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Note 4 - Deconsolidation Due to Loss of Control (Details Textual) € in Millions |  | 1 Months Ended
--- | --- | ---
May 19, 2023 EUR (€) | Feb. 28, 2023
Restructuring and Related Cost, Number of Positions Eliminated |  | 250
Net Deconsolidation Gain and Reversal of Parental Guarantee Provision | € 62.6 |

X
- Definition Amount of net deconsolidation gain and reversal of parental guarantee provision. + References No definition available. + Details
Name: | sev_NetDeconsolidationGainAndReversalOfParentalGuaranteeProvision
Namespace Prefix: | sev_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of positions eliminated during the period as a result of restructuring activities. + References No definition available. + Details
Name: | us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration