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The Millicom Group - A.1.3. Disposal of subsidiaries and decreases in non-controlling interests of subsidiaries (Details) - Discontinued operations - USD ($) $ in Millions |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 26, 2019 | Apr. 27, 2018 | Aug. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 19, 2017
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |
Gain (loss) on disposal of discontinued operations |  |  |  | $ 0 | $ 74 | $ (29) |
Discontinued Operations - Chad |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |
Cash consideration for disposal of operations | $ 110 |  |  |  |  |  |
Disposal Group, Price Adjustment |  |  | $ 8 |  |  |  |
Gain (loss) on disposal of discontinued operations | $ 77 |  |  |  |  |  |
Discontinued Operations - Rwanda |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |
Gain (loss) on disposal of discontinued operations |  |  |  |  | $ (32) |  |
Consideration for disposal of operations |  |  |  |  |  |  | $ 51
Deferred cash payment due |  |  |  |  |  |  | 18
Earn-outs not recognized |  |  |  |  |  |  | $ 7
Discontinued Operations - Senegal |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |
Cash consideration for disposal of operations |  | $ 151 |  |  |  |  |
Gain (loss) on disposal of discontinued operations |  | $ 6 |  |  |  |  |

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- Definition The gain (loss) recognised on the measurement to fair value less costs to sell or on the disposal of the assets or disposal group(s) constituting the discontinued operation. [Refer: Discontinued operations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2019-01-01 -Paragraph 33 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2019-en-r&anchor=para_33_b_iii&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The cash inflow from the disposal of non-current assets or disposal groups classified as held for sale and discontinued operations. [Refer: Discontinued operations [member]; Disposal groups classified as held for sale [member]; Non-current assets or disposal groups classified as held for sale] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_16&doctype=Standard -URIDate 2019-03-27 + Details
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