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Segmental information - Summary of Information by Reportable Segment - Reconciliation of Capital Expenditure (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of reportable segments [line items] |  |  |
Capital expenditure per management reporting | $ 336 | $ 238 | $ 262
Landlord contributions to property, plant and equipment | 14 |  |
Timing differences and other adjustments | (1) | (8) |
Additions per the Financial Statements | 349 | 230 |
Property, plant and equipment | 44 | 29 |
Intangible assets | 241 | 180 |
Investment in associates and joint ventures | 47 | 14 |
Other financial assets | 17 | 7 |
Additions per the Financial Statements | 349 | 230 |
Americas [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Capital expenditure per management reporting | 120 | 67 | 87
Timing differences and other adjustments |  | 1 |
Additions per the Financial Statements | 120 | 68 |
Property, plant and equipment | 10 | 13 |
Intangible assets | 51 | 36 |
Investment in associates and joint ventures | 47 | 14 |
Other financial assets | 12 | 5 |
Additions per the Financial Statements | 120 | 68 |
Europe [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Capital expenditure per management reporting | 18 | 15 | 45
Additions per the Financial Statements | 18 | 15 |
Intangible assets | 15 | 15 |
Other financial assets | 3 |  |
Additions per the Financial Statements | 18 | 15 |
AMEA [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Capital expenditure per management reporting | 8 | 7 | 8
Timing differences and other adjustments |  | (1) |
Additions per the Financial Statements | 8 | 6 |
Property, plant and equipment |  | 2 |
Intangible assets | 6 | 2 |
Other financial assets | 2 | 2 |
Additions per the Financial Statements | 8 | 6 |
Greater China [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Capital expenditure per management reporting | 2 | 1 | 4
Timing differences and other adjustments |  | (1) |
Additions per the Financial Statements | 2 |  |
Property, plant and equipment | 2 |  |
Additions per the Financial Statements | 2 |  |
Central [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Capital expenditure per management reporting | 188 | 148 | $ 118
Landlord contributions to property, plant and equipment | 14 |  |
Timing differences and other adjustments | (1) | (7) |
Additions per the Financial Statements | 201 | 141 |
Property, plant and equipment | 32 | 14 |
Intangible assets | 169 | 127 |
Additions per the Financial Statements | $ 201 | $ 141 |

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- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e_i&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition Total additions per the financial statements. + References No definition available. + Details
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- Definition Landlord contributions to property, plant and equipment. + References No definition available. + Details
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- Details
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