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Financial Assets At Amortized Cost - Disclosure of Carrying Amount of Financial Assets at Amortized Cost (Detail) - CNY (¥)
¥ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of carrying amount of financial assets at amortized cost [Line Items]      
Beginning balance ¥ 3,784,613    
Ending balance 4,716,448 ¥ 3,784,613  
Gross carrying amount [member]      
Disclosure of carrying amount of financial assets at amortized cost [Line Items]      
Beginning balance 5,123,589 7,735,834 ¥ 10,010,959
New financial assets originated or purchased 5,715,342 8,041,561 8,649,672
Write-offs (50,712) (26,345) (234,275)
Disposal in the current period   (226,843)  
Financial assets de-recognized and other adjustments in the current period (including repayments of financial assets) (4,193,433) (10,400,618) (10,690,522)
Ending balance 6,594,786 5,123,589 7,735,834
Gross carrying amount [member] | Stage 1 [member]      
Disclosure of carrying amount of financial assets at amortized cost [Line Items]      
Beginning balance 2,709,756 5,512,867 7,223,195
New financial assets originated or purchased 5,635,886 7,437,143 8,590,588
Transfers (363,927)    
Transfer — From stage 1 to stage 2 (363,927)    
Financial assets de-recognized and other adjustments in the current period (including repayments of financial assets) (3,822,562) (10,240,254) (10,300,916)
Ending balance 4,159,153 2,709,756 5,512,867
Gross carrying amount [member] | Stage 2 [member]      
Disclosure of carrying amount of financial assets at amortized cost [Line Items]      
Transfer — From stage 1 to stage 2 363,927    
Transfer — From stage 1 to stage 3 (363,927)    
Gross carrying amount [member] | Stage 3 [member]      
Disclosure of carrying amount of financial assets at amortized cost [Line Items]      
Beginning balance 1,865,241 2,115,235 2,655,132
Transfers 363,927    
Transfer — From stage 1 to stage 3 363,927    
Write-offs (38,858) (17,651) (221,754)
Disposal in the current period   (226,843)  
Financial assets de-recognized and other adjustments in the current period (including repayments of financial assets) (102,087) (5,500) (318,143)
Ending balance 2,088,223 1,865,241 2,115,235
Gross carrying amount [member] | POCI [Member]      
Disclosure of carrying amount of financial assets at amortized cost [Line Items]      
Beginning balance 548,592 107,732 132,632
New financial assets originated or purchased 79,456 604,418 59,084
Write-offs (11,854) (8,694) (12,521)
Financial assets de-recognized and other adjustments in the current period (including repayments of financial assets) (268,784) (154,864) (71,463)
Ending balance ¥ 347,410 ¥ 548,592 ¥ 107,732