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Provisions - Summary of Provisions (Detail)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2023
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Disclosure of other provisions [line items]        
Beginning balance ¥ 220,114 $ 30,986 ¥ 253,028 $ 35,620
Provision made 414,021 58,283 317,076 44,636
Provision utilized (375,910) (52,918) (345,161) (48,590)
Provision reversed     (4,829) (680)
Disposal of a subsidiary (2,145) (302)    
Ending balance 256,080 $ 36,049 220,114 $ 30,986
Product warranty provision [member]        
Disclosure of other provisions [line items]        
Beginning balance 220,114   248,199  
Provision made 414,021   317,076  
Provision utilized (375,910)   (345,161)  
Provision reversed     0  
Disposal of a subsidiary (2,145)      
Ending balance 256,080   220,114  
Provision for onerous contract [member]        
Disclosure of other provisions [line items]        
Beginning balance 0   4,829  
Provision made 0   0  
Provision utilized 0   0  
Provision reversed     (4,829)  
Disposal of a subsidiary 0      
Ending balance ¥ 0   ¥ 0