Allowance for credit losses - Allowance Movement (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 730,077	$ 700,200	$ 729,341	$ 720,302
Provision for credit losses (benefit)	72,769	43,514	189,312	126,321
Allowance for credit losses - PCD Loans	3	9	26	87
Charge-offs	(81,276)	(61,313)	(239,748)	(160,239)
Recoveries	22,747	28,658	65,389	70,781
Net Write Down				(601)
Ending balance	744,320	711,068	744,320	711,068
Allowance for credit losses - unfunded commitments:
Balance at beginning of period	18,884	11,593	17,006	8,805
Provision for credit losses (benefit)	(500)	1,691	1,378	4,479
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net Write Down				0
Balance at end of period	18,384	13,284	18,384	13,284
ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(45,583)
Allowance for credit losses - unfunded commitments:
Impact of adopting ASU 2022-02				0
Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	12,889	11,332	12,686	4,246
Provision for credit losses (benefit)	(711)	2,250	(608)	9,336
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	0	(2,611)	0	(2,611)
Recoveries	1,036	0	1,136	0
Net Write Down				0
Ending balance	13,214	10,971	13,214	10,971
Allowance for credit losses - unfunded commitments:
Balance at beginning of period	10,494	4,907	10,064	3,206
Provision for credit losses (benefit)	(236)	1,890	194	3,591
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net Write Down				0
Balance at end of period	10,258	6,797	10,258	6,797
Construction | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Allowance for credit losses - unfunded commitments:
Impact of adopting ASU 2022-02				0
Mortgages
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	83,289	96,093	83,214	135,254
Provision for credit losses (benefit)	(5,582)	(8,060)	(13,747)	(19,106)
Allowance for credit losses - PCD Loans	3	9	26	87
Charge-offs	(208)	(62)	(1,017)	(1,205)
Recoveries	4,148	3,924	13,174	12,528
Net Write Down				0
Ending balance	81,650	91,904	81,650	91,904
Mortgages | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(35,654)
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	260,087	248,953	258,413	235,376
Provision for credit losses (benefit)	9,986	(23,402)	25,176	(11,167)
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(6,928)	(5,230)	(26,654)	(11,343)
Recoveries	3,403	13,745	9,613	22,913
Net Write Down				0
Ending balance	266,548	234,066	266,548	234,066
Allowance for credit losses - unfunded commitments:
Balance at beginning of period	8,390	6,636	6,913	5,511
Provision for credit losses (benefit)	(264)	(203)	1,213	922
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net Write Down				0
Balance at end of period	8,126	6,433	8,126	6,433
Commercial | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(1,713)
Allowance for credit losses - unfunded commitments:
Impact of adopting ASU 2022-02				0
Commercial | Commercial multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	11,180	26,179	13,740	26,311
Provision for credit losses (benefit)	(1,543)	(10,957)	(3,668)	(11,093)
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	0	0	(441)	0
Recoveries	5	1	11	5
Net Write Down				0
Ending balance	9,642	15,223	9,642	15,223
Commercial | Commercial multi-family | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Commercial | CRE non-owner occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	64,235	71,716	65,453	71,540
Provision for credit losses (benefit)	3,397	(4,801)	1,704	(6,248)
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(123)	(27)	(123)	(636)
Recoveries	121	261	596	2,493
Net Write Down				0
Ending balance	67,630	67,149	67,630	67,149
Commercial | CRE non-owner occupied | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Commercial | CRE owner occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	58,190	51,407	56,864	57,081
Provision for credit losses (benefit)	(6,848)	(1,930)	(4,492)	(8,147)
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(2)	(1,664)	(2,787)	(1,920)
Recoveries	1,575	296	3,330	2,256
Net Write Down				0
Ending balance	52,915	48,109	52,915	48,109
Commercial | CRE owner occupied | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(1,161)
Commercial | Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	126,482	99,651	122,356	80,444
Provision for credit losses (benefit)	14,980	(5,714)	31,632	14,321
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(6,803)	(3,539)	(23,303)	(8,787)
Recoveries	1,702	13,187	5,676	18,159
Net Write Down				0
Ending balance	136,361	103,585	136,361	103,585
Commercial | Commercial and industrial | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(552)
Leasing
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	14,385	13,927	9,708	20,618
Provision for credit losses (benefit)	3,725	(2,287)	14,787	(7,023)
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(3,630)	(2,292)	(12,321)	(6,249)
Recoveries	1,374	850	3,680	2,887
Net Write Down				0
Ending balance	15,854	10,198	15,854	10,198
Leasing | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(35)
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	359,427	329,895	365,320	324,808
Provision for credit losses (benefit)	65,351	75,013	163,704	154,281
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(70,510)	(51,118)	(199,756)	(138,831)
Recoveries	12,786	10,139	37,786	32,453
Net Write Down				(601)
Ending balance	367,054	363,929	367,054	363,929
Allowance for credit losses - unfunded commitments:
Balance at beginning of period		50	29	88
Provision for credit losses (benefit)		4	(29)	(34)
Allowance for credit losses - PCD Loans		0	0	0
Charge-offs		0	0	0
Recoveries		0	0	0
Net Write Down				0
Balance at end of period	0	54	0	54
Consumer | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(8,181)
Allowance for credit losses - unfunded commitments:
Impact of adopting ASU 2022-02				0
Consumer | Credit card
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	86,313	71,408	80,487	58,670
Provision for credit losses (benefit)	21,238	9,773	54,734	35,902
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(17,503)	(10,865)	(50,318)	(27,999)
Recoveries	2,646	2,234	7,791	6,578
Net Write Down				(601)
Ending balance	92,694	72,550	92,694	72,550
Consumer | Credit card | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Consumer | HELOC
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	1,726	2,170	1,978	2,542
Provision for credit losses (benefit)	(68)	199	(706)	(526)
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(86)	(267)	(398)	(530)
Recoveries	282	285	980	901
Net Write Down				0
Ending balance	1,854	2,387	1,854	2,387
Consumer | HELOC | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Consumer | Personal loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	107,448	115,828	117,790	118,426
Provision for credit losses (benefit)	23,031	32,623	64,572	70,366
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(29,154)	(24,896)	(87,104)	(63,534)
Recoveries	3,217	2,561	9,284	9,018
Net Write Down				0
Ending balance	104,542	126,116	104,542	126,116
Consumer | Personal loans | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(8,160)
Consumer | Auto Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	157,449	134,247	157,931	129,735
Provision for credit losses (benefit)	20,765	30,880	44,386	45,108
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(23,011)	(14,553)	(59,787)	(34,770)
Recoveries	6,110	4,862	18,783	15,384
Net Write Down				0
Ending balance	161,313	155,436	161,313	155,436
Consumer | Auto Loan | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(21)
Consumer | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	6,491	6,242	7,134	15,435
Provision for credit losses (benefit)	385	1,538	718	3,431
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(756)	(537)	(2,149)	(11,998)
Recoveries	531	197	948	572
Net Write Down				0
Ending balance	6,651	7,440	6,651	7,440
Consumer | Other | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Puerto Rico
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	643,605	596,108	639,858	615,545
Provision for credit losses (benefit)	77,147	54,017	186,740	127,599
Allowance for credit losses - PCD Loans	3	9	26	87
Charge-offs	(76,135)	(52,964)	(222,011)	(140,380)
Recoveries	21,554	27,364	61,561	64,629
Net Write Down				(601)
Ending balance	666,174	624,534	666,174	624,534
Allowance for credit losses - unfunded commitments:
Balance at beginning of period	7,635	8,398	6,680	6,358
Provision for credit losses (benefit)	1,189	(2,168)	2,144	(128)
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net Write Down				0
Balance at end of period	8,824	6,230	8,824	6,230
Puerto Rico | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(42,345)
Allowance for credit losses - unfunded commitments:
Impact of adopting ASU 2022-02				0
Puerto Rico | Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	3,638	9,554	5,294	2,978
Impact of adopting ASU 2022-02				0
Provision for credit losses (benefit)	(970)	(1,486)	(2,626)	5,090
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	0	(2,611)	0	(2,611)
Recoveries	1,036	0	1,036	0
Net Write Down				0
Ending balance	3,704	5,457	3,704	5,457
Allowance for credit losses - unfunded commitments:
Balance at beginning of period	2,095	3,110	1,618	2,022
Provision for credit losses (benefit)	373	(1,768)	850	(680)
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net Write Down				0
Balance at end of period	2,468	1,342	2,468	1,342
Puerto Rico | Construction | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Allowance for credit losses - unfunded commitments:
Impact of adopting ASU 2022-02				0
Puerto Rico | Mortgages
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	73,900	82,899	72,440	117,344
Impact of adopting ASU 2022-02				33,556
Provision for credit losses (benefit)	(5,221)	(6,808)	(11,959)	(15,113)
Allowance for credit losses - PCD Loans	3	9	26	87
Charge-offs	(208)	(62)	(999)	(1,205)
Recoveries	4,102	3,862	13,068	12,343
Net Write Down				0
Ending balance	72,576	79,900	72,576	79,900
Puerto Rico | Mortgages | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(33,556)
Puerto Rico | Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	207,327	181,691	205,582	174,295
Provision for credit losses (benefit)	17,106	(6,479)	30,724	99
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(6,261)	(2,784)	(23,787)	(6,140)
Recoveries	3,076	13,333	8,729	19,220
Net Write Down				0
Ending balance	221,248	185,761	221,248	185,761
Allowance for credit losses - unfunded commitments:
Balance at beginning of period	5,540	5,288	5,062	4,336
Provision for credit losses (benefit)	816	(400)	1,294	552
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net Write Down				0
Balance at end of period	6,356	4,888	6,356	4,888
Puerto Rico | Commercial | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(1,713)
Allowance for credit losses - unfunded commitments:
Impact of adopting ASU 2022-02				0
Puerto Rico | Commercial | Commercial multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	3,303	4,787	3,614	5,210
Provision for credit losses (benefit)	(417)	(1,306)	(729)	(1,730)
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	1	1
Net Write Down				0
Ending balance	2,886	3,481	2,886	3,481
Puerto Rico | Commercial | Commercial multi-family | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Puerto Rico | Commercial | CRE non-owner occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	53,386	53,366	53,754	52,475
Provision for credit losses (benefit)	3,344	(326)	2,607	860
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(69)	(27)	(69)	(636)
Recoveries	59	195	428	509
Net Write Down				0
Ending balance	56,720	53,208	56,720	53,208
Puerto Rico | Commercial | CRE non-owner occupied | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Puerto Rico | Commercial | CRE owner occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	39,375	41,901	40,637	48,393
Provision for credit losses (benefit)	(2,418)	(242)	(2,567)	(7,409)
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(2)	(446)	(2,787)	(525)
Recoveries	1,556	280	3,228	2,195
Net Write Down				0
Ending balance	38,511	41,493	38,511	41,493
Puerto Rico | Commercial | CRE owner occupied | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(1,161)
Puerto Rico | Commercial | Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	111,263	81,637	107,577	68,217
Provision for credit losses (benefit)	16,597	(4,605)	31,413	8,378
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(6,190)	(2,311)	(20,931)	(4,979)
Recoveries	1,461	12,858	5,072	16,515
Net Write Down				0
Ending balance	123,131	87,579	123,131	87,579
Puerto Rico | Commercial | Commercial and industrial | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(552)
Puerto Rico | Leasing
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	14,385	13,927	9,708	20,618
Provision for credit losses (benefit)	3,725	(2,287)	14,787	(7,023)
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(3,630)	(2,292)	(12,321)	(6,249)
Recoveries	1,374	850	3,680	2,887
Net Write Down				0
Ending balance	15,854	10,198	15,854	10,198
Puerto Rico | Leasing | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(35)
Puerto Rico | Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	344,355	308,037	346,834	300,310
Provision for credit losses (benefit)	62,507	71,077	155,814	144,546
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(66,036)	(45,215)	(184,904)	(124,175)
Recoveries	11,966	9,319	35,048	30,179
Net Write Down				(601)
Ending balance	352,792	343,218	352,792	343,218
Puerto Rico | Consumer | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(7,041)
Puerto Rico | Consumer | Credit card
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	86,313	71,408	80,487	58,670
Provision for credit losses (benefit)	21,238	9,773	54,734	35,901
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(17,503)	(10,865)	(50,318)	(27,998)
Recoveries	2,646	2,234	7,791	6,578
Net Write Down				(601)
Ending balance	92,694	72,550	92,694	72,550
Puerto Rico | Consumer | Credit card | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Puerto Rico | Consumer | HELOC
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	83	96	103	103
Provision for credit losses (benefit)	(90)	(39)	35	(107)
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(82)	(43)	(373)	(111)
Recoveries	158	73	304	202
Net Write Down				0
Ending balance	69	87	69	87
Puerto Rico | Consumer | HELOC | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Puerto Rico | Consumer | Personal loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	94,021	96,046	101,181	96,369
Provision for credit losses (benefit)	20,232	28,964	55,987	60,347
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(24,712)	(19,260)	(72,354)	(49,441)
Recoveries	2,526	1,957	7,253	7,452
Net Write Down				0
Ending balance	92,067	107,707	92,067	107,707
Puerto Rico | Consumer | Personal loans | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(7,020)
Puerto Rico | Consumer | Auto Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	157,449	134,247	157,931	129,735
Provision for credit losses (benefit)	20,765	30,880	44,386	45,108
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(23,011)	(14,553)	(59,787)	(34,770)
Recoveries	6,110	4,862	18,783	15,384
Net Write Down				0
Ending balance	161,313	155,436	161,313	155,436
Puerto Rico | Consumer | Auto Loan | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(21)
Puerto Rico | Consumer | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	6,489	6,240	7,132	15,433
Provision for credit losses (benefit)	362	1,499	672	3,297
Allowance for credit losses - PCD Loans	0	0	0	0
Charge-offs	(728)	(494)	(2,072)	(11,855)
Recoveries	526	193	917	563
Net Write Down				0
Ending balance	6,649	7,438	6,649	7,438
Puerto Rico | Consumer | Other | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Popular U.S.
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	86,472	104,092	89,483	104,757
Provision for credit losses (benefit)	(4,378)	(10,503)	2,572
Allowance for credit losses - PCD Loans				1,278
Charge-offs	(5,141)	(8,349)	(17,737)	(19,859)
Recoveries	1,193	1,294	3,828	6,152
Ending balance	78,146	86,534	78,146	86,534
Allowance for credit losses - unfunded commitments:
Balance at beginning of period	11,249	3,195	10,326	2,447
Provision for credit losses (benefit)	(1,689)	3,859	(766)	4,607
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance at end of period	9,560	7,054	9,560	7,054
Popular U.S. | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(3,238)
Allowance for credit losses - unfunded commitments:
Impact of adopting ASU 2022-02				0
Popular U.S. | Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	9,251	1,778	7,392	1,268
Provision for credit losses (benefit)	259	3,736	2,018
Allowance for credit losses - PCD Loans				(4,246)
Charge-offs	0	0	0	0
Recoveries	0	0	100	0
Ending balance	9,510	5,514	9,510	5,514
Allowance for credit losses - unfunded commitments:
Balance at beginning of period	8,399	1,797	8,446	1,184
Provision for credit losses (benefit)	(609)	3,658	(656)	4,271
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance at end of period	7,790	5,455	7,790	5,455
Popular U.S. | Construction | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Allowance for credit losses - unfunded commitments:
Impact of adopting ASU 2022-02				0
Popular U.S. | Mortgages
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	9,389	13,194	10,774	17,910
Provision for credit losses (benefit)	(361)	(1,252)	(1,788)
Allowance for credit losses - PCD Loans				3,993
Charge-offs	0	0	(18)	0
Recoveries	46	62	106	185
Ending balance	9,074	12,004	9,074	12,004
Popular U.S. | Mortgages | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(2,098)
Popular U.S. | Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	52,760	67,262	52,831	61,081
Provision for credit losses (benefit)	(7,120)	(16,923)	(5,548)	(11,266)
Charge-offs	(667)	(2,446)	(2,867)	(5,203)
Recoveries	327	412	884	3,693
Ending balance	45,300	48,305	45,300	48,305
Allowance for credit losses - unfunded commitments:
Balance at beginning of period	2,850	1,348	1,851	1,175
Provision for credit losses (benefit)	(1,080)	197	(81)
Allowance for credit losses - PCD Loans				(370)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance at end of period	1,770	1,545	1,770	1,545
Popular U.S. | Commercial | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Allowance for credit losses - unfunded commitments:
Impact of adopting ASU 2022-02				0
Popular U.S. | Commercial | Commercial multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	7,877	21,392	10,126	21,101
Provision for credit losses (benefit)	(1,126)	(9,651)	(2,939)	(9,363)
Charge-offs	0	0	(441)	0
Recoveries	5	1	10	4
Ending balance	6,756	11,742	6,756	11,742
Popular U.S. | Commercial | Commercial multi-family | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Popular U.S. | Commercial | CRE non-owner occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	10,849	18,350	11,699	19,065
Provision for credit losses (benefit)	53	(4,475)	(903)	(7,108)
Charge-offs	(54)	0	(54)	0
Recoveries	62	66	168	1,984
Ending balance	10,910	13,941	10,910	13,941
Popular U.S. | Commercial | CRE non-owner occupied | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Popular U.S. | Commercial | CRE owner occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	18,815	9,506	16,227	8,688
Provision for credit losses (benefit)	(4,430)	(1,688)	(1,925)	(738)
Charge-offs	0	(1,218)	0	(1,395)
Recoveries	19	16	102	61
Ending balance	14,404	6,616	14,404	6,616
Popular U.S. | Commercial | CRE owner occupied | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Popular U.S. | Commercial | Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	15,219	18,014	14,779	12,227
Provision for credit losses (benefit)	(1,617)	(1,109)	219	5,943
Charge-offs	(613)	(1,228)	(2,372)	(3,808)
Recoveries	241	329	604	1,644
Ending balance	13,230	16,006	13,230	16,006
Popular U.S. | Commercial | Commercial and industrial | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Popular U.S. | Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	15,072	21,858	18,486	24,498
Provision for credit losses (benefit)	2,844	3,936	7,890	9,735
Charge-offs	(4,474)	(5,903)	(14,852)	(14,656)
Recoveries	820	820	2,738	2,274
Ending balance	14,262	20,711	14,262	20,711
Allowance for credit losses - unfunded commitments:
Balance at beginning of period		50	29	88
Provision for credit losses (benefit)		4	(29)
Allowance for credit losses - PCD Loans				34
Charge-offs		0	0	0
Recoveries		0	0	0
Balance at end of period	0	54	0	54
Popular U.S. | Consumer | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(1,140)
Allowance for credit losses - unfunded commitments:
Impact of adopting ASU 2022-02				0
Popular U.S. | Consumer | Credit card
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance				0
Provision for credit losses (benefit)				1
Charge-offs				(1)
Recoveries				0
Ending balance		0		0
Popular U.S. | Consumer | Credit card | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Popular U.S. | Consumer | HELOC
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	1,643	2,074	1,875	2,439
Provision for credit losses (benefit)	22	238	(741)	(419)
Charge-offs	(4)	(224)	(25)	(419)
Recoveries	124	212	676	699
Ending balance	1,785	2,300	1,785	2,300
Popular U.S. | Consumer | HELOC | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				0
Popular U.S. | Consumer | Personal loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	13,427	19,782	16,609	22,057
Provision for credit losses (benefit)	2,799	3,659	8,585	10,019
Charge-offs	(4,442)	(5,636)	(14,750)	(14,093)
Recoveries	691	604	2,031	1,566
Ending balance	12,475	18,409	12,475	18,409
Popular U.S. | Consumer | Personal loans | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				(1,140)
Popular U.S. | Consumer | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	2	2	2	2
Provision for credit losses (benefit)	23	39	46	134
Charge-offs	(28)	(43)	(77)	(143)
Recoveries	5	4	31	9
Ending balance	$ 2	$ 2	$ 2	2
Popular U.S. | Consumer | Other | ASU 2022-02
Financing Receivable, Allowance for Credit Losses [Line Items]
Impact of adopting ASU 2022-02				$ 0