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Finance income (expense) (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Finance Income Expense Explanatory [Abstract]
Finance income	€ 3,967	€ 3,924	€ 5,850
Finance expense	(4,663)	(5,886)	(6,232)
Net finance income (expense) from financial assets held for trading	32	(111)	(21)
Income (expense) from derivative financial instruments	(307)	837	(482)
Finance income (cost)	€ (971)	€ (1,236)	€ (885)

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- Definition

DisclosureOfFinanceIncomeExpenseExplanatoryAbstract

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No definition available.

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The amount of income or cost from derivatives financial instruments.

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- Definition

Adjustments for decrease (increase) in financial assets held for trading to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Financial assets; Financial assets at fair value through profit or loss, classified as held for trading; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of costs associated with financing activities of the entity.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The amount of income associated with interest and other financing activities of the entity.

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The amount of income or cost associated with interest and other financing activities of the entity.

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