Cover - USD ($)	12 Months Ended
	Dec. 31, 2025	Mar. 06, 2026	Jun. 30, 2025
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Financial Statement Error Correction [Flag]	false
Entity Interactive Data Current	Yes
ICFR Auditor Attestation Flag	false
Amendment Flag	false
Document Period End Date	Dec. 31, 2025
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Documents Incorporated by Reference [Text Block]	None
Entity Registrant Name	TRAILBLAZER MERGER CORPORATION I
Entity Central Index Key	0001934945
Entity File Number	001-41668
Entity Tax Identification Number	87-3710376
Entity Incorporation, State or Country Code	DE
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Shell Company	true
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Public Float			$ 3,897,275
Entity Address, Address Line One	510 Madison Avenue
Entity Address, Address Line Two	Suite 1401
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10022
City Area Code	(212)
Local Phone Number	586-8224
Class A Common Stock
Document Information [Line Items]
Title of 12(b) Security	Class A Common Stock
Trading Symbol	TBMC
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		2,452,315
Rights
Document Information [Line Items]
Title of 12(b) Security	Rights
Trading Symbol	TBMCR
Security Exchange Name	NASDAQ
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		1