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Capital structure and financing - C.3.3. Interest and other financial expenses (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Interest and other financial expenses:      
Interest expense on bonds and bank financing $ (345) $ (386) $ (348)
Interest expense on leases (131) (156) (157)
Early redemption charges (5) (15) (10)
Others (50) (67) (47)
Total interest and other financial expenses $ (531) [1] $ (624) $ (564)
[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.