Share-based compensation - Stock option valuation (Details) |
Apr. 30, 2019
¥ / shares
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Oct. 31, 2018
¥ / shares
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May 09, 2018
¥ / shares
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Apr. 30, 2018
¥ / shares
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Oct. 11, 2017
¥ / shares
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May 03, 2016
¥ / shares
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Jun. 29, 2015
¥ / shares
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Jan. 25, 2015
¥ / shares
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Dec. 31, 2025
¥ / shares
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Dec. 31, 2024
¥ / shares
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| Share-based compensation | ||||||||||
| Fair value of underlying ordinary shares (in dollars per share) | ¥ 16.65 | ¥ 26.74 | ¥ 38.14 | ¥ 41.33 | ¥ 30.29 | ¥ 16.98 | ¥ 9.66 | ¥ 4.91 | ||
| Exercise Price (in dollars per share) | ¥ 31.96 | ¥ 27.93 | ¥ 30.27 | ¥ 25.42 | ¥ 0.27 | ¥ 0.27 | ||||
| Expected Volatility per annum (as a percent) | 30.15% | 43.90% | 39.30% | 45.47% | 38.60% | 42.00% | 38.00% | 43.00% | ||
| Risk-Free Rate (as a percent) | 2.97% | 3.15% | 2.94% | 2.96% | 2.35% | 1.81% | 2.33% | 1.81% | ||
| Exercise Multiple | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | ||||
| Dividend Yield ( as a percent ) | ||||||||||
| Time to Maturity (Years) | 10 years | 10 years | 5 years | 10 years | 10 years | 10 years | 10 years | 10 years | ||
| Minimum | ||||||||||
| Share-based compensation | ||||||||||
| Exercise Price (in dollars per share) | ¥ 0.27 | ¥ 0.27 | ¥ 0.27 | ¥ 0.27 | ||||||
| Exercise Multiple | 5.58 | |||||||||
| Maximum | ||||||||||
| Share-based compensation | ||||||||||
| Exercise Price (in dollars per share) | ¥ 27.02 | ¥ 10.71 | ¥ 31.96 | ¥ 31.96 | ||||||
| Exercise Multiple | 38.33 |
| X | ||||||||||
- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The exercise multiple factor assumption that is used in valuing an option on its own shares. No definition available.
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