Qualitative and quantitative information on financial risk - Summary of contractual commitments (Details) - EUR (€) € in Millions	Dec. 31, 2025	Dec. 31, 2024
Debt
Lease liabilities	€ 2,833
Due within one year
Debt
Lease liabilities	837
Due beyond five years
Debt
Lease liabilities	870
Liquidity risk [member]
Debt
Notes	22,647	€ 18,542
Borrowings from banks	1,931	3,562
Asset-backed financing	15,479	10,016
Other debt	2,808	1,990
Interest on Debt	5,786	4,313
Lease liabilities	2,833	2,852
Trade payables	29,999	29,684
Derivative (assets)/liabilities	(392)	200
Total	81,091	71,159
Liquidity risk [member] \| Due within one year
Debt
Notes	2,514	650
Borrowings from banks	1,286	3,109
Asset-backed financing	7,247	5,645
Other debt	1,782	1,596
Interest on Debt	1,610	1,188
Lease liabilities	837	866
Trade payables	29,999	29,684
Derivative (assets)/liabilities	(266)	315
Total	45,009	43,053
Liquidity risk [member] \| 1-3 years
Debt
Notes	5,901	4,777
Borrowings from banks	436	293
Asset-backed financing	4,766	2,053
Other debt	828	306
Interest on Debt	2,098	1,410
Lease liabilities	708	643
Trade payables	0	0
Derivative (assets)/liabilities	(125)	(83)
Total	14,612	9,399
Liquidity risk [member] \| 3-5 years
Debt
Notes	5,084	4,129
Borrowings from banks	135	77
Asset-backed financing	2,668	1,628
Other debt	155	15
Interest on Debt	1,152	730
Lease liabilities	418	358
Trade payables	0	0
Derivative (assets)/liabilities	(1)	(32)
Total	9,611	6,905
Liquidity risk [member] \| Due beyond five years
Debt
Notes	9,148	8,986
Borrowings from banks	74	83
Asset-backed financing	798	690
Other debt	43	73
Interest on Debt	926	985
Lease liabilities	870	985
Trade payables	0	0
Derivative (assets)/liabilities	0	0
Total	€ 11,859	€ 11,802

The amount of contractual undiscounted cash flows in relation to bank borrowings. [Refer: Borrowings]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
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The amount of contractual undiscounted cash flows in relation to bonds issued. [Refer: Bonds issued]

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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Classes of financial instruments [domain]; Financial assets; Derivatives [member]]

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

The amount of contractual undiscounted cash flows in relation to lease liabilities before deducting finance charges. [Refer: Lease liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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- Definition

The amount of interest recognised as a liability.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 112
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- Definition

The amount of contractual undiscounted cash flows in relation to trade and other payables. [Refer: Trade and other payables]

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- Definition

Asset-backed Financing, Undiscounted Cash Flow

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No definition available.

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Derivative Assets/(Liabilities), Undiscounted Cash Flow

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Other Debt, Undiscounted Cash Flow

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