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Trade and other receivables (Details Textual) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Decrease in trade receivables | € 1,004 |  |
Trade receivables | 10,182 | € 11,186 |
Other non-current financial assets | 1,675 | 1,860 |
Financing receivables for non operating pursposes | 209 | 385 |
Receivables from sale of properties | 597 | 171 |
Current receivables from sale of properties | € 153 | 166 |
Interest percentage in project | 1.71% |  |
Disposals investment property | € 442 | 530 |
Recognition of losses on doubtful accounts | 448 | 607 |
Other current receivables | 4,642 | 5,693 |
Overdue other receivables | 646 | 775 |
Foreign exchange gain (loss) | (905) | 676 | € (354)
Other receivables | 5,239 | 5,864 |
Allowance account for credit losses of trade and other receivables at end of period | 539 | 503 |
Deduction allowance account for credit losses of trade and other receivables | 455 |  |
Financing receivables in currencies other than euro | 82 | 121 |
Receivables Overdue, net | 570 | 684 |
Allowance account for credit losses of financial assets | 2,729 | 2,371 |
Accrued trade receivable | 484 |  |
Collections from trade receivable | 398 |  |
Additions allowance account for credit losses of trade and other receivables | 927 |  |
Settlement Agreement [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Overdue trade receivables for hydrocarbons supplies |  | 264 |
Current year [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Collections from trade receivable | 350 |  |
Commercial And Industrial Agreements [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Proceeds from trade receivables | 420 | 443 |
State Oil Company [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Receivables Overdue, net | 570 | 684 |
Additions allowance account for credit losses of trade and other receivables | 388 |  |
Nigerian national oil company [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Receivables from sale of properties | 713 | 716 |
State-owned oil companies [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Trade receivables | 438 | 611 |
BNP Paribas [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Trade receivables | 39 |  |
Third Counterparties [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Trade receivables | 29 |  |
Nigeria [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Receivables from sale of properties | 1,507 |  |
Other receivables | 1,507 | 382 |
Other receivable writeoff | € 214 |  |
Egypt [Member] | Intererst one [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Percentage of interest divested | 10.00% |  |
Egypt [Member] | Intererst Two [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Percentage of interest divested | 30.00% |  |
CARDON IV SA [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Other non-current financial assets | € 955 | 1,054 |
Joint Ventures [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Other non-current financial assets | € 1,214 | 1,350 |
Proportion of ownership interest in joint venture | 50.00% |  |
Other current receivables | € 3,369 | 4,111 |
Venezuelan [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Impairment loss recognised in profit or loss, trade receivables | 19 |  |
Currencies Other Than Euros [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Trade receivables | 2,942 | 3,629 |
Other non-current financial assets | 1,428 | 1,606 |
Other receivables | 4,799 | 5,253 |
Factoring Of Receivables [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Trade receivables | 2,051 | 1,769 |
Gas & Power Segment [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Decrease in trade receivables | 706 |  |
Recognition of losses on doubtful accounts | 400 |  |
Allowance account for credit losses of trade and other receivables at end of period | 446 |  |
Gas & Power Segment [Member] | Factoring Of Receivables [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Trade receivables | 1,722 | 1,434 |
Refining & Marketing and Chemical segment [Member] | Factoring Of Receivables [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Trade receivables | 329 | 335 |
Exploration & Production Segment [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Trade receivables | 1,323 | € 1,764 |
Other receivables | 375 |  |
Allowance account for credit losses of trade and other receivables at end of period | 55 |  |
Operated oil project [Member] | Contractual recovery of costs [Member] |  |  |
DisclosureOfTradeAndOtherReceivablesLineItems [Line Items] |  |  |
Other receivables | € 153 |  |

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- Definition The amount of additions in accumulated impairment losses of trade and other receivables. + References No definition available. + Details
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- Definition The amount at the end of the period of accumulated impairment losses of trade and other receivables. + References No definition available. + Details
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- Definition The amount collections from trade receivable. + References No definition available. + Details
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- Definition The amount of financing receivables for non operating purposes. + References No definition available. + Details
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- Definition The amount of overdue trade receivables for hidrocarbons supplies. + References No definition available. + Details
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- Definition The amount of current receivables from sale of properties. [Refer: Receivables from sale of properties] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78_b&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The decrease in investment property resulting from disposals. [Refer: Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 76 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_76_c&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph d -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_79_d_iii&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Financial instruments, class [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Section A Statement of cash flows for an entity other than a financial institution -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=sect_AStatementofcashflowsforanentityotherthanafinancialinstitution&doctype=Illustrative%20Examples -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 21 -IssueDate 2017-01-01 -Paragraph 52 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=21&date=2017-03-01&anchor=para_52_a&doctype=Standard -URIDate 2017-03-09 + Details
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