| Line Item | Dec 31, 2025 | Dec 31, 2024 | Dec 31, 2023 | Dec 31, 2022 | Dec 31, 2021 | Dec 31, 2018 | Dec 31, 2017 | Dec 31, 2016 | Dec 31, 2015 |
|---|---|---|---|---|---|---|---|---|---|
| Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income | |||||||||
| Interest expense from financial instruments measured at amortized cost | |||||||||
| Net interest income from financial instruments measured at fair value through profit or loss and other | |||||||||
| Net interest income | |||||||||
| Other net income from financial instruments measured at fair value through profit or loss | |||||||||
| Operating profit / (loss) before tax | |||||||||
| Net profit / (loss) | |||||||||
| Net profit / (loss) attributable to non-controlling interests | |||||||||
| Net profit / (loss) attributable to shareholders for basic EPS |