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Receivables and Other Current Assets - Summary (Details) - EUR (€) € in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of financial assets [line items]
Receivables (Note 16)	€ 7,564	€ 7,430
Trade receivables	10,074	9,938
Receivables from associates and joint ventures (Note 10)	163	139
Other receivables	375	345
Other current assets	2,881	2,702
Contractual assets (Note 23)	229	202
Capitalized costs (Note 23)	1,094	998
Prepayments	1,358	1,344
Short-term insurance and reinsurance contracts assets	164	113
Short-term insurance and reinsurance contracts assets from associates and joint ventures (Note 10)	36	45
Total	10,445	10,132
Impairment losses | Trade receivables
Disclosure of financial assets [line items]
Impairment of trade receivables	€ (3,048)	€ (2,992)	€ (2,891)

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The amount of current contract assets. [Refer: Contract assets]

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) 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 receive 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 the entity’s own equity instruments do not include puttable financial instruments 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. [Refer: Classes of financial instruments [domain]; Financial liabilities]

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