Condensed Consolidating Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
INTEREST AND DIVIDEND INCOME:
Dividend income from subsidiaries	$ 0	$ 0
Loans	450,446	447,713
Money market investments	12,000	29,220
Investment securities	87,912	81,036
Total interest and dividend income	550,358	557,969
INTEREST EXPENSE:
Deposits	62,101	70,826
Short-term borrowings	1,048	1,600
Long-term debt	14,114	14,580
Total interest expense	77,263	87,006
Net interest income	473,095	470,963
Provision for credit losses - loan portfolios	188,995	41,825
Provision for credit losses - Investment securities	736	0
Net interest income after provision for credit losses	283,364	429,138
Mortgage banking activities	6,420	9,926
Net (loss) gain, including impairment on equity securities	(2,728)	1,433
Net profit on trading account debt securities	491	260
Net gain on sale of loans, including valuation adjustments on loans held-for-sale	957	0
Adjustments To Indemnity Reserves On Loans Sold	(4,793)	(93)
Other operating income	19,864	21,906
Total non-interest income	126,643	136,430
Operating expenses:
Personnel costs	146,831	143,117
Net occupancy expenses	25,158	23,537
Equipment expenses	21,605	19,705
Other taxes	13,681	11,662
Professional fees	101,071	87,466
Communications	5,954	5,849
Business promotion	14,197	14,674
FDIC deposit insurance	5,080	4,806
Other real estate owned (O R E O) expenses	2,479	2,677
Other operating expenses	34,079	31,615
Amortization of intangibles	2,473	2,312
Total opearating expense	372,608	347,420
Income (loss) before income taxes and equity in undistributed earnings of subsidiaries	37,399	218,148
Income tax expense	3,097	50,223
Income (loss) before equity in undistributed earnings of subdidiaries	34,302	167,925
Equity in undistributed earnings (losses) of subsidiaries	0	0
Net income	34,302	167,925
Comprehensive income (loss), net of tax	414,863	271,920
Service charges on deposit accounts
INTEREST EXPENSE:
Revenue from contract with customer	41,659	38,691
Other services
INTEREST EXPENSE:
Revenue from contract with customer	64,773	64,307
Elimination
INTEREST AND DIVIDEND INCOME:
Dividend income from subsidiaries	(580,000)	(202,300)
Loans	0	0
Money market investments	(1,197)	(1,173)
Investment securities	0	0
Total interest and dividend income	(581,197)	(203,473)
INTEREST EXPENSE:
Deposits	(1,197)	(1,173)
Short-term borrowings	0	0
Long-term debt	0	0
Total interest expense	(1,197)	(1,173)
Net interest income	(580,000)	(202,300)
Provision for credit losses - loan portfolios	0	0
Provision for credit losses - Investment securities	0
Net interest income after provision for credit losses	(580,000)	(202,300)
Mortgage banking activities	0	0
Net (loss) gain, including impairment on equity securities	81	(13)
Net profit on trading account debt securities	0	0
Net gain on sale of loans, including valuation adjustments on loans held-for-sale	0
Adjustments To Indemnity Reserves On Loans Sold	0	0
Other operating income	(6)	(11)
Total non-interest income	(51)	(124)
Operating expenses:
Personnel costs	0	0
Net occupancy expenses	0	(45)
Equipment expenses	0	0
Other taxes	0	0
Professional fees	(126)	(100)
Communications	0	0
Business promotion	0	0
FDIC deposit insurance	0	0
Other real estate owned (O R E O) expenses	0	0
Other operating expenses	(697)	(571)
Amortization of intangibles	0	0
Total opearating expense	(823)	(716)
Income (loss) before income taxes and equity in undistributed earnings of subsidiaries	(579,228)	(201,708)
Income tax expense	269	218
Income (loss) before equity in undistributed earnings of subdidiaries	(579,497)	(201,926)
Equity in undistributed earnings (losses) of subsidiaries	582,746	17,735
Net income	3,249	(184,191)
Comprehensive income (loss), net of tax	(409,885)	(306,872)
Elimination | Service charges on deposit accounts
INTEREST EXPENSE:
Revenue from contract with customer	0	0
Elimination | Other services
INTEREST EXPENSE:
Revenue from contract with customer	(126)	(100)
Popular, Inc. Holding Co.
INTEREST AND DIVIDEND INCOME:
Dividend income from subsidiaries	580,000	202,300
Loans	562	588
Money market investments	1,151	1,122
Investment securities	158	154
Total interest and dividend income	581,871	204,164
INTEREST EXPENSE:
Deposits	0	0
Short-term borrowings	0	0
Long-term debt	9,632	9,632
Total interest expense	9,632	9,632
Net interest income	572,239	194,532
Provision for credit losses - loan portfolios	158	106
Provision for credit losses - Investment securities	0
Net interest income after provision for credit losses	572,081	194,426
Mortgage banking activities	0	0
Net (loss) gain, including impairment on equity securities	(1,543)	587
Net profit on trading account debt securities	0	0
Net gain on sale of loans, including valuation adjustments on loans held-for-sale	0
Adjustments To Indemnity Reserves On Loans Sold	0	0
Other operating income	4,169	5,169
Total non-interest income	2,626	5,757
Operating expenses:
Personnel costs	18,273	18,327
Net occupancy expenses	1,053	1,047
Equipment expenses	873	672
Other taxes	62	62
Professional fees	6,466	2,689
Communications	127	114
Business promotion	816	782
FDIC deposit insurance	0	0
Other real estate owned (O R E O) expenses	0	0
Other operating expenses	(26,583)	(21,339)
Amortization of intangibles	24	24
Total opearating expense	1,111	2,378
Income (loss) before income taxes and equity in undistributed earnings of subsidiaries	573,596	197,805
Income tax expense	0	0
Income (loss) before equity in undistributed earnings of subdidiaries	573,596	197,805
Equity in undistributed earnings (losses) of subsidiaries	(539,294)	(29,880)
Net income	34,302	167,925
Comprehensive income (loss), net of tax	414,863	271,920
Popular, Inc. Holding Co. | Service charges on deposit accounts
INTEREST EXPENSE:
Revenue from contract with customer	0	0
Popular, Inc. Holding Co. | Other services
INTEREST EXPENSE:
Revenue from contract with customer	0	1
PNA Holding Co.
INTEREST AND DIVIDEND INCOME:
Dividend income from subsidiaries	0	0
Loans	0	0
Money market investments	45	51
Investment securities	47	46
Total interest and dividend income	92	97
INTEREST EXPENSE:
Deposits	0	0
Short-term borrowings	0	0
Long-term debt	1,557	1,557
Total interest expense	1,557	1,557
Net interest income	(1,465)	(1,460)
Provision for credit losses - loan portfolios	0	0
Provision for credit losses - Investment securities	0
Net interest income after provision for credit losses	(1,465)	(1,460)
Mortgage banking activities	0	0
Net (loss) gain, including impairment on equity securities	0	0
Net profit on trading account debt securities	0	0
Net gain on sale of loans, including valuation adjustments on loans held-for-sale	0
Adjustments To Indemnity Reserves On Loans Sold	0	0
Other operating income	0	(1,267)
Total non-interest income	0	(1,267)
Operating expenses:
Personnel costs	0	0
Net occupancy expenses	0	0
Equipment expenses	1	1
Other taxes	1	0
Professional fees	30	27
Communications	0	0
Business promotion	0	0
FDIC deposit insurance	0	0
Other real estate owned (O R E O) expenses	0	0
Other operating expenses	13	13
Amortization of intangibles	0	0
Total opearating expense	45	41
Income (loss) before income taxes and equity in undistributed earnings of subsidiaries	(1,510)	(2,768)
Income tax expense	(317)	(581)
Income (loss) before equity in undistributed earnings of subdidiaries	(1,193)	(2,187)
Equity in undistributed earnings (losses) of subsidiaries	(43,452)	12,145
Net income	(44,645)	9,958
Comprehensive income (loss), net of tax	(15,088)	28,018
PNA Holding Co. | Service charges on deposit accounts
INTEREST EXPENSE:
Revenue from contract with customer	0	0
PNA Holding Co. | Other services
INTEREST EXPENSE:
Revenue from contract with customer	0	0
All other subsidiaries and eliminations
INTEREST AND DIVIDEND INCOME:
Dividend income from subsidiaries	0	0
Loans	449,884	447,125
Money market investments	12,001	29,220
Investment securities	87,707	80,836
Total interest and dividend income	549,592	557,181
INTEREST EXPENSE:
Deposits	63,298	71,999
Short-term borrowings	1,048	1,600
Long-term debt	2,925	3,391
Total interest expense	67,271	76,990
Net interest income	482,321	480,191
Provision for credit losses - loan portfolios	188,837	41,719
Provision for credit losses - Investment securities	736
Net interest income after provision for credit losses	292,748	438,472
Mortgage banking activities	6,420	9,926
Net (loss) gain, including impairment on equity securities	(1,266)	859
Net profit on trading account debt securities	491	260
Net gain on sale of loans, including valuation adjustments on loans held-for-sale	957
Adjustments To Indemnity Reserves On Loans Sold	(4,793)	(93)
Other operating income	15,701	18,015
Total non-interest income	124,068	132,064
Operating expenses:
Personnel costs	128,558	124,790
Net occupancy expenses	24,105	22,535
Equipment expenses	20,731	19,032
Other taxes	13,618	11,600
Professional fees	94,701	84,850
Communications	5,827	5,735
Business promotion	13,381	13,892
FDIC deposit insurance	5,080	4,806
Other real estate owned (O R E O) expenses	2,479	2,677
Other operating expenses	61,346	53,512
Amortization of intangibles	2,449	2,288
Total opearating expense	372,275	345,717
Income (loss) before income taxes and equity in undistributed earnings of subsidiaries	44,541	224,819
Income tax expense	3,145	50,586
Income (loss) before equity in undistributed earnings of subdidiaries	41,396	174,233
Equity in undistributed earnings (losses) of subsidiaries	0	0
Net income	41,396	174,233
Comprehensive income (loss), net of tax	424,973	278,854
All other subsidiaries and eliminations | Service charges on deposit accounts
INTEREST EXPENSE:
Revenue from contract with customer	41,659	38,691
All other subsidiaries and eliminations | Other services
INTEREST EXPENSE:
Revenue from contract with customer	$ 64,899	$ 64,406