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.

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Name:	ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Individuals With Highest Emoluments - Emoluments by Bands (Detail) - Individual	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Emolument band 2,000,001 - 2,500,000 [member]
Disclosure of transactions between related parties [line items]
Number of individuals	4	5	5
Emolument band 2,500,001 - 3,000,000 [member]
Disclosure of transactions between related parties [line items]
Number of individuals	1