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v3.21.1

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2020 CNY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 CNY (¥)
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | ¥ 4,210,444 |  |  |
Charge for the year | 450,092 | $ 69,552 | ¥ 422,859 | ¥ 420,277
Impairment loss | 3,920 | 606 | 3,950 | 30,173
Ending balance | 4,258,760 | 658,100 | 4,210,444 |
Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 9,020,638 |  | 8,376,567 |
Additions | 554,847 |  | 918,280 |
Disposals | (274,006) |  | (29,167) |
Write-off | (73,571) |  | (248,068) |
Translation difference | (6,088) |  | 3,026 |
Ending balance | 9,221,820 |  | 9,020,638 | 8,376,567
Accumulated depreciation, amortization and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | (4,810,194) |  | (4,620,067) |
Charge for the year | 478,320 |  | 453,219 |
Disposals | 261,499 |  | 23,895 |
Write-off | 66,154 |  | 243,931 |
Impairment loss | 3,920 |  | 3,950 |
Translation difference | (1,721) |  | 784 |
Ending balance | (4,963,060) |  | (4,810,194) | (4,620,067)
Freehold land [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 14,323 |  |  |
Ending balance | 13,605 | 2,102 | 14,323 |
Freehold land [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 14,836 |  | 14,430 |
Translation difference | (744) |  | 406 |
Ending balance | 14,092 |  | 14,836 | 14,430
Freehold land [member] | Accumulated depreciation, amortization and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | (513) |  | (499) |
Translation difference | (26) |  | 14 |
Ending balance | (487) |  | (513) | (499)
Leasehold buildings and improvements [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 1,527,287 |  |  |
Ending balance | 1,514,989 | 234,109 | 1,527,287 |
Leasehold buildings and improvements [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 2,376,090 |  | 2,342,545 |
Additions | 16,273 |  | 14,851 |
Disposals | (4,664) |  | (762) |
Transfers | 75,264 |  | 45,412 |
Write-off | (9,759) |  | (27,911) |
Translation difference | (3,825) |  | 1,955 |
Ending balance | 2,449,379 |  | 2,376,090 | 2,342,545
Leasehold buildings and improvements [member] | Accumulated depreciation, amortization and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | (848,803) |  | (768,320) |
Charge for the year | 92,034 |  | 105,818 |
Disposals | 1,102 |  | 284 |
Write-off | 4,660 |  | 25,376 |
Translation difference | (685) |  | 325 |
Ending balance | (934,390) |  | (848,803) | (768,320)
Construction in progress [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 1,037,035 |  |  |
Ending balance | 700,716 | 108,280 | 1,037,035 |
Construction in progress [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 1,037,035 |  | 470,188 |
Additions | 487,725 |  | 884,145 |
Transfers | (823,981) |  | (317,294) |
Translation difference | (63) |  | (4) |
Ending balance | 700,716 |  | 1,037,035 | 470,188
Plant and machinery [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 1,545,272 |  |  |
Ending balance | 1,935,681 | 299,118 | 1,545,272 |
Plant and machinery [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 5,285,022 |  | 5,238,702 |
Additions | 20,617 |  | 4,260 |
Disposals | (260,996) |  | (15,468) |
Transfers | 741,218 |  | 268,896 |
Write-off | (53,917) |  | (211,589) |
Translation difference | (459) |  | 221 |
Ending balance | 5,731,485 |  | 5,285,022 | 5,238,702
Plant and machinery [member] | Accumulated depreciation, amortization and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | (3,739,750) |  | (3,645,984) |
Charge for the year | 357,434 |  | 311,402 |
Disposals | 253,121 |  | 11,467 |
Write-off | 51,910 |  | 210,253 |
Impairment loss | 3,920 |  | 3,950 |
Translation difference | (269) |  | 134 |
Ending balance | (3,795,804) |  | (3,739,750) | (3,645,984)
Office furniture, fittings and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 43,444 |  |  |
Ending balance | 44,055 | 6,808 | 43,444 |
Office furniture, fittings and equipment [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 195,154 |  | 193,019 |
Additions | 14,066 |  | 6,763 |
Disposals | (3,604) |  | (902) |
Transfers | 7,323 |  | 2,986 |
Write-off | (8,983) |  | (7,126) |
Translation difference | (866) |  | 414 |
Ending balance | 203,090 |  | 195,154 | 193,019
Office furniture, fittings and equipment [member] | Accumulated depreciation, amortization and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | (151,710) |  | (133,524) |
Charge for the year | 19,913 |  | 25,324 |
Disposals | 3,218 |  | 547 |
Write-off | 8,719 |  | 6,883 |
Translation difference | (651) |  | 292 |
Ending balance | (159,035) |  | (151,710) | (133,524)
Motor and transport vehicles [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 43,083 |  |  |
Ending balance | 49,714 | $ 7,683 | 43,083 |
Motor and transport vehicles [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | 112,501 |  | 117,683 |
Additions | 16,166 |  | 8,261 |
Disposals | (4,742) |  | (12,035) |
Transfers | 176 |  |  |
Write-off | (912) |  | (1,442) |
Translation difference | (131) |  | 34 |
Ending balance | 123,058 |  | 112,501 | 117,683
Motor and transport vehicles [member] | Accumulated depreciation, amortization and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Beginning balance | (69,418) |  | (71,740) |
Charge for the year | 8,939 |  | 10,675 |
Disposals | 4,058 |  | 11,597 |
Write-off | 865 |  | 1,419 |
Translation difference | (90) |  | 19 |
Ending balance | ¥ (73,344) |  | ¥ (69,418) | ¥ (71,740)

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- Definition The decrease in property, plant and equipment resulting from disposals. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e_ii&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e_v&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 98 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_98_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in property, plant and equipment resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -Clause viii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e_viii&doctype=Standard -URIDate 2020-01-01 + Details
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