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Financial assets available for sale (Details Textual) - EUR (€) € in Millions | Dec. 31, 2017 | Dec. 31, 2016
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DisclosureOfFinancialAssetsAvailableForSaleLineItems [Line Items] |  |  |
Current financial assets available-for-sale | [1] | € 207 | € 238
Securities held for non-operating purposes [Member] |  |  |
DisclosureOfFinancialAssetsAvailableForSaleLineItems [Line Items] |  |  |
Current financial assets available-for-sale |  | 207 | 238
Securities held for non-operating purposes [Member] | Quoted bonds issued by sovereign states [Member] |  |  |
DisclosureOfFinancialAssetsAvailableForSaleLineItems [Line Items] |  |  |
Current financial assets available-for-sale |  | 190 | 210
Securities held for non-operating purposes [Member] | Quoted Securities Issued By Financial Institutions [Member] |  |  |
DisclosureOfFinancialAssetsAvailableForSaleLineItems [Line Items] |  |  |
Current financial assets available-for-sale |  | € 17 | € 28
[1] | In the profit and loss account, economic effects were essentially recognized as expense within &#147;Purchase, services and other&#148; for &euro;933 million (expense for &euro;840 million in 2016) (impairments net of reversal) and as expense for &euro;25 million within &#147;Finance income (expense)&#148; (expense for &euro;276 million in 2016) (exchange rate differences at year-end and amortized cost).

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- Definition The amount of current financial assets available-for-sale. [Refer: Financial assets available-for-sale; Current financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 8 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_8_d&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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