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Cash At Bank And Restricted Cash - Summary of Detailed Information about Cash At Bank of Parent Company Explanatory (Detail) - CNY (¥)
¥ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of Detailed Information about Cash At Bank of Parent Company [Line Items]      
Cash at bank ¥ 43,882,127 ¥ 34,743,188 ¥ 24,158,568
Less: Provision for impairment losses 2,115 3,392 ¥ 185
Parent [member]      
Disclosure of Detailed Information about Cash At Bank of Parent Company [Line Items]      
Cash at bank 1,644,302 1,813,616  
Less: Provision for impairment losses 0 0  
Demand Deposits [Member]      
Disclosure of Detailed Information about Cash At Bank of Parent Company [Line Items]      
Cash at bank 26,524,195 22,355,054  
Demand Deposits [Member] | Parent [member]      
Disclosure of Detailed Information about Cash At Bank of Parent Company [Line Items]      
Cash at bank 1,644,302 1,653,163  
Demand Deposits [Member] | CURRENCYC N Y [Member] | Parent [member]      
Disclosure of Detailed Information about Cash At Bank of Parent Company [Line Items]      
Cash at bank 5,518 18,705  
Demand Deposits [Member] | CURRENCYU S D [Member] | Parent [member]      
Disclosure of Detailed Information about Cash At Bank of Parent Company [Line Items]      
Cash at bank 1,638,784 1,634,458  
Time Deposits [Member]      
Disclosure of Detailed Information about Cash At Bank of Parent Company [Line Items]      
Cash at bank 17,360,047 12,391,526  
Time Deposits [Member] | Parent [member]      
Disclosure of Detailed Information about Cash At Bank of Parent Company [Line Items]      
Cash at bank 0 160,453  
Time Deposits [Member] | CURRENCYC N Y [Member] | Parent [member]      
Disclosure of Detailed Information about Cash At Bank of Parent Company [Line Items]      
Cash at bank 0 160,453  
Time Deposits [Member] | CURRENCYU S D [Member] | Parent [member]      
Disclosure of Detailed Information about Cash At Bank of Parent Company [Line Items]      
Cash at bank ¥ 0 ¥ 0