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Trade and Other Payables - Summary of Trade and Other Current Payables (Parenthetical) (Detail) ¥ in Thousands, $ in Thousands | Dec. 31, 2020 CNY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CNY (¥)
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Disclosure Of Detailed Information About Trade And Other Payables [line items] |  |  |
Bills payable | ¥ 3,348,163 | $ 517,386 | ¥ 2,764,013
Joint ventures [member] |  |  |
Disclosure Of Detailed Information About Trade And Other Payables [line items] |  |  |
Bills payable | 105,600 | 16,300 | 125,000
Associates [member] |  |  |
Disclosure Of Detailed Information About Trade And Other Payables [line items] |  |  |
Bills payable | 12,900 | 2,000 | 10,100
Other related parties [member] |  |  |
Disclosure Of Detailed Information About Trade And Other Payables [line items] |  |  |
Bills payable | ¥ 249,000 | $ 38,500 | ¥ 232,600

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- Details
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