| 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 |
|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | |||||||||
| Interest income | |||||||||
| Financial assets at FVTPL | |||||||||
| Financial assets at FVTOCI | |||||||||
| Financial assets at amortized cost | |||||||||
| Insurance finance | |||||||||
| Interest expense | |||||||||
| Financial liabilities at amortized cost | |||||||||
| Total | |||||||||
| Fees and commissions income | |||||||||
| Fees and commissions expense | |||||||||
| Net fees and commissions income | |||||||||
| Dividend income | |||||||||
| Insurance income | |||||||||
| Insurance | |||||||||
| Reinsurance | |||||||||
| Insurance service expense | |||||||||
| Insurance service | |||||||||
| Reinsurance service | |||||||||
| Net insurance income | |||||||||
| Other insurance finance income and expenses | |||||||||
| Net gain on financial instruments at FVTPL | |||||||||
| Net gain (loss) on financial assets at FVTOCI | |||||||||
| Net gain arising on financial assets at amortized cost | |||||||||
| Impairment losses due to credit loss | |||||||||
| General and administrative expenses | |||||||||
| Other net operating expense | |||||||||
| Operating income | |||||||||
| Share of gain of joint ventures and associates | |||||||||
| Other non-operating income (expense) | |||||||||
| Non-operating income (expense) | |||||||||
| Net income before income tax expense | |||||||||
| Net income | |||||||||
| Net income attributable to: | |||||||||
| Net income attributable to shareholders | |||||||||
| Net income attributable to non-controlling interests | |||||||||
| Total comprehensive income attributable to: | |||||||||
| Comprehensive income attributable to shareholders | |||||||||
| Comprehensive income attributable to non-controlling interests |