v3.25.3
Cover Page - shares
9 Months Ended
Sep. 30, 2025
Oct. 24, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity File Number 001-38769  
Entity Registrant Name The Cigna Group  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 82-4991898  
Entity Address, Address Line One 900 Cottage Grove Road  
Entity Address, City or Town Bloomfield  
Entity Address, State or Province CT  
Entity Address, Postal Zip Code 06002  
City Area Code 860  
Local Phone Number 226-6000  
Title of 12(b) Security Common Stock, Par Value $0.01  
Trading Symbol CI  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   267,125,816
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2025  
Current Fiscal Year End Date --12-31  
Amendment Flag false  
Entity Central Index Key 0001739940  
Document Period End Date Sep. 30, 2025