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Shareholders’ equity (Details 1) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Shareholders Equity Details 1
Share capital	€ 4,005	€ 4,005
Legal reserve	959	959
Reserve for treasury shares	581	581
Reserve related to the fair value of cash flow hedging derivatives net of the tax effect	183	189
Reserve related to the fair value of available-for-sale securities net of the tax effect		4
Reserve related to the defined benefit plans net of tax effect	(114)	(112)
Other reserves	280	211
Cumulative currency translation differences	4,818	10,319
Treasury shares	581	581
Retained earnings	35,966	40,367
Interim dividend	(1,441)	(1,441)
Net profit (loss) for the year	3,374	(1,464)
Equity attributable to owners of parent	€ 48,030	€ 53,037

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- Definition

Represents the distribution to shareholders that has been both declared and paid before a company has determined its full-year earnings.

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The amount of miscellaneous other reserves.

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- Definition

Represents the reserve of gains and losses on re-measuring available for sale financial assets net of the tax effects.

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- Definition

A component of equity representing the reserve for the redemption of the entity's own shares.

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The amount of equity attributable to the owners of the parent. This specifically excludes non-controlling interest.

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The profit (loss) attributable to owners of the parent. [Refer: Profit (loss)]

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A component of equity representing exchange differences on translation of financial statements of foreign operations recognised in other comprehensive income and accumulated in equity. [Refer: Other comprehensive income]

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An entity’s own equity instruments, held by the entity or other members of the consolidated group.

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