Financial Assets and Liabilities - Long-term Credits (Details) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Financial Instruments [Abstract]
Long-term trade receivables	€ 638	€ 593
Long-term receivables for indirect taxes	189	144
Other long-term credits	995	1,033
Total	€ 1,822	€ 1,770

The amount of non-current value added tax receivables. [Refer: Value added tax receivables]

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

Name:	ifrs-full_NoncurrentValueAddedTaxReceivables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant