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Trade and other receivables (Details) - EUR (€) € in Millions | Dec. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Trade and other current receivables | € 14,101 | € 14,156 | € 15,421
Previously stated [member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Trade and other current receivables |  | 14,156 |
Increase Decrease Due To Application Of IFRS 9 [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Trade and other current receivables | 427 | (427) |
Increase (decrease) due to application of IFRS 15 [member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Trade and other current receivables |  | (372) |
Reclassification to other current assets IFRS 15 [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Trade and other current receivables | € 372 | € (466) |

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- Definition The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_h&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_78_b&doctype=Standard -URIDate 2018-03-16 + Details
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