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RELATED PARTY TRANSACTIONS - Additional Information (Details) - USD ($)							9 Months Ended	12 Months Ended
	Oct. 23, 2024	Oct. 02, 2024	Jul. 22, 2024	Mar. 28, 2024	Mar. 14, 2024	Aug. 08, 2023	Dec. 04, 2024	Dec. 31, 2025	Dec. 31, 2024	Jul. 21, 2025	Jul. 11, 2025	Oct. 31, 2024	Mar. 13, 2024	Jan. 19, 2023
RELATED PARTY TRANSACTIONS
Accrued expenses								$ 1,169,888	$ 1,391,149
Amount outstanding								$ 500,000	$ 500,000
Other Liability, Noncurrent, Related Party, Type [Extensible Enumeration]								Related Party	Related Party
Proceeds from working capital loan - related party									$ 900,000
Outstanding note								$ 1,822,000	1,400,000
Payment for expenses by sponsor								422,000	1,485,000
Advance from related party								$ 1,485,000	1,485,000
Common Class A
RELATED PARTY TRANSACTIONS
Ordinary shares, par value (in dollars per share)								$ 0.0001
Mustang Sponsor LLC
RELATED PARTY TRANSACTIONS
Trust assets available for working capital loan repayment								$ 0
Sponsor
RELATED PARTY TRANSACTIONS
Payment for expenses by sponsor		$ 1,485,000
Administrative Services Agreement \| Affiliate of the Sponsor
RELATED PARTY TRANSACTIONS
Expenses per month								10,000
Expenses incurred								120,000	120,000
Accrued expenses								$ 340,000	220,000
Related Party Loans \| Sponsor \| Working Capital Loans
RELATED PARTY TRANSACTIONS
Price of warrant (in dollars per share)								$ 2
Related Party Loans \| Sponsor \| Mustang Sponsor LLC
RELATED PARTY TRANSACTIONS
Maximum borrowing capacity of related party promissory note														$ 500,000
Borrowings available								$ 0	0
Related Party Loans \| Sponsor \| Mustang Sponsor LLC \| Working Capital Loans
RELATED PARTY TRANSACTIONS
Loan conversion agreement warrant								$ 1,500,000
Price of warrant (in dollars per share)								$ 2
Ordinary shares, par value (in dollars per share)								$ 0.0001
Amount outstanding								$ 500,000	$ 500,000
Other Liability, Noncurrent, Related Party, Type [Extensible Enumeration]								us-gaap:NonrelatedPartyMember	us-gaap:NonrelatedPartyMember
Related Party Loans \| Sponsor \| Mustang Sponsor LLC \| Working Capital Loans \| Common Class A
RELATED PARTY TRANSACTIONS
Price of warrant (in dollars per share)								$ 2
August 2023 promissory note with related party \| Sponsor
RELATED PARTY TRANSACTIONS
Maximum borrowing capacity of related party promissory note						$ 500,000
Proceeds from working capital loan - related party						$ 500,000
Borrowings available								$ 0	$ 0
March 2024 note \| Sponsor
RELATED PARTY TRANSACTIONS
Maximum borrowing capacity of related party promissory note													$ 500,000
Proceeds from working capital loan - related party			$ 140,000	$ 235,000	$ 125,000
Borrowings available								0	0
Outstanding note								500,000	500,000
October 2024 Promissory Note \| Starwood Capital Group Management LLC
RELATED PARTY TRANSACTIONS
Outstanding note								400,000	400,000
Principal amount of note												$ 400,000
2024 Note and the October 2024 Promissory Note
RELATED PARTY TRANSACTIONS
Aggregate amount of deposit into the trust account for its public stockholders	$ 50,000	$ 50,000					$ 225,000
July 11th Note \| Sponsor
RELATED PARTY TRANSACTIONS
Outstanding note								150,000	0
Principal amount of note											$ 150,000
July 21st Note \| Madison Grose
RELATED PARTY TRANSACTIONS
Outstanding note								$ 272,000	$ 0
Principal amount of note										$ 272,000