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Private Placement (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Subsidiary, Sale of Stock [Line Items]
Exercise price of warrant	$ 11.50
Private Placement [Member]
Subsidiary, Sale of Stock [Line Items]
Number of warrants to purchase shares issued | shares	5,013,333
Price of warrants	$ 1.50
Proceeds from sale of warrants | $	$ 7.5
Number of shares per warrant | shares	1
Exercise price of warrant	$ 11.50

X

- Definition

Price per share or per unit of warrants or rights outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	ses_
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Balance Type:	na
Period Type:	instant

X

- Definition

This represents Proceeds from Sale of Units.

+ References

No definition available.

+ Details

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Namespace Prefix:	ses_
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Balance Type:	debit
Period Type:	duration

X

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644

+ Details

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X

- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

X

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Details

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