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Loans and borrowings - Summary of Loans and Borrowings (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 CNY (¥) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2021 USD ($)
Disclosure of detailed information about borrowings [line items] |  |  |
Non-current borrowings | ¥ 100,000 | ¥ 500,000 | $ 15,817
Current borrowings | ¥ 2,103,000 | ¥ 1,730,000 | $ 332,637
Non-current borrowings [member] | Renminbi [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Effective interest rate | 3.45% | 3.30% | 3.45%
Maturity | 2023 | 2022 |
Non-current borrowings | ¥ 100,000 | ¥ 500,000 | $ 15,817
Current borrowings [member] | Renminbi [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Maturity | 2022 | 2021 |
Current borrowings | ¥ 2,103,000 | ¥ 1,730,000 | $ 332,637
Current borrowings [member] | Renminbi [Member] | Bottom of range [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Effective interest rate | 1.10% | 1.80% | 1.10%
Current borrowings [member] | Renminbi [Member] | Top of range [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Effective interest rate | 3.85% | 4.05% | 3.85%

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- Definition The maturity of borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_7&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The non-current portion of non-current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 + Details
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