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The Millicom Group - A.1.2. Acquisition of subsidiaries and changes in non-controlling interests in subsidiaries (Details) $ in Millions |  | 1 Months Ended | 4 Months Ended | 8 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 29, 2019 USD ($) | Oct. 31, 2019 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) $ / m | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2020 USD ($) | May 16, 2019 USD ($) | Feb. 20, 2019 USD ($) | Jan. 01, 2019 USD ($)
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling interests |  |  |  |  |  |  |  |  |  |  | $ (41) | $ 5 |  | $ (16) | [1] |  |  |  |
Intangible assets, net |  |  | $ 3,195 | [2] | $ 3,195 | [2] | $ 3,195 | [2] | $ 3,195 | [2] | 3,403 | 3,195 | [2] |  |  |  |  |  |
Property, plant and equipment, net |  |  | 2,899 | [2] | 2,899 | [2] | 2,899 | [2] | 2,899 | [2] | 2,755 | 2,899 | [2] | 2,764 |  |  |  |  | $ 3,071
Right of use assets |  |  | 1,012 | [2] | 1,012 | [2] | 1,012 | [2] | 1,012 | [2] | 895 | 1,012 | [2] |  |  |  |  |  | 0
Other current assets |  |  | 192 | [2] | 192 | [2] | 192 | [2] | 192 | [2] | 181 | 192 | [2] |  |  |  |  |  |
Lease liabilities (non-current) |  |  | 988 | [2] | 988 | [2] | 988 | [2] | 988 | [2] | 897 | 988 | [2] |  |  |  |  |  | 0
Lease liabilities |  |  | 107 | [2] | 107 | [2] | 107 | [2] | 107 | [2] | 123 | 107 | [2] |  |  |  |  |  | $ 0
Deferred tax liabilities |  |  | 285 | [2] | 285 | [2] | 285 | [2] | 285 | [2] | 209 | 285 | [2] |  |  |  |  |  |
Retained profits |  |  | 2,222 | [2] | 2,222 | [2] | 2,222 | [2] | 2,222 | [2] | 2,365 | 2,222 | [2] |  |  |  |  |  |
Non-controlling interests |  |  | 271 | [2] | 271 | [2] | 271 | [2] | 271 | [2] | 215 | 271 | [2] |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in cash and cash equivalents |  |  |  |  |  |  |  |  |  |  | (289) | 645 |  | $ (98) | [3] |  |  |  |
Additions to right-of-use assets |  |  |  |  | 30 |  |  |  |  |  | 86 | 102 |  |  |  |  |  |  |
Additions to lease liabilities |  |  |  |  | 30 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of controlling interest acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |
Cash consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 437 |  |
Cash consideration, provisionally adjusted |  |  | 430 |  | 430 |  | 430 |  | 430 |  | 426 | 430 |  |  |  |  |  |  |
Intangible assets, net |  |  | (4) |  | (4) |  | (4) |  | (4) |  |  | (4) |  |  |  |  |  |  |
Property, plant and equipment, net |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0 |  |  |  |  |  |  |
Right of use assets |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0 |  |  |  |  |  |  |
Other current assets |  |  | 4 |  | 4 |  | 4 |  | 4 |  |  | 4 |  |  |  |  |  |  |
Lease liabilities (non-current) |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0 |  |  |  |  |  |  |
Lease liabilities |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0 |  |  |  |  |  |  |
Deferred tax liabilities |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0 |  |  |  |  |  |  |
Retained profits |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0 |  |  |  |  |  |  |
Non-controlling interests |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0 |  |  |  |  |  |  |
Amounts recognised as of acquisition date for each major class of assets acquired and liabilities assumed [abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets (excluding goodwill), net |  |  | 131 |  | 131 |  | 131 |  | 131 |  |  | 131 |  |  |  |  | 131 |  |
Property, plant and equipment, net |  |  | 149 |  | 149 |  | 149 |  | 149 |  |  | 149 |  |  |  |  | 149 |  |
Right of use assets |  |  | 131 |  | 131 |  | 131 |  | 131 |  |  | 131 |  |  |  |  | 131 |  |
Other non-current assets |  |  | 2 |  | 2 |  | 2 |  | 2 |  |  | 2 |  |  |  |  | 2 |  |
Current assets (excluding cash) |  |  | 23 |  | 23 |  | 23 |  | 23 |  |  | 23 |  |  |  |  | 23 |  |
Trade receivables |  |  | 17 |  | 17 |  | 17 |  | 17 |  | 17 | 17 |  |  |  |  | 17 |  |
Cash and cash equivalents |  |  | 7 |  | 7 |  | 7 |  | 7 |  |  | 7 |  |  |  |  | 7 |  |
Total assets acquired |  |  | 459 |  | 459 |  | 459 |  | 459 |  |  | 459 |  |  |  |  | 459 |  |
Lease liabilities |  |  | 131 |  | 131 |  | 131 |  | 131 |  |  | 131 |  |  |  |  | 131 |  |
Other liabilities |  |  | 118 |  | 118 |  | 118 |  | 118 |  |  | 118 |  |  |  |  | 118 |  |
Total liabilities assumed |  |  | 249 |  | 249 |  | 249 |  | 249 |  |  | 249 |  |  |  |  | 249 |  |
Fair value of assets acquired and liabilities assumed, net |  |  | 210 |  | 210 |  | 210 |  | 210 |  |  | 210 |  |  |  |  | 210 |  |
Acquisition price |  |  | 426 |  | 426 |  | 426 |  | 426 |  |  | 426 |  |  |  |  | 430 |  |
Goodwill |  |  | 216 |  | 216 |  | 216 |  | 216 |  |  | 216 |  |  |  |  | $ 220 |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in intangible assets (excluding goodwill) |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Changes in cash and cash equivalents |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Changes in property, plant and equipment |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Changes in right of use assets |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Changes in other non-current assets |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Changes in current assets (excluding cash) |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Changes in trade receivables |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Changes in total assets acquired |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Changes in lease liabilities |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Changes in other liabilities |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Changes in total liabilities assumed |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Changes in fair value of assets acquired and liabilities assumed, net |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Changes in acquisition price |  |  |  |  |  |  |  |  | (4) |  |  |  |  |  |  |  |  |  |
Changes in final goodwill |  |  |  |  |  |  |  |  | (4) |  |  |  |  |  |  |  |  |  |
Fair value step-up of property, plant and equipment |  |  |  |  |  |  |  |  |  |  | 39 |  |  |  |  |  |  |  |
Right-of-use assets adjusted |  |  |  |  |  |  |  |  |  |  | 7 |  |  |  |  |  |  |  |
Indemnification assets for tax contingencies |  |  |  |  |  |  |  |  |  |  | 11 |  |  |  |  |  |  |  |
Tax contingent liabilities |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |
Deferred tax liabilities |  |  |  |  |  |  |  |  |  |  | $ 50 |  |  |  |  |  |  |  |
Revenue of acquiree since acquisition date |  |  |  |  |  |  | 144 |  |  |  |  |  |  |  |  |  |  |  |
Net profit (loss) of acquiree since acquisition date |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |  |
Revenue of combined entity as if combination occurred at beginning of period |  |  |  |  |  |  |  |  |  |  |  | 219 |  |  |  |  |  |  |
Net profit (loss) of combined entity as if combination occurred at beginning of period |  |  |  |  |  |  |  |  |  |  |  | (16) |  |  |  |  |  |  |
Amortisation of combined entity |  |  |  |  |  |  |  |  |  |  |  | 12 |  |  |  |  |  |  |
Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of controlling interest acquired | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |
Cash consideration | $ 594 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash consideration, provisionally adjusted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 587 |  |  |
Intangible assets, net |  |  | (20) |  | (20) |  | (20) |  | (20) |  |  | (20) |  |  |  |  |  |  |
Property, plant and equipment, net |  |  | 17 |  | 17 |  | 17 |  | 17 |  |  | 17 |  |  |  |  |  |  |
Right of use assets |  |  | 34 |  | 34 |  | 34 |  | 34 |  |  | 34 |  |  |  |  |  |  |
Other current assets |  |  | 7 |  | 7 |  | 7 |  | 7 |  |  | 7 |  |  |  |  |  |  |
Lease liabilities (non-current) |  |  | 22 |  | 22 |  | 22 |  | 22 |  |  | 22 |  |  |  |  |  |  |
Lease liabilities |  |  | 11 |  | 11 |  | 11 |  | 11 |  |  | 11 |  |  |  |  |  |  |
Deferred tax liabilities |  |  | 6 |  | 6 |  | 6 |  | 6 |  |  | 6 |  |  |  |  |  |  |
Retained profits |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0 |  |  |  |  |  |  |
Non-controlling interests |  |  | 0 |  | 0 |  | 0 |  | 0 |  |  | 0 |  |  |  |  |  |  |
Amounts recognised as of acquisition date for each major class of assets acquired and liabilities assumed [abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets (excluding goodwill), net | 178 |  | 182 |  | 182 |  | 182 |  | 182 |  |  | 182 |  |  |  |  |  |  |
Property, plant and equipment, net | 110 |  | 127 |  | 127 |  | 127 |  | 127 |  |  | 127 |  |  |  |  |  |  |
Right of use assets | 47 |  | 81 |  | 81 |  | 81 |  | 81 |  |  | 81 |  |  |  |  |  |  |
Other non-current assets | 3 |  | 3 |  | 3 |  | 3 |  | 3 |  |  | 3 |  |  |  |  |  |  |
Current assets (excluding cash) | 23 |  | 23 |  | 23 |  | 23 |  | 23 |  |  | 23 |  |  |  |  |  |  |
Trade receivables | 21 |  | 21 |  | 21 |  | 21 |  | 21 |  |  | 21 |  |  |  |  |  |  |
Cash and cash equivalents | 10 |  | 10 |  | 10 |  | 10 |  | 10 |  |  | 10 |  |  |  |  |  |  |
Total assets acquired | 391 |  | 446 |  | 446 |  | 446 |  | 446 |  |  | 446 |  |  |  |  |  |  |
Lease liabilities | 48 |  | 81 |  | 81 |  | 81 |  | 81 |  |  | 81 |  |  |  |  |  |  |
Other debt and financing | 74 |  | 74 |  | 74 |  | 74 |  | 74 |  |  | 74 |  |  |  |  |  |  |
Other liabilities | 101 |  | 107 |  | 107 |  | 107 |  | 107 |  |  | 107 |  |  |  |  |  |  |
Total liabilities assumed | 224 |  | 262 |  | 262 |  | 262 |  | 262 |  |  | 262 |  |  |  |  |  |  |
Fair value of assets acquired and liabilities assumed, net | 167 |  | 184 |  | 184 |  | 184 |  | 184 |  |  | 184 |  |  |  |  |  |  |
Acquisition price | 594 |  | 587 |  | 587 |  | 587 |  | 587 |  |  | 587 |  |  |  |  |  |  |
Goodwill | 426 |  | 403 |  | 403 |  | 403 |  | 403 |  |  | 403 |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in intangible assets (excluding goodwill) |  |  |  |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in cash and cash equivalents |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in property, plant and equipment |  |  |  |  | 17 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in right of use assets |  |  |  |  | 34 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in other non-current assets |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in current assets (excluding cash) |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in trade receivables |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in total assets acquired |  |  |  |  | 55 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in lease liabilities |  |  |  |  | 33 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in other debt and financing |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in other liabilities |  |  |  |  | 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in total liabilities assumed |  |  |  |  | 39 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in fair value of assets acquired and liabilities assumed, net |  |  |  |  | 16 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in acquisition price |  |  |  |  | (7) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Changes in final goodwill |  |  |  |  | (23) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value step-up of property, plant and equipment | 17 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Right-of-use assets adjusted | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred tax liabilities | $ 21 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue of acquiree since acquisition date |  |  | 80 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net profit (loss) of acquiree since acquisition date |  |  | 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue of combined entity as if combination occurred at beginning of period |  |  |  |  |  |  |  |  |  |  |  | 158 |  |  |  |  |  |  |
Net profit (loss) of combined entity as if combination occurred at beginning of period |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |
Amortisation of combined entity |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |
Telefonica de Costa Rica TC, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of controlling interest acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |
Telefonica CAM Acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition-related costs recognised as expense for transaction recognised separately from acquisition of assets and assumption of liabilities in business combination |  |  |  |  |  |  |  |  |  |  |  | 16 |  |  |  |  |  |  |
Amounts recognised as of acquisition date for each major class of assets acquired and liabilities assumed [abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,080 |
Cable Onda S.A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest in subsidiary | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Enterprise value of acquired entity | $ 1,460 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage ownership held by non-controlling interest | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Previously stated |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets, net |  |  | 3,219 |  | 3,219 |  | 3,219 |  | 3,219 |  |  | 3,219 |  |  |  |  |  |  |
Property, plant and equipment, net |  |  | 2,883 |  | 2,883 |  | 2,883 |  | 2,883 |  |  | 2,883 |  |  |  |  |  |  |
Right of use assets |  |  | 977 |  | 977 |  | 977 |  | 977 |  |  | 977 |  |  |  |  |  |  |
Other current assets |  |  | 181 |  | 181 |  | 181 |  | 181 |  |  | 181 |  |  |  |  |  |  |
Lease liabilities (non-current) |  |  | 967 |  | 967 |  | 967 |  | 967 |  |  | 967 |  |  |  |  |  |  |
Lease liabilities |  |  | 97 |  | 97 |  | 97 |  | 97 |  |  | 97 |  |  |  |  |  |  |
Deferred tax liabilities |  |  | 279 |  | 279 |  | 279 |  | 279 |  |  | 279 |  |  |  |  |  |  |
Retained profits |  |  | 2,222 |  | 2,222 |  | 2,222 |  | 2,222 |  |  | 2,222 |  |  |  |  |  |  |
Non-controlling interests |  |  | 271 |  | $ 271 |  | 271 |  | 271 |  |  | 271 |  |  |  |  |  |  |
Computer software | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value step-up of property, plant and equipment | $ 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Spectrum | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets useful lives |  |  |  |  |  |  |  |  |  |  | 14 years |  |  |  |  |  |  |  |
Fair value step-up on spectrum |  |  |  |  |  |  |  |  |  |  | $ 39 |  |  |  |  |  |  |  |
Spectrum | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets useful lives | 17 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value step-up on spectrum | $ 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer Lists | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets not previously recognized at the date of acquisition |  |  |  |  |  |  |  |  |  |  | $ 81 |  |  |  |  |  |  |  |
Customer Lists | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets not previously recognized at the date of acquisition | $ 55 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bottom of range | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life measured as period of time, property, plant and equipment |  |  |  |  |  |  |  |  |  |  | 6 years |  |  |  |  |  |  |  |
Bottom of range | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets useful lives | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life measured as period of time, property, plant and equipment |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bottom of range | Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets useful lives |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |
Bottom of range | Customer Lists | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets useful lives |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |
Top of range | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life measured as period of time, property, plant and equipment |  |  |  |  |  |  |  |  |  |  | 7 years |  |  |  |  |  |  |  |
Top of range | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets useful lives | 17 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life measured as period of time, property, plant and equipment |  |  |  |  | 8 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Top of range | Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets useful lives |  |  |  |  |  |  |  |  |  |  | 20 years |  |  |  |  |  |  |  |
Top of range | Customer Lists | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets useful lives |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |
Land and Buildings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Right of use assets |  |  | $ 148 |  | $ 148 |  | $ 148 |  | $ 148 |  | $ 147 | 148 |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additions to right-of-use assets |  |  |  |  |  |  |  |  |  |  | 41 | $ 25 |  |  |  |  |  |  |
Land and Buildings | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value step-up of property, plant and equipment |  |  |  |  |  |  |  |  |  |  | 8 |  |  |  |  |  |  |  |
Land and Buildings | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value step-up of property, plant and equipment | $ 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Core Network | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value step-up of property, plant and equipment |  |  |  |  |  |  |  |  |  |  | $ 25 |  |  |  |  |  |  |  |
Core Network | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value step-up of property, plant and equipment | $ 11 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Market approach | Useful Life, Measurement Input | Land and Buildings | Bottom of range | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable inputs, assets, duration |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |
Market approach | Useful Life, Measurement Input | Land and Buildings | Top of range | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable inputs, assets, duration |  |  |  |  |  |  |  |  |  |  | 30 years |  |  |  |  |  |  |  |
Market approach | Land and Buildings, Price per Square Meter, Measurement Input | Land and Buildings | Bottom of range | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable inputs, assets, price per square meter | $ / m |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |
Market approach | Land and Buildings, Price per Square Meter, Measurement Input | Land and Buildings | Top of range | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable inputs, assets, price per square meter | $ / m |  |  |  |  |  |  |  |  |  |  | 57 |  |  |  |  |  |  |  |
Cost approach | Useful Life, Measurement Input | Property, Plant and Equipment | Bottom of range | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable inputs, assets, duration |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |
Cost approach | Useful Life, Measurement Input | Property, Plant and Equipment | Top of range | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable inputs, assets, duration |  |  |  |  |  |  |  |  |  |  | 27 years |  |  |  |  |  |  |  |
Cost approach | Useful Life, Measurement Input | Core Network | Bottom of range | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable inputs, assets, duration |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |
Cost approach | Useful Life, Measurement Input | Core Network | Top of range | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable inputs, assets, duration |  |  |  |  |  |  |  |  |  |  | 27 years |  |  |  |  |  |  |  |
Cost approach | Remaining Useful Life, Measurement Input | Property, Plant and Equipment | Bottom of range | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable inputs, assets, duration |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |
Cost approach | Remaining Useful Life, Measurement Input | Property, Plant and Equipment | Top of range | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable inputs, assets, duration |  |  |  |  |  |  |  |  |  |  | 27 years |  |  |  |  |  |  |  |
Cost approach | Remaining Useful Life, Measurement Input | Core Network | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable inputs, assets, estimated duration |  |  |  |  |  |  |  |  |  |  | 1 year 8 months 12 days |  |  |  |  |  |  |  |
Market approach - Market comparable transactions | Spectrum | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable inputs, assets, estimated duration |  |  |  |  |  |  |  |  |  |  | 14 years |  |  |  |  |  |  |  |
Market approach - Market comparable transactions | Discount rate | Spectrum | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable input, assets |  |  |  |  |  |  |  |  |  |  | 0.14 |  |  |  |  |  |  |  |
Market approach - Market comparable transactions | Terminal Growth Rate, Measurement Input | Spectrum | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable input, assets |  |  |  |  |  |  |  |  |  |  | 2.5 |  |  |  |  |  |  |  |
Market approach - Market comparable transactions | EBITDA Margin, Measurement Input | Customer Lists | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable input, assets |  |  |  |  |  |  |  |  |  |  | 0.415 |  |  |  |  |  |  |  |
Income approach - Multi-Period Excess Earnings Method | Monthly Churn Rate, B2B, Measurement Input | Customer Lists | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable input, assets |  |  |  |  |  |  |  |  |  |  | 0.012 |  |  |  |  |  |  |  |
Income approach - Multi-Period Excess Earnings Method | Monthly Churn Rate, B2C, Measurement Input | Customer Lists | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable input, assets |  |  |  |  |  |  |  |  |  |  | 0.029 |  |  |  |  |  |  |  |
Income approach - Multi-Period Excess Earnings Method | Monthly Churn Rate, B2B, Measurement Input | Customer Lists | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable input, assets |  |  |  |  |  |  |  |  |  |  | 0.038 |  |  |  |  |  |  |  |
Income approach - Multi-Period Excess Earnings Method | Discount rate | Bottom of range | Customer Lists | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable input, assets |  |  |  |  |  |  |  |  |  |  | 0.14 |  |  |  |  |  |  |  |
Income approach - Multi-Period Excess Earnings Method | Discount rate | Bottom of range | Customer Lists | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable input, assets |  |  |  |  |  |  |  |  |  |  | 0.098 |  |  |  |  |  |  |  |
Income approach - Multi-Period Excess Earnings Method | Discount rate | Top of range | Customer Lists | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable input, assets |  |  |  |  |  |  |  |  |  |  | 0.15 |  |  |  |  |  |  |  |
Income approach - Multi-Period Excess Earnings Method | Discount rate | Top of range | Customer Lists | Telefonica Moviles Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable input, assets |  |  |  |  |  |  |  |  |  |  | 0.108 |  |  |  |  |  |  |  |
Income approach - Multi-Period Excess Earnings Method | EBITDA Margin, Measurement Input | Bottom of range | Customer Lists | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable input, assets |  |  |  |  |  |  |  |  |  |  | 0.36 |  |  |  |  |  |  |  |
Income approach - Multi-Period Excess Earnings Method | EBITDA Margin, Measurement Input | Top of range | Customer Lists | Telefonia Celular de Nicaragua, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognised as of Final Fair Value Date for Each Major Class of Assets Acquired and Liabilities Assumed [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant unobservable input, assets |  |  |  |  |  |  |  |  |  |  | 0.41 |  |  |  |  |  |  |  |
MIC Tanzania |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity decrease by net amount |  | $ 18 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage ownership held by non-controlling interest |  | (15.00%) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
MIC Tanzania | Government of Zanzibar |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of controlling interest acquired |  | 1.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 15.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | 2018 was not restated for the application of IFRS 16, as the Group elected the modified retrospective approach.
[2] | The consolidated statement of financial position at December 31, 2019 has been restated after finalization of the purchase accounting of our acquisitions in Nicaragua and Panama (note A.1.2.).
[3] | 2018 was not restated for the application of IFRS 16, as the Group elected the modified retrospective approach.

X
- Definition The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B64 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_f&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
Name: | ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of acquisition-related costs recognised as an expense for transactions that are recognised separately from the acquisition of assets and the assumption of liabilities in business combinations. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B64 -Subparagraph m -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_m&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
Name: | ifrs-full_AcquisitionrelatedCostsRecognisedAsExpenseForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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