Condensed Consolidating Statement of Condition (Detail) - USD ($) $ in Thousands		Jun. 30, 2016		Dec. 31, 2015		Jun. 30, 2015	Dec. 31, 2014
Assets
Cash And Due From Banks		$ 365,308		$ 363,674
Money market investments		2,785,500		2,180,092
Trading account securities, at fair value		72,530		71,659
Investment securities available-for-sale, at fair value		7,242,676	[1]	6,062,992	[2]
Investment securities held-to-maturity, at amortized cost		99,525	[3]	100,903	[4]
Other investment securities, at lower of cost or realizable value		168,563		172,248
Investment in subsidiaries		0		0
Loans held-for-sale, at lower of cost or fair value		122,338		137,000
Loans held-in-portfolio:
Loans not covered under loss-sharing agreements with the FDIC		22,655,877		22,453,813
Loans covered under loss-sharing agreements with the FDIC		607,170		646,115
Less - Unearned income		115,216		107,698
Allowance for loan losses		548,720		537,111
Total loans held-in-portfolio, net		22,599,111		22,455,119
FDIC loss-share asset		214,029		310,221
Premises and equipment, net		535,865		502,611
Accrued income receivable		120,979		124,234
Mortgage servicing assets, at fair value		203,577		211,405		$ 206,357	$ 148,694
Other assets		2,179,060		2,193,162
Goodwill		631,095		626,388		505,435	465,676
Other intangible assets		50,983		58,109
Total assets		37,606,148		35,761,733
Deposits:
Non-interest bearing		6,531,108		6,401,515
Interest bearing		22,206,748		20,808,208
Total deposits		28,737,856		27,209,723
Federal funds purchased and assets sold under agreements to repurchase		821,604		762,145
Other short-term borrowings		31,200		1,200
Notes payable		1,575,948		1,662,508
Other liabilities		1,077,894		1,019,018
Liabilities from discontinued operations		1,815		1,815
Total liabilities		32,246,317		30,656,409
Stockholders' equity:
Preferred stock		50,160		50,160
Common stock		1,039		1,038
Surplus		4,232,835		4,229,156
Retained Earnings (Accumulated Deficit)		1,228,979		1,087,957
Treasury stock		(7,570)		(6,101)
Accumulated other comprehensive (loss) income, net of tax	[5]	(145,612)		(256,886)		(219,031)
Total stockholders' equity		5,359,831		5,105,324		$ 4,949,653	$ 4,267,382
Total liabilities and stockholders' equity		37,606,148		35,761,733
Non Covered Under Loss Sharing Agreements with FDIC
Loans held-in-portfolio:
Other real estate owned		177,025		155,231
Covered Under Loss Sharing Agreements With FDIC Member
Loans held-in-portfolio:
Loans covered under loss-sharing agreements with the FDIC		607,170		646,115
Other real estate owned		37,984		36,685
Popular, Inc. Holding Co.
Assets
Cash And Due From Banks		37,306		24,298
Money market investments		262,285		262,204
Trading account securities, at fair value		2,271		2,020
Investment securities available-for-sale, at fair value		258		216
Investment securities held-to-maturity, at amortized cost		0		0
Other investment securities, at lower of cost or realizable value		9,850		9,850
Investment in subsidiaries		5,775,328		5,539,325
Loans held-for-sale, at lower of cost or fair value		0		0
Loans held-in-portfolio:
Loans not covered under loss-sharing agreements with the FDIC		1,159		1,176
Loans covered under loss-sharing agreements with the FDIC		0		0
Less - Unearned income		0		0
Allowance for loan losses		34		3
Total loans held-in-portfolio, net		1,125		1,173
FDIC loss-share asset		0		0
Premises and equipment, net		3,077		2,823
Accrued income receivable		103		85
Mortgage servicing assets, at fair value		0		0
Other assets		57,937		54,908
Goodwill		0		0
Other intangible assets		554		554
Total assets		6,150,377		5,897,988
Deposits:
Non-interest bearing		0		0
Interest bearing		0		0
Total deposits		0		0
Federal funds purchased and assets sold under agreements to repurchase		0		0
Other short-term borrowings		0		0
Notes payable		734,557		733,516
Other liabilities		55,898		59,148
Liabilities from discontinued operations		0		0
Total liabilities		790,455		792,664
Stockholders' equity:
Preferred stock		50,160		50,160
Common stock		1,040		1,038
Surplus		4,224,309		4,220,629
Retained Earnings (Accumulated Deficit)		1,237,505		1,096,484
Treasury stock		(7,480)		(6,101)
Accumulated other comprehensive (loss) income, net of tax		(145,612)		(256,886)
Total stockholders' equity		5,359,922		5,105,324
Total liabilities and stockholders' equity		6,150,377		5,897,988
Popular, Inc. Holding Co. | Non Covered Under Loss Sharing Agreements with FDIC
Loans held-in-portfolio:
Other real estate owned		283		532
Popular, Inc. Holding Co. | Covered Under Loss Sharing Agreements With FDIC Member
Loans held-in-portfolio:
Other real estate owned		0		0
PNA Holding Co.
Assets
Cash And Due From Banks		595		600
Money market investments		18,488		23,931
Trading account securities, at fair value		0		0
Investment securities available-for-sale, at fair value		0		0
Investment securities held-to-maturity, at amortized cost		0		0
Other investment securities, at lower of cost or realizable value		4,492		4,492
Investment in subsidiaries		1,838,488		1,789,512
Loans held-for-sale, at lower of cost or fair value		0		0
Loans held-in-portfolio:
Loans not covered under loss-sharing agreements with the FDIC		0		0
Loans covered under loss-sharing agreements with the FDIC		0		0
Less - Unearned income		0		0
Allowance for loan losses		0		0
Total loans held-in-portfolio, net		0		0
FDIC loss-share asset		0		0
Premises and equipment, net		0		0
Accrued income receivable		145		115
Mortgage servicing assets, at fair value		0		0
Other assets		23,292		23,596
Goodwill		0		0
Other intangible assets		0		0
Total assets		1,885,500		1,842,246
Deposits:
Non-interest bearing		0		0
Interest bearing		0		0
Total deposits		0		0
Federal funds purchased and assets sold under agreements to repurchase		0		0
Other short-term borrowings		0		0
Notes payable		148,498		148,483
Other liabilities		6,262		6,659
Liabilities from discontinued operations		0		0
Total liabilities		154,760		155,142
Stockholders' equity:
Preferred stock		0		0
Common stock		2		2
Surplus		4,111,207		4,111,208
Retained Earnings (Accumulated Deficit)		(2,400,493)		(2,416,251)
Treasury stock		0		0
Accumulated other comprehensive (loss) income, net of tax		20,024		(7,855)
Total stockholders' equity		1,730,740		1,687,104
Total liabilities and stockholders' equity		1,885,500		1,842,246
PNA Holding Co. | Non Covered Under Loss Sharing Agreements with FDIC
Loans held-in-portfolio:
Other real estate owned		0		0
PNA Holding Co. | Covered Under Loss Sharing Agreements With FDIC Member
Loans held-in-portfolio:
Other real estate owned		0		0
All other subsidiaries and eliminations
Assets
Cash And Due From Banks		365,034		363,620
Money market investments		2,785,215		2,179,887
Trading account securities, at fair value		70,349		69,639
Investment securities available-for-sale, at fair value		7,242,418		6,062,776
Investment securities held-to-maturity, at amortized cost		99,525		100,903
Other investment securities, at lower of cost or realizable value		154,221		157,906
Investment in subsidiaries		0		0
Loans held-for-sale, at lower of cost or fair value		122,338		137,000
Loans held-in-portfolio:
Loans not covered under loss-sharing agreements with the FDIC		22,654,718		22,452,637
Loans covered under loss-sharing agreements with the FDIC		607,170		646,115
Less - Unearned income		115,216		107,698
Allowance for loan losses		548,686		537,108
Total loans held-in-portfolio, net		22,597,986		22,453,946
FDIC loss-share asset		214,029		310,221
Premises and equipment, net		532,788		499,788
Accrued income receivable		120,819		124,070
Mortgage servicing assets, at fair value		203,577		211,405
Other assets		2,113,461		2,132,616
Goodwill		631,095		626,388
Other intangible assets		50,429		57,555
Total assets		37,518,010		35,679,104
Deposits:
Non-interest bearing		6,568,735		6,426,359
Interest bearing		22,487,236		21,094,138
Total deposits		29,055,971		27,520,497
Federal funds purchased and assets sold under agreements to repurchase		821,604		762,145
Other short-term borrowings		31,200		1,200
Notes payable		692,893		780,509
Other liabilities		1,031,686		971,429
Liabilities from discontinued operations		1,815		1,815
Total liabilities		31,635,169		30,037,595
Stockholders' equity:
Preferred stock		0		0
Common stock		56,306		56,307
Surplus		5,698,606		5,712,635
Retained Earnings (Accumulated Deficit)		271,530		128,459
Treasury stock		0		0
Accumulated other comprehensive (loss) income, net of tax		(143,601)		(255,892)
Total stockholders' equity		5,882,841		5,641,509
Total liabilities and stockholders' equity		37,518,010		35,679,104
All other subsidiaries and eliminations | Non Covered Under Loss Sharing Agreements with FDIC
Loans held-in-portfolio:
Other real estate owned		176,742		154,699
All other subsidiaries and eliminations | Covered Under Loss Sharing Agreements With FDIC Member
Loans held-in-portfolio:
Other real estate owned		37,984		36,685
Elimination
Assets
Cash And Due From Banks		(37,627)		(24,844)
Money market investments		(280,488)		(285,930)
Trading account securities, at fair value		(90)		0
Investment securities available-for-sale, at fair value		0		0
Investment securities held-to-maturity, at amortized cost		0		0
Other investment securities, at lower of cost or realizable value		0		0
Investment in subsidiaries		(7,613,816)		(7,328,837)
Loans held-for-sale, at lower of cost or fair value		0		0
Loans held-in-portfolio:
Loans not covered under loss-sharing agreements with the FDIC		0		0
Loans covered under loss-sharing agreements with the FDIC		0		0
Less - Unearned income		0		0
Allowance for loan losses		0		0
Total loans held-in-portfolio, net		0		0
FDIC loss-share asset		0		0
Premises and equipment, net		0		0
Accrued income receivable		(88)		(36)
Mortgage servicing assets, at fair value		0		0
Other assets		(15,630)		(17,958)
Goodwill		0		0
Other intangible assets		0		0
Total assets		(7,947,739)		(7,657,605)
Deposits:
Non-interest bearing		(37,627)		(24,844)
Interest bearing		(280,488)		(285,930)
Total deposits		(318,115)		(310,774)
Federal funds purchased and assets sold under agreements to repurchase		0		0
Other short-term borrowings		0		0
Notes payable		0		0
Other liabilities		(15,952)		(18,218)
Liabilities from discontinued operations		0		0
Total liabilities		(334,067)		(328,992)
Stockholders' equity:
Preferred stock		0		0
Common stock		(56,309)		(56,309)
Surplus		(9,801,287)		(9,815,316)
Retained Earnings (Accumulated Deficit)		2,120,437		2,279,265
Treasury stock		(90)		0
Accumulated other comprehensive (loss) income, net of tax		123,577		263,747
Total stockholders' equity		(7,613,672)		(7,328,613)
Total liabilities and stockholders' equity		(7,947,739)		(7,657,605)
Elimination | Non Covered Under Loss Sharing Agreements with FDIC
Loans held-in-portfolio:
Other real estate owned		0		0
Elimination | Covered Under Loss Sharing Agreements With FDIC Member
Loans held-in-portfolio:
Other real estate owned		$ 0		$ 0

[1] Includes $3.6 billion pledged to secure public and trust deposits, assets sold under agreements to repurchase, credit facilities and loan servicing agreements that the secured parties are not permitted to sell or repledge the collateral, of which $2.9 billion serve as collateral for public funds.

[2] Includes $2.4 billion pledged to secure public and trust deposits, assets sold under agreements to repurchase, credit facilities and loan servicing agreements that the secured parties are not permitted to sell or repledge the collateral, of which $1.5 billion serve as collateral for public funds.

[3] Includes $97.8 million pledged to secure public and trust deposits that the secured parties are not permitted to sell or repledge the collateral.

[4] Includes $57.2 million pledged to secure public and trust deposits that the secured parties are not permitted to sell or repledge the collateral.

[5] All amounts presented are net of tax.