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Other assets and liabilities F.2. Inventories (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Subclassifications of assets, liabilities and equities [abstract]    
Telephone and equipment $ 23 $ 18
SIM cards 4 3
IRUs 0 3
Other 10 9
Inventory $ 37 $ 32 [1]
[1] The consolidated statement of financial position at December 31, 2019 has been restated after finalization of the purchase accounting of our acquisitions in Nicaragua and Panama (note A.1.2.).