Financial Instruments And Risks - Summary of Credit Exposure of The Group (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of credit risk exposure [line items]
Cash at bank	¥ 43,882,127	¥ 34,743,188	¥ 24,158,568
Restricted cash	26,508,631	30,453,539
Financial assets at fair value through profit or loss	29,089,447	31,023,211
Financial assets at amortized cost	4,716,448	3,784,613
Financial assets purchased under reverse repurchase agreements	0	5,527,177
Accounts and other receivables and contract assets	15,758,135	22,344,773
Loans to customers	211,446,645	214,972,110
On Balance Sheet Exposure [Member]
Disclosure of credit risk exposure [line items]
Cash at bank	43,882,127	34,743,188
Restricted cash	26,508,631	30,453,539
Financial assets at fair value through profit or loss	29,089,447	31,023,211
Financial assets at amortized cost	4,716,448	3,784,613
Financial assets purchased under reverse repurchase agreements	0	5,527,177
Accounts and other receivables and contract assets	15,758,135	22,344,773
Loans to customers	211,446,645	214,972,110
Total financial assets	331,401,433	342,848,611
Off Balance Sheet Exposure [Member]
Disclosure of credit risk exposure [line items]
Financing guarantee contracts	¥ 68,502,938	¥ 64,731,369

The amount of cash balances held at banks.

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The amount of the exposure to credit risk on loan commitments and financial guarantee contracts. [Refer: Loan commitments [member]; Financial guarantee contracts [member]; Credit risk [member]]

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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The amount of financial assets at amortised cost. The amortised cost is the amount at which financial assets are measured at initial recognition minus principal repayments, plus or minus the cumulative amortisation using the effective interest method of any difference between that initial amount and the maturity amount, and adjusted for any impairment. [Refer: Financial assets]

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The amount of financial assets that are measured at fair value and for which gains (losses) are recognised in profit or loss. A financial asset shall be measured at fair value through profit or loss unless it is measured at amortised cost or at fair value through other comprehensive income. A gain (loss) on a financial asset measured at fair value shall be recognised in profit or loss unless it is part of a hedging relationship, it is an investment in an equity instrument for which the entity has elected to present gains and losses in other comprehensive income or it is a financial asset measured at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets]

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The amount of loans and advances the entity has made to customers.

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The amount of instruments purchased for resale in reverse repurchase agreements and cash collateral on securities borrowed. [Refer: Repurchase agreements and cash collateral on securities lent]

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The amount of trade receivables and other receivables. [Refer: Trade receivables; Other receivables]

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