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Commitments and Contingent Liabilities - Summary of Long-term Finance Lease Commitments (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Finance Lease by Lessee [Line Items]
Future minimum lease payments	€ 187	€ 206
Finance Cost	59	75
Present value	128	131
Within 1 year [Member]
Disclosure of Finance Lease by Lessee [Line Items]
Future minimum lease payments	20	20
Finance Cost	7	9
Present value	13	11
Later than 1 year but not later than 5 years [Member]
Disclosure of Finance Lease by Lessee [Line Items]
Future minimum lease payments	71	68
Finance Cost	20	23
Present value	51	45
Later than 5 years [Member]
Disclosure of Finance Lease by Lessee [Line Items]
Future minimum lease payments	96	118
Finance Cost	32	43
Present value	64	75
Buildings [member]
Disclosure of Finance Lease by Lessee [Line Items]
Future minimum lease payments	174	195
Finance Cost	57	75
Present value	117	120
Plant and machinery [Member]
Disclosure of Finance Lease by Lessee [Line Items]
Future minimum lease payments	13	11
Finance Cost	2
Present value	€ 11	€ 11

X

- Definition

The amount representing the difference between the future minimum finance lease payments and their present value. Minimum lease payments are payments over the 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: (a) for a lessee, any amounts guaranteed by the lessee or by a party related to the lessee; or (b) for a lessor, any residual value guaranteed to the lessor by: (i) the lessee; (ii) a party related to the lessee; or (iii) a third party unrelated to the lessor that is financially capable of discharging the obligations under the guarantee.

+ 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
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-URIDate 2017-03-09

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X

- 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

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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

- Definition

Disclosure of finance leases by lessee.

+ References

No definition available.

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