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Performance B.7. Earnings Per Share (Details) - USD ($)
shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
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 $ 591 $ (332) $ 93
Net profit (loss) attributable to equity holders from discontinued operations 0 (12) 57
Net profit/(loss) attributable to all equity holders to determine the basic profit (loss) per share $ 590 [1] $ (344) $ 149
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) 101,129 101,172 101,144
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) 101,129 101,172 101,144
[1] (i)    Tigo Guatemala is fully consolidated since the acquisition of the remaining 45% shareholding on November 12, 2021. See note A.1.2. for further details. As a result, numbers might not be directly comparable with previous years' figures.