owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	22,248	3,877
Popular U.S. | Commercial | CRE owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	22,248	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 | 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	2,224,428	2,329,895
Popular U.S. | Commercial | Commercial and Industrial | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	35	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	35	105
Popular U.S. | Commercial | Commercial and Industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	400
Popular U.S. | Consumer | Personal loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	119,094	168,937
Popular U.S. | Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	$ 12,075	$ 10,279