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Finance income (expense) - Analysis of finance income (expense) (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finance income (expense) related to net borrowings
Interest and other finance expense on ordinary bonds	€ (517)	€ (618)	€ (565)
Net finance income (expense) from financial assets held for trading	31	127	32
Interest and other expense due to banks and other financial institutions	(102)	(122)	(120)
Interests on lease liabilities	(347)	(378)
Interest from banks	10	21	18
Interest and other income on financial receivables and securities held for non-operating purposes	12	8	8
Finance income (expense) related to net borrowings	(913)	(962)	(627)
Exchange differences	(460)	250	341
Income (expense) from derivative financial instruments	351	(14)	(307)
Other finance income (expense)
Interest and other income on financing receivables and securities held for operating purposes	97	112	132
Capitalized finance expense	73	93	52
Finance expense due to the passage of time (accretion discount)	(190)	(255)	(249)
Other finance (expense)	(3)	(103)	(313)
Other finance income (cost)	(23)	(153)	(378)
Finance income (expense)	€ (1,045)	€ (879)	€ (971)

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The amount of finance income on financial assets held for non-operating purposes.

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The amount of finance income on financial assets held for operating purposes.

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Interest and other expense due to banks and other financial institutions

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The amount of all other miscellaneous financial income (expenses).

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The total amount of finance income expenses relating to net borrowings.

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The amount of interest and other costs that an entity incurs in connection with the borrowing of funds that are directly attributable to the acquisition, construction or production of a qualifying asset and which form part of the cost of that asset.

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The amount of expense recognised due to the unwinding of the discount on provisions, resulting from the effect of the passage of time. [Refer: Other provisions]

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

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The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]

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The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Financial instruments, class [member]]

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The gains (losses) on financial assets at fair value through profit or loss classified as held for trading. [Refer: Financial assets at fair value through profit or loss, classified as held for trading; Gains (losses) on financial assets at fair value through profit or loss]

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The amount of interest expense on bonds issued. [Refer: Interest expense; Bonds issued]

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The amount of interest expense on lease liabilities. [Refer: Lease liabilities]

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The amount of interest income on cash and cash equivalents. [Refer: Interest income; Cash and cash equivalents]

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The amount of finance income or cost that the entity does not separately disclose in the same statement or note. [Refer: Finance income (cost)]

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