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Financial Instruments Fair Value Risk - Summary of Assets and Liabilities Carried at Fair Value, Classification of Fair Value Calculations by Category (Parenthetical) (Detail) - Fair value [Member] - EUR (€) € in Millions | Dec. 31, 2017 | Dec. 31, 2016
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Disclosure of Detailed Information about Financial Instruments [Line Items] |  |
Derivatives assets, reported within trade receivables | € 57 | € 135
Derivatives liabilities, reported within trade receivables | € (113) | € (146)

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- Definition Derivatives financial assets reported within trade receivables hedge trading activities. + References No definition available. + Details
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- Definition Derivatives financial liabilities reported within trade receivables hedge trading activities. + References No definition available. + Details
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- Details
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