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Cash and Cash Equivalents - Additional Information (Detail) - EUR (€) € in Millions	Jun. 30, 2018	Dec. 31, 2017
Disclosure of cash and cash equivalents [line Items]
Cash in bank and on hand	€ 166	€ 269
Subsidiaries in capital control restrictions countries [member]
Disclosure of cash and cash equivalents [line Items]
Cash in bank and on hand	€ 15	€ 12

X

- Definition

Disclosure of cash and cash equivalents.

+ References

No definition available.

+ Details

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X

- Definition

The amount of cash on hand and demand deposits. [Refer: Cash on hand]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2017-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_45&doctype=Standard
-URIDate 2017-03-09

+ Details

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Balance Type:	debit
Period Type:	instant

X

- Details

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