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Investment Property - Summary of Fair Value Measurement of Investment Property (Detail) - Market Comparison and Cost Method [Member]	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Valuation techniques	Market comparison and cost method	Market comparison and cost method
Unobservable input	Comparable price: -RMB 102 to RMB 570(US$14 to US$79) per square foot	Comparable price: -RMB 189 to RMB 458 per square foot
Inter-relationship between key unobservable inputs and fair value measurement	The estimated fair value increases with higher comparable price	The estimated fair value increases with higher comparable price

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- Definition

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]]

+ References

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- Definition

The description of the methods used to develop and substantiate the unobservable inputs used in the fair value measurement of assets.

+ References

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- Definition

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 used in fair value measurement [domain]; Cost approach [member]; Income approach [member]; Market approach [member]]

+ References

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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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