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Sponsor Earn-Out Liability - General Information (Details) | Feb. 02, 2022 $ / shares shares
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Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Sponsor Earn-Out Shares, shares issued (in shares) | shares | 6,900,000
Sponsor Earn-Out Shares, par value (in dollars per shares) | $ / shares | $ 0.0001

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- Definition Earn-out Shares, Sponsor Earn-out Shares, Par or Stated Value Per Share + References No definition available. + Details
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Namespace Prefix: | ses_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

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- Definition Earn-out Shares, Sponsor Earn-out Shares, Shares Issued + References No definition available. + Details
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Namespace Prefix: | ses_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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