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Note 8 - Fair Value Instruments Carried At Cost - Sales (Details) - Not Measured At Fair Value In Statement Of Financial Position But For Which Fair Value Is Disclosed [Member] - Financial Assets Available for sale Category [Member] - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Fair Value Measurement Of Assets Sales Line Items |  |  |
Sales Fair Value Measurement Assets | € 21 | € 201 | € 33
Carrying value assets at sale date | 15 | 58 | 22
Changes in FV recognized in P&L Assets | € 6 | € 142 | € 11

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- Definition The amount recognised as of the acquisition date of the assets acquired in a business combination. + References No definition available. + Details
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- References No definition available. + Details
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- Definition The gains (losses) recognised in profit or loss on the fair value measurement of assets. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2016-01-13 -Paragraph 93 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=13&date=2016-03-30&anchor=para_93_e_i&doctype=Standard -URIDate 2016-03-31 + Details
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- Definition The decrease in the fair value measurement of assets resulting from sales. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2016-01-13 -Paragraph 93 -Subparagraph e -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=13&date=2016-03-30&anchor=para_93_e_iii&doctype=Standard -URIDate 2016-03-31 + Details
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