v3.26.1
Document And Entity Information
Jun. 05, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jun. 05, 2026
Entity Registrant Name Cardinal Infrastructure Group Inc.
Entity Central Index Key 0002079999
Entity Emerging Growth Company true
Entity File Number 001-43004
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 39-3180206
Entity Address, Address Line One 100 E. Six Forks Road, #300
Entity Address, City or Town Raleigh
Entity Address, State or Province NC
Entity Address, Postal Zip Code 27609
City Area Code 919
Local Phone Number 324-1964
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Ex Transition Period true
Title of 12(b) Security Class A Common Stock, $0.0001 Par Value
Trading Symbol CDNL
Security Exchange Name NASDAQ