The description of inputs used in the fair value measurement of assets. Inputs are the assumptions that market participants would use when pricing the asset, including assumptions about risk such as the risk inherent in a particular valuation technique used to measure fair value (such as a pricing model) and the risk inherent in the inputs to the valuation technique.

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The description of the interrelationships between unobservable inputs and of how they might magnify or mitigate the effect of changes in the unobservable inputs on the fair value measurement of assets. [Refer: Disclosure of significant unobservable inputs used in fair value measurement of assets [text block]]

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The description of the valuation techniques (for example, the market approach, cost approach and income approach) used for the fair value measurement of assets. [Refer: Valuation techniques [member]; Cost approach [member]; Income approach [member]; Market approach [member]]

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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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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Risk Management - Summary of Information About Significant Unobservable Inputs Used for Assets at Fair Value Classified as Level 3 (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value of assets	¥ 4,862,767	¥ 4,516,551
Fair value [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value of assets	1,944,764	1,615,779
Fair value [member] \| Significant unobservable inputs Level 3 [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value of assets	396,153	349,127	¥ 293,924
Fair value [member] \| Significant unobservable inputs Level 3 [member] \| Comparable companies approach [member] \| Equity securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value of assets	¥ 29,597	28,245
Valuation techniques used in fair value measurement assets	Comparable companies approach
Inputs used in fair value measurement assets	Discounts for lack of marketability
Relationships between fair value assets and unobservable inputs	The fair value is inversely related to the discounts for lack of marketability
Fair value [member] \| Significant unobservable inputs Level 3 [member] \| Net asset value method [member] \| Equity securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value of assets	¥ 41,904	36,556
Valuation techniques used in fair value measurement assets	Net asset value method
Inputs used in fair value measurement assets	N/A
Relationships between fair value assets and unobservable inputs	N/A
Fair value [member] \| Significant unobservable inputs Level 3 [member] \| Discounted cash flow method [member] \| Equity securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value of assets	¥ 133,864	116,245
Valuation techniques used in fair value measurement assets	Discounted cash flow method
Inputs used in fair value measurement assets	Discount rate
Relationships between fair value assets and unobservable inputs	The fair value is inversely related to discount rate
Fair value [member] \| Significant unobservable inputs Level 3 [member] \| Discounted cash flow method [member] \| Debt securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value of assets	¥ 158,507	¥ 160,499
Valuation techniques used in fair value measurement assets	Discounted cash flow method
Inputs used in fair value measurement assets	Discount rate
Relationships between fair value assets and unobservable inputs	The fair value is inversely related to discount rate
Fair value [member] \| Bottom of range [member] \| Significant unobservable inputs Level 3 [member] \| Comparable companies approach [member] \| Equity securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Interest rate significant unobservable inputs assets	12.00%	11.00%
Fair value [member] \| Bottom of range [member] \| Significant unobservable inputs Level 3 [member] \| Discounted cash flow method [member] \| Equity securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Interest rate significant unobservable inputs assets	2.61%	2.69%
Fair value [member] \| Bottom of range [member] \| Significant unobservable inputs Level 3 [member] \| Discounted cash flow method [member] \| Debt securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Interest rate significant unobservable inputs assets	2.41%	3.21%
Fair value [member] \| Top of range [member] \| Significant unobservable inputs Level 3 [member] \| Comparable companies approach [member] \| Equity securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Interest rate significant unobservable inputs assets	30.00%	30.00%
Fair value [member] \| Top of range [member] \| Significant unobservable inputs Level 3 [member] \| Discounted cash flow method [member] \| Equity securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Interest rate significant unobservable inputs assets	10.02%	9.93%
Fair value [member] \| Top of range [member] \| Significant unobservable inputs Level 3 [member] \| Discounted cash flow method [member] \| Debt securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Interest rate significant unobservable inputs assets	10.55%	9.78%