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The Millicom Group - A.3. Investments in associates (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2017	Dec. 31, 2016
Milvik AB
Disclosure of associates [line items]
Proceeds from disposal of equity investments, net of costs		$ 1
MKC Brilliant Holding GmbH (LIH)
Disclosure of associates [line items]
Proportion of ownership interest in associate	35.00%
Impairment loss			$ 48,000,000	$ 40,000,000

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The amount recognised as a reduction of the carrying amount of an asset or cash-generating unit to its recoverable amount. [Refer: Carrying amount [member]]

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The cash inflow from sales of investments other than investments accounted for using the equity method. [Refer: Investments accounted for using equity method; Investments other than investments accounted for using equity method]

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The proportion of ownership interest in an associate attributable to the entity. [Refer: Total for all associates [member]]

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