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Intangible Assets - Summary of Intangible Assets (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2019 CNY (¥)
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | ¥ 1,483,968 |  |  |
Amortization | 38,957 | $ 6,162 | ¥ 1,012 | ¥ 1,012
Intangible assets and goodwill ending balance | 1,758,582 | 278,160 | 1,483,968 |
Technology Know-how [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 8,098 |  |  |
Intangible assets and goodwill ending balance | 383,845 | 60,714 | 8,098 |
Development costs [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 1,093,423 |  |  |
Intangible assets and goodwill ending balance | 992,290 | 156,953 | 1,093,423 |
Goodwill [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 212,636 |  |  |
Intangible assets and goodwill ending balance | 212,636 | 33,633 | 212,636 |
Trademarks [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 169,811 |  |  |
Intangible assets and goodwill ending balance | 169,811 | $ 26,860 | 169,811 |
Cost [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 1,618,367 |  | 1,087,531 |
Addition | 313,571 |  | 530,836 |
Intangible assets and goodwill ending balance | 1,931,938 |  | 1,618,367 | 1,087,531
Cost [member] | Technology Know-how [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 136,822 |  | 136,822 |
Transfer | 414,704 |  |  |
Intangible assets and goodwill ending balance | 551,526 |  | 136,822 | 136,822
Cost [member] | Development costs [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 1,093,423 |  | 562,587 |
Addition | 313,571 |  | 530,836 |
Transfer | (414,704) |  |  |
Intangible assets and goodwill ending balance | 992,290 |  | 1,093,423 | 562,587
Cost [member] | Goodwill [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 218,311 |  | 218,311 |
Intangible assets and goodwill ending balance | 218,311 |  | 218,311 | 218,311
Cost [member] | Trademarks [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 169,811 |  | 169,811 |
Intangible assets and goodwill ending balance | 169,811 |  | 169,811 | 169,811
Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | (134,399) |  | (133,387) |
Amortization | 38,957 |  | 1,012 |
Intangible assets and goodwill ending balance | (173,356) |  | (134,399) | (133,387)
Accumulated depreciation, amortisation and impairment [member] | Technology Know-how [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | (128,724) |  | (127,712) |
Amortization | 38,957 |  | 1,012 |
Intangible assets and goodwill ending balance | (167,681) |  | (128,724) | (127,712)
Accumulated depreciation, amortisation and impairment [member] | Goodwill [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | (5,675) |  | (5,675) |
Intangible assets and goodwill ending balance | ¥ (5,675) |  | ¥ (5,675) | ¥ (5,675)

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