Loans - Amortized cost basis of collateral dependent loans by class (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	$ 35,118,738	$ 35,064,971
Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	327,865	341,279
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	284,163	295,844
Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	15,167	14,338
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	70	105
Accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	2,172
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	26,293	30,992
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,009,303	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	7,783,662	7,695,917
Mortgages | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	81,527	86,416
Mortgages | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	81,527	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	2,384,635	2,415,620
Commercial | Commercial multi-family | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	10,025	1,339
Commercial | Commercial multi-family | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	10,025	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	5,057,059	5,087,421
Commercial | CRE non-owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	161,056	160,555
Commercial | CRE non-owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	161,056	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	3,117,844	3,080,635
Commercial | CRE owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	26,717	29,725
Commercial | CRE owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	26,717	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	7,025,483	7,126,121
Commercial | Commercial and Industrial | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	29,362	31,895
Commercial | Commercial and Industrial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,130	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	70	105
Commercial | Commercial and Industrial | Accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	2,172
Commercial | Commercial and Industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	25,990	30,687
Consumer | Personal loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,897,010	1,945,247
Consumer | Personal loans | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,708	4,338
Consumer | Personal loans | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,708	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	3,706,854	3,660,780
Consumer | Auto Loan | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	13,910	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	13,910	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	162,605	160,441
Consumer | Other | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	303	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	303	305
Leasing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,765,413	1,731,809
Leasing | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,257	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	1,257	1,373
Leasing | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	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	24,634,769	24,510,923
Puerto Rico | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	310,537	329,604
Puerto Rico | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	269,202	284,674
Puerto Rico | Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	15,167	14,338
Puerto Rico | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	0
Puerto Rico | Accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	2,172
Puerto Rico | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	23,996	30,592
Puerto Rico | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	162,724	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	6,483,551	6,391,824
Puerto Rico | Mortgages | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	80,487	85,113
Puerto Rico | Mortgages | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	80,487	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	303,651	291,942
Puerto Rico | Commercial | Commercial multi-family | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,325	1,339
Puerto Rico | Commercial | Commercial multi-family | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,325	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	2,996,485	3,005,254
Puerto Rico | Commercial | CRE non-owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	159,712	160,555
Puerto Rico | Commercial | CRE non-owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	159,712	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	1,426,092	1,398,383
Puerto Rico | Commercial | CRE owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	22,840	25,848
Puerto Rico | Commercial | CRE owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	22,840	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	4,745,123	4,796,226
Puerto Rico | Commercial | Commercial and Industrial | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	26,995	31,390
Puerto Rico | Commercial | Commercial and Industrial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,130	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	2,172
Puerto Rico | Commercial | Commercial and Industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	23,693	30,287
Puerto Rico | Consumer | Personal loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,746,493	1,776,310
Puerto Rico | Consumer | Personal loans | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,708	4,338
Puerto Rico | Consumer | Personal loans | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,708	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	3,706,854	3,660,780
Puerto Rico | Consumer | Auto Loan | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	13,910	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	13,910	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	153,678	150,162
Puerto Rico | Consumer | Other | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	303	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	303	305
Puerto Rico | Leasing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,765,413	1,731,809
Puerto Rico | Leasing | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,257	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	1,257	1,373
Puerto Rico | Leasing | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	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	10,483,969	10,554,048
Popular U.S. | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	17,328	11,675
Popular U.S. | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	14,961	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	70	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	2,297	400
Popular U.S. | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	846,579	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	1,300,111	1,304,093
Popular U.S. | Mortgages | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,040	1,303
Popular U.S. | Mortgages | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,040	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	2,080,984	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	2,060,574	2,082,167
Popular U.S. | Commercial | CRE non-owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,344
Popular U.S. | Commercial | CRE non-owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,344
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 | Accounts receivable
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	1,691,752	1,682,252
Popular U.S. | Commercial | CRE owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,877	3,877
Popular U.S. | Commercial | CRE owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,877	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	2,280,360	2,329,895
Popular U.S. | Commercial | Commercial and Industrial | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	2,367	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	70	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	2,297	400
Popular U.S. | Consumer | Personal loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	150,517	168,937
Popular U.S. | Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	$ 8,927	$ 10,279