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Impairment/reversal of tangible and intangible assets (Details 1) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
DisclosureOfImpairmentOfAssetsExplanatoryLineItems [Line Items] |  |  |
Impairment loss recognised in profit or loss | € (848) | € (1,067) | € (6,537)
Impairment loss recognized, tax effects | 144 | 283 |
Impairment loss recognized, net of tax effects | (704) | (784) |
Property Plant And Equipment [Member] | Exploration & Production [Member] |  |  |
DisclosureOfImpairmentOfAssetsExplanatoryLineItems [Line Items] |  |  |
Impairment loss recognised in profit or loss | (636) | (740) |
Impairment loss recognized, tax effects | 91 | 216 |
Impairment loss recognized, net of tax effects | (545) | (524) |
Property Plant And Equipment [Member] | Gas & Power [Member] |  |  |
DisclosureOfImpairmentOfAssetsExplanatoryLineItems [Line Items] |  |  |
Impairment loss recognised in profit or loss | (56) | 167 |
Impairment loss recognized, tax effects | 12 | 35 |
Impairment loss recognized, net of tax effects | (44) | (132) |
Property Plant And Equipment [Member] | Refining & Marketing and Chemical [Member] |  |  |
DisclosureOfImpairmentOfAssetsExplanatoryLineItems [Line Items] |  |  |
Impairment loss recognised in profit or loss | (131) | (120) |
Impairment loss recognized, tax effects | 35 | 32 |
Impairment loss recognized, net of tax effects | (96) | (88) |
Property Plant And Equipment [Member] | Corporate And Other Activities [Member] |  |  |
DisclosureOfImpairmentOfAssetsExplanatoryLineItems [Line Items] |  |  |
Impairment loss recognised in profit or loss | (25) | (40) |
Impairment loss recognized, tax effects | 6 |  |
Impairment loss recognized, net of tax effects | € (19) | € (40) |

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- Definition The amount of impairment loss recognised in profit or loss. [Refer: Impairment loss; Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2017-01-01 -Paragraph 126 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2017-03-01&anchor=para_126_a&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2017-01-01 -Paragraph 129 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2017-03-01&anchor=para_129_a&doctype=Standard -URIDate 2017-03-09 + Details
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