Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2023	May 12, 2023
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2023
Entity File Number	001-41668
Entity Registrant Name	TRAILBLAZER MERGER CORPORATION I
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	87-3710376
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
City Area Code	212
Local Phone Number	586-8224
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
Entity Shell Company	true
Entity Central Index Key	0001934945
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Amendment Flag	false
Units
Document and Entity Information
Title of 12(b) Security	Units
Trading Symbol	TBMCU
Security Exchange Name	NASDAQ
Common Stock
Document and Entity Information
Title of 12(b) Security	Class A Common Stock
Trading Symbol	TBMC
Security Exchange Name	NASDAQ
Rights
Document and Entity Information
Title of 12(b) Security	Rights
Trading Symbol	TBMCR
Security Exchange Name	NASDAQ
Class A common stock
Document and Entity Information
Entity Common Stock, Shares Outstanding		9,019,499
Class B Common Stock
Document and Entity Information
Entity Common Stock, Shares Outstanding		1