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Capital structure and financing - C.3. Debt and financing (Details) $ in Millions, $ in Millions | Dec. 31, 2018 USD ($) | Jul. 31, 2018 USD ($) | Jul. 31, 2018 COP ($) | Dec. 31, 2017 USD ($)
--- | --- | --- | --- | ---
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Total non-current financing | $ 4,291 |  |  | $ 3,742 |
Less: portion payable within one year | (168) |  |  | (142) |
Debt and financing – non-current | 4,123 |  |  | 3,600 | [1]
Total non-current financing due after more than one year | 289 |  |  | 43 |
Debt and financing – current | 458 |  |  | 185 | [1]
Borrowings | 4,580 |  |  | 3,785 |
Millicom International Cellular S.A. (Luxembourg) |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | 1,770 |  |  | 1,255 |
Colombia |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | 1,016 |  |  | 1,130 |
Paraguay |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | 504 |  |  | 488 |
Bolivia |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | 317 |  |  | 352 |
Panama |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | 261 |  |  | 0 |
Tanzania (excluding Zantel) |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | 201 |  |  | 217 |
Rwanda |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | 0 |  |  | 50 |
Chad |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | 64 |  |  | 70 |
Costa Rica |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | 148 |  |  | 76 |
El Salvador |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | 299 |  |  | 147 |
Bilateral Facility With IIC [Member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings face amount |  | $ 50 | $ 144,054.5 |  |
Borrowings, interest rate |  | 9.45% | 9.45% |  |
Bonds |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Total non-current financing | 2,501 |  |  | 2,147 |
Total non-current financing due after more than one year | 0 |  |  | 0 |
Banks |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Total non-current financing | 1,324 |  |  | 1,158 |
Total non-current financing due after more than one year | 289 |  |  | 40 |
Finance lease liabilities |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Total non-current financing | 353 |  |  | 362 |
Total non-current financing due after more than one year | 0 |  |  | 3 |
Other Borrowings |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Total non-current financing | 113 |  |  | 74 |
Total non-current financing due after more than one year | $ 0 |  |  | $ 0 |
[1] | Not restated for the application of IFRS 15 and 9, as the Group elected the modified retrospective approach for both standards.

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