v3.26.1
Acquisitions, Dispositions And Other Adjustments (Fiber Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Business Combination [Line Items]    
Goodwill $ 63,838 $ 63,425
Lumen's Mass Markets    
Business Combination [Line Items]    
Cash payments to acquire business 5,756  
Asset Acquired, Property, Plant, and Equipment 3,400  
Goodwill 800  
Lumen's Mass Markets | Customer Relationships    
Business Combination [Line Items]    
Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill $ 900