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Business Combinations - Joint Operation in Colombia (Details) - Colombia Telecomunicaciones S.A. ESP BIC And Colombia Móvil S.A. ESP € in Millions	Dec. 20, 2024 EUR (€)
Disclosure of detailed information about business combination [line items]
Intangible assets	€ 11
Property, plant and equipment	88
Rights of use	22
Trade receivables	43
Total assets	164
Lease liabilities	2
Trade payables	77
Provisions	1
Total liabilities	€ 80

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The amount recognised as of the acquisition date for identifiable intangible assets acquired in a business combination. [Refer: Intangible assets other than goodwill; Total for all business combinations [member]]

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The amount recognised as of the acquisition date for plant, property and equipment acquired in a business combination. [Refer: Property, plant and equipment; Total for all business combinations [member]]

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The amount recognised as of the acquisition date for trade and other payables assumed in a business combination. [Refer: Trade and other payables; Total for all business combinations [member]]

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