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Financial Risk Management - Summary of Exposure to Financial Counterparties by Rating Type (Detail) € in Millions | Dec. 31, 2017 EUR (€) Counterparty | Dec. 31, 2016 EUR (€) Counterparty
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Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Number of financial counterparties | Counterparty | 18 | 15
Exposure | € | € 295 | € 398
Rated Aa or better [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Number of financial counterparties | Counterparty | 3 | 3
Exposure | € | € 52 | € 13
Rated A [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Number of financial counterparties | Counterparty | 12 | 9
Exposure | € | € 224 | € 369
Rated Baa [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Number of financial counterparties | Counterparty | 3 | 3
Exposure | € | € 19 | € 16

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- Definition Number of financial counterparties. + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 35K -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_35K_a&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 36 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_36_a&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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- Details
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- Details
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- Details
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