Earnings Per Share - Summary of Diluted Earnings Per Share (Detail) - CNY (¥) ¥ / shares in Units, ¥ in Thousands, shares in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Weighted average number of ordinary shares
Weighted average number of ordinary shares in issue (in '000)	1,733,378	1,395,149	1,146,175
Assumed exercise of share options and vesting of PSUs (in '000)	0	0	987
Weighted average number of ordinary share for diluted earnings per share	1,733,378	1,395,149	1,147,162
Earnings/(loss)
Profit/(loss) attributable to owners of the Company	¥ (2,097,678)	¥ (3,870,620)	¥ 809,624
Net profit/(loss) used to determine diluted earnings per share	¥ (2,097,678)	¥ (3,870,620)	¥ 809,624
Ordinary shares [member]
Weighted average number of ordinary shares
Diluted earnings/(loss) (in RMB)	¥ (1.21)	¥ (2.77)	¥ 0.71
American depositary shares [member]
Weighted average number of ordinary shares
Diluted earnings/(loss) (in RMB)	¥ (2.42)	¥ (5.54)	¥ 1.42

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The potential dilutive effect on the weighted average number of ordinary shares that relate to the assumed exercise of the entity's share options.

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The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]

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The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

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Net profit loss used to determine diluted earnings per share.

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