Loans - Loans held-in-portfolio in past due status, non-performing status and accruing loans past-due 90 days or more by loan class (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	$ 33,030,922	$ 32,077,769
Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	355,272	363,706
Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	141,623	139,856
Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	658,831	791,055
Non-accrual loans	385,504	439,441
Accruing loans past-due 90 days or more	273,327	351,614
Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,155,726	1,294,617
Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	31,875,196	30,783,152
Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	819,903	757,984
Construction | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Construction | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	970	0
Construction | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	9,284	0
Non-accrual loans	9,284	0
Accruing loans past-due 90 days or more	0	0
Construction | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	10,254	0
Construction | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	809,649	757,984
Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	7,449,078	7,397,471
Mortgages | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	222,288	239,057
Mortgages | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	94,390	97,715
Mortgages | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	464,507	600,481
Non-accrual loans	208,796	262,879
Accruing loans past-due 90 days or more	255,711	337,602
Mortgages | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	781,185	937,253
Mortgages | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	6,667,893	6,460,218
Commercial | Commercial multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,331,499	2,321,713
Commercial | Commercial multi-family | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	6,915	2,602
Commercial | Commercial multi-family | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	179	0
Commercial | Commercial multi-family | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	602	242
Non-accrual loans	602	242
Accruing loans past-due 90 days or more	0	0
Commercial | Commercial multi-family | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	7,696	2,844
Commercial | Commercial multi-family | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,323,803	2,318,869
Commercial | CRE non-owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,744,256	4,499,670
Commercial | CRE non-owner occupied | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	809	1,425
Commercial | CRE non-owner occupied | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	512	428
Commercial | CRE non-owner occupied | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	23,061	25,116
Non-accrual loans	23,061	25,116
Accruing loans past-due 90 days or more	0	0
Commercial | CRE non-owner occupied | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	24,382	26,969
Commercial | CRE non-owner occupied | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,719,874	4,472,701
Commercial | CRE owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,041,398	3,078,549
Commercial | CRE owner occupied | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,047	729
Commercial | CRE owner occupied | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	700	245
Commercial | CRE owner occupied | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	40,927	29,085
Non-accrual loans	40,927	29,085
Accruing loans past-due 90 days or more	0	0
Commercial | CRE owner occupied | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	44,674	30,059
Commercial | CRE owner occupied | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,996,724	3,048,490
Commercial | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	6,251,147	5,839,200
Commercial | Commercial and Industrial | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	5,061	15,996
Commercial | Commercial and Industrial | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,466	3,146
Commercial | Commercial and Industrial | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	39,001	40,462
Non-accrual loans	35,736	38,596
Accruing loans past-due 90 days or more	3,265	1,866
Commercial | Commercial and Industrial | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	46,528	59,604
Commercial | Commercial and Industrial | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	6,204,619	5,779,596
Leasing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,661,523	1,585,739
Leasing | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	13,160	11,983
Leasing | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,811	3,563
Leasing | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,743	5,941
Non-accrual loans	4,743	5,941
Accruing loans past-due 90 days or more	0	0
Leasing | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	21,714	21,487
Leasing | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,639,809	1,564,252
Consumer | Credit card
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,057,389	1,041,870
Consumer | Credit card | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	9,506	7,106
Consumer | Credit card | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	6,311	5,049
Consumer | Credit card | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	14,185	11,910
Non-accrual loans	0	0
Accruing loans past-due 90 days or more	14,185	11,910
Consumer | Credit card | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	30,002	24,065
Consumer | Credit card | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,027,387	1,017,805
Consumer | Home equity lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	68,440	71,916
Consumer | Home equity lines of credit | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	464	413
Consumer | Home equity lines of credit | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	49	161
Consumer | Home equity lines of credit | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,252	4,110
Non-accrual loans	4,252	4,110
Accruing loans past-due 90 days or more	0	0
Consumer | Home equity lines of credit | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,765	4,684
Consumer | Home equity lines of credit | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	63,675	67,232
Consumer | Personal loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,896,594	1,823,579
Consumer | Personal loans | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	17,631	15,040
Consumer | Personal loans | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	13,385	10,219
Consumer | Personal loans | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	20,164	20,040
Non-accrual loans	20,164	20,040
Accruing loans past-due 90 days or more	0	0
Consumer | Personal loans | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	51,180	45,299
Consumer | Personal loans | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,845,414	1,778,280
Consumer | Auto Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,565,533	3,512,530
Consumer | Auto Loan | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	75,879	68,868
Consumer | Auto Loan | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	18,422	19,243
Consumer | Auto Loan | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	36,204	40,978
Non-accrual loans	36,204	40,978
Accruing loans past-due 90 days or more	0	0
Consumer | Auto Loan | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	130,505	129,089
Consumer | Auto Loan | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,435,028	3,383,441
Consumer | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	144,162	147,548
Consumer | Other | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	512	487
Consumer | Other | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	428	87
Consumer | Other | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,901	12,690
Non-accrual loans	1,735	12,454
Accruing loans past-due 90 days or more	166	236
Consumer | Other | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,841	13,264
Consumer | Other | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	141,321	134,284
Puerto Rico
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	23,120,284	22,546,905
Puerto Rico | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	342,902	329,733
Puerto Rico | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	132,522	130,189
Puerto Rico | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	625,489	753,257
Non-accrual loans	352,339	402,009
Accruing loans past-due 90 days or more	273,150	351,248
Puerto Rico | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,100,913	1,213,179
Puerto Rico | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	22,019,371	21,333,726
Puerto Rico | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	173,735	147,041
Puerto Rico | Construction | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Puerto Rico | Construction | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	970	0
Puerto Rico | Construction | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	9,284	0
Non-accrual loans	9,284	0
Accruing loans past-due 90 days or more	0	0
Puerto Rico | Construction | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	10,254	0
Puerto Rico | Construction | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	163,481	147,041
Puerto Rico | Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	6,168,288	6,110,279
Puerto Rico | Mortgages | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	221,187	222,926
Puerto Rico | Mortgages | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	88,955	91,881
Puerto Rico | Mortgages | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	449,930	579,993
Non-accrual loans	194,219	242,391
Accruing loans past-due 90 days or more	255,711	337,602
Puerto Rico | Mortgages | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	760,072	894,800
Puerto Rico | Mortgages | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	5,408,216	5,215,479
Puerto Rico | Commercial | Commercial multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	296,877	281,373
Puerto Rico | Commercial | Commercial multi-family | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,778	425
Puerto Rico | Commercial | Commercial multi-family | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	179	0
Puerto Rico | Commercial | Commercial multi-family | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	184	242
Non-accrual loans	184	242
Accruing loans past-due 90 days or more	0	0
Puerto Rico | Commercial | Commercial multi-family | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,141	667
Puerto Rico | Commercial | Commercial multi-family | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	292,736	280,706
Puerto Rico | Commercial | CRE non-owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,906,247	2,757,327
Puerto Rico | Commercial | CRE non-owner occupied | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	177	941
Puerto Rico | Commercial | CRE non-owner occupied | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	512	428
Puerto Rico | Commercial | CRE non-owner occupied | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	22,942	23,662
Non-accrual loans	22,942	23,662
Accruing loans past-due 90 days or more	0	0
Puerto Rico | Commercial | CRE non-owner occupied | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	23,631	25,031
Puerto Rico | Commercial | CRE non-owner occupied | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,882,616	2,732,296
Puerto Rico | Commercial | CRE owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,428,058	1,588,056
Puerto Rico | Commercial | CRE owner occupied | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,241	729
Puerto Rico | Commercial | CRE owner occupied | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	700	245
Puerto Rico | Commercial | CRE owner occupied | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	35,832	23,990
Non-accrual loans	35,832	23,990
Accruing loans past-due 90 days or more	0	0
Puerto Rico | Commercial | CRE owner occupied | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	37,773	24,964
Puerto Rico | Commercial | CRE owner occupied | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,390,285	1,563,092
Puerto Rico | Commercial | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,038,823	3,796,508
Puerto Rico | Commercial | Commercial and Industrial | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,597	3,036
Puerto Rico | Commercial | Commercial and Industrial | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	728	941
Puerto Rico | Commercial | Commercial and Industrial | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	32,846	35,777
Non-accrual loans	29,758	34,277
Accruing loans past-due 90 days or more	3,088	1,500
Puerto Rico | Commercial | Commercial and Industrial | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	36,171	39,754
Puerto Rico | Commercial | Commercial and Industrial | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,002,652	3,756,754
Puerto Rico | Leasing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,661,523	1,585,739
Puerto Rico | Leasing | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	13,160	11,983
Puerto Rico | Leasing | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,811	3,563
Puerto Rico | Leasing | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,743	5,941
Non-accrual loans	4,743	5,941
Accruing loans past-due 90 days or more	0	0
Puerto Rico | Leasing | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	21,714	21,487
Puerto Rico | Leasing | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,639,809	1,564,252
Puerto Rico | Consumer | Credit card
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,057,372	1,041,831
Puerto Rico | Consumer | Credit card | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	9,506	7,106
Puerto Rico | Consumer | Credit card | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	6,311	5,049
Puerto Rico | Consumer | Credit card | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	14,185	11,910
Non-accrual loans	0	0
Accruing loans past-due 90 days or more	14,185	11,910
Puerto Rico | Consumer | Credit card | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	30,002	24,065
Puerto Rico | Consumer | Credit card | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,027,370	1,017,766
Puerto Rico | Consumer | Home equity lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,570	2,954
Puerto Rico | Consumer | Home equity lines of credit | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Puerto Rico | Consumer | Home equity lines of credit | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Puerto Rico | Consumer | Home equity lines of credit | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Non-accrual loans	0	0
Accruing loans past-due 90 days or more	0	0
Puerto Rico | Consumer | Home equity lines of credit | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Puerto Rico | Consumer | Home equity lines of credit | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,570	2,954
Puerto Rico | Consumer | Personal loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,685,966	1,585,687
Puerto Rico | Consumer | Personal loans | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	14,865	13,232
Puerto Rico | Consumer | Personal loans | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	11,660	8,752
Puerto Rico | Consumer | Personal loans | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	17,438	18,082
Non-accrual loans	17,438	18,082
Accruing loans past-due 90 days or more	0	0
Puerto Rico | Consumer | Personal loans | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	43,963	40,066
Puerto Rico | Consumer | Personal loans | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,642,003	1,545,621
Puerto Rico | Consumer | Auto Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,565,533	3,512,530
Puerto Rico | Consumer | Auto Loan | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	75,879	68,868
Puerto Rico | Consumer | Auto Loan | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	18,422	19,243
Puerto Rico | Consumer | Auto Loan | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	36,204	40,978
Non-accrual loans	36,204	40,978
Accruing loans past-due 90 days or more	0	0
Puerto Rico | Consumer | Auto Loan | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	130,505	129,089
Puerto Rico | Consumer | Auto Loan | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,435,028	3,383,441
Puerto Rico | Consumer | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	135,292	137,580
Puerto Rico | Consumer | Other | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	512	487
Puerto Rico | Consumer | Other | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	274	87
Puerto Rico | Consumer | Other | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,901	12,682
Non-accrual loans	1,735	12,446
Accruing loans past-due 90 days or more	166	236
Puerto Rico | Consumer | Other | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,687	13,256
Puerto Rico | Consumer | Other | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	132,605	124,324
Popular U.S.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	9,910,638	9,530,864
Popular U.S. | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	12,370	33,973
Popular U.S. | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	9,101	9,667
Popular U.S. | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	33,342	37,798
Non-accrual loans	33,165	37,432
Accruing loans past-due 90 days or more	177	366
Popular U.S. | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	54,813	81,438
Popular U.S. | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	9,855,825	9,449,426
Popular U.S. | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	646,168	610,943
Popular U.S. | Construction | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Popular U.S. | Construction | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Popular U.S. | Construction | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Non-accrual loans	0	0
Accruing loans past-due 90 days or more	0	0
Popular U.S. | Construction | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Popular U.S. | Construction | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	646,168	610,943
Popular U.S. | Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,280,790	1,287,192
Popular U.S. | Mortgages | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,101	16,131
Popular U.S. | Mortgages | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	5,435	5,834
Popular U.S. | Mortgages | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	14,577	20,488
Non-accrual loans	14,577	20,488
Accruing loans past-due 90 days or more	0	0
Popular U.S. | Mortgages | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	21,113	42,453
Popular U.S. | Mortgages | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,259,677	1,244,739
Popular U.S. | Commercial | Commercial multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,034,622	2,040,340
Popular U.S. | Commercial | Commercial multi-family | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,137	2,177
Popular U.S. | Commercial | Commercial multi-family | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Popular U.S. | Commercial | Commercial multi-family | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	418	0
Non-accrual loans	418	0
Accruing loans past-due 90 days or more	0	0
Popular U.S. | Commercial | Commercial multi-family | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,555	2,177
Popular U.S. | Commercial | Commercial multi-family | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,031,067	2,038,163
Popular U.S. | Commercial | CRE non-owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,838,009	1,742,343
Popular U.S. | Commercial | CRE non-owner occupied | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	632	484
Popular U.S. | Commercial | CRE non-owner occupied | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Popular U.S. | Commercial | CRE non-owner occupied | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	119	1,454
Non-accrual loans	119	1,454
Accruing loans past-due 90 days or more	0	0
Popular U.S. | Commercial | CRE non-owner occupied | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	751	1,938
Popular U.S. | Commercial | CRE non-owner occupied | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,837,258	1,740,405
Popular U.S. | Commercial | CRE owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,613,340	1,490,493
Popular U.S. | Commercial | CRE owner occupied | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,806	0
Popular U.S. | Commercial | CRE owner occupied | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Popular U.S. | Commercial | CRE owner occupied | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	5,095	5,095
Non-accrual loans	5,095	5,095
Accruing loans past-due 90 days or more	0	0
Popular U.S. | Commercial | CRE owner occupied | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	6,901	5,095
Popular U.S. | Commercial | CRE owner occupied | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,606,439	1,485,398
Popular U.S. | Commercial | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,212,324	2,042,692
Popular U.S. | Commercial | Commercial and Industrial | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,464	12,960
Popular U.S. | Commercial | Commercial and Industrial | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,738	2,205
Popular U.S. | Commercial | Commercial and Industrial | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	6,155	4,685
Non-accrual loans	5,978	4,319
Accruing loans past-due 90 days or more	177	366
Popular U.S. | Commercial | Commercial and Industrial | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	10,357	19,850
Popular U.S. | Commercial | Commercial and Industrial | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,201,967	2,022,842
Popular U.S. | Consumer | Credit card
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	17	39
Popular U.S. | Consumer | Credit card | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Popular U.S. | Consumer | Credit card | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Popular U.S. | Consumer | Credit card | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Non-accrual loans	0	0
Accruing loans past-due 90 days or more	0	0
Popular U.S. | Consumer | Credit card | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Popular U.S. | Consumer | Credit card | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	17	39
Popular U.S. | Consumer | Home equity lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	65,870	68,962
Popular U.S. | Consumer | Home equity lines of credit | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	464	413
Popular U.S. | Consumer | Home equity lines of credit | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	49	161
Popular U.S. | Consumer | Home equity lines of credit | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,252	4,110
Non-accrual loans	4,252	4,110
Accruing loans past-due 90 days or more	0	0
Popular U.S. | Consumer | Home equity lines of credit | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,765	4,684
Popular U.S. | Consumer | Home equity lines of credit | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	61,105	64,278
Popular U.S. | Consumer | Personal loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	210,628	237,892
Popular U.S. | Consumer | Personal loans | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,766	1,808
Popular U.S. | Consumer | Personal loans | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,725	1,467
Popular U.S. | Consumer | Personal loans | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,726	1,958
Non-accrual loans	2,726	1,958
Accruing loans past-due 90 days or more	0	0
Popular U.S. | Consumer | Personal loans | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	7,217	5,233
Popular U.S. | Consumer | Personal loans | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	203,411	232,659
Popular U.S. | Consumer | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	8,870	9,968
Popular U.S. | Consumer | Other | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Popular U.S. | Consumer | Other | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	154	0
Popular U.S. | Consumer | Other | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	8
Non-accrual loans	0	8
Accruing loans past-due 90 days or more	0	0
Popular U.S. | Consumer | Other | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	154	8
Popular U.S. | Consumer | Other | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	$ 8,716	$ 9,960