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(Loss)/earnings per share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
(Loss)/earnings per share |  |  |  |
(Loss)/profit attributable to equity holders as presented in the income statement | $ (10) | $ 100 | $ (11) | $ 157
Less: Dividend on preferred shares (see note 14) | (6) |  | (12) |
(Loss)/profit attributable to equity holders used in calculating earnings per share | $ (16) | $ 100 | $ (23) | $ 157
Weighted average number of common shares for EPS - Basic (millions) | 597.6 | 603.3 | 597.6 | 603.3
(Loss)/earnings per share - Basic | $ (0.03) | $ 0.17 | $ (0.04) | $ 0.26
(Loss)/profit attributable to equity holders used in calculating earnings per share - Diluted | $ (16) | $ 100 | $ (23) | $ 157
Weighted average number of ordinary shares for EPS - Diluted (millions) | 597.6 | 603.3 | 597.6 | 603.3
(Loss)/earnings per share - Diluted | $ (0.03) | $ 0.17 | $ (0.04) | $ 0.26
Dilutive potential shares | 0.0 | 0.0 | 0.0 | 0.0

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- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2022-03-24 -Paragraph 66 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2022-en-r&anchor=para_66&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2022-03-24 -Paragraph 67 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2022-en-r&anchor=para_67&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2022-03-24 -Paragraph 66 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2022-en-r&anchor=para_66&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2022-03-24 -Paragraph 67 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2022-en-r&anchor=para_67&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The profit (loss) attributable to ordinary equity holders of the parent entity. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2022-03-24 -Paragraph 70 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2022-en-r&anchor=para_70_a&doctype=Standard -URIDate 2022-03-24 + Details
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