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Intangible Assets - Summary of Intangible Assets (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 CNY (¥)
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | ¥ 1,951,133 |  |  |
Impairment loss | 0 |  | ¥ 0 |
Amortization | 201,420 | $ 28,077 | 109,913 | ¥ 64,939
Intangible assets and goodwill ending balance | 1,922,854 | 268,039 | 1,951,133 |
Technology Know-how [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 1,084,627 |  |  |
Intangible assets and goodwill ending balance | 1,000,836 | 139,513 | 1,084,627 |
Development costs [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 484,059 |  |  |
Intangible assets and goodwill ending balance | 539,571 | 75,214 | 484,059 |
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 | 29,641 | 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 | $ 23,671 | 169,811 |
Cost [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 2,299,341 |  | 2,113,119 |
Addition | 204,271 |  | 186,222 |
Intangible assets and goodwill ending balance | 2,503,612 |  | 2,299,341 | 2,113,119
Cost [member] | Technology Know-how [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 1,427,160 |  | 672,753 |
Transfer | 117,629 |  | 754,407 |
Intangible assets and goodwill ending balance | 1,544,789 |  | 1,427,160 | 672,753
Cost [member] | Development costs [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | 484,059 |  | 1,052,244 |
Addition | 204,271 |  | 186,222 |
Transfer | (117,629) |  | (754,407) |
Intangible assets and goodwill ending balance | 570,701 |  | 484,059 | 1,052,244
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 amortization [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | (221,508) |  | (111,595) |
Amortization | 201,420 |  | 109,913 |
Intangible assets and goodwill ending balance | (422,928) |  | (221,508) | (111,595)
Accumulated amortization [member] | Technology Know-how [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | (215,833) |  | (105,920) |
Amortization | 201,420 |  | 109,913 |
Intangible assets and goodwill ending balance | (417,253) |  | (215,833) | (105,920)
Accumulated amortization [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)
Accumulated impairment [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | (126,700) |  |  |
Impairment loss | (31,130) |  |  |
Intangible assets and goodwill ending balance | (157,830) |  | (126,700) |
Accumulated impairment [member] | Technology Know-how [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets and goodwill beginning balance | (126,700) |  |  |
Intangible assets and goodwill ending balance | (126,700) |  | ¥ (126,700) |
Accumulated impairment [member] | Development costs [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Impairment loss | (31,130) |  |  |
Intangible assets and goodwill ending balance | ¥ (31,130) |  |  |

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