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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, 2018 shares
Earnings per share [abstract] |
Number of shares, beginning balance(net of treasury shares) | 2,738.9
Shares repurchased under the share buyback programme | (53.0)
Net movement in shares under incentive schemes | (0.3)
Number of shares, ending balance | 2,685.6

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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 2017-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_79_a_iv&doctype=Standard -URIDate 2017-03-09 + 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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- Definition Shares repurchased under the share buyback programme. + References No definition available. + Details
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