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Commitments and Contingencies - Additional Information (Detail)
¥ in Millions, $ in Millions
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Disclosure of commitments and contingencies [line items]      
Capital commitments related to property, plant and equipment ¥ 425.2 $ 67.3 ¥ 450.0
Investments commitments related to interest in joint venture 0.0 0.0 17.6
Irrevocable letter of credits issued ¥ 31.7 $ 5.0 ¥ 54.4