Fair value of financial assets and liabilities - Valuation methods of financial assets and liabilities measured at fair value and classified into Level 3 and significant but unobservable inputs (Details)
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12 Months Ended |
Dec. 31, 2025 |
Dec. 31, 2024 |
| Debt securities | LSMC(Hull-White) | Volatility |
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
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| Impact of changes in significant unobservable inputs on fair value measurement |
Variation of fair value increases as volatility increases.
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Variation of fair value increases as volatility increases.
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| Debt securities | LSMC(Hull-White) | Volatility | Bottom of range |
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|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
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| Significant unobservable input, assets |
0.2345
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0.2809
|
| Debt securities | LSMC(Hull-White) | Volatility | Top of range |
|
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
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| Significant unobservable input, assets |
0.3748
|
0.8835
|
| Loans | DCF model | Discount rate |
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
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| Impact of changes in significant unobservable inputs on fair value measurement |
Fair value increases as discount rate decreases.
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Fair value increases as discount rate decreases.
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| Loans | DCF model | Discount rate | Bottom of range |
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
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| Significant unobservable input, assets |
0.007
|
0.0417
|
| Loans | DCF model | Discount rate | Top of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, assets |
0.0526
|
0.0598
|
| Equity related derivative assets | Option valuation model and others | Discount rate |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
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| Significant unobservable input, assets |
0.1688
|
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| Impact of changes in significant unobservable inputs on fair value measurement |
Fair value increases as discount rate decreases.
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Fair value increases as discount rate decreases.
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| Equity related derivative assets | Option valuation model and others | Discount rate | Bottom of range |
|
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, assets |
|
0.0394
|
| Equity related derivative assets | Option valuation model and others | Discount rate | Top of range |
|
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, assets |
|
0.1962
|
| Equity related derivative assets | Option valuation model and others | Correlation coefficient |
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
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| Impact of changes in significant unobservable inputs on fair value measurement |
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Variation of fair value increases as correlation coefficient increases.
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| Equity related derivative assets | Option valuation model and others | Correlation coefficient | Bottom of range |
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
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| Significant unobservable input, assets |
|
0.29
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| Equity related derivative assets | Option valuation model and others | Correlation coefficient | Top of range |
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, assets |
|
0.65
|
| Equity related derivative assets | Option valuation model and others | Stock prices, Volatility of underlying asset |
|
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
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| Significant unobservable input, assets |
0.2255
|
0.2571
|
| Impact of changes in significant unobservable inputs on fair value measurement |
Variation of fair value increases as stock price and volatility increases.
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Variation of fair value increases as volatility and stock price increases.
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| Equity related derivative assets | Option valuation model and others | Liquidation value |
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
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| Significant unobservable input, assets |
0
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| Impact of changes in significant unobservable inputs on fair value measurement |
Fair value increases as terminal growth rate increases.
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| Equity related derivative assets | Option valuation model and others | Terminal growth rate |
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
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| Significant unobservable input, assets |
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0
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| Impact of changes in significant unobservable inputs on fair value measurement |
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Fair value increases as terminal growth rate increases.
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| Equity securities, capital contributions, and beneficiary certificates | Stock prices, Volatility of underlying asset |
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Impact of changes in significant unobservable inputs on fair value measurement |
Variation of fair value increases as stock price and volatility of underlying asset increases.
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| Equity securities, capital contributions, and beneficiary certificates | Stock prices, Volatility of underlying asset | Bottom of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.1491
|
|
| Equity securities, capital contributions, and beneficiary certificates | Stock prices, Volatility of underlying asset | Top of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.3434
|
|
| Equity securities, capital contributions, and beneficiary certificates | LSMC(Hull-White) | Volatility |
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
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| Significant unobservable input, liabilities |
0.0056
|
|
| Impact of changes in significant unobservable inputs on fair value measurement |
Variation of fair value increases as volatility increases.
|
|
| Equity securities, capital contributions, and beneficiary certificates | LSMC(Hull-White) | Discount rate |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Impact of changes in significant unobservable inputs on fair value measurement |
Fair value increases as discount rate decreases.
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Fair value increases as discount rate decreases.
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| Equity securities, capital contributions, and beneficiary certificates | LSMC(Hull-White) | Discount rate | Bottom of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.0383
|
0.0645
|
| Equity securities, capital contributions, and beneficiary certificates | LSMC(Hull-White) | Discount rate | Top of range |
|
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.061
|
0.1556
|
| Equity securities, capital contributions, and beneficiary certificates | LSMC(Hull-White) | Volatility of stock |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
|
0.293
|
| Impact of changes in significant unobservable inputs on fair value measurement |
|
Variation of fair value increases as volatility increases.
|
| Equity securities, capital contributions, and beneficiary certificates | Binomial Tree | Stock prices, Volatility of underlying asset |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Impact of changes in significant unobservable inputs on fair value measurement |
|
Variation of fair value increases as volatility of underlying asset and stock price increases.
|
| Equity securities, capital contributions, and beneficiary certificates | Binomial Tree | Stock prices, Volatility of underlying asset | Bottom of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
|
0.1876
|
| Equity securities, capital contributions, and beneficiary certificates | Binomial Tree | Stock prices, Volatility of underlying asset | Top of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
|
0.3637
|
| Equity securities, capital contributions, and beneficiary certificates | Binomial Tree | Volatility of stock |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Impact of changes in significant unobservable inputs on fair value measurement |
Variation of fair value increases as volatility of stock increases.
|
|
| Equity securities, capital contributions, and beneficiary certificates | Binomial Tree | Volatility of stock | Bottom of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.2019
|
|
| Equity securities, capital contributions, and beneficiary certificates | Binomial Tree | Volatility of stock | Top of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.3151
|
|
| Equity securities, capital contributions, and beneficiary certificates | DCF model and others | Discount rate |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Impact of changes in significant unobservable inputs on fair value measurement |
Fair value increases as discount rate decreases.
|
Fair value increases as discount rate decreases.
|
| Equity securities, capital contributions, and beneficiary certificates | DCF model and others | Discount rate | Bottom of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.0277
|
0.0476
|
| Equity securities, capital contributions, and beneficiary certificates | DCF model and others | Discount rate | Top of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.1905
|
0.1984
|
| Equity securities, capital contributions, and beneficiary certificates | DCF model and others | Liquidation value |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Impact of changes in significant unobservable inputs on fair value measurement |
Fair value increases as liquidation value increases.
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Fair value increases as liquidation value increases.
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| Equity securities, capital contributions, and beneficiary certificates | DCF model and others | Liquidation value | Bottom of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
(0.01)
|
(0.01)
|
| Equity securities, capital contributions, and beneficiary certificates | DCF model and others | Liquidation value | Top of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.1241
|
0.01
|
| Equity securities, capital contributions, and beneficiary certificates | DCF model and others | Terminal growth rate |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Impact of changes in significant unobservable inputs on fair value measurement |
Fair value increases as terminal growth rate increases.
|
Fair value increases as terminal growth rate increases.
|
| Equity securities, capital contributions, and beneficiary certificates | DCF model and others | Terminal growth rate | Bottom of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0
|
0
|
| Equity securities, capital contributions, and beneficiary certificates | DCF model and others | Terminal growth rate | Top of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.01
|
0.01
|
| Equity securities, capital contributions, and beneficiary certificates | DCF model and others | Interest rate |
|
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
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| Impact of changes in significant unobservable inputs on fair value measurement |
Fair value increases as interest rate decreases.
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| Equity securities, capital contributions, and beneficiary certificates | DCF model and others | Interest rate | Bottom of range |
|
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| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.0238
|
|
| Equity securities, capital contributions, and beneficiary certificates | DCF model and others | Interest rate | Top of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.0342
|
|
| Equity securities, capital contributions, and beneficiary certificates | Market Value Approach | Stock price |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Impact of changes in significant unobservable inputs on fair value measurement |
Variation of fair value increases as stock price volatility increases.
|
|
| Equity securities, capital contributions, and beneficiary certificates | Market Value Approach | Stock price | Bottom of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.2786
|
|
| Equity securities, capital contributions, and beneficiary certificates | Market Value Approach | Stock price | Top of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.3151
|
|
| Others | Binomial Tree | Stock prices, Volatility of underlying asset |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Impact of changes in significant unobservable inputs on fair value measurement |
Variation of fair value increases as volatility of underlying asset and stock price increases.
|
Variation of fair value increases as volatility of underlying asset and stock price increases.
|
| Others | Binomial Tree | Stock prices, Volatility of underlying asset | Bottom of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.1491
|
0.1836
|
| Others | Binomial Tree | Stock prices, Volatility of underlying asset | Top of range |
|
|
| Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Line Items] |
|
|
| Significant unobservable input, liabilities |
0.4244
|
0.369
|