Commitments, contingencies and legal proceedings - Narrative (Details) € in Millions	Dec. 31, 2025 EUR (€) case	Dec. 31, 2024 EUR (€)
Commitments, contingencies and legal proceedings
Lease extension options reasonably certain not to be exercised	€ 906	€ 812
Lease termination options expected to be exercised	€ 97	€ 58
Number of asbestos related litigation matters \| case	250

Lease exposure arising from extension options, not expected to be exercised

No definition available.

Name:	nok_LeaseExposureArisingFromExtensionOptionsNotExpectedToBeExercised
Namespace Prefix:	nok_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant