Segment reporting - Selected Balance Sheet information (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Segment Reporting Information
Assets	$ 70,729,675	$ 75,097,899	$ 74,189,163
Deposits	64,819,327	67,005,088
Puerto Rico
Segment Reporting Information
Assets	57,192,527	63,221,282
Loans	20,760,831	19,770,118
Deposits	54,769,845	57,211,608
Popular U.S.
Segment Reporting Information
Assets	12,153,357	10,986,055
Loans	10,204,303	8,903,493
Deposits	8,016,775	7,777,232
Other
Segment Reporting Information
Assets	1,383,791	890,562
Loans	566,119	626,115
Deposits	$ 2,032,707	$ 2,016,248

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.

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+ Details