Goodwill and other intangible assets - Gross amount of goodwill and accumulated impairment losses (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Goodwill Gross	$ 1,004,640	$ 1,004,640
Accumulated impairment losses	177,212	177,212
Goodwill (net amounts)	827,428	827,428
Banco Popular de Puerto Rico
Goodwill [Line Items]
Goodwill Gross	440,184	440,184
Accumulated impairment losses	3,801	3,801
Goodwill (net amounts)	436,383	436,383
Popular U.S.
Goodwill [Line Items]
Goodwill Gross	564,456	564,456
Accumulated impairment losses	173,411	173,411
Goodwill (net amounts)	$ 391,045	$ 391,045