Acquisitions - Schedule of total purchase consideration (Details) - Infinera Corporation € in Millions	Feb. 28, 2025 EUR (€)
Disclosure of detailed information about business combination [line items]
Cash	€ 1,066
Infinera's convertible notes	785
Nokia shares issued	584
Portion of the replacement equity awards attributable to pre-combination service	61
Total purchase consideration	€ 2,496

The acquisition-date fair value of equity interest in the acquiree held by the acquirer immediately before the acquisition date in a business combination achieved in stages. [Refer: Total for all business combinations [member]]

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The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Total for all business combinations [member]]

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The fair value, at acquisition date, of cash transferred as consideration in a business combination. [Refer: Total for all business combinations [member]]

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The fair value, at acquisition date, of liabilities incurred (for example, a liability for contingent consideration) as consideration transferred in a business combination. [Refer: Total for all business combinations [member]]

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