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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, 2025	Dec. 31, 2024
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	$ 38,185,178	$ 37,107,652
Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	464,573	496,858
Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	179,675	198,641
Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	518,019	593,220
Non-accrual loans	311,625	350,780
Accruing loans past-due 90 days or more	206,394	242,440
Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,162,267	1,288,719
Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	37,022,911	35,818,933
Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,468,201	1,263,792
Construction | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,720	1,039
Construction | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
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
Construction | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,720	1,039
Construction | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,464,481	1,262,753
Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	8,444,427	8,114,183
Mortgages | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	263,202	280,370
Mortgages | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	112,859	122,111
Mortgages | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	352,192	395,649
Non-accrual loans	175,516	188,332
Accruing loans past-due 90 days or more	176,676	207,317
Mortgages | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	728,253	798,130
Mortgages | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	7,716,174	7,316,053
Commercial | Commercial multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,520,789	2,399,620
Commercial | Commercial multi-family | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	6,337	1,491
Commercial | Commercial multi-family | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,675	5,556
Commercial | Commercial multi-family | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	10,925	8,779
Non-accrual loans	10,925	8,779
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	21,937	15,826
Commercial | Commercial multi-family | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,498,852	2,383,794
Commercial | CRE non-owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	5,521,374	5,363,235
Commercial | CRE non-owner occupied | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,616	9,895
Commercial | CRE non-owner occupied | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,679	586
Commercial | CRE non-owner occupied | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	13,977	14,444
Non-accrual loans	13,977	14,444
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	17,272	24,925
Commercial | CRE non-owner occupied | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	5,504,102	5,338,310
Commercial | CRE owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,003,855	3,157,746
Commercial | CRE owner occupied | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	11,764	11,054
Commercial | CRE owner occupied | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,098	808
Commercial | CRE owner occupied | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	27,551	30,449
Non-accrual loans	27,551	30,449
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	41,413	42,311
Commercial | CRE owner occupied | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,962,442	3,115,435
Commercial | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	8,043,752	7,741,562
Commercial | Commercial and Industrial | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	13,892	16,074
Commercial | Commercial and Industrial | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	7,644	8,035
Commercial | Commercial and Industrial | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	15,677	25,833
Non-accrual loans	11,424	21,083
Accruing loans past-due 90 days or more	4,253	4,750
Commercial | Commercial and Industrial | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	37,213	49,942
Commercial | Commercial and Industrial | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	8,006,539	7,691,620
Leasing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,983,068	1,925,405
Leasing | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	23,109	23,991
Leasing | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	5,629	6,062
Leasing | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	7,976	9,588
Non-accrual loans	7,976	9,588
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	36,714	39,641
Leasing | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,946,354	1,885,764
Consumer | Credit card
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,215,293	1,218,079
Consumer | Credit card | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	14,184	17,399
Consumer | Credit card | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	9,360	11,719
Consumer | Credit card | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	25,201	29,960
Non-accrual loans	0	0
Accruing loans past-due 90 days or more	25,201	29,960
Consumer | Credit card | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	48,745	59,078
Consumer | Credit card | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,166,548	1,159,001
Consumer | Home equity lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	77,479	73,571
Consumer | Home equity lines of credit | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	845	546
Consumer | Home equity lines of credit | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	717	1,115
Consumer | Home equity lines of credit | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,120	3,393
Non-accrual loans	3,120	3,393
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	4,682	5,054
Consumer | Home equity lines of credit | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	72,797	68,517
Consumer | Personal loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,876,463	1,855,244
Consumer | Personal loans | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	20,067	21,311
Consumer | Personal loans | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	12,449	14,514
Consumer | Personal loans | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	18,593	22,010
Non-accrual loans	18,593	22,010
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	51,109	57,835
Consumer | Personal loans | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,825,354	1,797,409
Consumer | Auto Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,861,702	3,823,437
Consumer | Auto Loan | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	102,643	111,358
Consumer | Auto Loan | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	22,404	27,858
Consumer | Auto Loan | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	40,595	51,792
Non-accrual loans	40,595	51,792
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	165,642	191,008
Consumer | Auto Loan | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,696,060	3,632,429
Consumer | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	168,775	171,778
Consumer | Other | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,194	2,330
Consumer | Other | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	161	277
Consumer | Other | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,212	1,323
Non-accrual loans	1,948	910
Accruing loans past-due 90 days or more	264	413
Consumer | Other | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	5,567	3,930
Consumer | Other | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	163,208	167,848
Puerto Rico
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	26,804,983	26,179,021
Puerto Rico | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	439,897	458,730
Puerto Rico | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	165,226	179,963
Puerto Rico | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	463,853	534,341
Non-accrual loans	257,648	292,091
Accruing loans past-due 90 days or more	206,205	242,250
Puerto Rico | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,068,976	1,173,034
Puerto Rico | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	25,736,007	25,005,987
Puerto Rico | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	253,299	212,290
Puerto Rico | Construction | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,720	1,039
Puerto Rico | Construction | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	0
Puerto Rico | 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
Puerto Rico | Construction | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,720	1,039
Puerto Rico | Construction | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	249,579	211,251
Puerto Rico | Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	7,104,006	6,809,881
Puerto Rico | Mortgages | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	262,525	262,222
Puerto Rico | Mortgages | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	109,530	116,694
Puerto Rico | Mortgages | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	324,140	365,759
Non-accrual loans	147,464	158,442
Accruing loans past-due 90 days or more	176,676	207,317
Puerto Rico | Mortgages | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	696,195	744,675
Puerto Rico | Mortgages | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	6,407,811	6,065,206
Puerto Rico | Commercial | Commercial multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	306,363	308,001
Puerto Rico | Commercial | Commercial multi-family | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	6,337	1,491
Puerto Rico | Commercial | Commercial multi-family | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	0	113
Puerto Rico | Commercial | Commercial multi-family | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	174	79
Non-accrual loans	174	79
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	6,511	1,683
Puerto Rico | Commercial | Commercial multi-family | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	299,852	306,318
Puerto Rico | Commercial | CRE non-owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,329,984	3,246,503
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	113	3,103
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	1,679	586
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	6,084	6,429
Non-accrual loans	6,084	6,429
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	7,876	10,118
Puerto Rico | Commercial | CRE non-owner occupied | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,322,108	3,236,385
Puerto Rico | Commercial | CRE owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,202,106	1,375,911
Puerto Rico | Commercial | CRE owner occupied | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,087	11,054
Puerto Rico | Commercial | CRE owner occupied | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,098	808
Puerto Rico | Commercial | CRE owner occupied | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	27,320	25,258
Non-accrual loans	27,320	25,258
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	30,505	37,120
Puerto Rico | Commercial | CRE owner occupied | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,171,601	1,338,791
Puerto Rico | Commercial | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	5,594,724	5,346,894
Puerto Rico | Commercial | Commercial and Industrial | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,657	5,738
Puerto Rico | Commercial | Commercial and Industrial | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,449	2,712
Puerto Rico | Commercial | Commercial and Industrial | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	12,652	23,895
Non-accrual loans	8,588	19,335
Accruing loans past-due 90 days or more	4,064	4,560
Puerto Rico | Commercial | Commercial and Industrial | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	19,758	32,345
Puerto Rico | Commercial | Commercial and Industrial | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	5,574,966	5,314,549
Puerto Rico | Leasing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,983,068	1,925,405
Puerto Rico | Leasing | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	23,109	23,991
Puerto Rico | Leasing | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	5,629	6,062
Puerto Rico | Leasing | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	7,976	9,588
Non-accrual loans	7,976	9,588
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	36,714	39,641
Puerto Rico | Leasing | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,946,354	1,885,764
Puerto Rico | Consumer | Credit card
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,215,290	1,218,053
Puerto Rico | Consumer | Credit card | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	14,184	17,399
Puerto Rico | Consumer | Credit card | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	9,360	11,719
Puerto Rico | Consumer | Credit card | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	25,201	29,960
Non-accrual loans	0	0
Accruing loans past-due 90 days or more	25,201	29,960
Puerto Rico | Consumer | Credit card | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	48,745	59,078
Puerto Rico | Consumer | Credit card | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,166,545	1,158,975
Puerto Rico | Consumer | Home equity lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,809	2,040
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	16
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	129
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	145
Puerto Rico | Consumer | Home equity lines of credit | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,809	1,895
Puerto Rico | Consumer | Personal loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,792,210	1,750,377
Puerto Rico | Consumer | Personal loans | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	19,022	19,503
Puerto Rico | Consumer | Personal loans | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	11,917	13,005
Puerto Rico | Consumer | Personal loans | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	17,499	20,269
Non-accrual loans	17,499	20,269
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	48,438	52,777
Puerto Rico | Consumer | Personal loans | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,743,772	1,697,600
Puerto Rico | Consumer | Auto Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,861,702	3,823,437
Puerto Rico | Consumer | Auto Loan | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	102,643	111,358
Puerto Rico | Consumer | Auto Loan | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	22,404	27,858
Puerto Rico | Consumer | Auto Loan | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	40,595	51,792
Non-accrual loans	40,595	51,792
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	165,642	191,008
Puerto Rico | Consumer | Auto Loan | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,696,060	3,632,429
Puerto Rico | Consumer | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	160,422	160,229
Puerto Rico | Consumer | Other | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,500	1,816
Puerto Rico | Consumer | Other | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	160	277
Puerto Rico | Consumer | Other | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,212	1,312
Non-accrual loans	1,948	899
Accruing loans past-due 90 days or more	264	413
Puerto Rico | Consumer | Other | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	4,872	3,405
Puerto Rico | Consumer | Other | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	155,550	156,824
Popular U.S.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	11,380,195	10,928,631
Popular U.S. | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	24,676	38,128
Popular U.S. | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	14,449	18,678
Popular U.S. | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	54,166	58,879
Non-accrual loans	53,977	58,689
Accruing loans past-due 90 days or more	189	190
Popular U.S. | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	93,291	115,685
Popular U.S. | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	11,286,904	10,812,946
Popular U.S. | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,214,902	1,051,502
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	1,214,902	1,051,502
Popular U.S. | Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,340,421	1,304,302
Popular U.S. | Mortgages | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	677	18,148
Popular U.S. | Mortgages | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3,329	5,417
Popular U.S. | Mortgages | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	28,052	29,890
Non-accrual loans	28,052	29,890
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	32,058	53,455
Popular U.S. | Mortgages | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,308,363	1,250,847
Popular U.S. | Commercial | Commercial multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,214,426	2,091,619
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	0	0
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	4,675	5,443
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	10,751	8,700
Non-accrual loans	10,751	8,700
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	15,426	14,143
Popular U.S. | Commercial | Commercial multi-family | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,199,000	2,077,476
Popular U.S. | Commercial | CRE non-owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,191,390	2,116,732
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	1,503	6,792
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	7,893	8,015
Non-accrual loans	7,893	8,015
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	9,396	14,807
Popular U.S. | Commercial | CRE non-owner occupied | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,181,994	2,101,925
Popular U.S. | Commercial | CRE owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,801,749	1,781,835
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	10,677	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	231	5,191
Non-accrual loans	231	5,191
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	10,908	5,191
Popular U.S. | Commercial | CRE owner occupied | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,790,841	1,776,644
Popular U.S. | Commercial | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,449,028	2,394,668
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	9,235	10,336
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	5,195	5,323
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	3,025	1,938
Non-accrual loans	2,836	1,748
Accruing loans past-due 90 days or more	189	190
Popular U.S. | Commercial | Commercial and Industrial | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	17,455	17,597
Popular U.S. | Commercial | Commercial and Industrial | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	2,431,573	2,377,071
Popular U.S. | Consumer | Credit card
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	3	26
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	3	26
Popular U.S. | Consumer | Home equity lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	75,670	71,531
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	845	530
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	717	986
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	3,120	3,393
Non-accrual loans	3,120	3,393
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	4,682	4,909
Popular U.S. | Consumer | Home equity lines of credit | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	70,988	66,622
Popular U.S. | Consumer | Personal loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	84,253	104,867
Popular U.S. | Consumer | Personal loans | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,045	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	532	1,509
Popular U.S. | Consumer | Personal loans | Past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1,094	1,741
Non-accrual loans	1,094	1,741
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	2,671	5,058
Popular U.S. | Consumer | Personal loans | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	81,582	99,809
Popular U.S. | Consumer | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	8,353	11,549
Popular U.S. | Consumer | Other | Past Due 30 To 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	694	514
Popular U.S. | Consumer | Other | Past Due 60 To 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	1	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	11
Non-accrual loans	0	11
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	695	525
Popular U.S. | Consumer | Other | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held in portfolio	$ 7,658	$ 11,024

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