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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

X

- Definition

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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