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Property Plant and Equipment - Summary of Future Aggregate Minimum Lease Payments Under Non-cancellable Finance Leases (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of finance lease by lessee [line Items]
Future aggregate minimum lease payments under non-cancellable finance leases	€ 71	€ 71
Present value of future aggregate minimum lease payments under non-cancellable finance leases	60	60
Less than 1 year [member]
Disclosure of finance lease by lessee [line Items]
Future aggregate minimum lease payments under non-cancellable finance leases	15	13
Present value of future aggregate minimum lease payments under non-cancellable finance leases	14	10
Between 1 and 5 years [member]
Disclosure of finance lease by lessee [line Items]
Future aggregate minimum lease payments under non-cancellable finance leases	37	36
Present value of future aggregate minimum lease payments under non-cancellable finance leases	30	35
More than 5 years [member]
Disclosure of finance lease by lessee [line Items]
Future aggregate minimum lease payments under non-cancellable finance leases	19	22
Present value of future aggregate minimum lease payments under non-cancellable finance leases	€ 16	€ 15

X

- Definition

Disclosure of finance leases by lessee.

+ References

No definition available.

+ Details

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- Definition

The amount of payments over the finance lease term that the lessee is or can be required to make, excluding contingent rent, costs for services and taxes to be paid by, and reimbursed to, the lessor, together with any amounts guaranteed by the lessee or by a party related to the lessee.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2019-01-01
-Name IAS
-Number 17
-IssueDate 2017-01-01
-Paragraph 31
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2017-03-02&anchor=para_31_b&doctype=Standard&book=B
-URIDate 2017-03-09

+ Details

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X

- Definition

The present value of minimum finance lease payments payable. [Refer: Minimum finance lease payments payable]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2019-01-01
-Name IAS
-Number 17
-IssueDate 2017-01-01
-Paragraph 31
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2017-03-02&anchor=para_31_b&doctype=Standard&book=B
-URIDate 2017-03-09

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X

- Details

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