Note 48 - Impairment or reversal of impairment on non-financial assets (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Impairment or reversal of impairment on non-financial assets
Tangible assets, impairment or reversal of impairment	€ (42)	€ (143)	€ (60)
Intangible assets, impairment or reversal of impairment	(16)	(3)	(4)
Other non-financial assets, impairment or reversal of impairment	(306)	(375)	(209)
Total impairment (reversal of impairment) of non-financial assets	€ 363	€ 521	€ 273

The amount of impairment loss or reversal of impairment loss recognised in profit or loss. [Refer: Impairment loss recognised in profit or loss; Reversal of impairment loss recognised in profit or loss]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2016-01-13
-Paragraph 99
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_99&doctype=Standard
-URIDate 2016-03-31

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration