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v3.21.1

Leases - Additional Information (Detail) ¥ in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 CNY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CNY (¥)
Statement [line items] |  |  |
Cash outflows for leases | ¥ 51.9 | $ 8.0 | ¥ 65.6
Non-cash additions to right-of-use assets and lease liabilities | 15.3 | 2.4 | 11.5
Operating lease rental income | ¥ 13.3 | $ 2.1 | ¥ 11.9
Bottom of range [member] |  |  |
Statement [line items] |  |  |
Operating lease, term | 1 year | 1 year |
Operating lease term of contract | 1 year | 1 year |
Top of range [member] |  |  |
Statement [line items] |  |  |
Operating lease, term | 15 years | 15 years |
Operating lease term of contract | 6 years | 6 years |

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- Definition Non cash additions to right of use assets and lease liabilities. + References No definition available. + Details
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- Definition Operating lease, term of contract. + References No definition available. + Details
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- Definition The cash outflow for leases. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 53 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_53_g&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of operating lease income. Operating lease is a lease that does not transfer substantially all the risks and rewards incidental to ownership of an underlying asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 90 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_90_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Details
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