Inventories - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Inventories [Line Items]
Cost of inventories recognised as expense during period	€ 150	€ 69
Inventory provision	6	€ 7
Intelsat Acquisition [Member]
Inventories [Line Items]
Work in progress	€ 164

The amount recognised as of the acquisition date for inventory acquired in a business combination. [Refer: Inventories; Total for all business combinations [member]]

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