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Associates and Joint Ventures - Disclosure of Breakdown of Balances and Transactions Related to Associates and Joint Ventures Recognized VMO2 (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of joint ventures [line items] |  |  |
Receivables and other assets from associates and joint ventures | € 163 | € 139 |
Payables and other liabilities to associates and joint ventures | 407 | 203 |
Revenue from operations | 41,315 | 40,652 | € 39,993
Associates and Joint Ventures |  |  |
Disclosure of joint ventures [line items] |  |  |
Receivables and other assets from associates and joint ventures | 199 | 184 |
Payables and other liabilities to associates and joint ventures | 427 | 227 |
Revenue from operations | 771 | 696 | 460
Expenses from operations | 813 | 770 | 315
Associates and Joint Ventures | VMO2 |  |  |
Disclosure of joint ventures [line items] |  |  |
Receivables and other assets from associates and joint ventures | 59 | 66 |
Payables and other liabilities to associates and joint ventures | 27 | 34 |
Revenue from operations | 135 | 134 | 130
Expenses from operations | € 44 | € 63 | € 63

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- Definition The amount of current receivables due from joint ventures. [Refer: Total for all joint ventures [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_b&doctype=Standard -URIDate 2024-03-27 + Details
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