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Leases - Additional Information (Detail)
¥ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Statement [Line Items]      
Cash outflows for leases ¥ 51.2 $ 7.4 ¥ 52.6
Non-cash additions to right-of-use assets and lease liabilities 49.7 7.2 24.0
Operating lease rental income ¥ 18.1 $ 2.6 ¥ 15.2
Bottom of range [member]      
Statement [Line Items]      
Operating lease, term 1 year 1 year  
Operating lease term of contract 1 year 1 year  
Top of range [member]      
Statement [Line Items]      
Operating lease, term 20 years 20 years  
Operating lease term of contract 12 years 12 years