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Derivative financial instruments (Details 3) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Derivative Financial Instruments [Line Items]
Other operating income (expense)	€ 129	€ (32)	€ 16
Cash flow hedges [member]
Disclosure Of Derivative Financial Instruments [Line Items]
Other operating income (expense)		12	(1)
Derivatives [member]
Disclosure Of Derivative Financial Instruments [Line Items]
Other operating income (expense)	€ 129	€ (44)	€ 17

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- Definition

Disclosure of derivative financial instruments

+ References

No definition available.

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- Definition

The amount of operating income (expense) that the entity does not separately disclose in the same statement or note.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 85
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_85&doctype=Standard
-URIDate 2018-03-16

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