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Combined Earnings Per Share - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2021
Earnings per share [abstract]
Description on diluted earnings per share and underlying earnings per share calculation	In calculating underlying earnings per share, net profit attributable to shareholders’ equity is adjusted to eliminate the post-tax impact of non-underlying items.

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- References

No definition available.

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- Definition

The reconciliation of the denominators used in calculating basic and diluted earnings per share to each other.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 33
-IssueDate 2020-01-01
-Paragraph 70
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2020-en-r&anchor=para_70_b&doctype=Standard
-URIDate 2020-01-01

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