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Share-based compensation - Share options with employee termination compensation (Details) - shares	1 Months Ended	12 Months Ended				13 Months Ended
	May 31, 2020	Dec. 31, 2023	Jan. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jul. 31, 2023
Share-based compensation
Number of options granted		80,907,443		56,222,658	18,200,000
Share options with employee termination compensation with service condition only
Share-based compensation
Number of options granted	137,877,968
Vesting period	19 months
Share options with employee termination compensation with both service and performance condition
Share-based compensation
Number of options granted			41,217,213			12,134,888
Vesting period						3 years
Vesting percentage						33.33%

X

- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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.

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