| Line Item | Dec 31, 2025 | Dec 31, 2024 | Dec 31, 2023 | Dec 31, 2022 | Dec 31, 2021 | Dec 31, 2020 | Dec 31, 2019 | Dec 31, 2018 | Dec 31, 2017 |
|---|---|---|---|---|---|---|---|---|---|
| Profit or loss [abstract] | |||||||||
| Sales of goods | |||||||||
| Cost of sales | |||||||||
| Gross profit | |||||||||
| Operating expenses | |||||||||
| Administrative expenses | |||||||||
| Selling and distribution expenses | |||||||||
| Other operating expenses, net | |||||||||
| Impairment to retirement of property, plant and equipment | — | ||||||||
| Total operating expenses, net | |||||||||
| Operating profit | |||||||||
| Other income (expenses) | |||||||||
| Finance income | |||||||||
| Finance costs | |||||||||
| Net gain on derivative financial instruments recognized at fair value through profit or loss | — | ||||||||
| Gain (loss) from exchange difference, net | |||||||||
| Total other expenses, net | |||||||||
| Profit before income tax | |||||||||
| Income tax expense | |||||||||
| Profit for the year | |||||||||
| Earnings per share | |||||||||
| Basic income attributable to holders of common and investment shares of Cementos Pacasmayo S.A.A. (S/per share) (in Nuevos Soles per share) |