Note 18 - Tax assets and liabilities - Deferred Taxes (Details) - EUR (€) € in Millions	Jun. 30, 2018	Dec. 31, 2017
Deferred Tax Assets And Liabilities Abstract
Current tax assets	€ 2,195	€ 2,163
Deferred tax assets	15,221	14,725
TAX ASSETS	17,416	16,888
Current tax liabilities	1,428	1,114
Deferred tax liabilities	2,186	2,184
TAX LIABILITIES	€ 3,614	€ 3,298

The amount of assets recognized in the balance that is the sume of Deferred tax assets and current tax assets.

No definition available.

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- Definition

The amount of liabilities recognized in the balance that is the sume of Deferred tax liabilities and current tax liabilities.

+ References

No definition available.

+ Details

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- Definition

The excess of amount paid for current tax in respect of current and prior periods over the amount due for those periods. Current tax is the amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period.

+ References

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- Definition

The amount of current tax for current and prior periods to the extent unpaid. Current tax is the amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period.

+ References

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- Definition

The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References

No definition available.

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- Definition

The amounts of income taxes payable in future periods in respect of taxable temporary differences. [Refer: Temporary differences [member]]

+ References

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