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Other Income and Expenses Recognized in Statement of Profit and Loss - Summary of Depreciation and Amortization (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
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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

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- Definition The amount of depreciation and amortisation expense. Depreciation and amortisation are the systematic allocations of depreciable amounts of assets over their useful lives. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2016-01-13 -Paragraph 23 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2016-03-30&anchor=para_23_e&doctype=Standard -URIDate 2016-03-31 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2016-01-13 -Paragraph 28 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2016-03-30&anchor=para_28_e&doctype=Standard -URIDate 2016-03-31 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2016-01-13 -Paragraph B13 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2016-03-30&anchor=para_B13_d&doctype=Appendix&seq=2 -URIDate 2016-03-31 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2016-01-13 -Paragraph 102 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_102&doctype=Standard -URIDate 2016-03-31 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2016-01-13 -Paragraph 99 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_99&doctype=Standard -URIDate 2016-03-31 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2016-01-13 -Paragraph 104 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_104&doctype=Standard -URIDate 2016-03-31 + Details
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