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Goodwill and Intangible Assets Disclosure [Line Items]

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The percentage of goodwill from two subsidiaries to total goodwill as of the balance sheet date if other than 100 percent.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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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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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of fair value of reporting unit in excess of carrying amount.

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Percentage of fair value of reporting unit in excess of carrying amount.

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Goodwill and other intangible assets - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jul. 31, 2023	Dec. 31, 2022	Jul. 31, 2022	Dec. 31, 2021
Goodwill and other intangible assets
Amortization Of Intangible Assets	$ 795	$ 795	$ 2,385	$ 2,481
Goodwill on acquisition			0	116,135
Goodwill impairment	23,000	9,000	23,000	9,000
Goodwill	$ 804,428	827,428	$ 804,428	827,428		$ 827,428		$ 720,293
Discounted cash flow approach \| Minimum
Goodwill and other intangible assets
Cost of equity discount rate	12.30%		12.30%
Discounted cash flow approach \| Maximum
Goodwill and other intangible assets
Cost of equity discount rate	16.96%		16.96%
Banco Popular de Puerto Rico
Goodwill and other intangible assets
Fair Value Excess Over Carrying Amount					$ 3,700,000		$ 3,100,000
Percentage excess of fair value of reporting unit over equity value					468.00%		245.00%
Goodwill on acquisition			$ 0	116,135
Goodwill impairment			0	0
Goodwill	$ 436,383	436,383	436,383	436,383		436,383		320,248
Popular U.S.
Goodwill and other intangible assets
Fair Value Excess Over Carrying Amount					$ 129,000		$ 670,000
Percentage excess of fair value of reporting unit over equity value					8.00%		41.00%
Goodwill on acquisition			0	0
Goodwill impairment			23,000	9,000
Goodwill	368,045	$ 391,045	368,045	391,045		391,045		$ 400,045
Popular U.S. \| Popular Equipment Finance
Goodwill and other intangible assets
Goodwill impairment			23,000	$ 9,000
Goodwill	$ 17,000		$ 17,000			$ 40,000
Banco Popular de Puerto Rico and Popular Bank
Goodwill and other intangible assets
Percentage Of Goodwill					93.00%