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Trade and other payables (Details) - EUR (€) € in Millions | Dec. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Disclosure Of Trade And Other Payables Explanatory [Line Items] |  |  |
Trade payables | € 11,645 |  | € 10,890
Down payments and advances from customers, joint venture partners in exploration and production |  |  | 545
Trade and other payables | € 16,747 |  | 16,748
Previously stated [member] |  |  |
Disclosure Of Trade And Other Payables Explanatory [Line Items] |  |  |
Trade payables |  |  | 10,890
Other payables |  |  | 5,061
Trade and other payables |  | € 15,305 | 16,748
Previously stated [member] | From Customers [Member] |  |  |
Disclosure Of Trade And Other Payables Explanatory [Line Items] |  |  |
Down payments and advances from customers, joint venture partners in exploration and production |  |  | 545
Previously stated [member] | Partners in E&P activities [Member] |  |  |
Disclosure Of Trade And Other Payables Explanatory [Line Items] |  |  |
Down payments and advances from customers, joint venture partners in exploration and production |  |  | 252
Increase (decrease) due to application of IFRS 15 [member] |  |  |
Disclosure Of Trade And Other Payables Explanatory [Line Items] |  |  |
Other payables |  |  | (113)
Trade and other payables |  |  | (113)
Reclassification to other current liabilities IFRS 15 [Member] |  |  |
Disclosure Of Trade And Other Payables Explanatory [Line Items] |  |  |
Other payables |  |  | (785)
Trade and other payables |  |  | (1,330)
Reclassification to other current liabilities IFRS 15 [Member] | From Customers [Member] |  |  |
Disclosure Of Trade And Other Payables Explanatory [Line Items] |  |  |
Down payments and advances from customers, joint venture partners in exploration and production |  |  | € (545)
Increase (decrease) due to changes in accounting policy [member] |  |  |
Disclosure Of Trade And Other Payables Explanatory [Line Items] |  |  |
Trade payables |  | 10,890 |
Other payables |  | 4,163 |
Trade and other payables |  | (1,443) |
Increase (decrease) due to changes in accounting policy [member] | Partners in E&P activities [Member] |  |  |
Disclosure Of Trade And Other Payables Explanatory [Line Items] |  |  |
Down payments and advances from customers, joint venture partners in exploration and production |  | € 252 |

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- Definition The amount of current payments received for goods or services to be provided in the future. [Refer: Advances received] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
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