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Convertible Promissory Note Payable - Summary of Convertible Promissory Note Payable (Detail) - CNY (¥)
¥ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of Convertible Promissory Note Payable [Line Items]      
Beginning balance ¥ 10,669,498    
Beginning balance 10,669,498    
Interest paid (1,213,186) ¥ (867,715) ¥ (1,151,421)
Ending balance 5,164,139 10,669,498  
Ending balance 5,164,139 10,669,498  
Convertible Promissory Note Payable [member] | Liability [Member]      
Disclosure of Convertible Promissory Note Payable [Line Items]      
Beginning balance 10,669,498 10,117,188 10,014,377
Interest accrued at effective interest rate 1,045,611 893,001 883,759
Interest paid (115,879) (100,937) (92,981)
Redemption And Extension Of Convertible Promissory Notes (7,444,513)    
Exchange differences 1,009,422 (239,754) (687,967)
Ending balance 5,164,139 10,669,498 10,117,188
Convertible Promissory Note Payable [member] | Equity [member]      
Disclosure of Convertible Promissory Note Payable [Line Items]      
Beginning balance 5,744,955 5,744,955 5,744,955
Redemption And Extension Of Convertible Promissory Notes (5,584,770)    
Ending balance ¥ 160,185 ¥ 5,744,955 ¥ 5,744,955