| 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 | Dec 31, 2016 | Dec 31, 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Profit or loss [abstract] | |||||||||||
| Interest and similar income | |||||||||||
| Interest expense | |||||||||||
| Net interest income | |||||||||||
| Provision for credit losses | |||||||||||
| Net interest income after provision for credit losses | |||||||||||
| Net commission and fee income | |||||||||||
| Net gains (losses) on financial assets/liabilities at fair value through profit or loss | |||||||||||
| Net gains (losses) from derecognition of financial assets measured at amortized cost | |||||||||||
| Net gains (losses) on financial assets at fair value through other comprehensive income | |||||||||||
| Net income (loss) from equity method investments | |||||||||||
| Profit (loss) before income taxes | |||||||||||
| Profit (loss) | |||||||||||
| Profit (loss) attributable to noncontrolling interests | |||||||||||
| Profit (loss), attributable to owners of parent |