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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)