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Revenues (Details 2) - EUR (€) € in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Revenue Explanatory [Abstract]
Gains from sale of assets and businesses		€ 3,288	€ 14	€ 459
Gains on price adjustments under overlifting/underlifting transactions		166	238	253
Lease and rental income		84	81	85
Contract penalties and other trade revenues		42	72	36
Compensation for damages		9	122	36
Other proceeds	[1]	469	404	383
Other revenue		€ 4,058	€ 931	€ 1,252
[1] Each individual amount included herein was lower than €50 million.

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The amount of revenue arising from sources that the entity does not separately disclose in the same statement or note. [Refer: Revenue]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2018-01-01
-Name IAS
-Number 18
-IssueDate 2017-01-01
-Paragraph 35
-Subparagraph b
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-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard
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