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Investments in Subsidiaries - Assets and Liabilities and Cash Flow Effect of Disposal of Subsidiaries (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Property, Property, plant and equipment |  | ¥ 3,553,601 |  | ¥ 3,995,744 |  | $ 500,253 |  |
Right-of-use assets |  | 298,445 |  | 342,141 | ¥ 344,814 | 42,013 | $ 48,164 | $ 48,541
Cash and cash equivalents |  | 4,963,232 |  | 3,730,372 |  | 698,692 |  |
Total assets |  | 25,757,618 |  | 24,137,556 | 24,905,309 | 3,625,995 |  |
Trade and other payables |  | (9,475,529) |  | (8,374,724) |  | (1,333,905) |  |
Contract liabilities |  | (691,427) |  | (695,076) |  | (97,334) |  |
Gain on disposal: |  |  |  |  |  |  |  |
Less: Total estimated consideration due from acquirer |  | 236,734 |  | 0 |  | 33,326 |  |
Net cash outflow on disposal of a subsidiary |  | (32,056) | $ (4,513) | ¥ 0 | ¥ 0 |  |  |
Suzhou reman [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Property, Property, plant and equipment |  | 41,111 |  |  |  | 5,787 |  |
Right-of-use assets |  | 22,782 |  |  |  | 3,207 |  |
Trade and other receivables |  | 47,595 |  |  |  | 6,700 |  |
Cash and cash equivalents |  | 32,056 |  |  |  | 4,513 |  |
Total assets |  | 143,544 |  |  |  | 20,207 |  |
Trade and other payables |  | (20,109) |  |  |  | (2,831) |  |
Provision for warranty |  | (2,145) |  |  |  | (302) |  |
Contract liabilities |  | (104) |  |  |  | (14) |  |
Carrying value of net assets |  | 121,186 |  |  |  | 17,060 |  |
Gain on disposal: |  |  |  |  |  |  |  |
Total estimated consideration less cost of disposal | [1] | 234,228 | 32,973 |  |  |  |  |
Net assets derecognized |  | (121,186) |  |  |  | (17,060) |  |
Gain on disposal of the subsidiary (Note 7.2(a)) |  | 113,042 | 15,913 |  |  |  |  |
Total estimated consideration less cost of disposal | [1] | 234,228 | 32,973 |  |  |  |  |
Add: Transaction cost unpaid |  | 7,506 | 1,057 |  |  |  |  |
Less: Sales proceed received but restricted in use |  | (5,000) | (704) |  |  |  |  |
Less: Cash and cash equivalents of a subsidiary |  | (32,056) | (4,513) |  |  |  |  |
Less: Total estimated consideration due from acquirer |  | (236,734) |  |  |  | $ (33,326) |  |
Net cash outflow on disposal of a subsidiary |  | ¥ (32,056) | $ (4,513) |  |  |  |  |
[1] | The consideration is RMB 179.9 million (US$ 25.3 million), along with the book value of cash and cash equivalents and an agreed-upon fair value for the equipment in Suzhou Reman as of December 31, 2023.

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