Earnings Per Share - Summary of Diluted Earnings Per Share (Detail) - CNY (¥) ¥ / shares in Units, ¥ in Thousands, shares in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Weighted average number of ordinary shares
Weighted average number of ordinary shares in issue	1,181,850,488	1,104,155,407	1,086,698,914
Assumed conversion of convertible instruments	169,736,565	21,873,817
Assumed exercise of share options and vesting of PSUs	8,164,723
Weighted average number of ordinary share for diluted earnings per share	1,359,751,776	1,126,029,224	1,086,698,914
Earnings
Profit attributable to owners of the Company	¥ 16,804,380	¥ 12,354,114	¥ 13,332,431
Interest expense on convertible instruments, net of tax	1,388,080	147,293
Net profit used to determine diluted earnings per share	¥ 18,192,460	¥ 12,501,407	¥ 13,332,431
Ordinary shares [member]
Weighted average number of ordinary shares
Diluted earnings (in RMB)	¥ 13.38	¥ 11.10	¥ 12.27
American depositary shares [member]
Weighted average number of ordinary shares
Diluted earnings (in RMB)	¥ 6.69	¥ 5.55

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 number of dilutive potential ordinary shares that relate to the assumed conversion of the entity's convertible instruments.

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The number of dilutive potential 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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Interest expense on convertible instruments, net of tax.

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