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Convertible Promissory Note Payable - Summary of Convertible Promissory Note Payable (Parenthetical) (Detail)
¥ in Millions, $ in Millions
 12 Months Ended
Dec. 06, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
CNY (¥)
Disclosure of Convertible Promissory Note Payable [Line Items]      
Borrowings, interest rate     125.00%
Third Amendment and Supplemental Agreement [Member]      
Disclosure of Convertible Promissory Note Payable [Line Items]      
Increase In Finance Costs ¥ 174    
Share Premium 6,210    
Decrease In Other Reserves ¥ 5,585    
Payment Of Covertible Promissory Note | $   $ 536  
Third Amendment and Supplemental Agreement [Member] | Ping An Group And An ke Technology [Member]      
Disclosure of Convertible Promissory Note Payable [Line Items]      
Payment Of Covertible Promissory Note | $   $ 1,071  
Borrowings, interest rate     6.50%
Consideration Of Convertible Promissory Note Unpaid     ¥ 3,746