v3.25.3

S-K 1603(a) SPAC Sponsor - USD ($)	Dec. 02, 2025	Oct. 24, 2025
Spac Sponsor Line Items
SPAC Sponsor Name	United Acquisition SPAC LLC
SPAC Sponsor Form of Organization	Limited Liability Company
Sponsor [Member]
Spac Sponsor Compensation Line Items
Price Paid or to be Paid for Securities, Total Amount		$ 25,000
Price Paid or to be Paid for Securities, Per Share		$ 0.009
United Acquisition SPAC LLC [Member]
Spac Sponsor Compensation Line Items
Price Paid or to be Paid for Securities, Total Amount	$ 20,000
Independent Directors [Member]
Spac Sponsor Compensation Line Items
Securities Issued or to be Issued, Shares	100,000

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-K
-Number 229
-Section 1602
-Subsection a
-Paragraph 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-K
-Number 229
-Section 1602
-Subsection b
-Paragraph 6

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-K
-Number 229
-Section 1603
-Subsection a
-Paragraph 6

+ Details

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- References

+ Details

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Namespace Prefix:	spac_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- References

+ Details

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Period Type:	duration

- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-K
-Number 229
-Section 1603
-Subsection a
-Paragraph 6

+ Details

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- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-K
-Number 229
-Section 1603
-Subsection a
-Paragraph 1

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- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-K
-Number 229
-Section 1603
-Subsection a

+ Details

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- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-K
-Number 229
-Section 1603
-Subsection a

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United Acquisition Corp. I S-1