XML 105 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Document and entity information
 12 Months Ended
Dec. 31, 2019
shares
Cover [Abstract]  
Entity Registrant Name MILLICOM INTERNATIONAL CELLULAR SA
Entity Central Index Key 0000912958
Document Type 20-F
Amendment Flag false
Entity Current Reporting Status Yes
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Entity Well-known Seasoned Issuer No
Entity Common Stock, Shares Outstanding 101,739,217
Document Fiscal Year Focus 2019
Document Fiscal Period Focus FY
Document Period End Date Dec. 31, 2019
Entity Shell Company false
Entity Emerging Growth Company false
Entity Voluntary Filers No
Document Annual Report true
Document Transition Report false