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Treasury Risk Management - Summary of Financial Assets are Subject to Offsetting, Enforceable Master Netting Arrangements and Similar Agreements (Detail) - Derivative Financial Assets [Member] - EUR (€) € in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of offsetting of financial assets [line items] |  |
Gross amounts of recognised financial assets | € 339 | € 276
Gross amounts of recognised financial assets set off in the balance sheet | (63) | (103)
Net amounts of financial assets presented in the balance sheet | 276 | 173
Financial instruments | (164) | (108)
Cash collateral received | (10) | (6)
Net amount | € 102 | € 59

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- Definition The amount of financial instruments subject to an enforceable master netting arrangement or similar agreement that are not set off against financial assets. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph IG40D -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_IG40D&doctype=Implementation%20Guidance -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 13C -Subparagraph d -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_13C_d_i&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of financial liabilities set off against financial assets when an entity: (a) currently has a legally enforceable right to set off the recognised amounts; and (b) intends either to settle on a net basis or to realise the asset and settle the liability simultaneously. [Refer: Financial assets; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 13C -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_13C_b&doctype=Standard -URIDate 2017-03-09 + Details
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