v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Sep. 02, 2026
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --12-31  
Entity Registrant Name B&R TECHNOLOGY MERGER CORP.  
Entity Central Index Key 0002131350  
Entity File Number 001-43408  
Entity Tax Identification Number 98-1902448  
Entity Incorporation, State or Country Code E9  
Entity Address, Address Line One 2300 West Sahara Avenue  
Entity Address, City or Town Las Vegas  
Entity Address, State or Province NV  
Entity Address, Postal Zip Code 89102  
City Area Code 702  
Local Phone Number 483-8180  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Shell Company true  
Entity Ex Transition Period false  
Units, each consisting of one Class A Ordinary Share and onethird of one redeemable Warrant [Member]    
Document Information [Line Items]    
Title of 12(b) Security Units, each consisting of one Class A Ordinary Share and one-third of one redeemable Warrant  
Trading Symbol BRTMU  
Security Exchange Name NASDAQ  
Class A Ordinary Shares, par value $0.0001 per share    
Document Information [Line Items]    
Title of 12(b) Security Class A Ordinary Shares, par value $0.0001 per share  
Trading Symbol BRTM  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding   36,740,000
Warrants, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of 11.50 per share [Member]    
Document Information [Line Items]    
Title of 12(b) Security Warrants, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50 per share  
Trading Symbol BRTMW  
Security Exchange Name NASDAQ  
Common Class B [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   12,000,000