Cover - shares	3 Months Ended
	Mar. 31, 2024	May 14, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Amendment Flag	false
Document Period End Date	Mar. 31, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Entity Information [Line Items]
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 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 Contact Personnel [Line Items]
Entity Address, Address Line One	510 Madison Avenue Suite 1401
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10022
Entity Phone Fax Numbers [Line Items]
City Area Code	(212)
Local Phone Number	586-8224
Units
Entity Listings [Line Items]
Title of 12(b) Security	Units
Trading Symbol	TBMCU
Security Exchange Name	NASDAQ
Class A Common Stock
Entity Listings [Line Items]
Title of 12(b) Security	Class A Common Stock
Trading Symbol	TBMC
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		9,019,499
Rights
Entity Listings [Line Items]
Title of 12(b) Security	Rights
Trading Symbol	TBMCR
Security Exchange Name	NASDAQ
Class B Common Stock
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		1