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Financial Instruments And Risks - Summary of Credit Risk Exposure Of The Financial Instruments Under The Scope of Expected Credit Loss (Detail) - CNY (¥)
¥ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables ¥ 216,163,093 ¥ 218,756,723
Stage One [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables 212,727,811 216,363,013
Stage Two [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables 2,763,586 1,263,965
Stage Three [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables 355,414 627,723
Purchased or originated creditimpaired financial assets [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables 316,282 502,022
On Balance Sheet Exposure [Member] | Financial assets at amortised cost, class [member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables 4,716,448 3,784,613
On Balance Sheet Exposure [Member] | Financial assets at amortised cost, class [member] | Stage One [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables 4,118,635 2,697,852
On Balance Sheet Exposure [Member] | Financial assets at amortised cost, class [member] | Stage Three [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables 281,531 584,739
On Balance Sheet Exposure [Member] | Financial assets at amortised cost, class [member] | Purchased or originated creditimpaired financial assets [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables 316,282 502,022
On Balance Sheet Exposure [Member] | Loans to consumers [member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables 211,446,645 214,972,110
On Balance Sheet Exposure [Member] | Loans to consumers [member] | Stage One [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables 208,609,176 213,665,161
On Balance Sheet Exposure [Member] | Loans to consumers [member] | Stage Two [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables 2,763,586 1,263,965
On Balance Sheet Exposure [Member] | Loans to consumers [member] | Stage Three [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Maximum exposure to credit risk of loans or receivables 73,883 42,984
Off Balance Sheet Exposure [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Financing guarantee contracts 68,502,938 64,731,369
Off Balance Sheet Exposure [Member] | Financial guarantee contracts [member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Financing guarantee contracts 68,502,938 64,731,369
Off Balance Sheet Exposure [Member] | Financial guarantee contracts [member] | Stage One [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Financing guarantee contracts 67,011,692 64,416,918
Off Balance Sheet Exposure [Member] | Financial guarantee contracts [member] | Stage Two [Member]    
Disclosure Details Of Maximum Credit Risk Exposure Before Collateral Received [Line Items]    
Financing guarantee contracts ¥ 1,491,246 ¥ 314,451