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v3.21.1

Basis of Preparation and Accounting Policies - Estimated Useful Life of Assets (Detail) | 12 Months Ended
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Dec. 31, 2020
Freehold buildings [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Estimated useful life of Property, plant and equipment | 50 years
Leasehold buildings and improvements [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Description of estimated useful life of Property, plant and equipment | Shorter of 15 to 50 years or lease term
Bottom of range [member] | Plant, machinery and equipment [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Estimated useful life of Property, plant and equipment | 3 years
Bottom of range [member] | Office furniture, fittings and equipment [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Estimated useful life of Property, plant and equipment | 3 years
Bottom of range [member] | Motor and transport vehicles [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Estimated useful life of Property, plant and equipment | 3 years 6 months
Top of range [member] | Plant, machinery and equipment [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Estimated useful life of Property, plant and equipment | 20 years
Top of range [member] | Office furniture, fittings and equipment [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Estimated useful life of Property, plant and equipment | 20 years
Top of range [member] | Motor and transport vehicles [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Estimated useful life of Property, plant and equipment | 15 years

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- Definition Description of useful life used for property, plant and equipment. [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 c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The useful life, measured as period of time, used for property, plant and equipment. [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 c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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