Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2025	Mar. 20, 2026	Jun. 30, 2025
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2025
Document Transition Report	false
Entity File Number	001-42636
Entity Registrant Name	EGH ACQUISITION CORP.
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	98-1836055
Entity Address, Address Line One	7901 4th Street North Suite No. 12820
Entity Address, City or Town	St. Petersburg
Entity Address State Or Province	FL
Entity Address, Postal Zip Code	33702
City Area Code	941
Local Phone Number	274-3811
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	true
Entity Public Float			$ 150,150,010
Auditor Firm ID	100
Auditor Name	WithumSmith+Brown, PC
Auditor Location	New York, New York
Entity Central Index Key	0002052547
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Amendment Flag	false
Units, each consisting of one Class A Ordinary Share and one Right
Title of 12(b) Security	Units, each consisting of one Class A Ordinary Share and one Right
Trading Symbol	EGHAU
Security Exchange Name	NASDAQ
Class A Ordinary Shares
Title of 12(b) Security	Class A Ordinary Shares, par value $0.0001 per share
Trading Symbol	EGHA
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		15,500,000
Rights, each Right entitling the holder to receive one-tenth (1/10) of one Class A Ordinary Share
Title of 12(b) Security	Rights, each entitling the holder to receive one-tenth (1/10) of one Class A Ordinary Share
Trading Symbol	EGHAR
Security Exchange Name	NASDAQ
Class B Ordinary Shares
Entity Common Stock, Shares Outstanding		5,000,000

EGH Acquisition Corp. 10-K