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Private Placement - Addtional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024	Jan. 18, 2022
Class of Warrant or Right [Line Items]
Proceeds from issuance of warrants	$ 7,942,500
Purchase of ordinary share		1	1
Purchase of ordinary share, per share		$ 11.5	$ 11.5
Private Placement Warrants [Member] | Sponsor [Member]
Class of Warrant or Right [Line Items]
Class of warrant or right issued during period warrants	7,942,500
Sale of stock, price per share	$ 1	$ 1

X

- Definition

Class of warrant or right issued during period warrants.

+ References

No definition available.

+ Details

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Namespace Prefix:	fuse_
Data Type:	xbrli:sharesItemType
Balance Type:	na
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
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

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Balance Type:	na
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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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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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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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
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

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Balance Type:	debit
Period Type:	duration

X

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

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X

- Details

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Namespace Prefix:
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X

- Details

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