The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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The proportion of ownership interests in a subsidiary held by non-controlling interests. [Refer: Subsidiaries [member]; Non-controlling interests]

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Interest Rate on Call Option

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Threshold for Ownership Percentage of Counterparty to Make Call Option Exercisable

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Vesting Period of Call Option

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Vesting Period of Put Option

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Capital structure and financing - C.6.3. Call and put options (Details) - USD ($) $ in Millions	Dec. 13, 2018	Oct. 07, 2018	Dec. 31, 2018	Dec. 31, 2017
Disclosure of detailed information about business combination [line items]
Add (less) derivatives related to debt (SEK currency swap)			$ 0	$ 56
Cable Onda S.A
Disclosure of detailed information about business combination [line items]
Percentage ownership help by non-controlling interest	20.00%	20.00%
Vesting period of put option	42 months
Add (less) derivatives related to debt (SEK currency swap)	$ 239
Vesting period of call option	42 months
Threshold for ownership percentage of counterparty to make call option exercisable	10.00%
Interest rate on call option	10.00%