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Long-term assets - E.1.3. Movement in intangible assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | $ 1,265 | $ 1,359
Change in scope | 1,185 | 20
Additions | 158 | 130
Amortization charge | (144) | (153)
Impairment | (6) | (15)
Disposals, net | 0 | (1)
Transfers | (16) | (19)
Transfers to/from assets held for sale | (12) | (64)
Exchange rate movements | (55) | 9
Closing balance, net | 2,374 | 1,265
Goodwill |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 599 | 615
Change in scope | 512 | 3
Additions | 0 | 0
Amortization charge |  | 0
Impairment | (6) | (7)
Disposals, net | 0 | 0
Transfers | 0 | (2)
Transfers to/from assets held for sale | 0 | (8)
Exchange rate movements | (28) | (1)
Closing balance, net | 1,077 | 599
Licenses |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 324 | 380
Change in scope | 0 | 0
Additions | 66 | 40
Amortization charge | (48) | (49)
Impairment | 0 | (8)
Disposals, net | 0 | 0
Transfers | 0 | 3
Transfers to/from assets held for sale | (12) | (50)
Exchange rate movements | (12) | 7
Closing balance, net | 318 | 324
Customer lists |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 33 | 32
Change in scope | 370 | 15
Additions | 0 | 0
Amortization charge | (11) | (15)
Impairment | 0 | 0
Disposals, net | 0 | 0
Transfers | 0 | 0
Transfers to/from assets held for sale | 0 | (1)
Exchange rate movements | (1) | 1
Closing balance, net | 391 | 33
IRUs |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 105 | 114
Change in scope | 0 | 0
Additions | 2 | (2)
Amortization charge | (14) | (14)
Impairment | 0 | 0
Disposals, net | 0 | 0
Transfers | 0 | 8
Transfers to/from assets held for sale | 0 | 0
Exchange rate movements | (5) | 0
Closing balance, net | 89 | 105
Trademarks |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 10 | 18
Change in scope | 280 | 0
Additions | 0 | 0
Amortization charge | (8) | (8)
Impairment | 0 | 0
Disposals, net | 0 | 0
Transfers | 0 | 0
Transfers to/from assets held for sale | 0 | 0
Exchange rate movements | 0 | 0
Closing balance, net | 282 | 10
Other |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 194 | 200
Change in scope | 23 | 1
Additions | 91 | 92
Amortization charge | (65) | (67)
Impairment | 0 | 0
Disposals, net | 0 | (1)
Transfers | (16) | (28)
Transfers to/from assets held for sale | 0 | (5)
Exchange rate movements | (9) | 2
Closing balance, net | 218 | 194
Cost or valuation |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 2,288 |
Closing balance, net | 3,451 | 2,288
Cost or valuation | Goodwill |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 599 |
Closing balance, net | 1,077 | 599
Cost or valuation | Licenses |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 650 |
Closing balance, net | 646 | 650
Cost or valuation | Customer lists |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 225 |
Closing balance, net | 581 | 225
Cost or valuation | IRUs |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 181 |
Closing balance, net | 176 | 181
Cost or valuation | Trademarks |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 49 |
Closing balance, net | 325 | 49
Cost or valuation | Other |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 584 |
Closing balance, net | 646 | 584
Accumulated amortization and impairment |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | (1,022) |
Closing balance, net | (1,077) | (1,022)
Accumulated amortization and impairment | Goodwill |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | 0 |
Closing balance, net | 0 | 0
Accumulated amortization and impairment | Licenses |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | (327) |
Closing balance, net | (328) | (327)
Accumulated amortization and impairment | Customer lists |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | (192) |
Closing balance, net | (190) | (192)
Accumulated amortization and impairment | IRUs |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | (76) |
Closing balance, net | (87) | (76)
Accumulated amortization and impairment | Trademarks |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | (39) |
Closing balance, net | (43) | (39)
Accumulated amortization and impairment | Other |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Opening balance, net | (389) |
Closing balance, net | $ (428) | $ (389)

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- Definition The increase in intangible assets and goodwill resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2018-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2018-03-01&anchor=para_118_e_i&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Business combinations [member]; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2018-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2018-03-01&anchor=para_118_e_i&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The decrease in intangible assets and goodwill resulting from classification as held for sale or inclusion in a disposal group classified as held for sale. [Refer: Disposal groups classified as held for sale [member]; Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2018-01-01 -Paragraph 118 -Subparagraph e -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2018-03-01&anchor=para_118_e_ii&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of impairment loss recognised in profit or loss for intangible assets and goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2018-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2018-03-01&anchor=para_118_e_iv&doctype=Standard -URIDate 2018-03-16 + Details
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