Segment Reporting - Additional Information (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($) units	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting Information
Number Of Operating Segments \| units	2
Factors Used To Identify Entitys Reportable Segments	Banco Popular de Puerto Rico and Popular U.S.Management determined the reportable segments based on the internal reporting used to evaluate performance and to assess where to allocate resources.
Net Revenue	$ 2,461,577	$ 2,387,371	$ 1,921,131
Assets	52,115,324	47,604,577	44,277,337
Deposits	43,758,606	39,710,039
UNITED STATES
Segment Reporting Information
Net Revenue	371,368	357,680	318,093
Assets	10,693,536	9,847,944	9,648,865
Deposits	7,664,792	6,878,599	6,635,153
Other
Segment Reporting Information
Net Revenue	74,120	76,020	75,280
Assets	877,533	892,703	922,848
Deposits	1,429,571	1,593,911	1,243,063
Popular U.S.
Segment Reporting Information
Intercompany billings		12,500	10,300
Banco Popular de Puerto Rico
Segment Reporting Information
Intercompany billings		78,300	66,400
Banco Popular de Puerto Rico \| UNITED STATES
Segment Reporting Information
Net Revenue	55,700	37,600	24,500
Assets	635,000	455,000
Deposits	46,000	92,000
Banco Popular de Puerto Rico \| Other
Segment Reporting Information
Net Revenue	$ 47,600	$ 48,800	$ 50,500

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Aggregate revenue, net of interest expense, recognized during the period. It includes Net interest income plus other income (service charge on deposit accounts, other service fees, net gain on sale and valuation adjustments of investment securities, trading account profit, net gain on sale of loans and valuation adjustments on loans held-for-sale, adjustments to indemnity reserves on loans sold, FDIC loss share income, fair value change in equity appreciation instrument and other operating income.

+ References

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 210
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-Subparagraph (SX 210.7-03(a)(12))
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Description of the factors used to identify reportable segments, including the basis of organization (for example, whether management has chosen to organize the enterprise around differences in products and services, geographic areas, regulatory environments, or a combination of factors and whether operating segments have been aggregated to reportable segments).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8721-108599

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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