Note Goodwill and other intangible assets - Carrying amount of goodwill by reportable segments (Detail) $ in Thousands	9 Months Ended
Sep. 30, 2018 USD ($)
Goodwill
Beginning Balance	$ 627,294
Goodwill on acquisition	60,242
Purchase accounting adjustments	0
Goodwill impairment charge	0
Ending Balance	687,536
Banco Popular de Puerto Rico
Goodwill
Beginning Balance	276,420
Goodwill on acquisition	60,242
Purchase accounting adjustments	0
Goodwill impairment charge	0
Ending Balance	336,662
Popular U.S.
Goodwill
Beginning Balance	350,874
Goodwill on acquisition	0
Purchase accounting adjustments	0
Goodwill impairment charge	0
Ending Balance	$ 350,874

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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