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Note 25 - Post-employment and other employee benefit commitments - Equity Impact (Details) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Post-employment and other employee benefit commitments Lien Items |  |  |
Remeasurement, charges to equity | € 140 | € 356 | € 135
Defined benefit plans - Impact On Equity [Member] |  |  |
Post-employment and other employee benefit commitments Lien Items |  |  |
Remeasurement, charges to equity | (40) | 237 | 128
Post employent medical beneficts [Member] |  |  |
Post-employment and other employee benefit commitments Lien Items |  |  |
Remeasurement, charges to equity | € 179 | € 119 | € 7

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- Definition The increase (decrease) in reimbursement rights resulting from the remeasurement of reimbursement rights. [Refer: Reimbursement rights, at fair value] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2016-01-13 -Paragraph 141 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2016-03-30&anchor=para_141_c&doctype=Standard -URIDate 2016-03-31 + Details
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