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Property, plant and equipment (Details 1) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
DisclosureOfPropertyPlantAndEquipmentExplanatoryLineItems [Line Items]
Additions other than through business combinations, property, plant and equipment	€ 8,490	€ 9,067
Exploration & Production Segment [Member]
DisclosureOfPropertyPlantAndEquipmentExplanatoryLineItems [Line Items]
Additions other than through business combinations, property, plant and equipment	7,638	8,217
Gas & Power Segment [Member]
DisclosureOfPropertyPlantAndEquipmentExplanatoryLineItems [Line Items]
Additions other than through business combinations, property, plant and equipment	87	66
Refining & Marketing and Chemical segment [Member]
DisclosureOfPropertyPlantAndEquipmentExplanatoryLineItems [Line Items]
Additions other than through business combinations, property, plant and equipment	712	655
Corporate And Other Activities [Member]
DisclosureOfPropertyPlantAndEquipmentExplanatoryLineItems [Line Items]
Additions other than through business combinations, property, plant and equipment	69	42
Elimination of intragroup profits [Member]
DisclosureOfPropertyPlantAndEquipmentExplanatoryLineItems [Line Items]
Additions other than through business combinations, property, plant and equipment	€ (16)	€ 87

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- References

No definition available.

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- Definition

The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2017-01-01
-Paragraph 73
-Subparagraph e
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e_i&doctype=Standard
-URIDate 2017-03-09

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