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Accounting Information and Policies - Additional Information (Detail) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Disclosure Of Summary Of Significant Accounting Policies [Line Items] |  |
Prior year restatement recognised in equity |  | € 393
Net monetary gain/(loss) | € 122 |
Hyperinflation restatement [member] |  |
Disclosure Of Summary Of Significant Accounting Policies [Line Items] |  |
Total assets | 538 |
Hyperinflationary adjustment, property, plant and equipment | 171 |
Increase in goodwill | 369 |
Prior year restatement recognised in equity | 393 |
Turnover | (75) |
Operating profit | (37) |
Net monetary gain/(loss) | 122 |
IFRS sixteen [member] |  |
Disclosure Of Summary Of Significant Accounting Policies [Line Items] |  |
Estimated increase in total assets | 1,700 |
Estimated split in land and buildings | 1,300 |
Estimated split in plant and machinery | 400 |
Expected financial liabilities increase | 1,900 |
Expected increase in depreciation | 470 |
Reduction in operating lease expenses | 550 |
Increase in operating profit | 80 |
Expected increase in finance cost | 90 |
Increase cash flows from operating activities | 550 |
IFRS sixteen [member] | Europe [member] |  |
Disclosure Of Summary Of Significant Accounting Policies [Line Items] |  |
Estimated increase in total assets | 500 |
IFRS sixteen [member] | Americas [member] |  |
Disclosure Of Summary Of Significant Accounting Policies [Line Items] |  |
Estimated increase in total assets | 500 |
IFRS sixteen [member] | Asia/AMET/RUB [member] |  |
Disclosure Of Summary Of Significant Accounting Policies [Line Items] |  |
Estimated increase in total assets | € 700 |

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- Definition The gains (losses) representing the difference resulting from the restatement of non-monetary assets, owners' equity and items in the statement of comprehensive income and the adjustment of index linked assets and liabilities in hyperinflationary reporting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 29 -IssueDate 2017-01-01 -Paragraph 9 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=29&date=2017-03-01&anchor=para_9&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Expected impact to cash flow from adoptionof IFRS sixteen from first January 2019. + References No definition available. + Details
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- Definition Expected impact to finance costs from adoption of IFRS sixteen from first January 2019. + References No definition available. + Details
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- Definition Expected impact to financial liabilities from adoption of IFRS sixteen from first January 2019. + References No definition available. + Details
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- Definition Expected impact to land and buildings from adoption of IFRS sixteen from first January 2019. + References No definition available. + Details
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- Definition Expected impact to operating lease expenses from adoption of IFRS sixteen from first January 2019. + References No definition available. + Details
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- Definition Expected impact to operating profit from adoption of IFRS sixteen from first January 2019. + References No definition available. + Details
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- Definition Expected impact to plant and machinery from adoption of IFRS sixteen from first January 2019. + References No definition available. + Details
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- Definition Hyperinflationary restatement goodwill. + References No definition available. + Details
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