v3.26.1
Cover
3 Months Ended
Mar. 31, 2026
Cover [Abstract]  
Document Type S-4
Amendment Flag true
Amendment Description Amendment No. 1
Entity Registrant Name D. Boral ARC Acquisition I Corp. 
Entity Central Index Key 0002065779
Entity Tax Identification Number 42-3035215
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 10 East 53rd Street
Entity Address, Address Line Two Suite 3001
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10022
City Area Code 332
Local Phone Number 266-7344
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false