Note 15 - Hedging derivatives and fair value changes of the hedged items in portfolio hedge of interest rate risk - Derivatives Hedging Accounting (Details) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
HEDGING DERIVATIVES, ASSETS	€ 2,485	€ 2,833	€ 3,538
FAIR VALUE CHANGES OF THE HEDGED ITEMS IN PORTFOLIO HEDGES OF INTEREST RATE RISK, ASSETS	(25)	17	45
Liabilities Abstract
HEDGING DERIVATIVES, LIABILITIES	2,880	2,347	2,726
FAIR VALUE CHANGES OF THE HEDGED ITEMS IN PORTFOLIO HEDGES OF INTEREST RATE RISK, LIABILITIES	€ (7)	€ 0	€ 358

The amount of derivative financial assets held for hedging. [Refer: Derivative financial assets]

No definition available.

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- Definition

The amount of derivative financial assets held for hedging. [Refer: Derivative financial assets]

+ References

No definition available.

+ Details

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- Definition

The accumulated amount of fair value hedge adjustment on a hedged item that is included in the carrying amount of the hedged item, recognised in the statement of financial position as an asset. [Refer: Hedged items [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2018-01-01
-Name IFRS
-Number 7
-IssueDate 2016-01-13
-Paragraph 24B
-Subparagraph a
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2016-03-30&anchor=para_24B_a_ii&doctype=Standard
-URIDate 2016-03-31

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- Definition

+ References

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- References

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- References

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