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Private Placement - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Sep. 21, 2020	Mar. 31, 2021
Private Placement [Line Items]
Warrants price per unit		$ 11.50
Private Placement
Private Placement [Line Items]
Warrants issued	4,666,667
Warrants price per unit	$ 1.50
Period to issue warrant after completion of initial business combination		30 days
Private Placement | Class A Ordinary Share
Private Placement [Line Items]
Warrants price per unit		$ 11.50
Private Placement | Sponsor
Private Placement [Line Items]
Warrants issued	4,666,667
Warrants price	$ 1.50
Gross proceeds from private placement	$ 7.0

X

- Definition

Class of warrant or right Issued.

+ References

No definition available.

+ Details

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Namespace Prefix:	stwou_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Class of warrants or rights issue price.

+ References

No definition available.

+ Details

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

X

- Definition

Period to issue warrant after completion of initial business combination.

+ References

No definition available.

+ Details

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Namespace Prefix:	stwou_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Private placement.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
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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=109259400&loc=d3e21475-112644

+ Details

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Period Type:	instant

X

- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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X

- Details

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