Inventories - Summary of Inventories (Detail) ¥ in Thousands, $ in Thousands	Dec. 31, 2019 CNY (¥)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 CNY (¥)
Classes of current inventories [abstract]
Raw materials	¥ 1,500,034	$ 211,717	¥ 1,243,955
Work in progress	35,688	5,037	30,038
Finished goods	1,288,415	181,848	1,243,871
Total inventories at the lower of cost and net realizable value	¥ 2,824,137	$ 398,602	¥ 2,517,864

No definition available.

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A classification of current inventory representing the amount of goods that have completed the production process and are held for sale in the ordinary course of business. [Refer: Inventories]

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The amount of current inventories. [Refer: Inventories]

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A classification of current inventory representing the amount of assets to be consumed in the production process or in the rendering of services. [Refer: Inventories]

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A classification of current inventory representing the amount of assets currently in production, which require further processes to be converted into finished goods or services. [Refer: Current finished goods; Inventories]

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