Other Income and Expenses Recognized in Statement of Profit and Loss - Summary of Depreciation and Amortization (Detail) ¥ in Thousands, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2017
CNY (¥)
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
CNY (¥)
|
Dec. 31, 2015
CNY (¥)
|
|
| Disclosure of income statement [Line Items] | ||||
| Depreciation and amortization expenses | ¥ 444,181 | $ 70,177 | ¥ 478,160 | ¥ 469,435 |
| Cost of sales [Member] | ||||
| Disclosure of income statement [Line Items] | ||||
| Depreciation and amortization expenses | 307,102 | 48,520 | 322,289 | 319,962 |
| Research and development expenses [Member] | ||||
| Disclosure of income statement [Line Items] | ||||
| Depreciation and amortization expenses | 48,291 | 7,630 | 56,812 | 58,204 |
| Selling, general and administrative expenses [Member] | ||||
| Disclosure of income statement [Line Items] | ||||
| Depreciation and amortization expenses | ¥ 88,788 | $ 14,027 | ¥ 99,059 | ¥ 91,269 |