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Financial Instruments And Risks - Additional Information (Detail)
¥ in Millions
12 Months Ended
Dec. 31, 2021
CNY (¥)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2020
CNY (¥)
Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items]      
Expected credit loss rate 7.12% 12.15%  
Bottom of range [member] | Discount rate, measurement input [member] | Unlisted Securities at Fair Value Through Profit or Loss [Member]      
Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items]      
Significant unobservable input, assets 6.8 6.8 6.8
Top of range [member] | Discount rate, measurement input [member] | Unlisted Securities at Fair Value Through Profit or Loss [Member]      
Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items]      
Significant unobservable input, assets 9.5 9.5 9.5
Wealth Management Products Investments [Member]      
Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items]      
Transfers into Level 3 of fair value hierarchy, assets ¥ 1,035.6    
Increase In Upside Scenario [Member]      
Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items]      
Expected credit loss rate     10.00%
Cumulative expected credit loss estimated decrease in impairment provision ¥ 15.0 ¥ 62.0 ¥ 5.0
Reduction In Downside Scenario [Member]      
Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items]      
Expected credit loss rate 10.00%    
Reduction In Base Case Scenario [Member]      
Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items]      
Expected credit loss rate 10.00%    
Cumulative expected credit loss estimated increase in impairment provision ¥ 32.0    
Increase In Downside Scenario [Member]      
Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items]      
Expected credit loss rate     10.00%
Cumulative expected credit loss estimated increase in impairment provision   ¥ 123.0 ¥ 6.0