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IPO - Millicom's operations in Tanzania (Details)	12 Months Ended
	Dec. 31, 2016
Tigo Tanzania
Disclosure of classes of share capital [line items]
Percentage of outstanding capital required to be sold in public offering	25.00%

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- Definition

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

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- Definition

Percentage of Outstanding Capital Required to be Sold in Public Offering

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No definition available.

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