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Income Tax Expense - Additional Information (Detail) ¥ in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 CNY (¥) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 | Dec. 31, 2020 USD ($)
Statement [line items] |  |  |  |
Applicable income tax rate | 15.00% | 15.00% | 15.00% |
Percentage of withholding tax | 10.00% |  |  |
Deferred tax liability for withholding tax payable | ¥ 112.5 | ¥ 106.9 |  | $ 17.4
Unrecognized deferred tax liability relating to undistributed earnings | ¥ 236.4 | ¥ 253.5 |  | $ 36.5
PRC [member] |  |  |  |
Statement [line items] |  |  |  |
Unrecognized tax losses expiration period for subsidiaries that have a history of losses | 5 years |  |  |
Malaysia [member] |  |  |  |
Statement [line items] |  |  |  |
Unrecognized tax losses expiration period for subsidiaries that have a history of losses | 7 years |  |  |

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- Definition Deferred tax liabilities not recognized related to temporary differences associated with undistributed earnings of subsidiaries. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The applicable income tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2020-01-01 + Details
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- Details
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- Details
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