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Commitments and Contingent Liabilities - Summary of Operating Lease and Other Commitments (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Operating Lease And Other Commitments [Line Items]
Operating leases	€ 2,454	€ 2,841
Other commitments	2,240	2,465
Within 1 year [Member]
Disclosure Of Operating Lease And Other Commitments [Line Items]
Operating leases	418	457
Other commitments	1,274	1,204
Later than 1 year but not later than 5 years [Member]
Disclosure Of Operating Lease And Other Commitments [Line Items]
Operating leases	1,250	1,393
Other commitments	935	1,231
Later than 5 years [Member]
Disclosure Of Operating Lease And Other Commitments [Line Items]
Operating leases	786	991
Other commitments	€ 31	€ 30

X

- Definition

Minimum lease payments related to arrangements that include payments for non-lease elements. 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 IFRIC
-Number 4
-IssueDate 2016-01-13
-Paragraph 15
-Subparagraph b
-Clause i
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-URIDate 2016-03-31

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- Definition

The amount of future minimum lease payments payable under non-cancellable operating leases. 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 2016-01-13
-Paragraph 35
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2016-03-30&anchor=para_35_a&doctype=Standard
-URIDate 2016-03-31

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X

- Definition

The disclosure of operating lease and other commitments.

+ References

No definition available.

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