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Employee Defined Combination Plan - Additional Information (Detail)
$ in Millions, ¥ in Billions
12 Months Ended
Dec. 31, 2023
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
CNY (¥)
Retirement Benefits [Abstract]        
Amounts incurred for employee defined contribution plan ¥ 4.6 $ 647 ¥ 4.3 ¥ 4.1