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Financial Instruments And Risks - Summary of Group's Maximum Exposure To Structured Entities (Detail) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Unconsolidated Structured Products Managed By Third Parties [Member]    
Disclosure Of Maximum Exposure To Consolidated Structured Entities [Line Items]    
Carrying amount of investment in structured entities ¥ 8,661,387 ¥ 10,367,052
Group's maximum exposure 8,661,387 10,367,052
Unconsolidated Structured Products Managed By Affiliated Entities [Member]    
Disclosure Of Maximum Exposure To Consolidated Structured Entities [Line Items]    
Carrying amount of investment in structured entities 12,219,226 19,352,780
Group's maximum exposure 12,219,226 19,409,204
Unconsolidated Structured Products Serviced By the Group [Member]    
Disclosure Of Maximum Exposure To Consolidated Structured Entities [Line Items]    
Group's maximum exposure 1,428,320 711,058
Size ¥ 18,178,437 ¥ 57,777,571