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Net Finance Costs - Summary of Net Finance Costs (Detail) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of detailed information about finance income expense [Line Items] |  |  |
Finance costs | € (556) | € (584) | € (516)
Bank loans and overdrafts | (46) | (67) | (56)
Interest on bonds and other loans | (519) | (501) | (492)
Dividends paid on preference shares | (4) | (4) | (4)
Net gain/(loss) on transactions for which hedge accounting is not applied | 13 | (12) | 36
Finance income | 157 | 115 | 144
Pensions and similar obligations | (96) | (94) | (121)
Net finance costs before non-underlying items | (495) | (563) | (493)
Premium paid on buy back of preference shares | (382) | 0 | 0
Net finance costs | (877) | (563) | (493)
Foreign exchange derivatives [member] |  |  |
Disclosure of detailed information about finance income expense [Line Items] |  |  |
Net gain/(loss) on transactions for which hedge accounting is not applied | 384 | (215) | (218)
Exchange Differences On Underlying Items [member] |  |  |
Disclosure of detailed information about finance income expense [Line Items] |  |  |
Net gain/(loss) on transactions for which hedge accounting is not applied | € (371) | € 203 | € 254

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- Definition The amount of dividends paid by the entity on shares other than ordinary shares. [Refer: Ordinary shares [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 34 -IssueDate 2016-01-13 -Paragraph 16A -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=34&date=2016-03-30&anchor=para_16A_f&doctype=Standard -URIDate 2016-03-31 + Details
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- Definition The amount of costs associated with financing activities of the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2016-01-13 -Paragraph 82 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_82_b&doctype=Standard -URIDate 2016-03-31 + Details
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- Definition The amount of income associated with interest and other financing activities of the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2016-01-13 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_85&doctype=Standard -URIDate 2016-03-31 + Details
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- Definition The amount of interest expense on bank loans and overdrafts. [Refer: Interest expense; Bank overdrafts] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2016-01-13 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_112_c&doctype=Standard -URIDate 2016-03-31 + Details
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- Definition Interest expense on bonds and other loans. + References No definition available. + Details
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- Details
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