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Loans - Amortized cost basis of collateral dependent loans by class (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	$ 38,687,158	$ 37,107,652
Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	337,611	313,220
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	310,381	283,219
Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	18,299	17,219
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	4,404	19
Accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,383
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,144	12,763
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,604,612	1,263,792
Construction | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross		576
Construction | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross		576
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	8,558,408	8,114,183
Mortgages | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	72,198	79,340
Mortgages | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	72,198	79,340
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	2,489,589	2,399,620
Commercial | Commercial multi-family | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	15,136	15,795
Commercial | Commercial multi-family | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	15,136	15,795
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	5,462,580	5,363,235
Commercial | CRE non-owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	193,854	153,090
Commercial | CRE non-owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	193,854	153,090
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	3,090,724	3,157,746
Commercial | CRE owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	23,060	28,317
Commercial | CRE owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	23,060	28,317
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	8,245,639	7,741,562
Commercial | Commercial and Industrial | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	10,977	15,519
Commercial | Commercial and Industrial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	2,409	2,754
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	4,404	18
Commercial | Commercial and Industrial | Accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,383
Commercial | Commercial and Industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	2,781	12,747
Consumer | Personal loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,900,325	1,855,244
Consumer | Personal loans | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,724	3,347
Consumer | Personal loans | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,724	3,347
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	3,850,953	3,823,437
Consumer | Auto Loan | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	16,694	15,782
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	16,694	15,782
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	181,220	171,778
Consumer | Other | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	371	16
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	8	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	363	16
Leasing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,998,651	1,925,405
Leasing | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,597	1,438
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	1,597	1,437
Leasing | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	1
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	27,161,791	26,179,021
Puerto Rico | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	256,400	284,029
Puerto Rico | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	229,170	255,200
Puerto Rico | Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	18,299	17,219
Puerto Rico | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	4,404	1
Puerto Rico | Accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,383
Puerto Rico | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,144	11,609
Puerto Rico | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	303,953	212,290
Puerto Rico | Construction | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross		576
Puerto Rico | Construction | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross		576
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	7,233,106	6,809,881
Puerto Rico | Mortgages | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	70,547	77,910
Puerto Rico | Mortgages | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	70,547	77,910
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	302,366	308,001
Puerto Rico | Commercial | Commercial multi-family | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,221	1,278
Puerto Rico | Commercial | Commercial multi-family | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,221	1,278
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	3,302,745	3,246,503
Puerto Rico | Commercial | CRE non-owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	128,209	145,974
Puerto Rico | Commercial | CRE non-owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	128,209	145,974
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	1,195,284	1,375,911
Puerto Rico | Commercial | CRE owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	23,060	23,361
Puerto Rico | Commercial | CRE owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	23,060	23,361
Puerto Rico | Commercial | CRE owner occupied | Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	0
Puerto Rico | Commercial | CRE owner occupied | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	0
Puerto Rico | Commercial | CRE owner occupied | Accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0
Puerto Rico | Commercial | CRE owner occupied | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	0
Puerto Rico | Commercial | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	5,751,998	5,346,894
Puerto Rico | Commercial | Commercial and Industrial | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	10,977	14,347
Puerto Rico | Commercial | Commercial and Industrial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	2,409	2,754
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	4,404	0
Puerto Rico | Commercial | Commercial and Industrial | Accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,383
Puerto Rico | Commercial | Commercial and Industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	2,781	11,593
Puerto Rico | Consumer | Personal loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,823,148	1,750,377
Puerto Rico | Consumer | Personal loans | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,724	3,347
Puerto Rico | Consumer | Personal loans | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	3,724	3,347
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	3,850,953	3,823,437
Puerto Rico | Consumer | Auto Loan | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	16,694	15,782
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	16,694	15,782
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	172,327	160,229
Puerto Rico | Consumer | Other | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	371	16
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	8	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	363	16
Puerto Rico | Leasing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,998,651	1,925,405
Puerto Rico | Leasing | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,597	1,438
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	1,597	1,437
Puerto Rico | Leasing | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	1
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	11,525,367	10,928,631
Popular U.S. | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	81,211	29,191
Popular U.S. | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	81,211	28,019
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	0	18
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	0	1,154
Popular U.S. | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,300,659	1,051,502
Popular U.S. | Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,325,302	1,304,302
Popular U.S. | Mortgages | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,651	1,430
Popular U.S. | Mortgages | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,651	1,430
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	2,187,223	2,091,619
Popular U.S. | Commercial | Commercial multi-family | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	13,915	14,517
Popular U.S. | Commercial | Commercial multi-family | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	13,915	14,517
Popular U.S. | Commercial | Commercial multi-family | Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	0
Popular U.S. | Commercial | Commercial multi-family | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	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	0
Popular U.S. | Commercial | CRE non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	2,159,835	2,116,732
Popular U.S. | Commercial | CRE non-owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	65,645	7,116
Popular U.S. | Commercial | CRE non-owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	65,645	7,116
Popular U.S. | Commercial | CRE non-owner occupied | Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	0
Popular U.S. | Commercial | CRE non-owner occupied | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	0	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	0
Popular U.S. | Commercial | CRE owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	1,895,440	1,781,835
Popular U.S. | Commercial | CRE owner occupied | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross		4,956
Popular U.S. | Commercial | CRE owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross		4,956
Popular U.S. | Commercial | CRE owner occupied | Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross		0
Popular U.S. | Commercial | CRE owner occupied | Equipment
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
Popular U.S. | Commercial | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	2,493,641	2,394,668
Popular U.S. | Commercial | Commercial and Industrial | Collateral assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross		1,172
Popular U.S. | Commercial | Commercial and Industrial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross		0
Popular U.S. | Commercial | Commercial and Industrial | Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross		0
Popular U.S. | Commercial | Commercial and Industrial | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross		18
Popular U.S. | Commercial | Commercial and Industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross		1,154
Popular U.S. | Consumer | Personal loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	77,177	104,867
Popular U.S. | Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Gross	$ 8,893	$ 11,549

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