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Other non-current liabilities (Details) - EUR (€) € in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of other Noncurrent Liabilities Explanatory [Abstract] |  |
Liabilities from customer contracts | € 518 |

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- Definition Disclosure of other Noncurrent Liabilities Explanatory. + References No definition available. + Details
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- Definition The amount of non-current contract liabilities. [Refer: Contract liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2018-01-01 -Paragraph 105 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2018-03-01&anchor=para_105&doctype=Standard -URIDate 2018-03-16 + Details
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Balance Type: | credit
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