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Provision - Summary of Provision (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2020 USD ($)
Disclosure of other provisions [line items] |  |  |  |
Beginning balance | ¥ 269,078 | $ 42,561 | ¥ 218,031 | $ 34,487
Provision made | 296,986 | 46,975 | 349,303 | 55,250
Provision utilized | (299,397) | (47,357) | (295,940) | (46,810)
Provision reversed | (13,639) | (2,157) | (2,316) | (366)
Ending balance | 253,028 | $ 40,022 | 269,078 | $ 42,561
Product warranty provision [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Beginning balance | 255,439 |  | 215,715 |
Provision made | 292,157 |  | 335,664 |
Provision utilized | (299,397) |  | (295,940) |
Ending balance | 248,199 |  | 255,439 |
Provision for onerous contract [member[ |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Beginning balance | 13,639 |  | 2,316 |
Provision made | 4,829 |  | 13,639 |
Provision reversed | (13,639) |  | (2,316) |
Ending balance | ¥ 4,829 |  | ¥ 13,639 |

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- Definition The amount of provisions other than provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2021-01-01 -Paragraph 84 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_84_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_d&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount reversed for unused other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2021-01-01 -Paragraph 84 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_84_d&doctype=Standard -URIDate 2021-03-24 + Details
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