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Segment Information - Summary of Products and Services (Detail) - product	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of disaggregation of revenue from contracts with customers [line items]
Number of products individually accounted for 5% or more of revenue in each year	10	9	9
Fabric [member] | Home Care [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Percentage of entity's revenue	14.00%	15.00%	15.00%
Ice Cream [member] | Foods and Refreshment [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Percentage of entity's revenue	13.00%	13.00%	13.00%
Skin Cleasning [member] | Beauty And Personal Care [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Percentage of entity's revenue	12.00%	10.00%	10.00%
Hair Care [member] | Beauty And Personal Care [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Percentage of entity's revenue	11.00%	12.00%	12.00%
Savoury [member] | Foods and Refreshment [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Percentage of entity's revenue	11.00%	11.00%	11.00%
Deodorants [member] | Beauty And Personal Care [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Percentage of entity's revenue	8.00%	8.00%	8.00%
Skin Care [member] | Beauty And Personal Care [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Percentage of entity's revenue	7.00%	8.00%	7.00%
Dressings [member] | Foods and Refreshment [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Percentage of entity's revenue	6.00%	5.00%	5.00%
Tea [member] | Foods and Refreshment [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Percentage of entity's revenue	6.00%	6.00%	6.00%
Home and Hygiene [member] | Home Care [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Percentage of entity's revenue	5.00%	4.00%	4.00%
Other [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Percentage of entity's revenue	8.00%	7.00%	9.00%

X

- 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.

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- Definition

The percentage of the entity's revenue. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 8
-IssueDate 2020-01-01
-Paragraph 34
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-URIDate 2020-01-01

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- Definition

Number of Products Contributing More than 5 Percentage to Group Revenue.

+ References

No definition available.

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