Segment reporting - Selected Balance Sheet information (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Segment Reporting Information
Total assets	$ 50,617,221	$ 47,604,577	$ 47,535,177
Deposits	42,059,837	39,710,039
PUERTO RICO
Segment Reporting Information
Total assets	39,417,569	36,863,930
Loans	18,879,047	18,837,742
Deposits	33,574,495	31,237,529
UNITED STATES
Segment Reporting Information
Total assets	10,324,391	9,847,944
Loans	7,511,132	7,034,075
Deposits	6,951,081	6,878,599
Other
Segment Reporting Information
Total assets	875,261	892,703
Loans	669,594	687,494
Deposits	$ 1,534,261	$ 1,593,911

Reflects the aggregate carrying amount of all categories of loans and leases held for sale and held in portfolio, net of unearned income.

No definition available.

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- Definition

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

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-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

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- Definition

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.

+ References

No definition available.

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