Note 43 - Insurance and reinsurance contracts income and expenses - Other operating income and expenses on insurance and reinsurance contracts (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Insurance and Reinsurance Contracts Income and Expenses
Income on insurance and reinsurance contracts (Income Statement)	€ 3,342	€ 3,652	€ 3,678
Expenses on insurance and reinsurance contracts (Income Statement)	2,272	2,545	2,599
Total Net Income Arising from Insurance and Reinsurance Contracts	€ 1,069	€ 1,107	€ 1,080

No definition available.

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- Definition

The net income or expenses associated to insurance contracts.

+ References

No definition available.

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- Definition

The amount of expense arising from insurance contracts. [Refer: Insurance contracts [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 4
-IssueDate 2016-01-13
-Paragraph 37
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=4&date=2016-03-30&anchor=para_37_b&doctype=Standard
-URIDate 2016-03-31

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- Definition

The amount of income arising from insurance contracts. [Refer: Insurance contracts [member]]

+ References

+ Details

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