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Combined Earnings Per Share - Summary of Movements in Shares (Detail) shares in Millions | 6 Months Ended
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Jun. 30, 2021 shares
Earnings per share [abstract] |
Number of shares, beginning balance (net of treasury shares) | 2,622.0
Shares repurchased under the share buyback programme | (18.0)
Net movement in shares under incentive schemes | 1.7
Number of shares, ending balance | 2,605.7

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- Definition The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_79_a_iv&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Decrease In The Number Of Shares Outstanding On Account Of Shares Repurchased. + References No definition available. + Details
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- Definition Increase (decrease) in number of shares outstanding through share-based payment transactions. + References No definition available. + Details
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