Share-based Payment - Summary of Employee Share Options (Detail) |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2024
¥ / shares
|
Dec. 31, 2024
shares
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Dec. 31, 2024
$ / shares
|
Dec. 31, 2024
Years
|
Dec. 31, 2023
¥ / shares
|
Dec. 31, 2023
shares
|
Dec. 31, 2023
$ / shares
|
Dec. 31, 2023
Years
|
Dec. 31, 2022
shares
Years
¥ / shares
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Dec. 31, 2022
shares
Years
$ / shares
|
|
| Disclosure of terms and conditions of share-based payment arrangement [line items] | ||||||||||
| Outstanding, beginning of year | ¥ / shares | ¥ 87.58 | ¥ 86.62 | ¥ 76.12 | |||||||
| Exercised during the year | ¥ / shares | 8 | 8 | 20.28 | |||||||
| Forfeited and other change during the year | ¥ / shares | 89.2 | 98.34 | ||||||||
| Outstanding, end of year | ¥ / shares | 88.9 | 87.58 | ¥ 86.62 | |||||||
| Outstanding, beginning of year | shares | 13,394,000 | 15,000,000 | 17,821,000 | 17,821,000 | ||||||
| Granted | shares | 0 | 0 | 0 | 0 | ||||||
| Exercised during the year | shares | (247,000) | (181,000) | (2,821,000) | (2,821,000) | ||||||
| Forfeited and other change during the year | (2,437,000) | (614) | (1,425,000) | (119) | (325) | (325) | ||||
| Outstanding, end of year | shares | 10,710,000 | 13,394,000 | 15,000,000 | 15,000,000 | ||||||
| Performance Share Units | ||||||||||
| Disclosure of terms and conditions of share-based payment arrangement [line items] | ||||||||||
| Outstanding, beginning of year | ¥ / shares | 50.48 | 83.73 | ¥ 109.47 | |||||||
| Granted | ¥ / shares | 8.9 | 60.78 | ||||||||
| Exercised during the year | ¥ / shares | 61.44 | 431.02 | 112.47 | |||||||
| Forfeited and other change during the year | $ / shares | $ 39.95 | $ 147.31 | $ 286.29 | |||||||
| Outstanding, end of year | ¥ / shares | ¥ 30.46 | ¥ 50.48 | ¥ 83.73 | |||||||
| Outstanding, beginning of year | shares | 2,096,000 | 2,355,000 | 3,042,000 | 3,042,000 | ||||||
| Granted | shares | 32,000 | 40,000 | 40,000 | |||||||
| Exercised during the year | shares | (635,000) | (172,000) | (402,000) | (402,000) | ||||||
| Outstanding, end of year | shares | 847,000 | 2,096,000 | 2,355,000 | 2,355,000 | ||||||