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Performance B.7. Earnings Per Share (Details) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings (loss) per common share for profit (loss) attributable to the owners of the Company:
Net profit (loss) attributable to equity holders from continuing operations	$ (332)	$ 93	$ 23
Net profit (loss) attributable to equity holders from discontinued operations	(12)	57	(33)
Net profit/(loss) attributable to all equity holders to determine the basic earnings (loss) per share	$ (344)	$ 149	$ (10)	[1]
Weighted average ordinary shares and adjusted weighted average ordinary shares [abstract]
Weighted average number of ordinary shares (excluding treasury shares) for basic earnings per share) (in shares)	101,172	101,144	100,793
Potential incremental shares as a result of share options (in shares)	0	0	0
Weighted average number of ordinary shares (excluding treasury shares) adjusted for the effect of dilution (in shares)	101,172	101,144	100,793
[1] 2018 was not restated for the application of IFRS 16, as the Group elected the modified retrospective approach.

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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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The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]

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