v3.26.1
Cover
Mar. 31, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Mar. 31, 2026
Entity File Number 001-42506
Entity Registrant Name Callan JMB Inc.
Entity Central Index Key 0002032545
Entity Tax Identification Number 99-0931141
Entity Incorporation, State or Country Code NV
Entity Address, Address Line One 244 Flightline Drive
Entity Address, City or Town Spring Branch
Entity Address, State or Province TX
Entity Address, Postal Zip Code 78070
City Area Code (830)
Local Phone Number 438-0395
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.001 par value
Trading Symbol CJMB
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false