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Share-based Payment Arrangements - Summary of USISH's outstanding share options balance sheet (Detail) | 12 Months Ended |
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Dec. 31, 2022 ¥ / shares | Dec. 31, 2021 ¥ / shares | Dec. 31, 2022 $ / shares
USISH Option Plans [member] | Share options [Member] |  |  |
Disclosure of range of exercise prices of outstanding share options [Line Items] |  |  |
Range of Exercise Price Per Share | ¥ 15.5 | ¥ 15.5 |
Weighted average remaining contractual life of outstanding share options | 2 years 10 months 24 days | 3 years 10 months 24 days |
USISH Option Plans [member] | Stock option plans [Member] |  |  |
Disclosure of range of exercise prices of outstanding share options [Line Items] |  |  |
Range of Exercise Price Per Share | ¥ 12.4 | ¥ 12.7 |
Weighted average remaining contractual life of outstanding share options | 1 year 10 months 24 days | 2 years 10 months 24 days |
USISH Option Plans [member] | 2020 Share Options [Member] |  |  |
Disclosure of range of exercise prices of outstanding share options [Line Items] |  |  |
Range of Exercise Price Per Share | ¥ 20.9 | ¥ 21.2 |
Weighted average remaining contractual life of outstanding share options | 1 year 10 months 24 days | 2 years 10 months 24 days |
AMPI Option Plans [Member] | 2022 share options |  |  |
Disclosure of range of exercise prices of outstanding share options [Line Items] |  |  |
Range of Exercise Price Per Share | $ / shares |  |  | $ 30
Weighted average remaining contractual life of outstanding share options | 9 years 3 months 18 days |  |

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- Definition The exercise price of outstanding share options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 45 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45_d&doctype=Standard -URIDate 2022-03-24 + Details
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