Finance income (expense) - Analysis of finance income (expense) (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Finance income (expense) related to net borrowings
Interest and other finance expense on ordinary bonds	€ (774)	€ (827)	€ (667)
Net finance income (expense) on financial assets held for trading	243	367	250
Net expenses on other financial assets valued at fair value with effects on profit and loss	(8)	21	34
Interest and other expense due to banks and other financial institutions	(252)	(358)	(207)
Interests on lease liabilities	(348)	(314)	(267)
Interest from banks	191	294	356
Interest and other income on financial receivables and securities held for non-operating purposes	205	161	14
Finance income (expense) related to net borrowings	(743)	(656)	(487)
Exchange differences	133	(38)	255
Income (expense) from derivative financial instruments	(80)	278	(61)
Other finance income (expense)
Interest and other income on financing receivables and securities held for operating purposes	39	44	153
Capitalized finance expense	122	222	94
Finance expense due to the passage of time (accretion discount)	(250)	(261)	(341)
Other finance income (expense)	(40)	(188)	(86)
Other finance income (cost)	(129)	(183)	(180)
Finance income (expense)	€ (819)	€ (599)	€ (473)

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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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The amount of gains (losses) on financial assets at fair value through profit or loss classified as held for trading.

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The gains (losses) on other financial assets at fair value through profit or loss.

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The amount of 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 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]; Classes of financial instruments [domain]]

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