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Subsequent Events - Additional Information (Details) - $ / shares	Apr. 15, 2021	Mar. 31, 2021	Mar. 04, 2021	Dec. 31, 2020
Subsequent Event
Subsequent Event [Line Items]
Description of unit	Each Unit consists of one Class A Ordinary Share and one-fourth of one redeemable warrant to purchase one Class A Ordinary Share.
Class A Ordinary Shares
Subsequent Event [Line Items]
Ordinary shares, par value		$ 0.0001	$ 0.0001	$ 0.0001
Warrant exercisable number of shares		1
Class A Ordinary Shares | Subsequent Event
Subsequent Event [Line Items]
Ordinary shares, par value	$ 0.0001
Warrant exercisable number of shares	1

X

- Definition

Description of unit

+ References

No definition available.

+ Details

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Namespace Prefix:	snii_
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Balance Type:	na
Period Type:	duration

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

Face amount or stated value per share of common stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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