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Share-based Payment Arrangements - Summary of Information About Restricted Shares (Detail) - USISH option plans [member] shares in Thousands | 12 Months Ended
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Dec. 31, 2022 shares ¥ / shares | Dec. 31, 2021 shares ¥ / shares | Dec. 31, 2020 shares ¥ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |
Balance at January 1 | shares | 3,565 | 5,547 | 6,156
Options granted | shares | 0 | 281 | 672
Options, expired | shares | (4) | 0 | 0
Options exercised | shares | (395) | (1,780) | (1,281)
Options forfeited | shares | (1,182) | (483) |
Balance at December 31 | shares | 1,984 | 3,565 | 5,547
Options exercisable, end of year | shares | 1,715 |  |
Fair value of options granted (RMB) | ¥ 0 | ¥ 11.78 | ¥ 18.55
Exercise Price Per Share, Begining | 10.2 | 12.2 | 13.3
Exercise Price Per Share, Options granted | 0 | 0 | 4.9
Exercise Price Per Share, Options expired | 0 | 0 | 0
Exercise Price Per Share, Options exercised | 0 | 12.7 | 13.2
Exercise Price Per Share, Options forfeited | 12.2 | 12.1 |
Exercise Price Per Share, Ending | 10.7 | 10.2 | 12.2
Exercise Price Per Share, Options exercisable, end of year | ¥ 12.4 |  |

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- Definition The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_47_b&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The number of other equity instruments (ie other than share options) exercisable in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The number of other equity instruments (ie other than share options) expired in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The number of other equity instruments (ie other than share options) forfeited in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The weighted average exercise price of other equity instruments (ie other than share options) forfeited in a share-based payment arrangement. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45&doctype=Standard -URIDate 2022-03-24 + Details
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