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v3.25.4

Related-Party Transactions (Details) | Oct. 28, 2024
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Related Party Transactions [Abstract] |
Former related party, fully diluted voting interest (as a percent) | 5.00%

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- Definition Former Related Party, Fully Diluted Voting Interest Percentage + References No definition available. + Details
Name: | ses_FormerRelatedPartyFullyDilutedVotingInterestPercentage
Namespace Prefix: | ses_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration