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Financial Instruments And Risks - Summary of Changes of ECL Impairment Provision On Loans To Customers And Financing Guarantee Liabilities Related To ECL Assuming The Financial Assets (Detail) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items]    
Difference-amount ¥ (553,099) ¥ (196,337)
Difference-ratio (10.00%) (13.00%)
Assumption Of Reclassification Of Financial Instruments From Stage Two To Stage One [Member]    
Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items]    
Total ECL and financing guarantee liabilities ¥ 4,897,881 ¥ 1,541,542
Recognised In The Balance Sheet [Member]    
Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items]    
Total ECL and financing guarantee liabilities ¥ 5,450,980 ¥ 1,737,879